board/calao/sbc35_a9g20/sbc35_a9g20.c

   1 /*
   2  * (C) Copyright 2007-2008
   3  * Stelian Pop <stelian.pop@leadtechdesign.com>
   4  * Lead Tech Design <www.leadtechdesign.com>
   5  *
   6  * Copyright (C) 2009
   7  * Albin Tonnerre, Free-Electrons <albin.tonnerre@free-electrons.com>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <asm/io.h>
  30 #include <asm/arch/at91sam9260_matrix.h>
  31 #include <asm/arch/at91sam9_smc.h>
  32 #include <asm/arch/at91_common.h>
  33 #include <asm/arch/at91_pmc.h>
  34 #include <asm/arch/at91_rstc.h>
  35 #include <asm/arch/gpio.h>
  36
  37 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
  38 #include <net.h>
  39 #endif
  40 #include <netdev.h>
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 /* ------------------------------------------------------------------------- */
  45 /*
  46  * Miscelaneous platform dependent initialisations
  47  */
  48
  49 #ifdef CONFIG_CMD_NAND
  50 static void sbc35_a9g20_nand_hw_init(void)
  51 {
  52         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
  53         struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
  54         struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
  55         unsigned long csa;
  56
  57         /* Enable CS3 */
  58         csa = readl(&matrix->ebicsa);
  59         csa |= AT91_MATRIX_CS3A_SMC_SMARTMEDIA;
  60         writel(csa, &matrix->ebicsa);
  61
  62         /* Configure SMC CS3 for NAND/SmartMedia */
  63         writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
  64                 AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
  65                 &smc->cs[3].setup);
  66         writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(3) |
  67                 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(3),
  68                 &smc->cs[3].pulse);
  69         writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(5),
  70                 &smc->cs[3].cycle);
  71         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
  72                 AT91_SMC_MODE_EXNW_DISABLE |
  73 #ifdef CONFIG_SYS_NAND_DBW_16
  74                 AT91_SMC_MODE_DBW_16 |
  75 #else /* CONFIG_SYS_NAND_DBW_8 */
  76                 AT91_SMC_MODE_DBW_8 |
  77 #endif
  78                 AT91_SMC_MODE_TDF_CYCLE(2),
  79                 &smc->cs[3].mode);
  80
  81         writel(1 << ATMEL_ID_PIOC, &pmc->pcer);
  82
  83         /* Configure RDY/BSY */
  84         at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
  85
  86         /* Enable NandFlash */
  87         at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
  88 }
  89 #endif
  90
  91 #ifdef CONFIG_MACB
  92 static void sbc35_a9g20_macb_hw_init(void)
  93 {
  94         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
  95         struct at91_port *pioa = (struct at91_port *)ATMEL_BASE_PIOA;
  96         struct at91_rstc *rstc = (struct at91_rstc *)ATMEL_BASE_RSTC;
  97         unsigned long erstl;
  98
  99         /* Enable EMAC clock */
 100         writel(1 << ATMEL_ID_EMAC0, &pmc->pcer);
 101
 102         /*
 103          * Disable pull-up on:
 104          *      RXDV (PA17) => PHY normal mode (not Test mode)
 105          *      ERX0 (PA14) => PHY ADDR0
 106          *      ERX1 (PA15) => PHY ADDR1
 107          *      ERX2 (PA25) => PHY ADDR2
 108          *      ERX3 (PA26) => PHY ADDR3
 109          *      ECRS (PA28) => PHY ADDR4  => PHYADDR = 0x0
 110          *
 111          * PHY has internal pull-down
 112          */
 113         writel(pin_to_mask(AT91_PIN_PA14) |
 114                pin_to_mask(AT91_PIN_PA15) |
 115                pin_to_mask(AT91_PIN_PA17) |
 116                pin_to_mask(AT91_PIN_PA25) |
 117                pin_to_mask(AT91_PIN_PA26) |
 118                pin_to_mask(AT91_PIN_PA28),
 119                &pioa->pudr);
 120
 121         erstl = readl(&rstc->mr) & AT91_RSTC_MR_ERSTL_MASK;
 122
 123         /* Need to reset PHY -> 500ms reset */
 124         writel(AT91_RSTC_KEY | AT91_RSTC_MR_ERSTL(13) |
 125                 AT91_RSTC_MR_URSTEN, &rstc->mr);
 126
 127         writel(AT91_RSTC_KEY | AT91_RSTC_CR_EXTRST, &rstc->cr);
 128
 129         /* Wait for end hardware reset */
 130         while (!(readl(&rstc->sr) & AT91_RSTC_SR_NRSTL))
 131                 ;
 132
 133         /* Restore NRST value */
 134         writel(AT91_RSTC_KEY | erstl | AT91_RSTC_MR_URSTEN,
 135                 &rstc->mr);
 136
 137         /* Re-enable pull-up */
 138         writel(pin_to_mask(AT91_PIN_PA14) |
 139                pin_to_mask(AT91_PIN_PA15) |
 140                pin_to_mask(AT91_PIN_PA17) |
 141                pin_to_mask(AT91_PIN_PA25) |
 142                pin_to_mask(AT91_PIN_PA26) |
 143                pin_to_mask(AT91_PIN_PA28),
 144                &pioa->puer);
 145
 146         at91_macb_hw_init();
 147 }
 148 #endif
 149
 150 int board_init(void)
 151 {
 152         /* Enable Ctrlc */
 153         console_init_f();
 154
 155         gd->bd->bi_arch_number = MACH_TYPE_SBC35_A9G20;
 156         /* adress of boot parameters */
 157         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 158
 159         at91_seriald_hw_init();
 160         sbc35_a9g20_nand_hw_init();
 161 #ifdef CONFIG_ATMEL_SPI
 162         at91_spi0_hw_init(1 << 4 | 1 << 5);
 163 #endif
 164 #ifdef CONFIG_MACB
 165         sbc35_a9g20_macb_hw_init();
 166 #endif
 167
 168         return 0;
 169 }
 170
 171 int dram_init(void)
 172 {
 173         gd->ram_size = get_ram_size(
 174                 (void *)CONFIG_SYS_SDRAM_BASE,
 175                 CONFIG_SYS_SDRAM_SIZE);
 176         return 0;
 177 }
 178
 179 #ifdef CONFIG_RESET_PHY_R
 180 void reset_phy(void)
 181 {
 182 }
 183 #endif
 184
 185 int board_eth_init(bd_t *bis)
 186 {
 187         int rc = 0;
 188 #ifdef CONFIG_MACB
 189         rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
 190 #endif
 191         return rc;
 192 }