54 lines
1,001 B
ArmAsm
54 lines
1,001 B
ArmAsm
.set noreorder # If we're writing assembly, why would we want this?
|
|
|
|
.section .text.startup
|
|
|
|
.equ getBufferInternal, 0x262360
|
|
.equ payload, (0x2000000 - 0x800) # End of RAM
|
|
|
|
.global _start
|
|
_start:
|
|
#la $a0, 0x7f
|
|
#la $v1, 0x01
|
|
#syscall 0x01 # ResetEE
|
|
|
|
#la $a0, relo
|
|
la $a0, load
|
|
la $a1, 0
|
|
la $a2, 0
|
|
la $a3, 0
|
|
|
|
.global ExecPS2
|
|
ExecPS2:
|
|
la $v1, 7
|
|
syscall 7 # ExecPS2
|
|
|
|
load:
|
|
la $a0, 0
|
|
la $a1, 0 # 0 = VIDEO_TS.IFO, 1 = VTS_01_0.IFO
|
|
la $a2, 0x3000 / 0x800 # lba offset in file
|
|
la $a3, payload # Destination
|
|
la $t0, 0x800 / 0x800 # Count
|
|
la $t1, 0
|
|
la $v0, getBufferInternal
|
|
jalr $v0
|
|
nop
|
|
|
|
#relo:
|
|
# Relocate payload to end of RAM
|
|
# la $a0, (0x2000000 - 1024)
|
|
# la $a1, payload
|
|
# la $a2, 2048
|
|
# la $v0, memcpy
|
|
# jalr $v0
|
|
|
|
boot:
|
|
la $v1, 0x64; la $a0, 0; syscall 0x64 # FlushCache data writeback
|
|
la $v1, 0x64; la $a0, 2; syscall 0x64 # FlushCache instruction invalidate
|
|
|
|
# Point stack to end of scratchpad RAM
|
|
la $sp, 0x70004000
|
|
|
|
# Execute from relocated place
|
|
la $v0, ENTRY
|
|
j $v0
|
|
nop
|