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https://github.com/Polprzewodnikowy/N64FlashcartMenu.git
synced 2025-02-09 06:53:27 +01:00
94 lines
1.7 KiB
ArmAsm
94 lines
1.7 KiB
ArmAsm
#define IPL3_ENTRY 0xA4000040
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#define REBOOT_ADDRESS 0xA4001000
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#define STACK_ADDRESS 0xA4001FF0
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#define RI_ADDRESS 0xA4700000
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#define RI_SELECT 0x0C
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#define RI_REFRESH 0x10
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.set noat
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.section .text.reboot, "ax", %progbits
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reboot_start:
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.global reboot_start
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# NOTE: CIC x105 requirement
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ipl2:
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.set noreorder
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lui $t5, 0xBFC0
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1:
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lw $t0, 0x7FC($t5)
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addiu $t5, $t5, 0x7C0
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andi $t0, $t0, 0x80
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bnel $t0, $zero, 1b
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lui $t5, 0xBFC0
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lw $t0, 0x24($t5)
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lui $t3, 0xB000
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.set reorder
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reboot_entry:
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.set reboot, REBOOT_ADDRESS + (. - reboot_start)
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.global reboot
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li $sp, STACK_ADDRESS
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reset_rdram:
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bnez $s5, reset_rdram_skip
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li $t0, RI_ADDRESS
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sw $zero, RI_REFRESH($t0)
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sw $zero, RI_SELECT($t0)
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reset_rdram_skip:
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detect_console_region:
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li $t0, 1
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beq $s4, $zero, pal_console
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beq $s4, $t0, ntsc_console
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b mpal_console
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pal_console:
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li $ra, 0xA4001554
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b prepare_registers
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ntsc_console:
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li $ra, 0xA4001550
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b prepare_registers
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mpal_console:
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li $ra, 0xA4001554
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prepare_registers:
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move $at, $zero
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move $v0, $zero
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move $v1, $zero
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move $a0, $zero
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move $a1, $zero
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move $a2, $zero
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move $a3, $zero
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move $t0, $zero
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move $t1, $zero
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li $t2, 0x40
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move $t4, $zero
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move $t5, $zero
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move $t6, $zero
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move $t7, $zero
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move $s0, $zero
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move $s1, $zero
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move $s2, $zero
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move $t8, $zero
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move $t9, $zero
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move $k0, $zero
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move $k1, $zero
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move $gp, $zero
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move $fp, $zero
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run_ipl3:
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li $t3, IPL3_ENTRY
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jr $t3
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.set reboot_size, (. - reboot_start)
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.global reboot_size
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