board/ronetix/pm9g45/pm9g45.c

   1 /*
   2  * (C) Copyright 2010
   3  * Ilko Iliev <iliev@ronetix.at>
   4  * Asen Dimov <dimov@ronetix.at>
   5  * Ronetix GmbH <www.ronetix.at>
   6  *
   7  * (C) Copyright 2007-2008
   8  * Stelian Pop <stelian@popies.net>
   9  * Lead Tech Design <www.leadtechdesign.com>
  10  *
  11  * See file CREDITS for list of people who contributed to this
  12  * project.
  13  *
  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License as
  16  * published by the Free Software Foundation; either version 2 of
  17  * the License, or (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  27  * MA 02111-1307 USA
  28  */
  29
  30 #include <common.h>
  31 #include <asm/sizes.h>
  32 #include <asm/io.h>
  33 #include <asm/arch/at91sam9_smc.h>
  34 #include <asm/arch/at91_common.h>
  35 #include <asm/arch/at91_pmc.h>
  36 #include <asm/arch/at91_rstc.h>
  37 #include <asm/arch/at91_matrix.h>
  38 #include <asm/arch/gpio.h>
  39 #include <asm/arch/clk.h>
  40 #if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
  41 #include <net.h>
  42 #endif
  43 #include <netdev.h>
  44
  45 DECLARE_GLOBAL_DATA_PTR;
  46
  47 /*
  48  * Miscelaneous platform dependent initialisations
  49  */
  50
  51 #ifdef CONFIG_CMD_NAND
  52 static void pm9g45_nand_hw_init(void)
  53 {
  54         unsigned long csa;
  55         struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
  56         struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
  57         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
  58
  59         /* Enable CS3 */
  60         csa = readl(&matrix->ccr[6]) | AT91_MATRIX_CSA_EBI_CS3A;
  61         writel(csa, &matrix->ccr[6]);
  62
  63         /* Configure SMC CS3 for NAND/SmartMedia */
  64         writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
  65                 AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
  66                 &smc->cs[3].setup);
  67
  68         writel(AT91_SMC_PULSE_NWE(4) | AT91_SMC_PULSE_NCS_WR(3) |
  69                 AT91_SMC_PULSE_NRD(3) | AT91_SMC_PULSE_NCS_RD(2),
  70                 &smc->cs[3].pulse);
  71
  72         writel(AT91_SMC_CYCLE_NWE(7) | AT91_SMC_CYCLE_NRD(4),
  73                 &smc->cs[3].cycle);
  74
  75         writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
  76                 AT91_SMC_MODE_EXNW_DISABLE |
  77                 AT91_SMC_MODE_DBW_8 |
  78                 AT91_SMC_MODE_TDF_CYCLE(3),
  79                 &smc->cs[3].mode);
  80
  81         writel(1 << ATMEL_ID_PIOC, &pmc->pcer);
  82
  83 #ifdef CONFIG_SYS_NAND_READY_PIN
  84         /* Configure RDY/BSY */
  85         at91_set_pio_input(CONFIG_SYS_NAND_READY_PIN, 1);
  86 #endif
  87
  88         /* Enable NandFlash */
  89         at91_set_pio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
  90 }
  91 #endif
  92
  93 #ifdef CONFIG_MACB
  94 static void pm9g45_macb_hw_init(void)
  95 {
  96         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
  97
  98         /*
  99          * PD2 enables the 50MHz oscillator for Ethernet PHY
 100          * 1 - enable
 101          * 0 - disable
 102          */
 103         at91_set_pio_output(AT91_PIO_PORTD, 2, 1);
 104         at91_set_pio_value(AT91_PIO_PORTD, 2, 1); /* 1- enable, 0 - disable */
 105
 106         /* Enable clock */
 107         writel(1 << ATMEL_ID_EMAC, &pmc->pcer);
 108
 109         /*
 110          * Disable pull-up on:
 111          *      RXDV (PA15) => PHY normal mode (not Test mode)
 112          *      ERX0 (PA12) => PHY ADDR0
 113          *      ERX1 (PA13) => PHY ADDR1 => PHYADDR = 0x0
 114          *
 115          * PHY has internal pull-down
 116          */
 117         at91_set_pio_pullup(AT91_PIO_PORTA, 15, 0);
 118         at91_set_pio_pullup(AT91_PIO_PORTA, 12, 0);
 119         at91_set_pio_pullup(AT91_PIO_PORTA, 13, 0);
 120
 121         /* Re-enable pull-up */
 122         at91_set_pio_pullup(AT91_PIO_PORTA, 15, 1);
 123         at91_set_pio_pullup(AT91_PIO_PORTA, 12, 1);
 124         at91_set_pio_pullup(AT91_PIO_PORTA, 13, 1);
 125
 126         at91_macb_hw_init();
 127 }
 128 #endif
 129
 130 int board_init(void)
 131 {
 132         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
 133
 134         /* Enable Ctrlc */
 135         console_init_f();
 136
 137         writel((1 << ATMEL_ID_PIOA) |
 138                 (1 << ATMEL_ID_PIOB) |
 139                 (1 << ATMEL_ID_PIOC) |
 140                 (1 << ATMEL_ID_PIODE), &pmc->pcer);
 141
 142         /* adress of boot parameters */
 143         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 144
 145         at91_seriald_hw_init();
 146 #ifdef CONFIG_CMD_NAND
 147         pm9g45_nand_hw_init();
 148 #endif
 149
 150 #ifdef CONFIG_MACB
 151         pm9g45_macb_hw_init();
 152 #endif
 153         return 0;
 154 }
 155
 156 int dram_init(void)
 157 {
 158         /* dram_init must store complete ramsize in gd->ram_size */
 159         gd->ram_size = get_ram_size((void *)PHYS_SDRAM,
 160                                 PHYS_SDRAM_SIZE);
 161         return 0;
 162 }
 163
 164 void dram_init_banksize(void)
 165 {
 166         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 167         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
 168 }
 169
 170 #ifdef CONFIG_RESET_PHY_R
 171 void reset_phy(void)
 172 {
 173 #ifdef CONFIG_MACB
 174         /*
 175          * Initialize ethernet HW addr prior to starting Linux,
 176          * needed for nfsroot
 177          */
 178         eth_init(gd->bd);
 179 #endif
 180 }
 181 #endif
 182
 183 int board_eth_init(bd_t *bis)
 184 {
 185         int rc = 0;
 186 #ifdef CONFIG_MACB
 187         rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x01);
 188 #endif
 189         return rc;
 190 }