diff options
| -rw-r--r-- | lib_ppc/bootm.c | 174 |
1 files changed, 151 insertions, 23 deletions
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c index ac06b26..60bc04b 100644 --- a/lib_ppc/bootm.c +++ b/lib_ppc/bootm.c @@ -254,20 +254,24 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], * r6: NULL * r7: NULL */ + debug (" Booting using OF flat tree...\n"); (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0); /* does not return */ - } + } else #endif - /* - * Linux Kernel Parameters (passing board info data): - * r3: ptr to board info data - * r4: initrd_start or 0 if no initrd - * r5: initrd_end - unused if r4 is 0 - * r6: Start of command line string - * r7: End of command line string - */ - (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); - /* does not return */ + { + /* + * Linux Kernel Parameters (passing board info data): + * r3: ptr to board info data + * r4: initrd_start or 0 if no initrd + * r5: initrd_end - unused if r4 is 0 + * r6: Start of command line string + * r7: End of command line string + */ + debug (" Booting using board info...\n"); + (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); + /* does not return */ + } return ; error: @@ -353,6 +357,47 @@ static image_header_t *image_get_fdt (ulong fdt_addr) return fdt_hdr; } +/** + * fit_check_fdt - verify FIT format FDT subimage + * @fit_hdr: pointer to the FIT header + * fdt_noffset: FDT subimage node offset within FIT image + * @verify: data CRC verification flag + * + * fit_check_fdt() verifies integrity of the FDT subimage and from + * specified FIT image. + * + * returns: + * 1, on success + * 0, on failure + */ +#if defined(CONFIG_FIT) +static int fit_check_fdt (const void *fit, int fdt_noffset, int verify) +{ + fit_image_print (fit, fdt_noffset, " "); + + if (verify) { + puts (" Verifying Hash Integrity ... "); + if (!fit_image_check_hashes (fit, fdt_noffset)) { + fdt_error ("Bad Data Hash"); + return 0; + } + puts ("OK\n"); + } + + if (!fit_image_check_type (fit, fdt_noffset, IH_TYPE_FLATDT)) { + fdt_error ("Not a FDT image"); + return 0; + } + + if (!fit_image_check_comp (fit, fdt_noffset, IH_COMP_NONE)) { + fdt_error ("FDT image is compressed"); + return 0; + } + + return 1; +} +#endif /* CONFIG_FIT */ + static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], bootm_headers_t *images, char **of_flat_tree, ulong *of_size) { @@ -366,8 +411,15 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], const char *fit_uname_config = NULL; const char *fit_uname_fdt = NULL; ulong default_addr; + int conf_noffset; + int fdt_noffset; + const void *data; + size_t size; #endif + *of_flat_tree = NULL; + *of_size = 0; + if (argc > 3) { #if defined(CONFIG_FIT) /* @@ -398,7 +450,7 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], fdt_addr); } - debug ("## Checking for 'FDT'/'FDT image' at %08lx\n", + debug ("## Checking for 'FDT'/'FDT Image' at %08lx\n", fdt_addr); /* copy from dataflash if needed */ @@ -411,10 +463,8 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], */ switch (genimg_get_format ((void *)fdt_addr)) { case IMAGE_FORMAT_LEGACY: - debug ("* fdt: legacy format image\n"); - /* verify fdt_addr points to a valid image header */ - printf ("## Flattened Device Tree Legacy Image at %08lx\n", + printf ("## Flattened Device Tree from Legacy Image at %08lx\n", fdt_addr); fdt_hdr = image_get_fdt (fdt_addr); if (!fdt_hdr) @@ -434,11 +484,15 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], fdt_error ("fdt overwritten"); goto error; } - memmove ((void *)image_get_load (fdt_hdr), + + debug (" Loading FDT from 0x%08lx to 0x%08lx\n", + image_get_data (fdt_hdr), load_start); + + memmove ((void *)load_start, (void *)image_get_data (fdt_hdr), image_get_data_size (fdt_hdr)); - fdt_blob = (char *)image_get_load (fdt_hdr); + fdt_blob = (char *)load_start; break; case IMAGE_FORMAT_FIT: /* @@ -448,14 +502,90 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], */ #if defined(CONFIG_FIT) /* check FDT blob vs FIT blob */ - if (0) { /* FIXME: call FIT format verification */ + if (fit_check_format ((const void *)fdt_addr)) { /* * FIT image */ fit_hdr = (void *)fdt_addr; - debug ("* fdt: FIT format image\n"); - fit_unsupported_reset ("PPC fdt"); - goto error; + printf ("## Flattened Device Tree from FIT Image at %08lx\n", + fdt_addr); + + if (!fit_uname_fdt) { + /* + * no FDT blob image node unit name, + * try to get config node first. If + * config unit node name is NULL + * fit_conf_get_node() will try to + * find default config node + */ + conf_noffset = fit_conf_get_node (fit_hdr, + fit_uname_config); + if (conf_noffset < 0) + goto error; + + fdt_noffset = fit_conf_get_fdt_node (fit_hdr, + conf_noffset); + fit_uname_fdt = fit_get_name (fit_hdr, + fdt_noffset, NULL); + } else { + /* get FDT component image node offset */ + fdt_noffset = fit_image_get_node (fit_hdr, + fit_uname_fdt); + } + if (fdt_noffset < 0) + goto error; + + printf (" Trying '%s' FDT blob subimage\n", + fit_uname_fdt); + + if (!fit_check_fdt (fit_hdr, fdt_noffset, + images->verify)) + goto error; + + /* get ramdisk image data address and length */ + if (fit_image_get_data (fit_hdr, fdt_noffset, + &data, &size)) { + fdt_error ("Could not find FDT subimage data"); + goto error; + } + + /* verift that image data is a proper FDT blob */ + if (fdt_check_header ((char *)data) != 0) { + fdt_error ("Subimage data is not a FTD"); + goto error; + } + + /* + * move image data to the load address, + * make sure we don't overwrite initial image + */ + image_start = (ulong)fit_hdr; + image_end = fit_get_end (fit_hdr); + + if (fit_image_get_load (fit_hdr, fdt_noffset, + &load_start) == 0) { + load_end = load_start + size; + + if ((load_start < image_end) && + (load_end > image_start)) { + fdt_error ("FDT overwritten"); + goto error; + } + + printf (" Loading FDT from 0x%08lx to 0x%08lx\n", + (ulong)data, load_start); + + memmove ((void *)load_start, + (void *)data, size); + + fdt_blob = (char *)load_start; + } else { + fdt_blob = (char *)data; + } + + images->fit_hdr_fdt = fit_hdr; + images->fit_uname_fdt = fit_uname_fdt; + break; } else #endif { @@ -509,8 +639,6 @@ static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], } } else { debug ("## No Flattened Device Tree\n"); - *of_flat_tree = NULL; - *of_size = 0; return 0; } |