1 /*
2  * Copyright (C) 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
3  * Copyright (C) 2012 Renesas Solutions Corp.
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  */
19 
20 #include <common.h>
21 #include <asm/io.h>
22 #include <asm/processor.h>
23 #include <netdev.h>
24 #include <i2c.h>
25 
26 DECLARE_GLOBAL_DATA_PTR;
27 
28 #define MODEMR			(0xFFCC0020)
29 #define MODEMR_MASK		(0x6)
30 #define MODEMR_533MHZ	(0x2)
31 
32 int checkboard(void)
33 {
34 	u32 r = readl(MODEMR);
35 	if ((r & MODEMR_MASK) & MODEMR_533MHZ)
36 		puts("CPU Clock: 533MHz\n");
37 	else
38 		puts("CPU Clock: 400MHz\n");
39 
40 	puts("BOARD: Alpha Project. AP-SH4A-4A\n");
41 	return 0;
42 }
43 
44 #define MSTPSR1			(0xFFC80044)
45 #define MSTPCR1			(0xFFC80034)
46 #define MSTPSR1_GETHER	(1 << 14)
47 
48 /* IPSR3 */
49 #define ET0_ETXD0 (0x4 << 3)
50 #define ET0_GTX_CLK_A (0x4 << 6)
51 #define ET0_ETXD1_A (0x4 << 9)
52 #define ET0_ETXD2_A (0x4 << 12)
53 #define ET0_ETXD3_A (0x4 << 15)
54 #define ET0_ETXD4 (0x3 << 18)
55 #define ET0_ETXD5_A (0x5 << 21)
56 #define ET0_ETXD6_A (0x5 << 24)
57 #define ET0_ETXD7 (0x4 << 27)
58 #define IPSR3_ETH_ENABLE \
59 	(ET0_ETXD0 | ET0_GTX_CLK_A | ET0_ETXD1_A | ET0_ETXD2_A | \
60 	ET0_ETXD3_A | ET0_ETXD4 | ET0_ETXD5_A | ET0_ETXD6_A | ET0_ETXD7)
61 
62 /* IPSR4 */
63 #define ET0_ERXD7	(0x4)
64 #define ET0_RX_DV	(0x4 << 3)
65 #define ET0_RX_ER	(0x4 << 6)
66 #define ET0_CRS		(0x4 << 9)
67 #define ET0_COL		(0x4 << 12)
68 #define ET0_MDC		(0x4 << 15)
69 #define ET0_MDIO_A	(0x3 << 18)
70 #define ET0_LINK_A	(0x3 << 20)
71 #define ET0_PHY_INT_A (0x3 << 24)
72 
73 #define IPSR4_ETH_ENABLE \
74 	(ET0_ERXD7 | ET0_RX_DV | ET0_RX_ER | ET0_CRS | ET0_COL | \
75 	ET0_MDC | ET0_MDIO_A | ET0_LINK_A | ET0_PHY_INT_A)
76 
77 /* IPSR8 */
78 #define ET0_ERXD0	(0x4 << 20)
79 #define ET0_ERXD1	(0x4 << 23)
80 #define ET0_ERXD2_A (0x3 << 26)
81 #define ET0_ERXD3_A (0x3 << 28)
82 #define IPSR8_ETH_ENABLE \
83 	(ET0_ERXD0 | ET0_ERXD1 | ET0_ERXD2_A | ET0_ERXD3_A)
84 
85 /* IPSR10 */
86 #define RX4_D	(0x1 << 22)
87 #define TX4_D	(0x1 << 23)
88 #define IPSR10_SCIF_ENABLE (RX4_D | TX4_D)
89 
90 /* IPSR11 */
91 #define ET0_ERXD4	(0x4 <<  4)
92 #define ET0_ERXD5	(0x4 <<  7)
93 #define ET0_ERXD6	(0x4 <<  4)
94 #define ET0_TX_EN	(0x2 << 19)
95 #define ET0_TX_ER	(0x2 << 21)
96 #define ET0_TX_CLK_A (0x4 << 23)
97 #define ET0_RX_CLK_A (0x3 << 26)
98 #define IPSR11_ETH_ENABLE \
99 	(ET0_ERXD4 | ET0_ERXD5 | ET0_ERXD6 | ET0_TX_EN | ET0_TX_ER | \
100 	ET0_TX_CLK_A | ET0_RX_CLK_A)
101 
102 #define GPSR1_INIT (0xFFBF7FFF)
103 #define GPSR2_INIT (0x4005FEFF)
104 #define GPSR3_INIT (0x2EFFFFFF)
105 #define GPSR4_INIT (0xC7000000)
106 
107 int board_init(void)
108 {
109 	u32 data;
110 
111 	/* Set IPSR register */
112 	data = readl(IPSR3);
113 	data |= IPSR3_ETH_ENABLE;
114 	writel(~data, PMMR);
115 	writel(data, IPSR3);
116 
117 	data = readl(IPSR4);
118 	data |= IPSR4_ETH_ENABLE;
119 	writel(~data, PMMR);
120 	writel(data, IPSR4);
121 
122 	data = readl(IPSR8);
123 	data |= IPSR8_ETH_ENABLE;
124 	writel(~data, PMMR);
125 	writel(data, IPSR8);
126 
127 	data = readl(IPSR10);
128 	data |= IPSR10_SCIF_ENABLE;
129 	writel(~data, PMMR);
130 	writel(data, IPSR10);
131 
132 	data = readl(IPSR11);
133 	data |= IPSR11_ETH_ENABLE;
134 	writel(~data, PMMR);
135 	writel(data, IPSR11);
136 
137 	/* GPIO select */
138 	data = GPSR1_INIT;
139 	writel(~data, PMMR);
140 	writel(data, GPSR1);
141 
142 	data = GPSR2_INIT;
143 	writel(~data, PMMR);
144 	writel(data, GPSR2);
145 
146 	data = GPSR3_INIT;
147 	writel(~data, PMMR);
148 	writel(data, GPSR3);
149 
150 	data = GPSR4_INIT;
151 	writel(~data, PMMR);
152 	writel(data, GPSR4);
153 
154 	data = 0x0;
155 	writel(~data, PMMR);
156 	writel(data, GPSR5);
157 
158 	/* mode select */
159 	data = MODESEL2_INIT;
160 	writel(~data, PMMR);
161 	writel(data, MODESEL2);
162 
163 #if defined(CONFIG_SH_ETHER)
164 	u32 r = readl(MSTPSR1);
165 	if (r & MSTPSR1_GETHER)
166 		writel((r & ~MSTPSR1_GETHER), MSTPCR1);
167 #endif
168 	return 0;
169 }
170 
171 int board_late_init(void)
172 {
173 	u8 mac[6];
174 
175 	/* Read Mac Address and set*/
176 	i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
177 	i2c_set_bus_num(CONFIG_SYS_I2C_MODULE);
178 
179 	/* Read MAC address */
180 	i2c_read(0x50, 0x0, 0, mac, 6);
181 
182 	if (is_valid_ether_addr(mac))
183 		eth_setenv_enetaddr("ethaddr", mac);
184 
185 	return 0;
186 }
187 
188 int dram_init(void)
189 {
190 	gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
191 	gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
192 	printf("DRAM:  %dMB\n", CONFIG_SYS_SDRAM_SIZE / (1024 * 1024));
193 
194 	return 0;
195 }
196