source: SVN/rincon/u-boot/board/samsung/smdk6400/smdk6400.c

Last change on this file was 55, checked in by Tim Harvey, 3 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 3.3 KB
Line 
1/*
2 * (C) Copyright 2002
3 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
4 * Marius Groeger <mgroeger@sysgo.de>
5 *
6 * (C) Copyright 2002
7 * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
8 *
9 * (C) Copyright 2008
10 * Guennadi Liakhovetki, DENX Software Engineering, <lg@denx.de>
11 *
12 * See file CREDITS for list of people who contributed to this
13 * project.
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of
18 * the License, or (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 * MA 02111-1307 USA
29 */
30
31#include <common.h>
32#include <s3c6400.h>
33
34/* ------------------------------------------------------------------------- */
35#define CS8900_Tacs     0x0     /* 0clk         address set-up          */
36#define CS8900_Tcos     0x4     /* 4clk         chip selection set-up   */
37#define CS8900_Tacc     0xE     /* 14clk        access cycle            */
38#define CS8900_Tcoh     0x1     /* 1clk         chip selection hold     */
39#define CS8900_Tah      0x4     /* 4clk         address holding time    */
40#define CS8900_Tacp     0x6     /* 6clk         page mode access cycle  */
41#define CS8900_PMC      0x0     /* normal(1data)page mode configuration */
42
43static inline void delay(unsigned long loops)
44{
45        __asm__ volatile ("1:\n" "subs %0, %1, #1\n"
46                          "bne 1b"
47                          : "=r" (loops) : "0" (loops));
48}
49
50/*
51 * Miscellaneous platform dependent initialisations
52 */
53
54static void cs8900_pre_init(void)
55{
56        SROM_BW_REG &= ~(0xf << 4);
57        SROM_BW_REG |= (1 << 7) | (1 << 6) | (1 << 4);
58        SROM_BC1_REG = ((CS8900_Tacs << 28) + (CS8900_Tcos << 24) +
59                        (CS8900_Tacc << 16) + (CS8900_Tcoh << 12) +
60                        (CS8900_Tah << 8) + (CS8900_Tacp << 4) + CS8900_PMC);
61}
62
63int board_init(void)
64{
65        DECLARE_GLOBAL_DATA_PTR;
66
67        cs8900_pre_init();
68
69        /* NOR-flash in SROM0 */
70
71        /* Enable WAIT */
72        SROM_BW_REG |= 4 | 8 | 1;
73
74        gd->bd->bi_arch_number = MACH_TYPE;
75        gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
76
77        return 0;
78}
79
80int dram_init(void)
81{
82        DECLARE_GLOBAL_DATA_PTR;
83
84        gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
85        gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
86
87        return 0;
88}
89
90#ifdef CONFIG_DISPLAY_BOARDINFO
91int checkboard(void)
92{
93        printf("Board:   SMDK6400\n");
94        return 0;
95}
96#endif
97
98#ifdef CONFIG_ENABLE_MMU
99ulong virt_to_phy_smdk6400(ulong addr)
100{
101        if ((0xc0000000 <= addr) && (addr < 0xc8000000))
102                return addr - 0xc0000000 + 0x50000000;
103        else
104                printf("do not support this address : %08lx\n", addr);
105
106        return addr;
107}
108#endif
109
110#if defined(CONFIG_CMD_NAND) && defined(CFG_NAND_LEGACY)
111#include <linux/mtd/nand.h>
112extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
113void nand_init(void)
114{
115        nand_probe(CFG_NAND_BASE);
116        if (nand_dev_desc[0].ChipID != NAND_ChipID_UNKNOWN)
117                print_size(nand_dev_desc[0].totlen, "\n");
118}
119#endif
120
121ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t *info)
122{
123        if (banknum == 0) {     /* non-CFI boot flash */
124                info->portwidth = FLASH_CFI_16BIT;
125                info->chipwidth = FLASH_CFI_BY16;
126                info->interface = FLASH_CFI_X16;
127                return 1;
128        } else
129                return 0;
130}
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