~kameliya/u-boot

ref: ad7e1c7c6e2bde2b369f10984d41d6b1833453fb u-boot/board/st/common/stm32mp_mtdparts.c -rw-r--r-- 3.7 KiB
ad7e1c7c — Tom Rini Merge https://source.denx.de/u-boot/custodians/u-boot-marvell 4 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
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
 * Copyright (C) 2020, STMicroelectronics - All Rights Reserved
 */

#include <common.h>
#include <dfu.h>
#include <dm.h>
#include <env.h>
#include <env_internal.h>
#include <log.h>
#include <mtd.h>
#include <mtd_node.h>
#include <tee.h>
#include <asm/arch/stm32prog.h>
#include <asm/arch/sys_proto.h>
#include <asm/global_data.h>

#define MTDPARTS_LEN		256
#define MTDIDS_LEN		128

/*
 * Get a global data pointer
 */
DECLARE_GLOBAL_DATA_PTR;

/**
 * update the variables "mtdids" and "mtdparts" with boot, tee and user strings
 */
static void board_set_mtdparts(const char *dev,
			       char *mtdids,
			       char *mtdparts,
			       const char *boot,
			       const char *tee,
			       const char *user)
{
	/* mtdids: "<dev>=<dev>, ...." */
	if (mtdids[0] != '\0')
		strcat(mtdids, ",");
	strcat(mtdids, dev);
	strcat(mtdids, "=");
	strcat(mtdids, dev);

	/* mtdparts: "mtdparts=<dev>:<mtdparts_<dev>>;..." */
	if (mtdparts[0] != '\0')
		strncat(mtdparts, ";", MTDPARTS_LEN);
	else
		strcat(mtdparts, "mtdparts=");

	strncat(mtdparts, dev, MTDPARTS_LEN);
	strncat(mtdparts, ":", MTDPARTS_LEN);

	if (boot) {
		strncat(mtdparts, boot, MTDPARTS_LEN);
		strncat(mtdparts, ",", MTDPARTS_LEN);
	}

	if (tee) {
		strncat(mtdparts, tee, MTDPARTS_LEN);
		strncat(mtdparts, ",", MTDPARTS_LEN);
	}

	strncat(mtdparts, user, MTDPARTS_LEN);
}

void board_mtdparts_default(const char **mtdids, const char **mtdparts)
{
	struct mtd_info *mtd;
	struct udevice *dev;
	static char parts[3 * MTDPARTS_LEN + 1];
	static char ids[MTDIDS_LEN + 1];
	static bool mtd_initialized;
	bool tee, nor, nand, spinand, serial;

	if (mtd_initialized) {
		*mtdids = ids;
		*mtdparts = parts;
		return;
	}

	tee = false;
	nor = false;
	nand = false;
	spinand = false;
	serial = false;

	switch (get_bootmode() & TAMP_BOOT_DEVICE_MASK) {
	case BOOT_SERIAL_UART:
	case BOOT_SERIAL_USB:
		serial = true;
		if (CONFIG_IS_ENABLED(CMD_STM32PROG)) {
			tee = stm32prog_get_tee_partitions();
			nor = stm32prog_get_fsbl_nor();
		}
		nand = true;
		spinand = true;
		break;
	case BOOT_FLASH_NAND:
		nand = true;
		break;
	case BOOT_FLASH_SPINAND:
		spinand = true;
		break;
	case BOOT_FLASH_NOR:
		nor = true;
		break;
	default:
		break;
	}

	if (!serial && CONFIG_IS_ENABLED(OPTEE) &&
	    tee_find_device(NULL, NULL, NULL, NULL))
		tee = true;

	memset(parts, 0, sizeof(parts));
	memset(ids, 0, sizeof(ids));

	/* probe all MTD devices */
	for (uclass_first_device(UCLASS_MTD, &dev);
	     dev;
	     uclass_next_device(&dev)) {
		log_debug("mtd device = %s\n", dev->name);
	}

	if (nor || nand) {
		mtd = get_mtd_device_nm("nand0");
		if (!IS_ERR_OR_NULL(mtd)) {
			const char *mtd_boot = CONFIG_MTDPARTS_NAND0_BOOT;
			const char *mtd_tee = CONFIG_MTDPARTS_NAND0_TEE;

			board_set_mtdparts("nand0", ids, parts,
					   !nor ? mtd_boot : NULL,
					   !nor && tee ? mtd_tee : NULL,
					   "-(UBI)");
			put_mtd_device(mtd);
		}
	}

	if (nor || spinand) {
		mtd = get_mtd_device_nm("spi-nand0");
		if (!IS_ERR_OR_NULL(mtd)) {
			const char *mtd_boot = CONFIG_MTDPARTS_SPINAND0_BOOT;
			const char *mtd_tee = CONFIG_MTDPARTS_SPINAND0_TEE;

			board_set_mtdparts("spi-nand0", ids, parts,
					   !nor ? mtd_boot : NULL,
					   !nor && tee ? mtd_tee : NULL,
					   "-(UBI)");
			put_mtd_device(mtd);
		}
	}

	if (nor) {
		if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev)) {
			const char *mtd_boot = CONFIG_MTDPARTS_NOR0_BOOT;
			const char *mtd_tee = CONFIG_MTDPARTS_NOR0_TEE;

			board_set_mtdparts("nor0", ids, parts,
					   mtd_boot,
					   tee ? mtd_tee : NULL,
					   "-(nor_user)");
		}
	}

	mtd_initialized = true;
	*mtdids = ids;
	*mtdparts = parts;
	log_debug("mtdids=%s & mtdparts=%s\n", ids, parts);
}