@@ -769,6 +769,13 @@ config CMD_LZMADEC
Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
image from memory.
+config CMD_UNLZ4
+ bool "unlz4"
+ default y if CMD_BOOTI
+ select LZ4
+ help
+ Support decompressing an LZ4 image from memory region.
+
config CMD_UNZIP
bool "unzip"
default y if CMD_BOOTI
@@ -144,6 +144,7 @@ obj-$(CONFIG_CMD_TSI148) += tsi148.o
obj-$(CONFIG_CMD_UBI) += ubi.o
obj-$(CONFIG_CMD_UBIFS) += ubifs.o
obj-$(CONFIG_CMD_UNIVERSE) += universe.o
+obj-$(CONFIG_CMD_UNLZ4) += unlz4.o
obj-$(CONFIG_CMD_UNZIP) += unzip.o
obj-$(CONFIG_CMD_VIRTIO) += virtio.o
obj-$(CONFIG_CMD_WDT) += wdt.o
new file mode 100644
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020
+ * FUJITSU COMPUTERTECHNOLOGIES LIMITED. All rights reserved.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <env.h>
+#include <lz4.h>
+
+static int do_unlz4(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ unsigned long src, dst;
+ size_t src_len = ~0UL, dst_len = ~0UL;
+ int ret;
+
+ switch (argc) {
+ case 4:
+ src = simple_strtoul(argv[1], NULL, 16);
+ dst = simple_strtoul(argv[2], NULL, 16);
+ dst_len = simple_strtoul(argv[3], NULL, 16);
+ break;
+ default:
+ return CMD_RET_USAGE;
+ }
+
+ ret = ulz4fn((void *)src, src_len, (void *)dst, &dst_len);
+ if (ret) {
+ printf("Uncompressed err :%d\n", ret);
+ return 1;
+ }
+
+ printf("Uncompressed size: %ld = 0x%lX\n", dst_len, dst_len);
+ env_set_hex("filesize", dst_len);
+
+ return 0;
+}
+
+U_BOOT_CMD(unlz4, 4, 1, do_unlz4,
+ "lz4 uncompress a memory region",
+ "srcaddr dstaddr dstsize\n"
+ "NOTE: Specify the destination size that is sufficiently larger\n"
+ " than the source size.\n"
+);
This command is a new command called "unlz4" that decompresses from memory into memory. Used with the CONFIG_CMD_UNLZ4 optionenabled. Signed-off-by: Yusuke Ashiduka <ashiduka@fujitsu.com> --- cmd/Kconfig | 7 +++++++ cmd/Makefile | 1 + cmd/unlz4.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 53 insertions(+) create mode 100644 cmd/unlz4.c