• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * board.c
4  *
5  * Board functions for B&R BRXRE1 Board
6  *
7  * Copyright (C) 2013 Hannes Schmelzer <oe5hpm@oevsv.at>
8  * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com
9  *
10  */
11 #include <common.h>
12 #include <env.h>
13 #include <errno.h>
14 #include <init.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 <dm.h>
28 #include <power/tps65217.h>
29 #include "../common/bur_common.h"
30 #include "../common/br_resetc.h"
31 
32 /* -------------------------------------------------------------------------*/
33 /* -- defines for used GPIO Hardware -- */
34 #define ESC_KEY					(0 + 19)
35 #define LCD_PWR					(0 + 5)
36 
37 #define	RSTCTRL_FORCE_PWR_NEN			0x04
38 #define	RSTCTRL_CAN_STB				0x40
39 
40 DECLARE_GLOBAL_DATA_PTR;
41 
42 #if defined(CONFIG_SPL_BUILD)
43 static const struct ddr_data ddr3_data = {
44 	.datardsratio0 = MT41K256M16HA125E_RD_DQS,
45 	.datawdsratio0 = MT41K256M16HA125E_WR_DQS,
46 	.datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
47 	.datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
48 };
49 
50 static const struct cmd_control ddr3_cmd_ctrl_data = {
51 	.cmd0csratio = MT41K256M16HA125E_RATIO,
52 	.cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
53 
54 	.cmd1csratio = MT41K256M16HA125E_RATIO,
55 	.cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
56 
57 	.cmd2csratio = MT41K256M16HA125E_RATIO,
58 	.cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
59 };
60 
61 static struct emif_regs ddr3_emif_reg_data = {
62 	.sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
63 	.ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
64 	.sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
65 	.sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
66 	.sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
67 	.zq_config = MT41K256M16HA125E_ZQ_CFG,
68 	.emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
69 };
70 
71 static const struct ctrl_ioregs ddr3_ioregs = {
72 	.cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
73 	.cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
74 	.cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
75 	.dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
76 	.dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE,
77 };
78 
79 #define OSC	(V_OSCK / 1000000)
80 const struct dpll_params dpll_ddr3 = { 400, OSC - 1, 1, -1, -1, -1, -1};
81 
am33xx_spl_board_init(void)82 void am33xx_spl_board_init(void)
83 {
84 	int rc;
85 
86 	struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER;
87 	struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;
88 	/*
89 	 * enable additional clocks of modules which are accessed later from
90 	 * VxWorks OS
91 	 */
92 	u32 *const clk_domains[] = { 0 };
93 
94 	u32 *const clk_modules_xre1specific[] = {
95 		&cmwkup->wkup_adctscctrl,
96 		&cmper->spi1clkctrl,
97 		&cmper->dcan0clkctrl,
98 		&cmper->dcan1clkctrl,
99 		&cmper->epwmss0clkctrl,
100 		&cmper->epwmss1clkctrl,
101 		&cmper->epwmss2clkctrl,
102 		&cmper->lcdclkctrl,
103 		&cmper->lcdcclkstctrl,
104 		0
105 	};
106 	do_enable_clocks(clk_domains, clk_modules_xre1specific, 1);
107 	/* power-OFF LCD-Display */
108 	if (gpio_request(LCD_PWR, "LCD_PWR") != 0)
109 		printf("cannot request gpio for LCD_PWR!\n");
110 	else if (gpio_direction_output(LCD_PWR, 0) != 0)
111 		printf("cannot set direction output on LCD_PWR!\n");
112 
113 	/* setup I2C */
114 	enable_i2c_pin_mux();
115 
116 	/* power-ON 3V3 via Resetcontroller */
117 	rc = br_resetc_regset(RSTCTRL_CTRLREG,
118 			      RSTCTRL_FORCE_PWR_NEN | RSTCTRL_CAN_STB);
119 	if (rc != 0)
120 		printf("ERROR: cannot write to resetc (turn on PWR_nEN)!\n");
121 
122 	pmicsetup(0, 0);
123 }
124 
get_dpll_ddr_params(void)125 const struct dpll_params *get_dpll_ddr_params(void)
126 {
127 	return &dpll_ddr3;
128 }
129 
sdram_init(void)130 void sdram_init(void)
131 {
132 	config_ddr(400, &ddr3_ioregs,
133 		   &ddr3_data,
134 		   &ddr3_cmd_ctrl_data,
135 		   &ddr3_emif_reg_data, 0);
136 }
137 #endif /* CONFIG_SPL_BUILD */
138 /*
139  * Basic board specific setup.  Pinmux has been handled already.
140  */
board_init(void)141 int board_init(void)
142 {
143 	/* request common used gpios */
144 	gpio_request(ESC_KEY, "boot-key");
145 
146 	if (power_tps65217_init(0))
147 		printf("WARN: cannot setup PMIC 0x24 @ bus #0, not found!.\n");
148 
149 	return 0;
150 }
151 
152 #ifdef CONFIG_BOARD_LATE_INIT
153 
board_boot_key(void)154 int board_boot_key(void)
155 {
156 	return gpio_get_value(ESC_KEY);
157 }
158 
board_late_init(void)159 int board_late_init(void)
160 {
161 	char othbootargs[128];
162 
163 	br_resetc_bmode();
164 
165 	/* setup othbootargs for bootvx-command (vxWorks bootline) */
166 	snprintf(othbootargs, sizeof(othbootargs),
167 		 "u=vxWorksFTP pw=vxWorks o=0x%08x;0x%08x;0x%08x;0x%08x",
168 		 (u32)gd->fb_base - 0x20,
169 		 (u32)env_get_ulong("vx_memtop", 16, gd->fb_base - 0x20),
170 		 (u32)env_get_ulong("vx_romfsbase", 16, 0),
171 		 (u32)env_get_ulong("vx_romfssize", 16, 0));
172 	env_set("othbootargs", othbootargs);
173 	/*
174 	 * reset VBAR registers to its reset location, VxWorks 6.9.3.2 does
175 	 * expect that vectors are there, original u-boot moves them to _start
176 	 */
177 	__asm__("ldr r0,=0x20000");
178 	__asm__("mcr p15, 0, r0, c12, c0, 0"); /* Set VBAR */
179 
180 	return 0;
181 }
182 #endif /* CONFIG_BOARD_LATE_INIT */
183