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Vladimir Murzin 8071075d6e ARM: 8955/1: virt: Relax arch timer version check during early boot 
[ Upstream commit 6849b5eba1 ]

Updates to the Generic Timer architecture allow ID_PFR1.GenTimer to
have values other than 0 or 1 while still preserving backward
compatibility. At the moment, Linux is quite strict in the way it
handles this field at early boot and will not configure arch timer if
it doesn't find the value 1.

Since here use ubfx for arch timer version extraction (hyb-stub build
with -march=armv7-a, so it is safe)

To help backports (even though the code was correct at the time of writing)

Fixes: 8ec58be9f3 ("ARM: virt: arch_timers: enable access to physical timers")
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-05 14:43:50 +00:00
..
.gitignore
arch_timer.c
armksyms.c ARM: 8745/1: get rid of __memzero() 2018-01-21 15:37:56 +00:00
asm-offsets.c include/linux/compiler*.h: make compiler-*.h mutually exclusive 2018-08-22 17:31:34 -07:00
atags_compat.c
atags_parse.c ARM: better diagnostics with missing/corrupt dtb 2017-09-29 13:57:21 +01:00
atags_proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atags.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bios32.c PCI: Remove PCI_REASSIGN_ALL_RSRC use on arm and arm64 2017-12-18 23:07:43 -06:00
bugs.c ARM: clean up per-processor check_bugs method call 2019-02-20 10:25:38 +01:00
cpuidle.c
crash_dump.c
debug.S Merge branches 'fixes', 'misc' and 'sa1111-for-next' into for-next 2017-11-08 19:42:43 +00:00
devtree.c
dma-isa.c
dma.c proc: introduce proc_create_single{,_data} 2018-05-16 07:23:35 +02:00
early_printk.c ARM: 8705/1: early_printk: use printascii() rather than printch() 2017-10-12 11:29:29 +01:00
efi.c
elf.c Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-11-16 12:50:35 -08:00
entry-armv.S ARM: Convert to GENERIC_IRQ_MULTI_HANDLER 2018-08-03 12:14:08 +02:00
entry-common.S ARM: 8802/1: Call syscall_trace_exit even when system call skipped 2019-11-24 08:20:56 +01:00
entry-ftrace.S
entry-header.S ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of 2019-04-05 22:33:12 +02:00
entry-v7m.S ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of 2019-04-05 22:33:12 +02:00
fiq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fiqasm.S
ftrace.c ARM: function_graph: Simplify with function_graph_enter() 2018-12-05 19:32:09 +01:00
head-common.S ARM: 8914/1: NOMMU: Fix exc_ret for XIP 2019-11-06 13:06:10 +01:00
head-inflate-data.c ARM: XIP kernel: store .data compressed in ROM 2017-09-10 19:34:53 -04:00
head-nommu.S ARM: 8849/1: NOMMU: Fix encodings for PMSAv8's PRBAR4/PRLAR4 2020-01-27 14:50:28 +01:00
head.S
hibernate.c
hw_breakpoint.c perf/arch/arm: Implement hw_breakpoint_arch_parse() 2018-06-26 09:07:56 +02:00
hyp-stub.S ARM: 8955/1: virt: Relax arch timer version check during early boot 2020-02-05 14:43:50 +00:00
insn.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq.c ARM: 8824/1: fix a migrating irq bug when hotplug cpu 2019-03-23 20:09:48 +01:00
isa.c
iwmmxt.S
jump_label.c jump_label: move 'asm goto' support test to Kconfig 2019-06-04 08:02:34 +02:00
kgdb.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
machine_kexec.c ARM: avoid Cortex-A9 livelock on tight dmb loops 2019-04-05 22:33:12 +02:00
Makefile ARM: bugs: prepare processor bug infrastructure 2018-05-31 10:39:18 +01:00
module-plts.c
module.c
module.lds License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
opcodes.c
paravirt.c
patch.c ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t 2019-04-20 09:16:04 +02:00
perf_callchain.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf_event_v6.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_event_v7.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_event_xscale.c arm_pmu: Tidy up clear_event_idx call backs 2018-07-10 18:19:02 +01:00
perf_regs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pj4-cp0.c
process.c mm: zero out the vma in vma_init() 2018-08-22 10:52:44 -07:00
psci_smp.c
ptrace.c signal: Ensure every siginfo we send has all bits initialized 2018-04-25 10:40:51 -05:00
reboot.c
reboot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
relocate_kernel.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
return_address.c
setup.c ARM: spectre-v2: per-CPU vtables to work around big.Little systems 2019-02-20 10:25:38 +01:00
signal.c ARM: 8793/1: signal: replace __put_user_error with __put_user 2019-02-20 10:25:36 +01:00
signal.h ARM: signal handling support for FDPIC_FUNCPTRS functions 2017-09-10 19:31:46 -04:00
sigreturn_codes.S ARM: signal handling support for FDPIC_FUNCPTRS functions 2017-09-10 19:31:46 -04:00
sleep.S ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used 2020-01-27 14:50:28 +01:00
smccc-call.S
smp_scu.c ARM: smp_scu: allow the platform code to read the SCU CPU status 2017-10-29 08:29:30 -07:00
smp_tlb.c
smp_twd.c
smp.c ARM: prevent tracing IPI_CPU_BACKTRACE 2019-06-15 11:54:00 +02:00
stacktrace.c ARM: probes: avoid adding kprobes to sensitive kernel-entry/exit code 2017-12-17 22:14:21 +00:00
suspend.c ARM: bugs: hook processor bug checking into SMP and suspend paths 2018-05-31 10:39:29 +01:00
swp_emulate.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-06-04 15:23:48 -07:00
sys_arm.c mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64() 2018-04-02 20:16:10 +02:00
sys_oabi-compat.c ARM: 8792/1: oabi-compat: copy oabi events using __copy_to_user() 2019-02-20 10:25:36 +01:00
tcm.c
thumbee.c
time.c ARM/time: Remove read_boot_clock64() 2018-07-20 00:02:41 +02:00
topology.c
traps.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-06-04 15:23:48 -07:00
unwind.c ARM: 8840/1: use a raw_spinlock_t in unwind 2019-04-05 22:33:01 +02:00
v7m.c
vdso.c ARM: 8896/1: VDSO: Don't leak kernel addresses 2020-01-27 14:51:07 +01:00
vmlinux-xip.lds.S ARM: 8757/1: NOMMU: Support PMSAv8 MPU 2018-05-19 11:53:46 +01:00
vmlinux.lds.h vmlinux.lds.h: Fix incomplete .text.exit discards 2018-10-12 08:54:58 +11:00
vmlinux.lds.S ARM: 8757/1: NOMMU: Support PMSAv8 MPU 2018-05-19 11:53:46 +01:00
xscale-cp0.c