board/atmel/atngw100/atngw100.c

   1 /*
   2  * Copyright (C) 2006 Atmel Corporation
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7
   8 #include <asm/io.h>
   9 #include <asm/sdram.h>
  10 #include <asm/arch/clk.h>
  11 #include <asm/arch/gpio.h>
  12 #include <asm/arch/hmatrix.h>
  13 #include <asm/arch/mmu.h>
  14 #include <asm/arch/portmux.h>
  15 #include <netdev.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
  20         {
  21                 .virt_pgno      = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
  22                 .nr_pages       = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
  23                 .phys           = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
  24                                         | MMU_VMR_CACHE_NONE,
  25         }, {
  26                 .virt_pgno      = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
  27                 .nr_pages       = EBI_SDRAM_SIZE >> PAGE_SHIFT,
  28                 .phys           = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
  29                                         | MMU_VMR_CACHE_WRBACK,
  30         },
  31 };
  32
  33 static const struct sdram_config sdram_config = {
  34         .data_bits      = SDRAM_DATA_16BIT,
  35         .row_bits       = 13,
  36         .col_bits       = 9,
  37         .bank_bits      = 2,
  38         .cas            = 3,
  39         .twr            = 2,
  40         .trc            = 7,
  41         .trp            = 2,
  42         .trcd           = 2,
  43         .tras           = 5,
  44         .txsr           = 5,
  45         /* 7.81 us */
  46         .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
  47 };
  48
  49 int board_early_init_f(void)
  50 {
  51         /* Enable SDRAM in the EBI mux */
  52         hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
  53
  54         portmux_enable_ebi(16, 23, 0, PORTMUX_DRIVE_HIGH);
  55         portmux_enable_usart1(PORTMUX_DRIVE_MIN);
  56
  57 #if defined(CONFIG_MACB)
  58         portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
  59         portmux_enable_macb1(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
  60 #endif
  61 #if defined(CONFIG_MMC)
  62         portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
  63 #endif
  64 #if defined(CONFIG_ATMEL_SPI)
  65         portmux_enable_spi0(1 << 0, PORTMUX_DRIVE_LOW);
  66 #endif
  67
  68         return 0;
  69 }
  70
  71 phys_size_t initdram(int board_type)
  72 {
  73         unsigned long expected_size;
  74         unsigned long actual_size;
  75         void *sdram_base;
  76
  77         sdram_base = uncached(EBI_SDRAM_BASE);
  78
  79         expected_size = sdram_init(sdram_base, &sdram_config);
  80         actual_size = get_ram_size(sdram_base, expected_size);
  81
  82         if (expected_size != actual_size)
  83                 printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
  84                                 actual_size >> 20, expected_size >> 20);
  85
  86         return actual_size;
  87 }
  88
  89 int board_early_init_r(void)
  90 {
  91         gd->bd->bi_phy_id[0] = 0x01;
  92         gd->bd->bi_phy_id[1] = 0x03;
  93         return 0;
  94 }
  95
  96 #ifdef CONFIG_CMD_NET
  97 int board_eth_init(bd_t *bi)
  98 {
  99         macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
 100         macb_eth_initialize(1, (void *)ATMEL_BASE_MACB1, bi->bi_phy_id[1]);
 101         return 0;
 102 }
 103 #endif
 104
 105 /* SPI chip select control */
 106 #ifdef CONFIG_ATMEL_SPI
 107 #include <spi.h>
 108
 109 #define ATNGW100_DATAFLASH_CS_PIN       GPIO_PIN_PA(3)
 110
 111 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 112 {
 113         return bus == 0 && cs == 0;
 114 }
 115
 116 void spi_cs_activate(struct spi_slave *slave)
 117 {
 118         gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 0);
 119 }
 120
 121 void spi_cs_deactivate(struct spi_slave *slave)
 122 {
 123         gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 1);
 124 }
 125 #endif /* CONFIG_ATMEL_SPI */