add 'unzip' command to u-boot commandline

[PATCH] add new 'unzip' command to u-boot commandline

common/cmd_mem.c: new command "unzip srcaddr dstaddr [dstsize]" to unzip from
memory to memory, and option CONFIG_CMD_UNZIP to enable it

Signed-off-by: Werner Almesberger <werner@openmoko.org>
Signed-off-by: Harald Welte <laforge@openmoko.org>

diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index 2606986..a78355c 100644 (file)
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -1198,6 +1198,34 @@ int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 }
 #endif /* CONFIG_CRC32_VERIFY */
 
+
+#ifdef CONFIG_CMD_UNZIP
+int  gunzip (void *, int, unsigned char *, unsigned long *);
+
+int do_unzip ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+       unsigned long src, dst;
+       unsigned long src_len = ~0UL, dst_len = ~0UL;
+       int err;
+
+       switch (argc) {
+               case 4:
+                       dst_len = simple_strtoul(argv[3], NULL, 16);
+                       /* fall through */
+               case 3:
+                       src = simple_strtoul(argv[1], NULL, 16);
+                       dst = simple_strtoul(argv[2], NULL, 16);
+                       break;
+               default:
+                       printf ("Usage:\n%s\n", cmdtp->usage);
+                       return 1;
+       }
+
+       return !!gunzip((void *) dst, dst_len, (void *) src, &src_len);
+}
+#endif /* CONFIG_CMD_UNZIP */
+
+
 /**************************************************/
 #if defined(CONFIG_CMD_MEMORY)
 U_BOOT_CMD(
@@ -1301,5 +1329,13 @@ U_BOOT_CMD(
 );
 #endif /* CONFIG_MX_CYCLIC */
 
+#ifdef CONFIG_CMD_UNZIP
+U_BOOT_CMD(
+       unzip,  4,      1,      do_unzip,
+       "unzip - unzip a memory region\n",
+       "srcaddr dstaddr [dstsize]\n"
+);
+#endif /* CONFIG_CMD_UNZIP */
+
 #endif
 #endif

diff --git a/include/config_cmd_all.h b/include/config_cmd_all.h
index c2bb094..2cb2f67 100644 (file)
--- a/include/config_cmd_all.h
+++ b/include/config_cmd_all.h
@@ -77,6 +77,7 @@
 #define CONFIG_CMD_SPI         /* SPI utility                  */
 #define CONFIG_CMD_TERMINAL    /* built-in Serial Terminal     */
 #define CONFIG_CMD_UNIVERSE    /* Tundra Universe Support      */
+#define CONFIG_CMD_UNZIP       /* unzip from memory to memory  */
 #define CONFIG_CMD_USB         /* USB Support                  */
 #define CONFIG_CMD_VFD         /* VFD support (TRAB)           */
 #define CONFIG_CMD_XIMG                /* Load part of Multi Image     */