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.section ".text.kernel"
.include "macros.inc"
.globl kernel_main
kernel_main:
///https://wiki.osdev.org/ARM_Paging
// Query the ID_MMFR0 register
mrc p15, 0, r0, c0, c1, 4
bl sysinit
assign_ctask testf, 2
assign_ctask testf, 1
assign_ctask testf, 2
assign_ctask testf, 3
assign_ctask testf, 1
// Intentional undefined instruction
// .word 0xf7f0a000
cpsie aif, #0x10
svc #2 // Start scheduling!
1:
wfe
b 1b
testf:
push {lr}
cmp r0, #2
blo 1f
beq 2f
bgt 3f
1:
ldr r0, =t1
bl uart_print
pop {pc}
2:
ldr r0, =t2
bl uart_print
pop {pc}
3:
ldr r0, =t3
bl uart_print
pop {pc}
.section .data
t1: .asciz "C1\n"
t2: .asciz "C2\n"
t3: .asciz "C3\n"
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