~kameliya/u-boot

ref: e8a10a02bd9ce6988942c393373d89dee5704c59 u-boot/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_usb.c -rw-r--r-- 5.1 KiB
e8a10a02 — Tom Rini Merge tag 'u-boot-stm32-20210312' of https://source.denx.de/u-boot/custodians/u-boot-stm 7 months ago
                                                                                
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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
 * Copyright (C) 2020, STMicroelectronics - All Rights Reserved
 */

#include <common.h>
#include <dfu.h>
#include <g_dnl.h>
#include <usb.h>
#include <asm/arch/stm32prog.h>
#include <asm/arch/sys_proto.h>
#include "stm32prog.h"

static int stm32prog_set_phase(struct stm32prog_data *data, u8 phase,
			       u32 offset)
{
	struct stm32prog_part_t *part;
	int i;

	if (phase == data->phase) {
		data->offset = offset;
		data->dfu_seq = 0;
		return 0;
	}

	/* found partition for phase */
	for (i = 0; i < data->part_nb; i++) {
		part = &data->part_array[i];
		if (part->id == phase) {
			data->cur_part = part;
			data->phase = phase;
			data->offset = offset;
			data->dfu_seq = 0;
			return 0;
		}
	}

	return  -EINVAL;
}

static int stm32prog_cmd_write(u64 offset, void *buf, long *len)
{
	u8 phase;
	u32 address;
	u8 *pt = buf;
	void (*entry)(void);
	int ret;

	if (*len < 5) {
		log_err("size not allowed\n");
		return  -EINVAL;
	}
	if (offset) {
		log_err("invalid offset\n");
		return  -EINVAL;
	}
	phase = pt[0];
	address = (pt[1] << 24) | (pt[2] << 16) | (pt[3] << 8) | pt[4];
	if (phase == PHASE_RESET) {
		entry = (void *)address;
		printf("## Starting application at 0x%x ...\n", address);
		(*entry)();
		printf("## Application terminated\n");
		return 0;
	}
	/* set phase and offset */
	ret = stm32prog_set_phase(stm32prog_data, phase, address);
	if (ret)
		log_err("failed: %d\n", ret);
	return ret;
}

#define PHASE_MIN_SIZE	9
static int stm32prog_cmd_read(u64 offset, void *buf, long *len)
{
	u32 destination = DEFAULT_ADDRESS; /* destination address */
	u32 dfu_offset;
	u8 *pt_buf = buf;
	int phase;
	char *err_msg;
	int length;

	if (*len < PHASE_MIN_SIZE) {
		log_err("request exceeds allowed area\n");
		return  -EINVAL;
	}
	if (offset) {
		*len = 0; /* EOF for second request */
		return 0;
	}
	phase = stm32prog_data->phase;
	if (phase == PHASE_FLASHLAYOUT)
		destination = STM32_DDR_BASE;
	dfu_offset = stm32prog_data->offset;

	/* mandatory header, size = PHASE_MIN_SIZE */
	*pt_buf++ = (u8)(phase & 0xFF);
	*pt_buf++ = (u8)(destination);
	*pt_buf++ = (u8)(destination >> 8);
	*pt_buf++ = (u8)(destination >> 16);
	*pt_buf++ = (u8)(destination >> 24);
	*pt_buf++ = (u8)(dfu_offset);
	*pt_buf++ = (u8)(dfu_offset >> 8);
	*pt_buf++ = (u8)(dfu_offset >> 16);
	*pt_buf++ = (u8)(dfu_offset >> 24);

	if (phase == PHASE_RESET || phase == PHASE_DO_RESET) {
		err_msg = stm32prog_get_error(stm32prog_data);
		length = strlen(err_msg);
		if (length + PHASE_MIN_SIZE > *len)
			length = *len - PHASE_MIN_SIZE;

		memcpy(pt_buf, err_msg, length);
		*len = PHASE_MIN_SIZE + length;
		stm32prog_do_reset(stm32prog_data);
	} else if (phase == PHASE_FLASHLAYOUT) {
		*pt_buf++ = stm32prog_data->part_nb ? 1 : 0;
		*len = PHASE_MIN_SIZE + 1;
	} else {
		*len = PHASE_MIN_SIZE;
	}

	return 0;
}

int stm32prog_write_medium_virt(struct dfu_entity *dfu, u64 offset,
				void *buf, long *len)
{
	if (dfu->dev_type != DFU_DEV_VIRT)
		return -EINVAL;

	switch (dfu->data.virt.dev_num) {
	case PHASE_CMD:
		return stm32prog_cmd_write(offset, buf, len);

	case PHASE_OTP:
		return stm32prog_otp_write(stm32prog_data, (u32)offset,
					   buf, len);

	case PHASE_PMIC:
		return stm32prog_pmic_write(stm32prog_data, (u32)offset,
					    buf, len);
	}
	*len = 0;
	return 0;
}

int stm32prog_read_medium_virt(struct dfu_entity *dfu, u64 offset,
			       void *buf, long *len)
{
	if (dfu->dev_type != DFU_DEV_VIRT)
		return -EINVAL;

	switch (dfu->data.virt.dev_num) {
	case PHASE_CMD:
		return stm32prog_cmd_read(offset, buf, len);

	case PHASE_OTP:
		return stm32prog_otp_read(stm32prog_data, (u32)offset,
					  buf, len);

	case PHASE_PMIC:
		return stm32prog_pmic_read(stm32prog_data, (u32)offset,
					   buf, len);
	}
	*len = 0;
	return 0;
}

int stm32prog_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
{
	if (dfu->dev_type != DFU_DEV_VIRT) {
		*size = 0;
		log_debug("%s, invalid dev_type = %d\n",
			  __func__, dfu->dev_type);
		return -EINVAL;
	}

	switch (dfu->data.virt.dev_num) {
	case PHASE_CMD:
		*size = 512;
		break;
	case PHASE_OTP:
		*size = OTP_SIZE;
		break;
	case PHASE_PMIC:
		*size = PMIC_SIZE;
		break;
	}

	return 0;
}

bool stm32prog_usb_loop(struct stm32prog_data *data, int dev)
{
	int ret;
	bool result;
	/* USB download gadget for STM32 Programmer */
	char product[128];
	char name[SOC_NAME_SIZE];

	get_soc_name(name);
	snprintf(product, sizeof(product),
		 "USB download gadget@Device ID /0x%03X, @Revision ID /0x%04X, @Name /%s,",
		 get_cpu_dev(), get_cpu_rev(), name);
	g_dnl_set_product(product);

	if (stm32prog_data->phase == PHASE_FLASHLAYOUT) {
		ret = run_usb_dnl_gadget(dev, "usb_dnl_dfu");
		if (ret || stm32prog_data->phase == PHASE_DO_RESET)
			return ret;
		/* prepare the second enumeration with the FlashLayout */
		if (stm32prog_data->phase == PHASE_FLASHLAYOUT)
			stm32prog_dfu_init(data);
		/* found next selected partition */
		stm32prog_next_phase(data);
	}

	ret = run_usb_dnl_gadget(dev, "usb_dnl_dfu");

	result = !!(ret) || (stm32prog_data->phase == PHASE_DO_RESET);

	g_dnl_set_product(NULL);

	return result;
}

int g_dnl_get_board_bcd_device_number(int gcnum)
{
	log_debug("%s\n", __func__);
	return 0x200;
}