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