]> git.sur5r.net Git - u-boot/blob - board/BuR/brppt1/board.c
board/BuR: rename tseries board to brppt1
[u-boot] / board / BuR / brppt1 / board.c
1 /*
2  * board.c
3  *
4  * Board functions for B&R BRPPT1
5  *
6  * Copyright (C) 2013 Hannes Schmelzer <oe5hpm@oevsv.at>
7  * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
8  *
9  * SPDX-License-Identifier:     GPL-2.0+
10  *
11  */
12
13 #include <common.h>
14 #include <errno.h>
15 #include <spl.h>
16 #include <asm/arch/cpu.h>
17 #include <asm/arch/hardware.h>
18 #include <asm/arch/omap.h>
19 #include <asm/arch/ddr_defs.h>
20 #include <asm/arch/clock.h>
21 #include <asm/arch/gpio.h>
22 #include <asm/arch/sys_proto.h>
23 #include <asm/arch/mem.h>
24 #include <asm/io.h>
25 #include <asm/emif.h>
26 #include <asm/gpio.h>
27 #include <i2c.h>
28 #include <power/tps65217.h>
29 #include "../common/bur_common.h"
30 #include <lcd.h>
31 #include <watchdog.h>
32
33 DECLARE_GLOBAL_DATA_PTR;
34
35 /* --------------------------------------------------------------------------*/
36 /* -- defines for GPIO -- */
37 #define REPSWITCH       (0+20)  /* GPIO0_20 */
38
39 #if defined(CONFIG_SPL_BUILD)
40 /* TODO: check ram-timing ! */
41 static const struct ddr_data ddr3_data = {
42         .datardsratio0 = MT41K256M16HA125E_RD_DQS,
43         .datawdsratio0 = MT41K256M16HA125E_WR_DQS,
44         .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
45         .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
46 };
47
48 static const struct cmd_control ddr3_cmd_ctrl_data = {
49         .cmd0csratio = MT41K256M16HA125E_RATIO,
50         .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
51
52         .cmd1csratio = MT41K256M16HA125E_RATIO,
53         .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
54
55         .cmd2csratio = MT41K256M16HA125E_RATIO,
56         .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
57 };
58
59 static struct emif_regs ddr3_emif_reg_data = {
60         .sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
61         .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
62         .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
63         .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
64         .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
65         .zq_config = MT41K256M16HA125E_ZQ_CFG,
66         .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
67 };
68
69 static const struct ctrl_ioregs ddr3_ioregs = {
70         .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
71         .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
72         .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
73         .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
74         .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
75 };
76
77 #ifdef CONFIG_SPL_OS_BOOT
78 /*
79  * called from spl_nand.c
80  * return 0 for loading linux, return 1 for loading u-boot
81  */
82 int spl_start_uboot(void)
83 {
84         if (0 == gpio_get_value(REPSWITCH)) {
85                 mdelay(1000);
86                 printf("SPL: entering u-boot instead kernel image.\n");
87                 return 1;
88         }
89         return 0;
90 }
91 #endif /* CONFIG_SPL_OS_BOOT */
92
93 #define OSC     (V_OSCK/1000000)
94 static const struct dpll_params dpll_ddr3 = { 400, OSC-1, 1, -1, -1, -1, -1};
95
96 void am33xx_spl_board_init(void)
97 {
98         struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
99         /*struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;*/
100         struct cm_dpll *const cmdpll = (struct cm_dpll *)CM_DPLL;
101
102         /*
103          * in TRM they write a reset value of 1 (=CLK_M_OSC) for the
104          * CLKSEL_TIMER6_CLK Register, in fact reset value is 0, so we need set
105          * the source of timer6 clk to CLK_M_OSC
106          */
107         writel(0x01, &cmdpll->clktimer6clk);
108
109         /* enable additional clocks of modules which are accessed later */
110         u32 *const clk_domains[] = {
111                 &cmper->lcdcclkstctrl,
112                 0
113         };
114
115         u32 *const clk_modules_tsspecific[] = {
116                 &cmper->lcdclkctrl,
117                 &cmper->timer5clkctrl,
118                 &cmper->timer6clkctrl,
119                 0
120         };
121         do_enable_clocks(clk_domains, clk_modules_tsspecific, 1);
122
123         /* setup LCD-Pixel Clock */
124         writel(0x2, &cmdpll->clklcdcpixelclk);  /* clock comes from perPLL M2 */
125
126         /* setup I2C */
127         enable_i2c_pin_mux();
128         i2c_set_bus_num(0);
129         i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE);
130         pmicsetup(0);
131
132         gpio_direction_output(64+29, 1); /* switch NAND_RnB to GPMC_WAIT1 */
133         gpio_direction_output(64+28, 1); /* switch MII2_CRS to GPMC_WAIT0 */
134 }
135
136 const struct dpll_params *get_dpll_ddr_params(void)
137 {
138         return &dpll_ddr3;
139 }
140
141 void sdram_init(void)
142 {
143         config_ddr(400, &ddr3_ioregs,
144                    &ddr3_data,
145                    &ddr3_cmd_ctrl_data,
146                    &ddr3_emif_reg_data, 0);
147 }
148 #endif /* CONFIG_SPL_BUILD */
149
150 /* Basic board specific setup.  Pinmux has been handled already. */
151 int board_init(void)
152 {
153 #if defined(CONFIG_HW_WATCHDOG)
154         hw_watchdog_init();
155 #endif
156         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
157 #ifdef CONFIG_NAND
158         gpmc_init();
159 #endif
160         return 0;
161 }
162
163 #ifdef CONFIG_BOARD_LATE_INIT
164 int board_late_init(void)
165 {
166         if (0 == gpio_get_value(REPSWITCH)) {
167                 lcd_position_cursor(1, 8);
168                 lcd_puts(
169                 "switching to network-console ...       ");
170                 setenv("bootcmd", "run netconsole");
171         }
172         return 0;
173 }
174 #endif /* CONFIG_BOARD_LATE_INIT */