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https://github.com/AsahiLinux/u-boot
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110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* Copyright (C) 2008 Atmel Corporation
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*
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* See file CREDITS for list of people who contributed to this project.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <common.h>
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#include <netdev.h>
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#include <asm/io.h>
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#include <asm/sdram.h>
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#include <asm/arch/clk.h>
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#include <asm/arch/hmatrix.h>
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#include <asm/arch/mmu.h>
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#include <asm/arch/portmux.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
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{
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.virt_pgno = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
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.nr_pages = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
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.phys = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
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| MMU_VMR_CACHE_NONE,
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}, {
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.virt_pgno = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
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.nr_pages = EBI_SDRAM_SIZE >> PAGE_SHIFT,
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.phys = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
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| MMU_VMR_CACHE_WRBACK,
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},
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};
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static const struct sdram_config sdram_config = {
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/* MT48LC4M32B2P-6 (16 MB) */
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.data_bits = SDRAM_DATA_32BIT,
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.row_bits = 12,
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.col_bits = 8,
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.bank_bits = 2,
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.cas = 3,
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.twr = 2,
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.trc = 7,
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.trp = 2,
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.trcd = 2,
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.tras = 5,
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.txsr = 5,
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/* 15.6 us */
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.refresh_period = (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
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};
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int board_early_init_f(void)
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{
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/* Enable SDRAM in the EBI mux */
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hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
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portmux_enable_ebi(32, 23, 0, PORTMUX_DRIVE_HIGH);
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portmux_enable_usart3(PORTMUX_DRIVE_MIN);
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#if defined(CONFIG_MACB)
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portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
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#endif
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#if defined(CONFIG_MMC)
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portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
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#endif
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return 0;
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}
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phys_size_t initdram(int board_type)
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{
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unsigned long expected_size;
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unsigned long actual_size;
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void *sdram_base;
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sdram_base = uncached(EBI_SDRAM_BASE);
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expected_size = sdram_init(sdram_base, &sdram_config);
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actual_size = get_ram_size(sdram_base, expected_size);
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if (expected_size != actual_size)
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printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
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actual_size >> 20, expected_size >> 20);
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return actual_size;
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}
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int board_early_init_r(void)
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{
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gd->bd->bi_phy_id[0] = 0x01;
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return 0;
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}
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#if defined(CONFIG_MACB) && defined(CONFIG_CMD_NET)
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int board_eth_init(bd_t *bi)
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{
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return macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0,
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bi->bi_phy_id[0]);
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}
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#endif
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