.section .text.start .align 4 .global _start _start: @ Change the stack pointer mov sp, #0x27000000 @ Sets MPU permissions and cache settings ldr r0, =0xFFFF001D @ ffff0000 32k ldr r1, =0x01FF801D @ 01ff8000 32k ldr r2, =0x08000027 @ 08000000 1M ldr r3, =0x10000021 @ 10000000 128k ldr r4, =0x10100025 @ 10100000 512k ldr r5, =0x20000035 @ 20000000 128M ldr r6, =0x2800801B @ 28008000 16k ldr r7, =0x1800002D @ 18000000 8M ldr r8, =0x33333336 ldr r9, =0x60600666 mov r10, #0x25 mov r11, #0x25 mov r12, #0x25 mcr p15, 0, r0, c6, c0, 0 mcr p15, 0, r1, c6, c1, 0 mcr p15, 0, r2, c6, c2, 0 mcr p15, 0, r3, c6, c3, 0 mcr p15, 0, r4, c6, c4, 0 mcr p15, 0, r5, c6, c5, 0 mcr p15, 0, r6, c6, c6, 0 mcr p15, 0, r7, c6, c7, 0 mcr p15, 0, r8, c5, c0, 2 @ Enable data r/w for all regions mcr p15, 0, r9, c5, c0, 3 @ Enable inst read for 0, 1, 2, 5, 7 mcr p15, 0, r10, c3, c0, 0 @ Write bufferable 0, 2, 5 mcr p15, 0, r11, c2, c0, 0 @ Data cacheable 0, 2, 5 mcr p15, 0, r12, c2, c0, 1 @ Inst cacheable 0, 2, 5 @ Enables all the settings we specified above ldr r0, =0x5307D mcr p15, 0, r0, c1, c0, 0 @ cp15 ctl register enable mpu, enable cache and use alt vector table @ Undocumented: Fixes mounting of SDMC ldr r0, =0x10000020 mov r1, #0x340 str r1, [r0] bl main .die: b .die