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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* (C) Copyright 2000-2005
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2005-2007
* Beijing UD Technology Co., Ltd., taihusupport@amcc.com
*
* 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 <command.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <spi.h>
#include <asm/gpio.h>
extern int lcd_init(void);
/*
* board_early_init_f
*/
int board_early_init_f(void)
{
lcd_init();
mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr(uicer, 0x00000000); /* disable all ints */
mtdcr(uiccr, 0x00000000);
mtdcr(uicpr, 0xFFFF7F00); /* set int polarities */
mtdcr(uictr, 0x00000000); /* set int trigger levels */
mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */
mtebc(pb3ap, CFG_EBC_PB3AP); /* memory bank 3 (CPLD_LCM) initialization */
mtebc(pb3cr, CFG_EBC_PB3CR);
/*
* Configure CPC0_PCI to enable PerWE as output
* and enable the internal PCI arbiter
*/
mtdcr(cpc0_pci, CPC0_PCI_SPE | CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
return 0;
}
/*
* Check Board Identity:
*/
int checkboard(void)
{
char *s = getenv("serial#");
puts("Board: Taihu - AMCC PPC405EP Evaluation Board");
if (s != NULL) {
puts(", serial# ");
puts(s);
}
putc('\n');
return 0;
}
/*************************************************************************
* long int initdram
*
************************************************************************/
long int initdram(int board)
{
return CFG_SDRAM_SIZE_PER_BANK * CFG_SDRAM_BANKS; /* 128Mbytes */
}
static int do_sw_stat(cmd_tbl_t* cmd_tp, int flags, int argc, char *argv[])
{
char stat;
int i;
stat = in_8((u8 *) CPLD_REG0_ADDR);
printf("SW2 status: ");
for (i=0; i<4; i++) /* 4-position */
printf("%d:%s ", i, stat & (0x08 >> i)?"on":"off");
printf("\n");
return 0;
}
U_BOOT_CMD (
sw2_stat, 1, 1, do_sw_stat,
"sw2_stat - show status of switch 2\n",
NULL
);
static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char *argv[])
{
int led_no;
if (argc != 3) {
printf("%s", cmd_tp->usage);
return -1;
}
led_no = simple_strtoul(argv[1], NULL, 16);
if (led_no != 1 && led_no != 2) {
printf("%s", cmd_tp->usage);
return -1;
}
if (strcmp(argv[2],"off") == 0x0) {
if (led_no == 1)
gpio_write_bit(30, 1);
else
gpio_write_bit(31, 1);
} else if (strcmp(argv[2],"on") == 0x0) {
if (led_no == 1)
gpio_write_bit(30, 0);
else
gpio_write_bit(31, 0);
} else {
printf("%s", cmd_tp->usage);
return -1;
}
return 0;
}
U_BOOT_CMD (
led_ctl, 3, 1, do_led_ctl,
"led_ctl - make led 1 or 2 on or off\n",
"<led_no> <on/off> - make led <led_no> on/off,\n"
"\tled_no is 1 or 2\t"
);
#define SPI_CS_GPIO0 0
#define SPI_SCLK_GPIO14 14
#define SPI_DIN_GPIO15 15
#define SPI_DOUT_GPIO16 16
void spi_scl(int bit)
{
gpio_write_bit(SPI_SCLK_GPIO14, bit);
}
void spi_sda(int bit)
{
gpio_write_bit(SPI_DOUT_GPIO16, bit);
}
unsigned char spi_read(void)
{
return (unsigned char)gpio_read_in_bit(SPI_DIN_GPIO15);
}
void taihu_spi_chipsel(int cs)
{
gpio_write_bit(SPI_CS_GPIO0, cs);
}
spi_chipsel_type spi_chipsel[]= {
taihu_spi_chipsel
};
int spi_chipsel_cnt = sizeof(spi_chipsel) / sizeof(spi_chipsel[0]);
#ifdef CONFIG_PCI
static unsigned char int_lines[32] = {
29, 30, 27, 28, 29, 30, 25, 27,
29, 30, 27, 28, 29, 30, 27, 28,
29, 30, 27, 28, 29, 30, 27, 28,
29, 30, 27, 28, 29, 30, 27, 28};
static void taihu_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
{
unsigned char int_line = int_lines[PCI_DEV(dev) & 31];
pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
}
int pci_pre_init(struct pci_controller *hose)
{
hose->fixup_irq = taihu_pci_fixup_irq;
return 1;
}
#endif /* CONFIG_PCI */
|
