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 >> MMU_PAGE_SHIFT,
  22                 .nr_pages       = CONFIG_SYS_FLASH_SIZE >> MMU_PAGE_SHIFT,
  23                 .phys           = (CONFIG_SYS_FLASH_BASE >> MMU_PAGE_SHIFT)
  24                                         | MMU_VMR_CACHE_NONE,
  25         }, {
  26                 .virt_pgno      = CONFIG_SYS_SDRAM_BASE >> MMU_PAGE_SHIFT,
  27                 .nr_pages       = EBI_SDRAM_SIZE >> MMU_PAGE_SHIFT,
  28                 .phys           = (CONFIG_SYS_SDRAM_BASE >> MMU_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         sdram_init(uncached(EBI_SDRAM_BASE), &sdram_config);
  56
  57         portmux_enable_usart1(PORTMUX_DRIVE_MIN);
  58
  59 #if defined(CONFIG_MACB)
  60         portmux_enable_macb0(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
  61         portmux_enable_macb1(PORTMUX_MACB_MII, PORTMUX_DRIVE_HIGH);
  62 #endif
  63 #if defined(CONFIG_MMC)
  64         portmux_enable_mmci(0, PORTMUX_MMCI_4BIT, PORTMUX_DRIVE_LOW);
  65 #endif
  66 #if defined(CONFIG_ATMEL_SPI)
  67         portmux_enable_spi0(1 << 0, PORTMUX_DRIVE_LOW);
  68 #endif
  69
  70         return 0;
  71 }
  72
  73 int board_early_init_r(void)
  74 {
  75         gd->bd->bi_phy_id[0] = 0x01;
  76         gd->bd->bi_phy_id[1] = 0x03;
  77         return 0;
  78 }
  79
  80 #ifdef CONFIG_CMD_NET
  81 int board_eth_init(bd_t *bi)
  82 {
  83         macb_eth_initialize(0, (void *)ATMEL_BASE_MACB0, bi->bi_phy_id[0]);
  84         macb_eth_initialize(1, (void *)ATMEL_BASE_MACB1, bi->bi_phy_id[1]);
  85         return 0;
  86 }
  87 #endif
  88
  89 /* SPI chip select control */
  90 #ifdef CONFIG_ATMEL_SPI
  91 #include <spi.h>
  92
  93 #define ATNGW100_DATAFLASH_CS_PIN       GPIO_PIN_PA(3)
  94
  95 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
  96 {
  97         return bus == 0 && cs == 0;
  98 }
  99
 100 void spi_cs_activate(struct spi_slave *slave)
 101 {
 102         gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 0);
 103 }
 104
 105 void spi_cs_deactivate(struct spi_slave *slave)
 106 {
 107         gpio_set_value(ATNGW100_DATAFLASH_CS_PIN, 1);
 108 }
 109 #endif /* CONFIG_ATMEL_SPI */