diff options
Diffstat (limited to 'lib_i386/i386_linux.c')
-rw-r--r-- | lib_i386/i386_linux.c | 59 |
1 files changed, 29 insertions, 30 deletions
diff --git a/lib_i386/i386_linux.c b/lib_i386/i386_linux.c index 5a596ff..e5d8eea 100644 --- a/lib_i386/i386_linux.c +++ b/lib_i386/i386_linux.c @@ -23,12 +23,13 @@ #include <common.h> #include <command.h> -#include <cmd_boot.h> #include <image.h> #include <zlib.h> #include <asm/byteorder.h> #include <asm/zimage.h> +/*cmd_boot.c*/ +extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); extern image_header_t header; /* from cmd_bootm.c */ @@ -39,7 +40,7 @@ image_header_t *fake_header(image_header_t *hdr, void *ptr, int size) if (NULL != fake_zimage_header(hdr, ptr, size)) { return hdr; } - + return NULL; } @@ -48,47 +49,47 @@ void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ulong addr, ulong *len_ptr, int verify) { void *base_ptr; - + ulong len = 0, checksum; ulong initrd_start, initrd_end; ulong data; image_header_t *hdr = &header; - + /* * Check if there is an initrd image */ if (argc >= 3) { addr = simple_strtoul(argv[2], NULL, 16); - + printf ("## Loading Ramdisk Image at %08lx ...\n", addr); - + /* Copy header so we can blank CRC field for re-calculation */ memcpy (&header, (char *)addr, sizeof(image_header_t)); - + if (ntohl(hdr->ih_magic) != IH_MAGIC) { printf ("Bad Magic Number\n"); do_reset (cmdtp, flag, argc, argv); } - + data = (ulong)&header; len = sizeof(image_header_t); - + checksum = ntohl(hdr->ih_hcrc); hdr->ih_hcrc = 0; - + if (crc32 (0, (char *)data, len) != checksum) { printf ("Bad Header Checksum\n"); do_reset (cmdtp, flag, argc, argv); } - + print_image_hdr (hdr); - + data = addr + sizeof(image_header_t); len = ntohl(hdr->ih_size); - + if (verify) { ulong csum = 0; - + printf (" Verifying Checksum ... "); csum = crc32 (0, (char *)data, len); if (csum != ntohl(hdr->ih_dcrc)) { @@ -97,21 +98,21 @@ void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], } printf ("OK\n"); } - + if ((hdr->ih_os != IH_OS_LINUX) || (hdr->ih_arch != IH_CPU_I386) || (hdr->ih_type != IH_TYPE_RAMDISK) ) { printf ("No Linux i386 Ramdisk Image\n"); do_reset (cmdtp, flag, argc, argv); } - + /* * Now check if we have a multifile image */ } else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1])) { ulong tail = ntohl(len_ptr[0]) % 4; int i; - + /* skip kernel length and terminator */ data = (ulong)(&len_ptr[2]); /* skip any additional image length fields */ @@ -122,22 +123,22 @@ void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], if (tail) { data += 4 - tail; } - + len = ntohl(len_ptr[1]); - + } else { /* * no initrd image */ data = 0; } - + #ifdef DEBUG if (!data) { printf ("No initrd\n"); } #endif - + if (data) { initrd_start = data; initrd_end = initrd_start + len; @@ -149,26 +150,24 @@ void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], initrd_start = 0; initrd_end = 0; } - - base_ptr = load_zimage((void*)addr + sizeof(image_header_t), ntohl(hdr->ih_size), + + base_ptr = load_zimage((void*)addr + sizeof(image_header_t), ntohl(hdr->ih_size), initrd_start, initrd_end-initrd_start, 0); if (NULL == base_ptr) { printf ("## Kernel loading failed ...\n"); do_reset(cmdtp, flag, argc, argv); - + } - + #ifdef DEBUG printf ("## Transferring control to Linux (at address %08x) ...\n", (u32)base_ptr); #endif - + /* we assume that the kernel is in place */ printf("\nStarting kernel ...\n\n"); - - boot_zimage(base_ptr); - -} + boot_zimage(base_ptr); +} |