2 * Copyright (C) 2006 Atmel Corporation
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <asm/sdram.h>
26 #include <asm/arch/clk.h>
27 #include <asm/arch/gpio.h>
28 #include <asm/arch/hmatrix.h>
29 #include <asm/arch/mmu.h>
30 #include <asm/arch/portmux.h>
33 DECLARE_GLOBAL_DATA_PTR;
35 struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
37 .virt_pgno = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
38 .nr_pages = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
39 .phys = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
42 .virt_pgno = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
43 .nr_pages = EBI_SDRAM_SIZE >> PAGE_SHIFT,
44 .phys = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
45 | MMU_VMR_CACHE_WRBACK,
49 static const struct sdram_config sdram_config = {
50 .data_bits = SDRAM_DATA_16BIT,
62 .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
65 int board_early_init_f(void)
67 /* Enable SDRAM in the EBI mux */
68 hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
70 portmux_enable_ebi(16, 23, 0, PORTMUX_DRIVE_HIGH);
71 portmux_enable_usart1(PORTMUX_DRIVE_MIN);
73 #if defined(CONFIG_MACB)
74 portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
75 portmux_enable_macb1(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
77 #if defined(CONFIG_MMC)
78 portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
80 #if defined(CONFIG_ATMEL_SPI)
81 portmux_enable_spi0(1 << 0, PORTMUX_DRIVE_LOW);
87 phys_size_t initdram(int board_type)
89 unsigned long expected_size;
90 unsigned long actual_size;
93 sdram_base = uncached(EBI_SDRAM_BASE);
95 expected_size = sdram_init(sdram_base, &sdram_config);
96 actual_size = get_ram_size(sdram_base, expected_size);
98 if (expected_size != actual_size)
99 printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
100 actual_size >> 20, expected_size >> 20);
105 int board_early_init_r(void)
107 gd->bd->bi_phy_id[0] = 0x01;
108 gd->bd->bi_phy_id[1] = 0x03;
112 #ifdef CONFIG_CMD_NET
113 int board_eth_init(bd_t *bi)
115 macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
116 macb_eth_initialize(1, (void *)ATMEL_BASE_MACB1, bi->bi_phy_id[1]);
121 /* SPI chip select control */
122 #ifdef CONFIG_ATMEL_SPI
125 #define ATNGW100_DATAFLASH_CS_PIN GPIO_PIN_PA(3)
127 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
129 return bus == 0 && cs == 0;
132 void spi_cs_activate(struct spi_slave *slave)
134 gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 0);
137 void spi_cs_deactivate(struct spi_slave *slave)
139 gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 1);
141 #endif /* CONFIG_ATMEL_SPI */