board/prodrive/alpr/alpr.c

   1 /*
   2  * (C) Copyright 2006
   3  * Stefan Roese, DENX Software Engineering, sr@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24
  25 #include <common.h>
  26 #include <libfdt.h>
  27 #include <fdt_support.h>
  28 #include <spd_sdram.h>
  29 #include <asm/ppc4xx-emac.h>
  30 #include <miiphy.h>
  31 #include <asm/processor.h>
  32 #include <asm/4xx_pci.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 extern int alpr_fpga_init(void);
  37
  38 int board_early_init_f (void)
  39 {
  40         /*-------------------------------------------------------------------------
  41          * Initialize EBC CONFIG
  42          *-------------------------------------------------------------------------*/
  43         mtebc(EBC0_CFG, EBC_CFG_LE_UNLOCK |
  44               EBC_CFG_PTD_DISABLE | EBC_CFG_RTC_64PERCLK |
  45               EBC_CFG_ATC_PREVIOUS | EBC_CFG_DTC_PREVIOUS |
  46               EBC_CFG_CTC_PREVIOUS | EBC_CFG_EMC_NONDEFAULT |
  47               EBC_CFG_PME_DISABLE | EBC_CFG_PR_32);
  48
  49         /*--------------------------------------------------------------------
  50          * Setup the interrupt controller polarities, triggers, etc.
  51          *-------------------------------------------------------------------*/
  52         /*
  53          * Because of the interrupt handling rework to handle 440GX interrupts
  54          * with the common code, we needed to change names of the UIC registers.
  55          * Here the new relationship:
  56          *
  57          * U-Boot name  440GX name
  58          * -----------------------
  59          * UIC0         UICB0
  60          * UIC1         UIC0
  61          * UIC2         UIC1
  62          * UIC3         UIC2
  63          */
  64         mtdcr (UIC1SR, 0xffffffff);     /* clear all */
  65         mtdcr (UIC1ER, 0x00000000);     /* disable all */
  66         mtdcr (UIC1CR, 0x00000009);     /* SMI & UIC1 crit are critical */
  67         mtdcr (UIC1PR, 0xfffffe03);     /* per manual */
  68         mtdcr (UIC1TR, 0x01c00000);     /* per manual */
  69         mtdcr (UIC1VR, 0x00000001);     /* int31 highest, base=0x000 */
  70         mtdcr (UIC1SR, 0xffffffff);     /* clear all */
  71
  72         mtdcr (UIC2SR, 0xffffffff);     /* clear all */
  73         mtdcr (UIC2ER, 0x00000000);     /* disable all */
  74         mtdcr (UIC2CR, 0x00000000);     /* all non-critical */
  75         mtdcr (UIC2PR, 0xffffe0ff);     /* per ref-board manual */
  76         mtdcr (UIC2TR, 0x00ffc000);     /* per ref-board manual */
  77         mtdcr (UIC2VR, 0x00000001);     /* int31 highest, base=0x000 */
  78         mtdcr (UIC2SR, 0xffffffff);     /* clear all */
  79
  80         mtdcr (UIC3SR, 0xffffffff);     /* clear all */
  81         mtdcr (UIC3ER, 0x00000000);     /* disable all */
  82         mtdcr (UIC3CR, 0x00000000);     /* all non-critical */
  83         mtdcr (UIC3PR, 0xffffffff);     /* per ref-board manual */
  84         mtdcr (UIC3TR, 0x00ff8c0f);     /* per ref-board manual */
  85         mtdcr (UIC3VR, 0x00000001);     /* int31 highest, base=0x000 */
  86         mtdcr (UIC3SR, 0xffffffff);     /* clear all */
  87
  88         mtdcr (UIC0SR, 0xfc000000); /* clear all */
  89         mtdcr (UIC0ER, 0x00000000); /* disable all */
  90         mtdcr (UIC0CR, 0x00000000); /* all non-critical */
  91         mtdcr (UIC0PR, 0xfc000000); /* */
  92         mtdcr (UIC0TR, 0x00000000); /* */
  93         mtdcr (UIC0VR, 0x00000001); /* */
  94
  95         /* Setup shutdown/SSD empty interrupt as inputs */
  96         out32(GPIO0_TCR, in32(GPIO0_TCR) & ~(CONFIG_SYS_GPIO_SHUTDOWN | CONFIG_SYS_GPIO_SSD_EMPTY));
  97         out32(GPIO0_ODR, in32(GPIO0_ODR) & ~(CONFIG_SYS_GPIO_SHUTDOWN | CONFIG_SYS_GPIO_SSD_EMPTY));
  98
  99         /* Setup GPIO/IRQ multiplexing */
 100         mtsdr(SDR0_PFC0, 0x01a33e00);
 101
 102         return 0;
 103 }
 104
 105 int last_stage_init(void)
 106 {
 107         unsigned short reg;
 108
 109         /*
 110          * Configure LED's of both Marvell 88E1111 PHY's
 111          *
 112          * This has to be done after the 4xx ethernet driver is loaded,
 113          * so "last_stage_init()" is the right place.
 114          */
 115         miiphy_read("ppc_4xx_eth2", CONFIG_PHY2_ADDR, 0x18, &reg);
 116         reg |= 0x0001;
 117         miiphy_write("ppc_4xx_eth2", CONFIG_PHY2_ADDR, 0x18, reg);
 118         miiphy_read("ppc_4xx_eth3", CONFIG_PHY3_ADDR, 0x18, &reg);
 119         reg |= 0x0001;
 120         miiphy_write("ppc_4xx_eth3", CONFIG_PHY3_ADDR, 0x18, reg);
 121
 122         return 0;
 123 }
 124
 125 static int board_rev(void)
 126 {
 127         /* Setup as input */
 128         out32(GPIO0_TCR, in32(GPIO0_TCR) & ~(CONFIG_SYS_GPIO_REV0 | CONFIG_SYS_GPIO_REV1));
 129         out32(GPIO0_ODR, in32(GPIO0_ODR) & ~(CONFIG_SYS_GPIO_REV0 | CONFIG_SYS_GPIO_REV1));
 130
 131         return (in32(GPIO0_IR) >> 16) & 0x3;
 132 }
 133
 134 int checkboard (void)
 135 {
 136         char *s = getenv ("serial#");
 137
 138         printf ("Board: ALPR");
 139         if (s != NULL) {
 140                 puts (", serial# ");
 141                 puts (s);
 142         }
 143         printf(" (Rev. %d)\n", board_rev());
 144
 145         return (0);
 146 }
 147
 148 #if defined(CONFIG_PCI)
 149 /*
 150  * Override weak pci_pre_init()
 151  */
 152 int pci_pre_init(struct pci_controller *hose)
 153 {
 154         if (__pci_pre_init(hose) == 0)
 155                 return 0;
 156
 157         /* FPGA Init */
 158         alpr_fpga_init();
 159
 160         return 1;
 161 }
 162
 163 /*************************************************************************
 164  * Override weak is_pci_host()
 165  *
 166  *      This routine is called to determine if a pci scan should be
 167  *      performed. With various hardware environments (especially cPCI and
 168  *      PPMC) it's insufficient to depend on the state of the arbiter enable
 169  *      bit in the strap register, or generic host/adapter assumptions.
 170  *
 171  *      Rather than hard-code a bad assumption in the general 440 code, the
 172  *      440 pci code requires the board to decide at runtime.
 173  *
 174  *      Return 0 for adapter mode, non-zero for host (monarch) mode.
 175  *
 176  *
 177  ************************************************************************/
 178 static void wait_for_pci_ready(void)
 179 {
 180         /*
 181          * Configure EREADY as input
 182          */
 183         out32(GPIO0_TCR, in32(GPIO0_TCR) & ~CONFIG_SYS_GPIO_EREADY);
 184         udelay(1000);
 185
 186         for (;;) {
 187                 if (in32(GPIO0_IR) & CONFIG_SYS_GPIO_EREADY)
 188                         return;
 189         }
 190
 191 }
 192
 193 int is_pci_host(struct pci_controller *hose)
 194 {
 195         wait_for_pci_ready();
 196         return 1;               /* return 1 for host controller */
 197 }
 198 #endif /* defined(CONFIG_PCI) */
 199
 200 /*************************************************************************
 201  *  pci_master_init
 202  *
 203  ************************************************************************/
 204 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_MASTER_INIT)
 205 void pci_master_init(struct pci_controller *hose)
 206 {
 207         /*--------------------------------------------------------------------------+
 208           | PowerPC440 PCI Master configuration.
 209           | Map PLB/processor addresses to PCI memory space.
 210           |   PLB address 0xA0000000-0xCFFFFFFF ==> PCI address 0x80000000-0xCFFFFFFF
 211           |   Use byte reversed out routines to handle endianess.
 212           | Make this region non-prefetchable.
 213           +--------------------------------------------------------------------------*/
 214         out32r( PCIL0_POM0SA, 0 ); /* disable */
 215         out32r( PCIL0_POM1SA, 0 ); /* disable */
 216         out32r( PCIL0_POM2SA, 0 ); /* disable */
 217
 218         out32r(PCIL0_POM0LAL, CONFIG_SYS_PCI_MEMBASE);  /* PMM0 Local Address */
 219         out32r(PCIL0_POM0LAH, 0x00000003);      /* PMM0 Local Address */
 220         out32r(PCIL0_POM0PCIAL, CONFIG_SYS_PCI_MEMBASE);        /* PMM0 PCI Low Address */
 221         out32r(PCIL0_POM0PCIAH, 0x00000000);    /* PMM0 PCI High Address */
 222         out32r(PCIL0_POM0SA, ~(0x10000000 - 1) | 1);    /* 256MB + enable region */
 223
 224         out32r(PCIL0_POM1LAL, CONFIG_SYS_PCI_MEMBASE2); /* PMM0 Local Address */
 225         out32r(PCIL0_POM1LAH, 0x00000003);      /* PMM0 Local Address */
 226         out32r(PCIL0_POM1PCIAL, CONFIG_SYS_PCI_MEMBASE2);       /* PMM0 PCI Low Address */
 227         out32r(PCIL0_POM1PCIAH, 0x00000000);    /* PMM0 PCI High Address */
 228         out32r(PCIL0_POM1SA, ~(0x10000000 - 1) | 1);    /* 256MB + enable region */
 229 }
 230 #endif                          /* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_MASTER_INIT) */