[meta-ti] [PATCHv2] linux-omap-psp: fix alignment issue of 2.6.37 kernel with gcc-4.7

[Khem Raj]

On Mon, Feb 25, 2013 at 8:42 PM, Denys Dmytriyenko <denis at denix.org> wrote:
> From: Denys Dmytriyenko <denys at ti.com>
>
> Patch by Steve Sakoman
>
> Signed-off-by: Denys Dmytriyenko <denys at ti.com>
> ---
> v2 - move patch to a common location

btw. this wont be needed in kernels released after
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=8428e84d42179c2a00f5f6450866e70d802d1d05

so probably its better stay in specific kernel dirs which need it.

>
>  .../files/0001-arm-fix-builds-with-gcc-4.7.patch   | 26 ++++++++++++++++++++++
>  recipes-kernel/linux/linux-omap-psp_2.6.37.bb      |  9 ++++++++
>  2 files changed, 35 insertions(+)
>  create mode 100644 recipes-kernel/linux/files/0001-arm-fix-builds-with-gcc-4.7.patch
>
> diff --git a/recipes-kernel/linux/files/0001-arm-fix-builds-with-gcc-4.7.patch b/recipes-kernel/linux/files/0001-arm-fix-builds-with-gcc-4.7.patch
> new file mode 100644
> index 0000000..db701e2
> --- /dev/null
> +++ b/recipes-kernel/linux/files/0001-arm-fix-builds-with-gcc-4.7.patch
> @@ -0,0 +1,26 @@
> +From 0d12debe917269a013f8eddd42da8d3de5e3174e Mon Sep 17 00:00:00 2001
> +From: Steve Sakoman <steve at sakoman.com>
> +Date: Thu, 24 Jan 2013 15:42:01 -0800
> +Subject: [PATCH] arm: fix builds with gcc 4.7
> +
> +new unaligned access support in GCC was triggering an alignment fault at boot
> +---
> + arch/arm/kernel/head.S | 2 +-
> + 1 file changed, 1 insertion(+), 1 deletion(-)
> +
> +diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
> +index 6bd82d2..56b02cd 100644
> +--- a/arch/arm/kernel/head.S
> ++++ b/arch/arm/kernel/head.S
> +@@ -336,7 +336,7 @@ __secondary_data:
> +  *  r13 = *virtual* address to jump to upon completion
> +  */
> + __enable_mmu:
> +-#ifdef CONFIG_ALIGNMENT_TRAP
> ++#if defined(CONFIG_ALIGNMENT_TRAP) && __LINUX_ARM_ARCH__ < 6
> +       orr     r0, r0, #CR_A
> + #else
> +       bic     r0, r0, #CR_A
> +--
> +1.8.1.2
> +
> diff --git a/recipes-kernel/linux/linux-omap-psp_2.6.37.bb b/recipes-kernel/linux/linux-omap-psp_2.6.37.bb
> index bafeba5..9eacfc9 100644
> --- a/recipes-kernel/linux/linux-omap-psp_2.6.37.bb
> +++ b/recipes-kernel/linux/linux-omap-psp_2.6.37.bb
> @@ -6,6 +6,10 @@ COMPATIBLE_MACHINE = "omap3"
>
>  SRCREV= "20c003f2f024d9f50f59edf9f1b8f5f035fb15b8"
>
> +# The main PR is now using MACHINE_KERNEL_PR, for omap3 devices
> +# see conf/machine/include/omap3.inc
> +MACHINE_KERNEL_PR_append = "a"
> +
>  SRC_URI = "git://arago-project.org/git/projects/linux-omap3.git;protocol=git \
>             file://defconfig"
>
> @@ -83,6 +87,11 @@ SRC_URI += " \
>      file://0002-usb-musb-am35x-fix-role-switching-issue.patch \
>  "
>
> +# Fix alignment issue with gcc-4.7
> +SRC_URI += " \
> +    file://0001-arm-fix-builds-with-gcc-4.7.patch \
> +"
> +
>  # Updated PIO mode for MUSB help description
>  SRC_URI_append_am3517-evm = " file://0001-musb-update-PIO-mode-help-information-in-Kconfig.patch"
>
> --
> 1.8.1.4
>
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