일반 uboot에서 멈추는 현상에 대해서 문의 드립니다.

제가 사용하고 있는 Uboot 1.3.4에서 아래와 같이 커널을 부팅하다가 멈췄습니다. 그래서

코드를 따라가 봤더니... do_bootm_linux ()함수 부분에서.. theKernel (0, machid, bd->bi_boot_params); 에서

멈췄습니다. 도대체 이 함수에서 왜? 멈췄는지 고수님들의 친절한 답변 부탁드립니다. ㅠㅠ

--------------------------U-BOOT LOG-------------------------------------------------------------

## Booting kernel from Legacy Image at 22000000 ...
Image Name: linux-2.6
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1498916 Bytes = 1.4 MB
Load Address: 20008000
Entry Point: 20008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK

Starting kernel ...

---------------------------------------do_bootm_linux()함수---------------------------------------------------

void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
bootm_headers_t *images)
{
ulong initrd_start, initrd_end;
ulong ep = 0;
bd_t *bd = gd->bd;
char *s;
int machid = bd->bi_arch_number;
void (*theKernel)(int zero, int arch, uint params);
int ret;

#ifdef CONFIG_CMDLINE_TAG
char *commandline = getenv ("bootargs");
#endif

/* find kernel entry point */
if (images->legacy_hdr_valid) {
ep = image_get_ep (&images->legacy_hdr_os_copy);
#if defined(CONFIG_FIT)
} else if (images->fit_uname_os) {
ret = fit_image_get_entry (images->fit_hdr_os,
images->fit_noffset_os, &ep);
if (ret) {
puts ("Can't get entry point property!\n");
goto error;
}
#endif
} else {
puts ("Could not find kernel entry point!\n");
goto error;
}
theKernel = (void (*)(int, int, uint))ep;

s = getenv ("machid");
if (s) {
machid = simple_strtoul (s, NULL, 16);
printf ("Using machid 0x%x from environment\n", machid);
}

ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_ARM,
&initrd_start, &initrd_end);
if (ret)
goto error;

show_boot_progress (15);

debug ("## Transferring control to Linux (at address %08lx) ...\n",
(ulong) theKernel);

#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
defined (CONFIG_CMDLINE_TAG) || \
defined (CONFIG_INITRD_TAG) || \
defined (CONFIG_SERIAL_TAG) || \
defined (CONFIG_REVISION_TAG) || \
defined (CONFIG_LCD) || \
defined (CONFIG_VFD)
setup_start_tag (bd);
#ifdef CONFIG_SERIAL_TAG
setup_serial_tag (&params);
#endif
#ifdef CONFIG_REVISION_TAG
setup_revision_tag (&params);
#endif
#ifdef CONFIG_SETUP_MEMORY_TAGS
setup_memory_tags (bd);
#endif
#ifdef CONFIG_CMDLINE_TAG
setup_commandline_tag (bd, commandline);
#endif
#ifdef CONFIG_INITRD_TAG
if (initrd_start && initrd_end)
setup_initrd_tag (bd, initrd_start, initrd_end);
#endif
#if defined (CONFIG_VFD) || defined (CONFIG_LCD)
setup_videolfb_tag ((gd_t *) gd);
#endif
setup_end_tag (bd);
#endif

/* we assume that the kernel is in place */
printf ("\nStarting kernel ...\n\n");

#ifdef CONFIG_USB_DEVICE
{
extern void udc_disconnect (void);
udc_disconnect ();
}
#endif

cleanup_before_linux ();

theKernel (0, machid, bd->bi_boot_params);

/* does not return */
return;

error:

do_reset (cmdtp, flag, argc, argv);
return;
}