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>

diff --git a/README b/README
index a9dc69bae0592c99544c575c01dd251b9deff0a1..90a79bfbccef86239f2929a940138e26896adf3c 100644 (file)
--- 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 5e5d572ebf294397fed0015efbfdb841ea3cf64f..9ad2535d4bacc7fe6831c4c9838608ce5f16ffd2 100644 (file)
--- 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 8c644b7dacdc9b7a196a5238f4dc5d94bd615d07..103e0e6e757bf47553c4fed357bf037072b63fa6 100644 (file)
--- 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,