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5894ca00 | 1 | /* |
f6e7f07c | 2 | * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com> |
5894ca00 MY |
3 | * |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | #include <common.h> | |
8469700b | 8 | #include <linux/ctype.h> |
f6e7f07c | 9 | #include <linux/io.h> |
8469700b | 10 | #include <mach/micro-support-card.h> |
5894ca00 | 11 | |
d7728aa4 MY |
12 | #define MICRO_SUPPORT_CARD_BASE 0x43f00000 |
13 | #define SMC911X_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x00000) | |
14 | #define LED_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x90000) | |
15 | #define NS16550A_BASE ((MICRO_SUPPORT_CARD_BASE) + 0xb0000) | |
16 | #define MICRO_SUPPORT_CARD_RESET ((MICRO_SUPPORT_CARD_BASE) + 0xd0034) | |
17 | #define MICRO_SUPPORT_CARD_REVISION ((MICRO_SUPPORT_CARD_BASE) + 0xd00E0) | |
18 | ||
5894ca00 MY |
19 | /* |
20 | * 0: reset deassert, 1: reset | |
21 | * | |
22 | * bit[0]: LAN, I2C, LED | |
23 | * bit[1]: UART | |
24 | */ | |
25 | void support_card_reset_deassert(void) | |
26 | { | |
9879842c | 27 | writel(0, MICRO_SUPPORT_CARD_RESET); |
5894ca00 MY |
28 | } |
29 | ||
30 | void support_card_reset(void) | |
31 | { | |
9879842c | 32 | writel(3, MICRO_SUPPORT_CARD_RESET); |
5894ca00 MY |
33 | } |
34 | ||
35 | static int support_card_show_revision(void) | |
36 | { | |
37 | u32 revision; | |
38 | ||
9879842c MY |
39 | revision = readl(MICRO_SUPPORT_CARD_REVISION); |
40 | printf("(CPLD version %d.%d)\n", revision >> 4, revision & 0xf); | |
5894ca00 MY |
41 | return 0; |
42 | } | |
5894ca00 | 43 | |
7a3620b2 MY |
44 | int check_support_card(void) |
45 | { | |
46 | printf("SC: Micro Support Card "); | |
47 | return support_card_show_revision(); | |
48 | } | |
49 | ||
5894ca00 MY |
50 | void support_card_init(void) |
51 | { | |
52 | /* | |
53 | * After power on, we need to keep the LAN controller in reset state | |
54 | * for a while. (200 usec) | |
4d13b1b7 | 55 | * Fortunately, enough wait time is already inserted in pll_init() |
5894ca00 MY |
56 | * function. So we do not have to wait here. |
57 | */ | |
58 | support_card_reset_deassert(); | |
59 | } | |
60 | ||
5894ca00 MY |
61 | #if defined(CONFIG_SMC911X) |
62 | #include <netdev.h> | |
63 | ||
64 | int board_eth_init(bd_t *bis) | |
65 | { | |
d7728aa4 | 66 | return smc911x_initialize(0, SMC911X_BASE); |
5894ca00 MY |
67 | } |
68 | #endif | |
69 | ||
70 | #if !defined(CONFIG_SYS_NO_FLASH) | |
71 | ||
72 | #include <mtd/cfi_flash.h> | |
73 | ||
7a3620b2 MY |
74 | struct memory_bank { |
75 | phys_addr_t base; | |
76 | unsigned long size; | |
77 | }; | |
5894ca00 | 78 | |
7a3620b2 | 79 | static int mem_is_flash(const struct memory_bank *mem) |
5894ca00 MY |
80 | { |
81 | const int loop = 128; | |
82 | u32 *scratch_addr; | |
83 | u32 saved_value; | |
84 | int ret = 1; | |
85 | int i; | |
86 | ||
7a3620b2 MY |
87 | /* just in case, use the tail of the memory bank */ |
88 | scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop, | |
89 | sizeof(u32) * loop, MAP_NOCACHE); | |
5894ca00 MY |
90 | |
91 | for (i = 0; i < loop; i++, scratch_addr++) { | |
92 | saved_value = readl(scratch_addr); | |
93 | writel(~saved_value, scratch_addr); | |
94 | if (readl(scratch_addr) != saved_value) { | |
95 | /* We assume no memory or SRAM here. */ | |
96 | writel(saved_value, scratch_addr); | |
97 | ret = 0; | |
98 | break; | |
99 | } | |
100 | } | |
101 | ||
102 | unmap_physmem(scratch_addr, MAP_NOCACHE); | |
103 | ||
104 | return ret; | |
105 | } | |
106 | ||
9879842c MY |
107 | /* {address, size} */ |
108 | static const struct memory_bank memory_banks[] = { | |
d5ed8c57 | 109 | {0x42000000, 0x01f00000}, |
7a3620b2 MY |
110 | }; |
111 | ||
7a3620b2 MY |
112 | static const struct memory_bank |
113 | *flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT]; | |
114 | ||
115 | phys_addr_t cfi_flash_bank_addr(int i) | |
5894ca00 | 116 | { |
7a3620b2 MY |
117 | return flash_banks_list[i]->base; |
118 | } | |
5894ca00 | 119 | |
7a3620b2 MY |
120 | unsigned long cfi_flash_bank_size(int i) |
121 | { | |
122 | return flash_banks_list[i]->size; | |
123 | } | |
124 | ||
125 | static void detect_num_flash_banks(void) | |
126 | { | |
127 | const struct memory_bank *memory_bank, *end; | |
128 | ||
129 | cfi_flash_num_flash_banks = 0; | |
130 | ||
9879842c MY |
131 | memory_bank = memory_banks; |
132 | end = memory_bank + ARRAY_SIZE(memory_banks); | |
7a3620b2 MY |
133 | |
134 | for (; memory_bank < end; memory_bank++) { | |
135 | if (cfi_flash_num_flash_banks >= | |
136 | CONFIG_SYS_MAX_FLASH_BANKS_DETECT) | |
137 | break; | |
138 | ||
139 | if (mem_is_flash(memory_bank)) { | |
140 | flash_banks_list[cfi_flash_num_flash_banks] = | |
141 | memory_bank; | |
142 | ||
143 | debug("flash bank found: base = 0x%lx, size = 0x%lx\n", | |
144 | memory_bank->base, memory_bank->size); | |
145 | cfi_flash_num_flash_banks++; | |
5894ca00 | 146 | } |
5894ca00 MY |
147 | } |
148 | ||
7a3620b2 MY |
149 | debug("number of flash banks: %d\n", cfi_flash_num_flash_banks); |
150 | } | |
4d13b1b7 | 151 | #else /* CONFIG_SYS_NO_FLASH */ |
7a3620b2 MY |
152 | void detect_num_flash_banks(void) |
153 | { | |
154 | }; | |
4d13b1b7 | 155 | #endif /* CONFIG_SYS_NO_FLASH */ |
7a3620b2 MY |
156 | |
157 | void support_card_late_init(void) | |
158 | { | |
159 | detect_num_flash_banks(); | |
5894ca00 | 160 | } |
8469700b MY |
161 | |
162 | static const u8 ledval_num[] = { | |
163 | 0x7e, /* 0 */ | |
164 | 0x0c, /* 1 */ | |
165 | 0xb6, /* 2 */ | |
166 | 0x9e, /* 3 */ | |
167 | 0xcc, /* 4 */ | |
168 | 0xda, /* 5 */ | |
169 | 0xfa, /* 6 */ | |
170 | 0x4e, /* 7 */ | |
171 | 0xfe, /* 8 */ | |
172 | 0xde, /* 9 */ | |
173 | }; | |
174 | ||
175 | static const u8 ledval_alpha[] = { | |
176 | 0xee, /* A */ | |
177 | 0xf8, /* B */ | |
178 | 0x72, /* C */ | |
179 | 0xbc, /* D */ | |
180 | 0xf2, /* E */ | |
181 | 0xe2, /* F */ | |
182 | 0x7a, /* G */ | |
183 | 0xe8, /* H */ | |
184 | 0x08, /* I */ | |
185 | 0x3c, /* J */ | |
186 | 0xea, /* K */ | |
187 | 0x70, /* L */ | |
188 | 0x6e, /* M */ | |
189 | 0xa8, /* N */ | |
190 | 0xb8, /* O */ | |
191 | 0xe6, /* P */ | |
192 | 0xce, /* Q */ | |
193 | 0xa0, /* R */ | |
194 | 0xc8, /* S */ | |
195 | 0x8c, /* T */ | |
196 | 0x7c, /* U */ | |
197 | 0x54, /* V */ | |
198 | 0xfc, /* W */ | |
199 | 0xec, /* X */ | |
200 | 0xdc, /* Y */ | |
201 | 0xa4, /* Z */ | |
202 | }; | |
203 | ||
204 | static u8 char2ledval(char c) | |
205 | { | |
206 | if (isdigit(c)) | |
207 | return ledval_num[c - '0']; | |
208 | else if (isalpha(c)) | |
209 | return ledval_alpha[toupper(c) - 'A']; | |
210 | ||
211 | return 0; | |
212 | } | |
213 | ||
214 | void led_puts(const char *s) | |
215 | { | |
216 | int i; | |
217 | u32 val = 0; | |
218 | ||
219 | if (!s) | |
220 | return; | |
221 | ||
222 | for (i = 0; i < 4; i++) { | |
223 | val <<= 8; | |
224 | val |= char2ledval(*s); | |
225 | if (*s != '\0') | |
226 | s++; | |
227 | } | |
228 | ||
d7728aa4 | 229 | writel(~val, LED_BASE); |
8469700b | 230 | } |