mirror of
https://github.com/LNH-team/pico-loader.git
synced 2026-06-02 17:26:48 +02:00
6a97b677a7
- Supercard CF (SUPERCARDCF) - GBA Media Player CF (MPCF) - M3 Adapter CF (M3CF) - Max Media Dock CF (MMCF)
93 lines
1.6 KiB
ArmAsm
93 lines
1.6 KiB
ArmAsm
.cpu arm7tdmi
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.syntax unified
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.thumb
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.section "m3cf_lock_unlock", "ax"
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.equ M3_MODE_ROM, 8
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.equ M3_MODE_MEDIA, 6
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.global m3cf_lockUnlockCard
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.type m3cf_lockUnlockCard, %function
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m3cf_lockUnlockCard:
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cmp r0, #1
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bne unlock
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movs r0, #0x08
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M3_changeMode:
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push {r1-r7, lr}
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@ READ_REG #0x08e00002
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ldr r1, =#0x08e00002
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ldrh r1, [r1]
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adr r1, M3_regs
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@ r2 has #0x08801ffc
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@ r3 has #0x0800104a
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@ r4 has #0x08800612
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@ r5 has #0x08801b66
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@ r6 has #0x0800080e
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@ r7 has #0x09000000
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ldm r1!, {r2-r7}
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@ load 0x08000000
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movs r1, #1
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lsls r1, #27
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@ READ_REG #0x0800000e
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ldrh r1, [r1, #0x0E]
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@ READ_REG #0x08801ffc
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ldrh r1, [r2]
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@ READ_REG #0x0800104a
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ldrh r1, [r3]
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@ READ_REG #0x08800612
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ldrh r1, [r4]
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@ READ_REG #0x08000000
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@ load 0x08000000
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movs r2, #1
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lsls r2, #27
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ldrh r1, [r2]
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@ READ_REG #0x08801b66
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ldrh r1, [r5]
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@ READ_REG #0x08800000 + r0
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@ ldr r1, =#0x08800000
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movs r1, 0x88
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lsls r1, #20
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ldrh r1, [r1, r0]
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@ READ_REG #0x0800080e
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ldrh r1, [r6]
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@ READ_REG #0x08000000
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ldrh r1, [r2]
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cmp r0, M3_MODE_ROM
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beq lastRomRead
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@ READ_REG #0x09000000
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ldrh r1, [r7]
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pop {r1-r7, pc}
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lastRomRead:
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@ READ_REG #0x080001e4
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ldr r1, =#0x080001e4
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ldrh r3, [r1]
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ldrh r3, [r1]
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@ READ_REG #0x08000188
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subs r1, #0x5C
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ldrh r3, [r1]
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ldrh r3, [r1]
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pop {r1-r7, pc}
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unlock:
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movs r0, #0x06
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b M3_changeMode
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.pool
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M3_regs:
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.word 0x08801ffc
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.word 0x0800104a
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.word 0x08800612
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.word 0x08801b66
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.word 0x0800080e
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.word 0x09000000
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