diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2020-04-13 18:21:32 +0200 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2020-05-19 18:23:22 +0200 |
| commit | 161e04a5bae58a65d2b13642845f250888a845a1 (patch) | |
| tree | a7888a90d9e0b39731c2ed87bf07135d431161b4 /arch/arm/boot/compressed/head.S | |
| parent | 691cbe5ba5f77f3759f3491b971a96f9998dcd9d (diff) | |
ARM: decompressor: split off _edata and stack base into separate object
In preparation of moving the handling of the LC0 object to a later stage
in the decompressor startup code, move out _edata and the initial value
of the stack pointer, which are needed earlier than the remaining
contents of LC0.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Nicolas Pitre <nico@fluxnic.net>
Diffstat (limited to 'arch/arm/boot/compressed/head.S')
| -rw-r--r-- | arch/arm/boot/compressed/head.S | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S index 42b8d67beab6..5d712e2c0001 100644 --- a/arch/arm/boot/compressed/head.S +++ b/arch/arm/boot/compressed/head.S @@ -293,22 +293,20 @@ not_angel: orrcc r4, r4, #1 @ remember we skipped cache_on blcs cache_on -restart: adr r0, LC0 - ldmia r0, {r1, r2, r3, r6, r11, r12} - ldr sp, [r0, #24] +restart: adr r0, LC1 + ldr sp, [r0] + ldr r6, [r0, #4] + add sp, sp, r0 + add r6, r6, r0 - /* - * We might be running at a different address. We need - * to fix up various pointers. - */ + adr r0, LC0 + ldmia r0, {r1, r2, r3, r11, r12} sub r0, r0, r1 @ calculate the delta offset - add r6, r6, r0 @ _edata get_inflated_image_size r9, r10, lr #ifndef CONFIG_ZBOOT_ROM /* malloc space is above the relocated stack (64k max) */ - add sp, sp, r0 add r10, sp, #0x10000 #else /* @@ -660,12 +658,15 @@ not_relocated: mov r0, #0 LC0: .word LC0 @ r1 .word __bss_start @ r2 .word _end @ r3 - .word _edata @ r6 .word _got_start @ r11 .word _got_end @ ip - .word .L_user_stack_end @ sp .size LC0, . - LC0 + .type LC1, #object +LC1: .word .L_user_stack_end - LC1 @ sp + .word _edata - LC1 @ r6 + .size LC1, . - LC1 + .Lheadroom: .word _end - restart + 16384 + 1024*1024 |