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