void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
\nulong addr, ulong *len_ptr, int verify)
\n{
\nulong len = 0, checksum;
\nulong initrd_start, initrd_end;
\nulong data;
\nvoid (*theKernel)(int zero, int arch, uint params);
\nimage_header_t *hdr = &header;
\nbd_t *bd = gd->bd;<\/p>\n
#ifdef CONFIG_CMDLINE_TAG
\nchar *commandline = getenv (“bootargs”);
\n#endif<\/p>\n
theKernel = (void (*)(int, int, uint))ntohl(hdr->ih_ep);<\/p>\n
\/*
\n* Check if there is an initrd image
\n*\/
\nif (argc >= 3) {
\nSHOW_BOOT_PROGRESS (9);<\/p>\n
addr = simple_strtoul (argv[2], NULL, 16);<\/p>\n
printf (“## Loading Ramdisk Image at %08lx …\\n”, addr);<\/p>\n
\/* Copy header so we can blank CRC field for re-calculation *\/
\n#ifdef CONFIG_HAS_DATAFLASH
\nif (addr_dataflash (addr)) {
\nread_dataflash (addr, sizeof (image_header_t),
\n(char *) &header);
\n} else
\n#endif
\nmemcpy (&header, (char *) addr,
\nsizeof (image_header_t));<\/p>\n
if (ntohl (hdr->ih_magic) != IH_MAGIC) {
\nprintf (“Bad Magic Number\\n”);
\nSHOW_BOOT_PROGRESS (-10);
\ndo_reset (cmdtp, flag, argc, argv);
\n}<\/p>\n
data = (ulong) & header;
\nlen = sizeof (image_header_t);<\/p>\n
checksum = ntohl (hdr->ih_hcrc);
\nhdr->ih_hcrc = 0;<\/p>\n
if (crc32 (0, (unsigned char *) data, len) != checksum) {
\nprintf (“Bad Header Checksum\\n”);
\nSHOW_BOOT_PROGRESS (-11);
\ndo_reset (cmdtp, flag, argc, argv);
\n}<\/p>\n
SHOW_BOOT_PROGRESS (10);<\/p>\n
print_image_hdr (hdr);<\/p>\n
data = addr + sizeof (image_header_t);
\nlen = ntohl (hdr->ih_size);<\/p>\n
#ifdef CONFIG_HAS_DATAFLASH
\nif (addr_dataflash (addr)) {
\nread_dataflash (data, len, (char *) CFG_LOAD_ADDR);
\ndata = CFG_LOAD_ADDR;
\n}
\n#endif<\/p>\n
if (verify) {
\nulong csum = 0;<\/p>\n
printf (”\u00a0\u00a0 Verifying Checksum … “);
\ncsum = crc32 (0, (unsigned char *) data, len);
\nif (csum != ntohl (hdr->ih_dcrc)) {
\nprintf (“Bad Data CRC\\n”);
\nSHOW_BOOT_PROGRESS (-12);
\ndo_reset (cmdtp, flag, argc, argv);
\n}
\nprintf (“OK\\n”);
\n}<\/p>\n
SHOW_BOOT_PROGRESS (11);<\/p>\n
if ((hdr->ih_os != IH_OS_LINUX) ||
\n(hdr->ih_arch != IH_CPU_ARM) ||
\n(hdr->ih_type != IH_TYPE_RAMDISK)) {
\nprintf (“No Linux ARM Ramdisk Image\\n”);
\nSHOW_BOOT_PROGRESS (-13);
\ndo_reset (cmdtp, flag, argc, argv);
\n}<\/p>\n
#if defined(CONFIG_B2) || defined(CONFIG_EVB4510) || defined(CONFIG_ARMADILLO)
\n\/*
\n*we need to copy the ramdisk to SRAM to let Linux boot
\n*\/
\nmemmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);
\ndata = ntohl(hdr->ih_load);
\n#endif \/* CONFIG_B2 || CONFIG_EVB4510 *\/<\/p>\n
\/*
\n* Now check if we have a multifile image
\n*\/
\n} else if ((hdr->ih_type == IH_TYPE_MULTI) && (len_ptr[1])) {
\nulong tail = ntohl (len_ptr[0]) % 4;
\nint i;<\/p>\n
SHOW_BOOT_PROGRESS (13);<\/p>\n
\/* skip kernel length and terminator *\/
\ndata = (ulong) (&len_ptr[2]);
\n\/* skip any additional image length fields *\/
\nfor (i = 1; len_ptr[i]; ++i)
\ndata += 4;
\n\/* add kernel length, and align *\/
\ndata += ntohl (len_ptr[0]);
\nif (tail) {
\ndata += 4 – tail;
\n}<\/p>\n
len = ntohl (len_ptr[1]);<\/p>\n
} else {
\n\/*
\n* no initrd image
\n*\/
\nSHOW_BOOT_PROGRESS (14);<\/p>\n
len = data = 0;
\n}<\/p>\n
#ifdef\u00a0\u00a0\u00a0\u00a0 DEBUG
\nif (!data) {
\nprintf (“No initrd\\n”);
\n}
\n#endif<\/p>\n
if (data) {
\ninitrd_start = data;
\ninitrd_end = initrd_start + len;
\n} else {
\ninitrd_start = 0;
\ninitrd_end = 0;
\n}<\/p>\n
SHOW_BOOT_PROGRESS (15);<\/p>\n
debug (“## Transferring control to Linux (at address %08lx) …\\n”,
\n(ulong) theKernel);<\/p>\n
#if defined (CONFIG_SETUP_MEMORY_TAGS) || \\
\ndefined (CONFIG_CMDLINE_TAG) || \\
\ndefined (CONFIG_INITRD_TAG) || \\
\ndefined (CONFIG_SERIAL_TAG) || \\
\ndefined (CONFIG_REVISION_TAG) || \\
\ndefined (CONFIG_LCD) || \\
\ndefined (CONFIG_VFD)
\nsetup_start_tag (bd);
\n#ifdef CONFIG_SERIAL_TAG
\nsetup_serial_tag (¶ms);
\n#endif
\n#ifdef CONFIG_REVISION_TAG
\nsetup_revision_tag (¶ms);
\n#endif
\n#ifdef CONFIG_SETUP_MEMORY_TAGS
\nsetup_memory_tags (bd);
\n#endif
\n#ifdef CONFIG_CMDLINE_TAG
\nsetup_commandline_tag (bd, commandline);
\n#endif
\n#ifdef CONFIG_INITRD_TAG
\nif (initrd_start && initrd_end)
\nsetup_initrd_tag (bd, initrd_start, initrd_end);
\n#endif
\n#if defined (CONFIG_VFD) || defined (CONFIG_LCD)
\nsetup_videolfb_tag ((gd_t *) gd);
\n#endif
\nsetup_end_tag (bd);
\n#endif<\/p>\n
\/* we assume that the kernel is in place *\/
\nprintf (“\\nStarting kernel …\\n\\n”);<\/p>\n
#ifdef CONFIG_USB_DEVICE
\n{
\nextern void udc_disconnect (void);
\nudc_disconnect ();
\n}
\n#endif<\/p>\n
cleanup_before_linux ();<\/p>\n
theKernel (0, bd->bi_arch_number, bd->bi_boot_params); \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/*\u6b64\u5904\u5f00\u59cb\u8fd0\u884c\u5185\u6838\u7684\u7b2c\u4e00\u4e2a\u51fd\u6570\uff0c\u5c31\u662f\u54ea\u4e2alinux\u5185\u6838\u7684head.S\u91cc\u9762\u5b9a\u4e49\u7684start\u6bb5\u7684\u7b2c\u4e00\u6761\u6307\u4ee4\u3002\u5176\u53c2\u6570\u4e3ar0\uff1a\u56fa\u5b9a0\uff0cr1\uff1a\u552f\u4e00\u6807\u8bb0\u7684\u677f\u67b6\u6784\u53f7\uff0cr2\uff1a\u677f\u542f\u52a8\u53c2\u6570\uff0c\u8fd9\u4e24\u4e2a\u53c2\u6570\u5b9a\u4e49\u5728Mini6410.c\u7684board_init\u51fd\u6570\u4e2d\u3002*\/
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int ar …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[239,48,49],"class_list":["post-305","post","type-post","status-publish","format-standard","hentry","category-6","tag-armlinux-c","tag-mini6410","tag-uboot"],"views":1486,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=305"}],"version-history":[{"count":1,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/305\/revisions"}],"predecessor-version":[{"id":306,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/305\/revisions\/306"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=305"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}