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Thumb-2: Implementation of the unified start-up and exceptions code

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This patch implements the ARM/Thumb-2 unified kernel start-up and
exception handling code.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas
2009-07-24 12:32:54 +01:00
parent 0becb08850
commit b86040a59f
11 changed files with 262 additions and 119 deletions
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13
arch/arm/kernel/head-common.S
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@@ -52,7 +52,9 @@ __mmap_switched:
strcc fp, [r6],#4
bcc 1b
ldmia r3, {r4, r5, r6, r7, sp}
ARM( ldmia r3, {r4, r5, r6, r7, sp})
THUMB( ldmia r3, {r4, r5, r6, r7} )
THUMB( ldr sp, [r3, #16] )
str r9, [r4] @ Save processor ID
str r1, [r5] @ Save machine type
str r2, [r6] @ Save atags pointer
@@ -156,7 +158,8 @@ ENDPROC(__error)
*/
__lookup_processor_type:
adr r3, 3f
ldmda r3, {r5 - r7}
ldmia r3, {r5 - r7}
add r3, r3, #8
sub r3, r3, r7 @ get offset between virt&phys
add r5, r5, r3 @ convert virt addresses to
add r6, r6, r3 @ physical address space
@@ -187,9 +190,9 @@ ENDPROC(lookup_processor_type)
* more information about the __proc_info and __arch_info structures.
*/
.align 2
.long __proc_info_begin
3: .long __proc_info_begin
.long __proc_info_end
3: .long .
4: .long .
.long __arch_info_begin
.long __arch_info_end
@@ -205,7 +208,7 @@ ENDPROC(lookup_processor_type)
* r5 = mach_info pointer in physical address space
*/
__lookup_machine_type:
adr r3, 3b
adr r3, 4b
ldmia r3, {r4, r5, r6}
sub r3, r3, r4 @ get offset between virt&phys
add r5, r5, r3 @ convert virt addresses to