diff options
| -rw-r--r-- | common/cmd_bootm.c | 61 |
1 files changed, 55 insertions, 6 deletions
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index e8895c6..ab3c32c 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -531,6 +531,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, image_header_t *hdr = &header; #ifdef CONFIG_OF_FLAT_TREE char *of_flat_tree = NULL; + ulong of_data = 0; #endif if ((s = getenv ("initrd_high")) != NULL) { @@ -745,11 +746,8 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, if (*(ulong *)of_flat_tree == OF_DT_HEADER) { #ifndef CFG_NO_FLASH - if (addr2info((ulong)of_flat_tree) != NULL) { - printf ("Cannot modify flat device tree stored in flash\n" \ - "Copy to memory before using the bootm command\n"); - return; - } + if (addr2info((ulong)of_flat_tree) != NULL) + of_data = (ulong)of_flat_tree; #endif } else if (ntohl(hdr->ih_magic) == IH_MAGIC) { printf("## Flat Device Tree Image at %08lX\n", hdr); @@ -804,7 +802,39 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, } printf (" Booting using flat device tree at 0x%x\n", of_flat_tree); - } else if(getenv("disable_of") == NULL) { + } else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1]) && (len_ptr[2])) { + u_long tail = ntohl(len_ptr[0]) % 4; + int i; + + /* skip kernel length, initrd length, and terminator */ + of_data = (ulong)(&len_ptr[3]); + /* skip any additional image length fields */ + for (i=2; len_ptr[i]; ++i) + of_data += 4; + /* add kernel length, and align */ + of_data += ntohl(len_ptr[0]); + if (tail) { + of_data += 4 - tail; + } + + /* add initrd length, and align */ + tail = ntohl(len_ptr[1]) % 4; + of_data += ntohl(len_ptr[1]); + if (tail) { + of_data += 4 - tail; + } + + if (((struct boot_param_header *)of_data)->magic != OF_DT_HEADER) { + printf ("ERROR: image is not a flat device tree\n"); + return; + } + + if (((struct boot_param_header *)of_data)->totalsize != ntohl(len_ptr[2])) { + printf ("ERROR: flat device tree size does not agree with image\n"); + return; + } + + } else if (getenv("disable_of") == NULL) { printf ("ERROR: bootm needs flat device tree as third argument\n"); return; } @@ -900,6 +930,25 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); #else + /* move of_flat_tree if needed */ + if (of_data) { + ulong of_start, of_len; + of_len = ((struct boot_param_header *)of_data)->totalsize; + /* provide extra 8k pad */ + if (initrd_start) + of_start = initrd_start - of_len - 8192; + else + of_start = (ulong)kbd - of_len - 8192; + 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); + memmove ((void *)of_start, (void *)of_data, of_len); + } + ft_setup(of_flat_tree, kbd, initrd_start, initrd_end); /* ft_dump_blob(of_flat_tree); */ |