28 lines
400 B
ArmAsm
28 lines
400 B
ArmAsm
.section .text.boot
|
|
.global __start
|
|
.type __start, %function
|
|
|
|
__start:
|
|
//Use core 0 only
|
|
mrs x7, mpidr_el1
|
|
and x7, x7, #3
|
|
cbz x7, __start_master
|
|
0: wfe
|
|
b 0b
|
|
|
|
__start_master:
|
|
//Setup stack pointer
|
|
ldr x2, = __stack_start
|
|
mov sp, x2
|
|
|
|
//Clear BSS
|
|
ldr w0, = __bss_start
|
|
ldr w1, = __bss_size
|
|
1: cbz x1, 2f
|
|
str xzr, [x0], #8
|
|
sub x1, x1, #1
|
|
cbnz x1, 1b
|
|
2:
|
|
bl kernelmain
|
|
b 0b
|