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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
- */
- #include <common.h>
- #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;
- }
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