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