diff options
| -rw-r--r-- | src/arch/arm/armv7/bootblock_m.S | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/arch/arm/armv7/bootblock_m.S b/src/arch/arm/armv7/bootblock_m.S index 0a29a0b4cc..2e46ca064f 100644 --- a/src/arch/arm/armv7/bootblock_m.S +++ b/src/arch/arm/armv7/bootblock_m.S @@ -31,5 +31,20 @@ #include <arch/asm.h> ENTRY(_start) + /* + * Initialize the stack to a known value. This is used to check for + * stack overflow later in the boot process. + */ + ldr r0, =_stack + ldr r1, =_estack + ldr r2, =0xdeadbeef +init_stack_loop: + str r2, [r0] + add r0, #4 + cmp r0, r1 + bne init_stack_loop + +call_bootblock: + ldr sp, =_estack /* Set up stack pointer */ bl main ENDPROC(_start) |