board/cmc_pu2/cmc_pu2.c

   1 /*
   2  * (C) Copyright 2002
   3  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   4  * Marius Groeger <mgroeger@sysgo.de>
   5  *
   6  * Modified for CMC_PU2 (removed Smart Media support) by Gary Jennejohn
   7  * (2004) garyj@denx.de
   8  *
   9  * Modified for CMC_BASIC by Martin Krause (2005), TQ-Systems GmbH
  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/mach-types.h>
  32 #include <asm/arch/AT91RM9200.h>
  33 #include <at91rm9200_net.h>
  34 #include <dm9161.h>
  35
  36 /* ------------------------------------------------------------------------- */
  37 /*
  38  * Miscelaneous platform dependent initialisations
  39  */
  40 #define CMC_HP_BASIC    1
  41 #define CMC_PU2         2
  42 #define CMC_BASIC       4
  43
  44 int hw_detect (void);
  45
  46 int board_init (void)
  47 {
  48         DECLARE_GLOBAL_DATA_PTR;
  49         AT91PS_PIO piob = AT91C_BASE_PIOB;
  50         AT91PS_PIO pioc = AT91C_BASE_PIOC;
  51
  52         /* Enable Ctrlc */
  53         console_init_f ();
  54
  55         /* Correct IRDA resistor problem */
  56         /* Set PA23_TXD in Output */
  57         /* (AT91PS_PIO) AT91C_BASE_PIOA->PIO_OER = AT91C_PA23_TXD2; */
  58
  59         /* memory and cpu-speed are setup before relocation */
  60         /* so we do _nothing_ here */
  61
  62         /* PIOB and PIOC clock enabling */
  63         *AT91C_PMC_PCER = 1 << AT91C_ID_PIOB;
  64         *AT91C_PMC_PCER = 1 << AT91C_ID_PIOC;
  65
  66         /*
  67          * configure PC0-PC3 as input without pull ups, so RS485 driver enable
  68          * (CMC-PU2) and digital outputs (CMC-BASIC) are deactivated.
  69          */
  70         pioc->PIO_ODR = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
  71                         AT91C_PIO_PC2 | AT91C_PIO_PC3;
  72         pioc->PIO_PPUDR = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
  73                         AT91C_PIO_PC2 | AT91C_PIO_PC3;
  74         pioc->PIO_PER = AT91C_PIO_PC0 | AT91C_PIO_PC1 |
  75                         AT91C_PIO_PC2 | AT91C_PIO_PC3;
  76
  77         /*
  78          * On CMC-PU2 board configure PB3-PB6 to input without pull ups to
  79          * clear the duo LEDs (the external pull downs assure a proper
  80          * signal). On CMC-BASIC and CMC-HP-BASIC set PB3-PB6 to output and
  81          * drive it high, to configure current measurement on AINx.
  82          */
  83         if (hw_detect() & CMC_PU2) {
  84                 piob->PIO_ODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
  85                                 AT91C_PIO_PB5 | AT91C_PIO_PB6;
  86         }
  87         else if ((hw_detect() & CMC_BASIC) || (hw_detect() & CMC_HP_BASIC)) {
  88                 piob->PIO_SODR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
  89                                 AT91C_PIO_PB5 | AT91C_PIO_PB6;
  90                 piob->PIO_OER = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
  91                                 AT91C_PIO_PB5 | AT91C_PIO_PB6;
  92         }
  93         piob->PIO_PPUDR = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
  94                         AT91C_PIO_PB5 | AT91C_PIO_PB6;
  95         piob->PIO_PER = AT91C_PIO_PB3 | AT91C_PIO_PB4 |
  96                         AT91C_PIO_PB5 | AT91C_PIO_PB6;
  97
  98         /*
  99          * arch number of CMC_PU2-Board. MACH_TYPE_CMC_PU2 is not supported in
 100          * the linuxarm kernel, yet.
 101          */
 102         /* gd->bd->bi_arch_number = MACH_TYPE_CMC_PU2; */
 103         gd->bd->bi_arch_number = 251;
 104         /* adress of boot parameters */
 105         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 106
 107         return 0;
 108 }
 109
 110 int dram_init (void)
 111 {
 112         DECLARE_GLOBAL_DATA_PTR;
 113
 114         gd->bd->bi_dram[0].start = PHYS_SDRAM;
 115         gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
 116         return 0;
 117 }
 118
 119 int checkboard (void)
 120 {
 121         if (hw_detect() & CMC_PU2)
 122                 puts ("Board: CMC-PU2 (Rittal GmbH)\n");
 123         else if (hw_detect() & CMC_BASIC)
 124                 puts ("Board: CMC-BASIC (Rittal GmbH)\n");
 125         else if (hw_detect() & CMC_HP_BASIC)
 126                 puts ("Board: CMC-HP-BASIC (Rittal GmbH)\n");
 127         else
 128                 puts ("Board: unknown\n");
 129         return 0;
 130 }
 131
 132 int hw_detect (void)
 133 {
 134         AT91PS_PIO pio = AT91C_BASE_PIOB;
 135
 136         /* PIOB clock enabling */
 137         *AT91C_PMC_PCER = 1 << AT91C_ID_PIOB;
 138
 139         /* configure PB12 as input without pull up */
 140         pio->PIO_ODR = AT91C_PIO_PB12;
 141         pio->PIO_PPUDR = AT91C_PIO_PB12;
 142         pio->PIO_PER = AT91C_PIO_PB12;
 143
 144         /* configure PB13 as input without pull up */
 145         pio->PIO_ODR = AT91C_PIO_PB13;
 146         pio->PIO_PPUDR = AT91C_PIO_PB13;
 147         pio->PIO_PER = AT91C_PIO_PB13;
 148
 149         /* read board identification pin */
 150         if (pio->PIO_PDSR & AT91C_PIO_PB12)
 151                 return ((pio->PIO_PDSR & AT91C_PIO_PB13)
 152                         ? CMC_PU2 : 0);
 153         else
 154                 return ((pio->PIO_PDSR & AT91C_PIO_PB13)
 155                         ? CMC_HP_BASIC : CMC_BASIC);
 156 }
 157
 158 #ifdef CONFIG_DRIVER_ETHER
 159 #if (CONFIG_COMMANDS & CFG_CMD_NET)
 160
 161 /*
 162  * Name:
 163  *      at91rm9200_GetPhyInterface
 164  * Description:
 165  *      Initialise the interface functions to the PHY
 166  * Arguments:
 167  *      None
 168  * Return value:
 169  *      None
 170  */
 171 void at91rm9200_GetPhyInterface(AT91PS_PhyOps p_phyops)
 172 {
 173         p_phyops->Init = dm9161_InitPhy;
 174         p_phyops->IsPhyConnected = dm9161_IsPhyConnected;
 175         p_phyops->GetLinkSpeed = dm9161_GetLinkSpeed;
 176         p_phyops->AutoNegotiate = dm9161_AutoNegotiate;
 177 }
 178
 179 #endif  /* CONFIG_COMMANDS & CFG_CMD_NET */
 180 #endif  /* CONFIG_DRIVER_ETHER */