我也贴一段也是点LED的(S3C6410)。
GPNCON EQU 0x7F008830
GPNDAT EQU 0x7F008834
GPNPUD EQU 0x7F008838
AREA Init,CODE,READONLY
ENTRY
;When Power on, it start at here
reset
;config GPN14 as output
ldr r0,=GPNCON
ldr r1,=0x10000000
str r1,[r0]
;disable pull down/up
ldr r0,=GPNPUD
ldr r1,=0x00000000
str r1,[r0]
ldr r2,=GPNDAT
led_loop
;LED OFF
ldr r1,=0x0
str r1,[r2]
bl delay
;LED ON
ldr r1,=0x4000
str r1,[r2]
bl delay
b led_loop;LED function loop
delay
ldr r0,=0x3ffffff
delay_loop
sub r0,r0,#1
cmp r0,#0x0
bne delay_loop
mov pc,lr
END