mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 13:14:27 +00:00
336d4615f8
At present dm/device.h includes the linux-compatible features. This requires including linux/compat.h which in turn includes a lot of headers. One of these is malloc.h which we thus end up including in every file in U-Boot. Apart from the inefficiency of this, it is problematic for sandbox which needs to use the system malloc() in some files. Move the compatibility features into a separate header file. Signed-off-by: Simon Glass <sjg@chromium.org>
57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* The 'rng' command prints bytes from the hardware random number generator.
|
|
*
|
|
* Copyright (c) 2019, Heinrich Schuchardt <xypron.glpk@gmx.de>
|
|
*/
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <dm.h>
|
|
#include <hexdump.h>
|
|
#include <malloc.h>
|
|
#include <rng.h>
|
|
|
|
static int do_rng(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
size_t n = 0x40;
|
|
struct udevice *dev;
|
|
void *buf;
|
|
int ret = CMD_RET_SUCCESS;
|
|
|
|
if (uclass_get_device(UCLASS_RNG, 0, &dev) || !dev) {
|
|
printf("No RNG device\n");
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
|
|
if (argc >= 2)
|
|
n = simple_strtoul(argv[1], NULL, 16);
|
|
|
|
buf = malloc(n);
|
|
if (!buf) {
|
|
printf("Out of memory\n");
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
|
|
if (dm_rng_read(dev, buf, n)) {
|
|
printf("Reading RNG failed\n");
|
|
ret = CMD_RET_FAILURE;
|
|
} else {
|
|
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, n);
|
|
}
|
|
|
|
free(buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_SYS_LONGHELP
|
|
static char rng_help_text[] =
|
|
"[n]\n"
|
|
" - print n random bytes\n";
|
|
#endif
|
|
|
|
U_BOOT_CMD(
|
|
rng, 2, 0, do_rng,
|
|
"print bytes from the hardware random number generator",
|
|
rng_help_text
|
|
);
|