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BOOT: Add RAW ramdisk support to bootz

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This patch allows loading RAW ramdisk via bootz command. The raw ramdisk is
loaded only in case it's size is specified:

  bootz <kernel addr> <ramdisk addr>:<ramdisk size> <fdt addr>

For example:

  bootz 0x42000000 0x43000000:0x12345 0x44000000

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Tom Warren <TWarren@nvidia.com>
Cc: albert.u.boot@aribaud.net
Cc: afleming@gmail.com
Cc: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
This commit is contained in:
Marek Vasut 2012-03-18 11:47:58 +00:00 committed by Wolfgang Denk
parent 44f074c771
commit 017e1f3f9f
3 changed files with 21 additions and 5 deletions
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5
README
View File

@ -4437,6 +4437,11 @@ On some platforms, it's possible to boot Linux zImage. This is done
using the "bootz" command. The syntax of "bootz" command is the same
as the syntax of "bootm" command.
Note, defining the CONFIG_SUPPORT_INITRD_RAW allows user to supply
kernel with raw initrd images. The syntax is slightly different, the
address of the initrd must be augmented by it's size, in the following
format: "<initrd addres>:<initrd size>".
Standalone HOWTO:
=================

6
common/cmd_bootm.c
View File

@ -1629,9 +1629,11 @@ static int do_bootz(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
U_BOOT_CMD(
bootz, CONFIG_SYS_MAXARGS, 1, do_bootz,
"boot Linux zImage image from memory",
"[addr [initrd] [fdt]]\n - boot Linux zImage stored in memory\n"
"[addr [initrd[:size]] [fdt]]\n"
" - boot Linux zImage stored in memory\n"
"\tThe argument 'initrd' is optional and specifies the address\n"
"\tof the initrd in memory.\n"
"\tof the initrd in memory. The optional argument ':size' allows\n"
"\tspecifying the size of RAW initrd.\n"
#if 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\n"

15
common/image.c
View File

@ -797,6 +797,7 @@ int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,
ulong rd_addr, rd_load;
ulong rd_data, rd_len;
const image_header_t *rd_hdr;
char *end;
#if defined(CONFIG_FIT)
void *fit_hdr;
const char *fit_uname_config = NULL;
@ -994,9 +995,17 @@ int boot_get_ramdisk(int argc, char * const argv[], bootm_headers_t *images,
break;
#endif
default:
puts("Wrong Ramdisk Image Format\n");
rd_data = rd_len = rd_load = 0;
return 1;
#ifdef CONFIG_SUPPORT_RAW_INITRD
if (argc >= 3 && (end = strchr(argv[2], ':'))) {
rd_len = simple_strtoul(++end, NULL, 16);
rd_data = rd_addr;
} else
#endif
{
puts("Wrong Ramdisk Image Format\n");
rd_data = rd_len = rd_load = 0;
return 1;
}
}
} else if (images->legacy_hdr_valid &&
image_check_type(&images->legacy_hdr_os_copy,