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cmd: Add unlz4 command

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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>
[trini: Use %zd / %zX not %ld / %lX in printf]
Signed-off-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Yusuke Ashiduka 2020-02-20 20:48:01 +09:00 committed by Tom Rini
parent 46d9d1c306
commit a17322329b
3 changed files with 53 additions and 0 deletions
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7
cmd/Kconfig
View file

@ -770,6 +770,13 @@ 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

1
cmd/Makefile
View file

@ -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

45
cmd/unlz4.c Normal file
View file

@ -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: %zd = 0x%zX\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"
);