[Buildroot] [PATCH 2/4] arm: update processor types
Romain Naour
romain.naour at openwide.fr
Mon Feb 2 16:18:11 UTC 2015
Hi Ezequiel,
Le 22/01/2015 19:33, Ezequiel Garcia a écrit :
> From: Guido Martínez <guido at vanguardiasur.com.ar>
>
> Add the Cortex M3 variant. These microcontrollers don't support regular
> ARM instructions and don't have an MMU.
>
> Signed-off-by: Guido Martínez <guido at vanguardiasur.com.ar>
> ---
> arch/Config.in | 8 ++++----
> arch/Config.in.arm | 5 +++++
> toolchain/toolchain-common.in | 6 ++++--
> 3 files changed, 13 insertions(+), 6 deletions(-)
>
> diff --git a/arch/Config.in b/arch/Config.in
> index 890e7e2..6f7d608 100644
> --- a/arch/Config.in
> +++ b/arch/Config.in
> @@ -258,13 +258,13 @@ config BR2_BINFMT_SUPPORTS_SHARED
> # Set up target binary format
> choice
> prompt "Target Binary Format"
> - default BR2_BINFMT_ELF if !(BR2_bfin || BR2_m68k)
> + default BR2_BINFMT_ELF if !(BR2_bfin || BR2_m68k || BR2_cortex_m3)
> default BR2_BINFMT_FDPIC if BR2_bfin
> - default BR2_BINFMT_FLAT if BR2_m68k
> + default BR2_BINFMT_FLAT if BR2_m68k || BR2_cortex_m3
What do you think about adding BR2_ARCH_HAS_EFL_SUPPORT in each architecture
Config.in.x instead of black-listing them here ?
>
> config BR2_BINFMT_ELF
> bool "ELF"
> - depends on !BR2_bfin && !BR2_m68k
> + depends on !BR2_bfin && !BR2_m68k && !BR2_cortex_m3
> select BR2_BINFMT_SUPPORTS_SHARED
> help
> ELF (Executable and Linkable Format) is a format for libraries and
> @@ -283,7 +283,7 @@ config BR2_BINFMT_FDPIC
>
> config BR2_BINFMT_FLAT
> bool "FLAT"
> - depends on BR2_bfin || BR2_m68k
> + depends on BR2_bfin || BR2_m68k || BR2_cortex_m3
Same here with BR2_ARCH_HAS_FLAT_SUPPORT.
> help
> FLAT binary is a relatively simple and lightweight executable format
> based on the original a.out format. It is widely used in environment
> diff --git a/arch/Config.in.arm b/arch/Config.in.arm
> index a2d113a..1e22ab8 100644
> --- a/arch/Config.in.arm
> +++ b/arch/Config.in.arm
> @@ -134,6 +134,10 @@ config BR2_cortex_a15
> select BR2_ARM_CPU_HAS_VFPV4
> select BR2_ARM_CPU_HAS_THUMB2
> select BR2_ARM_CPU_ARMV7A
> +config BR2_cortex_m3
> + bool "cortex-M3"
> + select BR2_ARM_CPU_HAS_THUMB
> + select BR2_ARM_CPU_HAS_THUMB2
> config BR2_fa526
> bool "fa526/626"
> select BR2_ARM_CPU_HAS_ARM
> @@ -396,6 +400,7 @@ config BR2_GCC_TARGET_CPU
> default "cortex-a9" if BR2_cortex_a9
> default "cortex-a12" if BR2_cortex_a12
> default "cortex-a15" if BR2_cortex_a15
> + default "cortex-m3" if BR2_cortex_m3
> default "fa526" if BR2_fa526
> default "marvell-pj4" if BR2_pj4
> default "strongarm" if BR2_strongarm
> diff --git a/toolchain/toolchain-common.in b/toolchain/toolchain-common.in
> index 2ee2019..fd6ef53 100644
> --- a/toolchain/toolchain-common.in
> +++ b/toolchain/toolchain-common.in
> @@ -114,8 +114,10 @@ config BR2_NEEDS_GETTEXT_IF_LOCALE
> default y if (BR2_NEEDS_GETTEXT && BR2_ENABLE_LOCALE)
>
> config BR2_USE_MMU
> - bool "Enable MMU support" if BR2_arm || BR2_armeb || BR2_sh || BR2_xtensa
> - default y if !BR2_bfin
> + bool "Enable MMU support"
> + depends on BR2_arm || BR2_armeb || BR2_sh || BR2_xtensa
> + depends on !BR2_cortex_m3 && !BR2_bfin
> + default y
And here with BR2_ARCH_HAS_MMU_SUPPORT ?
> help
> If your target has a MMU, you should say Y here. If you
> are unsure, just say Y.
>
Best regards,
Romain Naour
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