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authorMarek Vasut <marek.vasut@gmail.com>2012-03-18 11:47:58 +0000
committerWolfgang Denk <wd@denx.de>2012-03-30 23:00:47 +0200
commit017e1f3f9fc8745cc12bbd924b0cbc4d6ee5dbf8 (patch)
tree7c44cb0303a56be05468b3a4960b5e1eced117b0
parent44f074c771c4b70d250b0d7ed2f7513488c678bb (diff)
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BOOT: Add RAW ramdisk support to bootz
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>
-rw-r--r--README5
-rw-r--r--common/cmd_bootm.c6
-rw-r--r--common/image.c15
3 files changed, 21 insertions, 5 deletions
diff --git a/README b/README
index a9dc69b..90a79bf 100644
--- a/README
+++ b/README
@@ -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:
=================
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 5e5d572..9ad2535 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -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"
diff --git a/common/image.c b/common/image.c
index 8c644b7..103e0e6 100644
--- a/common/image.c
+++ b/common/image.c
@@ -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,