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[karo-tx-uboot.git] / board / isee / igep0033 / board.c
1 /*
2  * Board functions for IGEP COM AQUILA/CYGNUS based boards
3  *
4  * Copyright (C) 2013, ISEE 2007 SL - http://www.isee.biz/
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 of
9  * the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE.  See the
14  * GNU General Public License for more details.
15  */
16
17 #include <common.h>
18 #include <errno.h>
19 #include <spl.h>
20 #include <asm/arch/cpu.h>
21 #include <asm/arch/hardware.h>
22 #include <asm/arch/omap.h>
23 #include <asm/arch/ddr_defs.h>
24 #include <asm/arch/clock.h>
25 #include <asm/arch/gpio.h>
26 #include <asm/arch/mmc_host_def.h>
27 #include <asm/arch/sys_proto.h>
28 #include <asm/io.h>
29 #include <asm/emif.h>
30 #include <asm/gpio.h>
31 #include <i2c.h>
32 #include <miiphy.h>
33 #include <cpsw.h>
34 #include "board.h"
35
36 DECLARE_GLOBAL_DATA_PTR;
37
38 static struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
39 #ifdef CONFIG_SPL_BUILD
40 static struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;
41 #endif
42
43 /* MII mode defines */
44 #define RMII_MODE_ENABLE        0x4D
45
46 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
47
48 /* UART Defines */
49 #ifdef CONFIG_SPL_BUILD
50 #define UART_RESET              (0x1 << 1)
51 #define UART_CLK_RUNNING_MASK   0x1
52 #define UART_SMART_IDLE_EN      (0x1 << 0x3)
53
54 static void rtc32k_enable(void)
55 {
56         struct rtc_regs *rtc = (struct rtc_regs *)RTC_BASE;
57
58         /*
59          * Unlock the RTC's registers.  For more details please see the
60          * RTC_SS section of the TRM.  In order to unlock we need to
61          * write these specific values (keys) in this order.
62          */
63         writel(0x83e70b13, &rtc->kick0r);
64         writel(0x95a4f1e0, &rtc->kick1r);
65
66         /* Enable the RTC 32K OSC by setting bits 3 and 6. */
67         writel((1 << 3) | (1 << 6), &rtc->osc);
68 }
69
70 static const struct ddr_data ddr3_data = {
71         .datardsratio0 = K4B2G1646EBIH9_RD_DQS,
72         .datawdsratio0 = K4B2G1646EBIH9_WR_DQS,
73         .datafwsratio0 = K4B2G1646EBIH9_PHY_FIFO_WE,
74         .datawrsratio0 = K4B2G1646EBIH9_PHY_WR_DATA,
75         .datadldiff0 = PHY_DLL_LOCK_DIFF,
76 };
77
78 static const struct cmd_control ddr3_cmd_ctrl_data = {
79         .cmd0csratio = K4B2G1646EBIH9_RATIO,
80         .cmd0dldiff = K4B2G1646EBIH9_DLL_LOCK_DIFF,
81         .cmd0iclkout = K4B2G1646EBIH9_INVERT_CLKOUT,
82
83         .cmd1csratio = K4B2G1646EBIH9_RATIO,
84         .cmd1dldiff = K4B2G1646EBIH9_DLL_LOCK_DIFF,
85         .cmd1iclkout = K4B2G1646EBIH9_INVERT_CLKOUT,
86
87         .cmd2csratio = K4B2G1646EBIH9_RATIO,
88         .cmd2dldiff = K4B2G1646EBIH9_DLL_LOCK_DIFF,
89         .cmd2iclkout = K4B2G1646EBIH9_INVERT_CLKOUT,
90 };
91
92 static struct emif_regs ddr3_emif_reg_data = {
93         .sdram_config = K4B2G1646EBIH9_EMIF_SDCFG,
94         .ref_ctrl = K4B2G1646EBIH9_EMIF_SDREF,
95         .sdram_tim1 = K4B2G1646EBIH9_EMIF_TIM1,
96         .sdram_tim2 = K4B2G1646EBIH9_EMIF_TIM2,
97         .sdram_tim3 = K4B2G1646EBIH9_EMIF_TIM3,
98         .zq_config = K4B2G1646EBIH9_ZQ_CFG,
99         .emif_ddr_phy_ctlr_1 = K4B2G1646EBIH9_EMIF_READ_LATENCY,
100 };
101 #endif
102
103 /*
104  * Early system init of muxing and clocks.
105  */
106 void s_init(void)
107 {
108         /*
109          * Save the boot parameters passed from romcode.
110          * We cannot delay the saving further than this,
111          * to prevent overwrites.
112          */
113 #ifdef CONFIG_SPL_BUILD
114         save_omap_boot_params();
115 #endif
116
117         /* WDT1 is already running when the bootloader gets control
118          * Disable it to avoid "random" resets
119          */
120         writel(0xAAAA, &wdtimer->wdtwspr);
121         while (readl(&wdtimer->wdtwwps) != 0x0)
122                 ;
123         writel(0x5555, &wdtimer->wdtwspr);
124         while (readl(&wdtimer->wdtwwps) != 0x0)
125                 ;
126
127 #ifdef CONFIG_SPL_BUILD
128         /* Setup the PLLs and the clocks for the peripherals */
129         pll_init();
130
131         /* Enable RTC32K clock */
132         rtc32k_enable();
133
134         /* UART softreset */
135         u32 regval;
136
137         enable_uart0_pin_mux();
138
139         regval = readl(&uart_base->uartsyscfg);
140         regval |= UART_RESET;
141         writel(regval, &uart_base->uartsyscfg);
142         while ((readl(&uart_base->uartsyssts) &
143                 UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK)
144                 ;
145
146         /* Disable smart idle */
147         regval = readl(&uart_base->uartsyscfg);
148         regval |= UART_SMART_IDLE_EN;
149         writel(regval, &uart_base->uartsyscfg);
150
151         gd = &gdata;
152
153         preloader_console_init();
154
155         /* Configure board pin mux */
156         enable_board_pin_mux();
157
158         config_ddr(303, K4B2G1646EBIH9_IOCTRL_VALUE, &ddr3_data,
159                    &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
160 #endif
161 }
162
163 /*
164  * Basic board specific setup.  Pinmux has been handled already.
165  */
166 int board_init(void)
167 {
168         gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;
169
170         gpmc_init();
171
172         return 0;
173 }
174
175 #if defined(CONFIG_DRIVER_TI_CPSW)
176 static void cpsw_control(int enabled)
177 {
178         /* VTP can be added here */
179
180         return;
181 }
182
183 static struct cpsw_slave_data cpsw_slaves[] = {
184         {
185                 .slave_reg_ofs  = 0x208,
186                 .sliver_reg_ofs = 0xd80,
187                 .phy_id         = 0,
188                 .phy_if         = PHY_INTERFACE_MODE_RMII,
189         },
190 };
191
192 static struct cpsw_platform_data cpsw_data = {
193         .mdio_base              = CPSW_MDIO_BASE,
194         .cpsw_base              = CPSW_BASE,
195         .mdio_div               = 0xff,
196         .channels               = 8,
197         .cpdma_reg_ofs          = 0x800,
198         .slaves                 = 1,
199         .slave_data             = cpsw_slaves,
200         .ale_reg_ofs            = 0xd00,
201         .ale_entries            = 1024,
202         .host_port_reg_ofs      = 0x108,
203         .hw_stats_reg_ofs       = 0x900,
204         .mac_control            = (1 << 5),
205         .control                = cpsw_control,
206         .host_port_num          = 0,
207         .version                = CPSW_CTRL_VERSION_2,
208 };
209
210 int board_eth_init(bd_t *bis)
211 {
212         int rv, ret = 0;
213         uint8_t mac_addr[6];
214         uint32_t mac_hi, mac_lo;
215
216         if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
217                 /* try reading mac address from efuse */
218                 mac_lo = readl(&cdev->macid0l);
219                 mac_hi = readl(&cdev->macid0h);
220                 mac_addr[0] = mac_hi & 0xFF;
221                 mac_addr[1] = (mac_hi & 0xFF00) >> 8;
222                 mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
223                 mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
224                 mac_addr[4] = mac_lo & 0xFF;
225                 mac_addr[5] = (mac_lo & 0xFF00) >> 8;
226                 if (is_valid_ether_addr(mac_addr))
227                         eth_setenv_enetaddr("ethaddr", mac_addr);
228         }
229
230         writel(RMII_MODE_ENABLE, &cdev->miisel);
231
232         rv = cpsw_register(&cpsw_data);
233         if (rv < 0)
234                 printf("Error %d registering CPSW switch\n", rv);
235         else
236                 ret += rv;
237
238         return ret;
239 }
240 #endif
241