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https://github.com/Decscots/Lockpick_RCM.git
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Add wait for KFuse init to prevent wrong TSEC key
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source/soc/kfuse.c
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61
source/soc/kfuse.c
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/*
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* Copyright (c) 2018 naehrwert
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../soc/kfuse.h"
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#include "../soc/clock.h"
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#include "../soc/t210.h"
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#pragma GCC push_options
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#pragma GCC optimize ("Os")
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int kfuse_read(u32 *buf)
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{
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int res = 0;
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clock_enable_kfuse();
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while (!(KFUSE(KFUSE_STATE) & KFUSE_STATE_DONE))
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;
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if (!(KFUSE(KFUSE_STATE) & KFUSE_STATE_CRCPASS))
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goto out;
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KFUSE(KFUSE_KEYADDR) = KFUSE_KEYADDR_AUTOINC;
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for (int i = 0; i < KFUSE_NUM_WORDS; i++)
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buf[i] = KFUSE(KFUSE_KEYS);
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res = 1;
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out:;
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clock_disable_kfuse();
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return res;
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}
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int kfuse_wait_ready()
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{
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// Wait for KFUSE to finish init and verification of data.
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while (!(KFUSE(KFUSE_STATE) & KFUSE_STATE_DONE))
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{
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usleep(500);
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}
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if (!(KFUSE(KFUSE_STATE) & KFUSE_STATE_CRCPASS))
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return 0;
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return 1;
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}
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#pragma GCC pop_options
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42
source/soc/kfuse.h
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42
source/soc/kfuse.h
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/*
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* Copyright (c) 2018 naehrwert
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _KFUSE_H_
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#define _KFUSE_H_
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#include "../utils/types.h"
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#define KFUSE_STATE_SOFTRESET (1 << 31)
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#define KFUSE_STATE_STOP (1 << 25)
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#define KFUSE_STATE_RESTART (1 << 24)
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#define KFUSE_STATE_CRCPASS (1 << 17)
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#define KFUSE_STATE_DONE (1 << 16)
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#define KFUSE_STATE_ERRBLOCK_MASK 0x3F00
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#define KFUSE_STATE_ERRBLOCK_SHIFT 8
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#define KFUSE_STATE_CURBLOCK_MASK 0x3F
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#define KFUSE_KEYADDR_AUTOINC (1<<16)
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#define KFUSE_STATE 0x80
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#define KFUSE_KEYADDR 0x88
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#define KFUSE_KEYS 0x8C
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#define KFUSE_NUM_WORDS 144
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int kfuse_read(u32 *buf);
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int kfuse_wait_ready();
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#endif
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