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Masahiro Yamada5894ca02014-10-03 19:21:06 +09001/*
Masahiro Yamadaf6e7f072015-05-29 17:30:00 +09002 * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamada5894ca02014-10-03 19:21:06 +09003 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7#include <common.h>
Masahiro Yamada84697002015-09-22 00:27:31 +09008#include <linux/ctype.h>
Masahiro Yamadaf6e7f072015-05-29 17:30:00 +09009#include <linux/io.h>
Masahiro Yamada107b3fb2016-01-09 01:51:13 +090010
11#include "micro-support-card.h"
Masahiro Yamada5894ca02014-10-03 19:21:06 +090012
Masahiro Yamadad7728aa2015-09-22 00:27:32 +090013#define MICRO_SUPPORT_CARD_BASE 0x43f00000
14#define SMC911X_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x00000)
15#define LED_BASE ((MICRO_SUPPORT_CARD_BASE) + 0x90000)
16#define NS16550A_BASE ((MICRO_SUPPORT_CARD_BASE) + 0xb0000)
17#define MICRO_SUPPORT_CARD_RESET ((MICRO_SUPPORT_CARD_BASE) + 0xd0034)
18#define MICRO_SUPPORT_CARD_REVISION ((MICRO_SUPPORT_CARD_BASE) + 0xd00E0)
19
Masahiro Yamada5894ca02014-10-03 19:21:06 +090020/*
21 * 0: reset deassert, 1: reset
22 *
23 * bit[0]: LAN, I2C, LED
24 * bit[1]: UART
25 */
26void support_card_reset_deassert(void)
27{
Masahiro Yamada36223f52016-03-18 16:41:46 +090028 writel(0x00010000, MICRO_SUPPORT_CARD_RESET);
Masahiro Yamada5894ca02014-10-03 19:21:06 +090029}
30
31void support_card_reset(void)
32{
Masahiro Yamada36223f52016-03-18 16:41:46 +090033 writel(0x00020003, MICRO_SUPPORT_CARD_RESET);
Masahiro Yamada5894ca02014-10-03 19:21:06 +090034}
35
36static int support_card_show_revision(void)
37{
38 u32 revision;
39
Masahiro Yamada98798422015-09-11 20:17:45 +090040 revision = readl(MICRO_SUPPORT_CARD_REVISION);
41 printf("(CPLD version %d.%d)\n", revision >> 4, revision & 0xf);
Masahiro Yamada5894ca02014-10-03 19:21:06 +090042 return 0;
43}
Masahiro Yamada5894ca02014-10-03 19:21:06 +090044
Masahiro Yamada7a3620b2014-12-06 00:03:26 +090045int check_support_card(void)
46{
47 printf("SC: Micro Support Card ");
48 return support_card_show_revision();
49}
50
Masahiro Yamada5894ca02014-10-03 19:21:06 +090051void support_card_init(void)
52{
53 /*
54 * After power on, we need to keep the LAN controller in reset state
55 * for a while. (200 usec)
Masahiro Yamada4d13b1b2015-03-23 00:07:30 +090056 * Fortunately, enough wait time is already inserted in pll_init()
Masahiro Yamada5894ca02014-10-03 19:21:06 +090057 * function. So we do not have to wait here.
58 */
59 support_card_reset_deassert();
60}
61
Masahiro Yamada5894ca02014-10-03 19:21:06 +090062#if defined(CONFIG_SMC911X)
63#include <netdev.h>
64
65int board_eth_init(bd_t *bis)
66{
Masahiro Yamadad7728aa2015-09-22 00:27:32 +090067 return smc911x_initialize(0, SMC911X_BASE);
Masahiro Yamada5894ca02014-10-03 19:21:06 +090068}
69#endif
70
71#if !defined(CONFIG_SYS_NO_FLASH)
72
73#include <mtd/cfi_flash.h>
74
Masahiro Yamada7a3620b2014-12-06 00:03:26 +090075struct memory_bank {
76 phys_addr_t base;
77 unsigned long size;
78};
Masahiro Yamada5894ca02014-10-03 19:21:06 +090079
Masahiro Yamada7a3620b2014-12-06 00:03:26 +090080static int mem_is_flash(const struct memory_bank *mem)
Masahiro Yamada5894ca02014-10-03 19:21:06 +090081{
82 const int loop = 128;
83 u32 *scratch_addr;
84 u32 saved_value;
85 int ret = 1;
86 int i;
87
Masahiro Yamada7a3620b2014-12-06 00:03:26 +090088 /* just in case, use the tail of the memory bank */
89 scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop,
90 sizeof(u32) * loop, MAP_NOCACHE);
Masahiro Yamada5894ca02014-10-03 19:21:06 +090091
92 for (i = 0; i < loop; i++, scratch_addr++) {
93 saved_value = readl(scratch_addr);
94 writel(~saved_value, scratch_addr);
95 if (readl(scratch_addr) != saved_value) {
96 /* We assume no memory or SRAM here. */
97 writel(saved_value, scratch_addr);
98 ret = 0;
99 break;
100 }
101 }
102
103 unmap_physmem(scratch_addr, MAP_NOCACHE);
104
105 return ret;
106}
107
Masahiro Yamada98798422015-09-11 20:17:45 +0900108/* {address, size} */
109static const struct memory_bank memory_banks[] = {
Masahiro Yamadad5ed8c52015-09-11 20:17:47 +0900110 {0x42000000, 0x01f00000},
Masahiro Yamada7a3620b2014-12-06 00:03:26 +0900111};
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900112
Masahiro Yamada7a3620b2014-12-06 00:03:26 +0900113static const struct memory_bank
114*flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT];
115
116phys_addr_t cfi_flash_bank_addr(int i)
117{
118 return flash_banks_list[i]->base;
119}
120
121unsigned long cfi_flash_bank_size(int i)
122{
123 return flash_banks_list[i]->size;
124}
125
126static void detect_num_flash_banks(void)
127{
128 const struct memory_bank *memory_bank, *end;
129
130 cfi_flash_num_flash_banks = 0;
131
Masahiro Yamada98798422015-09-11 20:17:45 +0900132 memory_bank = memory_banks;
133 end = memory_bank + ARRAY_SIZE(memory_banks);
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900134
Masahiro Yamada7a3620b2014-12-06 00:03:26 +0900135 for (; memory_bank < end; memory_bank++) {
136 if (cfi_flash_num_flash_banks >=
137 CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
138 break;
139
140 if (mem_is_flash(memory_bank)) {
141 flash_banks_list[cfi_flash_num_flash_banks] =
142 memory_bank;
143
144 debug("flash bank found: base = 0x%lx, size = 0x%lx\n",
Masahiro Yamada11d3ede2016-02-26 18:59:45 +0900145 (unsigned long)memory_bank->base,
146 (unsigned long)memory_bank->size);
Masahiro Yamada7a3620b2014-12-06 00:03:26 +0900147 cfi_flash_num_flash_banks++;
148 }
149 }
150
151 debug("number of flash banks: %d\n", cfi_flash_num_flash_banks);
Masahiro Yamada5894ca02014-10-03 19:21:06 +0900152}
Masahiro Yamada4d13b1b2015-03-23 00:07:30 +0900153#else /* CONFIG_SYS_NO_FLASH */
Masahiro Yamada7a3620b2014-12-06 00:03:26 +0900154void detect_num_flash_banks(void)
155{
156};
Masahiro Yamada4d13b1b2015-03-23 00:07:30 +0900157#endif /* CONFIG_SYS_NO_FLASH */
Masahiro Yamada7a3620b2014-12-06 00:03:26 +0900158
159void support_card_late_init(void)
160{
161 detect_num_flash_banks();
162}
Masahiro Yamada84697002015-09-22 00:27:31 +0900163
164static const u8 ledval_num[] = {
165 0x7e, /* 0 */
166 0x0c, /* 1 */
167 0xb6, /* 2 */
168 0x9e, /* 3 */
169 0xcc, /* 4 */
170 0xda, /* 5 */
171 0xfa, /* 6 */
172 0x4e, /* 7 */
173 0xfe, /* 8 */
174 0xde, /* 9 */
175};
176
177static const u8 ledval_alpha[] = {
178 0xee, /* A */
179 0xf8, /* B */
180 0x72, /* C */
181 0xbc, /* D */
182 0xf2, /* E */
183 0xe2, /* F */
184 0x7a, /* G */
185 0xe8, /* H */
186 0x08, /* I */
187 0x3c, /* J */
188 0xea, /* K */
189 0x70, /* L */
190 0x6e, /* M */
191 0xa8, /* N */
192 0xb8, /* O */
193 0xe6, /* P */
194 0xce, /* Q */
195 0xa0, /* R */
196 0xc8, /* S */
197 0x8c, /* T */
198 0x7c, /* U */
199 0x54, /* V */
200 0xfc, /* W */
201 0xec, /* X */
202 0xdc, /* Y */
203 0xa4, /* Z */
204};
205
206static u8 char2ledval(char c)
207{
208 if (isdigit(c))
209 return ledval_num[c - '0'];
210 else if (isalpha(c))
211 return ledval_alpha[toupper(c) - 'A'];
212
213 return 0;
214}
215
216void led_puts(const char *s)
217{
218 int i;
219 u32 val = 0;
220
221 if (!s)
222 return;
223
224 for (i = 0; i < 4; i++) {
225 val <<= 8;
226 val |= char2ledval(*s);
227 if (*s != '\0')
228 s++;
229 }
230
Masahiro Yamadad7728aa2015-09-22 00:27:32 +0900231 writel(~val, LED_BASE);
Masahiro Yamada84697002015-09-22 00:27:31 +0900232}