Linux-world-2012-January->16(mini2440 uboot201103 系统移植)->3(成功修正 machine ID problem!)-3

Error: unrecognized/unsupported machine ID (r1 = 0x33f60264).



解决方法一(完全可以，Kernel入板，成功修正 machine ID problem!)

========================================================

Linux内核启动时出现：bad machine ID，原因大致是u-boot传递给内核的machine ID错误，可以手动在内核源代码中添加machine ID.

解决方法：

在u-boot命令行中输入bdinfo

查看板卡信息，我的输出如下:

[ ~ljh@GDLC ]# bdinfo

arch_number = 0x000000C1

env_t = 0x00000000

boot_params = 0x30000100

DRAM bank = 0x00000000

-> start = 0x30000000

-> size = 0x04000000

ethaddr = 08:00:3E:26:0A:5B

ip_addr = 10.1.8.245

baudrate = 115200 bps

修改内核的arch/arm/kernel/head.S，直接将s3c2410的参数赋给内核

# cd linux-2.6.19

# vi arch/arm/kernel/head.S +72

----------------------------------------------

70 __INIT

71 .type stext, %function

72 ENTRY(stext)

/********* add here *********/

mov r0, #0

mov r1, #0xc1

ldr r2, =0x30000100

/********* end add *********/

73 msr cpsr_c, #PSR_F_BIT | PSR_I_BIT | SVC_MODE @ ensure svc mode

74 @ and irqs disabled

解决方法二(我没找到对应的)

========================================================

修改u-boot，填写ID；

# vi common/cmd_boot.c

----------------------------------------------

31 #if defined(CONFIG_I386)

32 DECLARE_GLOBAL_DATA_PTR;

33 #endif

====>

31 //#if defined(CONFIG_I386)

32 DECLARE_GLOBAL_DATA_PTR;

33 //#endif

...

60 #if !defined(CONFIG_NIOS)

/************** add here ******************/

if(argc==2)

rc = ((ulong (*)(int, char *[]))addr) (0, gd->bd->bi_arch_number);

else

/*************** add end *****************/

61 rc = ((ulong (*)(int, char *[]))addr) (--argc, &argv[1]);

62 #else

63 /*

64 * Nios function pointers are address >> 1

65 */

66 rc = ((ulong (*)(int, char *[]))(addr>>1)) (--argc, &argv[1]);

67 #endif