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
|
/*
* Copyright (C) 2006 Atmel Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/sdram.h>
#include <asm/arch/clk.h>
#include <asm/arch/gpio.h>
#include <asm/arch/hmatrix.h>
#include <asm/arch/mmu.h>
#include <asm/arch/portmux.h>
#include <netdev.h>
DECLARE_GLOBAL_DATA_PTR;
struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
{
.virt_pgno = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
.nr_pages = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
.phys = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
| MMU_VMR_CACHE_NONE,
}, {
.virt_pgno = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
.nr_pages = EBI_SDRAM_SIZE >> PAGE_SHIFT,
.phys = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
| MMU_VMR_CACHE_WRBACK,
},
};
static const struct sdram_config sdram_config = {
.data_bits = SDRAM_DATA_16BIT,
.row_bits = 13,
.col_bits = 9,
.bank_bits = 2,
.cas = 3,
.twr = 2,
.trc = 7,
.trp = 2,
.trcd = 2,
.tras = 5,
.txsr = 5,
/* 7.81 us */
.refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
};
int board_early_init_f(void)
{
/* Enable SDRAM in the EBI mux */
hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
portmux_enable_ebi(16, 23, 0, PORTMUX_DRIVE_HIGH);
portmux_enable_usart1(PORTMUX_DRIVE_MIN);
#if defined(CONFIG_MACB)
portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
portmux_enable_macb1(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
#endif
#if defined(CONFIG_MMC)
portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
#endif
#if defined(CONFIG_ATMEL_SPI)
portmux_enable_spi0(1 << 0, PORTMUX_DRIVE_LOW);
#endif
return 0;
}
phys_size_t initdram(int board_type)
{
unsigned long expected_size;
unsigned long actual_size;
void *sdram_base;
sdram_base = uncached(EBI_SDRAM_BASE);
expected_size = sdram_init(sdram_base, &sdram_config);
actual_size = get_ram_size(sdram_base, expected_size);
if (expected_size != actual_size)
printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
actual_size >> 20, expected_size >> 20);
return actual_size;
}
int board_early_init_r(void)
{
gd->bd->bi_phy_id[0] = 0x01;
gd->bd->bi_phy_id[1] = 0x03;
return 0;
}
#ifdef CONFIG_CMD_NET
int board_eth_init(bd_t *bi)
{
macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
macb_eth_initialize(1, (void *)ATMEL_BASE_MACB1, bi->bi_phy_id[1]);
return 0;
}
#endif
/* SPI chip select control */
#ifdef CONFIG_ATMEL_SPI
#include <spi.h>
#define ATNGW100_DATAFLASH_CS_PIN GPIO_PIN_PA(3)
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && cs == 0;
}
void spi_cs_activate(struct spi_slave *slave)
{
gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 0);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 1);
}
#endif /* CONFIG_ATMEL_SPI */
|
