summaryrefslogtreecommitdiff
path: root/board/samsung/smdk2410/smdk2410.c
blob: 1abc4ba6a5041dc1069b8557e02b197590959507 (plain)
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
/*
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <mgroeger@sysgo.de>
 *
 * (C) Copyright 2002
 * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <netdev.h>
#include <asm/arch/s3c24x0_cpu.h>

DECLARE_GLOBAL_DATA_PTR;

#define FCLK_SPEED 1

#if FCLK_SPEED==0		/* Fout = 203MHz, Fin = 12MHz for Audio */
#define M_MDIV	0xC3
#define M_PDIV	0x4
#define M_SDIV	0x1
#elif FCLK_SPEED==1		/* Fout = 202.8MHz */
#define M_MDIV	0xA1
#define M_PDIV	0x3
#define M_SDIV	0x1
#endif

#define USB_CLOCK 1

#if USB_CLOCK==0
#define U_M_MDIV	0xA1
#define U_M_PDIV	0x3
#define U_M_SDIV	0x1
#elif USB_CLOCK==1
#define U_M_MDIV	0x48
#define U_M_PDIV	0x3
#define U_M_SDIV	0x2
#endif

static inline void delay (unsigned long loops)
{
	__asm__ volatile ("1:\n"
	  "subs %0, %1, #1\n"
	  "bne 1b":"=r" (loops):"0" (loops));
}

/*
 * Miscellaneous platform dependent initialisations
 */

int board_init (void)
{
	struct s3c24x0_clock_power * const clk_power =
					s3c24x0_get_base_clock_power();
	struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();

	/* to reduce PLL lock time, adjust the LOCKTIME register */
	clk_power->locktime = 0xFFFFFF;

	/* configure MPLL */
	clk_power->mpllcon = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);

	/* some delay between MPLL and UPLL */
	delay (4000);

	/* configure UPLL */
	clk_power->upllcon = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);

	/* some delay between MPLL and UPLL */
	delay (8000);

	/* set up the I/O ports */
	gpio->gpacon = 0x007FFFFF;
	gpio->gpbcon = 0x00044555;
	gpio->gpbup = 0x000007FF;
	gpio->gpccon = 0xAAAAAAAA;
	gpio->gpcup = 0x0000FFFF;
	gpio->gpdcon = 0xAAAAAAAA;
	gpio->gpdup = 0x0000FFFF;
	gpio->gpecon = 0xAAAAAAAA;
	gpio->gpeup = 0x0000FFFF;
	gpio->gpfcon = 0x000055AA;
	gpio->gpfup = 0x000000FF;
	gpio->gpgcon = 0xFF95FFBA;
	gpio->gpgup = 0x0000FFFF;
	gpio->gphcon = 0x002AFAAA;
	gpio->gphup = 0x000007FF;

	/* arch number of SMDK2410-Board */
	gd->bd->bi_arch_number = MACH_TYPE_SMDK2410;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = 0x30000100;

	icache_enable();
	dcache_enable();

	return 0;
}

int dram_init (void)
{
	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;

	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

/*
 * Hardcoded flash setup:
 * Flash 0 is a non-CFI AMD AM29LV800BB flash.
 */
ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
{
	info->portwidth = FLASH_CFI_16BIT;
	info->chipwidth = FLASH_CFI_BY16;
	info->interface = FLASH_CFI_X16;
	return 1;
}