Add lzmadec command

I needed to be able to uncompress lzma files. I did this command
based on unzip command and propose it if it could help.

Signed-off-by: Patrice Bouchand <pbfwdlist@gmail.com>
Changed to work with sandbox
Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/common/Makefile b/common/Makefile
index e2ff0cb..cecd81a 100644 (file)
--- a/common/Makefile
+++ b/common/Makefile
@@ -159,6 +159,9 @@ obj-$(CONFIG_CMD_UBI) += cmd_ubi.o
 obj-$(CONFIG_CMD_UBIFS) += cmd_ubifs.o
 obj-$(CONFIG_CMD_UNIVERSE) += cmd_universe.o
 obj-$(CONFIG_CMD_UNZIP) += cmd_unzip.o
+ifdef CONFIG_LZMA
+obj-$(CONFIG_CMD_LZMADEC) += cmd_lzmadec.o
+endif
 ifdef CONFIG_CMD_USB
 obj-y += cmd_usb.o
 obj-y += usb.o usb_hub.o

diff --git a/common/cmd_lzmadec.c b/common/cmd_lzmadec.c
new file mode 100644 (file)
index 0000000..7b0b3fd
--- /dev/null
+++ b/common/cmd_lzmadec.c
@@ -0,0 +1,52 @@
+/*
+ * (C) Copyright 2013 Patrice Bouchand <pbfwdlist_gmail_com>
+ * lzma uncompress command in Uboot
+ *
+ * made from existing cmd_unzip.c file of Uboot
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+
+#include <lzma/LzmaTools.h>
+
+static int do_lzmadec(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+       unsigned long src, dst;
+       unsigned long src_len = ~0UL, dst_len = ~0UL;
+       int ret;
+
+       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:
+               return CMD_RET_USAGE;
+       }
+
+       ret = lzmaBuffToBuffDecompress(map_sysmem(dst, dst_len), &src_len,
+                                      map_sysmem(src, 0), dst_len);
+
+       if (ret != SZ_OK)
+               return 1;
+       printf("Uncompressed size: %ld = 0x%lX\n", src_len, src_len);
+       setenv_hex("filesize", src_len);
+
+       return 0;
+}
+
+U_BOOT_CMD(
+       lzmadec,    4,    1,    do_lzmadec,
+       "lzma uncompress a memory region",
+       "srcaddr dstaddr [dstsize]"
+);