From: ben.dooks@codethink.co.uk (Ben Dooks)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 04/19] ARM: set BE8 if LE in head code
Date: Wed, 28 Aug 2013 12:45:44 +0100 [thread overview]
Message-ID: <1377690359-25397-5-git-send-email-ben.dooks@codethink.co.uk> (raw)
In-Reply-To: <1377690359-25397-1-git-send-email-ben.dooks@codethink.co.uk>
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>
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
next prev parent reply other threads:[~2013-08-28 11:45 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
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 ` Ben Dooks [this message]
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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