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Merge 69f637c335 ("Merge tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block") into android-mainline

Browse Source 
Steps on the way to 5.11-rc1

Resolves conflicts in:
	arch/arm64/include/asm/thread_info.h
	fs/proc/base.c

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ibc53e7c14fc0953a95f89af81b0e0373ddad986a
This commit is contained in:
Greg Kroah-Hartman 2020-12-18 16:51:45 +01:00
commit a14ed4197e
468 changed files with 8049 additions and 7049 deletions
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2
.mailmap
View File

@ -122,6 +122,8 @@ Henk Vergonet <Henk.Vergonet@gmail.com>
Henrik Kretzschmar <henne@nachtwindheim.de>
Henrik Rydberg <rydberg@bitmath.org>
Herbert Xu <herbert@gondor.apana.org.au>
Huacai Chen <chenhuacai@kernel.org> <chenhc@lemote.com>
Huacai Chen <chenhuacai@kernel.org> <chenhuacai@loongson.cn>
Jacob Shin <Jacob.Shin@amd.com>
Jaegeuk Kim <jaegeuk@kernel.org> <jaegeuk@google.com>
Jaegeuk Kim <jaegeuk@kernel.org> <jaegeuk.kim@samsung.com>

8
Documentation/ABI/testing/sysfs-class-rnbd-client
View File

@ -66,7 +66,7 @@ Description: Expected format is the following::
The rnbd_server prepends the <device_path> received from client
with <dev_search_path> and tries to open the
<dev_search_path>/<device_path> block device. On success,
a /dev/rnbd<N> device file, a /sys/block/rnbd_client/rnbd<N>/
a /dev/rnbd<N> device file, a /sys/block/rnbd<N>/
directory and an entry in /sys/class/rnbd-client/ctl/devices
will be created.
@ -95,12 +95,12 @@ Description: Expected format is the following::
---------------------------------
After mapping, the device file can be found by:
o The symlink /sys/class/rnbd-client/ctl/devices/<device_id>
o The symlink /sys/class/rnbd-client/ctl/devices/<device_id>@<session_name>
points to /sys/block/<dev-name>. The last part of the symlink destination
is the same as the device name. By extracting the last part of the
path the path to the device /dev/<dev-name> can be build.
* /dev/block/$(cat /sys/class/rnbd-client/ctl/devices/<device_id>/dev)
* /dev/block/$(cat /sys/class/rnbd-client/ctl/devices/<device_id>@<session_name>/dev)
How to find the <device_id> of the device is described on the next
section.
@ -110,7 +110,7 @@ Date: Feb 2020
KernelVersion: 5.7
Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
Description: For each device mapped on the client a new symbolic link is created as
/sys/class/rnbd-client/ctl/devices/<device_id>, which points
/sys/class/rnbd-client/ctl/devices/<device_id>@<session_name>, which points
to the block device created by rnbd (/sys/block/rnbd<N>/).
The <device_id> of each device is created as follows:

8
Documentation/ABI/testing/sysfs-class-rnbd-server
View File

@ -48,3 +48,11 @@ Date: Feb 2020
KernelVersion: 5.7
Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
Description: Contains the device access mode: ro, rw or migration.
What: /sys/class/rnbd-server/ctl/devices/<device_name>/sessions/<session-name>/force_close
Date: Nov 2020
KernelVersion: 5.10
Contact: Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>
Description: Write "1" to the file to close the device on server side. Please
note that the client side device will not be closed, read or
write to the device will get -ENOTCONN.

35
Documentation/ABI/testing/sysfs-firmware-lefi-boardinfo Normal file
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@ -0,0 +1,35 @@
What: /sys/firmware/lefi/boardinfo
Date: October 2020
Contact: Tiezhu Yang <yangtiezhu@loongson.cn>
Description:
Get mainboard and BIOS info easily on the Loongson platform,
this is useful to point out the current used mainboard type
and BIOS version when there exists problems related with
hardware or firmware.
The related structures are already defined in the interface
specification about firmware and kernel which are common
requirement and specific for Loongson64, so only add a new
boardinfo.c file in arch/mips/loongson64.
For example:
[loongson@linux ~]$ cat /sys/firmware/lefi/boardinfo
Board Info
Manufacturer : LEMOTE
Board Name : LEMOTE-LS3A4000-7A1000-1w-V01-pc
Family : LOONGSON3
BIOS Info
Vendor : Kunlun
Version : Kunlun-A1901-V4.1.3-20200414093938
ROM Size : 4 KB
Release Date : 2020-04-14
By the way, using dmidecode command can get the similar info if there
exists SMBIOS in firmware, but the fact is that there is no SMBIOS on
some machines, we can see nothing when execute dmidecode, like this:
[root@linux loongson]# dmidecode
# dmidecode 2.12
# No SMBIOS nor DMI entry point found, sorry.

7
Documentation/admin-guide/pstore-blk.rst
View File

@ -35,7 +35,7 @@ module parameters have priority over Kconfig.
Here is an example for module parameters::
pstore_blk.blkdev=179:7 pstore_blk.kmsg_size=64
pstore_blk.blkdev=/dev/mmcblk0p7 pstore_blk.kmsg_size=64 best_effort=y
The detail of each configurations may be of interest to you.
@ -151,10 +151,7 @@ otherwise KMSG_DUMP_MAX.
Configurations for driver
-------------------------
Only a block device driver cares about these configurations. A block device
driver uses ``register_pstore_blk`` to register to pstore/blk.
A non-block device driver uses ``register_pstore_device`` with
A device driver uses ``register_pstore_device`` with
``struct pstore_device_info`` to register to pstore/blk.
.. kernel-doc:: fs/pstore/blk.c

2
Documentation/devicetree/bindings/mips/mscc.txt
View File

@ -4,7 +4,7 @@ Boards with a SoC of the Microsemi MIPS family shall have the following
properties:
Required properties:
- compatible: "mscc,ocelot"
- compatible: "mscc,ocelot", "mscc,luton", "mscc,serval" or "mscc,jr2"
* Other peripherals:

37
Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml Normal file
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@ -0,0 +1,37 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/reset/brcm,bcm6345-reset.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: BCM6345 reset controller
description: This document describes the BCM6345 reset controller.
maintainers:
- Álvaro Fernández Rojas <noltari@gmail.com>
properties:
compatible:
const: brcm,bcm6345-reset
reg:
maxItems: 1
"#reset-cells":
const: 1
required:
- compatible
- reg
- "#reset-cells"
additionalProperties: false
examples:
- |
reset-controller@10000010 {
compatible = "brcm,bcm6345-reset";
reg = <0x10000010 0x4>;
#reset-cells = <1>;
};

12
MAINTAINERS
View File

@ -7339,7 +7339,6 @@ F: drivers/staging/gasket/
GCC PLUGINS
M: Kees Cook <keescook@chromium.org>
R: Emese Revfy <re.emese@gmail.com>
L: linux-hardening@vger.kernel.org
S: Maintained
F: Documentation/kbuild/gcc-plugins.rst
@ -8744,19 +8743,16 @@ F: include/uapi/rdma/
F: samples/bpf/ibumad_kern.c
F: samples/bpf/ibumad_user.c
INGENIC JZ4780 DMA Driver
M: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
S: Maintained
F: drivers/dma/dma-jz4780.c
INGENIC JZ4780 NAND DRIVER
M: Harvey Hunt <harveyhuntnexus@gmail.com>
L: linux-mtd@lists.infradead.org
L: linux-mips@vger.kernel.org
S: Maintained
F: drivers/mtd/nand/raw/ingenic/
INGENIC JZ47xx SoCs
M: Paul Cercueil <paul@crapouillou.net>
L: linux-mips@vger.kernel.org
S: Maintained
F: arch/mips/boot/dts/ingenic/
F: arch/mips/generic/board-ingenic.c
@ -9718,7 +9714,7 @@ F: arch/arm64/kvm/
F: include/kvm/arm_*
KERNEL VIRTUAL MACHINE FOR MIPS (KVM/mips)
M: Huacai Chen <chenhc@lemote.com>
M: Huacai Chen <chenhuacai@kernel.org>
M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
L: linux-mips@vger.kernel.org
L: kvm@vger.kernel.org
@ -11860,7 +11856,7 @@ F: drivers/*/*/*loongson2*
F: drivers/*/*loongson2*
MIPS/LOONGSON64 ARCHITECTURE
M: Huacai Chen <chenhc@lemote.com>
M: Huacai Chen <chenhuacai@kernel.org>
M: Jiaxun Yang <jiaxun.yang@flygoat.com>
L: linux-mips@vger.kernel.org
S: Maintained

17
arch/Kconfig
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@ -486,6 +486,9 @@ config HAVE_ARCH_SECCOMP_FILTER
- secure_computing return value is checked and a return value of -1
results in the system call being skipped immediately.
- seccomp syscall wired up
- if !HAVE_SPARSE_SYSCALL_NR, have SECCOMP_ARCH_NATIVE,
SECCOMP_ARCH_NATIVE_NR, SECCOMP_ARCH_NATIVE_NAME defined. If
COMPAT is supported, have the SECCOMP_ARCH_COMPAT* defines too.
config SECCOMP
prompt "Enable seccomp to safely execute untrusted bytecode"
@ -514,6 +517,20 @@ config SECCOMP_FILTER
See Documentation/userspace-api/seccomp_filter.rst for details.
config SECCOMP_CACHE_DEBUG
bool "Show seccomp filter cache status in /proc/pid/seccomp_cache"
depends on SECCOMP_FILTER && !HAVE_SPARSE_SYSCALL_NR
depends on PROC_FS
help
This enables the /proc/pid/seccomp_cache interface to monitor
seccomp cache data. The file format is subject to change. Reading
the file requires CAP_SYS_ADMIN.
This option is for debugging only. Enabling presents the risk that
an adversary may be able to infer the seccomp filter logic.
If unsure, say N.
config HAVE_ARCH_STACKLEAK
bool
help

2
arch/alpha/include/asm/thread_info.h
View File

@ -62,6 +62,7 @@ register struct thread_info *__current_thread_info __asm__("$8");
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SYSCALL_AUDIT 4 /* syscall audit active */
#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
#define TIF_DIE_IF_KERNEL 9 /* dik recursion lock */
#define TIF_MEMDIE 13 /* is terminating due to OOM killer */
#define TIF_POLLING_NRFLAG 14 /* idle is polling for TIF_NEED_RESCHED */
@ -71,6 +72,7 @@ register struct thread_info *__current_thread_info __asm__("$8");
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
/* Work to do on interrupt/exception return. */

2
arch/alpha/kernel/entry.S
View File

@ -544,7 +544,7 @@ $ret_success:
.align 4
.type work_pending, @function
work_pending:
and $17, _TIF_NOTIFY_RESUME | _TIF_SIGPENDING, $2
and $17, _TIF_NOTIFY_RESUME | _TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL, $2
bne $2, $work_notifysig
$work_resched:

2
arch/alpha/kernel/signal.c
View File

@ -527,7 +527,7 @@ do_work_pending(struct pt_regs *regs, unsigned long thread_flags,
schedule();
} else {
local_irq_enable();
if (thread_flags & _TIF_SIGPENDING) {
if (thread_flags & (_TIF_SIGPENDING|_TIF_NOTIFY_SIGNAL)) {
do_signal(regs, r0, r19);
r0 = 0;
} else {

4
arch/arc/include/asm/thread_info.h
View File

@ -79,6 +79,7 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void)
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */
#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
#define TIF_SYSCALL_TRACE 15 /* syscall trace active */
/* true if poll_idle() is polling TIF_NEED_RESCHED */
@ -89,11 +90,12 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL)
#define _TIF_MEMDIE (1<<TIF_MEMDIE)
/* work to do on interrupt/exception return */
#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
_TIF_NOTIFY_RESUME)
_TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL)
/*
* _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it.

3
arch/arc/kernel/entry.S
View File

@ -307,7 +307,8 @@ resume_user_mode_begin:
mov r0, sp ; pt_regs for arg to do_signal()/do_notify_resume()
GET_CURR_THR_INFO_FLAGS r9
bbit0 r9, TIF_SIGPENDING, .Lchk_notify_resume
and.f 0, r9, TIF_SIGPENDING|TIF_NOTIFY_SIGNAL
bz .Lchk_notify_resume
; Normal Trap/IRQ entry only saves Scratch (caller-saved) regs
; in pt_reg since the "C" ABI (kernel code) will automatically

2
arch/arc/kernel/signal.c
View File

@ -362,7 +362,7 @@ void do_signal(struct pt_regs *regs)
restart_scall = in_syscall(regs) && syscall_restartable(regs);
if (get_signal(&ksig)) {
if (test_thread_flag(TIF_SIGPENDING) && get_signal(&ksig)) {
if (restart_scall) {
arc_restart_syscall(&ksig.ka, regs);
syscall_wont_restart(regs); /* No more restarts */

1
arch/arm/include/asm/Kbuild
View File

@ -4,7 +4,6 @@ generic-y += extable.h
generic-y += flat.h
generic-y += local64.h
generic-y += parport.h
generic-y += seccomp.h
generated-y += mach-types.h
generated-y += unistd-nr.h

11
arch/arm/include/asm/seccomp.h Normal file
View File

@ -0,0 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _ASM_SECCOMP_H
#define _ASM_SECCOMP_H
#include <asm-generic/seccomp.h>
#define SECCOMP_ARCH_NATIVE AUDIT_ARCH_ARM
#define SECCOMP_ARCH_NATIVE_NR NR_syscalls
#define SECCOMP_ARCH_NATIVE_NAME "arm"
#endif /* _ASM_SECCOMP_H */

7
arch/arm/include/asm/thread_info.h
View File

@ -126,6 +126,8 @@ extern int vfp_restore_user_hwstate(struct user_vfp *,
* thread information flags:
* TIF_USEDFPU - FPU was used by this task this quantum (SMP)
* TIF_POLLING_NRFLAG - true if poll_idle() is polling TIF_NEED_RESCHED
*
* Any bit in the range of 0..15 will cause do_work_pending() to be invoked.
*/
#define TIF_SIGPENDING 0 /* signal pending */
#define TIF_NEED_RESCHED 1 /* rescheduling necessary */
@ -135,6 +137,7 @@ extern int vfp_restore_user_hwstate(struct user_vfp *,
#define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */
#define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */
#define TIF_SECCOMP 7 /* seccomp syscall filtering active */
#define TIF_NOTIFY_SIGNAL 8 /* signal notifications exist */
#define TIF_USING_IWMMXT 17
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
@ -148,6 +151,7 @@ extern int vfp_restore_user_hwstate(struct user_vfp *,
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_USING_IWMMXT (1 << TIF_USING_IWMMXT)
/* Checks for any syscall work in entry-common.S */
@ -158,7 +162,8 @@ extern int vfp_restore_user_hwstate(struct user_vfp *,
* Change these and you break ASM code in entry-common.S
*/
#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
_TIF_NOTIFY_RESUME | _TIF_UPROBE)
_TIF_NOTIFY_RESUME | _TIF_UPROBE | \
_TIF_NOTIFY_SIGNAL)
#endif /* __KERNEL__ */
#endif /* __ASM_ARM_THREAD_INFO_H */

6
arch/arm/kernel/entry-common.S
View File

@ -53,7 +53,7 @@ __ret_fast_syscall:
cmp r2, #TASK_SIZE
blne addr_limit_check_failed
ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing
tst r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK
movs r1, r1, lsl #16
bne fast_work_pending
@ -90,7 +90,7 @@ __ret_fast_syscall:
cmp r2, #TASK_SIZE
blne addr_limit_check_failed
ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing
tst r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK
movs r1, r1, lsl #16
beq no_work_pending
UNWIND(.fnend )
ENDPROC(ret_fast_syscall)
@ -131,7 +131,7 @@ ENTRY(ret_to_user_from_irq)
cmp r2, #TASK_SIZE
blne addr_limit_check_failed
ldr r1, [tsk, #TI_FLAGS]
tst r1, #_TIF_WORK_MASK
movs r1, r1, lsl #16
bne slow_work_pending
no_work_pending:
asm_trace_hardirqs_on save = 0

2
arch/arm/kernel/entry-v7m.S
View File

@ -59,7 +59,7 @@ __irq_entry:
get_thread_info tsk
ldr r2, [tsk, #TI_FLAGS]
tst r2, #_TIF_WORK_MASK
movs r2, r2, lsl #16
beq 2f @ no work pending
mov r0, #V7M_SCB_ICSR_PENDSVSET
str r0, [r1, V7M_SCB_ICSR] @ raise PendSV

2
arch/arm/kernel/signal.c
View File

@ -655,7 +655,7 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
if (unlikely(!user_mode(regs)))
return 0;
local_irq_enable();
if (thread_flags & _TIF_SIGPENDING) {
if (thread_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {
int restart = do_signal(regs, syscall);
if (unlikely(restart)) {
/*

9
arch/arm64/include/asm/seccomp.h
View File

@ -19,4 +19,13 @@
#include <asm-generic/seccomp.h>
#define SECCOMP_ARCH_NATIVE AUDIT_ARCH_AARCH64
#define SECCOMP_ARCH_NATIVE_NR NR_syscalls
#define SECCOMP_ARCH_NATIVE_NAME "aarch64"
#ifdef CONFIG_COMPAT
# define SECCOMP_ARCH_COMPAT AUDIT_ARCH_ARM
# define SECCOMP_ARCH_COMPAT_NR __NR_compat_syscalls
# define SECCOMP_ARCH_COMPAT_NAME "arm"
#endif
#endif /* _ASM_SECCOMP_H */

3
arch/arm64/include/asm/thread_info.h
View File

@ -65,6 +65,7 @@ void arch_release_task_struct(struct task_struct *tsk);
#define TIF_UPROBE 4 /* uprobe breakpoint or singlestep */
#define TIF_MTE_ASYNC_FAULT 5 /* MTE Asynchronous Tag Check Fault */
#define TIF_CHECK_32BIT_AFFINITY 6 /* Check thread affinity for asymmetric AArch32 */
#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */
#define TIF_SYSCALL_TRACE 8 /* syscall trace active */
#define TIF_SYSCALL_AUDIT 9 /* syscall auditing */
#define TIF_SYSCALL_TRACEPOINT 10 /* syscall tracepoint for ftrace */
@ -95,10 +96,12 @@ void arch_release_task_struct(struct task_struct *tsk);
#define _TIF_CHECK_32BIT_AFFINITY (1 << TIF_CHECK_32BIT_AFFINITY)
#define _TIF_SVE (1 << TIF_SVE)
#define _TIF_MTE_ASYNC_FAULT (1 << TIF_MTE_ASYNC_FAULT)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
_TIF_NOTIFY_RESUME | _TIF_FOREIGN_FPSTATE | \
_TIF_UPROBE | _TIF_MTE_ASYNC_FAULT | \
_TIF_NOTIFY_SIGNAL | \
_TIF_CHECK_32BIT_AFFINITY)
#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \

2
arch/arm64/kernel/signal.c
View File

@ -978,7 +978,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs,
(void __user *)NULL, current);
}
if (thread_flags & _TIF_SIGPENDING)
if (thread_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs);
if (thread_flags & _TIF_NOTIFY_RESUME) {

1
arch/c6x/include/asm/thread_info.h
View File

@ -82,6 +82,7 @@ struct thread_info *current_thread_info(void)
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */
#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
#define TIF_MEMDIE 17 /* OOM killer killed process */

1
arch/c6x/kernel/asm-offsets.c
View File

@ -116,6 +116,7 @@ void foo(void)
DEFINE(_TIF_NOTIFY_RESUME, (1<<TIF_NOTIFY_RESUME));
DEFINE(_TIF_SIGPENDING, (1<<TIF_SIGPENDING));
DEFINE(_TIF_NEED_RESCHED, (1<<TIF_NEED_RESCHED));
DEFINE(_TIF_NOTIFY_SIGNAL, (1<<TIF_NOTIFY_SIGNAL));
DEFINE(_TIF_ALLWORK_MASK, TIF_ALLWORK_MASK);
DEFINE(_TIF_WORK_MASK, TIF_WORK_MASK);

3
arch/c6x/kernel/signal.c
View File

@ -13,6 +13,7 @@
#include <linux/syscalls.h>
#include <linux/tracehook.h>
#include <asm/asm-offsets.h>
#include <asm/ucontext.h>
#include <asm/cacheflush.h>
@ -313,7 +314,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags,
int syscall)
{
/* deal with pending signal delivery */
if (thread_info_flags & (1 << TIF_SIGPENDING))
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs, syscall);
if (thread_info_flags & (1 << TIF_NOTIFY_RESUME))

1
arch/csky/include/asm/Kbuild
View File

@ -4,6 +4,5 @@ generic-y += gpio.h
generic-y += kvm_para.h
generic-y += local64.h
generic-y += qrwlock.h
generic-y += seccomp.h
generic-y += user.h
generic-y += vmlinux.lds.h

11
arch/csky/include/asm/seccomp.h Normal file
View File

@ -0,0 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _ASM_SECCOMP_H
#define _ASM_SECCOMP_H
#include <asm-generic/seccomp.h>
#define SECCOMP_ARCH_NATIVE AUDIT_ARCH_CSKY
#define SECCOMP_ARCH_NATIVE_NR NR_syscalls
#define SECCOMP_ARCH_NATIVE_NAME "csky"
#endif /* _ASM_SECCOMP_H */

5
arch/csky/include/asm/thread_info.h
View File

@ -64,6 +64,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_SYSCALL_TRACE 4 /* syscall trace active */
#define TIF_SYSCALL_TRACEPOINT 5 /* syscall tracepoint instrumentation */
#define TIF_SYSCALL_AUDIT 6 /* syscall auditing */
#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */
#define TIF_POLLING_NRFLAG 16 /* poll_idle() is TIF_NEED_RESCHED */
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
#define TIF_RESTORE_SIGMASK 20 /* restore signal mask in do_signal() */
@ -75,6 +76,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_UPROBE (1 << TIF_UPROBE)
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
#define _TIF_MEMDIE (1 << TIF_MEMDIE)
@ -82,7 +84,8 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \
_TIF_NOTIFY_RESUME | _TIF_UPROBE)
_TIF_NOTIFY_RESUME | _TIF_UPROBE | \
_TIF_NOTIFY_SIGNAL)
#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
_TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)

2
arch/csky/kernel/signal.c
View File

@ -257,7 +257,7 @@ asmlinkage void do_notify_resume(struct pt_regs *regs,
uprobe_notify_resume(regs);
/* Handle pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME) {

4
arch/h8300/include/asm/thread_info.h
View File

@ -73,6 +73,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */
#define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */
#define TIF_POLLING_NRFLAG 9 /* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_NOTIFY_SIGNAL 10 /* signal notifications exist */
/* as above, but as bit values */
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
@ -83,6 +84,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
/* work to do in syscall trace */
#define _TIF_WORK_SYSCALL_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \
@ -92,7 +94,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \
_TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \
_TIF_SINGLESTEP | _TIF_NOTIFY_RESUME | \
_TIF_SYSCALL_TRACEPOINT)
_TIF_SYSCALL_TRACEPOINT | _TIF_NOTIFY_SIGNAL)
/* work to do on interrupt/exception return */
#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \

2
arch/h8300/kernel/signal.c
View File

@ -279,7 +279,7 @@ static void do_signal(struct pt_regs *regs)
asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags)
{
if (thread_info_flags & _TIF_SIGPENDING)
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs);
if (thread_info_flags & _TIF_NOTIFY_RESUME)

2
arch/hexagon/include/asm/thread_info.h
View File

@ -95,6 +95,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG);
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SINGLESTEP 4 /* restore ss @ return to usr mode */
#define TIF_RESTORE_SIGMASK 6 /* restore sig mask in do_signal() */
#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */
/* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_MEMDIE 17 /* OOM killer killed process */
@ -103,6 +104,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG);
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
/* work to do on interrupt/exception return - All but TIF_SYSCALL_TRACE */
#define _TIF_WORK_MASK (0x0000FFFF & ~_TIF_SYSCALL_TRACE)

2
arch/hexagon/kernel/process.c
View File

@ -174,7 +174,7 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
return 1;
}
if (thread_info_flags & _TIF_SIGPENDING) {
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {
do_signal(regs);
return 1;
}

4
arch/ia64/include/asm/thread_info.h
View File

@ -103,6 +103,7 @@ struct thread_info {
#define TIF_SYSCALL_TRACE 2 /* syscall trace active */
#define TIF_SYSCALL_AUDIT 3 /* syscall auditing active */
#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */
#define TIF_NOTIFY_SIGNAL 5 /* signal notification exist */
#define TIF_NOTIFY_RESUME 6 /* resumption notification requested */
#define TIF_MEMDIE 17 /* is terminating due to OOM killer */
#define TIF_MCA_INIT 18 /* this task is processing MCA or INIT */
@ -115,6 +116,7 @@ struct thread_info {
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
#define _TIF_SYSCALL_TRACEAUDIT (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP)
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
#define _TIF_MCA_INIT (1 << TIF_MCA_INIT)
@ -124,7 +126,7 @@ struct thread_info {
/* "work to do on user-return" bits */
#define TIF_ALLWORK_MASK (_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SYSCALL_AUDIT|\
_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE)
_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_NOTIFY_SIGNAL)
/* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */
#define TIF_WORK_MASK (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT))

3
arch/ia64/kernel/process.c
View File

@ -171,7 +171,8 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
}
/* deal with pending signal delivery */
if (test_thread_flag(TIF_SIGPENDING)) {
if (test_thread_flag(TIF_SIGPENDING) ||
test_thread_flag(TIF_NOTIFY_SIGNAL)) {
local_irq_enable(); /* force interrupt enable */
ia64_do_signal(scr, in_syscall);
}

1
arch/m68k/include/asm/thread_info.h
View File

@ -60,6 +60,7 @@ static inline struct thread_info *current_thread_info(void)
* bits 0-7 are tested at every exception exit
* bits 8-15 are also tested at syscall exit
*/
#define TIF_NOTIFY_SIGNAL 4
#define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
#define TIF_SIGPENDING 6 /* signal pending */
#define TIF_NEED_RESCHED 7 /* rescheduling necessary */

3
arch/m68k/kernel/signal.c
View File

@ -1133,7 +1133,8 @@ static void do_signal(struct pt_regs *regs)
void do_notify_resume(struct pt_regs *regs)
{
if (test_thread_flag(TIF_SIGPENDING))
if (test_thread_flag(TIF_NOTIFY_SIGNAL) ||
test_thread_flag(TIF_SIGPENDING))
do_signal(regs);
if (test_thread_flag(TIF_NOTIFY_RESUME))

53
arch/microblaze/Kconfig
View File

@ -3,19 +3,17 @@ config MICROBLAZE
def_bool y
select ARCH_32BIT_OFF_T
select ARCH_NO_SWAP
select ARCH_HAS_BINFMT_FLAT if !MMU
select ARCH_HAS_DMA_PREP_COHERENT
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_HAS_DMA_SET_UNCACHED if !MMU
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_TABLE_SORT
select TIMER_OF
select CLONE_BACKWARDS3
select COMMON_CLK
select DMA_DIRECT_REMAP if MMU
select DMA_DIRECT_REMAP
select GENERIC_ATOMIC64
select GENERIC_CPU_DEVICES
select GENERIC_IDLE_POLL_SETUP
@ -44,7 +42,7 @@ config MICROBLAZE
select TRACING_SUPPORT
select VIRT_TO_BUS
select CPU_NO_EFFICIENT_FFS
select MMU_GATHER_NO_RANGE if MMU
select MMU_GATHER_NO_RANGE
select SPARSE_IRQ
select SET_FS
@ -95,8 +93,7 @@ menu "Processor type and features"
source "kernel/Kconfig.hz"
config MMU
bool "MMU support"
default n
def_bool y
comment "Boot options"
@ -142,18 +139,8 @@ config ADVANCED_OPTIONS
comment "Default settings for advanced configuration options are used"
depends on !ADVANCED_OPTIONS
config XILINX_UNCACHED_SHADOW
bool "Are you using uncached shadow for RAM ?"
depends on ADVANCED_OPTIONS && !MMU
default n
help
This is needed to be able to allocate uncachable memory regions.
The feature requires the design to define the RAM memory controller
window to be twice as large as the actual physical memory.
config HIGHMEM
bool "High memory support"
depends on MMU
select KMAP_LOCAL
help
The address space of Microblaze processors is only 4 Gigabytes large
@ -167,7 +154,7 @@ config HIGHMEM
config LOWMEM_SIZE_BOOL
bool "Set maximum low memory"
depends on ADVANCED_OPTIONS && MMU
depends on ADVANCED_OPTIONS
help
This option allows you to set the maximum amount of memory which
will be used as "low memory", that is, memory which the kernel can
@ -205,12 +192,11 @@ config KERNEL_START_BOOL
config KERNEL_START
hex "Virtual address of kernel base" if KERNEL_START_BOOL
default "0xc0000000" if MMU
default KERNEL_BASE_ADDR if !MMU
default "0xc0000000"
config TASK_SIZE_BOOL
bool "Set custom user task size"
depends on ADVANCED_OPTIONS && MMU
depends on ADVANCED_OPTIONS
help
This option allows you to set the amount of virtual address space
allocated to user tasks. This can be useful in optimizing the
@ -222,33 +208,6 @@ config TASK_SIZE
hex "Size of user task space" if TASK_SIZE_BOOL
default "0x80000000"
choice
prompt "Page size"
default MICROBLAZE_4K_PAGES
depends on ADVANCED_OPTIONS && !MMU
help
Select the kernel logical page size. Increasing the page size
will reduce software overhead at each page boundary, allow
hardware prefetch mechanisms to be more effective, and allow
larger dma transfers increasing IO efficiency and reducing
overhead. However the utilization of memory will increase.
For example, each cached file will using a multiple of the
page size to hold its contents and the difference between the
end of file and the end of page is wasted.
If unsure, choose 4K_PAGES.
config MICROBLAZE_4K_PAGES
bool "4k page size"
config MICROBLAZE_16K_PAGES
bool "16k page size"
config MICROBLAZE_64K_PAGES
bool "64k page size"
endchoice
endmenu
menu "Bus Options"

11
arch/microblaze/Makefile
View File

@ -1,11 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
KBUILD_DEFCONFIG := mmu_defconfig
ifeq ($(CONFIG_MMU),y)
UTS_SYSNAME = -DUTS_SYSNAME=\"Linux\"
else
UTS_SYSNAME = -DUTS_SYSNAME=\"uClinux\"
endif
# What CPU vesion are we building for, and crack it open
# as major.minor.rev
@ -67,12 +63,7 @@ DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
core-y += $(boot)/dts/
# defines filename extension depending memory management type
ifeq ($(CONFIG_MMU),)
MMU := -nommu
endif
export MMU DTB
export DTB
all: linux.bin

1
arch/microblaze/configs/mmu_defconfig
View File

@ -16,7 +16,6 @@ CONFIG_XILINX_MICROBLAZE0_USE_DIV=1
CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=2
CONFIG_XILINX_MICROBLAZE0_USE_FPU=2
CONFIG_HZ_100=y
CONFIG_MMU=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE_FORCE=y
CONFIG_HIGHMEM=y

90
arch/microblaze/configs/nommu_defconfig
View File

@ -1,90 +0,0 @@
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_AUDIT=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
# CONFIG_BASE_FULL is not set
CONFIG_KALLSYMS_ALL=y
CONFIG_EMBEDDED=y
CONFIG_SLAB=y
CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR=1
CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR=1
CONFIG_XILINX_MICROBLAZE0_USE_BARREL=1
CONFIG_XILINX_MICROBLAZE0_USE_DIV=1
CONFIG_XILINX_MICROBLAZE0_USE_HW_MUL=2
CONFIG_XILINX_MICROBLAZE0_USE_FPU=2
CONFIG_HZ_100=y
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE_FORCE=y
CONFIG_PCI_XILINX=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_PARTITION_ADVANCED=y
# CONFIG_EFI_PARTITION is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_IPV6 is not set
CONFIG_PCI=y
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_RAM=y
CONFIG_MTD_UCLINUX=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_NETDEVICES=y
CONFIG_XILINX_EMACLITE=y
CONFIG_XILINX_LL_TEMAC=y
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_UARTLITE=y
CONFIG_SERIAL_UARTLITE_CONSOLE=y
# CONFIG_HW_RANDOM is not set
CONFIG_XILINX_HWICAP=y
CONFIG_I2C=y
CONFIG_I2C_XILINX=y
CONFIG_SPI=y
CONFIG_SPI_XILINX=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_XILINX=y
CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_GPIO_RESTART=y
# CONFIG_HWMON is not set
CONFIG_WATCHDOG=y
CONFIG_XILINX_WATCHDOG=y
CONFIG_FB=y
CONFIG_FB_XILINX=y
# CONFIG_USB_SUPPORT is not set
CONFIG_EXT3_FS=y
# CONFIG_DNOTIFY is not set
CONFIG_CRAMFS=y
CONFIG_ROMFS_FS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NLS=y
CONFIG_KEYS=y
CONFIG_ENCRYPTED_KEYS=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_ARC4=y
CONFIG_CRYPTO_DES=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_SLAB=y
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEBUG_SPINLOCK=y

6
arch/microblaze/include/asm/dma.h
View File

@ -6,14 +6,8 @@
#ifndef _ASM_MICROBLAZE_DMA_H
#define _ASM_MICROBLAZE_DMA_H
#ifndef CONFIG_MMU
/* we don't have dma address limit. define it as zero to be
* unlimited. */
#define MAX_DMA_ADDRESS (0)
#else
/* Virtual address corresponding to last available physical memory address. */
#define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1)
#endif
#ifdef CONFIG_PCI
extern int isa_dma_bridge_buggy;

5
arch/microblaze/include/asm/exceptions.h
View File

@ -11,11 +11,6 @@
#define _ASM_MICROBLAZE_EXCEPTIONS_H
#ifdef __KERNEL__
#ifndef CONFIG_MMU
#define EX_HANDLER_STACK_SIZ (4*19)
#endif
#ifndef __ASSEMBLY__
/* Macros to enable and disable HW exceptions in the MSR */

3
arch/microblaze/include/asm/io.h
View File

@ -30,15 +30,12 @@ extern resource_size_t isa_mem_base;
#define PCI_IOBASE ((void __iomem *)_IO_BASE)
#define IO_SPACE_LIMIT (0xFFFFFFFF)
#ifdef CONFIG_MMU
#define page_to_bus(page) (page_to_phys(page))
extern void iounmap(volatile void __iomem *addr);
extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
#endif /* CONFIG_MMU */
/* Big Endian */
#define out_be32(a, v) __raw_writel((v), (void __iomem __force *)(a))
#define out_be16(a, v) __raw_writew((v), (a))

4
arch/microblaze/include/asm/mmu.h
View File

@ -8,9 +8,6 @@
#ifndef _ASM_MICROBLAZE_MMU_H
#define _ASM_MICROBLAZE_MMU_H
# ifndef CONFIG_MMU
# include <asm-generic/mmu.h>
# else /* CONFIG_MMU */
# ifdef __KERNEL__
# ifndef __ASSEMBLY__
@ -119,5 +116,4 @@ extern u32 tlb_skip;
# define TLB_G 0x00000001 /* Memory is guarded from prefetch */
# endif /* __KERNEL__ */
# endif /* CONFIG_MMU */
#endif /* _ASM_MICROBLAZE_MMU_H */

4
arch/microblaze/include/asm/mmu_context.h
View File

@ -1,6 +1,2 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifdef CONFIG_MMU
# include <asm/mmu_context_mm.h>
#else
# include <asm-generic/nommu_context.h>
#endif

59
arch/microblaze/include/asm/page.h
View File

@ -20,13 +20,7 @@
#ifdef __KERNEL__
/* PAGE_SHIFT determines the page size */
#if defined(CONFIG_MICROBLAZE_64K_PAGES)
#define PAGE_SHIFT 16
#elif defined(CONFIG_MICROBLAZE_16K_PAGES)
#define PAGE_SHIFT 14
#else
#define PAGE_SHIFT 12
#endif
#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
@ -44,17 +38,6 @@
#define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
#define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1)))
#ifndef CONFIG_MMU
/*
* PAGE_OFFSET -- the first address of the first page of memory. When not
* using MMU this corresponds to the first free page in physical memory (aligned
* on a page boundary).
*/
extern unsigned int __page_offset;
#define PAGE_OFFSET __page_offset
#else /* CONFIG_MMU */
/*
* PAGE_OFFSET -- the first address of the first page of memory. With MMU
* it is set to the kernel start address (aligned on a page boundary).
@ -70,8 +53,6 @@ extern unsigned int __page_offset;
typedef unsigned long pte_basic_t;
#define PTE_FMT "%.8lx"
#endif /* CONFIG_MMU */
# define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
# define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
@ -86,25 +67,12 @@ typedef struct page *pgtable_t;
typedef struct { unsigned long pte; } pte_t;
typedef struct { unsigned long pgprot; } pgprot_t;
/* FIXME this can depend on linux kernel version */
# ifdef CONFIG_MMU
typedef struct { unsigned long pgd; } pgd_t;
# else /* CONFIG_MMU */
typedef struct { unsigned long ste[64]; } pmd_t;
typedef struct { pmd_t pue[1]; } pud_t;
typedef struct { pud_t p4e[1]; } p4d_t;
typedef struct { p4d_t pge[1]; } pgd_t;
# endif /* CONFIG_MMU */
# define pte_val(x) ((x).pte)
# define pgprot_val(x) ((x).pgprot)
# ifdef CONFIG_MMU
# define pgd_val(x) ((x).pgd)
# else /* CONFIG_MMU */
# define pmd_val(x) ((x).ste[0])
# define pud_val(x) ((x).pue[0])
# define pgd_val(x) ((x).pge[0])
# endif /* CONFIG_MMU */
# define __pte(x) ((pte_t) { (x) })
# define __pgd(x) ((pgd_t) { (x) })
@ -142,28 +110,12 @@ extern int page_is_ram(unsigned long pfn);
# define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr))))
# define pfn_to_virt(pfn) __va(pfn_to_phys((pfn)))
# ifdef CONFIG_MMU
# define virt_to_page(kaddr) (pfn_to_page(__pa(kaddr) >> PAGE_SHIFT))
# define page_to_virt(page) __va(page_to_pfn(page) << PAGE_SHIFT)
# define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
# else /* CONFIG_MMU */
# define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr)))
# define page_to_virt(page) (pfn_to_virt(page_to_pfn(page)))
# define page_to_phys(page) (pfn_to_phys(page_to_pfn(page)))
# define page_to_bus(page) (page_to_phys(page))
# define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr)))
# endif /* CONFIG_MMU */
# ifndef CONFIG_MMU
# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && \
((pfn) <= (min_low_pfn + max_mapnr)))
# define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
# else /* CONFIG_MMU */
# define ARCH_PFN_OFFSET (memory_start >> PAGE_SHIFT)
# define pfn_valid(pfn) ((pfn) < (max_mapnr + ARCH_PFN_OFFSET))
# endif /* CONFIG_MMU */
# endif /* __ASSEMBLY__ */
@ -174,12 +126,6 @@ extern int page_is_ram(unsigned long pfn);
/* Convert between virtual and physical address for MMU. */
/* Handle MicroBlaze processor with virtual memory. */
#ifndef CONFIG_MMU
#define __virt_to_phys(addr) addr
#define __phys_to_virt(addr) addr
#define tophys(rd, rs) addik rd, rs, 0
#define tovirt(rd, rs) addik rd, rs, 0
#else
#define __virt_to_phys(addr) \
((addr) + CONFIG_KERNEL_BASE_ADDR - CONFIG_KERNEL_START)
#define __phys_to_virt(addr) \
@ -188,14 +134,9 @@ extern int page_is_ram(unsigned long pfn);
addik rd, rs, (CONFIG_KERNEL_BASE_ADDR - CONFIG_KERNEL_START)
#define tovirt(rd, rs) \
addik rd, rs, (CONFIG_KERNEL_START - CONFIG_KERNEL_BASE_ADDR)
#endif /* CONFIG_MMU */
#define TOPHYS(addr) __virt_to_phys(addr)
#ifdef CONFIG_MMU
#endif /* CONFIG_MMU */
#endif /* __KERNEL__ */
#include <asm-generic/memory_model.h>

4
arch/microblaze/include/asm/pgalloc.h
View File

@ -8,8 +8,6 @@
#ifndef _ASM_MICROBLAZE_PGALLOC_H
#define _ASM_MICROBLAZE_PGALLOC_H
#ifdef CONFIG_MMU
#include <linux/kernel.h> /* For min/max macros */
#include <linux/highmem.h>
#include <linux/pgtable.h>
@ -42,6 +40,4 @@ extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
#define pmd_populate_kernel(mm, pmd, pte) \
(pmd_val(*(pmd)) = (unsigned long) (pte))
#endif /* CONFIG_MMU */
#endif /* _ASM_MICROBLAZE_PGALLOC_H */

43
arch/microblaze/include/asm/pgtable.h
View File

@ -14,47 +14,6 @@
extern int mem_init_done;
#endif
#ifndef CONFIG_MMU
#define pgd_present(pgd) (1) /* pages are always present on non MMU */
#define pgd_none(pgd) (0)
#define pgd_bad(pgd) (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
#define PAGE_NONE __pgprot(0) /* these mean nothing to non MMU */
#define PAGE_SHARED __pgprot(0) /* these mean nothing to non MMU */
#define PAGE_COPY __pgprot(0) /* these mean nothing to non MMU */
#define PAGE_READONLY __pgprot(0) /* these mean nothing to non MMU */
#define PAGE_KERNEL __pgprot(0) /* these mean nothing to non MMU */
#define pgprot_noncached(x) (x)
#define pgprot_writecombine pgprot_noncached
#define pgprot_device pgprot_noncached
#define __swp_type(x) (0)
#define __swp_offset(x) (0)
#define __swp_entry(typ, off) ((swp_entry_t) { ((typ) | ((off) << 7)) })
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
#define ZERO_PAGE(vaddr) ({ BUG(); NULL; })
#define swapper_pg_dir ((pgd_t *) NULL)
#define arch_enter_lazy_cpu_mode() do {} while (0)
#define pgprot_noncached_wc(prot) prot
/*
* All 32bit addresses are effectively valid for vmalloc...
* Sort of meaningless for non-VM targets.
*/
#define VMALLOC_START 0
#define VMALLOC_END 0xffffffff
#else /* CONFIG_MMU */
#include <asm-generic/pgtable-nopmd.h>
#ifdef __KERNEL__
@ -491,8 +450,6 @@ void __init *early_get_page(void);
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* CONFIG_MMU */
#ifndef __ASSEMBLY__
extern unsigned long ioremap_bot, ioremap_base;

37
arch/microblaze/include/asm/processor.h
View File

@ -31,42 +31,6 @@ extern void ret_from_kernel_thread(void);
# endif /* __ASSEMBLY__ */
# ifndef CONFIG_MMU
/*
* User space process size: memory size
*
* TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both
* user processes and the kernel is on the same memory region. They
* both share the memory space and that is limited by the amount of
* physical memory. thus, we set TASK_SIZE == amount of total memory.
*/
# define TASK_SIZE (0x81000000 - 0x80000000)
/*
* This decides where the kernel will search for a free chunk of vm
* space during mmap's. We won't be using it
*/
# define TASK_UNMAPPED_BASE 0
/* definition in include/linux/sched.h */
struct task_struct;
/* thread_struct is gone. use thread_info instead. */
struct thread_struct { };
# define INIT_THREAD { }
/* Free all resources held by a thread. */
static inline void release_thread(struct task_struct *dead_task)
{
}
extern unsigned long get_wchan(struct task_struct *p);
# define KSTK_EIP(tsk) (0)
# define KSTK_ESP(tsk) (0)
# else /* CONFIG_MMU */
/*
* This is used to define STACK_TOP, and with MMU it must be below
* kernel base to select the correct PGD when handling MMU exceptions.
@ -130,5 +94,4 @@ extern struct dentry *of_debugfs_root;
#endif
# endif /* __ASSEMBLY__ */
# endif /* CONFIG_MMU */
#endif /* _ASM_MICROBLAZE_PROCESSOR_H */

2
arch/microblaze/include/asm/registers.h
View File

@ -27,7 +27,6 @@
#define FSR_UF (1<<1) /* Underflow */
#define FSR_DO (1<<0) /* Denormalized operand error */
# ifdef CONFIG_MMU
/* Machine State Register (MSR) Fields */
# define MSR_UM (1<<11) /* User Mode */
# define MSR_UMS (1<<12) /* User Mode Save */
@ -43,5 +42,4 @@
# define ESR_DIZ (1<<11) /* Zone Protection */
# define ESR_S (1<<10) /* Store instruction */
# endif /* CONFIG_MMU */
#endif /* _ASM_MICROBLAZE_REGISTERS_H */

2
arch/microblaze/include/asm/setup.h
View File

@ -14,9 +14,7 @@ extern char cmd_line[COMMAND_LINE_SIZE];
extern char *klimit;
# ifdef CONFIG_MMU
extern void mmu_reset(void);
# endif /* CONFIG_MMU */
void time_init(void);
void init_IRQ(void);

2
arch/microblaze/include/asm/thread_info.h
View File

@ -107,6 +107,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
/* restore singlestep on return to user mode */
#define TIF_SINGLESTEP 4
#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
#define TIF_MEMDIE 6 /* is terminating due to OOM killer */
#define TIF_SYSCALL_AUDIT 9 /* syscall auditing active */
#define TIF_SECCOMP 10 /* secure computing */
@ -119,6 +120,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)

14
arch/microblaze/include/asm/tlbflush.h
View File

@ -8,8 +8,6 @@
#ifndef _ASM_MICROBLAZE_TLBFLUSH_H
#define _ASM_MICROBLAZE_TLBFLUSH_H
#ifdef CONFIG_MMU
#include <linux/sched.h>
#include <linux/threads.h>
#include <asm/processor.h> /* For TASK_SIZE */
@ -50,16 +48,4 @@ static inline void local_flush_tlb_range(struct vm_area_struct *vma,
static inline void flush_tlb_pgtables(struct mm_struct *mm,
unsigned long start, unsigned long end) { }
#else /* CONFIG_MMU */
#define flush_tlb() BUG()
#define flush_tlb_all() BUG()
#define flush_tlb_mm(mm) BUG()
#define flush_tlb_page(vma, addr) BUG()
#define flush_tlb_range(mm, start, end) BUG()
#define flush_tlb_pgtables(mm, start, end) BUG()
#define flush_tlb_kernel_range(start, end) BUG()
#endif /* CONFIG_MMU */
#endif /* _ASM_MICROBLAZE_TLBFLUSH_H */

27
arch/microblaze/include/asm/uaccess.h
View File

@ -30,35 +30,14 @@
*/
# define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
# ifndef CONFIG_MMU
# define KERNEL_DS MAKE_MM_SEG(0)
# define USER_DS KERNEL_DS
# else
# define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFF)
# define USER_DS MAKE_MM_SEG(TASK_SIZE - 1)
# endif
# define get_fs() (current_thread_info()->addr_limit)
# define set_fs(val) (current_thread_info()->addr_limit = (val))
# define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg)
#ifndef CONFIG_MMU
/* Check against bounds of physical memory */
static inline int ___range_ok(unsigned long addr, unsigned long size)
{
return ((addr < memory_start) ||
((addr + size - 1) > (memory_start + memory_size - 1)));
}
#define __range_ok(addr, size) \
___range_ok((unsigned long)(addr), (unsigned long)(size))
#define access_ok(addr, size) (__range_ok((addr), (size)) == 0)
#else
static inline int access_ok(const void __user *addr, unsigned long size)
{
if (!size)
@ -77,15 +56,9 @@ static inline int access_ok(const void __user *addr, unsigned long size)
(u32)get_fs().seg);
return 1;
}
#endif
#ifdef CONFIG_MMU
# define __FIXUP_SECTION ".section .fixup,\"ax\"\n"
# define __EX_TABLE_SECTION ".section __ex_table,\"a\"\n"
#else
# define __FIXUP_SECTION ".section .discard,\"ax\"\n"
# define __EX_TABLE_SECTION ".section .discard,\"ax\"\n"
#endif
extern unsigned long __copy_tofrom_user(void __user *to,
const void __user *from, unsigned long size);

4
arch/microblaze/kernel/Makefile
View File

@ -22,9 +22,9 @@ obj-y += dma.o exceptions.o \
obj-y += cpu/
obj-$(CONFIG_MODULES) += microblaze_ksyms.o module.o
obj-$(CONFIG_MMU) += misc.o
obj-y += misc.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o mcount.o
obj-$(CONFIG_KGDB) += kgdb.o
obj-y += entry$(MMU).o
obj-y += entry.o

2
arch/microblaze/kernel/asm-offsets.c
View File

@ -70,7 +70,6 @@ int main(int argc, char *argv[])
/* struct task_struct */
DEFINE(TS_THREAD_INFO, offsetof(struct task_struct, stack));
#ifdef CONFIG_MMU
DEFINE(TASK_STATE, offsetof(struct task_struct, state));
DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
@ -84,7 +83,6 @@ int main(int argc, char *argv[])
DEFINE(PGDIR, offsetof(struct thread_struct, pgdir));
BLANK();
#endif
/* struct thread_info */
DEFINE(TI_TASK, offsetof(struct thread_info, task));

622
arch/microblaze/kernel/entry-nommu.S
View File

@ -1,622 +0,0 @@
/*
* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
* Copyright (C) 2007-2009 PetaLogix
* Copyright (C) 2006 Atmark Techno, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/linkage.h>
#include <asm/thread_info.h>
#include <linux/errno.h>
#include <asm/entry.h>
#include <asm/asm-offsets.h>
#include <asm/registers.h>
#include <asm/unistd.h>
#include <asm/percpu.h>
#include <asm/signal.h>
#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
.macro disable_irq
msrclr r0, MSR_IE
.endm
.macro enable_irq
msrset r0, MSR_IE
.endm
.macro clear_bip
msrclr r0, MSR_BIP
.endm
#else
.macro disable_irq
mfs r11, rmsr
andi r11, r11, ~MSR_IE
mts rmsr, r11
.endm
.macro enable_irq
mfs r11, rmsr
ori r11, r11, MSR_IE
mts rmsr, r11
.endm
.macro clear_bip
mfs r11, rmsr
andi r11, r11, ~MSR_BIP
mts rmsr, r11
.endm
#endif
ENTRY(_interrupt)
swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
lwi r11, r0, PER_CPU(KM) /* load mode indicator */
beqid r11, 1f
nop
brid 2f /* jump over */
addik r1, r1, (-PT_SIZE) /* room for pt_regs (delay slot) */
1: /* switch to kernel stack */
lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
lwi r1, r1, TS_THREAD_INFO /* get the thread info */
/* calculate kernel stack pointer */
addik r1, r1, THREAD_SIZE - PT_SIZE
2:
swi r11, r1, PT_MODE /* store the mode */
lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
swi r2, r1, PT_R2
swi r3, r1, PT_R3
swi r4, r1, PT_R4
swi r5, r1, PT_R5
swi r6, r1, PT_R6
swi r7, r1, PT_R7
swi r8, r1, PT_R8
swi r9, r1, PT_R9
swi r10, r1, PT_R10
swi r11, r1, PT_R11
swi r12, r1, PT_R12
swi r13, r1, PT_R13
swi r14, r1, PT_R14
swi r14, r1, PT_PC
swi r15, r1, PT_R15
swi r16, r1, PT_R16
swi r17, r1, PT_R17
swi r18, r1, PT_R18
swi r19, r1, PT_R19
swi r20, r1, PT_R20
swi r21, r1, PT_R21
swi r22, r1, PT_R22
swi r23, r1, PT_R23
swi r24, r1, PT_R24
swi r25, r1, PT_R25
swi r26, r1, PT_R26
swi r27, r1, PT_R27
swi r28, r1, PT_R28
swi r29, r1, PT_R29
swi r30, r1, PT_R30
swi r31, r1, PT_R31
/* special purpose registers */
mfs r11, rmsr
swi r11, r1, PT_MSR
mfs r11, rear
swi r11, r1, PT_EAR
mfs r11, resr
swi r11, r1, PT_ESR
mfs r11, rfsr
swi r11, r1, PT_FSR
/* reload original stack pointer and save it */
lwi r11, r0, PER_CPU(ENTRY_SP)
swi r11, r1, PT_R1
/* update mode indicator we are in kernel mode */
addik r11, r0, 1
swi r11, r0, PER_CPU(KM)
/* restore r31 */
lwi r31, r0, PER_CPU(CURRENT_SAVE)
/* prepare the link register, the argument and jump */
addik r15, r0, ret_from_intr - 8
addk r6, r0, r15
braid do_IRQ
add r5, r0, r1
ret_from_intr:
lwi r11, r1, PT_MODE
bneid r11, no_intr_resched
3:
lwi r6, r31, TS_THREAD_INFO /* get thread info */
lwi r19, r6, TI_FLAGS /* get flags in thread info */
/* do an extra work if any bits are set */
andi r11, r19, _TIF_NEED_RESCHED
beqi r11, 1f
bralid r15, schedule
nop
bri 3b
1: andi r11, r19, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
beqid r11, no_intr_resched
addk r5, r1, r0
bralid r15, do_notify_resume
addk r6, r0, r0
bri 3b
no_intr_resched:
/* Disable interrupts, we are now committed to the state restore */
disable_irq
/* save mode indicator */
lwi r11, r1, PT_MODE
swi r11, r0, PER_CPU(KM)
/* save r31 */
swi r31, r0, PER_CPU(CURRENT_SAVE)
restore_context:
/* special purpose registers */
lwi r11, r1, PT_FSR
mts rfsr, r11
lwi r11, r1, PT_ESR
mts resr, r11
lwi r11, r1, PT_EAR
mts rear, r11
lwi r11, r1, PT_MSR
mts rmsr, r11
lwi r31, r1, PT_R31
lwi r30, r1, PT_R30
lwi r29, r1, PT_R29
lwi r28, r1, PT_R28
lwi r27, r1, PT_R27
lwi r26, r1, PT_R26
lwi r25, r1, PT_R25
lwi r24, r1, PT_R24
lwi r23, r1, PT_R23
lwi r22, r1, PT_R22
lwi r21, r1, PT_R21
lwi r20, r1, PT_R20
lwi r19, r1, PT_R19
lwi r18, r1, PT_R18
lwi r17, r1, PT_R17
lwi r16, r1, PT_R16
lwi r15, r1, PT_R15
lwi r14, r1, PT_PC
lwi r13, r1, PT_R13
lwi r12, r1, PT_R12
lwi r11, r1, PT_R11
lwi r10, r1, PT_R10
lwi r9, r1, PT_R9
lwi r8, r1, PT_R8
lwi r7, r1, PT_R7
lwi r6, r1, PT_R6
lwi r5, r1, PT_R5
lwi r4, r1, PT_R4
lwi r3, r1, PT_R3
lwi r2, r1, PT_R2
lwi r1, r1, PT_R1
rtid r14, 0
nop
ENTRY(_reset)
brai 0;
ENTRY(_user_exception)
swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
lwi r11, r0, PER_CPU(KM) /* load mode indicator */
beqid r11, 1f /* Already in kernel mode? */
nop
brid 2f /* jump over */
addik r1, r1, (-PT_SIZE) /* Room for pt_regs (delay slot) */
1: /* Switch to kernel stack */
lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
lwi r1, r1, TS_THREAD_INFO /* get the thread info */
/* calculate kernel stack pointer */
addik r1, r1, THREAD_SIZE - PT_SIZE
2:
swi r11, r1, PT_MODE /* store the mode */
lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
/* save them on stack */
swi r2, r1, PT_R2
swi r3, r1, PT_R3 /* r3: _always_ in clobber list; see unistd.h */
swi r4, r1, PT_R4 /* r4: _always_ in clobber list; see unistd.h */
swi r5, r1, PT_R5
swi r6, r1, PT_R6
swi r7, r1, PT_R7
swi r8, r1, PT_R8
swi r9, r1, PT_R9
swi r10, r1, PT_R10
swi r11, r1, PT_R11
/* r12: _always_ in clobber list; see unistd.h */
swi r12, r1, PT_R12
swi r13, r1, PT_R13
/* r14: _always_ in clobber list; see unistd.h */
swi r14, r1, PT_R14
/* but we want to return to the next inst. */
addik r14, r14, 0x4
swi r14, r1, PT_PC /* increment by 4 and store in pc */
swi r15, r1, PT_R15
swi r16, r1, PT_R16
swi r17, r1, PT_R17
swi r18, r1, PT_R18
swi r19, r1, PT_R19
swi r20, r1, PT_R20
swi r21, r1, PT_R21
swi r22, r1, PT_R22
swi r23, r1, PT_R23
swi r24, r1, PT_R24
swi r25, r1, PT_R25
swi r26, r1, PT_R26
swi r27, r1, PT_R27
swi r28, r1, PT_R28
swi r29, r1, PT_R29
swi r30, r1, PT_R30
swi r31, r1, PT_R31
disable_irq
nop /* make sure IE bit is in effect */
clear_bip /* once IE is in effect it is safe to clear BIP */
nop
/* special purpose registers */
mfs r11, rmsr
swi r11, r1, PT_MSR
mfs r11, rear
swi r11, r1, PT_EAR
mfs r11, resr
swi r11, r1, PT_ESR
mfs r11, rfsr
swi r11, r1, PT_FSR
/* reload original stack pointer and save it */
lwi r11, r0, PER_CPU(ENTRY_SP)
swi r11, r1, PT_R1
/* update mode indicator we are in kernel mode */
addik r11, r0, 1
swi r11, r0, PER_CPU(KM)
/* restore r31 */
lwi r31, r0, PER_CPU(CURRENT_SAVE)
/* re-enable interrupts now we are in kernel mode */
enable_irq
/* See if the system call number is valid. */
addi r11, r12, -__NR_syscalls
bgei r11, 1f /* return to user if not valid */
/* Figure out which function to use for this system call. */
/* Note Microblaze barrel shift is optional, so don't rely on it */
add r12, r12, r12 /* convert num -> ptr */
addik r30, r0, 1 /* restarts allowed */
add r12, r12, r12
lwi r12, r12, sys_call_table /* Get function pointer */
addik r15, r0, ret_to_user-8 /* set return address */
bra r12 /* Make the system call. */
bri 0 /* won't reach here */
1:
brid ret_to_user /* jump to syscall epilogue */
addi r3, r0, -ENOSYS /* set errno in delay slot */
/*
* Debug traps are like a system call, but entered via brki r14, 0x60
* All we need to do is send the SIGTRAP signal to current, ptrace and
* do_notify_resume will handle the rest
*/
ENTRY(_debug_exception)
swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
lwi r1, r1, TS_THREAD_INFO /* get the thread info */
addik r1, r1, THREAD_SIZE - PT_SIZE /* get the kernel stack */
swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
lwi r11, r0, PER_CPU(KM) /* load mode indicator */
//save_context:
swi r11, r1, PT_MODE /* store the mode */
lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
/* save them on stack */
swi r2, r1, PT_R2
swi r3, r1, PT_R3 /* r3: _always_ in clobber list; see unistd.h */
swi r4, r1, PT_R4 /* r4: _always_ in clobber list; see unistd.h */
swi r5, r1, PT_R5
swi r6, r1, PT_R6
swi r7, r1, PT_R7
swi r8, r1, PT_R8
swi r9, r1, PT_R9
swi r10, r1, PT_R10
swi r11, r1, PT_R11
/* r12: _always_ in clobber list; see unistd.h */
swi r12, r1, PT_R12
swi r13, r1, PT_R13
/* r14: _always_ in clobber list; see unistd.h */
swi r14, r1, PT_R14
swi r14, r1, PT_PC /* Will return to interrupted instruction */
swi r15, r1, PT_R15
swi r16, r1, PT_R16
swi r17, r1, PT_R17
swi r18, r1, PT_R18
swi r19, r1, PT_R19
swi r20, r1, PT_R20
swi r21, r1, PT_R21
swi r22, r1, PT_R22
swi r23, r1, PT_R23
swi r24, r1, PT_R24
swi r25, r1, PT_R25
swi r26, r1, PT_R26
swi r27, r1, PT_R27
swi r28, r1, PT_R28
swi r29, r1, PT_R29
swi r30, r1, PT_R30
swi r31, r1, PT_R31
disable_irq
nop /* make sure IE bit is in effect */
clear_bip /* once IE is in effect it is safe to clear BIP */
nop
/* special purpose registers */
mfs r11, rmsr
swi r11, r1, PT_MSR
mfs r11, rear
swi r11, r1, PT_EAR
mfs r11, resr
swi r11, r1, PT_ESR
mfs r11, rfsr
swi r11, r1, PT_FSR
/* reload original stack pointer and save it */
lwi r11, r0, PER_CPU(ENTRY_SP)
swi r11, r1, PT_R1
/* update mode indicator we are in kernel mode */
addik r11, r0, 1
swi r11, r0, PER_CPU(KM)
/* restore r31 */
lwi r31, r0, PER_CPU(CURRENT_SAVE)
/* re-enable interrupts now we are in kernel mode */
enable_irq
addi r5, r0, SIGTRAP /* sending the trap signal */
add r6, r0, r31 /* to current */
bralid r15, send_sig
add r7, r0, r0 /* 3rd param zero */
addik r30, r0, 1 /* restarts allowed ??? */
/* Restore r3/r4 to work around how ret_to_user works */
lwi r3, r1, PT_R3
lwi r4, r1, PT_R4
bri ret_to_user
ENTRY(_break)
bri 0
/* struct task_struct *_switch_to(struct thread_info *prev,
struct thread_info *next); */
ENTRY(_switch_to)
/* prepare return value */
addk r3, r0, r31
/* save registers in cpu_context */
/* use r11 and r12, volatile registers, as temp register */
addik r11, r5, TI_CPU_CONTEXT
swi r1, r11, CC_R1
swi r2, r11, CC_R2
/* skip volatile registers.
* they are saved on stack when we jumped to _switch_to() */
/* dedicated registers */
swi r13, r11, CC_R13
swi r14, r11, CC_R14
swi r15, r11, CC_R15
swi r16, r11, CC_R16
swi r17, r11, CC_R17
swi r18, r11, CC_R18
/* save non-volatile registers */
swi r19, r11, CC_R19
swi r20, r11, CC_R20
swi r21, r11, CC_R21
swi r22, r11, CC_R22
swi r23, r11, CC_R23
swi r24, r11, CC_R24
swi r25, r11, CC_R25
swi r26, r11, CC_R26
swi r27, r11, CC_R27
swi r28, r11, CC_R28
swi r29, r11, CC_R29
swi r30, r11, CC_R30
/* special purpose registers */
mfs r12, rmsr
swi r12, r11, CC_MSR
mfs r12, rear
swi r12, r11, CC_EAR
mfs r12, resr
swi r12, r11, CC_ESR
mfs r12, rfsr
swi r12, r11, CC_FSR
/* update r31, the current */
lwi r31, r6, TI_TASK
swi r31, r0, PER_CPU(CURRENT_SAVE)
/* get new process' cpu context and restore */
addik r11, r6, TI_CPU_CONTEXT
/* special purpose registers */
lwi r12, r11, CC_FSR
mts rfsr, r12
lwi r12, r11, CC_ESR
mts resr, r12
lwi r12, r11, CC_EAR
mts rear, r12
lwi r12, r11, CC_MSR
mts rmsr, r12
/* non-volatile registers */
lwi r30, r11, CC_R30
lwi r29, r11, CC_R29
lwi r28, r11, CC_R28
lwi r27, r11, CC_R27
lwi r26, r11, CC_R26
lwi r25, r11, CC_R25
lwi r24, r11, CC_R24
lwi r23, r11, CC_R23
lwi r22, r11, CC_R22
lwi r21, r11, CC_R21
lwi r20, r11, CC_R20
lwi r19, r11, CC_R19
/* dedicated registers */
lwi r18, r11, CC_R18
lwi r17, r11, CC_R17
lwi r16, r11, CC_R16
lwi r15, r11, CC_R15
lwi r14, r11, CC_R14
lwi r13, r11, CC_R13
/* skip volatile registers */
lwi r2, r11, CC_R2
lwi r1, r11, CC_R1
rtsd r15, 8
nop
ENTRY(ret_from_fork)
addk r5, r0, r3
brlid r15, schedule_tail
nop
swi r31, r1, PT_R31 /* save r31 in user context. */
/* will soon be restored to r31 in ret_to_user */
addk r3, r0, r0
brid ret_to_user
nop
ENTRY(ret_from_kernel_thread)
brlid r15, schedule_tail
addk r5, r0, r3
brald r15, r20
addk r5, r0, r19
brid ret_to_user
addk r3, r0, r0
work_pending:
lwi r11, r1, PT_MODE
bneid r11, 2f
3:
enable_irq
andi r11, r19, _TIF_NEED_RESCHED
beqi r11, 1f
bralid r15, schedule
nop
bri 4f
1: andi r11, r19, _TIF_SIGPENDING | _TIF_NOTIFY_RESUME
beqi r11, no_work_pending
addk r5, r30, r0
bralid r15, do_notify_resume
addik r6, r0, 1
addk r30, r0, r0 /* no restarts from now on */
4:
disable_irq
lwi r6, r31, TS_THREAD_INFO /* get thread info */
lwi r19, r6, TI_FLAGS /* get flags in thread info */
bri 3b
ENTRY(ret_to_user)
disable_irq
swi r4, r1, PT_R4 /* return val */
swi r3, r1, PT_R3 /* return val */
lwi r6, r31, TS_THREAD_INFO /* get thread info */
lwi r19, r6, TI_FLAGS /* get flags in thread info */
bnei r19, work_pending /* do an extra work if any bits are set */
no_work_pending:
disable_irq
2:
/* save r31 */
swi r31, r0, PER_CPU(CURRENT_SAVE)
/* save mode indicator */
lwi r18, r1, PT_MODE
swi r18, r0, PER_CPU(KM)
//restore_context:
/* special purpose registers */
lwi r18, r1, PT_FSR
mts rfsr, r18
lwi r18, r1, PT_ESR
mts resr, r18
lwi r18, r1, PT_EAR
mts rear, r18
lwi r18, r1, PT_MSR
mts rmsr, r18
lwi r31, r1, PT_R31
lwi r30, r1, PT_R30
lwi r29, r1, PT_R29
lwi r28, r1, PT_R28
lwi r27, r1, PT_R27
lwi r26, r1, PT_R26
lwi r25, r1, PT_R25
lwi r24, r1, PT_R24
lwi r23, r1, PT_R23
lwi r22, r1, PT_R22
lwi r21, r1, PT_R21
lwi r20, r1, PT_R20
lwi r19, r1, PT_R19
lwi r18, r1, PT_R18
lwi r17, r1, PT_R17
lwi r16, r1, PT_R16
lwi r15, r1, PT_R15
lwi r14, r1, PT_PC
lwi r13, r1, PT_R13
lwi r12, r1, PT_R12
lwi r11, r1, PT_R11
lwi r10, r1, PT_R10
lwi r9, r1, PT_R9
lwi r8, r1, PT_R8
lwi r7, r1, PT_R7
lwi r6, r1, PT_R6
lwi r5, r1, PT_R5
lwi r4, r1, PT_R4 /* return val */
lwi r3, r1, PT_R3 /* return val */
lwi r2, r1, PT_R2
lwi r1, r1, PT_R1
rtid r14, 0
nop
sys_rt_sigreturn_wrapper:
addk r30, r0, r0 /* no restarts for this one */
brid sys_rt_sigreturn
addk r5, r1, r0
/* Interrupt vector table */
.section .init.ivt, "ax"
.org 0x0
brai _reset
brai _user_exception
brai _interrupt
brai _break
brai _hw_exception_handler
.org 0x60
brai _debug_exception
.section .rodata,"a"
#include "syscall_table.S"
syscall_table_size=(.-sys_call_table)
type_SYSCALL:
.ascii "SYSCALL\0"
type_IRQ:
.ascii "IRQ\0"
type_IRQ_PREEMPT:
.ascii "IRQ (PREEMPTED)\0"
type_SYSCALL_PREEMPT:
.ascii " SYSCALL (PREEMPTED)\0"
/*
* Trap decoding for stack unwinder
* Tuples are (start addr, end addr, string)
* If return address lies on [start addr, end addr],
* unwinder displays 'string'
*/
.align 4
.global microblaze_trap_handlers
microblaze_trap_handlers:
/* Exact matches come first */
.word ret_to_user ; .word ret_to_user ; .word type_SYSCALL
.word ret_from_intr; .word ret_from_intr ; .word type_IRQ
/* Fuzzy matches go here */
.word ret_from_intr; .word no_intr_resched; .word type_IRQ_PREEMPT
.word work_pending ; .word no_work_pending; .word type_SYSCALL_PREEMPT
/* End of table */
.word 0 ; .word 0 ; .word 0

5
arch/microblaze/kernel/exceptions.c
View File

@ -69,9 +69,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
int fsr, int addr)
{
#ifdef CONFIG_MMU
addr = regs->pc;
#endif
#if 0
pr_warn("Exception %02x in %s mode, FSR=%08x PC=%08x ESR=%08x\n",
@ -132,13 +130,10 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type,
fsr = FPE_FLTRES;
_exception(SIGFPE, regs, fsr, addr);
break;
#ifdef CONFIG_MMU
case MICROBLAZE_PRIVILEGED_EXCEPTION:
pr_debug("Privileged exception\n");
_exception(SIGILL, regs, ILL_PRVOPC, addr);
break;
#endif
default:
/* FIXME what to do in unexpected exception */
pr_warn("Unexpected exception %02x PC=%08x in %s mode\n",

12
arch/microblaze/kernel/head.S
View File

@ -34,7 +34,6 @@
#include <asm/page.h>
#include <linux/of_fdt.h> /* for OF_DT_HEADER */
#ifdef CONFIG_MMU
#include <asm/setup.h> /* COMMAND_LINE_SIZE */
#include <asm/mmu.h>
#include <asm/processor.h>
@ -48,8 +47,6 @@ empty_zero_page:
swapper_pg_dir:
.space PAGE_SIZE
#endif /* CONFIG_MMU */
.section .rodata
.align 4
endian_check:
@ -108,8 +105,6 @@ _copy_fdt:
addik r3, r3, -4 /* descrement loop */
no_fdt_arg:
#ifdef CONFIG_MMU
#ifndef CONFIG_CMDLINE_BOOL
/*
* handling command line
@ -329,7 +324,6 @@ turn_on_mmu:
nop
start_here:
#endif /* CONFIG_MMU */
/* Initialize small data anchors */
addik r13, r0, _KERNEL_SDA_BASE_
@ -345,11 +339,6 @@ start_here:
brald r15, r11
nop
#ifndef CONFIG_MMU
addik r15, r0, machine_halt
braid start_kernel
nop
#else
/*
* Initialize the MMU.
*/
@ -383,4 +372,3 @@ kernel_load_context:
nop
rted r17, 0 /* enable MMU and jump to start_kernel */
nop
#endif /* CONFIG_MMU */

130
arch/microblaze/kernel/hw_exception_handler.S
View File

@ -80,7 +80,6 @@
/* Helpful Macros */
#define NUM_TO_REG(num) r ## num
#ifdef CONFIG_MMU
#define RESTORE_STATE \
lwi r5, r1, 0; \
mts rmsr, r5; \
@ -92,7 +91,6 @@
lwi r11, r1, PT_R11; \
lwi r31, r1, PT_R31; \
lwi r1, r1, PT_R1;
#endif /* CONFIG_MMU */
#define LWREG_NOP \
bri ex_handler_unhandled; \
@ -102,10 +100,6 @@
bri ex_handler_unhandled; \
nop;
/* FIXME this is weird - for noMMU kernel is not possible to use brid
* instruction which can shorten executed time
*/
/* r3 is the source */
#define R3_TO_LWREG_V(regnum) \
swi r3, r1, 4 * regnum; \
@ -126,7 +120,6 @@
or r3, r0, NUM_TO_REG (regnum); \
bri ex_sw_tail;
#ifdef CONFIG_MMU
#define R3_TO_LWREG_VM_V(regnum) \
brid ex_lw_end_vm; \
swi r3, r7, 4 * regnum;
@ -193,7 +186,6 @@
.endm
#endif
#endif /* CONFIG_MMU */
.extern other_exception_handler /* Defined in exception.c */
@ -251,7 +243,6 @@
*/
/* wrappers to restore state before coming to entry.S */
#ifdef CONFIG_MMU
.section .data
.align 4
pt_pool_space:
@ -316,31 +307,24 @@ _MB_HW_ExceptionVectorTable:
.long TOPHYS(ex_handler_unhandled)
.long TOPHYS(ex_handler_unhandled)
.long TOPHYS(ex_handler_unhandled)
#endif
.global _hw_exception_handler
.section .text
.align 4
.ent _hw_exception_handler
_hw_exception_handler:
#ifndef CONFIG_MMU
addik r1, r1, -(EX_HANDLER_STACK_SIZ); /* Create stack frame */
#else
swi r1, r0, TOPHYS(pt_pool_space + PT_R1); /* GET_SP */
/* Save date to kernel memory. Here is the problem
* when you came from user space */
ori r1, r0, TOPHYS(pt_pool_space);
#endif
swi r3, r1, PT_R3
swi r4, r1, PT_R4
swi r5, r1, PT_R5
swi r6, r1, PT_R6
#ifdef CONFIG_MMU
swi r11, r1, PT_R11
swi r31, r1, PT_R31
lwi r31, r0, TOPHYS(PER_CPU(CURRENT_SAVE)) /* get saved current */
#endif
mfs r5, rmsr;
nop
@ -350,18 +334,8 @@ _hw_exception_handler:
mfs r3, rear;
nop
#ifndef CONFIG_MMU
andi r5, r4, 0x1000; /* Check ESR[DS] */
beqi r5, not_in_delay_slot; /* Branch if ESR[DS] not set */
mfs r17, rbtr; /* ESR[DS] set - return address in BTR */
nop
not_in_delay_slot:
swi r17, r1, PT_R17
#endif
andi r5, r4, 0x1F; /* Extract ESR[EXC] */
#ifdef CONFIG_MMU
/* Calculate exception vector offset = r5 << 2 */
addk r6, r5, r5; /* << 1 */
addk r6, r6, r6; /* << 2 */
@ -383,73 +357,6 @@ not_in_delay_slot:
full_exception_trapw:
RESTORE_STATE
bri full_exception_trap
#else
/* Exceptions enabled here. This will allow nested exceptions */
mfs r6, rmsr;
nop
swi r6, r1, 0; /* RMSR_OFFSET */
ori r6, r6, 0x100; /* Turn ON the EE bit */
andi r6, r6, ~2; /* Disable interrupts */
mts rmsr, r6;
nop
xori r6, r5, 1; /* 00001 = Unaligned Exception */
/* Jump to unalignment exception handler */
beqi r6, handle_unaligned_ex;
handle_other_ex: /* Handle Other exceptions here */
/* Save other volatiles before we make procedure calls below */
swi r7, r1, PT_R7
swi r8, r1, PT_R8
swi r9, r1, PT_R9
swi r10, r1, PT_R10
swi r11, r1, PT_R11
swi r12, r1, PT_R12
swi r14, r1, PT_R14
swi r15, r1, PT_R15
swi r18, r1, PT_R18
or r5, r1, r0
andi r6, r4, 0x1F; /* Load ESR[EC] */
lwi r7, r0, PER_CPU(KM) /* MS: saving current kernel mode to regs */
swi r7, r1, PT_MODE
mfs r7, rfsr
nop
addk r8, r17, r0; /* Load exception address */
bralid r15, full_exception; /* Branch to the handler */
nop;
mts rfsr, r0; /* Clear sticky fsr */
nop
/*
* Trigger execution of the signal handler by enabling
* interrupts and calling an invalid syscall.
*/
mfs r5, rmsr;
nop
ori r5, r5, 2;
mts rmsr, r5; /* enable interrupt */
nop
addi r12, r0, __NR_syscalls;
brki r14, 0x08;
mfs r5, rmsr; /* disable interrupt */
nop
andi r5, r5, ~2;
mts rmsr, r5;
nop
lwi r7, r1, PT_R7
lwi r8, r1, PT_R8
lwi r9, r1, PT_R9
lwi r10, r1, PT_R10
lwi r11, r1, PT_R11
lwi r12, r1, PT_R12
lwi r14, r1, PT_R14
lwi r15, r1, PT_R15
lwi r18, r1, PT_R18
bri ex_handler_done; /* Complete exception handling */
#endif
/* 0x01 - Unaligned data access exception
* This occurs when a word access is not aligned on a word boundary,
@ -463,7 +370,6 @@ handle_unaligned_ex:
* R4 = ESR
* R3 = EAR
*/
#ifdef CONFIG_MMU
andi r6, r4, 0x1000 /* Check ESR[DS] */
beqi r6, _no_delayslot /* Branch if ESR[DS] not set */
mfs r17, rbtr; /* ESR[DS] set - return address in BTR */
@ -472,7 +378,7 @@ _no_delayslot:
/* jump to high level unaligned handler */
RESTORE_STATE;
bri unaligned_data_trap
#endif
andi r6, r4, 0x3E0; /* Mask and extract the register operand */
srl r6, r6; /* r6 >> 5 */
srl r6, r6;
@ -558,25 +464,10 @@ ex_shw:
ex_sw_end: /* Exception handling of store word, ends. */
ex_handler_done:
#ifndef CONFIG_MMU
lwi r5, r1, 0 /* RMSR */
mts rmsr, r5
nop
lwi r3, r1, PT_R3
lwi r4, r1, PT_R4
lwi r5, r1, PT_R5
lwi r6, r1, PT_R6
lwi r17, r1, PT_R17
rted r17, 0
addik r1, r1, (EX_HANDLER_STACK_SIZ); /* Restore stack frame */
#else
RESTORE_STATE;
rted r17, 0
nop
#endif
#ifdef CONFIG_MMU
/* Exception vector entry code. This code runs with address translation
* turned off (i.e. using physical addresses). */
@ -882,13 +773,7 @@ ex_handler_done:
* bits 20 and 21 are zero.
*/
andi r3, r3, PAGE_MASK
#ifdef CONFIG_MICROBLAZE_64K_PAGES
ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_64K)
#elif CONFIG_MICROBLAZE_16K_PAGES
ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_16K)
#else
ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_4K)
#endif
mts rtlbhi, r3 /* Load TLB HI */
nop
@ -926,10 +811,8 @@ ex_handler_done:
rtsd r15,8
nop
#endif
.end _hw_exception_handler
#ifdef CONFIG_MMU
/* Unaligned data access exception last on a 4k page for MMU.
* When this is called, we are in virtual mode with exceptions enabled
* and registers 1-13,15,17,18 saved.
@ -1044,7 +927,6 @@ ex_unaligned_fixup:
.word store6,ex_unaligned_fixup;
.previous;
.end _unaligned_data_exception
#endif /* CONFIG_MMU */
.global ex_handler_unhandled
ex_handler_unhandled:
@ -1093,11 +975,7 @@ lw_r27: R3_TO_LWREG (27);
lw_r28: R3_TO_LWREG (28);
lw_r29: R3_TO_LWREG (29);
lw_r30: R3_TO_LWREG (30);
#ifdef CONFIG_MMU
lw_r31: R3_TO_LWREG_V (31);
#else
lw_r31: R3_TO_LWREG (31);
#endif
sw_table:
sw_r0: SWREG_TO_R3 (0);
@ -1131,13 +1009,8 @@ sw_r27: SWREG_TO_R3 (27);
sw_r28: SWREG_TO_R3 (28);
sw_r29: SWREG_TO_R3 (29);
sw_r30: SWREG_TO_R3 (30);
#ifdef CONFIG_MMU
sw_r31: SWREG_TO_R3_V (31);
#else
sw_r31: SWREG_TO_R3 (31);
#endif
#ifdef CONFIG_MMU
lw_table_vm:
lw_r0_vm: R3_TO_LWREG_VM (0);
lw_r1_vm: R3_TO_LWREG_VM_V (1);
@ -1205,7 +1078,6 @@ sw_r28_vm: SWREG_TO_R3_VM_V (28);
sw_r29_vm: SWREG_TO_R3_VM_V (29);
sw_r30_vm: SWREG_TO_R3_VM_V (30);
sw_r31_vm: SWREG_TO_R3_VM_V (31);
#endif /* CONFIG_MMU */
/* Temporary data structures used in the handler */
.section .data

2
arch/microblaze/kernel/microblaze_ksyms.c
View File

@ -33,9 +33,7 @@ EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove);
#endif
#ifdef CONFIG_MMU
EXPORT_SYMBOL(empty_zero_page);
#endif
EXPORT_SYMBOL(mbc);

10
arch/microblaze/kernel/process.c
View File

@ -69,9 +69,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg,
ti->cpu_context.r19 = (unsigned long)arg;
childregs->pt_mode = 1;
local_save_flags(childregs->msr);
#ifdef CONFIG_MMU
ti->cpu_context.msr = childregs->msr & ~MSR_IE;
#endif
ti->cpu_context.r15 = (unsigned long)ret_from_kernel_thread - 8;
return 0;
}
@ -81,9 +79,6 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg,
memset(&ti->cpu_context, 0, sizeof(struct cpu_context));
ti->cpu_context.r1 = (unsigned long)childregs;
#ifndef CONFIG_MMU
ti->cpu_context.msr = (unsigned long)childregs->msr;
#else
childregs->msr |= MSR_UMS;
/* we should consider the fact that childregs is a copy of the parent
@ -105,7 +100,6 @@ int copy_thread(unsigned long clone_flags, unsigned long usp, unsigned long arg,
ti->cpu_context.msr = (childregs->msr|MSR_VM);
ti->cpu_context.msr &= ~MSR_UMS; /* switch_to to kernel mode */
ti->cpu_context.msr &= ~MSR_IE;
#endif
ti->cpu_context.r15 = (unsigned long)ret_from_fork - 8;
/*
@ -130,13 +124,10 @@ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp)
regs->pc = pc;
regs->r1 = usp;
regs->pt_mode = 0;
#ifdef CONFIG_MMU
regs->msr |= MSR_UMS;
regs->msr &= ~MSR_VM;
#endif
}
#ifdef CONFIG_MMU
#include <linux/elfcore.h>
/*
* Set up a thread for executing a new program
@ -145,7 +136,6 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpregs)
{
return 0; /* MicroBlaze has no separate FPU registers */
}
#endif /* CONFIG_MMU */
void arch_cpu_idle(void)
{

4
arch/microblaze/kernel/setup.c
View File

@ -9,7 +9,7 @@
*/
#include <linux/init.h>
#include <linux/clk-provider.h>
#include <linux/of_clk.h>
#include <linux/clocksource.h>
#include <linux/string.h>
#include <linux/seq_file.h>
@ -190,12 +190,10 @@ static int microblaze_debugfs_init(void)
}
arch_initcall(microblaze_debugfs_init);
# ifdef CONFIG_MMU
static int __init debugfs_tlb(void)
{
debugfs_create_u32("tlb_skip", S_IRUGO, of_debugfs_root, &tlb_skip);
return 0;
}
device_initcall(debugfs_tlb);
# endif
#endif

10
arch/microblaze/kernel/signal.c
View File

@ -157,10 +157,8 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
struct rt_sigframe __user *frame;
int err = 0, sig = ksig->sig;
unsigned long address = 0;
#ifdef CONFIG_MMU
pmd_t *pmdp;
pte_t *ptep;
#endif
frame = get_sigframe(ksig, regs, sizeof(*frame));
@ -192,7 +190,6 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
regs->r15 = ((unsigned long)frame->tramp)-8;
address = ((unsigned long)frame->tramp);
#ifdef CONFIG_MMU
pmdp = pmd_off(current->mm, address);
preempt_disable();
@ -208,10 +205,6 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
}
pte_unmap(ptep);
preempt_enable();
#else
flush_icache_range(address, address + 8);
flush_dcache_range(address, address + 8);
#endif
if (err)
return -EFAULT;
@ -313,7 +306,8 @@ static void do_signal(struct pt_regs *regs, int in_syscall)
asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall)
{
if (test_thread_flag(TIF_SIGPENDING))
if (test_thread_flag(TIF_SIGPENDING) ||
test_thread_flag(TIF_NOTIFY_SIGNAL))
do_signal(regs, in_syscall);
if (test_thread_flag(TIF_NOTIFY_RESUME))

19
arch/microblaze/kernel/unwind.c
View File

@ -161,22 +161,12 @@ static void microblaze_unwind_inner(struct task_struct *task,
* unwind_trap - Unwind through a system trap, that stored previous state
* on the stack.
*/
#ifdef CONFIG_MMU
static inline void unwind_trap(struct task_struct *task, unsigned long pc,
unsigned long fp, struct stack_trace *trace,
const char *loglvl)
{
/* To be implemented */
}
#else
static inline void unwind_trap(struct task_struct *task, unsigned long pc,
unsigned long fp, struct stack_trace *trace,
const char *loglvl)
{
const struct pt_regs *regs = (const struct pt_regs *) fp;
microblaze_unwind_inner(task, regs->pc, regs->r1, regs->r15, trace, loglvl);
}
#endif
/**
* microblaze_unwind_inner - Unwind the stack from the specified point
@ -215,16 +205,7 @@ static void microblaze_unwind_inner(struct task_struct *task,
* HW exception handler doesn't save all registers,
* so we open-code a special case of unwind_trap()
*/
#ifndef CONFIG_MMU
const struct pt_regs *regs =
(const struct pt_regs *) fp;
#endif
printk("%sHW EXCEPTION\n", loglvl);
#ifndef CONFIG_MMU
microblaze_unwind_inner(task, regs->r17 - 4,
fp + EX_HANDLER_STACK_SIZ,
regs->r15, trace, loglvl);
#endif
return;
}

4
arch/microblaze/mm/Makefile
View File

@ -3,6 +3,4 @@
# Makefile
#
obj-y := consistent.o init.o
obj-$(CONFIG_MMU) += pgtable.o mmu_context.o fault.o
obj-y := consistent.o init.o pgtable.o mmu_context.o fault.o

29
arch/microblaze/mm/consistent.c
View File

@ -21,32 +21,3 @@ void arch_dma_prep_coherent(struct page *page, size_t size)
flush_dcache_range(paddr, paddr + size);
}
#ifndef CONFIG_MMU
/*
* Consistent memory allocators. Used for DMA devices that want to share
* uncached memory with the processor core. My crufty no-MMU approach is
* simple. In the HW platform we can optionally mirror the DDR up above the
* processor cacheable region. So, memory accessed in this mirror region will
* not be cached. It's alloced from the same pool as normal memory, but the
* handle we return is shifted up into the uncached region. This will no doubt
* cause big problems if memory allocated here is not also freed properly. -- JW
*
* I have to use dcache values because I can't relate on ram size:
*/
#ifdef CONFIG_XILINX_UNCACHED_SHADOW
#define UNCACHED_SHADOW_MASK (cpuinfo.dcache_high - cpuinfo.dcache_base + 1)
#else
#define UNCACHED_SHADOW_MASK 0
#endif /* CONFIG_XILINX_UNCACHED_SHADOW */
void *arch_dma_set_uncached(void *ptr, size_t size)
{
unsigned long addr = (unsigned long)ptr;
addr |= UNCACHED_SHADOW_MASK;
if (addr > cpuinfo.dcache_base && addr < cpuinfo.dcache_high)
pr_warn("ERROR: Your cache coherent area is CACHED!!!\n");
return (void *)addr;
}
#endif /* CONFIG_MMU */

49
arch/microblaze/mm/init.c
View File

@ -29,11 +29,6 @@
/* Use for MMU and noMMU because of PCI generic code */
int mem_init_done;
#ifndef CONFIG_MMU
unsigned int __page_offset;
EXPORT_SYMBOL(__page_offset);
#endif /* CONFIG_MMU */
char *klimit = _end;
/*
@ -77,13 +72,11 @@ static void highmem_setup(void)
static void __init paging_init(void)
{
unsigned long zones_size[MAX_NR_ZONES];
#ifdef CONFIG_MMU
int idx;
/* Setup fixmaps */
for (idx = 0; idx < __end_of_fixed_addresses; idx++)
clear_fixmap(idx);
#endif
/* Clean every zones */
memset(zones_size, 0, sizeof(zones_size));
@ -103,40 +96,6 @@ static void __init paging_init(void)
void __init setup_memory(void)
{
#ifndef CONFIG_MMU
u32 kernel_align_start, kernel_align_size;
phys_addr_t start, end;
u64 i;
/* Find main memory where is the kernel */
for_each_mem_range(i, &start, &end) {
memory_start = start;
lowmem_size = end - start;
if ((memory_start <= (u32)_text) &&
((u32)_text <= (memory_start + lowmem_size - 1))) {
memory_size = lowmem_size;
PAGE_OFFSET = memory_start;
pr_info("%s: Main mem: 0x%x, size 0x%08x\n",
__func__, (u32) memory_start,
(u32) memory_size);
break;
}
}
if (!memory_start || !memory_size) {
panic("%s: Missing memory setting 0x%08x, size=0x%08x\n",
__func__, (u32) memory_start, (u32) memory_size);
}
/* reservation of region where is the kernel */
kernel_align_start = PAGE_DOWN((u32)_text);
/* ALIGN can be remove because _end in vmlinux.lds.S is align */
kernel_align_size = PAGE_UP((u32)klimit) - kernel_align_start;
pr_info("%s: kernel addr:0x%08x-0x%08x size=0x%08x\n",
__func__, kernel_align_start, kernel_align_start
+ kernel_align_size, kernel_align_size);
memblock_reserve(kernel_align_start, kernel_align_size);
#endif
/*
* Kernel:
* start: base phys address of kernel - page align
@ -176,12 +135,6 @@ void __init mem_init(void)
mem_init_done = 1;
}
#ifndef CONFIG_MMU
int page_is_ram(unsigned long pfn)
{
return __range_ok(pfn, 0);
}
#else
int page_is_ram(unsigned long pfn)
{
return pfn < max_low_pfn;
@ -325,8 +278,6 @@ void __init *early_get_page(void)
NUMA_NO_NODE);
}
#endif /* CONFIG_MMU */
void * __ref zalloc_maybe_bootmem(size_t size, gfp_t mask)
{
void *p;

2
arch/microblaze/pci/pci-common.c
View File

@ -325,12 +325,10 @@ int pci_mmap_legacy_page_range(struct pci_bus *bus,
* memory, effectively behaving just like /dev/zero
*/
if ((offset + size) > hose->isa_mem_size) {
#ifdef CONFIG_MMU
pr_debug("Process %s (pid:%d) mapped non-existing PCI",
current->comm, current->pid);
pr_debug("legacy memory for 0%04x:%02x\n",
pci_domain_nr(bus), bus->number);
#endif
if (vma->vm_flags & VM_SHARED)
return shmem_zero_setup(vma);
return 0;

15
arch/mips/Kconfig
View File

@ -9,6 +9,8 @@ config MIPS
select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_KEEP_MEMBLOCK if DEBUG_KERNEL
select ARCH_SUPPORTS_UPROBES
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
@ -248,6 +250,7 @@ config ATH79
config BMIPS_GENERIC
bool "Broadcom Generic BMIPS kernel"
select ARCH_HAS_RESET_CONTROLLER
select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
select ARCH_HAS_PHYS_TO_DMA
select BOOT_RAW
@ -486,6 +489,7 @@ config MACH_LOONGSON64
select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_ZBOOT
select SYS_SUPPORTS_RELOCATABLE
select ZONE_DMA32
select NUMA
select SMP
@ -2484,6 +2488,7 @@ config MIPS_CPS
select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
select SYS_SUPPORTS_SMP
select WEAK_ORDERING
select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
help
Select this if you wish to run an SMP kernel across multiple cores
within a MIPS Coherent Processing System. When this option is
@ -2644,7 +2649,7 @@ config WAR_R4600_V1_INDEX_ICACHEOP
# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
# Hit_Invalidate_D and Create_Dirty_Excl_D should only be
# executed if there is no other dcache activity. If the dcache is
# accessed for another instruction immeidately preceding when these
# accessed for another instruction immediately preceding when these
# cache instructions are executing, it is possible that the dcache
# tag match outputs used by these cache instructions will be
# incorrect. These cache instructions should be preceded by at least
@ -2777,7 +2782,8 @@ config RELOCATABLE
depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
CPU_P5600 || CAVIUM_OCTEON_SOC
CPU_P5600 || CAVIUM_OCTEON_SOC || \
CPU_LOONGSON64
help
This builds a kernel image that retains relocation information
so it can be loaded someplace besides the default 1MB.
@ -2788,6 +2794,7 @@ config RELOCATION_TABLE_SIZE
hex "Relocation table size"
depends on RELOCATABLE
range 0x0 0x01000000
default "0x00200000" if CPU_LOONGSON64
default "0x00100000"
help
A table of relocation data will be appended to the kernel binary
@ -3086,7 +3093,7 @@ config MIPS_O32_FP64_SUPPORT
Although binutils currently supports use of this flag the details
concerning its effect upon the O32 ABI in userland are still being
worked on. In order to avoid userland becoming dependant upon current
worked on. In order to avoid userland becoming dependent upon current
behaviour before the details have been finalised, this option should
be considered experimental and only enabled by those working upon
said details.
@ -3124,7 +3131,7 @@ choice
objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
This is meant as a backward compatiblity convenience for those
This is meant as a backward compatibility convenience for those
systems with a bootloader that can't be upgraded to accommodate
the documented boot protocol using a device tree.

3
arch/mips/Makefile
View File

@ -347,6 +347,7 @@ bootz-y += vmlinuz.srec
ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
bootz-y += uzImage.bin
endif
bootz-y += vmlinuz.itb
#
# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
@ -378,7 +379,7 @@ ifdef CONFIG_SYS_SUPPORTS_ZBOOT
# boot/compressed
$(bootz-y): $(vmlinux-32) FORCE
$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
$(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
$(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
else
vmlinuz: FORCE
@echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'

1
arch/mips/ar7/gpio.c
View File

@ -319,6 +319,7 @@ int __init ar7_gpio_init(void)
if (ret) {
printk(KERN_ERR "%s: failed to add gpiochip\n",
gpch->chip.label);
iounmap(gpch->regs);
return ret;
}
printk(KERN_INFO "%s: registered %d GPIOs\n",

2
arch/mips/bcm47xx/Kconfig
View File

@ -9,6 +9,7 @@ config BCM47XX_SSB
select SSB_DRIVER_MIPS
select SSB_DRIVER_EXTIF
select SSB_EMBEDDED
select SSB_PCIHOST if PCI
select SSB_B43_PCI_BRIDGE if PCI
select SSB_DRIVER_PCICORE if PCI
select SSB_PCICORE_HOSTMODE if PCI
@ -27,6 +28,7 @@ config BCM47XX_BCMA
select BCMA
select BCMA_HOST_SOC
select BCMA_DRIVER_MIPS
select BCMA_DRIVER_PCI if PCI
select BCMA_DRIVER_PCI_HOSTMODE if PCI
select BCMA_DRIVER_GPIO
default y

1
arch/mips/boot/.gitignore vendored
View File

@ -2,6 +2,7 @@
mkboot
elf2ecoff
vmlinux.*
vmlinuz.*
zImage
zImage.tmp
calc_vmlinuz_load_addr

97
arch/mips/boot/compressed/Makefile
View File

@ -36,6 +36,7 @@ KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
KCOV_INSTRUMENT := n
GCOV_PROFILE := n
# decompressor objects (linked with vmlinuz)
vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o
@ -65,7 +66,9 @@ $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
targets := $(notdir $(vmlinuzobjs-y))
targets += vmlinux.bin
OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
$(call if_changed,objcopy)
@ -78,12 +81,15 @@ tool_$(CONFIG_KERNEL_XZ) = xzkern
tool_$(CONFIG_KERNEL_ZSTD) = zstd22
targets += vmlinux.bin.z
$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
$(call if_changed,$(tool_y))
targets += piggy.o dummy.o
OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
--set-section-flags=.image=contents,alloc,load,readonly,data
$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
$(call if_changed,objcopy)
@ -102,14 +108,21 @@ UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
vmlinuzobjs-y += $(obj)/piggy.o
targets += ../../../../vmlinuz
quiet_cmd_zld = LD $@
cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
quiet_cmd_strip = STRIP $@
quiet_cmd_strip = STRIP $@
cmd_strip = $(STRIP) -s $@
vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
$(call cmd,zld)
$(call cmd,strip)
objboot := $(objtree)/arch/mips/boot
$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE
#
# Some DECstations need all possible sections of an ECOFF executable
#
@ -121,34 +134,90 @@ endif
hostprogs += ../elf2ecoff
ifdef CONFIG_32BIT
VMLINUZ = vmlinuz
VMLINUZ = $(objtree)/vmlinuz
else
VMLINUZ = vmlinuz.32
VMLINUZ = $(objboot)/vmlinuz.32
endif
targets += ../vmlinuz.32
quiet_cmd_32 = OBJCOPY $@
cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
vmlinuz.32: vmlinuz
$(objboot)/vmlinuz.32: $(objtree)/vmlinuz
$(call cmd,32)
targets += ../vmlinuz.ecoff
quiet_cmd_ecoff = ECOFF $@
cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ)
$(call cmd,ecoff)
targets += ../vmlinuz.bin
OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
vmlinuz.bin: vmlinuz
$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz
$(call cmd,objcopy)
targets += ../vmlinuz.srec
OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
vmlinuz.srec: vmlinuz
$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz
$(call cmd,objcopy)
uzImage.bin: vmlinuz.bin FORCE
targets += ../uzImage.bin
$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE
$(call if_changed,uimage,none)
clean-files += $(objtree)/vmlinuz
clean-files += $(objtree)/vmlinuz.32
clean-files += $(objtree)/vmlinuz.ecoff
clean-files += $(objtree)/vmlinuz.bin
clean-files += $(objtree)/vmlinuz.srec
#
# Flattened Image Tree (.itb) image
#
ifeq ($(ADDR_BITS),32)
itb_addr_cells = 1
endif
ifeq ($(ADDR_BITS),64)
itb_addr_cells = 2
endif
targets += ../vmlinuz.its.S
quiet_cmd_its_cat = CAT $@
cmd_its_cat = cat $(real-prereqs) >$@
$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE
$(call if_changed,its_cat)
targets += ../vmlinuz.its
quiet_cmd_cpp_its_S = ITS $@
cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \
-DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \
-DVMLINUX_BINARY="\"$(2)\"" \
-DVMLINUX_COMPRESSION="\"none\"" \
-DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \
-DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \
-DADDR_BITS=$(ADDR_BITS) \
-DADDR_CELLS=$(itb_addr_cells)
$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE
$(call if_changed,cpp_its_S,vmlinuz.bin)
targets += ../vmlinuz.itb
quiet_cmd_itb-image = ITB $@
cmd_itb-image = \
env PATH="$(objtree)/scripts/dtc:$(PATH)" \
$(BASH) $(MKIMAGE) \
-D "-I dts -O dtb -p 500 \
--include $(objtree)/arch/mips \
--warning no-unit_address_vs_reg" \
-f $(2) $@
$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE
$(call if_changed,itb-image,$<)

9
arch/mips/boot/compressed/ld.script
View File

@ -31,9 +31,12 @@ SECTIONS
CONSTRUCTORS
. = ALIGN(16);
}
__appended_dtb = .;
/* leave space for appended DTB */
. += 0x100000;
.appended_dtb : {
__appended_dtb = .;
/* leave space for appended DTB */
. += 0x100000;
}
_edata = .;
/* End of data section */

2
arch/mips/boot/dts/Makefile
View File

@ -6,7 +6,7 @@ subdir-$(CONFIG_FIT_IMAGE_FDT_BOSTON) += img
subdir-$(CONFIG_MACH_INGENIC) += ingenic
subdir-$(CONFIG_LANTIQ) += lantiq
subdir-$(CONFIG_MACH_LOONGSON64) += loongson
subdir-$(CONFIG_MSCC_OCELOT) += mscc
subdir-$(CONFIG_SOC_VCOREIII) += mscc
subdir-$(CONFIG_MIPS_MALTA) += mti
subdir-$(CONFIG_LEGACY_BOARD_SEAD3) += mti
subdir-$(CONFIG_NLM_XLP_BOARD) += netlogic

6
arch/mips/boot/dts/brcm/bcm63268.dtsi
View File

@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
mask = <0x1>;
};
periph_rst: reset-controller@10000010 {
compatible = "brcm,bcm6345-reset";
reg = <0x10000010 0x4>;
#reset-cells = <1>;
};
periph_intc: interrupt-controller@10000020 {
compatible = "brcm,bcm6345-l1-intc";
reg = <0x10000020 0x20>,

6
arch/mips/boot/dts/brcm/bcm6328.dtsi
View File

@ -57,6 +57,12 @@ clkctl: clock-controller@10000004 {
#clock-cells = <1>;
};
periph_rst: reset-controller@10000010 {
compatible = "brcm,bcm6345-reset";
reg = <0x10000010 0x4>;
#reset-cells = <1>;
};
periph_intc: interrupt-controller@10000020 {
compatible = "brcm,bcm6345-l1-intc";
reg = <0x10000020 0x10>,

6
arch/mips/boot/dts/brcm/bcm6358.dtsi
View File

@ -82,6 +82,12 @@ periph_intc: interrupt-controller@fffe000c {
interrupts = <2>, <3>;
};
periph_rst: reset-controller@fffe0034 {
compatible = "brcm,bcm6345-reset";
reg = <0xfffe0034 0x4>;
#reset-cells = <1>;
};
leds0: led-controller@fffe00d0 {
#address-cells = <1>;
#size-cells = <0>;

6
arch/mips/boot/dts/brcm/bcm6362.dtsi
View File

@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
mask = <0x1>;
};
periph_rst: reset-controller@10000010 {
compatible = "brcm,bcm6345-reset";
reg = <0x10000010 0x4>;
#reset-cells = <1>;
};
periph_intc: interrupt-controller@10000020 {
compatible = "brcm,bcm6345-l1-intc";
reg = <0x10000020 0x10>,

6
arch/mips/boot/dts/brcm/bcm6368.dtsi
View File

@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
mask = <0x1>;
};
periph_rst: reset-controller@10000010 {
compatible = "brcm,bcm6345-reset";
reg = <0x10000010 0x4>;
#reset-cells = <1>;
};
periph_intc: interrupt-controller@10000020 {
compatible = "brcm,bcm6345-l1-intc";
reg = <0x10000020 0x10>,

5
arch/mips/boot/dts/img/pistachio_marduk.dts
View File

@ -46,9 +46,10 @@ internal_dac_supply: internal-dac-supply {
regulator-max-microvolt = <1800000>;
};
leds {
led-controller {
compatible = "pwm-leds";
heartbeat {
led-1 {
label = "marduk:red:heartbeat";
pwms = <&pwm 3 300000>;
max-brightness = <255>;

45
arch/mips/boot/dts/ingenic/ci20.dts
View File

@ -69,9 +69,11 @@ led3 {
eth0_power: fixedregulator@0 {
compatible = "regulator-fixed";
regulator-name = "eth0_power";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpb 25 GPIO_ACTIVE_LOW>;
enable-active-high;
};
@ -83,16 +85,39 @@ ir: ir {
wlan0_power: fixedregulator@1 {
compatible = "regulator-fixed";
regulator-name = "wlan0_power";
gpio = <&gpb 19 GPIO_ACTIVE_LOW>;
enable-active-high;
};
otg_power: fixedregulator@2 {
compatible = "regulator-fixed";
regulator-name = "otg_power";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpf 14 GPIO_ACTIVE_LOW>;
enable-active-high;
};
};
&ext {
clock-frequency = <48000000>;
};
&cgu {
/*
* Use the 32.768 kHz oscillator as the parent of the RTC for a higher
* precision.
*/
assigned-clocks = <&cgu JZ4780_CLK_OTGPHY>, <&cgu JZ4780_CLK_RTC>;
assigned-clock-parents = <0>, <&cgu JZ4780_CLK_RTCLK>;
assigned-clock-rates = <48000000>;
};
&mmc0 {
status = "okay";
@ -396,6 +421,16 @@ &bch {
status = "okay";
};
&otg_phy {
status = "okay";
vcc-supply = <&otg_power>;
};
&otg {
status = "okay";
};
&pinctrl {
pins_uart0: uart0 {
function = "uart0";
@ -489,7 +524,11 @@ pins_mmc1: mmc1 {
};
&tcu {
/* 3 MHz for the system timer and clocksource */
assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>;
assigned-clock-rates = <3000000>, <3000000>;
/*
* 750 kHz for the system timer and 3 MHz for the clocksource,
* use channel #0 for the system timer, #1 for the clocksource.
*/
assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>,
<&tcu TCU_CLK_OST>;
assigned-clock-rates = <750000>, <3000000>, <3000000>;
};

64
arch/mips/boot/dts/ingenic/cu1000-neo.dts
View File

@ -3,7 +3,7 @@
#include "x1000.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/clock/ingenic,tcu.h>
#include <dt-bindings/clock/ingenic,sysost.h>
#include <dt-bindings/interrupt-controller/irq.h>
/ {
@ -31,6 +31,42 @@ led-0 {
};
};
ssi: spi-gpio {
compatible = "spi-gpio";
#address-cells = <1>;
#size-cells = <0>;
num-chipselects = <1>;
mosi-gpios = <&gpd 2 GPIO_ACTIVE_HIGH>;
miso-gpios = <&gpd 3 GPIO_ACTIVE_HIGH>;
sck-gpios = <&gpd 0 GPIO_ACTIVE_HIGH>;
cs-gpios = <&gpd 1 GPIO_ACTIVE_HIGH>;
status = "okay";
spi-max-frequency = <50000000>;
sc16is752: expander@0 {
compatible = "nxp,sc16is752";
reg = <0>; /* CE0 */
spi-max-frequency = <4000000>;
clocks = <&exclk_sc16is752>;
interrupt-parent = <&gpc>;
interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
gpio-controller;
#gpio-cells = <2>;
exclk_sc16is752: sc16is752 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <48000000>;
};
};
};
wlan_pwrseq: msc1-pwrseq {
compatible = "mmc-pwrseq-simple";
@ -43,13 +79,19 @@ &exclk {
clock-frequency = <24000000>;
};
&tcu {
/* 1500 kHz for the system timer and clocksource */
assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER2>;
assigned-clock-rates = <1500000>, <1500000>;
&cgu {
/*
* Use the 32.768 kHz oscillator as the parent of the RTC for a higher
* precision.
*/
assigned-clocks = <&cgu X1000_CLK_RTC>;
assigned-clock-parents = <&cgu X1000_CLK_RTCLK>;
};
/* Use channel #0 for the system timer channel #2 for the clocksource */
ingenic,pwm-channels-mask = <0xfa>;
&ost {
/* 1500 kHz for the system timer and clocksource */
assigned-clocks = <&ost OST_CLK_PERCPU_TIMER>, <&ost OST_CLK_GLOBAL_TIMER>;
assigned-clock-rates = <1500000>, <1500000>;
};
&uart2 {
@ -135,6 +177,14 @@ lan8720a: ethernet-phy@0 {
};
};
&otg_phy {
status = "okay";
};
&otg {
status = "okay";
};
&pinctrl {
pins_uart2: uart2 {
function = "uart2";

68
arch/mips/boot/dts/ingenic/cu1830-neo.dts
View File

@ -3,7 +3,7 @@
#include "x1830.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/clock/ingenic,tcu.h>
#include <dt-bindings/clock/ingenic,sysost.h>
#include <dt-bindings/interrupt-controller/irq.h>
/ {
@ -31,6 +31,42 @@ led-0 {
};
};
ssi0: spi-gpio {
compatible = "spi-gpio";
#address-cells = <1>;
#size-cells = <0>;
num-chipselects = <1>;
mosi-gpios = <&gpc 12 GPIO_ACTIVE_HIGH>;
miso-gpios = <&gpc 11 GPIO_ACTIVE_HIGH>;
sck-gpios = <&gpc 15 GPIO_ACTIVE_HIGH>;
cs-gpios = <&gpc 16 GPIO_ACTIVE_HIGH>;
status = "okay";
spi-max-frequency = <50000000>;
sc16is752: expander@0 {
compatible = "nxp,sc16is752";
reg = <0>; /* CE0 */
spi-max-frequency = <4000000>;
clocks = <&exclk_sc16is752>;
interrupt-parent = <&gpb>;
interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
gpio-controller;
#gpio-cells = <2>;
exclk_sc16is752: sc16is752 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <48000000>;
};
};
};
wlan_pwrseq: msc1-pwrseq {
compatible = "mmc-pwrseq-simple";
@ -43,13 +79,19 @@ &exclk {
clock-frequency = <24000000>;
};
&tcu {
/* 1500 kHz for the system timer and clocksource */
assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER2>;
assigned-clock-rates = <1500000>, <1500000>;
&cgu {
/*
* Use the 32.768 kHz oscillator as the parent of the RTC for a higher
* precision.
*/
assigned-clocks = <&cgu X1830_CLK_RTC>;
assigned-clock-parents = <&cgu X1830_CLK_RTCLK>;
};
/* Use channel #0 for the system timer channel #2 for the clocksource */
ingenic,pwm-channels-mask = <0xfa>;
&ost {
/* 1500 kHz for the system timer and clocksource */
assigned-clocks = <&ost OST_CLK_PERCPU_TIMER>, <&ost OST_CLK_GLOBAL_TIMER>;
assigned-clock-rates = <1500000>, <1500000>;
};
&uart1 {
@ -73,6 +115,10 @@ ads7830: adc@48 {
};
};
&dtrng {
status = "okay";
};
&msc0 {
status = "okay";
@ -135,6 +181,14 @@ ip101gr: ethernet-phy@0 {
};
};
&otg_phy {
status = "okay";
};
&otg {
status = "okay";
};
&pinctrl {
pins_uart1: uart1 {
function = "uart1";

2
arch/mips/boot/dts/ingenic/jz4740.dtsi
View File

@ -295,7 +295,7 @@ dmac: dma-controller@13020000 {
clocks = <&cgu JZ4740_CLK_DMA>;
};
uhc: uhc@13030000 {
uhc: usb@13030000 {
compatible = "ingenic,jz4740-ohci", "generic-ohci";
reg = <0x13030000 0x1000>;

2
arch/mips/boot/dts/ingenic/jz4770.dtsi
View File

@ -430,7 +430,7 @@ dmac1: dma-controller@13420100 {
interrupts = <23>;
};
uhc: uhc@13430000 {
uhc: usb@13430000 {
compatible = "generic-ohci";
reg = <0x13430000 0x1000>;

45
arch/mips/boot/dts/ingenic/jz4780.dtsi
View File

@ -61,13 +61,34 @@ rtc: rtc {
};
cgu: jz4780-cgu@10000000 {
compatible = "ingenic,jz4780-cgu";
compatible = "ingenic,jz4780-cgu", "simple-mfd";
reg = <0x10000000 0x100>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x10000000 0x100>;
#clock-cells = <1>;
clocks = <&ext>, <&rtc>;
clock-names = "ext", "rtc";
#clock-cells = <1>;
otg_phy: usb-phy@3c {
compatible = "ingenic,jz4780-phy";
reg = <0x3c 0x10>;
clocks = <&cgu JZ4780_CLK_OTG1>;
#phy-cells = <0>;
status = "disabled";
};
rng: rng@d8 {
compatible = "ingenic,jz4780-rng";
reg = <0xd8 0x8>;
status = "disabled";
};
};
tcu: timer@10002000 {
@ -494,4 +515,24 @@ bch: bch@134d0000 {
status = "disabled";
};
otg: usb@13500000 {
compatible = "ingenic,jz4780-otg", "snps,dwc2";
reg = <0x13500000 0x40000>;
interrupt-parent = <&intc>;
interrupts = <21>;
clocks = <&cgu JZ4780_CLK_UHC>;
clock-names = "otg";
phys = <&otg_phy>;
phy-names = "usb2-phy";
g-rx-fifo-size = <768>;
g-np-tx-fifo-size = <256>;
g-tx-fifo-size = <256 256 256 256 256 256 256 512>;
status = "disabled";
};
};

56
arch/mips/boot/dts/ingenic/x1000.dtsi
View File

@ -52,13 +52,47 @@ rtclk: rtc {
};
cgu: x1000-cgu@10000000 {
compatible = "ingenic,x1000-cgu";
compatible = "ingenic,x1000-cgu", "simple-mfd";
reg = <0x10000000 0x100>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x10000000 0x100>;
#clock-cells = <1>;
clocks = <&exclk>, <&rtclk>;
clock-names = "ext", "rtc";
otg_phy: usb-phy@3c {
compatible = "ingenic,x1000-phy";
reg = <0x3c 0x10>;
clocks = <&cgu X1000_CLK_OTGPHY>;
#phy-cells = <0>;
status = "disabled";
};
rng: rng@d8 {
compatible = "ingenic,x1000-rng";
reg = <0xd8 0x8>;
status = "disabled";
};
};
ost: timer@12000000 {
compatible = "ingenic,x1000-ost";
reg = <0x12000000 0x3c>;
#clock-cells = <1>;
clocks = <&cgu X1000_CLK_OST>;
clock-names = "ost";
interrupt-parent = <&cpuintc>;
interrupts = <3>;
};
tcu: timer@10002000 {
@ -323,4 +357,24 @@ mdio: mdio {
status = "disabled";
};
};
otg: usb@13500000 {
compatible = "ingenic,x1000-otg", "snps,dwc2";
reg = <0x13500000 0x40000>;
interrupt-parent = <&intc>;
interrupts = <21>;
clocks = <&cgu X1000_CLK_OTG>;
clock-names = "otg";
phys = <&otg_phy>;
phy-names = "usb2-phy";
g-rx-fifo-size = <768>;
g-np-tx-fifo-size = <256>;
g-tx-fifo-size = <256 256 256 256 256 256 256 512>;
status = "disabled";
};
};

58
arch/mips/boot/dts/ingenic/x1830.dtsi
View File

@ -52,13 +52,40 @@ rtclk: rtc {
};
cgu: x1830-cgu@10000000 {
compatible = "ingenic,x1830-cgu";
compatible = "ingenic,x1830-cgu", "simple-mfd";
reg = <0x10000000 0x100>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x0 0x10000000 0x100>;
#clock-cells = <1>;
clocks = <&exclk>, <&rtclk>;
clock-names = "ext", "rtc";
otg_phy: usb-phy@3c {
compatible = "ingenic,x1830-phy";
reg = <0x3c 0x10>;
clocks = <&cgu X1830_CLK_OTGPHY>;
#phy-cells = <0>;
status = "disabled";
};
};
ost: timer@12000000 {
compatible = "ingenic,x1830-ost", "ingenic,x1000-ost";
reg = <0x12000000 0x3c>;
#clock-cells = <1>;
clocks = <&cgu X1830_CLK_OST>;
clock-names = "ost";
interrupt-parent = <&cpuintc>;
interrupts = <4>;
};
tcu: timer@10002000 {
@ -236,6 +263,15 @@ i2c2: i2c-controller@10052000 {
status = "disabled";
};
dtrng: trng@10072000 {
compatible = "ingenic,x1830-dtrng";
reg = <0x10072000 0xc>;
clocks = <&cgu X1830_CLK_DTRNG>;
status = "disabled";
};
pdma: dma-controller@13420000 {
compatible = "ingenic,x1830-dma";
reg = <0x13420000 0x400
@ -311,4 +347,24 @@ mdio: mdio {
status = "disabled";
};
};
otg: usb@13500000 {
compatible = "ingenic,x1830-otg", "snps,dwc2";
reg = <0x13500000 0x40000>;
interrupt-parent = <&intc>;
interrupts = <21>;
clocks = <&cgu X1830_CLK_OTG>;
clock-names = "otg";
phys = <&otg_phy>;
phy-names = "usb2-phy";
g-rx-fifo-size = <768>;
g-np-tx-fifo-size = <256>;
g-tx-fifo-size = <256 256 256 256 256 256 256 512>;
status = "disabled";
};
};

11
arch/mips/boot/dts/mscc/Makefile
View File

@ -1,4 +1,13 @@
# SPDX-License-Identifier: GPL-2.0-only
dtb-$(CONFIG_MSCC_OCELOT) += ocelot_pcb123.dtb ocelot_pcb120.dtb
dtb-$(CONFIG_SOC_VCOREIII) += \
jaguar2_pcb110.dtb \
jaguar2_pcb111.dtb \
jaguar2_pcb118.dtb \
luton_pcb091.dtb \
ocelot_pcb120.dtb \
ocelot_pcb123.dtb \
serval_pcb105.dtb \
serval_pcb106.dtb
obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))

167
arch/mips/boot/dts/mscc/jaguar2.dtsi Normal file
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@ -0,0 +1,167 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2020 Microsemi Corporation
*/
/ {
#address-cells = <1>;
#size-cells = <1>;
compatible = "mscc,jr2";
aliases {
serial0 = &uart0;
serial1 = &uart2;
gpio0 = &gpio;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
compatible = "mips,mips24KEc";
device_type = "cpu";
clocks = <&cpu_clk>;
reg = <0>;
};
};
cpuintc: interrupt-controller {
#address-cells = <0>;
#interrupt-cells = <1>;
interrupt-controller;
compatible = "mti,cpu-interrupt-controller";
};
cpu_clk: cpu-clock {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <500000000>;
};
ahb_clk: ahb-clk {
compatible = "fixed-factor-clock";
#clock-cells = <0>;
clocks = <&cpu_clk>;
clock-div = <2>;
clock-mult = <1>;
};
ahb: ahb {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges;
interrupt-parent = <&intc>;
cpu_ctrl: syscon@70000000 {
compatible = "mscc,ocelot-cpu-syscon", "syscon";
reg = <0x70000000 0x2c>;
};
intc: interrupt-controller@70000070 {
compatible = "mscc,jaguar2-icpu-intr";
reg = <0x70000070 0x94>;
#interrupt-cells = <1>;
interrupt-controller;
interrupt-parent = <&cpuintc>;
interrupts = <2>;
};
uart0: serial@70100000 {
pinctrl-0 = <&uart_pins>;
pinctrl-names = "default";
compatible = "ns16550a";
reg = <0x70100000 0x20>;
interrupts = <6>;
clocks = <&ahb_clk>;
reg-io-width = <4>;
reg-shift = <2>;
status = "disabled";
};
uart2: serial@70100800 {
pinctrl-0 = <&uart2_pins>;
pinctrl-names = "default";
compatible = "ns16550a";
reg = <0x70100800 0x20>;
interrupts = <7>;
clocks = <&ahb_clk>;
reg-io-width = <4>;
reg-shift = <2>;
status = "disabled";
};
gpio: pinctrl@71010038 {
compatible = "mscc,jaguar2-pinctrl";
reg = <0x71010038 0x90>;
gpio-controller;
#gpio-cells = <2>;
gpio-ranges = <&gpio 0 0 64>;
uart_pins: uart-pins {
pins = "GPIO_10", "GPIO_11";
function = "uart";
};
uart2_pins: uart2-pins {
pins = "GPIO_24", "GPIO_25";
function = "uart2";
};
cs1_pins: cs1-pins {
pins = "GPIO_16";
function = "si";
};
cs2_pins: cs2-pins {
pins = "GPIO_17";
function = "si";
};
cs3_pins: cs3-pins {
pins = "GPIO_18";
function = "si";
};
i2c_pins: i2c-pins {
pins = "GPIO_14", "GPIO_15";
function = "twi";
};
i2c2_pins: i2c2-pins {
pins = "GPIO_28", "GPIO_29";
function = "twi2";
};
};
i2c0: i2c@70100400 {
compatible = "mscc,ocelot-i2c", "snps,designware-i2c";
status = "disabled";
pinctrl-0 = <&i2c_pins>;
pinctrl-names = "default";
reg = <0x70100400 0x100>, <0x700001b8 0x8>;
#address-cells = <1>;
#size-cells = <0>;
interrupts = <8>;
clock-frequency = <100000>;
clocks = <&ahb_clk>;
};
i2c2: i2c@70100c00 {
compatible = "mscc,ocelot-i2c", "snps,designware-i2c";
status = "disabled";
pinctrl-0 = <&i2c2_pins>;
pinctrl-names = "default";
reg = <0x70100c00 0x100>;
#address-cells = <1>;
#size-cells = <0>;
interrupts = <8>;
clock-frequency = <100000>;
clocks = <&ahb_clk>;
};
};
};

25
arch/mips/boot/dts/mscc/jaguar2_common.dtsi Normal file
View File

@ -0,0 +1,25 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2020 Microsemi Corporation
*/
#include "jaguar2.dtsi"
/ {
chosen {
stdout-path = "serial0:115200n8";
};
};
&uart0 {
status = "okay";
};
&uart2 {
status = "okay";
};
&i2c0 {
status = "okay";
i2c-sda-hold-time-ns = <300>;
};

267
arch/mips/boot/dts/mscc/jaguar2_pcb110.dts Normal file
View File

@ -0,0 +1,267 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2020 Microsemi Corporation
*/
/dts-v1/;
#include "jaguar2_common.dtsi"
#include <dt-bindings/gpio/gpio.h>
/ {
model = "Jaguar2 Cu8-Sfp16 PCB110 Reference Board";
compatible = "mscc,jr2-pcb110", "mscc,jr2";
aliases {
i2c0 = &i2c0;
i2c108 = &i2c108;
i2c109 = &i2c109;
i2c110 = &i2c110;
i2c111 = &i2c111;
i2c112 = &i2c112;
i2c113 = &i2c113;
i2c114 = &i2c114;
i2c115 = &i2c115;
i2c116 = &i2c116;
i2c117 = &i2c117;
i2c118 = &i2c118;
i2c119 = &i2c119;
i2c120 = &i2c120;
i2c121 = &i2c121;
i2c122 = &i2c122;
i2c123 = &i2c123;
i2c124 = &i2c124;
i2c125 = &i2c125;
i2c126 = &i2c126;
i2c127 = &i2c127;
i2c128 = &i2c128;
i2c129 = &i2c129;
i2c130 = &i2c130;
i2c131 = &i2c131;
i2c149 = &i2c149;
i2c150 = &i2c150;
i2c151 = &i2c151;
i2c152 = &i2c152;
};
i2c0_imux: i2c0-imux {
compatible = "i2c-mux-pinctrl";
#address-cells = <1>;
#size-cells = <0>;
i2c-parent = <&i2c0>;
pinctrl-names =
"i2c149", "i2c150", "i2c151", "i2c152", "idle";
pinctrl-0 = <&i2cmux_0>;
pinctrl-1 = <&i2cmux_1>;
pinctrl-2 = <&i2cmux_2>;
pinctrl-3 = <&i2cmux_3>;
pinctrl-4 = <&i2cmux_pins_i>;
i2c149: i2c@0 {
reg = <0x0>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c150: i2c@1 {
reg = <0x1>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c151: i2c@2 {
reg = <0x2>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c152: i2c@3 {
reg = <0x3>;
#address-cells = <1>;
#size-cells = <0>;
};
};
i2c0_emux: i2c0-emux {
compatible = "i2c-mux-gpio";
#address-cells = <1>;
#size-cells = <0>;
i2c-parent = <&i2c0>;
mux-gpios = <&gpio 51 GPIO_ACTIVE_HIGH
&gpio 52 GPIO_ACTIVE_HIGH
&gpio 53 GPIO_ACTIVE_HIGH
&gpio 58 GPIO_ACTIVE_HIGH
&gpio 59 GPIO_ACTIVE_HIGH>;
idle-state = <0x0>;
i2c108: i2c@10 {
reg = <0x10>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c109: i2c@11 {
reg = <0x11>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c110: i2c@12 {
reg = <0x12>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c111: i2c@13 {
reg = <0x13>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c112: i2c@14 {
reg = <0x14>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c113: i2c@15 {
reg = <0x15>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c114: i2c@16 {
reg = <0x16>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c115: i2c@17 {
reg = <0x17>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c116: i2c@8 {
reg = <0x8>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c117: i2c@9 {
reg = <0x9>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c118: i2c@a {
reg = <0xa>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c119: i2c@b {
reg = <0xb>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c120: i2c@c {
reg = <0xc>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c121: i2c@d {
reg = <0xd>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c122: i2c@e {
reg = <0xe>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c123: i2c@f {
reg = <0xf>;
#address-cells = <1>;
#size-cells = <0>;
};
};
};
&gpio {
synce_pins: synce-pins {
// GPIO 16 == SI_nCS1
pins = "GPIO_16";
function = "si";
};
synce_builtin_pins: synce-builtin-pins {
// GPIO 49 == SI_nCS13
pins = "GPIO_49";
function = "si";
};
i2cmux_pins_i: i2cmux-pins-i {
pins = "GPIO_17", "GPIO_18", "GPIO_20", "GPIO_21";
function = "twi_scl_m";
output-low;
};
i2cmux_0: i2cmux-0 {
pins = "GPIO_17";
function = "twi_scl_m";
output-high;
};
i2cmux_1: i2cmux-1 {
pins = "GPIO_18";
function = "twi_scl_m";
output-high;
};
i2cmux_2: i2cmux-2 {
pins = "GPIO_20";
function = "twi_scl_m";
output-high;
};
i2cmux_3: i2cmux-3 {
pins = "GPIO_21";
function = "twi_scl_m";
output-high;
};
};
&i2c0 {
pca9545@70 {
compatible = "nxp,pca9545";
reg = <0x70>;
#address-cells = <1>;
#size-cells = <0>;
i2c-mux-idle-disconnect;
i2c124: i2c@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
};
i2c125: i2c@1 {
/* FMC B */
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
};
i2c126: i2c@2 {
#address-cells = <1>;
#size-cells = <0>;
reg = <2>;
};
i2c127: i2c@3 {
#address-cells = <1>;
#size-cells = <0>;
reg = <3>;
};
};
pca9545@71 {
compatible = "nxp,pca9545";
reg = <0x71>;
#address-cells = <1>;
#size-cells = <0>;
i2c-mux-idle-disconnect;
i2c128: i2c@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
};
i2c129: i2c@1 {
/* FMC B */
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
};
i2c130: i2c@2 {
#address-cells = <1>;
#size-cells = <0>;
reg = <2>;
};
i2c131: i2c@3 {
#address-cells = <1>;
#size-cells = <0>;
reg = <3>;
};
};
};

107
arch/mips/boot/dts/mscc/jaguar2_pcb111.dts Normal file
View File

@ -0,0 +1,107 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2018 Microsemi Corporation
*/
/dts-v1/;
#include "jaguar2_common.dtsi"
/ {
model = "Jaguar2 Cu48 PCB111 Reference Board";
compatible = "mscc,jr2-pcb111", "mscc,jr2";
aliases {
i2c0 = &i2c0;
i2c149 = &i2c149;
i2c150 = &i2c150;
i2c151 = &i2c151;
i2c152 = &i2c152;
i2c203 = &i2c203;
};
i2c0_imux: i2c0-imux {
compatible = "i2c-mux-pinctrl";
#address-cells = <1>;
#size-cells = <0>;
i2c-parent = <&i2c0>;
pinctrl-names =
"i2c149", "i2c150", "i2c151", "i2c152", "i2c203", "idle";
pinctrl-0 = <&i2cmux_0>;
pinctrl-1 = <&i2cmux_1>;
pinctrl-2 = <&i2cmux_2>;
pinctrl-3 = <&i2cmux_3>;
pinctrl-4 = <&i2cmux_pins_i>; // Added by convention for PoE
pinctrl-5 = <&i2cmux_pins_i>;
i2c149: i2c@0 {
reg = <0x0>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c150: i2c@1 {
reg = <0x1>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c151: i2c@2 {
reg = <0x2>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c152: i2c@3 {
reg = <0x3>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c203: i2c@4 {
reg = <0x4>;
#address-cells = <1>;
#size-cells = <0>;
};
};
};
&gpio {
synce_builtin_pins: synce-builtin-pins {
// GPIO 49 == SI_nCS13
pins = "GPIO_49";
function = "si";
};
cpld_pins: cpld-pins {
// GPIO 50 == SI_nCS14
pins = "GPIO_50";
function = "si";
};
cpld_fifo_pins: synce-builtin-pins {
// GPIO 51 == SI_nCS15
pins = "GPIO_51";
function = "si";
};
};
&gpio {
i2cmux_pins_i: i2cmux-pins-i {
pins = "GPIO_17", "GPIO_18";
function = "twi_scl_m";
output-low;
};
i2cmux_0: i2cmux-0 {
pins = "GPIO_17";
function = "twi_scl_m";
output-high;
};
i2cmux_1: i2cmux-1 {
pins = "GPIO_18";
function = "twi_scl_m";
output-high;
};
i2cmux_2: i2cmux-2 {
pins = "GPIO_20";
function = "twi_scl_m";
output-high;
};
i2cmux_3: i2cmux-3 {
pins = "GPIO_21";
function = "twi_scl_m";
output-high;
};
};

57
arch/mips/boot/dts/mscc/jaguar2_pcb118.dts Normal file
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@ -0,0 +1,57 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2018 Microsemi Corporation
*/
/dts-v1/;
#include "jaguar2_common.dtsi"
/ {
model = "Jaguar2/Aquantia PCB118 Reference Board";
compatible = "mscc,jr2-pcb118", "mscc,jr2";
aliases {
i2c150 = &i2c150;
i2c151 = &i2c151;
};
i2c0_imux: i2c0-imux {
compatible = "i2c-mux-pinctrl";
#address-cells = <1>;
#size-cells = <0>;
i2c-parent = <&i2c0>;
pinctrl-names =
"i2c150", "i2c151", "idle";
pinctrl-0 = <&i2cmux_0>;
pinctrl-1 = <&i2cmux_1>;
pinctrl-2 = <&i2cmux_pins_i>;
i2c150: i2c@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
};
i2c151: i2c@1 {
reg = <1>;
#address-cells = <1>;
#size-cells = <0>;
};
};
};
&gpio {
i2cmux_pins_i: i2cmux-pins-i {
pins = "GPIO_17", "GPIO_16";
function = "twi_scl_m";
output-low;
};
i2cmux_0: i2cmux-0 {
pins = "GPIO_17";
function = "twi_scl_m";
output-high;
};
i2cmux_1: i2cmux-1 {
pins = "GPIO_16";
function = "twi_scl_m";
output-high;
};
};

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