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Lockpick_RCM/bdk/soc/kfuse.c
2020-06-26 14:17:06 -06:00

51 lines
1.2 KiB
C

/*
* Copyright (c) 2018 naehrwert
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <soc/kfuse.h>
#include <soc/clock.h>
#include <soc/t210.h>
int kfuse_wait_ready()
{
// Wait for KFUSE to finish init and verification of data.
while (!(KFUSE(KFUSE_STATE) & KFUSE_STATE_DONE))
;
if (!(KFUSE(KFUSE_STATE) & KFUSE_STATE_CRCPASS))
return 0;
return 1;
}
int kfuse_read(u32 *buf)
{
int res = 0;
clock_enable_kfuse();
if (!kfuse_wait_ready())
goto out;
KFUSE(KFUSE_KEYADDR) = KFUSE_KEYADDR_AUTOINC;
for (int i = 0; i < KFUSE_NUM_WORDS; i++)
buf[i] = KFUSE(KFUSE_KEYS);
res = 1;
out:
clock_disable_kfuse();
return res;
}