xiangfu wrote:
Andy Green wrote:
| ----i still can't run the C function by add "stack_setup".
Can't help from this description.
i mean if i change
----extern void delay(int time);
to :
----int delay(int time)
----{
---- int i=0;
---- for(i=0;i<time;i++);
---- return 0;
----}
the program not run.the led not blink.
i think this[1] is the problem(I'm not very sure),
in the blink_led program the TEXT_BASE is 0x000000;
so the sp is wrong.
How to resolve this problem.
[1]:
stack_setup:
ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */
sub r0, r0, #CFG_MALLOC_LEN /* malloc
area */
sub r0, r0, #CFG_GBL_DATA_SIZE /*
bdinfo */
sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ)
sub sp, r0, #12 /* leave 3 words for abort-stack */
i change the TEXT_BASE from 0x000000 to 0x33F80000, that is work.
next step i should try to load a program form NAND to RAM.
