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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
/*
* Copyright (C) 2010 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Kyungmin Park <kyungmin.park@samsung.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 <asm/io.h>
#include <asm/arch/adc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/mmc.h>
DECLARE_GLOBAL_DATA_PTR;
struct s5pc210_gpio_part1 *gpio1;
struct s5pc210_gpio_part2 *gpio2;
unsigned int board_rev;
u32 get_board_rev(void)
{
return board_rev;
}
static int get_hwrev(void)
{
return board_rev & 0xFF;
}
static void check_hw_revision(void);
int board_init(void)
{
gpio1 = (struct s5pc210_gpio_part1 *) S5PC210_GPIO_PART1_BASE;
gpio2 = (struct s5pc210_gpio_part2 *) S5PC210_GPIO_PART2_BASE;
gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
check_hw_revision();
printf("HW Revision:\t0x%x\n", board_rev);
return 0;
}
int dram_init(void)
{
gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
return 0;
}
void dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
}
static unsigned short get_adc_value(int channel)
{
struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
unsigned short ret = 0;
unsigned int reg;
unsigned int loop = 0;
writel(channel & 0xF, &adc->adcmux);
writel((1 << 14) | (49 << 6), &adc->adccon);
writel(1000 & 0xffff, &adc->adcdly);
writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
udelay(10);
writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
udelay(10);
do {
udelay(1);
reg = readl(&adc->adccon);
} while (!(reg & (1 << 15)) && (loop++ < 1000));
ret = readl(&adc->adcdat0) & 0xFFF;
return ret;
}
static unsigned int get_hw_revision(void)
{
int hwrev, mode0, mode1;
mode0 = get_adc_value(1); /* HWREV_MODE0 */
mode1 = get_adc_value(2); /* HWREV_MODE1 */
/*
* XXX Always set the default hwrev as the latest board
* ADC = (voltage) / 3.3 * 4096
*/
hwrev = 3;
#define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max))
if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
hwrev = 0x0; /* 0.01V 0.01V */
if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
hwrev = 0x1; /* 610mV 0.01V */
if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
hwrev = 0x2; /* 1.16V 0.01V */
if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
hwrev = 0x3; /* 1.79V 0.01V */
#undef IS_RANGE
debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
return hwrev;
}
static void check_hw_revision(void)
{
int hwrev;
hwrev = get_hw_revision();
board_rev |= hwrev;
}
#ifdef CONFIG_DISPLAY_BOARDINFO
int checkboard(void)
{
puts("Board:\tUniversal C210\n");
return 0;
}
#endif
#ifdef CONFIG_GENERIC_MMC
int board_mmc_init(bd_t *bis)
{
int i, err;
switch (get_hwrev()) {
case 0:
/*
* Set the low to enable LDO_EN
* But when you use the test board for eMMC booting
* you should set it HIGH since it removes the inverter
*/
/* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
gpio_direction_output(&gpio1->e3, 6, 0);
break;
default:
/*
* Default reset state is High and there's no inverter
* But set it as HIGH to ensure
*/
/* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
gpio_direction_output(&gpio1->e1, 3, 1);
break;
}
/*
* eMMC GPIO:
* SDR 8-bit@48MHz at MMC0
* GPK0[0] SD_0_CLK(2)
* GPK0[1] SD_0_CMD(2)
* GPK0[2] SD_0_CDn -> Not used
* GPK0[3:6] SD_0_DATA[0:3](2)
* GPK1[3:6] SD_0_DATA[0:3](3)
*
* DDR 4-bit@26MHz at MMC4
* GPK0[0] SD_4_CLK(3)
* GPK0[1] SD_4_CMD(3)
* GPK0[2] SD_4_CDn -> Not used
* GPK0[3:6] SD_4_DATA[0:3](3)
* GPK1[3:6] SD_4_DATA[4:7](4)
*/
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
/* GPK0[0:6] special function 2 */
gpio_cfg_pin(&gpio2->k0, i, 0x2);
/* GPK0[0:6] pull disable */
gpio_set_pull(&gpio2->k0, i, GPIO_PULL_NONE);
/* GPK0[0:6] drv 4x */
gpio_set_drv(&gpio2->k0, i, GPIO_DRV_4X);
}
for (i = 3; i < 7; i++) {
/* GPK1[3:6] special function 3 */
gpio_cfg_pin(&gpio2->k1, i, 0x3);
/* GPK1[3:6] pull disable */
gpio_set_pull(&gpio2->k1, i, GPIO_PULL_NONE);
/* GPK1[3:6] drv 4x */
gpio_set_drv(&gpio2->k1, i, GPIO_DRV_4X);
}
/* T-flash detect */
gpio_cfg_pin(&gpio2->x3, 4, 0xf);
gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
/*
* MMC device init
* mmc0 : eMMC (8-bit buswidth)
* mmc2 : SD card (4-bit buswidth)
*/
err = s5p_mmc_init(0, 8);
/*
* Check the T-flash detect pin
* GPX3[4] T-flash detect pin
*/
if (!gpio_get_value(&gpio2->x3, 4)) {
/*
* SD card GPIO:
* GPK2[0] SD_2_CLK(2)
* GPK2[1] SD_2_CMD(2)
* GPK2[2] SD_2_CDn -> Not used
* GPK2[3:6] SD_2_DATA[0:3](2)
*/
for (i = 0; i < 7; i++) {
if (i == 2)
continue;
/* GPK2[0:6] special function 2 */
gpio_cfg_pin(&gpio2->k2, i, 0x2);
/* GPK2[0:6] pull disable */
gpio_set_pull(&gpio2->k2, i, GPIO_PULL_NONE);
/* GPK2[0:6] drv 4x */
gpio_set_drv(&gpio2->k2, i, GPIO_DRV_4X);
}
err = s5p_mmc_init(2, 4);
}
return err;
}
#endif
|
