This function is far too long. Before trying to remove #ifdefs, split out the code that deals with selecting the FDT into a separate function.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v1)
common/image-fdt.c | 227 +++++++++++++++++++++++++-------------------- 1 file changed, 127 insertions(+), 100 deletions(-)
diff --git a/common/image-fdt.c b/common/image-fdt.c index 524adbd1339..53976e39796 100644 --- a/common/image-fdt.c +++ b/common/image-fdt.c @@ -245,53 +245,29 @@ error: }
/** - * boot_get_fdt - main fdt handling routine - * @argc: command argument count - * @argv: command argument list - * @arch: architecture (IH_ARCH_...) - * @images: pointer to the bootm images structure - * @of_flat_tree: pointer to a char* variable, will hold fdt start address - * @of_size: pointer to a ulong variable, will hold fdt length + * select_fdt() - Select and locate the FDT to use * - * boot_get_fdt() is responsible for finding a valid flat device tree image. - * Curently supported are the following ramdisk sources: - * - multicomponent kernel/ramdisk image, - * - commandline provided address of decicated ramdisk image. - * - * returns: - * 0, if fdt image was found and valid, or skipped - * of_flat_tree and of_size are set to fdt start address and length if - * fdt image is found and valid - * - * 1, if fdt image is found but corrupted - * of_flat_tree and of_size are set to 0 if no fdt exists + * @images: pointer to the bootm images structure + * @select: name of FDT to select, or NULL for any + * @arch: expected FDT architecture + * @fdt_addrp: pointer to a ulong variable, will hold FDT pointer + * @return 0 if OK, -ENOPKG if no FDT (but an error should not be reported), + * other -ve value on other error */ -int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch, - bootm_headers_t *images, char **of_flat_tree, ulong *of_size) -{ - ulong img_addr; - ulong fdt_addr; - char *fdt_blob = NULL; - void *buf; - const char *select = NULL;
- *of_flat_tree = NULL; - *of_size = 0; - - img_addr = (argc == 0) ? image_load_addr : - simple_strtoul(argv[0], NULL, 16); - buf = map_sysmem(img_addr, 0); +static int select_fdt(bootm_headers_t *images, const char *select, u8 arch, + ulong *fdt_addrp) +{ + const char *buf; + ulong fdt_addr;
- if (argc > 2) - select = argv[2]; - if (select || genimg_has_config(images)) { #if CONFIG_IS_ENABLED(FIT) - const char *fit_uname_config = images->fit_uname_cfg; - const char *fit_uname_fdt = NULL; - ulong default_addr; - int fdt_noffset; + const char *fit_uname_config = images->fit_uname_cfg; + const char *fit_uname_fdt = NULL; + ulong default_addr; + int fdt_noffset;
- if (select) { + if (select) { /* * If the FDT blob comes from the FIT image and the * FIT image address is omitted in the command line @@ -305,48 +281,47 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch, else default_addr = image_load_addr;
- if (fit_parse_conf(select, default_addr, - &fdt_addr, &fit_uname_config)) { + if (fit_parse_conf(select, default_addr, &fdt_addr, + &fit_uname_config)) { debug("* fdt: config '%s' from image at 0x%08lx\n", fit_uname_config, fdt_addr); - } else if (fit_parse_subimage(select, default_addr, - &fdt_addr, &fit_uname_fdt)) { + } else if (fit_parse_subimage(select, default_addr, &fdt_addr, + &fit_uname_fdt)) { debug("* fdt: subimage '%s' from image at 0x%08lx\n", fit_uname_fdt, fdt_addr); } else #endif - { - fdt_addr = simple_strtoul(select, NULL, 16); - debug("* fdt: cmdline image address = 0x%08lx\n", - fdt_addr); - } -#if CONFIG_IS_ENABLED(FIT) - } else { - /* use FIT configuration provided in first bootm - * command argument - */ - fdt_addr = map_to_sysmem(images->fit_hdr_os); - fdt_noffset = fit_get_node_from_config(images, - FIT_FDT_PROP, - fdt_addr); - if (fdt_noffset == -ENOENT) - return 0; - else if (fdt_noffset < 0) - return 1; + { + fdt_addr = simple_strtoul(select, NULL, 16); + debug("* fdt: cmdline image address = 0x%08lx\n", + fdt_addr); } -#endif - debug("## Checking for 'FDT'/'FDT Image' at %08lx\n", - fdt_addr); - - /* - * Check if there is an FDT image at the - * address provided in the second bootm argument - * check image type, for FIT images get a FIT node. +#if CONFIG_IS_ENABLED(FIT) + } else { + /* use FIT configuration provided in first bootm + * command argument */ - buf = map_sysmem(fdt_addr, 0); - switch (genimg_get_format(buf)) { + fdt_addr = map_to_sysmem(images->fit_hdr_os); + fdt_noffset = fit_get_node_from_config(images, FIT_FDT_PROP, + fdt_addr); + if (fdt_noffset == -ENOENT) + return -ENOPKG; + else if (fdt_noffset < 0) + return fdt_noffset; + } +#endif + debug("## Checking for 'FDT'/'FDT Image' at %08lx\n", + fdt_addr); + + /* + * Check if there is an FDT image at the + * address provided in the second bootm argument + * check image type, for FIT images get a FIT node. + */ + buf = map_sysmem(fdt_addr, 0); + switch (genimg_get_format(buf)) { #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT) - case IMAGE_FORMAT_LEGACY: { + case IMAGE_FORMAT_LEGACY: { const image_header_t *fdt_hdr; ulong load, load_end; ulong image_start, image_data, image_end; @@ -356,7 +331,7 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch, fdt_addr); fdt_hdr = image_get_fdt(fdt_addr); if (!fdt_hdr) - goto no_fdt; + return -ENOPKG;
/* * move image data to the load address, @@ -377,7 +352,7 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch,
if ((load < image_end) && (load_end > image_start)) { fdt_error("fdt overwritten"); - goto error; + return -EFAULT; }
debug(" Loading FDT from 0x%08lx to 0x%08lx\n", @@ -391,24 +366,24 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch, break; } #endif - case IMAGE_FORMAT_FIT: - /* - * This case will catch both: new uImage format - * (libfdt based) and raw FDT blob (also libfdt - * based). - */ + case IMAGE_FORMAT_FIT: + /* + * This case will catch both: new uImage format + * (libfdt based) and raw FDT blob (also libfdt + * based). + */ #if CONFIG_IS_ENABLED(FIT) /* check FDT blob vs FIT blob */ if (!fit_check_format(buf, IMAGE_SIZE_INVAL)) { ulong load, len;
- fdt_noffset = boot_get_fdt_fit(images, - fdt_addr, &fit_uname_fdt, - &fit_uname_config, - arch, &load, &len); + fdt_noffset = boot_get_fdt_fit(images, fdt_addr, + &fit_uname_fdt, + &fit_uname_config, + arch, &load, &len);
if (fdt_noffset < 0) - goto error; + return -ENOENT;
images->fit_hdr_fdt = map_sysmem(fdt_addr, 0); images->fit_uname_fdt = fit_uname_fdt; @@ -416,22 +391,74 @@ int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch, fdt_addr = load;
break; - } else + } else #endif - { - /* - * FDT blob - */ - debug("* fdt: raw FDT blob\n"); - printf("## Flattened Device Tree blob at %08lx\n", - (long)fdt_addr); - } - break; - default: - puts("ERROR: Did not find a cmdline Flattened Device Tree\n"); - goto error; + { + /* + * FDT blob + */ + debug("* fdt: raw FDT blob\n"); + printf("## Flattened Device Tree blob at %08lx\n", + (long)fdt_addr); } + break; + default: + puts("ERROR: Did not find a cmdline Flattened Device Tree\n"); + return -ENOENT; + } + *fdt_addrp = fdt_addr; + + return 0; +}
+/** + * boot_get_fdt - main fdt handling routine + * @argc: command argument count + * @argv: command argument list + * @arch: architecture (IH_ARCH_...) + * @images: pointer to the bootm images structure + * @of_flat_tree: pointer to a char* variable, will hold fdt start address + * @of_size: pointer to a ulong variable, will hold fdt length + * + * boot_get_fdt() is responsible for finding a valid flat device tree image. + * Currently supported are the following ramdisk sources: + * - multicomponent kernel/ramdisk image, + * - commandline provided address of decicated ramdisk image. + * + * returns: + * 0, if fdt image was found and valid, or skipped + * of_flat_tree and of_size are set to fdt start address and length if + * fdt image is found and valid + * + * 1, if fdt image is found but corrupted + * of_flat_tree and of_size are set to 0 if no fdt exists + */ +int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch, + bootm_headers_t *images, char **of_flat_tree, ulong *of_size) +{ + ulong img_addr; + ulong fdt_addr; + char *fdt_blob = NULL; + void *buf; + const char *select = NULL; + + *of_flat_tree = NULL; + *of_size = 0; + + img_addr = (argc == 0) ? image_load_addr : + simple_strtoul(argv[0], NULL, 16); + buf = map_sysmem(img_addr, 0); + + if (argc > 2) + select = argv[2]; + if (select || genimg_has_config(images)) { + int ret; + + ret = select_fdt(images, select, arch, &fdt_addr); + if (ret == -ENOPKG) + goto no_fdt; + else if (ret) + return 1; printf(" Booting using the fdt blob at %#08lx\n", fdt_addr); fdt_blob = map_sysmem(fdt_addr, 0); } else if (images->legacy_hdr_valid &&