1// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause 2/* 3 * Copyright (C) 2023, STMicroelectronics - All Rights Reserved 4 */ 5 6#include <common.h> 7#include <dfu.h> 8#include <dm.h> 9#include <misc.h> 10#include <asm/arch/stm32prog.h> 11#include <power/stpmic1.h> 12 13static int dfu_otp_read(u64 offset, u8 *buffer, long *size) 14{ 15 struct udevice *dev; 16 int ret; 17 18 ret = uclass_get_device_by_driver(UCLASS_MISC, 19 DM_DRIVER_GET(stm32mp_bsec), 20 &dev); 21 if (ret) 22 return ret; 23 24 ret = misc_read(dev, offset + STM32_BSEC_OTP_OFFSET, buffer, *size); 25 if (ret >= 0) { 26 *size = ret; 27 ret = 0; 28 } 29 30 return 0; 31} 32 33static int dfu_pmic_read(u64 offset, u8 *buffer, long *size) 34{ 35 int ret; 36 struct udevice *dev; 37 38 if (!IS_ENABLED(CONFIG_PMIC_STPMIC1)) { 39 log_err("PMIC update not supported"); 40 return -EOPNOTSUPP; 41 } 42 43 ret = uclass_get_device_by_driver(UCLASS_MISC, 44 DM_DRIVER_GET(stpmic1_nvm), 45 &dev); 46 if (ret) 47 return ret; 48 49 ret = misc_read(dev, 0xF8 + offset, buffer, *size); 50 if (ret >= 0) { 51 *size = ret; 52 ret = 0; 53 } 54 if (ret == -EACCES) { 55 *size = 0; 56 ret = 0; 57 } 58 59 return ret; 60} 61 62int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset, 63 void *buf, long *len) 64{ 65 switch (dfu->data.virt.dev_num) { 66 case 0x0: 67 return dfu_otp_read(offset, buf, len); 68 case 0x1: 69 return dfu_pmic_read(offset, buf, len); 70 } 71 72 if (IS_ENABLED(CONFIG_CMD_STM32PROG_USB) && 73 dfu->data.virt.dev_num >= STM32PROG_VIRT_FIRST_DEV_NUM) 74 return stm32prog_read_medium_virt(dfu, offset, buf, len); 75 76 *len = 0; 77 return 0; 78} 79 80int dfu_write_medium_virt(struct dfu_entity *dfu, u64 offset, 81 void *buf, long *len) 82{ 83 if (IS_ENABLED(CONFIG_CMD_STM32PROG_USB) && 84 dfu->data.virt.dev_num >= STM32PROG_VIRT_FIRST_DEV_NUM) 85 return stm32prog_write_medium_virt(dfu, offset, buf, len); 86 87 return -EOPNOTSUPP; 88} 89 90int dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size) 91{ 92 if (IS_ENABLED(CONFIG_CMD_STM32PROG_USB) && 93 dfu->data.virt.dev_num >= STM32PROG_VIRT_FIRST_DEV_NUM) 94 return stm32prog_get_medium_size_virt(dfu, size); 95 96 *size = SZ_1K; 97 98 return 0; 99} 100