112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
/*
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* Copyright 2017 NXP
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*
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* SPDX-License-Identifier: GPL-2.0+
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*
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*/
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#include <common.h>
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#include <errno.h>
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#include <asm/io.h>
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#include <console.h>
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#include <fuse.h>
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#include <asm/mach-imx/sci/sci.h>
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#include <asm/arch/sys_proto.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define FSL_ECC_WORD_START_1 0x10
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#define FSL_ECC_WORD_END_1 0x10F
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#ifdef CONFIG_IMX8QM
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#define FSL_ECC_WORD_START_2 0x1A0
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#define FSL_ECC_WORD_END_2 0x1FF
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#endif
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#ifdef CONFIG_IMX8QXP
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#define FSL_ECC_WORD_START_2 0x220
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#define FSL_ECC_WORD_END_2 0x31F
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#define FSL_QXP_FUSE_GAP_START 0x110
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#define FSL_QXP_FUSE_GAP_END 0x21F
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#endif
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#define FSL_SIP_OTP_READ 0xc200000A
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#define FSL_SIP_OTP_WRITE 0xc200000B
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int fuse_read(u32 bank, u32 word, u32 *val)
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{
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return fuse_sense(bank, word, val);
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}
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int fuse_sense(u32 bank, u32 word, u32 *val)
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{
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if (bank != 0) {
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printf("Invalid bank argument, ONLY bank 0 is supported\n");
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return -EINVAL;
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}
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#if defined(CONFIG_SMC_FUSE)
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unsigned long ret = 0, value = 0;
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ret = call_imx_sip_ret2(FSL_SIP_OTP_READ, (unsigned long)word,
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&value, 0, 0);
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*val = (u32)value;
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return ret;
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#else
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sc_err_t err;
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sc_ipc_t ipc;
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ipc = gd->arch.ipc_channel_handle;
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err = sc_misc_otp_fuse_read(ipc, word, val);
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if (err != SC_ERR_NONE) {
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printf("fuse read error: %d\n", err);
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return -EIO;
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}
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return 0;
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#endif
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}
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int fuse_prog(u32 bank, u32 word, u32 val)
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{
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if (bank != 0) {
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printf("Invalid bank argument, ONLY bank 0 is supported\n");
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return -EINVAL;
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}
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#ifdef CONFIG_IMX8QXP
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if ((word >= FSL_QXP_FUSE_GAP_START) && (word <= FSL_QXP_FUSE_GAP_END)) {
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printf("Invalid word argument for this SoC\n");
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return -EINVAL;
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}
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#endif
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if (((word >= FSL_ECC_WORD_START_1) && (word <= FSL_ECC_WORD_END_1)) ||
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((word >= FSL_ECC_WORD_START_2) && (word <= FSL_ECC_WORD_END_2)))
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{
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puts("Warning: Words in this index range have ECC protection and\n"
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"can only be programmed once per word. Individual bit operations will\n"
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"be rejected after the first one. \n"
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"\n\n Really program this word? <y/N> \n");
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if(!confirm_yesno()) {
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puts("Word programming aborted\n");
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return -EPERM;
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}
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}
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#if defined(CONFIG_SMC_FUSE)
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return call_imx_sip(FSL_SIP_OTP_WRITE, (unsigned long)word,\
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(unsigned long)val, 0, 0);
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#else
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printf("Program fuse to i.MX8 in u-boot is forbidden\n");
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return -EPERM;
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#endif
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}
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int fuse_override(u32 bank, u32 word, u32 val)
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{
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printf("Override fuse to i.MX8 in u-boot is forbidden\n");
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return -EPERM;
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}
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