hw/omap_tap.c

   1 /*
   2  * TI OMAP TEST-Chip-level TAP emulation.
   3  *
   4  * Copyright (C) 2007-2008 Nokia Corporation
   5  * Written by Andrzej Zaborowski <andrew@openedhand.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 or
  10  * (at your option) any later version of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "hw.h"
  22 #include "omap.h"
  23
  24 /* TEST-Chip-level TAP */
  25 static uint32_t omap_tap_read(void *opaque, target_phys_addr_t addr)
  26 {
  27     struct omap_mpu_state_s *s = (struct omap_mpu_state_s *) opaque;
  28
  29     switch (addr) {
  30     case 0x204: /* IDCODE_reg */
  31         switch (s->mpu_model) {
  32         case omap2420:
  33         case omap2422:
  34         case omap2423:
  35             return 0x5b5d902f;  /* ES 2.2 */
  36         case omap2430:
  37             return 0x5b68a02f;  /* ES 2.2 */
  38         case omap3430:
  39             return 0x1b7ae02f;  /* ES 2 */
  40         default:
  41             hw_error("%s: Bad mpu model\n", __FUNCTION__);
  42         }
  43
  44     case 0x208: /* PRODUCTION_ID_reg for OMAP2 */
  45     case 0x210: /* PRODUCTION_ID_reg for OMAP3 */
  46         switch (s->mpu_model) {
  47         case omap2420:
  48             return 0x000254f0;  /* POP ESHS2.1.1 in N91/93/95, ES2 in N800 */
  49         case omap2422:
  50             return 0x000400f0;
  51         case omap2423:
  52             return 0x000800f0;
  53         case omap2430:
  54             return 0x000000f0;
  55         case omap3430:
  56             return 0x000000f0;
  57         default:
  58             hw_error("%s: Bad mpu model\n", __FUNCTION__);
  59         }
  60
  61     case 0x20c:
  62         switch (s->mpu_model) {
  63         case omap2420:
  64         case omap2422:
  65         case omap2423:
  66             return 0xcafeb5d9;  /* ES 2.2 */
  67         case omap2430:
  68             return 0xcafeb68a;  /* ES 2.2 */
  69         case omap3430:
  70             return 0xcafeb7ae;  /* ES 2 */
  71         default:
  72             hw_error("%s: Bad mpu model\n", __FUNCTION__);
  73         }
  74
  75     case 0x218: /* DIE_ID_reg */
  76         return ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
  77     case 0x21c: /* DIE_ID_reg */
  78         return 0x54 << 24;
  79     case 0x220: /* DIE_ID_reg */
  80         return ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
  81     case 0x224: /* DIE_ID_reg */
  82         return ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
  83     }
  84
  85     OMAP_BAD_REG(addr);
  86     return 0;
  87 }
  88
  89 static void omap_tap_write(void *opaque, target_phys_addr_t addr,
  90                 uint32_t value)
  91 {
  92     OMAP_BAD_REG(addr);
  93 }
  94
  95 static CPUReadMemoryFunc * const omap_tap_readfn[] = {
  96     omap_badwidth_read32,
  97     omap_badwidth_read32,
  98     omap_tap_read,
  99 };
 100
 101 static CPUWriteMemoryFunc * const omap_tap_writefn[] = {
 102     omap_badwidth_write32,
 103     omap_badwidth_write32,
 104     omap_tap_write,
 105 };
 106
 107 void omap_tap_init(struct omap_target_agent_s *ta,
 108                 struct omap_mpu_state_s *mpu)
 109 {
 110     omap_l4_attach(ta, 0, l4_register_io_memory(
 111                             omap_tap_readfn, omap_tap_writefn, mpu));
 112 }