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Fix initrd/dtb interaction

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The original code would wrongly relocate the blob to be right before
the initrd if it existed.  The blob *must* be within CFG_BOOTMAPSZ,
if it is defined.  So we make two changes:

1) flag the blob for relocation whenever its address is above BOOTMAPSZ

2) If the blob is being relocated, relocate it before kbd, not initrd

Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Andy Fleming 2007-08-14 10:32:59 -05:00 committed by Wolfgang Denk
parent a4d2636f2a
commit 073e1b5099
1 changed files with 14 additions and 9 deletions
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23
common/cmd_bootm.c
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@ -924,6 +924,15 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
initrd_end = 0;
}
#ifdef CFG_BOOTMAPSZ
/*
* The blob must be within CFG_BOOTMAPSZ,
* so we flag it to be copied if it is
*/
if (of_flat_tree >= (char *)CFG_BOOTMAPSZ)
of_data = of_flat_tree;
#endif
#if defined(CONFIG_OF_LIBFDT)
/* move of_flat_tree if needed */
if (of_data) {
@ -931,11 +940,9 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
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;
/* position on a 4K boundary before the kbd */
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);
@ -983,11 +990,9 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
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 = (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);