* [U-Boot-Users] HELP ABOUT PORTING U-BOOT-1.1.4 TO INTEL PXA255 BOARD
@ 2006-06-12 1:44 Paradise
0 siblings, 0 replies; 2+ messages in thread
From: Paradise @ 2006-06-12 1:44 UTC (permalink / raw)
To: u-boot
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 at gmail.com
??????????2006-06-08
^ permalink raw reply [flat|nested] 2+ messages in thread* [U-Boot-Users] HELP ABOUT PORTING U-BOOT-1.1.4 TO INTEL PXA255 BOARD
@ 2006-06-08 14:23 Paradise
0 siblings, 0 replies; 2+ messages in thread
From: Paradise @ 2006-06-08 14:23 UTC (permalink / raw)
To: u-boot
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 at gmail.com
??????????2006-06-08
^ permalink raw reply [flat|nested] 2+ messages in thread
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2006-06-08 14:23 Paradise
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