source: SVN/rincon/u-boot/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.3 KB
Line 
1/*
2 * Copyright (C) 2008 Atmel Corporation
3 *
4 * See file CREDITS for list of people who contributed to this project.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
18 * Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20#include <common.h>
21#include <netdev.h>
22
23#include <asm/io.h>
24#include <asm/sdram.h>
25#include <asm/arch/clk.h>
26#include <asm/arch/gpio.h>
27#include <asm/arch/hmatrix.h>
28
29DECLARE_GLOBAL_DATA_PTR;
30
31static const struct sdram_config sdram_config = {
32        /* MT48LC4M32B2P-6 (16 MB) */
33        .data_bits      = SDRAM_DATA_32BIT,
34        .row_bits       = 12,
35        .col_bits       = 8,
36        .bank_bits      = 2,
37        .cas            = 3,
38        .twr            = 2,
39        .trc            = 7,
40        .trp            = 2,
41        .trcd           = 2,
42        .tras           = 5,
43        .txsr           = 5,
44        /* 15.6 us */
45        .refresh_period = (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
46};
47
48int board_early_init_f(void)
49{
50        /* Enable SDRAM in the EBI mux */
51        hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
52
53        gpio_enable_ebi();
54        gpio_enable_usart3();
55#if defined(CONFIG_MACB)
56        gpio_enable_macb0();
57#endif
58#if defined(CONFIG_MMC)
59        gpio_enable_mmci();
60#endif
61
62        return 0;
63}
64
65phys_size_t initdram(int board_type)
66{
67        unsigned long expected_size;
68        unsigned long actual_size;
69        void *sdram_base;
70
71        sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
72
73        expected_size = sdram_init(sdram_base, &sdram_config);
74        actual_size = get_ram_size(sdram_base, expected_size);
75
76        unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
77
78        if (expected_size != actual_size)
79                printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
80                                actual_size >> 20, expected_size >> 20);
81
82        return actual_size;
83}
84
85void board_init_info(void)
86{
87        gd->bd->bi_phy_id[0] = 0x01;
88}
89
90#if defined(CONFIG_MACB) && defined(CONFIG_CMD_NET)
91int board_eth_init(bd_t *bi)
92{
93        return macb_eth_initialize(0, (void *)MACB0_BASE, bi->bi_phy_id[0]);
94}
95#endif
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