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/*
* Copyright (C) 2008 Miromico AG
*
* Mostly copied form atmel ATNGW100 sources
*
* 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 <netdev.h>
#include <asm/io.h>
#include <asm/sdram.h>
#include <asm/arch/clk.h>
#include <asm/arch/hmatrix.h>
#include <asm/arch/hardware.h>
#include <asm/arch/mmu.h>
#include <asm/arch/portmux.h>
DECLARE_GLOBAL_DATA_PTR;
struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
{
.virt_pgno = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
.nr_pages = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
.phys = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
| MMU_VMR_CACHE_NONE,
}, {
.virt_pgno = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
.nr_pages = EBI_SDRAM_SIZE >> PAGE_SHIFT,
.phys = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
| MMU_VMR_CACHE_WRBACK,
},
};
static const struct sdram_config sdram_config = {
.data_bits = SDRAM_DATA_32BIT,
.row_bits = 13,
.col_bits = 9,
.bank_bits = 2,
.cas = 3,
.twr = 2,
.trc = 7,
.trp = 2,
.trcd = 2,
.tras = 5,
.txsr = 5,
/* 7.81 us */
.refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
};
#ifdef CONFIG_CMD_NET
int board_eth_init(bd_t *bis)
{
return macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0,
bis->bi_phy_id[0]);
}
#endif
int board_early_init_f(void)
{
/* Enable SDRAM in the EBI mux */
hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
portmux_enable_ebi(32, 23, 0, PORTMUX_DRIVE_HIGH);
portmux_enable_usart1(PORTMUX_DRIVE_MIN);
#if defined(CONFIG_MACB)
portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
#endif
#if defined(CONFIG_MMC)
portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
#endif
return 0;
}
phys_size_t initdram(int board_type)
{
unsigned long expected_size;
unsigned long actual_size;
void *sdram_base;
sdram_base = uncached(EBI_SDRAM_BASE);
expected_size = sdram_init(sdram_base, &sdram_config);
actual_size = get_ram_size(sdram_base, expected_size);
if (expected_size != actual_size)
printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
actual_size >> 20, expected_size >> 20);
return actual_size;
}
int board_early_init_r(void)
{
gd->bd->bi_phy_id[0] = 0x01;
return 0;
}
int board_postclk_init(void)
{
/* Hammerhead boards uses GCLK3 as 25MHz output to ethernet PHY */
gclk_enable_output(3, PORTMUX_DRIVE_LOW);
gclk_set_rate(3, GCLK_PARENT_OSC0, 25000000);
return 0;
}
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