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
172
173
174
|
/*
* Copyright (C) 2016 David Lechner <david@lechnology.com>
*
* Based on da850evm.c
*
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
*
* Based on da830evm.c. Original Copyrights follow:
*
* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <i2c.h>
#include <net.h>
#include <netdev.h>
#include <spi.h>
#include <spi_flash.h>
#include <asm/arch/hardware.h>
#include <asm/arch/pinmux_defs.h>
#include <asm/io.h>
#include <asm/arch/davinci_misc.h>
#include <linux/errno.h>
#include <hwconfig.h>
#ifdef CONFIG_MMC_DAVINCI
#include <mmc.h>
#include <asm/arch/sdmmc_defs.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
u8 board_rev;
#define EEPROM_I2C_ADDR 0x50
#define EEPROM_REV_OFFSET 0x3F00
#define EEPROM_MAC_OFFSET 0x3F06
#ifdef CONFIG_MMC_DAVINCI
static struct davinci_mmc mmc_sd0 = {
.reg_base = (struct davinci_mmc_regs *)DAVINCI_MMC_SD0_BASE,
.host_caps = MMC_MODE_4BIT, /* DA850 supports only 4-bit SD/MMC */
.voltages = MMC_VDD_32_33 | MMC_VDD_33_34,
.version = MMC_CTLR_VERSION_2,
};
int board_mmc_init(bd_t *bis)
{
mmc_sd0.input_clk = clk_get(DAVINCI_MMCSD_CLKID);
/* Add slot-0 to mmc subsystem */
return davinci_mmc_init(bis, &mmc_sd0);
}
#endif
const struct pinmux_resource pinmuxes[] = {
PINMUX_ITEM(spi0_pins_base),
PINMUX_ITEM(spi0_pins_scs0),
PINMUX_ITEM(uart1_pins_txrx),
PINMUX_ITEM(i2c0_pins),
PINMUX_ITEM(mmc0_pins),
};
const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
const struct lpsc_resource lpsc[] = {
{ DAVINCI_LPSC_SPI0 }, /* Serial Flash */
{ DAVINCI_LPSC_UART1 }, /* console */
{ DAVINCI_LPSC_MMC_SD },
};
const int lpsc_size = ARRAY_SIZE(lpsc);
u32 get_board_rev(void)
{
u8 buf[2];
if (!board_rev) {
if (i2c_read(EEPROM_I2C_ADDR, EEPROM_REV_OFFSET, 2, buf, 2)) {
printf("\nBoard revision read failed!\n");
} else {
/*
* Board rev 3 has MAC address at EEPROM_REV_OFFSET.
* Other revisions have checksum at EEPROM_REV_OFFSET+1
* to detect this.
*/
if ((buf[0] ^ buf[1]) == 0xFF)
board_rev = buf[0];
else
board_rev = 3;
}
}
return board_rev;
}
/*
* The Bluetooth MAC address serves as the board serial number.
*/
void get_board_serial(struct tag_serialnr *serialnr)
{
u32 offset;
u8 buf[6];
if (!board_rev)
board_rev = get_board_rev();
/* Board rev 3 has MAC address where rev should be */
offset = (board_rev == 3) ? EEPROM_REV_OFFSET : EEPROM_MAC_OFFSET;
if (i2c_read(EEPROM_I2C_ADDR, offset, 2, buf, 6)) {
printf("\nBoard serial read failed!\n");
} else {
u8 *nr;
nr = (u8 *)&serialnr->low;
nr[0] = buf[5];
nr[1] = buf[4];
nr[2] = buf[3];
nr[3] = buf[2];
nr = (u8 *)&serialnr->high;
nr[0] = buf[1];
nr[1] = buf[0];
nr[2] = 0;
nr[3] = 0;
}
}
int board_early_init_f(void)
{
/*
* Power on required peripherals
* ARM does not have access by default to PSC0 and PSC1
* assuming here that the DSP bootloader has set the IOPU
* such that PSC access is available to ARM
*/
if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
return 1;
return 0;
}
int board_init(void)
{
irq_init();
/* arch number of the board */
/* LEGO didn't register for a unique number and uses da850evm */
gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA850_EVM;
/* address of boot parameters */
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
/* setup the SUSPSRC for ARM to control emulation suspend */
writel(readl(&davinci_syscfg_regs->suspsrc) &
~(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
DAVINCI_SYSCFG_SUSPSRC_SPI0 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
DAVINCI_SYSCFG_SUSPSRC_UART1),
&davinci_syscfg_regs->suspsrc);
/* configure pinmux settings */
if (davinci_configure_pin_mux_items(pinmuxes, ARRAY_SIZE(pinmuxes)))
return 1;
/* enable the console UART */
writel((DAVINCI_UART_PWREMU_MGMT_FREE | DAVINCI_UART_PWREMU_MGMT_URRST |
DAVINCI_UART_PWREMU_MGMT_UTRST),
&davinci_uart1_ctrl_regs->pwremu_mgmt);
return 0;
}
|
