u-boot/board/toradex/apalis_imx6/do_fuse.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
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>
2018-05-07 09:34:12 -04:00

97 lines
2.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014-2016, Toradex AG
*/
/*
* Helpers for i.MX OTP fusing during module production
*/
#include <common.h>
#ifndef CONFIG_SPL_BUILD
#include <console.h>
#include <fuse.h>
static int mfgr_fuse(void)
{
unsigned val, val6;
fuse_sense(0, 5, &val);
printf("Fuse 0, 5: %8x\n", val);
fuse_sense(0, 6, &val6);
printf("Fuse 0, 6: %8x\n", val6);
fuse_sense(4, 3, &val);
printf("Fuse 4, 3: %8x\n", val);
fuse_sense(4, 2, &val);
printf("Fuse 4, 2: %8x\n", val);
if (val6 & 0x10) {
puts("BT_FUSE_SEL already fused, will do nothing\n");
return CMD_RET_FAILURE;
}
/* boot cfg */
fuse_prog(0, 5, 0x00005072);
/* BT_FUSE_SEL */
fuse_prog(0, 6, 0x00000010);
return CMD_RET_SUCCESS;
}
int do_mfgr_fuse(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
int ret;
puts("Fusing...\n");
ret = mfgr_fuse();
if (ret == CMD_RET_SUCCESS)
puts("done.\n");
else
puts("failed.\n");
return ret;
}
int do_updt_fuse(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
unsigned val;
int ret;
int confirmed = argc >= 1 && !strcmp(argv[1], "-y");
/* can be used in scripts for command availability check */
if (argc >= 1 && !strcmp(argv[1], "-n"))
return CMD_RET_SUCCESS;
/* boot cfg */
fuse_sense(0, 5, &val);
printf("Fuse 0, 5: %8x\n", val);
if (val & 0x10) {
puts("Fast boot mode already fused, no need to fuse\n");
return CMD_RET_SUCCESS;
}
if (!confirmed) {
puts("Warning: Programming fuses is an irreversible operation!\n"
" Updating to fast boot mode prevents easy\n"
" downgrading to previous BSP versions.\n"
"\nReally perform this fuse programming? <y/N>\n");
if (!confirm_yesno())
return CMD_RET_FAILURE;
}
puts("Fusing fast boot mode...\n");
ret = fuse_prog(0, 5, 0x00005072);
if (ret == CMD_RET_SUCCESS)
puts("done.\n");
else
puts("failed.\n");
return ret;
}
U_BOOT_CMD(
mfgr_fuse, 1, 0, do_mfgr_fuse,
"OTP fusing during module production",
""
);
U_BOOT_CMD(
updt_fuse, 2, 0, do_updt_fuse,
"OTP fusing during module update",
"updt_fuse [-n] [-y] - boot cfg fast boot mode fusing"
);
#endif /* CONFIG_SPL_BUILD */