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 */ 26 static 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", __func__); 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", __func__); 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", __func__); 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 95 static 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 } 105 106 static const MemoryRegionOps omap_tap_ops = { 107 .read = omap_tap_read, 108 .write = omap_tap_write, 109 .endianness = DEVICE_NATIVE_ENDIAN, 110 }; 111 112 void 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