leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ARM: 8302/1: Add a secondary_startup that assumes ARM mode

Browse Source 
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>
This commit is contained in:
Stephen Boyd 2015-01-31 00:25:30 +01:00 committed by Russell King
parent ada63d4074
commit bafe586583
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/arm/kernel/head.S
View File

@ -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