[U-Boot] [PATCH] Add lzmadec command

[Patrice B]

Hi,

 I needed to be able to uncompress lzma files. I did this command
based on unzip command and propose it if it could help. Hopping the
patch is correctly done...

  Best regards.

       Patrice


Signed-off-by: Patrice Bouchand <pbfwdlist_gmail_com>

---
 common/Makefile      |  3 +++
 common/cmd_lzmadec.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 common/cmd_lzmadec.c

diff --git a/common/Makefile b/common/Makefile
index d12cba5..b99a6b0 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -158,6 +158,9 @@ 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
index 0000000..07103d3
--- /dev/null
+++ b/common/cmd_lzmadec.c
@@ -0,0 +1,54 @@
+/*
+ * (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 at denx.de.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+
+#include <lzma/LzmaTypes.h>
+#include <lzma/LzmaDec.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((void *) dst, &src_len,
+            (void *) src, 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]"
+);
-- 
1.8.4.2