LXR qemu/hw/misc/omap

   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 "qemu/osdep.h"
  22#include "hw/hw.h"
  23#include "hw/arm/omap.h"
  24
  25/* TEST-Chip-level TAP */
  26static uint64_t omap_tap_read(void *opaque, hwaddr addr,
  27                              unsigned size)
  28{
  29    struct omap_mpu_state_s *s = (struct omap_mpu_state_s *) opaque;
  30
  31    if (size != 4) {
  32        return omap_badwidth_read32(opaque, addr);
  33    }
  34
  35    switch (addr) {
  36    case 0x204: /* IDCODE_reg */
  37        switch (s->mpu_model) {
  38        case omap2420:
  39        case omap2422:
  40        case omap2423:
  41            return 0x5b5d902f;  /* ES 2.2 */
  42        case omap2430:
  43            return 0x5b68a02f;  /* ES 2.2 */
  44        case omap3430:
  45            return 0x1b7ae02f;  /* ES 2 */
  46        default:
  47            hw_error("%s: Bad mpu model\n", __FUNCTION__);
  48        }
  49
  50    case 0x208: /* PRODUCTION_ID_reg for OMAP2 */
  51    case 0x210: /* PRODUCTION_ID_reg for OMAP3 */
  52        switch (s->mpu_model) {
  53        case omap2420:
  54            return 0x000254f0;  /* POP ESHS2.1.1 in N91/93/95, ES2 in N800 */
  55        case omap2422:
  56            return 0x000400f0;
  57        case omap2423:
  58            return 0x000800f0;
  59        case omap2430:
  60            return 0x000000f0;
  61        case omap3430:
  62            return 0x000000f0;
  63        default:
  64            hw_error("%s: Bad mpu model\n", __FUNCTION__);
  65        }
  66
  67    case 0x20c:
  68        switch (s->mpu_model) {
  69        case omap2420:
  70        case omap2422:
  71        case omap2423:
  72            return 0xcafeb5d9;  /* ES 2.2 */
  73        case omap2430:
  74            return 0xcafeb68a;  /* ES 2.2 */
  75        case omap3430:
  76            return 0xcafeb7ae;  /* ES 2 */
  77        default:
  78            hw_error("%s: Bad mpu model\n", __FUNCTION__);
  79        }
  80
  81    case 0x218: /* DIE_ID_reg */
  82        return ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
  83    case 0x21c: /* DIE_ID_reg */
  84        return 0x54 << 24;
  85    case 0x220: /* DIE_ID_reg */
  86        return ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
  87    case 0x224: /* DIE_ID_reg */
  88        return ('Q' << 24) | ('E' << 16) | ('M' << 8) | ('U' << 0);
  89    }
  90
  91    OMAP_BAD_REG(addr);
  92    return 0;
  93}
  94
  95static void omap_tap_write(void *opaque, hwaddr addr,
  96                           uint64_t value, unsigned size)
  97{
  98    if (size != 4) {
  99        omap_badwidth_write32(opaque, addr, value);
 100        return;
 101    }
 102
 103    OMAP_BAD_REG(addr);
 104}
 105
 106static const MemoryRegionOps omap_tap_ops = {
 107    .read = omap_tap_read,
 108    .write = omap_tap_write,
 109    .endianness = DEVICE_NATIVE_ENDIAN,
 110};
 111
 112void omap_tap_init(struct omap_target_agent_s *ta,
 113                struct omap_mpu_state_s *mpu)
 114{
 115    memory_region_init_io(&mpu->tap_iomem, NULL, &omap_tap_ops, mpu, "omap.tap",
 116                          omap_l4_region_size(ta, 0));
 117    omap_l4_attach(ta, 0, &mpu->tap_iomem);
 118}
 119