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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
5894ca00 | 2 | /* |
499c8679 | 3 | * Copyright (C) 2012-2015 Panasonic Corporation |
2ba1d398 | 4 | * Copyright (C) 2015-2020 Socionext Inc. |
499c8679 | 5 | * Author: Masahiro Yamada <yamada.masahiro@socionext.com> |
5894ca00 MY |
6 | */ |
7 | ||
8 | #include <common.h> | |
2ba1d398 | 9 | #include <fdt_support.h> |
90526e9f SG |
10 | #include <net.h> |
11 | #include <dm/of.h> | |
8469700b | 12 | #include <linux/ctype.h> |
f6e7f07c | 13 | #include <linux/io.h> |
107b3fb4 MY |
14 | |
15 | #include "micro-support-card.h" | |
5894ca00 | 16 | |
2ba1d398 MY |
17 | #define SMC911X_OFFSET 0x00000 |
18 | #define LED_OFFSET 0x90000 | |
19 | #define NS16550A_OFFSET 0xb0000 | |
20 | #define MICRO_SUPPORT_CARD_RESET 0xd0034 | |
21 | #define MICRO_SUPPORT_CARD_REVISION 0xd00e0 | |
d7728aa4 | 22 | |
92d6524b | 23 | static bool support_card_found; |
2ba1d398 | 24 | static void __iomem *support_card_base; |
92d6524b MY |
25 | |
26 | static void support_card_detect(void) | |
27 | { | |
28 | DECLARE_GLOBAL_DATA_PTR; | |
29 | const void *fdt = gd->fdt_blob; | |
30 | int offset; | |
2ba1d398 | 31 | u64 addr, addr2; |
92d6524b MY |
32 | |
33 | offset = fdt_node_offset_by_compatible(fdt, 0, "smsc,lan9118"); | |
34 | if (offset < 0) | |
35 | return; | |
36 | ||
2ba1d398 MY |
37 | addr = fdt_get_base_address(fdt, offset); |
38 | if (addr == OF_BAD_ADDR) | |
39 | return; | |
40 | addr -= SMC911X_OFFSET; | |
41 | ||
92d6524b MY |
42 | offset = fdt_node_offset_by_compatible(fdt, 0, "ns16550a"); |
43 | if (offset < 0) | |
44 | return; | |
45 | ||
2ba1d398 MY |
46 | addr2 = fdt_get_base_address(fdt, offset); |
47 | if (addr2 == OF_BAD_ADDR) | |
48 | return; | |
49 | addr2 -= NS16550A_OFFSET; | |
50 | ||
51 | /* sanity check */ | |
52 | if (addr != addr2) | |
53 | return; | |
54 | ||
55 | support_card_base = ioremap(addr, 0x100000); | |
56 | ||
92d6524b MY |
57 | support_card_found = true; |
58 | } | |
59 | ||
5894ca00 MY |
60 | /* |
61 | * 0: reset deassert, 1: reset | |
62 | * | |
63 | * bit[0]: LAN, I2C, LED | |
64 | * bit[1]: UART | |
65 | */ | |
ef07a99b | 66 | static void support_card_reset_deassert(void) |
5894ca00 | 67 | { |
2ba1d398 | 68 | writel(0x00010000, support_card_base + MICRO_SUPPORT_CARD_RESET); |
5894ca00 MY |
69 | } |
70 | ||
ef07a99b | 71 | static void support_card_reset(void) |
5894ca00 | 72 | { |
2ba1d398 | 73 | writel(0x00020003, support_card_base + MICRO_SUPPORT_CARD_RESET); |
5894ca00 MY |
74 | } |
75 | ||
76 | static int support_card_show_revision(void) | |
77 | { | |
78 | u32 revision; | |
79 | ||
2ba1d398 | 80 | revision = readl(support_card_base + MICRO_SUPPORT_CARD_REVISION); |
499c8679 MY |
81 | revision &= 0xff; |
82 | ||
83 | /* revision 3.6.x card changed the revision format */ | |
6fc84914 MY |
84 | printf("SC: Micro Support Card (CPLD version %s%d.%d)\n", |
85 | revision >> 4 == 6 ? "3." : "", | |
499c8679 MY |
86 | revision >> 4, revision & 0xf); |
87 | ||
5894ca00 MY |
88 | return 0; |
89 | } | |
5894ca00 MY |
90 | |
91 | void support_card_init(void) | |
92 | { | |
92d6524b MY |
93 | support_card_detect(); |
94 | ||
95 | if (!support_card_found) | |
96 | return; | |
97 | ||
ef07a99b | 98 | support_card_reset(); |
5894ca00 MY |
99 | /* |
100 | * After power on, we need to keep the LAN controller in reset state | |
101 | * for a while. (200 usec) | |
5894ca00 | 102 | */ |
66e3efeb | 103 | udelay(200); |
5894ca00 | 104 | support_card_reset_deassert(); |
6fc84914 MY |
105 | |
106 | support_card_show_revision(); | |
5894ca00 MY |
107 | } |
108 | ||
5894ca00 MY |
109 | #if defined(CONFIG_SMC911X) |
110 | #include <netdev.h> | |
111 | ||
112 | int board_eth_init(bd_t *bis) | |
113 | { | |
92d6524b MY |
114 | if (!support_card_found) |
115 | return 0; | |
116 | ||
2ba1d398 | 117 | return smc911x_initialize(0, (unsigned long)support_card_base + SMC911X_OFFSET); |
5894ca00 MY |
118 | } |
119 | #endif | |
120 | ||
e856bdcf | 121 | #if defined(CONFIG_MTD_NOR_FLASH) |
5894ca00 MY |
122 | |
123 | #include <mtd/cfi_flash.h> | |
124 | ||
7a3620b2 MY |
125 | struct memory_bank { |
126 | phys_addr_t base; | |
127 | unsigned long size; | |
128 | }; | |
5894ca00 | 129 | |
7a3620b2 | 130 | static int mem_is_flash(const struct memory_bank *mem) |
5894ca00 MY |
131 | { |
132 | const int loop = 128; | |
133 | u32 *scratch_addr; | |
134 | u32 saved_value; | |
135 | int ret = 1; | |
136 | int i; | |
137 | ||
7a3620b2 MY |
138 | /* just in case, use the tail of the memory bank */ |
139 | scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop, | |
140 | sizeof(u32) * loop, MAP_NOCACHE); | |
5894ca00 MY |
141 | |
142 | for (i = 0; i < loop; i++, scratch_addr++) { | |
143 | saved_value = readl(scratch_addr); | |
144 | writel(~saved_value, scratch_addr); | |
145 | if (readl(scratch_addr) != saved_value) { | |
146 | /* We assume no memory or SRAM here. */ | |
147 | writel(saved_value, scratch_addr); | |
148 | ret = 0; | |
149 | break; | |
150 | } | |
151 | } | |
152 | ||
153 | unmap_physmem(scratch_addr, MAP_NOCACHE); | |
154 | ||
155 | return ret; | |
156 | } | |
157 | ||
9879842c MY |
158 | /* {address, size} */ |
159 | static const struct memory_bank memory_banks[] = { | |
d5ed8c57 | 160 | {0x42000000, 0x01f00000}, |
7a3620b2 MY |
161 | }; |
162 | ||
7a3620b2 MY |
163 | static const struct memory_bank |
164 | *flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT]; | |
165 | ||
166 | phys_addr_t cfi_flash_bank_addr(int i) | |
5894ca00 | 167 | { |
7a3620b2 MY |
168 | return flash_banks_list[i]->base; |
169 | } | |
5894ca00 | 170 | |
7a3620b2 MY |
171 | unsigned long cfi_flash_bank_size(int i) |
172 | { | |
173 | return flash_banks_list[i]->size; | |
174 | } | |
175 | ||
176 | static void detect_num_flash_banks(void) | |
177 | { | |
178 | const struct memory_bank *memory_bank, *end; | |
179 | ||
180 | cfi_flash_num_flash_banks = 0; | |
181 | ||
9879842c MY |
182 | memory_bank = memory_banks; |
183 | end = memory_bank + ARRAY_SIZE(memory_banks); | |
7a3620b2 MY |
184 | |
185 | for (; memory_bank < end; memory_bank++) { | |
186 | if (cfi_flash_num_flash_banks >= | |
187 | CONFIG_SYS_MAX_FLASH_BANKS_DETECT) | |
188 | break; | |
189 | ||
190 | if (mem_is_flash(memory_bank)) { | |
191 | flash_banks_list[cfi_flash_num_flash_banks] = | |
192 | memory_bank; | |
193 | ||
194 | debug("flash bank found: base = 0x%lx, size = 0x%lx\n", | |
11d3ede4 MY |
195 | (unsigned long)memory_bank->base, |
196 | (unsigned long)memory_bank->size); | |
7a3620b2 | 197 | cfi_flash_num_flash_banks++; |
5894ca00 | 198 | } |
5894ca00 MY |
199 | } |
200 | ||
7a3620b2 MY |
201 | debug("number of flash banks: %d\n", cfi_flash_num_flash_banks); |
202 | } | |
e856bdcf | 203 | #else /* CONFIG_MTD_NOR_FLASH */ |
ef07a99b | 204 | static void detect_num_flash_banks(void) |
7a3620b2 MY |
205 | { |
206 | }; | |
e856bdcf | 207 | #endif /* CONFIG_MTD_NOR_FLASH */ |
7a3620b2 MY |
208 | |
209 | void support_card_late_init(void) | |
210 | { | |
92d6524b MY |
211 | if (!support_card_found) |
212 | return; | |
213 | ||
7a3620b2 | 214 | detect_num_flash_banks(); |
5894ca00 | 215 | } |
8469700b MY |
216 | |
217 | static const u8 ledval_num[] = { | |
218 | 0x7e, /* 0 */ | |
219 | 0x0c, /* 1 */ | |
220 | 0xb6, /* 2 */ | |
221 | 0x9e, /* 3 */ | |
222 | 0xcc, /* 4 */ | |
223 | 0xda, /* 5 */ | |
224 | 0xfa, /* 6 */ | |
225 | 0x4e, /* 7 */ | |
226 | 0xfe, /* 8 */ | |
227 | 0xde, /* 9 */ | |
228 | }; | |
229 | ||
230 | static const u8 ledval_alpha[] = { | |
231 | 0xee, /* A */ | |
232 | 0xf8, /* B */ | |
233 | 0x72, /* C */ | |
234 | 0xbc, /* D */ | |
235 | 0xf2, /* E */ | |
236 | 0xe2, /* F */ | |
237 | 0x7a, /* G */ | |
238 | 0xe8, /* H */ | |
239 | 0x08, /* I */ | |
240 | 0x3c, /* J */ | |
241 | 0xea, /* K */ | |
242 | 0x70, /* L */ | |
243 | 0x6e, /* M */ | |
244 | 0xa8, /* N */ | |
245 | 0xb8, /* O */ | |
246 | 0xe6, /* P */ | |
247 | 0xce, /* Q */ | |
248 | 0xa0, /* R */ | |
249 | 0xc8, /* S */ | |
250 | 0x8c, /* T */ | |
251 | 0x7c, /* U */ | |
252 | 0x54, /* V */ | |
253 | 0xfc, /* W */ | |
254 | 0xec, /* X */ | |
255 | 0xdc, /* Y */ | |
256 | 0xa4, /* Z */ | |
257 | }; | |
258 | ||
259 | static u8 char2ledval(char c) | |
260 | { | |
261 | if (isdigit(c)) | |
262 | return ledval_num[c - '0']; | |
263 | else if (isalpha(c)) | |
264 | return ledval_alpha[toupper(c) - 'A']; | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
269 | void led_puts(const char *s) | |
270 | { | |
271 | int i; | |
272 | u32 val = 0; | |
273 | ||
92d6524b MY |
274 | if (!support_card_found) |
275 | return; | |
276 | ||
8469700b MY |
277 | if (!s) |
278 | return; | |
279 | ||
280 | for (i = 0; i < 4; i++) { | |
281 | val <<= 8; | |
282 | val |= char2ledval(*s); | |
283 | if (*s != '\0') | |
284 | s++; | |
285 | } | |
286 | ||
2ba1d398 | 287 | writel(~val, support_card_base + LED_OFFSET); |
8469700b | 288 | } |