From: Dave.Martin@arm.com (Dave Martin)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 04/19] ARM: set BE8 if LE in head code
Date: Wed, 28 Aug 2013 17:42:26 +0100 [thread overview]
Message-ID: <20130828164226.GC3842@localhost.localdomain> (raw)
In-Reply-To: <1377639509-22778-5-git-send-email-ben.dooks@codethink.co.uk>
On Tue, Aug 27, 2013 at 10:38:14PM +0100, Ben Dooks wrote:
> If we are booting in LE and compiled for BE8, then add code to
> set the state to bE8. Since the instruction stream is always LE,
> we do not need to do anything special to the instruction.
>
> Also ensure that the secondary processors are started in the same mode.
>
> Note, we do add about 20 bytes to the kernel image, but it seems easier
> to do this than adding another configuration to change.
>
> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
(Lose the merge conflicts lines, though)
>
> Conflicts:
> arch/arm/kernel/sleep.S
> ---
> arch/arm/boot/compressed/head.S | 1 +
> arch/arm/kernel/head.S | 4 ++++
> arch/arm/kernel/sleep.S | 1 +
> 3 files changed, 6 insertions(+)
>
> diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
> index c912c2a..066b034 100644
> --- a/arch/arm/boot/compressed/head.S
> +++ b/arch/arm/boot/compressed/head.S
> @@ -135,6 +135,7 @@ start:
> .word _edata @ zImage end address
> THUMB( .thumb )
> 1:
> + ARM_BE8( setend be ) @ go BE8 if compiled for BE8
> mrs r9, cpsr
> #ifdef CONFIG_ARM_VIRT_EXT
> bl __hyp_stub_install @ get into SVC mode, reversibly
> diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
> index 9e5906c..a047acf 100644
> --- a/arch/arm/kernel/head.S
> +++ b/arch/arm/kernel/head.S
> @@ -77,6 +77,7 @@
>
> __HEAD
> ENTRY(stext)
> + ARM_BE8(setend be ) @ ensure we are in BE8 mode
>
> THUMB( adr r9, BSYM(1f) ) @ Kernel is always entered in ARM.
> THUMB( bx r9 ) @ If this is a Thumb-2 kernel,
> @@ -352,6 +353,9 @@ ENTRY(secondary_startup)
> * the processor type - there is no need to check the machine type
> * as it has already been validated by the primary processor.
> */
> +
> + ARM_BE8(setend be) @ ensure we are in BE8 mode
> +
> #ifdef CONFIG_ARM_VIRT_EXT
> bl __hyp_stub_install_secondary
> #endif
> diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S
> index db1536b..716343c 100644
> --- a/arch/arm/kernel/sleep.S
> +++ b/arch/arm/kernel/sleep.S
> @@ -130,6 +130,7 @@ ENDPROC(cpu_resume_after_mmu)
> .data
> .align
> ENTRY(cpu_resume)
> +ARM_BE8(setend be) @ ensure we are in BE mode
> mov r1, #0
> ALT_SMP(mrc p15, 0, r0, c0, c0, 5)
> ALT_UP_B(1f)
> --
> 1.7.10.4
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2013-08-28 16:42 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-27 21:38 3.11-rc7 big-endian support Ben Dooks
2013-08-27 21:38 ` [PATCH 01/19] ARM: fix ARCH_IXP4xx usage of ARCH_SUPPORTS_BIG_ENDIAN Ben Dooks
2013-08-27 21:38 ` [PATCH 02/19] ARM: asm: Add ARM_BE8() assembly helper Ben Dooks
2013-08-27 21:38 ` [PATCH 03/19] ARM: fixup_pv_table bug when CPU_ENDIAN_BE8 Ben Dooks
2013-08-28 16:54 ` Dave Martin
2013-08-27 21:38 ` [PATCH 04/19] ARM: set BE8 if LE in head code Ben Dooks
2013-08-28 10:21 ` Thomas Petazzoni
2013-08-28 16:42 ` Dave Martin [this message]
2013-08-27 21:38 ` [PATCH 05/19] ARM: pl01x debug code endian fix Ben Dooks
2013-08-28 17:03 ` Dave Martin
2013-08-27 21:38 ` [PATCH 06/19] ARM: twd: data " Ben Dooks
2013-08-27 21:38 ` [PATCH 07/19] ARM: smp_scu: data endian fixes Ben Dooks
2013-08-27 21:38 ` [PATCH 08/19] highbank: enable big-endian Ben Dooks
2013-08-28 15:21 ` Rob Herring
2013-08-30 18:50 ` Ben Dooks
2013-08-27 21:38 ` [PATCH 09/19] mvebu: support running big-endian Ben Dooks
2013-08-27 21:38 ` [PATCH 10/19] vexpress: add big endian support Ben Dooks
2013-08-27 21:38 ` [PATCH 11/19] ARM: alignment: correctly decode instructions in BE8 mode Ben Dooks
2013-08-28 16:44 ` Dave Martin
2013-08-27 21:38 ` [PATCH 12/19] ARM: traps: use <asm/opcodes.h> to get correct instruction order Ben Dooks
2013-08-28 11:22 ` Dave Martin
2013-08-27 21:38 ` [PATCH 13/19] ARM: module: correctly relocate instructions in BE8 Ben Dooks
2013-08-28 16:46 ` Dave Martin
2013-08-27 21:38 ` [PATCH 14/19] ARM: set --be8 when linking modules Ben Dooks
2013-08-28 16:38 ` Dave Martin
2013-08-30 18:55 ` Ben Dooks
2013-08-27 21:38 ` [PATCH 15/19] ARM: hardware: fix endian-ness in <hardware/coresight.h> Ben Dooks
2013-08-27 21:38 ` [PATCH 16/19] ARM: net: fix arm instruction endian-ness in bpf_jit_32.c Ben Dooks
2013-08-28 16:47 ` Dave Martin
2013-08-27 21:38 ` [PATCH 17/19] ARM: Correct BUG() assembly to ensure it is endian-agnostic Ben Dooks
2013-08-28 16:48 ` Dave Martin
2013-08-27 21:38 ` [PATCH 18/19] ARM: kdgb: use <asm/opcodes.h> for data to be assembled as intruction Ben Dooks
2013-08-28 16:50 ` Dave Martin
2013-08-27 21:38 ` [PATCH 19/19] ARM: atomic64: fix endian-ness in atomic.h Ben Dooks
2013-08-27 22:02 ` 3.11-rc7 big-endian support Ben Dooks
2013-08-29 9:59 ` Thomas Petazzoni
2013-08-29 10:23 ` Ben Dooks
2013-08-29 10:28 ` Thomas Petazzoni
2013-08-29 15:53 ` Victor Kamensky
2013-08-29 17:17 ` Ben Dooks
2013-08-28 11:45 ` re-send patch series due to mta issues Ben Dooks
2013-08-28 11:45 ` [PATCH 01/19] ARM: fix ARCH_IXP4xx usage of ARCH_SUPPORTS_BIG_ENDIAN Ben Dooks
2013-08-28 11:45 ` [PATCH 02/19] ARM: asm: Add ARM_BE8() assembly helper Ben Dooks
2013-08-28 11:45 ` [PATCH 03/19] ARM: fixup_pv_table bug when CPU_ENDIAN_BE8 Ben Dooks
2013-08-28 11:45 ` [PATCH 04/19] ARM: set BE8 if LE in head code Ben Dooks
2013-08-28 11:45 ` [PATCH 05/19] ARM: pl01x debug code endian fix Ben Dooks
2013-08-28 11:45 ` [PATCH 06/19] ARM: twd: data " Ben Dooks
2013-08-28 11:45 ` [PATCH 07/19] ARM: smp_scu: data endian fixes Ben Dooks
2013-08-28 11:45 ` [PATCH 08/19] highbank: enable big-endian Ben Dooks
2013-08-28 11:45 ` [PATCH 09/19] mvebu: support running big-endian Ben Dooks
2013-08-28 11:45 ` [PATCH 10/19] vexpress: add big endian support Ben Dooks
2013-08-28 11:45 ` [PATCH 11/19] ARM: alignment: correctly decode instructions in BE8 mode Ben Dooks
2013-08-28 19:40 ` Sergei Shtylyov
2013-08-30 18:47 ` Ben Dooks
2013-08-28 11:45 ` [PATCH 12/19] ARM: traps: use <asm/opcodes.h> to get correct instruction order Ben Dooks
2013-08-28 11:45 ` [PATCH 13/19] ARM: module: correctly relocate instructions in BE8 Ben Dooks
2013-08-28 11:45 ` [PATCH 14/19] ARM: set --be8 when linking modules Ben Dooks
2013-08-28 11:45 ` [PATCH 15/19] ARM: hardware: fix endian-ness in <hardware/coresight.h> Ben Dooks
2013-08-28 11:45 ` [PATCH 16/19] ARM: net: fix arm instruction endian-ness in bpf_jit_32.c Ben Dooks
2013-08-28 11:45 ` [PATCH 17/19] ARM: Correct BUG() assembly to ensure it is endian-agnostic Ben Dooks
2013-08-28 11:45 ` [PATCH 18/19] ARM: kdgb: use <asm/opcodes.h> for data to be assembled as intruction Ben Dooks
2013-08-28 11:45 ` [PATCH 19/19] ARM: atomic64: fix endian-ness in atomic.h Ben Dooks
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