target-xtensa/core-fsf/core-isa.h

   1 /*
   2  * Xtensa processor core configuration information.
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  *
   8  * Copyright (C) 1999-2006 Tensilica Inc.
   9  */
  10
  11 #ifndef _XTENSA_CORE_H
  12 #define _XTENSA_CORE_H
  13
  14
  15 /****************************************************************************
  16             Parameters Useful for Any Code, USER or PRIVILEGED
  17  ****************************************************************************/
  18
  19 /*
  20  *  Note:  Macros of the form XCHAL_HAVE_*** have a value of 1 if the option is
  21  *  configured, and a value of 0 otherwise.  These macros are always defined.
  22  */
  23
  24
  25 /*----------------------------------------------------------------------
  26                                 ISA
  27   ----------------------------------------------------------------------*/
  28
  29 #define XCHAL_HAVE_BE                   1       /* big-endian byte ordering */
  30 #define XCHAL_HAVE_WINDOWED             1       /* windowed registers option */
  31 #define XCHAL_NUM_AREGS                 64      /* num of physical addr regs */
  32 #define XCHAL_NUM_AREGS_LOG2            6       /* log2(XCHAL_NUM_AREGS) */
  33 #define XCHAL_MAX_INSTRUCTION_SIZE      3       /* max instr bytes (3..8) */
  34 #define XCHAL_HAVE_DEBUG                1       /* debug option */
  35 #define XCHAL_HAVE_DENSITY              1       /* 16-bit instructions */
  36 #define XCHAL_HAVE_LOOPS                1       /* zero-overhead loops */
  37 #define XCHAL_HAVE_NSA                  1       /* NSA/NSAU instructions */
  38 #define XCHAL_HAVE_MINMAX               0       /* MIN/MAX instructions */
  39 #define XCHAL_HAVE_SEXT                 0       /* SEXT instruction */
  40 #define XCHAL_HAVE_CLAMPS               0       /* CLAMPS instruction */
  41 #define XCHAL_HAVE_MUL16                0       /* MUL16S/MUL16U instructions */
  42 #define XCHAL_HAVE_MUL32                0       /* MULL instruction */
  43 #define XCHAL_HAVE_MUL32_HIGH           0       /* MULUH/MULSH instructions */
  44 #define XCHAL_HAVE_L32R                 1       /* L32R instruction */
  45 #define XCHAL_HAVE_ABSOLUTE_LITERALS    1       /* non-PC-rel (extended) L32R */
  46 #define XCHAL_HAVE_CONST16              0       /* CONST16 instruction */
  47 #define XCHAL_HAVE_ADDX                 1       /* ADDX#/SUBX# instructions */
  48 #define XCHAL_HAVE_WIDE_BRANCHES        0       /* B*.W18 or B*.W15 instr's */
  49 #define XCHAL_HAVE_PREDICTED_BRANCHES   0       /* B[EQ/EQZ/NE/NEZ]T instr's */
  50 #define XCHAL_HAVE_CALL4AND12           1       /* (obsolete option) */
  51 #define XCHAL_HAVE_ABS                  1       /* ABS instruction */
  52 /*#define XCHAL_HAVE_POPC               0*/     /* POPC instruction */
  53 /*#define XCHAL_HAVE_CRC                0*/     /* CRC instruction */
  54 #define XCHAL_HAVE_RELEASE_SYNC         0       /* L32AI/S32RI instructions */
  55 #define XCHAL_HAVE_S32C1I               0       /* S32C1I instruction */
  56 #define XCHAL_HAVE_SPECULATION          0       /* speculation */
  57 #define XCHAL_HAVE_FULL_RESET           1       /* all regs/state reset */
  58 #define XCHAL_NUM_CONTEXTS              1       /* */
  59 #define XCHAL_NUM_MISC_REGS             2       /* num of scratch regs (0..4) */
  60 #define XCHAL_HAVE_TAP_MASTER           0       /* JTAG TAP control instr's */
  61 #define XCHAL_HAVE_PRID                 1       /* processor ID register */
  62 #define XCHAL_HAVE_THREADPTR            1       /* THREADPTR register */
  63 #define XCHAL_HAVE_BOOLEANS             0       /* boolean registers */
  64 #define XCHAL_HAVE_CP                   0       /* CPENABLE reg (coprocessor) */
  65 #define XCHAL_CP_MAXCFG                 0       /* max allowed cp id plus one */
  66 #define XCHAL_HAVE_MAC16                0       /* MAC16 package */
  67 #define XCHAL_HAVE_VECTORFPU2005        0       /* vector floating-point pkg */
  68 #define XCHAL_HAVE_FP                   0       /* floating point pkg */
  69 #define XCHAL_HAVE_VECTRA1              0       /* Vectra I  pkg */
  70 #define XCHAL_HAVE_VECTRALX             0       /* Vectra LX pkg */
  71 #define XCHAL_HAVE_HIFI2                0       /* HiFi2 Audio Engine pkg */
  72
  73
  74 /*----------------------------------------------------------------------
  75                                 MISC
  76   ----------------------------------------------------------------------*/
  77
  78 #define XCHAL_NUM_WRITEBUFFER_ENTRIES   4       /* size of write buffer */
  79 #define XCHAL_INST_FETCH_WIDTH          4       /* instr-fetch width in bytes */
  80 #define XCHAL_DATA_WIDTH                4       /* data width in bytes */
  81 /*  In T1050, applies to selected core load and store instructions (see ISA): */
  82 #define XCHAL_UNALIGNED_LOAD_EXCEPTION  1       /* unaligned loads cause exc. */
  83 #define XCHAL_UNALIGNED_STORE_EXCEPTION 1       /* unaligned stores cause exc.*/
  84
  85 #define XCHAL_SW_VERSION                800002  /* sw version of this header */
  86
  87 #define XCHAL_CORE_ID                   "fsf"   /* alphanum core name
  88                                                    (CoreID) set in the Xtensa
  89                                                    Processor Generator */
  90
  91 #define XCHAL_CORE_DESCRIPTION          "fsf standard core"
  92 #define XCHAL_BUILD_UNIQUE_ID           0x00006700      /* 22-bit sw build ID */
  93
  94 /*
  95  *  These definitions describe the hardware targeted by this software.
  96  */
  97 #define XCHAL_HW_CONFIGID0              0xC103C3FF      /* ConfigID hi 32 bits*/
  98 #define XCHAL_HW_CONFIGID1              0x0C006700      /* ConfigID lo 32 bits*/
  99 #define XCHAL_HW_VERSION_NAME           "LX2.0.0"       /* full version name */
 100 #define XCHAL_HW_VERSION_MAJOR          2200    /* major ver# of targeted hw */
 101 #define XCHAL_HW_VERSION_MINOR          0       /* minor ver# of targeted hw */
 102 #define XTHAL_HW_REL_LX2                1
 103 #define XTHAL_HW_REL_LX2_0              1
 104 #define XTHAL_HW_REL_LX2_0_0            1
 105 #define XCHAL_HW_CONFIGID_RELIABLE      1
 106 /*  If software targets a *range* of hardware versions, these are the bounds: */
 107 #define XCHAL_HW_MIN_VERSION_MAJOR      2200    /* major v of earliest tgt hw */
 108 #define XCHAL_HW_MIN_VERSION_MINOR      0       /* minor v of earliest tgt hw */
 109 #define XCHAL_HW_MAX_VERSION_MAJOR      2200    /* major v of latest tgt hw */
 110 #define XCHAL_HW_MAX_VERSION_MINOR      0       /* minor v of latest tgt hw */
 111
 112
 113 /*----------------------------------------------------------------------
 114                                 CACHE
 115   ----------------------------------------------------------------------*/
 116
 117 #define XCHAL_ICACHE_LINESIZE           16      /* I-cache line size in bytes */
 118 #define XCHAL_DCACHE_LINESIZE           16      /* D-cache line size in bytes */
 119 #define XCHAL_ICACHE_LINEWIDTH          4       /* log2(I line size in bytes) */
 120 #define XCHAL_DCACHE_LINEWIDTH          4       /* log2(D line size in bytes) */
 121
 122 #define XCHAL_ICACHE_SIZE               8192    /* I-cache size in bytes or 0 */
 123 #define XCHAL_DCACHE_SIZE               8192    /* D-cache size in bytes or 0 */
 124
 125 #define XCHAL_DCACHE_IS_WRITEBACK       0       /* writeback feature */
 126
 127
 128
 129
 130 /****************************************************************************
 131     Parameters Useful for PRIVILEGED (Supervisory or Non-Virtualized) Code
 132  ****************************************************************************/
 133
 134
 135 #ifndef XTENSA_HAL_NON_PRIVILEGED_ONLY
 136
 137 /*----------------------------------------------------------------------
 138                                 CACHE
 139   ----------------------------------------------------------------------*/
 140
 141 #define XCHAL_HAVE_PIF                  1       /* any outbound PIF present */
 142
 143 /*  If present, cache size in bytes == (ways * 2^(linewidth + setwidth)).  */
 144
 145 /*  Number of cache sets in log2(lines per way):  */
 146 #define XCHAL_ICACHE_SETWIDTH           8
 147 #define XCHAL_DCACHE_SETWIDTH           8
 148
 149 /*  Cache set associativity (number of ways):  */
 150 #define XCHAL_ICACHE_WAYS               2
 151 #define XCHAL_DCACHE_WAYS               2
 152
 153 /*  Cache features:  */
 154 #define XCHAL_ICACHE_LINE_LOCKABLE      0
 155 #define XCHAL_DCACHE_LINE_LOCKABLE      0
 156 #define XCHAL_ICACHE_ECC_PARITY         0
 157 #define XCHAL_DCACHE_ECC_PARITY         0
 158
 159 /*  Number of encoded cache attr bits (see <xtensa/hal.h> for decoded bits):  */
 160 #define XCHAL_CA_BITS                   4
 161
 162
 163 /*----------------------------------------------------------------------
 164                         INTERNAL I/D RAM/ROMs and XLMI
 165   ----------------------------------------------------------------------*/
 166
 167 #define XCHAL_NUM_INSTROM               0       /* number of core instr. ROMs */
 168 #define XCHAL_NUM_INSTRAM               0       /* number of core instr. RAMs */
 169 #define XCHAL_NUM_DATAROM               0       /* number of core data ROMs */
 170 #define XCHAL_NUM_DATARAM               0       /* number of core data RAMs */
 171 #define XCHAL_NUM_URAM                  0       /* number of core unified RAMs*/
 172 #define XCHAL_NUM_XLMI                  0       /* number of core XLMI ports */
 173
 174
 175 /*----------------------------------------------------------------------
 176                         INTERRUPTS and TIMERS
 177   ----------------------------------------------------------------------*/
 178
 179 #define XCHAL_HAVE_INTERRUPTS           1       /* interrupt option */
 180 #define XCHAL_HAVE_HIGHPRI_INTERRUPTS   1       /* med/high-pri. interrupts */
 181 #define XCHAL_HAVE_NMI                  0       /* non-maskable interrupt */
 182 #define XCHAL_HAVE_CCOUNT               1       /* CCOUNT reg. (timer option) */
 183 #define XCHAL_NUM_TIMERS                3       /* number of CCOMPAREn regs */
 184 #define XCHAL_NUM_INTERRUPTS            17      /* number of interrupts */
 185 #define XCHAL_NUM_INTERRUPTS_LOG2       5       /* ceil(log2(NUM_INTERRUPTS)) */
 186 #define XCHAL_NUM_EXTINTERRUPTS         10      /* num of external interrupts */
 187 #define XCHAL_NUM_INTLEVELS             4       /* number of interrupt levels
 188                                                    (not including level zero) */
 189 #define XCHAL_EXCM_LEVEL                1       /* level masked by PS.EXCM */
 190         /* (always 1 in XEA1; levels 2 .. EXCM_LEVEL are "medium priority") */
 191
 192 /*  Masks of interrupts at each interrupt level:  */
 193 #define XCHAL_INTLEVEL1_MASK            0x000064F9
 194 #define XCHAL_INTLEVEL2_MASK            0x00008902
 195 #define XCHAL_INTLEVEL3_MASK            0x00011204
 196 #define XCHAL_INTLEVEL4_MASK            0x00000000
 197 #define XCHAL_INTLEVEL5_MASK            0x00000000
 198 #define XCHAL_INTLEVEL6_MASK            0x00000000
 199 #define XCHAL_INTLEVEL7_MASK            0x00000000
 200
 201 /*  Masks of interrupts at each range 1..n of interrupt levels:  */
 202 #define XCHAL_INTLEVEL1_ANDBELOW_MASK   0x000064F9
 203 #define XCHAL_INTLEVEL2_ANDBELOW_MASK   0x0000EDFB
 204 #define XCHAL_INTLEVEL3_ANDBELOW_MASK   0x0001FFFF
 205 #define XCHAL_INTLEVEL4_ANDBELOW_MASK   0x0001FFFF
 206 #define XCHAL_INTLEVEL5_ANDBELOW_MASK   0x0001FFFF
 207 #define XCHAL_INTLEVEL6_ANDBELOW_MASK   0x0001FFFF
 208 #define XCHAL_INTLEVEL7_ANDBELOW_MASK   0x0001FFFF
 209
 210 /*  Level of each interrupt:  */
 211 #define XCHAL_INT0_LEVEL                1
 212 #define XCHAL_INT1_LEVEL                2
 213 #define XCHAL_INT2_LEVEL                3
 214 #define XCHAL_INT3_LEVEL                1
 215 #define XCHAL_INT4_LEVEL                1
 216 #define XCHAL_INT5_LEVEL                1
 217 #define XCHAL_INT6_LEVEL                1
 218 #define XCHAL_INT7_LEVEL                1
 219 #define XCHAL_INT8_LEVEL                2
 220 #define XCHAL_INT9_LEVEL                3
 221 #define XCHAL_INT10_LEVEL               1
 222 #define XCHAL_INT11_LEVEL               2
 223 #define XCHAL_INT12_LEVEL               3
 224 #define XCHAL_INT13_LEVEL               1
 225 #define XCHAL_INT14_LEVEL               1
 226 #define XCHAL_INT15_LEVEL               2
 227 #define XCHAL_INT16_LEVEL               3
 228 #define XCHAL_DEBUGLEVEL                4       /* debug interrupt level */
 229 #define XCHAL_HAVE_DEBUG_EXTERN_INT     0       /* OCD external db interrupt */
 230
 231 /*  Type of each interrupt:  */
 232 #define XCHAL_INT0_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
 233 #define XCHAL_INT1_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
 234 #define XCHAL_INT2_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
 235 #define XCHAL_INT3_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
 236 #define XCHAL_INT4_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
 237 #define XCHAL_INT5_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
 238 #define XCHAL_INT6_TYPE         XTHAL_INTTYPE_EXTERN_LEVEL
 239 #define XCHAL_INT7_TYPE         XTHAL_INTTYPE_EXTERN_EDGE
 240 #define XCHAL_INT8_TYPE         XTHAL_INTTYPE_EXTERN_EDGE
 241 #define XCHAL_INT9_TYPE         XTHAL_INTTYPE_EXTERN_EDGE
 242 #define XCHAL_INT10_TYPE        XTHAL_INTTYPE_TIMER
 243 #define XCHAL_INT11_TYPE        XTHAL_INTTYPE_TIMER
 244 #define XCHAL_INT12_TYPE        XTHAL_INTTYPE_TIMER
 245 #define XCHAL_INT13_TYPE        XTHAL_INTTYPE_SOFTWARE
 246 #define XCHAL_INT14_TYPE        XTHAL_INTTYPE_SOFTWARE
 247 #define XCHAL_INT15_TYPE        XTHAL_INTTYPE_SOFTWARE
 248 #define XCHAL_INT16_TYPE        XTHAL_INTTYPE_SOFTWARE
 249
 250 /*  Masks of interrupts for each type of interrupt:  */
 251 #define XCHAL_INTTYPE_MASK_UNCONFIGURED 0xFFFE0000
 252 #define XCHAL_INTTYPE_MASK_SOFTWARE     0x0001E000
 253 #define XCHAL_INTTYPE_MASK_EXTERN_EDGE  0x00000380
 254 #define XCHAL_INTTYPE_MASK_EXTERN_LEVEL 0x0000007F
 255 #define XCHAL_INTTYPE_MASK_TIMER        0x00001C00
 256 #define XCHAL_INTTYPE_MASK_NMI          0x00000000
 257 #define XCHAL_INTTYPE_MASK_WRITE_ERROR  0x00000000
 258
 259 /*  Interrupt numbers assigned to specific interrupt sources:  */
 260 #define XCHAL_TIMER0_INTERRUPT          10      /* CCOMPARE0 */
 261 #define XCHAL_TIMER1_INTERRUPT          11      /* CCOMPARE1 */
 262 #define XCHAL_TIMER2_INTERRUPT          12      /* CCOMPARE2 */
 263 #define XCHAL_TIMER3_INTERRUPT          XTHAL_TIMER_UNCONFIGURED
 264
 265 /*  Interrupt numbers for levels at which only one interrupt is configured:  */
 266 /*  (There are many interrupts each at level(s) 1, 2, 3.)  */
 267
 268
 269 /*
 270  *  External interrupt vectors/levels.
 271  *  These macros describe how Xtensa processor interrupt numbers
 272  *  (as numbered internally, eg. in INTERRUPT and INTENABLE registers)
 273  *  map to external BInterrupt<n> pins, for those interrupts
 274  *  configured as external (level-triggered, edge-triggered, or NMI).
 275  *  See the Xtensa processor databook for more details.
 276  */
 277
 278 /*  Core interrupt numbers mapped to each EXTERNAL interrupt number:  */
 279 #define XCHAL_EXTINT0_NUM               0       /* (intlevel 1) */
 280 #define XCHAL_EXTINT1_NUM               1       /* (intlevel 2) */
 281 #define XCHAL_EXTINT2_NUM               2       /* (intlevel 3) */
 282 #define XCHAL_EXTINT3_NUM               3       /* (intlevel 1) */
 283 #define XCHAL_EXTINT4_NUM               4       /* (intlevel 1) */
 284 #define XCHAL_EXTINT5_NUM               5       /* (intlevel 1) */
 285 #define XCHAL_EXTINT6_NUM               6       /* (intlevel 1) */
 286 #define XCHAL_EXTINT7_NUM               7       /* (intlevel 1) */
 287 #define XCHAL_EXTINT8_NUM               8       /* (intlevel 2) */
 288 #define XCHAL_EXTINT9_NUM               9       /* (intlevel 3) */
 289
 290
 291 /*----------------------------------------------------------------------
 292                         EXCEPTIONS and VECTORS
 293   ----------------------------------------------------------------------*/
 294
 295 #define XCHAL_XEA_VERSION               2       /* Xtensa Exception Architecture
 296                                                    number: 1 == XEA1 (old)
 297                                                            2 == XEA2 (new)
 298                                                            0 == XEAX (extern) */
 299 #define XCHAL_HAVE_XEA1                 0       /* Exception Architecture 1 */
 300 #define XCHAL_HAVE_XEA2                 1       /* Exception Architecture 2 */
 301 #define XCHAL_HAVE_XEAX                 0       /* External Exception Arch. */
 302 #define XCHAL_HAVE_EXCEPTIONS           1       /* exception option */
 303 #define XCHAL_HAVE_MEM_ECC_PARITY       0       /* local memory ECC/parity */
 304
 305 #define XCHAL_RESET_VECTOR_VADDR        0xFE000020
 306 #define XCHAL_RESET_VECTOR_PADDR        0xFE000020
 307 #define XCHAL_USER_VECTOR_VADDR         0xD0000220
 308 #define XCHAL_USER_VECTOR_PADDR         0x00000220
 309 #define XCHAL_KERNEL_VECTOR_VADDR       0xD0000200
 310 #define XCHAL_KERNEL_VECTOR_PADDR       0x00000200
 311 #define XCHAL_DOUBLEEXC_VECTOR_VADDR    0xD0000290
 312 #define XCHAL_DOUBLEEXC_VECTOR_PADDR    0x00000290
 313 #define XCHAL_WINDOW_VECTORS_VADDR      0xD0000000
 314 #define XCHAL_WINDOW_VECTORS_PADDR      0x00000000
 315 #define XCHAL_INTLEVEL2_VECTOR_VADDR    0xD0000240
 316 #define XCHAL_INTLEVEL2_VECTOR_PADDR    0x00000240
 317 #define XCHAL_INTLEVEL3_VECTOR_VADDR    0xD0000250
 318 #define XCHAL_INTLEVEL3_VECTOR_PADDR    0x00000250
 319 #define XCHAL_INTLEVEL4_VECTOR_VADDR    0xFE000520
 320 #define XCHAL_INTLEVEL4_VECTOR_PADDR    0xFE000520
 321 #define XCHAL_DEBUG_VECTOR_VADDR        XCHAL_INTLEVEL4_VECTOR_VADDR
 322 #define XCHAL_DEBUG_VECTOR_PADDR        XCHAL_INTLEVEL4_VECTOR_PADDR
 323
 324
 325 /*----------------------------------------------------------------------
 326                                 DEBUG
 327   ----------------------------------------------------------------------*/
 328
 329 #define XCHAL_HAVE_OCD                  1       /* OnChipDebug option */
 330 #define XCHAL_NUM_IBREAK                2       /* number of IBREAKn regs */
 331 #define XCHAL_NUM_DBREAK                2       /* number of DBREAKn regs */
 332 #define XCHAL_HAVE_OCD_DIR_ARRAY        1       /* faster OCD option */
 333
 334
 335 /*----------------------------------------------------------------------
 336                                 MMU
 337   ----------------------------------------------------------------------*/
 338
 339 /*  See <xtensa/config/core-matmap.h> header file for more details.  */
 340
 341 #define XCHAL_HAVE_TLBS                 1       /* inverse of HAVE_CACHEATTR */
 342 #define XCHAL_HAVE_SPANNING_WAY         0       /* one way maps I+D 4GB vaddr */
 343 #define XCHAL_HAVE_IDENTITY_MAP         0       /* vaddr == paddr always */
 344 #define XCHAL_HAVE_CACHEATTR            0       /* CACHEATTR register present */
 345 #define XCHAL_HAVE_MIMIC_CACHEATTR      0       /* region protection */
 346 #define XCHAL_HAVE_XLT_CACHEATTR        0       /* region prot. w/translation */
 347 #define XCHAL_HAVE_PTP_MMU              1       /* full MMU (with page table
 348                                                    [autorefill] and protection)
 349                                                    usable for an MMU-based OS */
 350 /*  If none of the above last 4 are set, it's a custom TLB configuration.  */
 351 #define XCHAL_ITLB_ARF_ENTRIES_LOG2     2       /* log2(autorefill way size) */
 352 #define XCHAL_DTLB_ARF_ENTRIES_LOG2     2       /* log2(autorefill way size) */
 353
 354 #define XCHAL_MMU_ASID_BITS             8       /* number of bits in ASIDs */
 355 #define XCHAL_MMU_RINGS                 4       /* number of rings (1..4) */
 356 #define XCHAL_MMU_RING_BITS             2       /* num of bits in RING field */
 357
 358 #endif /* !XTENSA_HAL_NON_PRIVILEGED_ONLY */
 359
 360
 361 #endif /* _XTENSA_CORE_CONFIGURATION_H */