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/*
* Copyright (C) 2011
* Corscience GmbH & Co.KG, Andreas Bießmann <biessmann@corscience.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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 >> MMU_PAGE_SHIFT,
.nr_pages = CONFIG_SYS_FLASH_SIZE >> MMU_PAGE_SHIFT,
.phys = (CONFIG_SYS_FLASH_BASE >> MMU_PAGE_SHIFT)
| MMU_VMR_CACHE_NONE,
}, {
.virt_pgno = CONFIG_SYS_SDRAM_BASE >> MMU_PAGE_SHIFT,
.nr_pages = EBI_SDRAM_SIZE >> MMU_PAGE_SHIFT,
.phys = (CONFIG_SYS_SDRAM_BASE >> MMU_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);
sdram_init(uncached(EBI_SDRAM_BASE), &sdram_config);
portmux_enable_usart0(PORTMUX_DRIVE_MIN);
portmux_enable_usart1(PORTMUX_DRIVE_MIN);
#if defined(CONFIG_MACB)
/* set PHY reset and pwrdown to low */
portmux_select_gpio(PORTMUX_PORT_B, (1 << 29) | (1 << 30),
PORTMUX_DIR_OUTPUT | PORTMUX_INIT_LOW);
udelay(100);
/* release PHYs reset */
gpio_set_value(GPIO_PIN_PB(29), 1);
portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_LOW);
#endif
return 0;
}
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: */
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