2 * (C) Copyright 2007-2008
3 * Stelian Pop <stelian@popies.net>
4 * Lead Tech Design <www.leadtechdesign.com>
7 * Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
35 #include <asm/arch/hardware.h>
36 #include <asm/arch/at91sam9260_matrix.h>
37 #include <asm/arch/at91sam9_smc.h>
38 #include <asm/arch/at91_common.h>
39 #include <asm/arch/at91_pmc.h>
40 #include <asm/arch/at91_rstc.h>
41 #include <asm/arch/at91_shdwn.h>
42 #include <asm/arch/gpio.h>
44 DECLARE_GLOBAL_DATA_PTR;
46 #ifdef CONFIG_CMD_NAND
47 static void nand_hw_init(void)
49 struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
50 struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
53 /* Assign CS3 to NAND/SmartMedia Interface */
54 csa = readl(&matrix->ebicsa);
55 csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
56 writel(csa, &matrix->ebicsa);
58 /* Configure SMC CS3 for NAND/SmartMedia */
59 writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
60 AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
62 writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
63 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
65 writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
67 writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
68 AT91_SMC_MODE_EXNW_DISABLE |
70 AT91_SMC_MODE_TDF_CYCLE(2),
73 /* Configure RDY/BSY */
74 at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
76 /* Enable NandFlash */
77 at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
82 static void macb_hw_init(void)
84 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
86 /* Enable EMAC clock */
87 writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
89 /* Initialize EMAC=MACB hardware */
94 #ifdef CONFIG_GENERIC_ATMEL_MCI
95 /* this is a weak define that we are overriding */
96 int board_mmc_init(bd_t *bd)
98 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
100 /* Enable MCI clock */
101 writel(1 << ATMEL_ID_MCI, &pmc->pcer);
103 /* Initialize MCI hardware */
106 /* This calls the atmel_mmc_init in gen_atmel_mci.c */
107 return atmel_mci_init((void *)ATMEL_BASE_MCI);
110 /* this is a weak define that we are overriding */
111 int board_mmc_getcd(struct mmc *mmc)
113 return !at91_get_gpio_value(CONFIG_SYS_MMC_CD_PIN);
118 int board_early_init_f(void)
120 struct at91_shdwn *shdwn = (struct at91_shdwn *)ATMEL_BASE_SHDWN;
121 struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
124 * make sure the board can be powered on by
125 * any transition on WKUP
127 writel(AT91_SHDW_MR_WKMODE0H2L | AT91_SHDW_MR_WKMODE0L2H,
130 /* Enable clocks for all PIOs */
131 writel((1 << ATMEL_ID_PIOA) | (1 << ATMEL_ID_PIOB) |
132 (1 << ATMEL_ID_PIOC),
135 /* set SCL0 and SDA0 to open drain */
136 at91_set_pio_output(I2C0_PORT, SCL0_PIN, 1);
137 at91_set_pio_multi_drive(I2C0_PORT, SCL0_PIN, 1);
138 at91_set_pio_pullup(I2C0_PORT, SCL0_PIN, 1);
139 at91_set_pio_output(I2C0_PORT, SDA0_PIN, 1);
140 at91_set_pio_multi_drive(I2C0_PORT, SDA0_PIN, 1);
141 at91_set_pio_pullup(I2C0_PORT, SDA0_PIN, 1);
143 /* set SCL1 and SDA1 to open drain */
144 at91_set_pio_output(I2C1_PORT, SCL1_PIN, 1);
145 at91_set_pio_multi_drive(I2C1_PORT, SCL1_PIN, 1);
146 at91_set_pio_pullup(I2C1_PORT, SCL1_PIN, 1);
147 at91_set_pio_output(I2C1_PORT, SDA1_PIN, 1);
148 at91_set_pio_multi_drive(I2C1_PORT, SDA1_PIN, 1);
149 at91_set_pio_pullup(I2C1_PORT, SDA1_PIN, 1);
155 /* arch number of TOP9000 Board */
156 gd->bd->bi_arch_number = MACH_TYPE_TOP9000;
157 /* adress of boot parameters */
158 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
160 at91_seriald_hw_init();
161 #ifdef CONFIG_CMD_NAND
167 #ifdef CONFIG_ATMEL_SPI0
168 /* (n+4) denotes to use nSPISEL(0) in GPIO mode! */
169 at91_spi0_hw_init(1 << (FRAM_CS_NUM + 4));
171 #ifdef CONFIG_ATMEL_SPI1
172 at91_spi1_hw_init(1 << (ENC_CS_NUM + 4));
177 #ifdef CONFIG_MISC_INIT_R
178 int misc_init_r(void)
180 /* read 'factory' part of EEPROM */
188 gd->ram_size = get_ram_size(
189 (void *)CONFIG_SYS_SDRAM_BASE,
190 CONFIG_SYS_SDRAM_SIZE);
194 #ifdef CONFIG_RESET_PHY_R
198 * Initialize ethernet HW addresses prior to starting Linux,
199 * needed for nfsroot.
200 * TODO: We need to investigate if that is really necessary.
206 int board_eth_init(bd_t *bis)
211 rc = macb_eth_initialize(0,
212 (void *)ATMEL_BASE_EMAC0,
217 #ifdef CONFIG_ENC28J60
218 rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM,
219 ENC_SPI_CLOCK, SPI_MODE_0);
222 # ifdef CONFIG_ENC28J60_2
223 rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+1,
224 ENC_SPI_CLOCK, SPI_MODE_0);
227 # ifdef CONFIG_ENC28J60_3
228 rc = enc28j60_initialize(ENC_SPI_BUS, ENC_CS_NUM+2,
229 ENC_SPI_CLOCK, SPI_MODE_0);
239 * I2C access functions
242 * We need to access Bus 0 before relocation to access the
243 * environment settings.
244 * However i2c_get_bus_num() cannot be called before
247 #ifdef CONFIG_SOFT_I2C
250 /* ports are now initialized in board_early_init_f() */
255 switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
257 return at91_get_pio_value(I2C0_PORT, SDA0_PIN);
259 return at91_get_pio_value(I2C1_PORT, SDA1_PIN);
264 void iic_sda(int bit)
266 switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
268 at91_set_pio_value(I2C0_PORT, SDA0_PIN, bit);
271 at91_set_pio_value(I2C1_PORT, SDA1_PIN, bit);
276 void iic_scl(int bit)
278 switch ((gd->flags & GD_FLG_RELOC) ? i2c_get_bus_num() : 0) {
280 at91_set_pio_value(I2C0_PORT, SCL0_PIN, bit);
283 at91_set_pio_value(I2C1_PORT, SCL1_PIN, bit);