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Diffstat (limited to 'common/cmd_bootm.c')
-rw-r--r--common/cmd_bootm.c105
1 files changed, 95 insertions, 10 deletions
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index c0ed076..32c29e5 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -34,7 +34,12 @@
#include <environment.h>
#include <asm/byteorder.h>
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_LIBFDT)
+#include <fdt.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#endif
+#if defined(CONFIG_OF_FLAT_TREE)
#include <ft_build.h>
#endif
@@ -467,7 +472,7 @@ U_BOOT_CMD(
"[addr [arg ...]]\n - boot application image stored in memory\n"
"\tpassing arguments 'arg ...'; when booting a Linux kernel,\n"
"\t'arg' can be the address of an initrd image\n"
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
"\tWhen booting a Linux kernel which requires a flat device-tree\n"
"\ta third argument is required which is the address of the of the\n"
"\tdevice-tree blob. To boot that kernel without an initrd image,\n"
@@ -529,7 +534,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
bd_t *kbd;
void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
image_header_t *hdr = &header;
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
char *of_flat_tree = NULL;
ulong of_data = 0;
#endif
@@ -622,7 +627,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
* Check if there is an initrd image
*/
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
/* Look for a '-' which indicates to ignore the ramdisk argument */
if (argc >= 3 && strcmp(argv[2], "-") == 0) {
debug ("Skipping initrd\n");
@@ -739,12 +744,15 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
len = data = 0;
}
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
if(argc > 3) {
of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
hdr = (image_header_t *)of_flat_tree;
-
- if (*(ulong *)of_flat_tree == OF_DT_HEADER) {
+#if defined(CONFIG_OF_LIBFDT)
+ if (fdt_check_header(of_flat_tree) == 0) {
+#else
+ if (*(ulong *)of_flat_tree == OF_DT_HEADER) {
+#endif
#ifndef CFG_NO_FLASH
if (addr2info((ulong)of_flat_tree) != NULL)
of_data = (ulong)of_flat_tree;
@@ -787,7 +795,11 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
printf("ERROR: uImage is not uncompressed\n");
return;
}
+#if defined(CONFIG_OF_LIBFDT)
+ if (fdt_check_header(of_flat_tree + sizeof(image_header_t)) == 0) {
+#else
if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) {
+#endif
printf ("ERROR: uImage data is not a flat device tree\n");
return;
}
@@ -824,12 +836,20 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
of_data += 4 - tail;
}
+#if defined(CONFIG_OF_LIBFDT)
+ if (fdt_check_header((void *)of_data) != 0) {
+#else
if (((struct boot_param_header *)of_data)->magic != OF_DT_HEADER) {
+#endif
printf ("ERROR: image is not a flat device tree\n");
return;
}
+#if defined(CONFIG_OF_LIBFDT)
+ if (be32_to_cpu(fdt_totalsize(of_data)) != ntohl(len_ptr[2])) {
+#else
if (((struct boot_param_header *)of_data)->totalsize != ntohl(len_ptr[2])) {
+#endif
printf ("ERROR: flat device tree size does not agree with image\n");
return;
}
@@ -913,7 +933,52 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
unlock_ram_in_cache();
#endif
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_LIBFDT)
+ /* move of_flat_tree if needed */
+ if (of_data) {
+ int err;
+ ulong of_start, of_len;
+
+ of_len = be32_to_cpu(fdt_totalsize(of_data));
+ /* position on a 4K boundary before the initrd/kbd */
+ if (initrd_start)
+ of_start = initrd_start - of_len;
+ else
+ of_start = (ulong)kbd - of_len;
+ of_start &= ~(4096 - 1); /* align on page */
+ debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
+ of_data, of_data + of_len - 1, of_len, of_len);
+
+ of_flat_tree = (char *)of_start;
+ printf (" Loading Device Tree to %08lx, end %08lx ... ",
+ of_start, of_start + of_len - 1);
+ err = fdt_open_into((void *)of_start, (void *)of_data, of_len);
+ if (err != 0) {
+ printf ("libfdt: %s " __FILE__ " %d\n", fdt_strerror(err), __LINE__);
+ }
+ /*
+ * Add the chosen node if it doesn't exist, add the env and bd_t
+ * if the user wants it (the logic is in the subroutines).
+ */
+ if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
+ printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree);
+ return;
+ }
+#ifdef CONFIG_OF_HAS_UBOOT_ENV
+ if (fdt_env(of_flat_tree) < 0) {
+ printf("Failed creating the /u-boot-env node, aborting.\n");
+ return;
+ }
+#endif
+#ifdef CONFIG_OF_HAS_BD_T
+ if (fdt_bd_t(of_flat_tree) < 0) {
+ printf("Failed creating the /bd_t node, aborting.\n");
+ return;
+ }
+#endif
+ }
+#endif
+#if defined(CONFIG_OF_FLAT_TREE)
/* move of_flat_tree if needed */
if (of_data) {
ulong of_start, of_len;
@@ -942,13 +1007,13 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
* r6: Start of command line string
* r7: End of command line string
*/
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
if (!of_flat_tree) /* no device tree; boot old style */
#endif
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
/* does not return */
-#ifdef CONFIG_OF_FLAT_TREE
+#if defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)
/*
* Linux Kernel Parameters (passing device tree):
* r3: ptr to OF flat tree, followed by the board info data
@@ -957,8 +1022,28 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
* r6: NULL
* r7: NULL
*/
+#if defined(CONFIG_OF_FLAT_TREE)
ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
/* ft_dump_blob(of_flat_tree); */
+#endif
+#if defined(CONFIG_OF_LIBFDT)
+ if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
+ printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree);
+ return;
+ }
+#ifdef CONFIG_OF_HAS_UBOOT_ENV
+ if (fdt_env(of_flat_tree) < 0) {
+ printf("Failed creating the /u-boot-env node, aborting.\n");
+ return;
+ }
+#endif
+#ifdef CONFIG_OF_HAS_BD_T
+ if (fdt_bd_t(of_flat_tree) < 0) {
+ printf("Failed creating the /bd_t node, aborting.\n");
+ return;
+ }
+#endif
+#endif /* if defined(CONFIG_OF_LIBFDT) */
(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
#endif
generated by cgit v1.1 at 2024-11-28 09:52:57 +0000