board/amcc/bubinga/bubinga.c

   1 /*
   2  * (C) Copyright 2000-2005
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/processor.h>
  10 #include <asm/io.h>
  11
  12 long int spd_sdram(void);
  13
  14 int board_early_init_f(void)
  15 {
  16         mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  17         mtdcr(UIC0ER, 0x00000000);      /* disable all ints */
  18         mtdcr(UIC0CR, 0x00000010);
  19         mtdcr(UIC0PR, 0xFFFF7FF0);      /* set int polarities */
  20         mtdcr(UIC0TR, 0x00000010);      /* set int trigger levels */
  21         mtdcr(UIC0SR, 0xFFFFFFFF);      /* clear all ints */
  22
  23         /*
  24          * Configure CPC0_PCI to enable PerWE as output
  25          * and enable the internal PCI arbiter if selected
  26          */
  27         if (in_8((void *)FPGA_REG1) & FPGA_REG1_PCI_INT_ARB)
  28                 mtdcr(CPC0_PCI, CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
  29         else
  30                 mtdcr(CPC0_PCI, CPC0_PCI_HOST_CFG_EN);
  31
  32         return 0;
  33 }
  34
  35 /*
  36  * Check Board Identity:
  37  */
  38 int checkboard(void)
  39 {
  40         char buf[64];
  41         int i = getenv_f("serial#", buf, sizeof(buf));
  42
  43         puts("Board: Bubinga - AMCC PPC405EP Evaluation Board");
  44
  45         if (i > 0) {
  46                 puts(", serial# ");
  47                 puts(buf);
  48         }
  49         putc('\n');
  50
  51         return (0);
  52 }
  53
  54 /* -------------------------------------------------------------------------
  55   initdram() reads EEPROM via I2c. EEPROM contains all of
  56   the necessary info for SDRAM controller configuration
  57    ------------------------------------------------------------------------- */
  58 phys_size_t initdram(void)
  59 {
  60         return spd_sdram();
  61 }