diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2015-01-31 00:25:30 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-02-10 11:23:13 +0100 |
| commit | bafe5865834c0cc0d0f937deecc275ccdd588ce8 (patch) | |
| tree | 76073d335eb19d674c02adb2e9b6e0d682bd169a /arch/arm/kernel | |
| parent | ARM: 8300/1: teach __asmeq that r11 == fp and r12 == ip (diff) | |
| download | linux-bafe5865834c0cc0d0f937deecc275ccdd588ce8.tar.xz linux-bafe5865834c0cc0d0f937deecc275ccdd588ce8.zip | |
ARM: 8302/1: Add a secondary_startup that assumes ARM mode
Some platforms always enter the kernel in ARM mode even if the
kernel is compiled for THUMB2. Add a small wrapper on top of
secondary_startup() that switches into THUMB2 mode.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/head.S | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index ecb7be8b0854..01963273c07a 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -346,6 +346,12 @@ __turn_mmu_on_loc: #if defined(CONFIG_SMP) .text +ENTRY(secondary_startup_arm) + .arm + THUMB( adr r9, BSYM(1f) ) @ Kernel is entered in ARM. + THUMB( bx r9 ) @ If this is a Thumb-2 kernel, + THUMB( .thumb ) @ switch to Thumb now. + THUMB(1: ) ENTRY(secondary_startup) /* * Common entry point for secondary CPUs. @@ -385,6 +391,7 @@ ENTRY(secondary_startup) THUMB( add r12, r10, #PROCINFO_INITFUNC ) THUMB( ret r12 ) ENDPROC(secondary_startup) +ENDPROC(secondary_startup_arm) /* * r6 = &secondary_data |