mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 13:14:27 +00:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2009-2013 ADVANSEE
|
|
* Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
|
|
*
|
|
* Based on the mpc512x iim code:
|
|
* Copyright 2008 Silicon Turnkey Express, Inc.
|
|
* Martha Marx <mmarx@silicontkx.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <console.h>
|
|
#include <fuse.h>
|
|
#include <linux/errno.h>
|
|
|
|
static int strtou32(const char *str, unsigned int base, u32 *result)
|
|
{
|
|
char *ep;
|
|
|
|
*result = simple_strtoul(str, &ep, base);
|
|
if (ep == str || *ep != '\0')
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int confirm_prog(void)
|
|
{
|
|
puts("Warning: Programming fuses is an irreversible operation!\n"
|
|
" This may brick your system.\n"
|
|
" Use this command only if you are sure of "
|
|
"what you are doing!\n"
|
|
"\nReally perform this fuse programming? <y/N>\n");
|
|
|
|
if (confirm_yesno())
|
|
return 1;
|
|
|
|
puts("Fuse programming aborted\n");
|
|
return 0;
|
|
}
|
|
|
|
static int do_fuse(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
|
|
{
|
|
const char *op = argc >= 2 ? argv[1] : NULL;
|
|
int confirmed = argc >= 3 && !strcmp(argv[2], "-y");
|
|
u32 bank, word, cnt, val;
|
|
int ret, i;
|
|
|
|
argc -= 2 + confirmed;
|
|
argv += 2 + confirmed;
|
|
|
|
if (argc < 2 || strtou32(argv[0], 0, &bank) ||
|
|
strtou32(argv[1], 0, &word))
|
|
return CMD_RET_USAGE;
|
|
|
|
if (!strcmp(op, "read")) {
|
|
if (argc == 2)
|
|
cnt = 1;
|
|
else if (argc != 3 || strtou32(argv[2], 0, &cnt))
|
|
return CMD_RET_USAGE;
|
|
|
|
printf("Reading bank %u:\n", bank);
|
|
for (i = 0; i < cnt; i++, word++) {
|
|
if (!(i % 4))
|
|
printf("\nWord 0x%.8x:", word);
|
|
|
|
ret = fuse_read(bank, word, &val);
|
|
if (ret)
|
|
goto err;
|
|
|
|
printf(" %.8x", val);
|
|
}
|
|
putc('\n');
|
|
} else if (!strcmp(op, "sense")) {
|
|
if (argc == 2)
|
|
cnt = 1;
|
|
else if (argc != 3 || strtou32(argv[2], 0, &cnt))
|
|
return CMD_RET_USAGE;
|
|
|
|
printf("Sensing bank %u:\n", bank);
|
|
for (i = 0; i < cnt; i++, word++) {
|
|
if (!(i % 4))
|
|
printf("\nWord 0x%.8x:", word);
|
|
|
|
ret = fuse_sense(bank, word, &val);
|
|
if (ret)
|
|
goto err;
|
|
|
|
printf(" %.8x", val);
|
|
}
|
|
putc('\n');
|
|
} else if (!strcmp(op, "prog")) {
|
|
if (argc < 3)
|
|
return CMD_RET_USAGE;
|
|
|
|
for (i = 2; i < argc; i++, word++) {
|
|
if (strtou32(argv[i], 16, &val))
|
|
return CMD_RET_USAGE;
|
|
|
|
printf("Programming bank %u word 0x%.8x to 0x%.8x...\n",
|
|
bank, word, val);
|
|
if (!confirmed && !confirm_prog())
|
|
return CMD_RET_FAILURE;
|
|
ret = fuse_prog(bank, word, val);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
} else if (!strcmp(op, "override")) {
|
|
if (argc < 3)
|
|
return CMD_RET_USAGE;
|
|
|
|
for (i = 2; i < argc; i++, word++) {
|
|
if (strtou32(argv[i], 16, &val))
|
|
return CMD_RET_USAGE;
|
|
|
|
printf("Overriding bank %u word 0x%.8x with "
|
|
"0x%.8x...\n", bank, word, val);
|
|
ret = fuse_override(bank, word, val);
|
|
if (ret)
|
|
goto err;
|
|
}
|
|
} else {
|
|
return CMD_RET_USAGE;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
puts("ERROR\n");
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
fuse, CONFIG_SYS_MAXARGS, 0, do_fuse,
|
|
"Fuse sub-system",
|
|
"read <bank> <word> [<cnt>] - read 1 or 'cnt' fuse words,\n"
|
|
" starting at 'word'\n"
|
|
"fuse sense <bank> <word> [<cnt>] - sense 1 or 'cnt' fuse words,\n"
|
|
" starting at 'word'\n"
|
|
"fuse prog [-y] <bank> <word> <hexval> [<hexval>...] - program 1 or\n"
|
|
" several fuse words, starting at 'word' (PERMANENT)\n"
|
|
"fuse override <bank> <word> <hexval> [<hexval>...] - override 1 or\n"
|
|
" several fuse words, starting at 'word'"
|
|
);
|