LXR uboot/board/atmel/atngw100mkii/atngw100mkii.c

   1/*
   2 * Copyright (C) 2010 Atmel Corporation
   3 *
   4 * Copyright (C) 2012 Andreas Bießmann <andreas.devel@googlemail.com>
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8#include <common.h>
   9
  10#include <spi.h>
  11#include <netdev.h>
  12
  13#include <asm/io.h>
  14#include <asm/sdram.h>
  15#include <asm/arch/clk.h>
  16#include <asm/arch/gpio.h>
  17#include <asm/arch/hmatrix.h>
  18#include <asm/arch/mmu.h>
  19#include <asm/arch/portmux.h>
  20
  21DECLARE_GLOBAL_DATA_PTR;
  22
  23struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
  24        {
  25                /* Atmel AT49BV640D 8 MiB x16 NOR flash on NCS0 */
  26                .virt_pgno      = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
  27                .nr_pages       = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
  28                .phys           = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
  29                                        | MMU_VMR_CACHE_NONE,
  30        }, {
  31                /* Micron MT29F2G16AAD 256 MiB x16 NAND flash on NCS3 */
  32                .virt_pgno      = EBI_SRAM_CS3_BASE >> PAGE_SHIFT,
  33                .nr_pages       = EBI_SRAM_CS3_SIZE >> PAGE_SHIFT,
  34                .phys           = (EBI_SRAM_CS3_BASE >> PAGE_SHIFT)
  35                                        | MMU_VMR_CACHE_NONE,
  36        }, {
  37                /* 2x16-bit ISSI IS42S16320B 64 MiB SDRAM (128 MiB total) */
  38                .virt_pgno      = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
  39                .nr_pages       = EBI_SDRAM_SIZE >> PAGE_SHIFT,
  40                .phys           = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
  41                                        | MMU_VMR_CACHE_WRBACK,
  42        },
  43};
  44
  45static const struct sdram_config sdram_config = {
  46        .data_bits      = SDRAM_DATA_32BIT,
  47        .row_bits       = 13,
  48        .col_bits       = 10,
  49        .bank_bits      = 2,
  50        .cas            = 3,
  51        .twr            = 2,
  52        .trc            = 7,
  53        .trp            = 2,
  54        .trcd           = 2,
  55        .tras           = 5,
  56        .txsr           = 6,
  57        /* 7.81 us */
  58        .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
  59};
  60
  61int board_early_init_f(void)
  62{
  63        /* Enable SDRAM in the EBI mux */
  64        hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE)
  65                        | HMATRIX_BIT(EBI_NAND_ENABLE));
  66
  67        portmux_enable_ebi(32, 23, PORTMUX_EBI_NAND,
  68                        PORTMUX_DRIVE_HIGH);
  69        portmux_select_gpio(PORTMUX_PORT_E, 1 << 23,
  70                        PORTMUX_DIR_OUTPUT | PORTMUX_INIT_HIGH
  71                        | PORTMUX_DRIVE_MIN);
  72        portmux_enable_usart1(PORTMUX_DRIVE_MIN);
  73
  74#if defined(CONFIG_MACB)
  75        portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
  76        portmux_enable_macb1(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
  77#endif
  78#if defined(CONFIG_MMC)
  79        portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
  80#endif
  81#if defined(CONFIG_ATMEL_SPI)
  82        portmux_enable_spi0(1 << 0, PORTMUX_DRIVE_LOW);
  83#endif
  84
  85        return 0;
  86}
  87
  88phys_size_t initdram(int board_type)
  89{
  90        unsigned long expected_size;
  91        unsigned long actual_size;
  92        void *sdram_base;
  93
  94        sdram_base = uncached(EBI_SDRAM_BASE);
  95
  96        expected_size = sdram_init(sdram_base, &sdram_config);
  97        actual_size = get_ram_size(sdram_base, expected_size);
  98
  99        if (expected_size != actual_size)
 100                printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 101                                actual_size >> 20, expected_size >> 20);
 102
 103        return actual_size;
 104}
 105
 106int board_early_init_r(void)
 107{
 108        gd->bd->bi_phy_id[0] = 0x01;
 109        gd->bd->bi_phy_id[1] = 0x03;
 110        return 0;
 111}
 112
 113#ifdef CONFIG_CMD_NET
 114int board_eth_init(bd_t *bi)
 115{
 116        macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
 117        macb_eth_initialize(1, (void *)ATMEL_BASE_MACB1, bi->bi_phy_id[1]);
 118        return 0;
 119}
 120#endif
 121
 122/* SPI chip select control */
 123#ifdef CONFIG_ATMEL_SPI
 124#define ATNGW100_DATAFLASH_CS_PIN       GPIO_PIN_PA(3)
 125
 126int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 127{
 128        return bus == 0 && cs == 0;
 129}
 130
 131void spi_cs_activate(struct spi_slave *slave)
 132{
 133        gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 0);
 134}
 135
 136void spi_cs_deactivate(struct spi_slave *slave)
 137{
 138        gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 1);
 139}
 140#endif /* CONFIG_ATMEL_SPI */
 141