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ARM: turn CONFIG_ATAGS off by default

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Only a very small number of machines remain that rely on
traditional board files with the ATAGS boot data instead
of devicetree, and we have not accepted new ones for
a decade.

Most of the remaining ones are on their way out of the
kernel, but the Kconfig option that controls ATAGS
is still enabled by default.

To reflect the actual status of ATAGS support and alert
the remaining users of upstream and out-of-tree platforms
with this, change it to being default-disabled and
add a dependency on CONFIG_EXPERT.

The board specific defconfig files that rely on ATAGS
are changed to turn on both EXPERT and ATAGS if they
were not doing that already, and the ones that explicitly
turned it off before no longer need to.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> # OMAP
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2024-08-20 21:16:45 +00:00
parent b5fdfa2081
commit db75f16378
26 changed files with 29 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/arm/Kconfig
View File

@ -1390,12 +1390,15 @@ config ARCH_WANT_FLAT_DTB_INSTALL
config ATAGS
bool "Support for the traditional ATAGS boot data passing"
default y
depends on EXPERT
help
This is the traditional way of passing data to the kernel at boot
time. If you are solely relying on the flattened device tree (or
the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
to remove ATAGS support from your kernel binary.
This is the traditional way of passing data to the kernel at
boot but is now only used by a few of the oldest ARMv4 and
ARMv5 machines. Users that still rely on ATAGS should plan
on migrating to devicetree based booting.
Support for ATAGS will be removed when the last machine using
it is either converted to DT or removed.
config DEPRECATED_PARAM_STRUCT
bool "Provide old way to pass kernel parameters"

1
arch/arm/configs/am200epdkit_defconfig
View File

@ -7,6 +7,7 @@ CONFIG_EXPERT=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_PXA=y
CONFIG_ARCH_GUMSTIX=y
CONFIG_ATAGS=y
CONFIG_CMDLINE="console=ttyS0,115200n8 root=1f01 rootfstype=jffs2"
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y

1
arch/arm/configs/aspeed_g4_defconfig
View File

@ -23,7 +23,6 @@ CONFIG_ARCH_ASPEED=y
CONFIG_MACH_ASPEED_G4=y
CONFIG_VMSPLIT_2G=y
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_JUMP_LABEL=y
CONFIG_STRICT_KERNEL_RWX=y
# CONFIG_BLK_DEBUG_FS is not set

1
arch/arm/configs/aspeed_g5_defconfig
View File

@ -29,7 +29,6 @@ CONFIG_VMSPLIT_2G=y
CONFIG_NR_CPUS=2
CONFIG_HIGHMEM=y
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_VFP=y
CONFIG_NEON=y
CONFIG_KERNEL_MODE_NEON=y

2
arch/arm/configs/assabet_defconfig
View File

@ -1,11 +1,13 @@
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_SA1100=y
CONFIG_SA1100_ASSABET=y
# CONFIG_AEABI is not set
CONFIG_ATAGS=y
CONFIG_CMDLINE="mem=32M console=ttySA0,38400n8 initrd=0xc0800000,3M root=/dev/ram"
CONFIG_FPE_NWFPE=y
CONFIG_PM=y

1
arch/arm/configs/at91_dt_defconfig
View File

@ -19,7 +19,6 @@ CONFIG_SOC_SAM9X60=y
CONFIG_SOC_SAM9X7=y
# CONFIG_ATMEL_CLOCKSOURCE_PIT is not set
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_CMDLINE="console=ttyS0,115200 initrd=0x21100000,25165824 root=/dev/ram0 rw"

1
arch/arm/configs/collie_defconfig
View File

@ -9,6 +9,7 @@ CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_SA1100=y
CONFIG_SA1100_COLLIE=y
CONFIG_ATAGS=y
CONFIG_CMDLINE="noinitrd root=/dev/mtdblock2 rootfstype=jffs2 fbcon=rotate:1"
CONFIG_PM=y
# CONFIG_SWAP is not set

1
arch/arm/configs/dove_defconfig
View File

@ -8,6 +8,7 @@ CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_DOVE=y
CONFIG_MACH_CM_A510=y
CONFIG_HIGHMEM=y
CONFIG_ATAGS=y
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
CONFIG_VFP=y

1
arch/arm/configs/footbridge_defconfig
View File

@ -9,6 +9,7 @@ CONFIG_ARCH_MULTI_V4=y
CONFIG_ARCH_FOOTBRIDGE=y
CONFIG_ARCH_EBSA285_HOST=y
CONFIG_ARCH_NETWINDER=y
CONFIG_ATAGS=y
CONFIG_FPE_NWFPE=y
CONFIG_FPE_NWFPE_XP=y
# CONFIG_AEABI is not set

2
arch/arm/configs/h3600_defconfig
View File

@ -4,11 +4,13 @@ CONFIG_HIGH_RES_TIMERS=y
CONFIG_PREEMPT=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_SA1100=y
CONFIG_SA1100_H3600=y
# CONFIG_CPU_FREQ_STAT is not set
CONFIG_ATAGS=y
CONFIG_MODULES=y
CONFIG_NET=y
CONFIG_UNIX=y

1
arch/arm/configs/integrator_defconfig
View File

@ -13,7 +13,6 @@ CONFIG_ARCH_INTEGRATOR=y
CONFIG_ARCH_INTEGRATOR_AP=y
CONFIG_INTEGRATOR_IMPD1=y
CONFIG_ARCH_INTEGRATOR_CP=y
# CONFIG_ATAGS is not set
CONFIG_CMDLINE="console=ttyAM0,38400n8 root=/dev/nfs ip=bootp"
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y

2
arch/arm/configs/jornada720_defconfig
View File

@ -1,11 +1,13 @@
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_EXPERT=y
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_SA1100=y
CONFIG_SA1100_JORNADA720=y
CONFIG_SA1100_JORNADA720_SSP=y
CONFIG_PM=y
CONFIG_ATAGS=y
CONFIG_MODULES=y
CONFIG_NET=y
CONFIG_PACKET=y

1
arch/arm/configs/moxart_defconfig
View File

@ -16,7 +16,6 @@ CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_MOXART=y
CONFIG_MACH_UC7112LX=y
# CONFIG_ATAGS is not set
CONFIG_ARM_APPENDED_DTB=y
# CONFIG_SWAP is not set
# CONFIG_COMPAT_BRK is not set

1
arch/arm/configs/mps2_defconfig
View File

@ -16,7 +16,6 @@ CONFIG_ARCH_MPS2=y
CONFIG_SET_MEM_PARAM=y
CONFIG_DRAM_BASE=0x21000000
CONFIG_DRAM_SIZE=0x1000000
# CONFIG_ATAGS is not set
# CONFIG_SUSPEND is not set
# CONFIG_BLOCK is not set
CONFIG_BINFMT_FLAT=y

1
arch/arm/configs/multi_v4t_defconfig
View File

@ -17,7 +17,6 @@ CONFIG_INTEGRATOR_IMPD1=y
CONFIG_INTEGRATOR_CM720T=y
CONFIG_INTEGRATOR_CM920T=y
CONFIG_INTEGRATOR_CM922T_XA10=y
# CONFIG_ATAGS is not set
CONFIG_CPU_IDLE=y
CONFIG_ARM_CPUIDLE=y
CONFIG_ARM_CLPS711X_CPUIDLE=y

1
arch/arm/configs/mv78xx0_defconfig
View File

@ -12,6 +12,7 @@ CONFIG_ARCH_MULTI_V5=y
CONFIG_ARCH_MV78XX0=y
CONFIG_MACH_TERASTATION_WXL=y
CONFIG_HIGHMEM=y
CONFIG_ATAGS=y
CONFIG_VFP=y
CONFIG_KPROBES=y
CONFIG_MODULES=y

2
arch/arm/configs/neponset_defconfig
View File

@ -1,11 +1,13 @@
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_SA1100=y
CONFIG_SA1100_ASSABET=y
CONFIG_ASSABET_NEPONSET=y
CONFIG_ATAGS=y
CONFIG_ZBOOT_ROM_TEXT=0x80000
CONFIG_ZBOOT_ROM_BSS=0xc1000000
CONFIG_ZBOOT_ROM=y

2
arch/arm/configs/netwinder_defconfig
View File

@ -1,10 +1,12 @@
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_EXPERT=y
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_FOOTBRIDGE=y
CONFIG_ARCH_NETWINDER=y
# CONFIG_AEABI is not set
CONFIG_ATAGS=y
CONFIG_DEPRECATED_PARAM_STRUCT=y
CONFIG_CMDLINE="root=0x801"
CONFIG_FPE_NWFPE=y

1
arch/arm/configs/omap1_defconfig
View File

@ -28,6 +28,7 @@ CONFIG_MACH_OMAP_PALMTE=y
CONFIG_MACH_SX1=y
CONFIG_MACH_NOKIA770=y
CONFIG_MACH_AMS_DELTA=y
CONFIG_ATAGS=y
CONFIG_CMDLINE="root=1f03 rootfstype=jffs2"
# CONFIG_SUSPEND is not set
CONFIG_PM=y

2
arch/arm/configs/rpc_defconfig
View File

@ -2,12 +2,14 @@
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_ARCH_MULTI_V4=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_RPC=y
CONFIG_CPU_SA110=y
CONFIG_FPE_NWFPE=y
# CONFIG_AEABI is not set
CONFIG_ATAGS=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_PARTITION_ADVANCED=y

2
arch/arm/configs/s3c6400_defconfig
View File

@ -2,8 +2,10 @@ CONFIG_BLK_DEV_INITRD=y
CONFIG_KALLSYMS_ALL=y
CONFIG_ARCH_MULTI_V6=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_EXPERT=y
CONFIG_ARCH_S3C64XX=y
CONFIG_MACH_WLF_CRAGG_6410=y
CONFIG_ATAGS=y
CONFIG_CMDLINE="console=ttySAC0,115200 root=/dev/ram init=/linuxrc initrd=0x51000000,6M ramdisk_size=6144"
CONFIG_VFP=y
CONFIG_MODULES=y

1
arch/arm/configs/sama5_defconfig
View File

@ -13,7 +13,6 @@ CONFIG_SOC_SAMA5D3=y
CONFIG_SOC_SAMA5D4=y
# CONFIG_ATMEL_CLOCKSOURCE_PIT is not set
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_CMDLINE="console=ttyS0,115200 initrd=0x21100000,25165824 root=/dev/ram0 rw"
CONFIG_VFP=y
CONFIG_NEON=y

1
arch/arm/configs/sama7_defconfig
View File

@ -20,7 +20,6 @@ CONFIG_ATMEL_CLOCKSOURCE_TCB=y
# CONFIG_CPU_SW_DOMAIN_PAN is not set
CONFIG_ARCH_FORCE_MAX_ORDER=14
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_CMDLINE="console=ttyS0,115200 earlyprintk ignore_loglevel"
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE=y

1
arch/arm/configs/spitz_defconfig
View File

@ -10,6 +10,7 @@ CONFIG_ARCH_PXA=y
CONFIG_PXA_SHARPSL=y
CONFIG_MACH_AKITA=y
CONFIG_MACH_BORZOI=y
CONFIG_ATAGS=y
CONFIG_CMDLINE="console=ttyS0,115200n8 console=tty1 noinitrd root=/dev/mtdblock2 rootfstype=jffs2 debug"
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y

1
arch/arm/configs/stm32_defconfig
View File

@ -20,7 +20,6 @@ CONFIG_ARCH_STM32=y
CONFIG_CPU_V7M_NUM_IRQ=240
CONFIG_SET_MEM_PARAM=y
CONFIG_DRAM_BASE=0x90000000
# CONFIG_ATAGS is not set
CONFIG_XIP_KERNEL=y
CONFIG_XIP_PHYS_ADDR=0x08008000
# CONFIG_SUSPEND is not set

1
arch/arm/configs/wpcm450_defconfig
View File

@ -14,7 +14,6 @@ CONFIG_ARCH_NPCM=y
CONFIG_ARCH_WPCM450=y
CONFIG_CPU_DCACHE_WRITETHROUGH=y
CONFIG_UACCESS_WITH_MEMCPY=y
# CONFIG_ATAGS is not set
CONFIG_ARM_APPENDED_DTB=y
CONFIG_CPU_IDLE=y
CONFIG_KPROBES=y