[U-Boot] [PATCH 08/15] bootm: refactor fdt locating and relocation code

Kumar Gala
2008-08-15T13:24:38Z

Move the code that handles finding a device tree blob and relocating
it (if needed) into common code so all arch's have access to it.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
common/cmd_bootm.c | 10 +
common/image.c | 502 ++++++++++++++++++++++++++++++++++++++++++++++++++++
include/image.h | 13 ++
lib_ppc/bootm.c | 492 +--------------------------------------------------
4 files changed, 533 insertions(+), 484 deletions(-)

diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 56236b9..9a745f1 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -258,6 +258,16 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
puts ("Ramdisk image is corrupt\n");
return 1;
}
+
+#if defined(CONFIG_OF_LIBFDT)
+ /* find flattened device tree */
+ ret = boot_get_fdt (flag, argc, argv, &images,
+ &images.ft_addr, &images.ft_len);
+ if (ret) {
+ puts ("Could not find a valid device tree\n");
+ return 1;
+ }
+#endif
}

image_start = (ulong)os_hdr;
diff --git a/common/image.c b/common/image.c
index 6d2ce32..18d667d 100644
--- a/common/image.c
+++ b/common/image.c
@@ -1070,6 +1070,508 @@ error:
return -1;
}

+#ifdef CONFIG_OF_LIBFDT
+static void fdt_error (const char *msg)
+{
+ puts ("ERROR: ");
+ puts (msg);
+ puts (" - must RESET the board to recover.\n");
+}
+
+static image_header_t *image_get_fdt (ulong fdt_addr)
+{
+ image_header_t *fdt_hdr = (image_header_t *)fdt_addr;
+
+ image_print_contents (fdt_hdr);
+
+ puts (" Verifying Checksum ... ");
+ if (!image_check_hcrc (fdt_hdr)) {
+ fdt_error ("fdt header checksum invalid");
+ return NULL;
+ }
+
+ if (!image_check_dcrc (fdt_hdr)) {
+ fdt_error ("fdt checksum invalid");
+ return NULL;
+ }
+ puts ("OK\n");
+
+ if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
+ fdt_error ("uImage is not a fdt");
+ return NULL;
+ }
+ if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
+ fdt_error ("uImage is compressed");
+ return NULL;
+ }
+ if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) {
+ fdt_error ("uImage data is not a fdt");
+ return NULL;
+ }
+ 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 */
+
+#ifndef CFG_FDT_PAD
+#define CFG_FDT_PAD 0x3000
+#endif
+
+/**
+ * boot_relocate_fdt - relocate flat device tree
+ * @lmb: pointer to lmb handle, will be used for memory mgmt
+ * @bootmap_base: base address of the bootmap region
+ * @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_relocate_fdt() determines if the of_flat_tree address is within
+ * the bootmap and if not relocates it into that region
+ *
+ * of_flat_tree and of_size are set to final (after relocation) values
+ *
+ * returns:
+ * 0 - success
+ * 1 - failure
+ */
+int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
+ char **of_flat_tree, ulong *of_size)
+{
+ char *fdt_blob = *of_flat_tree;
+ ulong relocate = 0;
+ ulong of_len = 0;
+
+ /* nothing to do */
+ if (*of_size == 0)
+ return 0;
+
+ if (fdt_check_header (fdt_blob) != 0) {
+ fdt_error ("image is not a fdt");
+ goto error;
+ }
+
+#ifndef CFG_NO_FLASH
+ /* move the blob if it is in flash (set relocate) */
+ if (addr2info ((ulong)fdt_blob) != NULL)
+ relocate = 1;
+#endif
+
+ /*
+ * The blob needs to be inside the boot mapping.
+ */
+ if (fdt_blob < (char *)bootmap_base)
+ relocate = 1;
+
+ if ((fdt_blob + *of_size + CFG_FDT_PAD) >=
+ ((char *)CFG_BOOTMAPSZ + bootmap_base))
+ relocate = 1;
+
+ /* move flattend device tree if needed */
+ if (relocate) {
+ int err;
+ ulong of_start = 0;
+
+ /* position on a 4K boundary before the alloc_current */
+ /* Pad the FDT by a specified amount */
+ of_len = *of_size + CFG_FDT_PAD;
+ of_start = (unsigned long)lmb_alloc_base(lmb, of_len, 0x1000,
+ (CFG_BOOTMAPSZ + bootmap_base));
+
+ if (of_start == 0) {
+ puts("device tree - allocation error\n");
+ goto error;
+ }
+
+ debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
+ (ulong)fdt_blob, (ulong)fdt_blob + *of_size - 1,
+ of_len, of_len);
+
+ printf (" Loading Device Tree to %08lx, end %08lx ... ",
+ of_start, of_start + of_len - 1);
+
+ err = fdt_open_into (fdt_blob, (void *)of_start, of_len);
+ if (err != 0) {
+ fdt_error ("fdt move failed");
+ goto error;
+ }
+ puts ("OK\n");
+
+ *of_flat_tree = (char *)of_start;
+ *of_size = of_len;
+ } else {
+ *of_flat_tree = fdt_blob;
+ of_len = (CFG_BOOTMAPSZ + bootmap_base) - (ulong)fdt_blob;
+ lmb_reserve(lmb, (ulong)fdt_blob, of_len);
+ fdt_set_totalsize(*of_flat_tree, of_len);
+
+ *of_size = of_len;
+ }
+
+ return 0;
+
+error:
+ return 1;
+}
+
+/**
+ * boot_get_fdt - main fdt handling routine
+ * @argc: command argument count
+ * @argv: command argument list
+ * @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.
+ * 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
+ */
+int boot_get_fdt (int flag, int argc, char *argv[], bootm_headers_t *images,
+ char **of_flat_tree, ulong *of_size)
+{
+ ulong fdt_addr;
+ image_header_t *fdt_hdr;
+ char *fdt_blob = NULL;
+ ulong image_start, image_end;
+ ulong load_start, load_end;
+#if defined(CONFIG_FIT)
+ void *fit_hdr;
+ const char *fit_uname_config = NULL;
+ const char *fit_uname_fdt = NULL;
+ ulong default_addr;
+ int cfg_noffset;
+ int fdt_noffset;
+ const void *data;
+ size_t size;
+#endif
+
+ *of_flat_tree = NULL;
+ *of_size = 0;
+
+ if (argc > 3 || genimg_has_config (images)) {
+#if defined(CONFIG_FIT)
+ if (argc > 3) {
+ /*
+ * If the FDT blob comes from the FIT image and the
+ * FIT image address is omitted in the command line
+ * argument, try to use ramdisk or os FIT image
+ * address or default load address.
+ */
+ if (images->fit_uname_rd)
+ default_addr = (ulong)images->fit_hdr_rd;
+ else if (images->fit_uname_os)
+ default_addr = (ulong)images->fit_hdr_os;
+ else
+ default_addr = load_addr;
+
+ if (fit_parse_conf (argv[3], 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 (argv[3], 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(argv[3], NULL, 16);
+ debug ("* fdt: cmdline image address = 0x%08lx\n",
+ fdt_addr);
+ }
+#if defined(CONFIG_FIT)
+ } else {
+ /* use FIT configuration provided in first bootm
+ * command argument
+ */
+ fdt_addr = (ulong)images->fit_hdr_os;
+ fit_uname_config = images->fit_uname_cfg;
+ debug ("* fdt: using config '%s' from image at 0x%08lx\n",
+ fit_uname_config, fdt_addr);
+
+ /*
+ * Check whether configuration has FDT blob defined,
+ * if not quit silently.
+ */
+ fit_hdr = (void *)fdt_addr;
+ cfg_noffset = fit_conf_get_node (fit_hdr,
+ fit_uname_config);
+ if (cfg_noffset < 0) {
+ debug ("* fdt: no such config\n");
+ return 0;
+ }
+
+ fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
+ cfg_noffset);
+ if (fdt_noffset < 0) {
+ debug ("* fdt: no fdt in config\n");
+ return 0;
+ }
+ }
+#endif
+
+ debug ("## Checking for 'FDT'/'FDT Image' at %08lx\n",
+ fdt_addr);
+
+ /* copy from dataflash if needed */
+ fdt_addr = genimg_get_image (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.
+ */
+ switch (genimg_get_format ((void *)fdt_addr)) {
+ case IMAGE_FORMAT_LEGACY:
+ /* verify fdt_addr points to a valid image header */
+ printf ("## Flattened Device Tree from Legacy Image@%08lx\n",
+ fdt_addr);
+ fdt_hdr = image_get_fdt (fdt_addr);
+ if (!fdt_hdr)
+ goto error;
+
+ /*
+ * move image data to the load address,
+ * make sure we don't overwrite initial image
+ */
+ image_start = (ulong)fdt_hdr;
+ image_end = image_get_image_end (fdt_hdr);
+
+ load_start = image_get_load (fdt_hdr);
+ load_end = load_start + image_get_data_size (fdt_hdr);
+
+ if ((load_start < image_end) && (load_end > image_start)) {
+ fdt_error ("fdt overwritten");
+ goto error;
+ }
+
+ 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 *)load_start;
+ break;
+ case IMAGE_FORMAT_FIT:
+ /*
+ * This case will catch both: new uImage format
+ * (libfdt based) and raw FDT blob (also libfdt
+ * based).
+ */
+#if defined(CONFIG_FIT)
+ /* check FDT blob vs FIT blob */
+ if (fit_check_format ((const void *)fdt_addr)) {
+ /*
+ * FIT image
+ */
+ fit_hdr = (void *)fdt_addr;
+ 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
+ */
+ cfg_noffset = fit_conf_get_node (fit_hdr,
+ fit_uname_config);
+
+ if (cfg_noffset < 0) {
+ fdt_error ("Could not find configuration node\n");
+ goto error;
+ }
+
+ fit_uname_config = fdt_get_name (fit_hdr,
+ cfg_noffset, NULL);
+ printf (" Using '%s' configuration\n",
+ fit_uname_config);
+
+ fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
+ cfg_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) {
+ fdt_error ("Could not find subimage node\n");
+ 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;
+ images->fit_noffset_fdt = fdt_noffset;
+ break;
+ } else
+#endif
+ {
+ /*
+ * FDT blob
+ */
+ fdt_blob = (char *)fdt_addr;
+ debug ("* fdt: raw FDT blob\n");
+ printf ("## Flattened Device Tree blob at %08lx\n", (long)fdt_blob);
+ }
+ break;
+ default:
+ fdt_error ("Did not find a cmdline Flattened Device Tree");
+ goto error;
+ }
+
+ printf (" Booting using the fdt blob at 0x%x\n", (int)fdt_blob);
+
+ } else if (images->legacy_hdr_valid &&
+ image_check_type (&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
+
+ ulong fdt_data, fdt_len;
+
+ /*
+ * Now check if we have a legacy multi-component image,
+ * get second entry data start address and len.
+ */
+ printf ("## Flattened Device Tree from multi "
+ "component Image at %08lX\n",
+ (ulong)images->legacy_hdr_os);
+
+ image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len);
+ if (fdt_len) {
+
+ fdt_blob = (char *)fdt_data;
+ printf (" Booting using the fdt at 0x%x\n", (int)fdt_blob);
+
+ if (fdt_check_header (fdt_blob) != 0) {
+ fdt_error ("image is not a fdt");
+ goto error;
+ }
+
+ if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) {
+ fdt_error ("fdt size != image size");
+ goto error;
+ }
+ } else {
+ debug ("## No Flattened Device Tree\n");
+ return 0;
+ }
+ } else {
+ debug ("## No Flattened Device Tree\n");
+ return 0;
+ }
+
+ *of_flat_tree = fdt_blob;
+ *of_size = be32_to_cpu (fdt_totalsize (fdt_blob));
+ debug (" of_flat_tree at 0x%08lx size 0x%08lx\n",
+ *of_flat_tree, *of_size);
+
+ return 0;
+
+error:
+ *of_flat_tree = 0;
+ *of_size = 0;
+ return 1;
+}
+#endif /* CONFIG_OF_LIBFDT */
+
/**
* boot_get_cmdline - allocate and initialize kernel cmdline
* @lmb: pointer to lmb handle, will be used for memory mgmt
diff --git a/include/image.h b/include/image.h
index b8577a0..653cbc6 100644
--- a/include/image.h
+++ b/include/image.h
@@ -223,6 +223,11 @@ typedef struct bootm_headers {

ulong rd_start, rd_end;/* ramdisk start/end */

+#ifdef CONFIG_OF_LIBFDT
+ char *ft_addr; /* flat dev tree address */
+#endif
+ ulong ft_len; /* length of flat device tree */
+
int verify; /* getenv("verify")[0] != 'n' */
struct lmb *lmb; /* for memory mgmt */
} bootm_headers_t;
@@ -273,6 +278,14 @@ ulong genimg_get_image (ulong img_addr);
int boot_get_ramdisk (int argc, char *argv[], bootm_headers_t *images,
uint8_t arch, ulong *rd_start, ulong *rd_end);

+
+#ifdef CONFIG_OF_LIBFDT
+int boot_get_fdt (int flag, int argc, char *argv[], bootm_headers_t *images,
+ char **of_flat_tree, ulong *of_size);
+int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
+ char **of_flat_tree, ulong *of_size);
+#endif
+
#if defined(CONFIG_PPC) || defined(CONFIG_M68K)
int boot_ramdisk_high (struct lmb *lmb, ulong rd_data, ulong rd_len,
ulong *initrd_start, ulong *initrd_end);
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c
index e6a6e44..a3e632f 100644
--- a/lib_ppc/bootm.c
+++ b/lib_ppc/bootm.c
@@ -39,22 +39,12 @@
#include <libfdt.h>
#include <fdt_support.h>

-static void fdt_error (const char *msg);
-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);
-static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
- cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
- char **of_flat_tree, ulong *of_size);
#endif

#ifdef CFG_INIT_RAM_LOCK
#include <asm/cache.h>
#endif

-#ifndef CFG_FDT_PAD
-#define CFG_FDT_PAD 0x3000
-#endif
-
DECLARE_GLOBAL_DATA_PTR;

extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
@@ -82,11 +72,11 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
void (*kernel)(bd_t *, ulong r4, ulong r5, ulong r6,
ulong r7, ulong r8, ulong r9);
int ret;
- ulong of_size = 0;
+ ulong of_size = images->ft_len;
struct lmb *lmb = images->lmb;

#if defined(CONFIG_OF_LIBFDT)
- char *of_flat_tree = NULL;
+ char *of_flat_tree = images->ft_addr;
#endif

kernel = (void (*)(bd_t *, ulong, ulong, ulong,
@@ -128,14 +118,6 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
sp -= 1024;
lmb_reserve(lmb, sp, (CFG_SDRAM_BASE + get_effective_memsize() - sp));

-#if defined(CONFIG_OF_LIBFDT)
- /* find flattened device tree */
- ret = boot_get_fdt (cmdtp, flag, argc, argv, images, &of_flat_tree, &of_size);
-
- if (ret)
- goto error;
-#endif
-
if (!of_size) {
/* allocate space and init command line */
ret = boot_get_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
@@ -156,8 +138,9 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
rd_len = images->rd_end - images->rd_start;

#if defined(CONFIG_OF_LIBFDT)
- ret = boot_relocate_fdt (lmb, bootmap_base,
- cmdtp, flag, argc, argv, &of_flat_tree, &of_size);
+ ret = boot_relocate_fdt(lmb, bootmap_base, &of_flat_tree, &of_size);
+ if (ret)
+ goto error;

/*
* Add the chosen node if it doesn't exist, add the env and bd_t
@@ -166,7 +149,9 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
if (of_size) {
/* pass in dummy initrd info, we'll fix up later */
if (fdt_chosen(of_flat_tree, images->rd_start, images->rd_end, 0) < 0) {
- fdt_error ("/chosen node create failed");
+ puts ("ERROR: ");
+ puts ("/chosen node create failed");
+ puts (" - must RESET the board to recover.\n");
goto error;
}
#ifdef CONFIG_OF_BOARD_SETUP
@@ -339,464 +324,3 @@ static void set_clocks_in_mhz (bd_t *kbd)
#endif /* CONFIG_MPC5xxx */
}
}
-
-#if defined(CONFIG_OF_LIBFDT)
-static void fdt_error (const char *msg)
-{
- puts ("ERROR: ");
- puts (msg);
- puts (" - must RESET the board to recover.\n");
-}
-
-static image_header_t *image_get_fdt (ulong fdt_addr)
-{
- image_header_t *fdt_hdr = (image_header_t *)fdt_addr;
-
- image_print_contents (fdt_hdr);
-
- puts (" Verifying Checksum ... ");
- if (!image_check_hcrc (fdt_hdr)) {
- fdt_error ("fdt header checksum invalid");
- return NULL;
- }
-
- if (!image_check_dcrc (fdt_hdr)) {
- fdt_error ("fdt checksum invalid");
- return NULL;
- }
- puts ("OK\n");
-
- if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
- fdt_error ("uImage is not a fdt");
- return NULL;
- }
- if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
- fdt_error ("uImage is compressed");
- return NULL;
- }
- if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) {
- fdt_error ("uImage data is not a fdt");
- return NULL;
- }
- 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)
-{
- ulong fdt_addr;
- image_header_t *fdt_hdr;
- char *fdt_blob = NULL;
- ulong image_start, image_end;
- ulong load_start, load_end;
-#if defined(CONFIG_FIT)
- void *fit_hdr;
- const char *fit_uname_config = NULL;
- const char *fit_uname_fdt = NULL;
- ulong default_addr;
- int cfg_noffset;
- int fdt_noffset;
- const void *data;
- size_t size;
-#endif
-
- *of_flat_tree = NULL;
- *of_size = 0;
-
- if (argc > 3 || genimg_has_config (images)) {
-#if defined(CONFIG_FIT)
- if (argc > 3) {
- /*
- * If the FDT blob comes from the FIT image and the
- * FIT image address is omitted in the command line
- * argument, try to use ramdisk or os FIT image
- * address or default load address.
- */
- if (images->fit_uname_rd)
- default_addr = (ulong)images->fit_hdr_rd;
- else if (images->fit_uname_os)
- default_addr = (ulong)images->fit_hdr_os;
- else
- default_addr = load_addr;
-
- if (fit_parse_conf (argv[3], 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 (argv[3], 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(argv[3], NULL, 16);
- debug ("* fdt: cmdline image address = 0x%08lx\n",
- fdt_addr);
- }
-#if defined(CONFIG_FIT)
- } else {
- /* use FIT configuration provided in first bootm
- * command argument
- */
- fdt_addr = (ulong)images->fit_hdr_os;
- fit_uname_config = images->fit_uname_cfg;
- debug ("* fdt: using config '%s' from image at 0x%08lx\n",
- fit_uname_config, fdt_addr);
-
- /*
- * Check whether configuration has FDT blob defined,
- * if not quit silently.
- */
- fit_hdr = (void *)fdt_addr;
- cfg_noffset = fit_conf_get_node (fit_hdr,
- fit_uname_config);
- if (cfg_noffset < 0) {
- debug ("* fdt: no such config\n");
- return 0;
- }
-
- fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
- cfg_noffset);
- if (fdt_noffset < 0) {
- debug ("* fdt: no fdt in config\n");
- return 0;
- }
- }
-#endif
-
- debug ("## Checking for 'FDT'/'FDT Image' at %08lx\n",
- fdt_addr);
-
- /* copy from dataflash if needed */
- fdt_addr = genimg_get_image (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.
- */
- switch (genimg_get_format ((void *)fdt_addr)) {
- case IMAGE_FORMAT_LEGACY:
- /* verify fdt_addr points to a valid image header */
- printf ("## Flattened Device Tree from Legacy Image@%08lx\n",
- fdt_addr);
- fdt_hdr = image_get_fdt (fdt_addr);
- if (!fdt_hdr)
- goto error;
-
- /*
- * move image data to the load address,
- * make sure we don't overwrite initial image
- */
- image_start = (ulong)fdt_hdr;
- image_end = image_get_image_end (fdt_hdr);
-
- load_start = image_get_load (fdt_hdr);
- load_end = load_start + image_get_data_size (fdt_hdr);
-
- if ((load_start < image_end) && (load_end > image_start)) {
- fdt_error ("fdt overwritten");
- goto error;
- }
-
- 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 *)load_start;
- break;
- case IMAGE_FORMAT_FIT:
- /*
- * This case will catch both: new uImage format
- * (libfdt based) and raw FDT blob (also libfdt
- * based).
- */
-#if defined(CONFIG_FIT)
- /* check FDT blob vs FIT blob */
- if (fit_check_format ((const void *)fdt_addr)) {
- /*
- * FIT image
- */
- fit_hdr = (void *)fdt_addr;
- 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
- */
- cfg_noffset = fit_conf_get_node (fit_hdr,
- fit_uname_config);
-
- if (cfg_noffset < 0) {
- fdt_error ("Could not find configuration node\n");
- goto error;
- }
-
- fit_uname_config = fdt_get_name (fit_hdr,
- cfg_noffset, NULL);
- printf (" Using '%s' configuration\n",
- fit_uname_config);
-
- fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
- cfg_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) {
- fdt_error ("Could not find subimage node\n");
- 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;
- images->fit_noffset_fdt = fdt_noffset;
- break;
- } else
-#endif
- {
- /*
- * FDT blob
- */
- fdt_blob = (char *)fdt_addr;
- debug ("* fdt: raw FDT blob\n");
- printf ("## Flattened Device Tree blob at %08lx\n", (long)fdt_blob);
- }
- break;
- default:
- fdt_error ("Did not find a cmdline Flattened Device Tree");
- goto error;
- }
-
- printf (" Booting using the fdt blob at 0x%x\n", (int)fdt_blob);
-
- } else if (images->legacy_hdr_valid &&
- image_check_type (&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
-
- ulong fdt_data, fdt_len;
-
- /*
- * Now check if we have a legacy multi-component image,
- * get second entry data start address and len.
- */
- printf ("## Flattened Device Tree from multi "
- "component Image at %08lX\n",
- (ulong)images->legacy_hdr_os);
-
- image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len);
- if (fdt_len) {
-
- fdt_blob = (char *)fdt_data;
- printf (" Booting using the fdt at 0x%x\n", (int)fdt_blob);
-
- if (fdt_check_header (fdt_blob) != 0) {
- fdt_error ("image is not a fdt");
- goto error;
- }
-
- if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) {
- fdt_error ("fdt size != image size");
- goto error;
- }
- } else {
- debug ("## No Flattened Device Tree\n");
- return 0;
- }
- } else {
- debug ("## No Flattened Device Tree\n");
- return 0;
- }
-
- *of_flat_tree = fdt_blob;
- *of_size = be32_to_cpu (fdt_totalsize (fdt_blob));
- debug (" of_flat_tree at 0x%08lx size 0x%08lx\n",
- *of_flat_tree, *of_size);
-
- return 0;
-
-error:
- do_reset (cmdtp, flag, argc, argv);
- return 1;
-}
-
-static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
- cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
- char **of_flat_tree, ulong *of_size)
-{
- char *fdt_blob = *of_flat_tree;
- ulong relocate = 0;
- ulong of_len = 0;
-
- /* nothing to do */
- if (*of_size == 0)
- return 0;
-
- if (fdt_check_header (fdt_blob) != 0) {
- fdt_error ("image is not a fdt");
- goto error;
- }
-
-#ifndef CFG_NO_FLASH
- /* move the blob if it is in flash (set relocate) */
- if (addr2info ((ulong)fdt_blob) != NULL)
- relocate = 1;
-#endif
-
- /*
- * The blob needs to be inside the boot mapping.
- */
- if (fdt_blob < (char *)bootmap_base)
- relocate = 1;
-
- if ((fdt_blob + *of_size + CFG_FDT_PAD) >=
- ((char *)CFG_BOOTMAPSZ + bootmap_base))
- relocate = 1;
-
- /* move flattend device tree if needed */
- if (relocate) {
- int err;
- ulong of_start = 0;
-
- /* position on a 4K boundary before the alloc_current */
- /* Pad the FDT by a specified amount */
- of_len = *of_size + CFG_FDT_PAD;
- of_start = (unsigned long)lmb_alloc_base(lmb, of_len, 0x1000,
- (CFG_BOOTMAPSZ + bootmap_base));
-
- if (of_start == 0) {
- puts("device tree - allocation error\n");
- goto error;
- }
-
- debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
- (ulong)fdt_blob, (ulong)fdt_blob + *of_size - 1,
- of_len, of_len);
-
- printf (" Loading Device Tree to %08lx, end %08lx ... ",
- of_start, of_start + of_len - 1);
-
- err = fdt_open_into (fdt_blob, (void *)of_start, of_len);
- if (err != 0) {
- fdt_error ("fdt move failed");
- goto error;
- }
- puts ("OK\n");
-
- *of_flat_tree = (char *)of_start;
- *of_size = of_len;
- } else {
- *of_flat_tree = fdt_blob;
- of_len = (CFG_BOOTMAPSZ + bootmap_base) - (ulong)fdt_blob;
- lmb_reserve(lmb, (ulong)fdt_blob, of_len);
- fdt_set_totalsize(*of_flat_tree, of_len);
-
- *of_size = of_len;
- }
-
- return 0;
-
-error:
- return 1;
-}
-#endif
--
1.5.5.1