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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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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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	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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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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	if (!kfuse_wait_ready())
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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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