35 lines
887 B
Plaintext
35 lines
887 B
Plaintext
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.section .text.start
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.align 4
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.global _start
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_start:
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@ Change the stack pointer
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mov sp, #0x27000000
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@ Give read/write access to all the memory regions
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ldr r5, =0x33333333
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mcr p15, 0, r5, c5, c0, 2 @ write data access
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mcr p15, 0, r5, c5, c0, 3 @ write instruction access
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@ Enable caches
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mrc p15, 0, r4, c1, c0, 0 @ read control register
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orr r4, r4, #(1<<12) @ - instruction cache enable
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orr r4, r4, #(1<<2) @ - data cache enable
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orr r4, r4, #(1<<0) @ - mpu enable
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mcr p15, 0, r4, c1, c0, 0 @ write control register
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@ Flush caches
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mov r5, #0
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mcr p15, 0, r5, c7, c5, 0 @ flush I-cache
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mcr p15, 0, r5, c7, c6, 0 @ flush D-cache
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mcr p15, 0, r5, c7, c10, 4 @ drain write buffer
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@ Fixes mounting of SDMC
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ldr r0, =0x10000020
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mov r1, #0x340
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str r1, [r0]
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bl main
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.die:
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b .die
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