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Diffstat (limited to 'lib_ppc/bootm.c')
-rw-r--r--lib_ppc/bootm.c174
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;
}
generated by cgit v1.1 at 2024-11-26 18:35:50 +0000