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Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +09001/*
Masahiro Yamadad0401702016-08-25 17:02:31 +09002 * Copyright (C) 2012-2015 Panasonic Corporation
3 * Copyright (C) 2015-2016 Socionext Inc.
4 * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +09005 *
6 * SPDX-License-Identifier: GPL-2.0+
7 */
8
9#include <common.h>
Masahiro Yamada4e5d28d2015-09-22 00:27:31 +090010#include <linux/ctype.h>
Masahiro Yamada663a23f2015-05-29 17:30:00 +090011#include <linux/io.h>
Masahiro Yamadaefdf3402016-01-09 01:51:13 +090012
13#include "micro-support-card.h"
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090014
Masahiro Yamada56a20712015-09-22 00:27:32 +090015#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
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090022/*
23 * 0: reset deassert, 1: reset
24 *
25 * bit[0]: LAN, I2C, LED
26 * bit[1]: UART
27 */
28void support_card_reset_deassert(void)
29{
Masahiro Yamada97edea52016-03-18 16:41:46 +090030 writel(0x00010000, MICRO_SUPPORT_CARD_RESET);
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090031}
32
33void support_card_reset(void)
34{
Masahiro Yamada97edea52016-03-18 16:41:46 +090035 writel(0x00020003, MICRO_SUPPORT_CARD_RESET);
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090036}
37
38static int support_card_show_revision(void)
39{
40 u32 revision;
41
Masahiro Yamada4903b6d2015-09-11 20:17:45 +090042 revision = readl(MICRO_SUPPORT_CARD_REVISION);
Masahiro Yamadad0401702016-08-25 17:02:31 +090043 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
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090049 return 0;
50}
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090051
Masahiro Yamada059c5432016-09-14 01:06:07 +090052int checkboard(void)
Masahiro Yamada88216812014-12-06 00:03:26 +090053{
54 printf("SC: Micro Support Card ");
55 return support_card_show_revision();
56}
57
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090058void support_card_init(void)
59{
60 /*
61 * After power on, we need to keep the LAN controller in reset state
62 * for a while. (200 usec)
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090063 */
Masahiro Yamadaa53f74f2016-10-08 13:25:29 +090064 udelay(200);
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090065 support_card_reset_deassert();
66}
67
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090068#if defined(CONFIG_SMC911X)
69#include <netdev.h>
70
71int board_eth_init(bd_t *bis)
72{
Masahiro Yamada56a20712015-09-22 00:27:32 +090073 return smc911x_initialize(0, SMC911X_BASE);
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090074}
75#endif
76
77#if !defined(CONFIG_SYS_NO_FLASH)
78
79#include <mtd/cfi_flash.h>
80
Masahiro Yamada88216812014-12-06 00:03:26 +090081struct memory_bank {
82 phys_addr_t base;
83 unsigned long size;
84};
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090085
Masahiro Yamada88216812014-12-06 00:03:26 +090086static int mem_is_flash(const struct memory_bank *mem)
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090087{
88 const int loop = 128;
89 u32 *scratch_addr;
90 u32 saved_value;
91 int ret = 1;
92 int i;
93
Masahiro Yamada88216812014-12-06 00:03:26 +090094 /* just in case, use the tail of the memory bank */
95 scratch_addr = map_physmem(mem->base + mem->size - sizeof(u32) * loop,
96 sizeof(u32) * loop, MAP_NOCACHE);
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +090097
98 for (i = 0; i < loop; i++, scratch_addr++) {
99 saved_value = readl(scratch_addr);
100 writel(~saved_value, scratch_addr);
101 if (readl(scratch_addr) != saved_value) {
102 /* We assume no memory or SRAM here. */
103 writel(saved_value, scratch_addr);
104 ret = 0;
105 break;
106 }
107 }
108
109 unmap_physmem(scratch_addr, MAP_NOCACHE);
110
111 return ret;
112}
113
Masahiro Yamada4903b6d2015-09-11 20:17:45 +0900114/* {address, size} */
115static const struct memory_bank memory_banks[] = {
Masahiro Yamada4b275ea2015-09-11 20:17:47 +0900116 {0x42000000, 0x01f00000},
Masahiro Yamada88216812014-12-06 00:03:26 +0900117};
118
Masahiro Yamada88216812014-12-06 00:03:26 +0900119static const struct memory_bank
120*flash_banks_list[CONFIG_SYS_MAX_FLASH_BANKS_DETECT];
121
122phys_addr_t cfi_flash_bank_addr(int i)
123{
124 return flash_banks_list[i]->base;
125}
126
127unsigned long cfi_flash_bank_size(int i)
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +0900128{
Masahiro Yamada88216812014-12-06 00:03:26 +0900129 return flash_banks_list[i]->size;
130}
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +0900131
Masahiro Yamada88216812014-12-06 00:03:26 +0900132static void detect_num_flash_banks(void)
133{
134 const struct memory_bank *memory_bank, *end;
135
136 cfi_flash_num_flash_banks = 0;
137
Masahiro Yamada4903b6d2015-09-11 20:17:45 +0900138 memory_bank = memory_banks;
139 end = memory_bank + ARRAY_SIZE(memory_banks);
Masahiro Yamada88216812014-12-06 00:03:26 +0900140
141 for (; memory_bank < end; memory_bank++) {
142 if (cfi_flash_num_flash_banks >=
143 CONFIG_SYS_MAX_FLASH_BANKS_DETECT)
144 break;
145
146 if (mem_is_flash(memory_bank)) {
147 flash_banks_list[cfi_flash_num_flash_banks] =
148 memory_bank;
149
150 debug("flash bank found: base = 0x%lx, size = 0x%lx\n",
Masahiro Yamada09350102016-02-26 18:59:45 +0900151 (unsigned long)memory_bank->base,
152 (unsigned long)memory_bank->size);
Masahiro Yamada88216812014-12-06 00:03:26 +0900153 cfi_flash_num_flash_banks++;
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +0900154 }
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +0900155 }
156
Masahiro Yamada88216812014-12-06 00:03:26 +0900157 debug("number of flash banks: %d\n", cfi_flash_num_flash_banks);
Masahiro Yamadabb2ff9d2014-10-03 19:21:06 +0900158}
Masahiro Yamada5d3d9962015-03-23 00:07:30 +0900159#else /* CONFIG_SYS_NO_FLASH */
Masahiro Yamada88216812014-12-06 00:03:26 +0900160void detect_num_flash_banks(void)
161{
162};
Masahiro Yamada5d3d9962015-03-23 00:07:30 +0900163#endif /* CONFIG_SYS_NO_FLASH */
Masahiro Yamada88216812014-12-06 00:03:26 +0900164
165void support_card_late_init(void)
166{
167 detect_num_flash_banks();
168}
Masahiro Yamada4e5d28d2015-09-22 00:27:31 +0900169
170static const u8 ledval_num[] = {
171 0x7e, /* 0 */
172 0x0c, /* 1 */
173 0xb6, /* 2 */
174 0x9e, /* 3 */
175 0xcc, /* 4 */
176 0xda, /* 5 */
177 0xfa, /* 6 */
178 0x4e, /* 7 */
179 0xfe, /* 8 */
180 0xde, /* 9 */
181};
182
183static const u8 ledval_alpha[] = {
184 0xee, /* A */
185 0xf8, /* B */
186 0x72, /* C */
187 0xbc, /* D */
188 0xf2, /* E */
189 0xe2, /* F */
190 0x7a, /* G */
191 0xe8, /* H */
192 0x08, /* I */
193 0x3c, /* J */
194 0xea, /* K */
195 0x70, /* L */
196 0x6e, /* M */
197 0xa8, /* N */
198 0xb8, /* O */
199 0xe6, /* P */
200 0xce, /* Q */
201 0xa0, /* R */
202 0xc8, /* S */
203 0x8c, /* T */
204 0x7c, /* U */
205 0x54, /* V */
206 0xfc, /* W */
207 0xec, /* X */
208 0xdc, /* Y */
209 0xa4, /* Z */
210};
211
212static u8 char2ledval(char c)
213{
214 if (isdigit(c))
215 return ledval_num[c - '0'];
216 else if (isalpha(c))
217 return ledval_alpha[toupper(c) - 'A'];
218
219 return 0;
220}
221
222void led_puts(const char *s)
223{
224 int i;
225 u32 val = 0;
226
227 if (!s)
228 return;
229
230 for (i = 0; i < 4; i++) {
231 val <<= 8;
232 val |= char2ledval(*s);
233 if (*s != '\0')
234 s++;
235 }
236
Masahiro Yamada56a20712015-09-22 00:27:32 +0900237 writel(~val, LED_BASE);
Masahiro Yamada4e5d28d2015-09-22 00:27:31 +0900238}