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
|
/*
* Copyright (C) 2008, Guennadi Liakhovetski <lg@denx.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <netdev.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
/* dram_init must store complete ramsize in gd->ram_size */
gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1,
PHYS_SDRAM_1_SIZE);
return 0;
}
int board_early_init_f(void)
{
int i;
/* CS0: Nor Flash */
/*
* CS0L and CS0A values are from the RedBoot sources by Freescale
* and are also equal to those used by Sascha Hauer for the Phytec
* i.MX31 board. CS0U is just a slightly optimized hardware default:
* the only non-zero field "Wait State Control" is set to half the
* default value.
*/
static const struct mxc_weimcs cs0 = {
/* sp wp bcd bcs psz pme sync dol cnc wsc ew wws edc */
CSCR_U(0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0),
/* oea oen ebwa ebwn csa ebc dsz csn psr cre wrap csen */
CSCR_L(1, 0, 0, 0, 0, 1, 5, 0, 0, 0, 1, 1),
/* ebra ebrn rwa rwn mum lah lbn lba dww dct wwu age cnc2 fce*/
CSCR_A(0, 0, 7, 2, 0, 0, 2, 1, 0, 0, 0, 0, 0, 0)
};
mxc_setup_weimcs(0, &cs0);
/* setup pins for UART1 */
mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
mx31_gpio_mux(MUX_CTS1__UART1_CTS_B);
/* SPI2 */
mx31_gpio_mux(MUX_CSPI2_SS2__CSPI2_SS2_B);
mx31_gpio_mux(MUX_CSPI2_SCLK__CSPI2_CLK);
mx31_gpio_mux(MUX_CSPI2_SPI_RDY__CSPI2_DATAREADY_B);
mx31_gpio_mux(MUX_CSPI2_MOSI__CSPI2_MOSI);
mx31_gpio_mux(MUX_CSPI2_MISO__CSPI2_MISO);
mx31_gpio_mux(MUX_CSPI2_SS0__CSPI2_SS0_B);
mx31_gpio_mux(MUX_CSPI2_SS1__CSPI2_SS1_B);
/* start SPI2 clock */
__REG(CCM_CGR2) = __REG(CCM_CGR2) | (3 << 4);
/* PBC setup */
/* Enable UART transceivers also reset the Ethernet/external UART */
readw(CS4_BASE + 4);
writew(0x8023, CS4_BASE + 4);
/* RedBoot also has an empty loop with 100000 iterations here -
* clock doesn't run yet */
for (i = 0; i < 100000; i++)
;
/* Clear the reset, toggle the LEDs */
writew(0xDF, CS4_BASE + 6);
/* clock still doesn't run */
for (i = 0; i < 100000; i++)
;
/* See 1.5.4 in IMX31ADSE_PERI_BUS_CNTRL_CPLD_RM.pdf */
readb(CS4_BASE + 8);
readb(CS4_BASE + 7);
readb(CS4_BASE + 8);
readb(CS4_BASE + 7);
return 0;
}
int board_init(void)
{
gd->bd->bi_boot_params = 0x80000100; /* adress of boot parameters */
return 0;
}
int checkboard(void)
{
printf("Board: MX31ADS\n");
return 0;
}
#ifdef CONFIG_CMD_NET
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_CS8900
rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
#endif
return rc;
}
#endif
|
