47 lines
743 B
ArmAsm
47 lines
743 B
ArmAsm
start:
|
|
b main
|
|
|
|
.text
|
|
.global rom_send
|
|
rom_send:
|
|
mov w1, #0x20000 // size
|
|
mov w0, #0x0 // address
|
|
bl usb_send
|
|
ret
|
|
|
|
.text
|
|
.global usb_send
|
|
usb_send:
|
|
stp x29, x30, [sp,#-48]!
|
|
mov w3, #0x0
|
|
bfxil w3, w1, #0, #24
|
|
mov w1, #0xc12
|
|
mov x29, sp
|
|
stp x19, x20, [sp,#16]
|
|
mov x5, #0xc834
|
|
mov w20, #0x1
|
|
movk x5, #0x1540, lsl #16
|
|
ldr x2, [x29,#40]
|
|
mov x4, #0xc838
|
|
orr w6, w1, w20
|
|
movk x4, #0x1540, lsl #16
|
|
mov x19, #0xc83c
|
|
movk x19, #0x1540, lsl #16
|
|
stp w3, w1, [x2,#8]
|
|
mov w3, #0x406
|
|
stp w0, wzr, [x2]
|
|
mov w0, w20
|
|
ldr x1, [x29,#40]
|
|
strb w6, [x2,#12]
|
|
; mov x2, #0x27c8
|
|
str w1, [x5]
|
|
mov w1, #0x1388
|
|
str wzr, [x4]
|
|
str w3, [x19]
|
|
; blr x2
|
|
mov w0, w20
|
|
ldr w1, [x19]
|
|
ldp x19, x20, [sp,#16]
|
|
ldp x29, x30, [sp],#48
|
|
ret
|