arch/arm/mach-mvebu/include/mach/efuse.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright (C) 2015 Reinhard Pfau <reinhard.pfau@gdsys.cc>
   4  */
   5
   6 #ifndef _MVEBU_EFUSE_H
   7 #define _MVEBU_EFUSE_H
   8
   9 #include <common.h>
  10
  11 struct efuse_val {
  12         union {
  13                 struct {
  14                         u8 d[8];
  15                 } bytes;
  16                 struct {
  17                         u16 d[4];
  18                 } words;
  19                 struct {
  20                         u32 d[2];
  21                 } dwords;
  22         };
  23         u32 lock;
  24 };
  25
  26 #if defined(CONFIG_ARMADA_38X)
  27
  28 enum efuse_line {
  29         EFUSE_LINE_SECURE_BOOT = 24,
  30         EFUSE_LINE_PUBKEY_DIGEST_0 = 26,
  31         EFUSE_LINE_PUBKEY_DIGEST_1 = 27,
  32         EFUSE_LINE_PUBKEY_DIGEST_2 = 28,
  33         EFUSE_LINE_PUBKEY_DIGEST_3 = 29,
  34         EFUSE_LINE_PUBKEY_DIGEST_4 = 30,
  35         EFUSE_LINE_CSK_0_VALID = 31,
  36         EFUSE_LINE_CSK_1_VALID = 32,
  37         EFUSE_LINE_CSK_2_VALID = 33,
  38         EFUSE_LINE_CSK_3_VALID = 34,
  39         EFUSE_LINE_CSK_4_VALID = 35,
  40         EFUSE_LINE_CSK_5_VALID = 36,
  41         EFUSE_LINE_CSK_6_VALID = 37,
  42         EFUSE_LINE_CSK_7_VALID = 38,
  43         EFUSE_LINE_CSK_8_VALID = 39,
  44         EFUSE_LINE_CSK_9_VALID = 40,
  45         EFUSE_LINE_CSK_10_VALID = 41,
  46         EFUSE_LINE_CSK_11_VALID = 42,
  47         EFUSE_LINE_CSK_12_VALID = 43,
  48         EFUSE_LINE_CSK_13_VALID = 44,
  49         EFUSE_LINE_CSK_14_VALID = 45,
  50         EFUSE_LINE_CSK_15_VALID = 46,
  51         EFUSE_LINE_FLASH_ID = 47,
  52         EFUSE_LINE_BOX_ID = 48,
  53
  54         EFUSE_LINE_MIN = 0,
  55         EFUSE_LINE_MAX = 63,
  56 };
  57
  58 #endif
  59
  60 int mvebu_efuse_init_hw(void);
  61
  62 int mvebu_read_efuse(int nr, struct efuse_val *val);
  63
  64 int mvebu_write_efuse(int nr, struct efuse_val *val);
  65
  66 int mvebu_lock_efuse(int nr);
  67
  68 #endif