[U-Boot-Users] HELP ABOUT PORTING U-BOOT-1.1.4 TO INTEL PXA255 BOARD

12 Jun 2006


      hi,u-boot-users
I am trying to port u-boot-1.1.4 to my board,But i meet some problems.
Main resources of the board:
    	CPU : INTEL PXA255 400MHZ
      FLASH : INTEL TE28F128J3C150 32M
      SDRAM : SAMSUNG 64M
Problem description :	
    According to the Lubbock developing board and the manual of my board , i have modified some files of uboot and compiled correctly(u-boot.bin is about 108K).
    Because i have no any hardware emulator, so i write a simple program to trace the uboot running, i find it stop in board_init() function(/u-boot-1.1.4/board/xhyper255/xhyper255.c).
int board_init (void)
{
    DECLARE_GLOBAL_DATA_PTR;
/* memory and cpu-speed are setup before relocation */
    /* so we do _nothing_ here */
/* arch number of cerf PXA Board */
    gd->bd->bi_arch_number = MACH_TYPE_XHYPER255;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~It stops here!!!!  
    		
    /* adress of boot parameters */
    gd->bd->bi_boot_params = 0xa0000100;
return(0);
}
The simple program writes as follows:
asm("mov r11,#0x08300000;\
    mov r0,#0x0F;\
    strh r0,[r11];\
        \
    ldr r1,=0x40A00010;\
    ldr r2,=0x40A0000C;\
    mov r0,#0x0;\
    str r0,[r1];\
    nop;\
    nop;\
    nop;\
    nop;\
    nop;\
    nop;\
    nop;\
     	mov r0,#0x780000;\
    str r0,[r2];\
        \
      	ldr r1,=0x40A0001C;\
    mov r0,#0x8;\
    str r0,[r1];\
    \
delay1:;\
    ldr r10,=0x40A00014;\
    ldr r0,[r10];\
    tst r0,#0x8;\
    beq delay1;\     	ldr r11,=0x40A0001C;\
    ldr r4,[r11];\
    and r4,r4,#0x07;\
    str r4,[r11];\ 
        \
    str r0,[r10];\
        \
    ldr r1,=0x40A00010;\
    ldr r2,=0x40A0000C;\
    mov r0,#0x0;\
    str r0,[r1];\
    nop;\
    nop;\
    nop;\
    nop;\
    nop;\
    nop;\
    nop;\
    mov r0,#0x780000;\
    str r0,[r2];\
        \
      	ldr r1,=0x40A0001C;\
    mov r0,#0x8;\
    str r0,[r1];\
    \
delay2:;\
    ldr r10,=0x40A00014;\
    ldr r0,[r10];\
    tst r0,#0x8;\
    beq delay2;\
        \
     	ldr r11,=0x40A0001C;\
    ldr r4,[r11];\
    and r4,r4,#0x07;\
    str r4,[r11];\
        \
    str r0,[r10]");
Appreciate any help.
THANKS
Paradise
　　　　　　　　scut.paradise@gmail.com
　　　　　　　　　　2006-06-08