board/afeb9260/afeb9260.c

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stelian Pop <stelian@popies.net>
   4  * Lead Tech Design <www.leadtechdesign.com>
   5  * (C) Copyright 2008 Sergey Lapin <slapin@ossfans.org>
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <asm/arch/at91sam9260.h>
  28 #include <asm/arch/at91sam9260_matrix.h>
  29 #include <asm/arch/at91sam9_smc.h>
  30 #include <asm/arch/at91_common.h>
  31 #include <asm/arch/at91_pmc.h>
  32 #include <asm/arch/at91_rstc.h>
  33 #include <asm/arch/gpio.h>
  34 #include <asm/io.h>
  35 #include <asm/arch/hardware.h>
  36 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
  37 #include <netdev.h>
  38 #include <net.h>
  39 #endif
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 /* ------------------------------------------------------------------------- */
  44 /*
  45  * Miscelaneous platform dependent initialisations
  46  */
  47
  48 static void afeb9260_nand_hw_init(void)
  49 {
  50         unsigned long csa;
  51         struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
  52         struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
  53
  54         /* Assign CS3 to NAND/SmartMedia Interface */
  55         csa = readl(&matrix->ebicsa);
  56         csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
  57         writel(csa, &matrix->ebicsa);
  58
  59         /* Configure SMC CS3 for NAND/SmartMedia */
  60         writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
  61                 AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
  62                 &smc->cs[3].setup);
  63         writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
  64                 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
  65                 &smc->cs[3].pulse);
  66         writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
  67                 &smc->cs[3].cycle);
  68         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
  69                 AT91_SMC_MODE_EXNW_DISABLE |
  70                 AT91_SMC_MODE_DBW_8 |
  71                 AT91_SMC_MODE_TDF_CYCLE(2),
  72                 &smc->cs[3].mode);
  73
  74         /* Configure RDY/BSY */
  75         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
  76
  77         /* Enable NandFlash */
  78         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
  79 }
  80
  81 #ifdef CONFIG_MACB
  82 static void afeb9260_macb_hw_init(void)
  83 {
  84         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
  85         struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
  86         struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
  87         unsigned long erstl;
  88
  89
  90         /* Enable EMAC clock */
  91         writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
  92
  93
  94         /*
  95          * Disable pull-up on:
  96          *      RXDV (PA17) => PHY normal mode (not Test mode)
  97          *      ERX0 (PA14) => PHY ADDR0
  98          *      ERX1 (PA15) => PHY ADDR1
  99          *      ERX2 (PA25) => PHY ADDR2
 100          *      ERX3 (PA26) => PHY ADDR3
 101          *      ECRS (PA28) => PHY ADDR4  => PHYADDR = 0x0
 102          *
 103          * PHY has internal pull-down
 104          */
 105         writel(pin_to_mask(AT91_PIN_PA14) |
 106                pin_to_mask(AT91_PIN_PA15) |
 107                pin_to_mask(AT91_PIN_PA17) |
 108                pin_to_mask(AT91_PIN_PA25) |
 109                pin_to_mask(AT91_PIN_PA26) |
 110                pin_to_mask(AT91_PIN_PA28),
 111                &pioa->pudr);
 112
 113         erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
 114
 115         /* Need to reset PHY -> 500ms reset */
 116         writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
 117                 AT91_RSTC_MR_URSTEN, &rstc->mr);
 118         writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);
 119
 120         /* Wait for end hardware reset */
 121         while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL))
 122                 ;
 123         /* Restore NRST value */
 124         writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN,
 125                 &rstc->mr);
 126
 127
 128         /* Re-enable pull-up */
 129         writel(pin_to_mask(AT91_PIN_PA14) |
 130                pin_to_mask(AT91_PIN_PA15) |
 131                pin_to_mask(AT91_PIN_PA17) |
 132                pin_to_mask(AT91_PIN_PA25) |
 133                pin_to_mask(AT91_PIN_PA26) |
 134                pin_to_mask(AT91_PIN_PA28),
 135                &pioa->puer);
 136
 137         at91_macb_hw_init();
 138 }
 139 #endif
 140 int board_early_init_f(void)
 141 {
 142         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
 143         /* Enable clocks for all PIOs */
 144         writel((1 << ATMEL_ID_PIOA) |
 145                 (1 << ATMEL_ID_PIOB) |
 146                 (1 << ATMEL_ID_PIOC),
 147                 &pmc->pcer);
 148         return 0;
 149 }
 150 int board_init(void)
 151 {
 152         /* arch number of AT91SAM9260EK-Board */
 153         gd->bd->bi_arch_number = MACH_TYPE_AFEB9260;
 154         /* adress of boot parameters */
 155         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 156
 157         at91_seriald_hw_init();
 158 #ifdef CONFIG_CMD_NAND
 159         afeb9260_nand_hw_init();
 160 #endif
 161         at91_spi0_hw_init((1 << 0) | (1 << 1));
 162 #ifdef CONFIG_MACB
 163         afeb9260_macb_hw_init();
 164 #endif
 165
 166         return 0;
 167 }
 168
 169 int dram_init(void)
 170 {
 171         gd->ram_size = get_ram_size(
 172         (void *)CONFIG_SYS_SDRAM_BASE,
 173                 CONFIG_SYS_SDRAM_SIZE);
 174
 175         return 0;
 176 }
 177
 178 #ifdef CONFIG_RESET_PHY_R
 179 void reset_phy(void)
 180 {
 181 }
 182 #endif
 183
 184 int board_eth_init(bd_t *bis)
 185 {
 186         int rc = 0;
 187 #ifdef CONFIG_MACB
 188         rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x01);
 189 #endif
 190         return rc;
 191 }