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Ash Charles2d92ba82014-05-07 08:24:11 -07001/*
2 * Board functions for Gumstix Pepper and AM335x-based boards
3 *
4 * Copyright (C) 2014, Gumstix, Incorporated - http://www.gumstix.com/
5 * Based on board/ti/am335x/board.c from Texas Instruments, Inc.
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */
9
10#include <common.h>
11#include <errno.h>
12#include <spl.h>
13#include <asm/arch/cpu.h>
14#include <asm/arch/hardware.h>
15#include <asm/arch/omap.h>
16#include <asm/arch/ddr_defs.h>
17#include <asm/arch/clock.h>
18#include <asm/arch/gpio.h>
19#include <asm/arch/mmc_host_def.h>
20#include <asm/arch/sys_proto.h>
21#include <asm/arch/mem.h>
22#include <asm/io.h>
23#include <asm/emif.h>
24#include <asm/gpio.h>
25#include <i2c.h>
26#include <miiphy.h>
27#include <cpsw.h>
28#include <power/tps65217.h>
29#include <environment.h>
30#include <watchdog.h>
31#include "board.h"
32
33DECLARE_GLOBAL_DATA_PTR;
34
35#ifdef CONFIG_SPL_BUILD
36static const struct ddr_data ddr2_data = {
Tom Rinic4f80f52014-07-07 21:40:16 -040037 .datardsratio0 = MT47H128M16RT25E_RD_DQS,
38 .datafwsratio0 = MT47H128M16RT25E_PHY_FIFO_WE,
39 .datawrsratio0 = MT47H128M16RT25E_PHY_WR_DATA,
Ash Charles2d92ba82014-05-07 08:24:11 -070040};
41
42static const struct cmd_control ddr2_cmd_ctrl_data = {
43 .cmd0csratio = MT47H128M16RT25E_RATIO,
Ash Charles2d92ba82014-05-07 08:24:11 -070044
45 .cmd1csratio = MT47H128M16RT25E_RATIO,
Ash Charles2d92ba82014-05-07 08:24:11 -070046
47 .cmd2csratio = MT47H128M16RT25E_RATIO,
Ash Charles2d92ba82014-05-07 08:24:11 -070048};
49
50static const struct emif_regs ddr2_emif_reg_data = {
51 .sdram_config = MT47H128M16RT25E_EMIF_SDCFG,
52 .ref_ctrl = MT47H128M16RT25E_EMIF_SDREF,
53 .sdram_tim1 = MT47H128M16RT25E_EMIF_TIM1,
54 .sdram_tim2 = MT47H128M16RT25E_EMIF_TIM2,
55 .sdram_tim3 = MT47H128M16RT25E_EMIF_TIM3,
56 .emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY,
57};
58
59#ifdef CONFIG_SPL_OS_BOOT
60int spl_start_uboot(void)
61{
62 /* break into full u-boot on 'c' */
63 return serial_tstc() && serial_getc() == 'c';
64}
65#endif
66
67#define OSC (V_OSCK/1000000)
68const struct dpll_params dpll_ddr = {266, OSC-1, 1, -1, -1, -1, -1};
69
70const struct dpll_params *get_dpll_ddr_params(void)
71{
72 return &dpll_ddr;
73}
74
75void set_uart_mux_conf(void)
76{
77 enable_uart0_pin_mux();
78}
79
80void set_mux_conf_regs(void)
81{
82 enable_board_pin_mux();
83}
84
85const struct ctrl_ioregs ioregs = {
86 .cm0ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
87 .cm1ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
88 .cm2ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
89 .dt0ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
90 .dt1ioctl = MT47H128M16RT25E_IOCTRL_VALUE,
91};
92
93void sdram_init(void)
94{
95 config_ddr(266, &ioregs, &ddr2_data,
96 &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0);
97}
98#endif
99
100int board_init(void)
101{
102#if defined(CONFIG_HW_WATCHDOG)
103 hw_watchdog_init();
104#endif
105
106 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
107 gpmc_init();
108
109 return 0;
110}
111
112#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
113 (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
114static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
115
116static void cpsw_control(int enabled)
117{
118 /* VTP can be added here */
119
120 return;
121}
122
123static struct cpsw_slave_data cpsw_slaves[] = {
124 {
125 .slave_reg_ofs = 0x208,
126 .sliver_reg_ofs = 0xd80,
127 .phy_addr = 0,
128 .phy_if = PHY_INTERFACE_MODE_RGMII,
129 },
130};
131
132static struct cpsw_platform_data cpsw_data = {
133 .mdio_base = CPSW_MDIO_BASE,
134 .cpsw_base = CPSW_BASE,
135 .mdio_div = 0xff,
136 .channels = 8,
137 .cpdma_reg_ofs = 0x800,
138 .slaves = 1,
139 .slave_data = cpsw_slaves,
140 .ale_reg_ofs = 0xd00,
141 .ale_entries = 1024,
142 .host_port_reg_ofs = 0x108,
143 .hw_stats_reg_ofs = 0x900,
144 .bd_ram_ofs = 0x2000,
145 .mac_control = (1 << 5),
146 .control = cpsw_control,
147 .host_port_num = 0,
148 .version = CPSW_CTRL_VERSION_2,
149};
150
151int board_eth_init(bd_t *bis)
152{
153 int rv, n = 0;
154 uint8_t mac_addr[6];
155 uint32_t mac_hi, mac_lo;
156 const char *devname;
157
158 if (!eth_getenv_enetaddr("ethaddr", mac_addr)) {
159 /* try reading mac address from efuse */
160 mac_lo = readl(&cdev->macid0l);
161 mac_hi = readl(&cdev->macid0h);
162 mac_addr[0] = mac_hi & 0xFF;
163 mac_addr[1] = (mac_hi & 0xFF00) >> 8;
164 mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
165 mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
166 mac_addr[4] = mac_lo & 0xFF;
167 mac_addr[5] = (mac_lo & 0xFF00) >> 8;
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500168 if (is_valid_ethaddr(mac_addr))
Ash Charles2d92ba82014-05-07 08:24:11 -0700169 eth_setenv_enetaddr("ethaddr", mac_addr);
170 }
171
172 writel((RGMII_MODE_ENABLE | RGMII_INT_DELAY), &cdev->miisel);
173
174 rv = cpsw_register(&cpsw_data);
175 if (rv < 0)
176 printf("Error %d registering CPSW switch\n", rv);
177 else
178 n += rv;
179
180 /*
181 *
182 * CPSW RGMII Internal Delay Mode is not supported in all PVT
183 * operating points. So we must set the TX clock delay feature
184 * in the KSZ9021 PHY. Since we only support a single ethernet
185 * device in U-Boot, we only do this for the current instance.
186 */
187 devname = miiphy_get_current_dev();
188 /* max rx/tx clock delay, min rx/tx control delay */
189 miiphy_write(devname, 0x0, 0x0b, 0x8104);
190 miiphy_write(devname, 0x0, 0xc, 0xa0a0);
191
192 /* min rx data delay */
193 miiphy_write(devname, 0x0, 0x0b, 0x8105);
194 miiphy_write(devname, 0x0, 0x0c, 0x0000);
195
196 /* min tx data delay */
197 miiphy_write(devname, 0x0, 0x0b, 0x8106);
198 miiphy_write(devname, 0x0, 0x0c, 0x0000);
199
200 return n;
201}
202#endif