2021-08-13 20:40:53 +08:00
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#include <asm/asm.h>
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#include <asm/regdef.h>
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#include <cpu_cde.h>
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2021-08-14 20:18:43 +08:00
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.set noreorder
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.section .text.init
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.globl _init
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_init:
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lui t2, 0x0040
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mtc0 t2, c0_status # turn off timer interrupt
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mtc0 zero, c0_cause # clear cause
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la sp, _stack # setup stack
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la gp, _gp # setup small data
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2021-08-13 20:40:53 +08:00
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2021-08-14 20:18:43 +08:00
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# Copy text to a000_0000 -> 8000_0000
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la t0, _text_code_begin
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la t1, _text_code_end
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li t2, 0xa0000000
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or t0, t0, t2
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or t1, t1, t2
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li t2, 0xbfc00000
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or t2, t2, t0
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copy:
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lw t3, 0(t2)
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addiu t2, t2, 4
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sw t3, 0(t0)
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addiu t0, t0, 4
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bne t0, t1, copy
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nop
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2021-08-13 20:40:53 +08:00
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2021-08-14 20:18:43 +08:00
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lui k0, %hi(main)
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addiu k0, %lo(main)
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jr k0
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nop
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2021-08-13 20:40:53 +08:00
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2021-08-14 20:18:43 +08:00
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.section .text.exception
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_EXCEPTION:
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b _EXCEPTION
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nop
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