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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2018, STMicroelectronics - All Rights Reserved */ #include <command.h> #include <fuse.h> #include <misc.h> #include <errno.h> #include <dm/device.h> #include <dm/uclass.h> #include <power/stpmic1.h> #define STM32MP_OTP_BANK 0 #define STM32MP_NVM_BANK 1 /* * The 'fuse' command API */ int fuse_read(u32 bank, u32 word, u32 *val) { int ret; struct udevice *dev; switch (bank) { case STM32MP_OTP_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stm32mp_bsec), &dev); if (ret) return ret; ret = misc_read(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET, val, 4); if (ret != 4) ret = -EINVAL; else ret = 0; break; #ifdef CONFIG_PMIC_STPMIC1 case STM32MP_NVM_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stpmic1_nvm), &dev); if (ret) return ret; *val = 0; ret = misc_read(dev, -word, val, 1); if (ret != 1) ret = -EINVAL; else ret = 0; break; #endif /* CONFIG_PMIC_STPMIC1 */ default: printf("stm32mp %s: wrong value for bank %i\n", __func__, bank); ret = -EINVAL; break; } return ret; } int fuse_prog(u32 bank, u32 word, u32 val) { struct udevice *dev; int ret; switch (bank) { case STM32MP_OTP_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stm32mp_bsec), &dev); if (ret) return ret; ret = misc_write(dev, word * 4 + STM32_BSEC_OTP_OFFSET, &val, 4); if (ret != 4) ret = -EINVAL; else ret = 0; break; #ifdef CONFIG_PMIC_STPMIC1 case STM32MP_NVM_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stpmic1_nvm), &dev); if (ret) return ret; ret = misc_write(dev, word, &val, 1); if (ret != 1) ret = -EINVAL; else ret = 0; break; #endif /* CONFIG_PMIC_STPMIC1 */ default: printf("stm32mp %s: wrong value for bank %i\n", __func__, bank); ret = -EINVAL; break; } return ret; } int fuse_sense(u32 bank, u32 word, u32 *val) { struct udevice *dev; int ret; switch (bank) { case STM32MP_OTP_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stm32mp_bsec), &dev); if (ret) return ret; ret = misc_read(dev, word * 4 + STM32_BSEC_OTP_OFFSET, val, 4); if (ret != 4) ret = -EINVAL; else ret = 0; break; #ifdef CONFIG_PMIC_STPMIC1 case STM32MP_NVM_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stpmic1_nvm), &dev); if (ret) return ret; *val = 0; ret = misc_read(dev, word, val, 1); if (ret != 1) ret = -EINVAL; else ret = 0; break; #endif /* CONFIG_PMIC_STPMIC1 */ default: printf("stm32mp %s: wrong value for bank %i\n", __func__, bank); ret = -EINVAL; break; } return ret; } int fuse_override(u32 bank, u32 word, u32 val) { struct udevice *dev; int ret; switch (bank) { case STM32MP_OTP_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stm32mp_bsec), &dev); if (ret) return ret; ret = misc_write(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET, &val, 4); if (ret != 4) ret = -EINVAL; else ret = 0; break; #ifdef CONFIG_PMIC_STPMIC1 case STM32MP_NVM_BANK: ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(stpmic1_nvm), &dev); if (ret) return ret; ret = misc_write(dev, -word, &val, 1); if (ret != 1) ret = -EINVAL; else ret = 0; break; #endif /* CONFIG_PMIC_STPMIC1 */ default: printf("stm32mp %s: wrong value for bank %i\n", __func__, bank); ret = -EINVAL; break; } return ret; } |