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
|
/*
* Board functions for Siemens TAURUS (AT91SAM9G20) based boards
* (C) Copyright Siemens AG
*
* Based on:
* U-Boot file: board/atmel/at91sam9260ek/at91sam9260ek.c
*
* (C) Copyright 2007-2008
* Stelian Pop <stelian@popies.net>
* Lead Tech Design <www.leadtechdesign.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/at91sam9260_matrix.h>
#include <asm/arch/at91sam9_smc.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/at91sam9_sdramc.h>
#include <asm/arch/clk.h>
#include <linux/mtd/nand.h>
#include <atmel_mci.h>
#include <asm/arch/at91_spi.h>
#include <spi.h>
#include <net.h>
#include <netdev.h>
DECLARE_GLOBAL_DATA_PTR;
static void taurus_nand_hw_init(void)
{
struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
unsigned long csa;
/* Assign CS3 to NAND/SmartMedia Interface */
csa = readl(&matrix->ebicsa);
csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
writel(csa, &matrix->ebicsa);
/* Configure SMC CS3 for NAND/SmartMedia */
writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
&smc->cs[3].setup);
writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(3) |
AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(3),
&smc->cs[3].pulse);
writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
&smc->cs[3].cycle);
writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
AT91_SMC_MODE_EXNW_DISABLE |
AT91_SMC_MODE_DBW_8 |
AT91_SMC_MODE_TDF_CYCLE(3),
&smc->cs[3].mode);
/* Configure RDY/BSY */
at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
/* Enable NandFlash */
at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
}
#if defined(CONFIG_SPL_BUILD)
#include <spl.h>
#include <nand.h>
void matrix_init(void)
{
struct at91_matrix *mat = (struct at91_matrix *)ATMEL_BASE_MATRIX;
writel((readl(&mat->scfg[3]) & (~AT91_MATRIX_SLOT_CYCLE))
| AT91_MATRIX_SLOT_CYCLE_(0x40),
&mat->scfg[3]);
}
void at91_spl_board_init(void)
{
taurus_nand_hw_init();
/* Configure recovery button PINs */
at91_set_gpio_input(AT91_PIN_PA31, 1);
/* check if button is pressed */
if (at91_get_gpio_value(AT91_PIN_PA31) == 0) {
u32 boot_device;
debug("Recovery button pressed\n");
boot_device = spl_boot_device();
switch (boot_device) {
#ifdef CONFIG_SPL_NAND_SUPPORT
case BOOT_DEVICE_NAND:
nand_init();
spl_nand_erase_one(0, 0);
break;
#endif
}
}
}
void mem_init(void)
{
struct at91_matrix *ma = (struct at91_matrix *)ATMEL_BASE_MATRIX;
struct sdramc_reg setting;
at91_sdram_hw_init();
setting.cr = (AT91_SDRAMC_NC_9 |
AT91_SDRAMC_NR_13 |
AT91_SDRAMC_CAS_3 |
AT91_SDRAMC_NB_4 |
AT91_SDRAMC_DBW_32 |
AT91_SDRAMC_TWR_VAL(3) |
AT91_SDRAMC_TRC_VAL(9) |
AT91_SDRAMC_TRP_VAL(3) |
AT91_SDRAMC_TRCD_VAL(3) |
AT91_SDRAMC_TRAS_VAL(6) |
AT91_SDRAMC_TXSR_VAL(10));
setting.mdr = AT91_SDRAMC_MD_SDRAM;
setting.tr = (CONFIG_SYS_MASTER_CLOCK * 7) / 1000000;
writel(readl(&ma->ebicsa) | AT91_MATRIX_CS1A_SDRAMC |
AT91_MATRIX_VDDIOMSEL_3_3V | AT91_MATRIX_EBI_IOSR_SEL,
&ma->ebicsa);
sdramc_initialize(ATMEL_BASE_CS1, &setting);
}
#endif
#ifdef CONFIG_MACB
static void taurus_macb_hw_init(void)
{
/* Enable EMAC clock */
at91_periph_clk_enable(ATMEL_ID_EMAC0);
/*
* Disable pull-up on:
* RXDV (PA17) => PHY normal mode (not Test mode)
* ERX0 (PA14) => PHY ADDR0
* ERX1 (PA15) => PHY ADDR1
* ERX2 (PA25) => PHY ADDR2
* ERX3 (PA26) => PHY ADDR3
* ECRS (PA28) => PHY ADDR4 => PHYADDR = 0x0
*
* PHY has internal pull-down
*/
at91_set_pio_pullup(AT91_PIO_PORTA, 14, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 17, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 25, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 26, 0);
at91_set_pio_pullup(AT91_PIO_PORTA, 28, 0);
at91_phy_reset();
at91_set_gpio_input(AT91_PIN_PA25, 1); /* ERST tri-state */
/* Re-enable pull-up */
at91_set_pio_pullup(AT91_PIO_PORTA, 14, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 17, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 25, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 26, 1);
at91_set_pio_pullup(AT91_PIO_PORTA, 28, 1);
/* Initialize EMAC=MACB hardware */
at91_macb_hw_init();
}
#endif
#ifdef CONFIG_GENERIC_ATMEL_MCI
int board_mmc_init(bd_t *bd)
{
at91_mci_hw_init();
return atmel_mci_init((void *)ATMEL_BASE_MCI);
}
#endif
int board_early_init_f(void)
{
/* Enable clocks for all PIOs */
at91_periph_clk_enable(ATMEL_ID_PIOA);
at91_periph_clk_enable(ATMEL_ID_PIOB);
at91_periph_clk_enable(ATMEL_ID_PIOC);
at91_seriald_hw_init();
return 0;
}
int spi_cs_is_valid(unsigned int bus, unsigned int cs)
{
return bus == 0 && cs == 0;
}
void spi_cs_activate(struct spi_slave *slave)
{
at91_set_gpio_value(TAURUS_SPI_CS_PIN, 0);
}
void spi_cs_deactivate(struct spi_slave *slave)
{
at91_set_gpio_value(TAURUS_SPI_CS_PIN, 1);
}
int board_init(void)
{
/* adress of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
#ifdef CONFIG_CMD_NAND
taurus_nand_hw_init();
#endif
#ifdef CONFIG_MACB
taurus_macb_hw_init();
#endif
at91_spi0_hw_init(TAURUS_SPI_MASK);
return 0;
}
int dram_init(void)
{
gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
CONFIG_SYS_SDRAM_SIZE);
return 0;
}
int board_eth_init(bd_t *bis)
{
int rc = 0;
#ifdef CONFIG_MACB
rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
#endif
return rc;
}
|
