mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
ad7a1785f7
The grasshopper board is a neat avr32 evaluation kit produced by In-Circuit GmbH. See http://www.ic-board.de/product_info.php?info=p75_ICnova-AP7000-Base.html for detailed information about this device. Signed-off-by: Andreas Bießmann <biessmann@corscience.de> Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2011
|
|
* Corscience GmbH & Co.KG, Andreas Bießmann <biessmann@corscience.de>
|
|
*
|
|
* 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 <asm/io.h>
|
|
#include <asm/sdram.h>
|
|
#include <asm/arch/clk.h>
|
|
#include <asm/arch/hmatrix.h>
|
|
#include <asm/arch/mmu.h>
|
|
#include <asm/arch/portmux.h>
|
|
#include <netdev.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 = {
|
|
/* Dual MT48LC16M16A2-7E (or equal) */
|
|
.data_bits = SDRAM_DATA_32BIT,
|
|
.row_bits = 13,
|
|
.col_bits = 9,
|
|
.bank_bits = 2,
|
|
.cas = 2,
|
|
.twr = 2,
|
|
.trc = 7,
|
|
.trp = 2,
|
|
.trcd = 2,
|
|
.tras = 4,
|
|
.txsr = 7,
|
|
/* 7.81 us */
|
|
.refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
|
|
};
|
|
|
|
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(SDRAM_DATA_32BIT, 23, 0, PORTMUX_DRIVE_HIGH);
|
|
portmux_enable_usart0(PORTMUX_DRIVE_MIN);
|
|
portmux_enable_usart1(PORTMUX_DRIVE_MIN);
|
|
#if defined(CONFIG_MACB)
|
|
portmux_enable_macb0(PORTMUX_MACB_MII, 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] = 0x00;
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_CMD_NET
|
|
int board_eth_init(bd_t *bi)
|
|
{
|
|
macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
|
|
return 0;
|
|
}
|
|
#endif
|
|
/* vim: set noet ts=8: */
|