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
diff --git a/cmd/Kconfig b/cmd/Kconfig index 6403bc45a5..3607edd2d2 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -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 diff --git a/cmd/Makefile b/cmd/Makefile index f1dd513a4b..6692ed96c6 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -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 diff --git a/cmd/unlz4.c b/cmd/unlz4.c new file mode 100644 index 0000000000..4d3af53fea --- /dev/null +++ b/cmd/unlz4.c @@ -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" +);