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x86: Add support for specifying an initrd with the zboot command

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This change finishes plumbing the initrd support built into the zboot
mechanism out to the command interface.

It also fixes a bug in the command declaration where the kernel size could
be passed as an optional second parameter but not enough arguments were
allowed.

Signed-off-by: Gabe Black <gabeblack@chromium.org>
This commit is contained in:
Gabe Black 2011-12-05 12:09:27 +00:00 committed by Graeme Russ
parent 69370d144a
commit 6f9d9986d5
1 changed files with 19 additions and 4 deletions
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23
arch/x86/lib/zimage.c
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@ -321,6 +321,8 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
void *load_address;
char *s;
ulong bzImage_size = 0;
ulong initrd_addr = 0;
ulong initrd_size = 0;
disable_interrupts();
@ -337,9 +339,15 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
if (s)
bzImage_addr = (void *)simple_strtoul(s, NULL, 16);
if (argc >= 3)
if (argc >= 3) {
/* argv[2] holds the size of the bzImage */
bzImage_size = simple_strtoul(argv[2], NULL, 16);
}
if (argc >= 4)
initrd_addr = simple_strtoul(argv[3], NULL, 16);
if (argc >= 5)
initrd_size = simple_strtoul(argv[4], NULL, 16);
/* Lets look for */
base_ptr = load_zimage(bzImage_addr, bzImage_size, &load_address);
@ -349,7 +357,7 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
return -1;
}
if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
0, 0, 0)) {
0, initrd_addr, initrd_size)) {
printf("Setting up boot parameters failed ...\n");
return -1;
}
@ -366,7 +374,14 @@ int do_zboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
}
U_BOOT_CMD(
zboot, 2, 0, do_zboot,
zboot, 5, 0, do_zboot,
"Boot bzImage",
""
"[addr] [size] [initrd addr] [initrd size]\n"
" addr - The optional starting address of the bzimage.\n"
" If not set it defaults to the environment\n"
" variable \"fileaddr\".\n"
" size - The optional size of the bzimage. Defaults to\n"
" zero.\n"
" initrd addr - The address of the initrd image to use, if any.\n"
" initrd size - The size of the initrd image to use, if any.\n"
);