From mboxrd@z Thu Jan 1 00:00:00 1970 From: Romain Naour Date: Mon, 02 Feb 2015 17:18:11 +0100 Subject: [Buildroot] [PATCH 2/4] arm: update processor types In-Reply-To: <1421951608-31233-3-git-send-email-ezequiel@vanguardiasur.com.ar> References: <1421951608-31233-1-git-send-email-ezequiel@vanguardiasur.com.ar> <1421951608-31233-3-git-send-email-ezequiel@vanguardiasur.com.ar> Message-ID: <54CFA343.9090806@openwide.fr> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hi Ezequiel, Le 22/01/2015 19:33, Ezequiel Garcia a ?crit : > From: Guido Mart?nez > > Add the Cortex M3 variant. These microcontrollers don't support regular > ARM instructions and don't have an MMU. > > Signed-off-by: Guido Mart?nez > --- > 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