[Buildroot] [PATCH v2 1/6] arm: update processor types
Guido Martínez
guido at vanguardiasur.com.ar
Mon May 18 14:24:43 UTC 2015
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 06aff2c..8ff4a05 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -244,13 +244,13 @@ 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
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
@@ -269,7 +269,7 @@ 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
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 f5d317b..44dd47c 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
@@ -391,6 +395,7 @@ 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 d50c908..d71b850 100644
--- a/toolchain/toolchain-common.in
+++ b/toolchain/toolchain-common.in
@@ -108,8 +108,10 @@ 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
help
If your target has a MMU, you should say Y here. If you
are unsure, just say Y.
--
2.1.4
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