mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-15 15:53:02 +00:00
3b44b3fdf2
This patch implements LD eFuse programming support. Armada 385 contains two
LD eFuse lines, each is 256 bit long with one additional lock bit. LD 0
line is mapped to U-Boot fuse bank 64 and LD 1 line to fuse bank 65. U-Boot
32-bit fuse words 0-8 are mapped to LD eFuse line bits 0-255. U-Boot fuse
word 9 is mapped to LD eFuse line lock bit.
So to program LD 1 General Purpose Data line, use U-Boot fuse command:
=> fuse prog -y 65 0 0x76543210
=> fuse prog -y 65 1 0xfedcba98
=> fuse prog -y 65 2 0x76543210
=> fuse prog -y 65 3 0xfedcba98
=> fuse prog -y 65 4 0x76543210
=> fuse prog -y 65 5 0xfedcba98
=> fuse prog -y 65 6 0x76543210
=> fuse prog -y 65 7 0xfedcba98
=> fuse prog -y 65 8 0x1
Signed-off-by: Pali Rohár <pali@kernel.org>
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2015 Reinhard Pfau <reinhard.pfau@gdsys.cc>
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*/
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#ifndef _MVEBU_EFUSE_H
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#define _MVEBU_EFUSE_H
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#include <common.h>
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struct efuse_val {
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union {
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struct {
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u8 d[8];
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} bytes;
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struct {
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u16 d[4];
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} words;
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struct {
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u32 d[2];
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} dwords;
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};
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u32 lock;
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};
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#if defined(CONFIG_ARMADA_38X)
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enum efuse_line {
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EFUSE_LINE_SECURE_BOOT = 24,
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EFUSE_LINE_PUBKEY_DIGEST_0 = 26,
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EFUSE_LINE_PUBKEY_DIGEST_1 = 27,
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EFUSE_LINE_PUBKEY_DIGEST_2 = 28,
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EFUSE_LINE_PUBKEY_DIGEST_3 = 29,
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EFUSE_LINE_PUBKEY_DIGEST_4 = 30,
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EFUSE_LINE_CSK_0_VALID = 31,
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EFUSE_LINE_CSK_1_VALID = 32,
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EFUSE_LINE_CSK_2_VALID = 33,
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EFUSE_LINE_CSK_3_VALID = 34,
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EFUSE_LINE_CSK_4_VALID = 35,
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EFUSE_LINE_CSK_5_VALID = 36,
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EFUSE_LINE_CSK_6_VALID = 37,
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EFUSE_LINE_CSK_7_VALID = 38,
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EFUSE_LINE_CSK_8_VALID = 39,
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EFUSE_LINE_CSK_9_VALID = 40,
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EFUSE_LINE_CSK_10_VALID = 41,
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EFUSE_LINE_CSK_11_VALID = 42,
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EFUSE_LINE_CSK_12_VALID = 43,
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EFUSE_LINE_CSK_13_VALID = 44,
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EFUSE_LINE_CSK_14_VALID = 45,
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EFUSE_LINE_CSK_15_VALID = 46,
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EFUSE_LINE_FLASH_ID = 47,
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EFUSE_LINE_BOX_ID = 48,
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EFUSE_LINE_MIN = 0,
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EFUSE_LINE_MAX = 63,
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EFUSE_LD0_LINE = 64,
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EFUSE_LD1_LINE = 65,
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};
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#define EFUSE_LD_WORDS 9
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#endif
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int mvebu_efuse_init_hw(void);
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int mvebu_read_efuse(int nr, struct efuse_val *val);
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int mvebu_write_efuse(int nr, struct efuse_val *val);
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int mvebu_lock_efuse(int nr);
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void mvebu_read_ld_efuse(int ld1, u32 *line);
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int mvebu_prog_ld_efuse(int ld1, u32 word, u32 val);
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#endif
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