board/siemens/SCM/fpga_scm.c

   1 /*
   2  * (C) Copyright 2002
   3  * Wolfgang Grandegger, DENX Software Engineering, wg@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 <mpc8260.h>
  27 #include <common.h>
  28 #include "../common/fpga.h"
  29
  30 fpga_t fpga_list[] = {
  31         {"FIOX", CFG_FIOX_BASE,
  32          CFG_PD_FIOX_INIT, CFG_PD_FIOX_PROG, CFG_PD_FIOX_DONE}
  33         ,
  34         {"FDOHM", CFG_FDOHM_BASE,
  35          CFG_PD_FDOHM_INIT, CFG_PD_FDOHM_PROG, CFG_PD_FDOHM_DONE}
  36 };
  37 int fpga_count = sizeof (fpga_list) / sizeof (fpga_t);
  38
  39
  40 ulong fpga_control (fpga_t * fpga, int cmd)
  41 {
  42         volatile immap_t *immr = (immap_t *) CFG_IMMR;
  43
  44         switch (cmd) {
  45         case FPGA_INIT_IS_HIGH:
  46                 immr->im_ioport.iop_pdird &= ~fpga->init_mask;  /* input */
  47                 return (immr->im_ioport.iop_pdatd & fpga->init_mask) ? 1 : 0;
  48
  49         case FPGA_INIT_SET_LOW:
  50                 immr->im_ioport.iop_pdird |= fpga->init_mask;   /* output */
  51                 immr->im_ioport.iop_pdatd &= ~fpga->init_mask;
  52                 break;
  53
  54         case FPGA_INIT_SET_HIGH:
  55                 immr->im_ioport.iop_pdird |= fpga->init_mask;   /* output */
  56                 immr->im_ioport.iop_pdatd |= fpga->init_mask;
  57                 break;
  58
  59         case FPGA_PROG_SET_LOW:
  60                 immr->im_ioport.iop_pdatd &= ~fpga->prog_mask;
  61                 break;
  62
  63         case FPGA_PROG_SET_HIGH:
  64                 immr->im_ioport.iop_pdatd |= fpga->prog_mask;
  65                 break;
  66
  67         case FPGA_DONE_IS_HIGH:
  68                 return (immr->im_ioport.iop_pdatd & fpga->done_mask) ? 1 : 0;
  69
  70         case FPGA_READ_MODE:
  71                 break;
  72
  73         case FPGA_LOAD_MODE:
  74                 break;
  75
  76         case FPGA_GET_ID:
  77                 if (fpga->conf_base == CFG_FIOX_BASE) {
  78                         ulong ver =
  79                                 *(volatile ulong *) (fpga->conf_base + 0x10);
  80                         return ((ver >> 10) & 0xf) + ((ver >> 2) & 0xf0);
  81                 } else if (fpga->conf_base == CFG_FDOHM_BASE) {
  82                         return (*(volatile ushort *) fpga->conf_base) & 0xff;
  83                 } else {
  84                         return *(volatile ulong *) fpga->conf_base;
  85                 }
  86
  87         case FPGA_INIT_PORTS:
  88                 immr->im_ioport.iop_ppard &= ~fpga->init_mask;  /* INIT I/O */
  89                 immr->im_ioport.iop_psord &= ~fpga->init_mask;
  90                 immr->im_ioport.iop_pdird &= ~fpga->init_mask;
  91
  92                 immr->im_ioport.iop_ppard &= ~fpga->prog_mask;  /* PROG Output */
  93                 immr->im_ioport.iop_psord &= ~fpga->prog_mask;
  94                 immr->im_ioport.iop_pdird |= fpga->prog_mask;
  95
  96                 immr->im_ioport.iop_ppard &= ~fpga->done_mask;  /* DONE Input */
  97                 immr->im_ioport.iop_psord &= ~fpga->done_mask;
  98                 immr->im_ioport.iop_pdird &= ~fpga->done_mask;
  99
 100                 break;
 101
 102         }
 103         return 0;
 104 }