board/atmel/atstk1000/atstk1000.c

   1 /*
   2  * Copyright (C) 2005-2006 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/hmatrix.h>
  12 #include <asm/arch/mmu.h>
  13 #include <asm/arch/portmux.h>
  14 #include <netdev.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 struct mmu_vm_range mmu_vmr_table[CONFIG_SYS_NR_VM_REGIONS] = {
  19         {
  20                 .virt_pgno      = CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT,
  21                 .nr_pages       = CONFIG_SYS_FLASH_SIZE >> PAGE_SHIFT,
  22                 .phys           = (CONFIG_SYS_FLASH_BASE >> PAGE_SHIFT)
  23                                         | MMU_VMR_CACHE_NONE,
  24         }, {
  25                 .virt_pgno      = CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT,
  26                 .nr_pages       = EBI_SDRAM_SIZE >> PAGE_SHIFT,
  27                 .phys           = (CONFIG_SYS_SDRAM_BASE >> PAGE_SHIFT)
  28                                         | MMU_VMR_CACHE_WRBACK,
  29         },
  30 };
  31
  32 static const struct sdram_config sdram_config = {
  33 #if defined(CONFIG_ATSTK1006)
  34         /* Dual MT48LC16M16A2-7E (64 MB) on daughterboard */
  35         .data_bits      = SDRAM_DATA_32BIT,
  36         .row_bits       = 13,
  37         .col_bits       = 9,
  38         .bank_bits      = 2,
  39         .cas            = 2,
  40         .twr            = 2,
  41         .trc            = 7,
  42         .trp            = 2,
  43         .trcd           = 2,
  44         .tras           = 4,
  45         .txsr           = 7,
  46         /* 7.81 us */
  47         .refresh_period = (781 * (SDRAMC_BUS_HZ / 1000)) / 100000,
  48 #else
  49         /* MT48LC2M32B2P-5 (8 MB) on motherboard */
  50 #ifdef CONFIG_ATSTK1004
  51         .data_bits      = SDRAM_DATA_16BIT,
  52 #else
  53         .data_bits      = SDRAM_DATA_32BIT,
  54 #endif
  55 #ifdef CONFIG_ATSTK1000_16MB_SDRAM
  56         /* MT48LC4M32B2P-6 (16 MB) on mod'ed motherboard */
  57         .row_bits       = 12,
  58 #else
  59         .row_bits       = 11,
  60 #endif
  61         .col_bits       = 8,
  62         .bank_bits      = 2,
  63         .cas            = 3,
  64         .twr            = 2,
  65         .trc            = 7,
  66         .trp            = 2,
  67         .trcd           = 2,
  68         .tras           = 5,
  69         .txsr           = 5,
  70         /* 15.6 us */
  71         .refresh_period = (156 * (SDRAMC_BUS_HZ / 1000)) / 10000,
  72 #endif
  73 };
  74
  75 int board_early_init_f(void)
  76 {
  77         /* Enable SDRAM in the EBI mux */
  78         hmatrix_slave_write(EBI, SFR, HMATRIX_BIT(EBI_SDRAM_ENABLE));
  79
  80         portmux_enable_ebi(sdram_config.data_bits, 23, 0, PORTMUX_DRIVE_HIGH);
  81         portmux_enable_usart1(PORTMUX_DRIVE_MIN);
  82 #if defined(CONFIG_MACB)
  83         portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_LOW);
  84         portmux_enable_macb1(PORTMUX_MACB_MII, PORTMUX_DRIVE_LOW);
  85 #endif
  86 #if defined(CONFIG_MMC)
  87         portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
  88 #endif
  89
  90         return 0;
  91 }
  92
  93 phys_size_t initdram(int board_type)
  94 {
  95         unsigned long expected_size;
  96         unsigned long actual_size;
  97         void *sdram_base;
  98
  99         sdram_base = uncached(EBI_SDRAM_BASE);
 100
 101         expected_size = sdram_init(sdram_base, &sdram_config);
 102         actual_size = get_ram_size(sdram_base, expected_size);
 103
 104         if (expected_size != actual_size)
 105                 printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 106                                 actual_size >> 20, expected_size >> 20);
 107
 108         return actual_size;
 109 }
 110
 111 int board_early_init_r(void)
 112 {
 113         gd->bd->bi_phy_id[0] = 0x10;
 114         gd->bd->bi_phy_id[1] = 0x11;
 115         return 0;
 116 }
 117
 118 #ifdef CONFIG_CMD_NET
 119 int board_eth_init(bd_t *bi)
 120 {
 121         macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
 122         macb_eth_initialize(1, (void *)ATMEL_BASE_MACB1, bi->bi_phy_id[1]);
 123         return 0;
 124 }
 125 #endif