[U-Boot] [PATCH v2 1/2] Add lzmadec command

[Simon Glass]

From: Patrice Bouchand <pbfwdlist at gmail.com>

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 at gmail.com>
Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v2:
- Reformat commit message/code a little (patch slightly mangled)

 common/Makefile      |  3 +++
 common/cmd_lzmadec.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 common/cmd_lzmadec.c

diff --git a/common/Makefile b/common/Makefile
index a83246e..55a0785 100644
--- 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
index 0000000..2caf738
--- /dev/null
+++ b/common/cmd_lzmadec.c
@@ -0,0 +1,51 @@
+/*
+ * (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/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]"
+);
-- 
1.9.0.rc1.175.g0b1dcb5