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