LXR uboot/board/bluewater/snapper9260/snapper9260.c

   1/*
   2 * Bluewater Systems Snapper 9260/9G20 modules
   3 *
   4 * (C) Copyright 2011 Bluewater Systems
   5 *   Author: Andre Renaud <andre@bluewatersys.com>
   6 *   Author: Ryan Mallon <ryan@bluewatersys.com>
   7 *
   8 * SPDX-License-Identifier:     GPL-2.0+
   9 */
  10
  11#include <common.h>
  12#include <dm.h>
  13#include <asm/io.h>
  14#include <asm/gpio.h>
  15#include <asm/arch/at91sam9260_matrix.h>
  16#include <asm/arch/at91sam9_smc.h>
  17#include <asm/arch/at91_common.h>
  18#include <asm/arch/clk.h>
  19#include <asm/arch/gpio.h>
  20#include <asm/arch/atmel_serial.h>
  21#include <net.h>
  22#include <netdev.h>
  23#include <i2c.h>
  24#include <pca953x.h>
  25
  26DECLARE_GLOBAL_DATA_PTR;
  27
  28/* IO Expander pins */
  29#define IO_EXP_ETH_RESET        (0 << 1)
  30#define IO_EXP_ETH_POWER        (1 << 1)
  31
  32static void macb_hw_init(void)
  33{
  34        struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
  35
  36        at91_periph_clk_enable(ATMEL_ID_EMAC0);
  37
  38        /* Disable pull-ups to prevent PHY going into test mode */
  39        writel(pin_to_mask(AT91_PIN_PA14) |
  40               pin_to_mask(AT91_PIN_PA15) |
  41               pin_to_mask(AT91_PIN_PA18),
  42               &pioa->pudr);
  43
  44        /* Power down ethernet */
  45        pca953x_set_dir(0x28, IO_EXP_ETH_POWER, PCA953X_DIR_OUT);
  46        pca953x_set_val(0x28, IO_EXP_ETH_POWER, 1);
  47
  48        /* Hold ethernet in reset */
  49        pca953x_set_dir(0x28, IO_EXP_ETH_RESET, PCA953X_DIR_OUT);
  50        pca953x_set_val(0x28, IO_EXP_ETH_RESET, 0);
  51
  52        /* Enable ethernet power */
  53        pca953x_set_val(0x28, IO_EXP_ETH_POWER, 0);
  54
  55        at91_phy_reset();
  56
  57        /* Bring the ethernet out of reset */
  58        pca953x_set_val(0x28, IO_EXP_ETH_RESET, 1);
  59
  60        /* The phy internal reset take 21ms */
  61        udelay(21 * 1000);
  62
  63        /* Re-enable pull-up */
  64        writel(pin_to_mask(AT91_PIN_PA14) |
  65               pin_to_mask(AT91_PIN_PA15) |
  66               pin_to_mask(AT91_PIN_PA18),
  67               &pioa->puer);
  68
  69        at91_macb_hw_init();
  70}
  71
  72static void nand_hw_init(void)
  73{
  74        struct at91_smc *smc       = (struct at91_smc    *)ATMEL_BASE_SMC;
  75        struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
  76        unsigned long csa;
  77
  78        /* Enable CS3 as NAND/SmartMedia */
  79        csa = readl(&matrix->ebicsa);
  80        csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
  81        writel(csa, &matrix->ebicsa);
  82
  83        /* Configure SMC CS3 for NAND/SmartMedia */
  84        writel(AT91_SMC_SETUP_NWE(2) | AT91_SMC_SETUP_NCS_WR(0) |
  85               AT91_SMC_SETUP_NRD(2) | AT91_SMC_SETUP_NCS_RD(0),
  86               &smc->cs[3].setup);
  87        writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(4) |
  88               AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(4),
  89               &smc->cs[3].pulse);
  90        writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(7),
  91               &smc->cs[3].cycle);
  92        writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
  93               AT91_SMC_MODE_EXNW_DISABLE |
  94               AT91_SMC_MODE_DBW_8 |
  95               AT91_SMC_MODE_TDF_CYCLE(3),
  96               &smc->cs[3].mode);
  97
  98        /* Configure RDY/BSY */
  99        gpio_request(CONFIG_SYS_NAND_READY_PIN, "nand_rdy");
 100        gpio_direction_input(CONFIG_SYS_NAND_READY_PIN);
 101
 102        /* Enable NandFlash */
 103        gpio_request(CONFIG_SYS_NAND_ENABLE_PIN, "nand_ce");
 104        gpio_direction_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
 105}
 106
 107int board_init(void)
 108{
 109        at91_periph_clk_enable(ATMEL_ID_PIOA);
 110        at91_periph_clk_enable(ATMEL_ID_PIOB);
 111        at91_periph_clk_enable(ATMEL_ID_PIOC);
 112
 113        /* The mach-type is the same for both Snapper 9260 and 9G20 */
 114        gd->bd->bi_arch_number = MACH_TYPE_SNAPPER_9260;
 115
 116        /* Address of boot parameters */
 117        gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 118
 119        /* Initialise peripherals */
 120        at91_seriald_hw_init();
 121        i2c_set_bus_num(0);
 122        nand_hw_init();
 123        macb_hw_init();
 124
 125        return 0;
 126}
 127
 128int board_eth_init(bd_t *bis)
 129{
 130        return macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x1f);
 131}
 132
 133int dram_init(void)
 134{
 135        gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
 136                                    CONFIG_SYS_SDRAM_SIZE);
 137        return 0;
 138}
 139
 140void reset_phy(void)
 141{
 142}
 143
 144static struct atmel_serial_platdata at91sam9260_serial_plat = {
 145        .base_addr = ATMEL_BASE_DBGU,
 146};
 147
 148U_BOOT_DEVICE(at91sam9260_serial) = {
 149        .name   = "serial_atmel",
 150        .platdata = &at91sam9260_serial_plat,
 151};
 152