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5894ca00 | 1 | /* |
499c8679 MY |
2 | * Copyright (C) 2012-2015 Panasonic Corporation |
3 | * Copyright (C) 2015-2016 Socionext Inc. | |
4 | * Author: Masahiro Yamada <yamada.masahiro@socionext.com> | |
5894ca00 MY |
5 | * |
6 | * SPDX-License-Identifier: GPL-2.0+ | |
7 | */ | |
8 | ||
9 | #include <common.h> | |
8469700b | 10 | #include <linux/ctype.h> |
f6e7f07c | 11 | #include <linux/io.h> |
107b3fb4 MY |
12 | |
13 | #include "micro-support-card.h" | |
5894ca00 | 14 | |
d7728aa4 MY |
15 | #define MICRO_SUPPORT_CARD_BASE 0x43f00000 |
16 | #define SMC911X_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x00000) | |
17 | #define LED_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x90000) | |
18 | #define NS16550A_BASE ((MICRO_SUPPORT_CARD_BASE) + 0xb0000) | |
19 | #define MICRO_SUPPORT_CARD_RESET ((MICRO_SUPPORT_CARD_BASE) + 0xd0034) | |
20 | #define MICRO_SUPPORT_CARD_REVISION ((MICRO_SUPPORT_CARD_BASE) + 0xd00E0) | |
21 | ||
5894ca00 MY |
22 | /* |
23 | * 0: reset deassert, 1: reset | |
24 | * | |
25 | * bit[0]: LAN, I2C, LED | |
26 | * bit[1]: UART | |
27 | */ | |
ef07a99b | 28 | static void support_card_reset_deassert(void) |
5894ca00 | 29 | { |
36223f5d | 30 | writel(0x00010000, MICRO_SUPPORT_CARD_RESET); |
5894ca00 MY |
31 | } |
32 | ||
ef07a99b | 33 | static void support_card_reset(void) |
5894ca00 | 34 | { |
36223f5d | 35 | writel(0x00020003, MICRO_SUPPORT_CARD_RESET); |
5894ca00 MY |
36 | } |
37 | ||
38 | static int support_card_show_revision(void) | |
39 | { | |
40 | u32 revision; | |
41 | ||
9879842c | 42 | revision = readl(MICRO_SUPPORT_CARD_REVISION); |
499c8679 MY |
43 | revision &= 0xff; |
44 | ||
45 | /* revision 3.6.x card changed the revision format */ | |
46 | printf("(CPLD version %s%d.%d)\n", revision >> 4 == 6 ? "3." : "", | |
47 | revision >> 4, revision & 0xf); | |
48 | ||
5894ca00 MY |
49 | return 0; |
50 | } | |
5894ca00 | 51 | |
43a8cc90 | 52 | int checkboard(void) |
7a3620b2 MY |
53 | { |
54 | printf("SC: Micro Support Card "); | |
55 | return support_card_show_revision(); | |
56 | } | |
57 | ||
5894ca00 MY |
58 | void support_card_init(void) |
59 | { | |
ef07a99b | 60 | support_card_reset(); |
5894ca00 MY |
61 | /* |
62 | * After power on, we need to keep the LAN controller in reset state | |
63 | * for a while. (200 usec) | |
5894ca00 | 64 | */ |
66e3efeb | 65 | udelay(200); |
5894ca00 MY |
66 | support_card_reset_deassert(); |
67 | } | |
68 | ||
5894ca00 MY |
69 | #if defined(CONFIG_SMC911X) |
70 | #include <netdev.h> | |
71 | ||
72 | int board_eth_init(bd_t *bis) | |
73 | { | |
d7728aa4 | 74 | return smc911x_initialize(0, SMC911X_BASE); |
5894ca00 MY |
75 | } |
76 | #endif | |
77 | ||
e856bdcf | 78 | #if defined(CONFIG_MTD_NOR_FLASH) |
5894ca00 MY |
79 | |
80 | #include <mtd/cfi_flash.h> | |
81 | ||
7a3620b2 MY |
82 | struct memory_bank { |
83 | phys_addr_t base; | |
84 | unsigned long size; | |
85 | }; | |
5894ca00 | 86 | |
7a3620b2 | 87 | static int mem_is_flash(const struct memory_bank *mem) |
5894ca00 MY |
88 | { |
89 | const int loop = 128; | |
90 | u32 *scratch_addr; | |
91 | u32 saved_value; | |
92 | int ret = 1; | |
93 | int i; | |
94 | ||
7a3620b2 MY |
95 | /* just in case, use the tail of the memory bank */ |
96 | scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop, | |
97 | sizeof(u32) * loop, MAP_NOCACHE); | |
5894ca00 MY |
98 | |
99 | for (i = 0; i < loop; i++, scratch_addr++) { | |
100 | saved_value = readl(scratch_addr); | |
101 | writel(~saved_value, scratch_addr); | |
102 | if (readl(scratch_addr) != saved_value) { | |
103 | /* We assume no memory or SRAM here. */ | |
104 | writel(saved_value, scratch_addr); | |
105 | ret = 0; | |
106 | break; | |
107 | } | |
108 | } | |
109 | ||
110 | unmap_physmem(scratch_addr, MAP_NOCACHE); | |
111 | ||
112 | return ret; | |
113 | } | |
114 | ||
9879842c MY |
115 | /* {address, size} */ |
116 | static const struct memory_bank memory_banks[] = { | |
d5ed8c57 | 117 | {0x42000000, 0x01f00000}, |
7a3620b2 MY |
118 | }; |
119 | ||
7a3620b2 MY |
120 | static const struct memory_bank |
121 | *flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT]; | |
122 | ||
123 | phys_addr_t cfi_flash_bank_addr(int i) | |
5894ca00 | 124 | { |
7a3620b2 MY |
125 | return flash_banks_list[i]->base; |
126 | } | |
5894ca00 | 127 | |
7a3620b2 MY |
128 | unsigned long cfi_flash_bank_size(int i) |
129 | { | |
130 | return flash_banks_list[i]->size; | |
131 | } | |
132 | ||
133 | static void detect_num_flash_banks(void) | |
134 | { | |
135 | const struct memory_bank *memory_bank, *end; | |
136 | ||
137 | cfi_flash_num_flash_banks = 0; | |
138 | ||
9879842c MY |
139 | memory_bank = memory_banks; |
140 | end = memory_bank + ARRAY_SIZE(memory_banks); | |
7a3620b2 MY |
141 | |
142 | for (; memory_bank < end; memory_bank++) { | |
143 | if (cfi_flash_num_flash_banks >= | |
144 | CONFIG_SYS_MAX_FLASH_BANKS_DETECT) | |
145 | break; | |
146 | ||
147 | if (mem_is_flash(memory_bank)) { | |
148 | flash_banks_list[cfi_flash_num_flash_banks] = | |
149 | memory_bank; | |
150 | ||
151 | debug("flash bank found: base = 0x%lx, size = 0x%lx\n", | |
11d3ede4 MY |
152 | (unsigned long)memory_bank->base, |
153 | (unsigned long)memory_bank->size); | |
7a3620b2 | 154 | cfi_flash_num_flash_banks++; |
5894ca00 | 155 | } |
5894ca00 MY |
156 | } |
157 | ||
7a3620b2 MY |
158 | debug("number of flash banks: %d\n", cfi_flash_num_flash_banks); |
159 | } | |
e856bdcf | 160 | #else /* CONFIG_MTD_NOR_FLASH */ |
ef07a99b | 161 | static void detect_num_flash_banks(void) |
7a3620b2 MY |
162 | { |
163 | }; | |
e856bdcf | 164 | #endif /* CONFIG_MTD_NOR_FLASH */ |
7a3620b2 MY |
165 | |
166 | void support_card_late_init(void) | |
167 | { | |
168 | detect_num_flash_banks(); | |
5894ca00 | 169 | } |
8469700b MY |
170 | |
171 | static const u8 ledval_num[] = { | |
172 | 0x7e, /* 0 */ | |
173 | 0x0c, /* 1 */ | |
174 | 0xb6, /* 2 */ | |
175 | 0x9e, /* 3 */ | |
176 | 0xcc, /* 4 */ | |
177 | 0xda, /* 5 */ | |
178 | 0xfa, /* 6 */ | |
179 | 0x4e, /* 7 */ | |
180 | 0xfe, /* 8 */ | |
181 | 0xde, /* 9 */ | |
182 | }; | |
183 | ||
184 | static const u8 ledval_alpha[] = { | |
185 | 0xee, /* A */ | |
186 | 0xf8, /* B */ | |
187 | 0x72, /* C */ | |
188 | 0xbc, /* D */ | |
189 | 0xf2, /* E */ | |
190 | 0xe2, /* F */ | |
191 | 0x7a, /* G */ | |
192 | 0xe8, /* H */ | |
193 | 0x08, /* I */ | |
194 | 0x3c, /* J */ | |
195 | 0xea, /* K */ | |
196 | 0x70, /* L */ | |
197 | 0x6e, /* M */ | |
198 | 0xa8, /* N */ | |
199 | 0xb8, /* O */ | |
200 | 0xe6, /* P */ | |
201 | 0xce, /* Q */ | |
202 | 0xa0, /* R */ | |
203 | 0xc8, /* S */ | |
204 | 0x8c, /* T */ | |
205 | 0x7c, /* U */ | |
206 | 0x54, /* V */ | |
207 | 0xfc, /* W */ | |
208 | 0xec, /* X */ | |
209 | 0xdc, /* Y */ | |
210 | 0xa4, /* Z */ | |
211 | }; | |
212 | ||
213 | static u8 char2ledval(char c) | |
214 | { | |
215 | if (isdigit(c)) | |
216 | return ledval_num[c - '0']; | |
217 | else if (isalpha(c)) | |
218 | return ledval_alpha[toupper(c) - 'A']; | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | void led_puts(const char *s) | |
224 | { | |
225 | int i; | |
226 | u32 val = 0; | |
227 | ||
228 | if (!s) | |
229 | return; | |
230 | ||
231 | for (i = 0; i < 4; i++) { | |
232 | val <<= 8; | |
233 | val |= char2ledval(*s); | |
234 | if (*s != '\0') | |
235 | s++; | |
236 | } | |
237 | ||
d7728aa4 | 238 | writel(~val, LED_BASE); |
8469700b | 239 | } |