aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-uniphier/boot-device/boot-device.c
blob: 98ff34cfa7130b588cfa73283b1cd58108a12868 (plain)
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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2015-2017 Socionext Inc.
 *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
 */

#include <command.h>
#include <spl.h>
#include <stdio.h>
#include <linux/bitops.h>
#include <linux/bug.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/log2.h>

#include "../init.h"
#include "../sg-regs.h"
#include "../soc-info.h"
#include "boot-device.h"

#define SBBASE0			0x58c00100
#define SBBASE_BANK_ENABLE		BIT(0)

static int uniphier_sbc_boot_is_swapped(void)
{
	return !(readl(SBBASE0) & SBBASE_BANK_ENABLE);
}

struct uniphier_boot_device_info {
	unsigned int soc_id;
	unsigned int boot_device_sel_shift;
	const struct uniphier_boot_device *boot_device_table;
	const unsigned int *boot_device_count;
	int (*boot_device_is_sd)(u32 pinmon);
	int (*boot_device_is_usb)(u32 pinmon);
	unsigned int (*boot_device_fixup)(unsigned int mode);
	int (*boot_is_swapped)(void);
	bool have_internal_stm;
};

static const struct uniphier_boot_device_info uniphier_boot_device_info[] = {
#if defined(CONFIG_ARCH_UNIPHIER_LD4)
	{
		.soc_id = UNIPHIER_LD4_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_ld4_boot_device_table,
		.boot_device_count = &uniphier_ld4_boot_device_count,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = true,
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PRO4)
	{
		.soc_id = UNIPHIER_PRO4_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_ld4_boot_device_table,
		.boot_device_count = &uniphier_ld4_boot_device_count,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = false,
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_SLD8)
	{
		.soc_id = UNIPHIER_SLD8_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_ld4_boot_device_table,
		.boot_device_count = &uniphier_ld4_boot_device_count,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = true,
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PRO5)
	{
		.soc_id = UNIPHIER_PRO5_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_pro5_boot_device_table,
		.boot_device_count = &uniphier_pro5_boot_device_count,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = false,
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PXS2)
	{
		.soc_id = UNIPHIER_PXS2_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_pxs2_boot_device_table,
		.boot_device_count = &uniphier_pxs2_boot_device_count,
		.boot_device_is_usb = uniphier_pxs2_boot_device_is_usb,
		.boot_device_fixup = uniphier_pxs2_boot_device_fixup,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = false,
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD6B)
	{
		.soc_id = UNIPHIER_LD6B_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_pxs2_boot_device_table,
		.boot_device_count = &uniphier_pxs2_boot_device_count,
		.boot_device_is_usb = uniphier_pxs2_boot_device_is_usb,
		.boot_device_fixup = uniphier_pxs2_boot_device_fixup,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = true,	/* STM on A-chip */
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD11)
	{
		.soc_id = UNIPHIER_LD11_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_ld11_boot_device_table,
		.boot_device_count = &uniphier_ld11_boot_device_count,
		.boot_device_is_usb = uniphier_ld11_boot_device_is_usb,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = true,
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD20)
	{
		.soc_id = UNIPHIER_LD20_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_ld11_boot_device_table,
		.boot_device_count = &uniphier_ld11_boot_device_count,
		.boot_device_is_usb = uniphier_ld20_boot_device_is_usb,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = true,
	},
#endif
#if defined(CONFIG_ARCH_UNIPHIER_PXS3)
	{
		.soc_id = UNIPHIER_PXS3_ID,
		.boot_device_sel_shift = 1,
		.boot_device_table = uniphier_pxs3_boot_device_table,
		.boot_device_count = &uniphier_pxs3_boot_device_count,
		.boot_device_is_usb = uniphier_pxs3_boot_device_is_usb,
		.boot_is_swapped = uniphier_sbc_boot_is_swapped,
		.have_internal_stm = false,
	},
#endif
};
UNIPHIER_DEFINE_SOCDATA_FUNC(uniphier_get_boot_device_info,
			     uniphier_boot_device_info)

static unsigned int __uniphier_boot_device_raw(
				const struct uniphier_boot_device_info *info)
{
	u32 pinmon;
	unsigned int boot_sel;

	if (info->boot_is_swapped && info->boot_is_swapped())
		return BOOT_DEVICE_NOR;

	pinmon = readl(sg_base + SG_PINMON0);

	if (info->boot_device_is_sd && info->boot_device_is_sd(pinmon))
		return BOOT_DEVICE_MMC2;

	if (info->boot_device_is_usb && info->boot_device_is_usb(pinmon))
		return BOOT_DEVICE_USB;

	boot_sel = pinmon >> info->boot_device_sel_shift;

	BUG_ON(!is_power_of_2(*info->boot_device_count));
	boot_sel &= *info->boot_device_count - 1;

	return info->boot_device_table[boot_sel].boot_device;
}

unsigned int uniphier_boot_device_raw(void)
{
	const struct uniphier_boot_device_info *info;

	info = uniphier_get_boot_device_info();
	if (!info) {
		pr_err("unsupported SoC\n");
		return BOOT_DEVICE_NONE;
	}

	return __uniphier_boot_device_raw(info);
}

u32 spl_boot_device(void)
{
	const struct uniphier_boot_device_info *info;
	u32 raw_mode;

	info = uniphier_get_boot_device_info();
	if (!info) {
		pr_err("unsupported SoC\n");
		return BOOT_DEVICE_NONE;
	}

	raw_mode = __uniphier_boot_device_raw(info);

	return info->boot_device_fixup ?
				info->boot_device_fixup(raw_mode) : raw_mode;
}

int uniphier_have_internal_stm(void)
{
	const struct uniphier_boot_device_info *info;

	info = uniphier_get_boot_device_info();
	if (!info) {
		pr_err("unsupported SoC\n");
		return -ENOTSUPP;
	}

	return info->have_internal_stm;
}

int uniphier_boot_from_backend(void)
{
	return !!(readl(sg_base + SG_PINMON0) & BIT(27));
}

#ifndef CONFIG_SPL_BUILD

static int do_pinmon(struct cmd_tbl *cmdtp, int flag, int argc,
		     char *const argv[])
{
	const struct uniphier_boot_device_info *info;
	u32 pinmon;
	unsigned int boot_device_count, boot_sel;
	int i;

	info = uniphier_get_boot_device_info();
	if (!info) {
		pr_err("unsupported SoC\n");
		return CMD_RET_FAILURE;
	}

	if (uniphier_have_internal_stm())
		printf("STB Micon: %s\n",
		       uniphier_boot_from_backend() ? "OFF" : "ON");

	if (info->boot_is_swapped)
		printf("Boot Swap: %s\n",
		       info->boot_is_swapped() ? "ON" : "OFF");

	pinmon = readl(sg_base + SG_PINMON0);

	if (info->boot_device_is_sd)
		printf("SD Boot:  %s\n",
		       info->boot_device_is_sd(pinmon) ? "ON" : "OFF");

	if (info->boot_device_is_usb)
		printf("USB Boot:  %s\n",
		       info->boot_device_is_usb(pinmon) ? "ON" : "OFF");

	boot_device_count = *info->boot_device_count;

	boot_sel = pinmon >> info->boot_device_sel_shift;
	boot_sel &= boot_device_count - 1;

	printf("\nBoot Mode Sel:\n");
	for (i = 0; i < boot_device_count; i++)
		printf(" %c %02x %s\n", i == boot_sel ? '*' : ' ', i,
		       info->boot_device_table[i].desc);

	return CMD_RET_SUCCESS;
}

U_BOOT_CMD(
	pinmon,	1,	1,	do_pinmon,
	"pin monitor",
	""
);

#endif /* !CONFIG_SPL_BUILD */