Kerry Sheh | e8689ed | 2012-01-20 13:57:48 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Advanced Micro Devices, Inc. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * * Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * * Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * * Neither the name of Advanced Micro Devices, Inc. nor the names of |
| 13 | * its contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 19 | * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY |
| 20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | * |
| 27 | */ |
| 28 | |
| 29 | /****************************************************************************** |
| 30 | * AMD Generic Encapsulated Software Architecture |
| 31 | * |
| 32 | * $Workfile:: GccCar.inc $Revision:: 32932 $ |
| 33 | * |
| 34 | * Description: GccCar.inc - AGESA cache-as-RAM setup Include File for GCC complier |
| 35 | * |
| 36 | ******************************************************************************/ |
| 37 | |
| 38 | .altmacro |
| 39 | |
| 40 | BSP_STACK_BASE_ADDR = 0x30000 /* Base address for primary cores stack */ |
| 41 | BSP_STACK_SIZE = 0x10000 /* 64KB for BSP core */ |
| 42 | CORE0_STACK_BASE_ADDR = 0x80000 /* Base address for primary cores stack */ |
| 43 | CORE0_STACK_SIZE = 0x4000 /* 16KB for primary cores */ |
| 44 | CORE1_STACK_BASE_ADDR = 0x40000 /* Base address for AP cores */ |
| 45 | CORE1_STACK_SIZE = 0x1000 /* 4KB for each AP cores */ |
| 46 | |
| 47 | APIC_BASE_ADDRESS = 0x0000001B |
| 48 | APIC_BSC = 8 /* Boot Strap Core */ |
| 49 | |
| 50 | AMD_MTRR_VARIABLE_BASE0 = 0x0200 |
| 51 | AMD_MTRR_VARIABLE_BASE6 = 0x020C |
Kostr | 335450d | 2012-10-08 22:04:53 +0400 | [diff] [blame^] | 52 | AMD_MTRR_VARIABLE_MASK7 = 0x020F |
Kerry Sheh | e8689ed | 2012-01-20 13:57:48 +0800 | [diff] [blame] | 53 | AMD_MTRR_FIX64k_00000 = 0x0250 |
| 54 | AMD_MTRR_FIX16k_80000 = 0x0258 |
| 55 | AMD_MTRR_FIX16k_A0000 = 0x0259 |
| 56 | AMD_MTRR_FIX4k_C0000 = 0x0268 |
| 57 | AMD_MTRR_FIX4k_C8000 = 0x0269 |
| 58 | AMD_MTRR_FIX4k_D0000 = 0x026A |
| 59 | AMD_MTRR_FIX4k_D8000 = 0x026B |
| 60 | AMD_MTRR_FIX4k_E0000 = 0x026C |
| 61 | AMD_MTRR_FIX4k_E8000 = 0x026D |
| 62 | AMD_MTRR_FIX4k_F0000 = 0x026E |
| 63 | AMD_MTRR_FIX4k_F8000 = 0x026F |
| 64 | |
Kostr | 335450d | 2012-10-08 22:04:53 +0400 | [diff] [blame^] | 65 | /* Reproduced from AGESA.h */ |
| 66 | AMD_AP_MTRR_FIX64k_00000 = 0x00000250 |
| 67 | AMD_AP_MTRR_FIX16k_80000 = 0x00000258 |
| 68 | AMD_AP_MTRR_FIX16k_A0000 = 0x00000259 |
| 69 | AMD_AP_MTRR_FIX4k_C0000 = 0x00000268 |
| 70 | AMD_AP_MTRR_FIX4k_C8000 = 0x00000269 |
| 71 | AMD_AP_MTRR_FIX4k_D0000 = 0x0000026A |
| 72 | AMD_AP_MTRR_FIX4k_D8000 = 0x0000026B |
| 73 | AMD_AP_MTRR_FIX4k_E0000 = 0x0000026C |
| 74 | AMD_AP_MTRR_FIX4k_E8000 = 0x0000026D |
| 75 | AMD_AP_MTRR_FIX4k_F0000 = 0x0000026E |
| 76 | AMD_AP_MTRR_FIX4k_F8000 = 0x0000026F |
| 77 | CPU_LIST_TERMINAL = 0xFFFFFFFF |
| 78 | |
Kerry Sheh | e8689ed | 2012-01-20 13:57:48 +0800 | [diff] [blame] | 79 | AMD_MTRR_DEFTYPE = 0x02FF |
| 80 | WB_DRAM_TYPE = 0x1E /* MemType - memory type */ |
| 81 | MTRR_DEF_TYPE_EN = 11 /* MtrrDefTypeEn - variable and fixed MTRRs default enabled */ |
| 82 | MTRR_DEF_TYPE_FIX_EN = 10 /* MtrrDefTypeEn - fixed MTRRs default enabled */ |
| 83 | |
| 84 | HWCR = 0x0C0010015 /* Hardware Configuration */ |
| 85 | INVD_WBINVD = 0x04 /* INVD to WBINVD conversion */ |
| 86 | |
| 87 | IORR_BASE = 0x0C0010016 /* IO Range Regusters Base/Mask, 2 pairs */ |
| 88 | /* uses 16h - 19h */ |
| 89 | TOP_MEM = 0x0C001001A /* Top of Memory */ |
| 90 | TOP_MEM2 = 0x0C001001D /* Top of Memory2 */ |
| 91 | |
| 92 | LS_CFG = 0x0C0011020 /* Load-Store Configuration */ |
| 93 | DIS_SS = 28 /* Family 10h,12h,15h:Disable Streng Store functionality */ |
| 94 | DIS_STREAM_ST = 28 /* Family 14h:DisStreamSt - Disable Streaming Store functionality */ |
| 95 | |
| 96 | IC_CFG = 0x0C0011021 /* Instruction Cache Config Register */ |
| 97 | IC_DIS_SPEC_TLB_RLD = 9 /* Disable speculative TLB reloads */ |
| 98 | DIS_IND = 14 /* Family 10-14h:Disable Indirect Branch Predictor */ |
| 99 | DIS_I_CACHE = 14 /* Family 15h:DisICache - Disable Indirect Branch Predictor */ |
| 100 | |
| 101 | DC_CFG = 0x0C0011022 /* Data Cache Configuration */ |
| 102 | DC_DIS_SPEC_TLB_RLD = 4 /* Disable speculative TLB reloads */ |
| 103 | DIS_CLR_WBTOL2_SMC_HIT = 8 /* self modifying code check buffer bit */ |
| 104 | DIS_HW_PF = 13 /* Hardware prefetches bit */ |
| 105 | |
| 106 | DE_CFG = 0x0C0011029 /* Decode Configuration */ |
| 107 | CL_FLUSH_SERIALIZE = 23 /* Family 12h,15h: CL Flush Serialization */ |
| 108 | |
| 109 | BU_CFG2 = 0x0C001102A /* Family 10h: Bus Unit Configuration 2 */ |
| 110 | CU_CFG2 = 0x0C001102A /* Family 15h: Combined Unit Configuration 2 */ |
| 111 | F10_CL_LINES_TO_NB_DIS = 15 /* ClLinesToNbDis - allows WP code to be cached in L2 */ |
| 112 | IC_DIS_SPEC_TLB_WR = 35 /* IcDisSpecTlbWr - ITLB speculative writes */ |
| 113 | |
| 114 | CU_CFG3 = 0x0C001102B /* Combined Unit Configuration 3 */ |
| 115 | COMBINE_CR0_CD = 49 /* Combine CR0.CD for both cores of a compute unit */ |
| 116 | |
| 117 | |
| 118 | CR0_PE = 1 # Protection Enable |
| 119 | CR0_NW = 29 # Not Write-through |
| 120 | CR0_CD = 30 # Cache Disable |
| 121 | CR0_PG = 31 # Paging Enable |
| 122 | |
| 123 | /* CPUID Functions */ |
| 124 | |
| 125 | CPUID_MODEL = 1 |
| 126 | AMD_CPUID_FMF = 0x80000001 /* Family Model Features information */ |
| 127 | AMD_CPUID_APIC = 0x80000008 /* Long Mode and APIC info., core count */ |
| 128 | |
| 129 | NB_CFG = 0x0C001001F /* Northbridge Configuration Register */ |
| 130 | INIT_APIC_ID_CPU_ID_LO = 54 /* InitApicIdCpuIdLo - is core# in high or low half of APIC ID? */ |
| 131 | |
| 132 | MTRR_SYS_CFG = 0x0C0010010 /* System Configuration Register */ |
| 133 | CHX_TO_DIRTY_DIS = 16 /* ChxToDirtyDis Change to dirty disable */ |
| 134 | SYS_UC_LOCK_EN = 17 /* SysUcLockEn System lock command enable */ |
| 135 | MTRR_FIX_DRAM_EN = 18 /* MtrrFixDramEn MTRR fixed RdDram and WrDram attributes enable */ |
| 136 | MTRR_FIX_DRAM_MOD_EN = 19 /* MtrrFixDramModEn MTRR fixed RdDram and WrDram modification enable */ |
| 137 | MTRR_VAR_DRAM_EN = 20 /* MtrrVarDramEn MTRR variable DRAM enable */ |
| 138 | MTRR_TOM2_EN = 21 /* MtrrTom2En MTRR top of memory 2 enable */ |
| 139 | |
| 140 | PERF_CONTROL3 = 0x0C0010003 /* Performance event control three */ |
| 141 | PERF_CONTROL3_RESERVE_L = 0x00200000 /* Preserve the reserved bits */ |
| 142 | PERF_CONTROL3_RESERVE_H = 0x0FCF0 /* Preserve the reserved bits */ |
| 143 | CONFIG_EVENT_L = 0x0F0E2 /* All cores with level detection */ |
| 144 | CONFIG_EVENT_H = 4 /* Increment count by number of event */ |
| 145 | /* occured in clock cycle */ |
| 146 | EVENT_ENABLE = 22 /* Enable the event */ |
| 147 | PERF_COUNTER3 = 0x0C0010007 /* Performance event counter three */ |
| 148 | |
| 149 | # Local use flags, in upper most byte if ESI |
| 150 | FLAG_UNKNOWN_FAMILY = 24 # Signals that the family# of the installed processor is not recognized |
| 151 | FLAG_STACK_REENTRY = 25 # Signals that the environment has made a re-entry (2nd) call to set up the stack |
| 152 | FLAG_IS_PRIMARY = 26 # Signals that this core is the primary within the comoute unit |
| 153 | |
| 154 | CR0_MASK = ((1 << CR0_CD) | (1 << CR0_NW)) |
| 155 | MSR_MASK = ((1 << MTRR_DEF_TYPE_EN)+(1 << MTRR_DEF_TYPE_FIX_EN)) |
| 156 | |
| 157 | /**************************************************************************** |
| 158 | * |
| 159 | * CPU MACROS - PUBLIC |
| 160 | * |
| 161 | ****************************************************************************/ |
| 162 | .macro _WRMSR |
| 163 | .byte 0x0f, 0x30 |
| 164 | .endm |
| 165 | |
| 166 | .macro _RDMSR |
| 167 | .byte 0x0F, 0x32 |
| 168 | .endm |
| 169 | |
| 170 | .macro AMD_CPUID arg0 |
| 171 | .ifb \arg0 |
| 172 | mov $0x1, %eax |
| 173 | .byte 0x0F, 0x0A2 /* Execute instruction */ |
| 174 | bswap %eax |
| 175 | xchg %ah, %al /* Ext model in al now */ |
| 176 | rol $0x08, %eax /* Ext model in ah, model in al */ |
| 177 | and $0x0FFCF, ax /* Keep 23:16, 7:6, 3:0 */ |
| 178 | .else |
| 179 | mov \arg0, %eax |
| 180 | .byte 0x0F, 0x0A2 |
| 181 | .endif |
| 182 | .endm |
| 183 | |
| 184 | /**************************************************************************** |
| 185 | * |
| 186 | * AMD_ENABLE_STACK_FAMILY_HOOK Macro - Stackless |
| 187 | * |
| 188 | * Set any family specific controls needed to enable the use of |
| 189 | * cache as general storage before main memory is available. |
| 190 | * |
| 191 | * Inputs: |
| 192 | * none |
| 193 | * Outputs: |
| 194 | * none |
| 195 | ****************************************************************************/ |
| 196 | .macro AMD_ENABLE_STACK_FAMILY_HOOK |
| 197 | |
| 198 | AMD_ENABLE_STACK_FAMILY_HOOK_F10 |
| 199 | AMD_ENABLE_STACK_FAMILY_HOOK_F12 |
| 200 | AMD_ENABLE_STACK_FAMILY_HOOK_F14 |
| 201 | AMD_ENABLE_STACK_FAMILY_HOOK_F15 |
| 202 | .endm |
| 203 | |
| 204 | /**************************************************************************** |
| 205 | * |
| 206 | * AMD_DISABLE_STACK_FAMILY_HOOK Macro - Stackless |
| 207 | * |
| 208 | * Return any family specific controls to their 'standard' |
| 209 | * settings for using cache with main memory. |
| 210 | * |
| 211 | * Inputs: |
| 212 | * none |
| 213 | * Outputs: |
| 214 | * none |
| 215 | ****************************************************************************/ |
| 216 | .macro AMD_DISABLE_STACK_FAMILY_HOOK |
| 217 | |
| 218 | AMD_DISABLE_STACK_FAMILY_HOOK_F10 |
| 219 | AMD_DISABLE_STACK_FAMILY_HOOK_F12 |
| 220 | AMD_DISABLE_STACK_FAMILY_HOOK_F14 |
| 221 | AMD_DISABLE_STACK_FAMILY_HOOK_F15 |
| 222 | |
| 223 | .endm |
| 224 | |
| 225 | /**************************************************************************** |
| 226 | * |
| 227 | * GET_NODE_ID_CORE_ID Macro - Stackless |
| 228 | * |
| 229 | * Read family specific values to determine the node and core |
| 230 | * numbers for the core executing this code. |
| 231 | * |
| 232 | * Inputs: |
| 233 | * none |
| 234 | * Outputs: |
| 235 | * SI[7:0] = Core# (0..N, relative to node) |
| 236 | * SI[15:8]= Node# (0..N) |
| 237 | * SI[23:16]= reserved |
| 238 | * SI[24]= flag: 1=Family Unrecognized |
| 239 | * SI[25]= flag: 1=Interface re-entry call |
| 240 | * SI[26]= flag: 1=Core is primary of compute unit |
| 241 | * SI[31:27]= reserved, =0 |
| 242 | ****************************************************************************/ |
| 243 | .macro GET_NODE_ID_CORE_ID |
| 244 | LOCAL node_core_exit |
| 245 | |
| 246 | mov $-1, %si |
| 247 | GET_NODE_ID_CORE_ID_F10 |
| 248 | GET_NODE_ID_CORE_ID_F12 |
| 249 | GET_NODE_ID_CORE_ID_F14 |
| 250 | GET_NODE_ID_CORE_ID_F15 |
| 251 | /* |
| 252 | * Check for unrecognized Family |
| 253 | */ |
| 254 | cmp $-1, %si # Has family (node/core) already been discovered? |
| 255 | jnz node_core_exit # Br if yes |
| 256 | |
| 257 | mov $((1 << FLAG_UNKNOWN_FAMILY)+(1 << FLAG_IS_PRIMARY)), %esi # No, Set error code, Only let BSP continue |
| 258 | |
| 259 | mov $APIC_BASE_ADDRESS, %ecx # MSR:0000_001B |
| 260 | _RDMSR |
| 261 | bt $APIC_BSC, %eax # Is this the BSC? |
| 262 | jc node_core_exit # Br if yes |
| 263 | hlt # Kill APs |
| 264 | node_core_exit: |
| 265 | |
| 266 | .endm |
| 267 | |
| 268 | /**************************************************************************** |
| 269 | ## Family 10h MACROS |
| 270 | ##*************************************************************************** |
| 271 | #--------------------------------------------------- |
| 272 | # |
| 273 | # AMD_ENABLE_STACK_FAMILY_HOOK_F10 Macro - Stackless |
| 274 | # |
| 275 | # Set any family specific controls needed to enable the use of |
| 276 | # cache as general storage before main memory is available. |
| 277 | # |
| 278 | # Inputs: |
| 279 | # ESI - node#, core#, flags from GET_NODE_ID_CORE_ID |
| 280 | # Outputs: |
| 281 | # none |
| 282 | # |
| 283 | # Family 10h requirements (BKDG section 2.3.3): |
| 284 | # * Paging disabled |
| 285 | # * MSRC001_0015[INVDWBINVD]=0 |
| 286 | # * MSRC001_1021[DIS_IND]=1 |
| 287 | # * MSRC001_1021[DIS_SPEC_TLB_RLD]=1 |
| 288 | # * MSRC001_1022[DIS_SPEC_TLB_RLD]=1 |
| 289 | # * MSRC001_1022[DIS_CLR_WBTOL2_SMC_HIT]=1 |
| 290 | # * MSRC001_1022[DIS_HW_PF]=1 |
| 291 | # * MSRC001_102A[IcDisSpecTlbWr]=1 |
| 292 | # * MSRC001_102A[ClLinesToNbDis]=1 |
| 293 | # * No INVD or WBINVD, no exceptions, page faults or interrupts |
| 294 | ****************************************************************************/ |
| 295 | .macro AMD_ENABLE_STACK_FAMILY_HOOK_F10 |
| 296 | LOCAL fam10_enable_stack_hook_exit |
| 297 | |
| 298 | AMD_CPUID $CPUID_MODEL |
| 299 | shr $20, %eax # AL = cpu extended family |
| 300 | cmp $0x01, %al # Is this family 10h? |
| 301 | jnz fam10_enable_stack_hook_exit # Br if no |
| 302 | |
| 303 | mov $DC_CFG, %ecx # MSR:C001_1022 |
| 304 | _RDMSR |
| 305 | bts $DC_DIS_SPEC_TLB_RLD, %eax # Turn on Disable speculative DTLB reloads bit |
| 306 | bts $DIS_CLR_WBTOL2_SMC_HIT, %eax # Turn on Disable the self modifying code check buffer bit |
| 307 | bts $DIS_HW_PF, %eax # Turn on Disable hardware prefetches bit |
| 308 | _WRMSR |
| 309 | |
| 310 | dec %cx # MSR:C001_1021 |
| 311 | _RDMSR |
| 312 | bts $IC_DIS_SPEC_TLB_RLD, %eax # Turn on Disable speculative TLB reloads bit |
| 313 | bts $DIS_IND, %eax # Turn on Disable indirect branch predictor |
| 314 | _WRMSR |
| 315 | |
| 316 | mov $BU_CFG2, %ecx # MSR C001_102A |
| 317 | _RDMSR |
| 318 | bts $F10_CL_LINES_TO_NB_DIS, %eax # Allow BIOS ROM to be cached in the IC |
| 319 | bts $(IC_DIS_SPEC_TLB_WR-32), %edx #Disable speculative writes to the ITLB |
| 320 | _WRMSR |
| 321 | |
| 322 | mov $HWCR, %ecx # MSR C001_0015 |
| 323 | _RDMSR |
| 324 | bt $FLAG_STACK_REENTRY, %esi # Check if stack has already been set |
| 325 | jc fam10_skipClearingBit4 |
| 326 | btr $INVD_WBINVD, %eax # disable INVD -> WBINVD conversion |
| 327 | _WRMSR |
| 328 | |
| 329 | fam10_skipClearingBit4: |
| 330 | mov %esi, %eax # load core# |
| 331 | or %al, %al # If (BSP) |
| 332 | jne fam10_enable_stack_hook_exit |
| 333 | mov $PERF_COUNTER3, %ecx # Select performance counter three |
| 334 | # to count number of CAR evictions |
| 335 | xor %eax, %eax # Initialize the lower part of the counter to zero |
| 336 | xor %edx, %edx # Initializa the upper part of the counter to zero |
| 337 | _WRMSR # Save it |
| 338 | mov $PERF_CONTROL3, %ecx # Select the event control three |
| 339 | _RDMSR # Get the current setting |
| 340 | and $PERF_CONTROL3_RESERVE_L, %eax # Preserve the reserved bits |
| 341 | or $CONFIG_EVENT_L, %eax # Set the lower part of event register to |
| 342 | # select CAR Corruption occurred by any cores |
| 343 | and $PERF_CONTROL3_RESERVE_H, %dx # Preserve the reserved bits |
| 344 | or $CONFIG_EVENT_H, %dx # Set the upper part of event register |
| 345 | _WRMSR # Save it |
| 346 | bts $EVENT_ENABLE, %eax # Enable it |
| 347 | _WRMSR # Save it |
| 348 | |
| 349 | fam10_enable_stack_hook_exit: |
| 350 | .endm |
| 351 | |
| 352 | /**************************************************************************** |
| 353 | * |
| 354 | * AMD_DISABLE_STACK_FAMILY_HOOK_F10 Macro - Stackless |
| 355 | * |
| 356 | * Return any family specific controls to their 'standard' |
| 357 | * settings for using cache with main memory. |
| 358 | * |
| 359 | * Inputs: |
| 360 | * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# |
| 361 | * Outputs: |
| 362 | * none |
| 363 | * |
| 364 | * Family 10h requirements: |
| 365 | * * INVD or WBINVD |
| 366 | * * MSRC001_0015[INVD_WBINVD]=1 |
| 367 | * * MSRC001_1021[DIS_IND]=0 |
| 368 | * * MSRC001_1021[DIS_SPEC_TLB_RLD]=0 |
| 369 | * * MSRC001_1022[DIS_SPEC_TLB_RLD]=0 |
| 370 | * * MSRC001_1022[DIS_CLR_WBTOL2_SMC_HIT]=0 |
| 371 | * * MSRC001_1022[DIS_HW_PF]=0 |
| 372 | * * MSRC001_102A[IcDisSpecTlbWr]=0 |
| 373 | * * MSRC001_102A[ClLinesToNbDis]=0 |
| 374 | *****************************************************************************/ |
| 375 | |
| 376 | .macro AMD_DISABLE_STACK_FAMILY_HOOK_F10 |
| 377 | LOCAL fam10_disable_stack_hook_exit |
| 378 | |
| 379 | AMD_CPUID $CPUID_MODEL |
| 380 | shr $20, %eax # AL = cpu extended family |
| 381 | cmp $0x01, %al # Is this family 10h? |
| 382 | jnz fam10_disable_stack_hook_exit # Br if no |
| 383 | |
| 384 | mov $DC_CFG, %ecx # MSR:C001_1022 |
| 385 | _RDMSR |
| 386 | btr $DC_DIS_SPEC_TLB_RLD, %eax # Enable speculative TLB reloads |
| 387 | btr $DIS_CLR_WBTOL2_SMC_HIT, %eax # Allow self modifying code check buffer |
| 388 | btr $DIS_HW_PF, %eax # Allow hardware prefetches |
| 389 | _WRMSR |
| 390 | |
| 391 | dec %cx # MSR:C001_1021 |
| 392 | _RDMSR |
| 393 | btr $DIS_IND, %eax # Turn on indirect branch predictor |
| 394 | btr $IC_DIS_SPEC_TLB_RLD, %eax # Turn on speculative TLB reloads |
| 395 | _WRMSR |
| 396 | |
| 397 | mov $BU_CFG2, %ecx # MSR:C001_102A |
| 398 | _RDMSR |
| 399 | /* |
| 400 | * BTS error if SBIOS `allows WP code to be cached', but copying |
| 401 | * ramstage/payloads from ROM to RAM will be very slow if disable it here. |
| 402 | * |
| 403 | * TODO: disable `allows WP code to be cached' after the ROM to RAM copying. |
| 404 | */ |
| 405 | // btr $F10_CL_LINES_TO_NB_DIS, %eax # Return L3 to normal mode |
| 406 | btr $(IC_DIS_SPEC_TLB_WR-32), %edx #Re-enable speculative writes to the ITLB |
| 407 | _WRMSR |
| 408 | |
| 409 | #-------------------------------------------------------------------------- |
| 410 | # Begin critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 411 | #-------------------------------------------------------------------------- |
| 412 | |
| 413 | mov $HWCR, %ecx # MSR:0000_0015 |
| 414 | _RDMSR |
| 415 | mov %ax, %bx # Save INVD -> WBINVD bit |
| 416 | btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion for the invd instruction. |
| 417 | _WRMSR |
| 418 | wbinvd # Clear the cache tag RAMs |
| 419 | mov %bx, %ax # Restore INVD -> WBINVD bit |
| 420 | _WRMSR |
| 421 | |
| 422 | #-------------------------------------------------------------------------- |
| 423 | # End critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 424 | #-------------------------------------------------------------------------- |
| 425 | |
| 426 | mov $PERF_CONTROL3, %ecx # Select the event control three |
| 427 | _RDMSR # Retrieve the current value |
| 428 | btc $EVENT_ENABLE, %eax # Is event enable, complement it as well |
| 429 | jnc fam10_disable_stack_hook_exit # No |
| 430 | cmp $CONFIG_EVENT_L, %ax # Is the lower part of event set to capture the CAR Corruption |
| 431 | jne fam10_disable_stack_hook_exit # No |
| 432 | cmp $CONFIG_EVENT_H, %dl # Is the upper part of event set to capture the CAR Corruption |
| 433 | jne fam10_disable_stack_hook_exit # No |
| 434 | _WRMSR # Disable the event |
| 435 | |
| 436 | fam10_disable_stack_hook_exit: |
| 437 | .endm |
| 438 | |
| 439 | /**************************************************************************** |
| 440 | * |
| 441 | * GET_NODE_ID_CORE_ID_F10 Macro - Stackless |
| 442 | * |
| 443 | * Read family specific values to determine the node and core |
| 444 | * numbers for the core executing this code. |
| 445 | * |
| 446 | * Inputs: |
| 447 | * none |
| 448 | * Outputs: |
| 449 | * SI = core#, node# & flags (see GET_NODE_ID_CORE_ID macro above) |
| 450 | *****************************************************************************/ |
| 451 | .macro GET_NODE_ID_CORE_ID_F10 |
| 452 | |
| 453 | LOCAL node_core_f10_exit |
| 454 | LOCAL node_core_f10_AP |
| 455 | |
| 456 | cmp $-1, %si # Has node/core already been discovered? |
| 457 | jnz node_core_f10_exit # Br if yes |
| 458 | |
| 459 | AMD_CPUID $CPUID_MODEL |
| 460 | shr $20, %eax # AL = cpu extended family |
| 461 | cmp $0x01, %al # Is this family 10h? |
| 462 | jnz node_core_f10_exit # Br if no |
| 463 | |
| 464 | xor %esi, %esi # Assume BSC, clear flags |
| 465 | mov $APIC_BASE_ADDRESS, %ecx # MSR:0000_001B |
| 466 | _RDMSR |
| 467 | bt $APIC_BSC, %eax # Is this the BSC? |
| 468 | jnc node_core_f10_AP # Br if no |
| 469 | |
| 470 | # This is the BSP. |
| 471 | # Enable routing tables on BSP (just in case the HT init code has not yet enabled them) |
| 472 | mov $0x8000C06C, %eax # PCI address for D18F0x6C Link Initialization Control Register |
| 473 | mov $0x0CF8, %dx |
| 474 | out %eax, %dx |
| 475 | add $4, %dx |
| 476 | in %dx, %eax |
| 477 | btr $0, %eax # Set LinkInitializationControl[RouteTblDis] = 0 |
| 478 | out %eax, %dx |
| 479 | jmp 1f # |
| 480 | |
| 481 | node_core_f10_AP: |
| 482 | # |
| 483 | # This is an AP. Routing tables have been enabled by the HT Init process. |
| 484 | # Also, the MailBox register was set by the BSP during early init |
| 485 | # The Mailbox register content is formatted as follows: |
| 486 | # UINT32 Node:4# // The node id of Core's node. |
| 487 | # UINT32 Socket:4# // The socket of this Core's node. |
| 488 | # UINT32 Module:2# // The internal module number for Core's node. |
| 489 | # UINT32 ModuleType:2# // Single Module = 0, Multi-module = 1. |
| 490 | # UINT32 :20# // Reserved |
| 491 | # |
| 492 | mov $0x0C0000408, %ecx # Read the family 10h mailbox |
| 493 | _RDMSR # MC4_MISC1[63:32] |
| 494 | mov %dx, %si # SI = raw mailbox contents (will extract node# from this) |
| 495 | shr $24, %ebx # BL = CPUID Fn0000_0001_EBX[LocalApicId] |
| 496 | mov %bx, %di # DI = Initial APIC ID (will extract core# from this) |
| 497 | |
| 498 | AMD_CPUID $AMD_CPUID_APIC # |
| 499 | shr $4, %ch # CH = ApicIdSize, #bits in APIC ID that show core# |
| 500 | inc %cl # CL = Number of enabled cores in the socket |
| 501 | mov %cx, %bx |
| 502 | |
| 503 | mov $NB_CFG, %ecx # MSR:C001_001F |
| 504 | _RDMSR # EDX has InitApicIdCpuIdLo bit |
| 505 | |
| 506 | mov %bh, %cl # CL = APIC ID size |
| 507 | mov $1, %al # Convert APIC ID size to an AND mask |
| 508 | shl %cl, %al # AL = 2^APIC ID size |
| 509 | dec %al # AL = mask for relative core number |
| 510 | xor %ah, %ah # AX = mask for relative core number |
| 511 | bt $(INIT_APIC_ID_CPU_ID_LO-32), %edx # InitApicIdCpuIdLo == 1? |
| 512 | #.if (!carry?) # Br if yes |
| 513 | jc 0f |
| 514 | mov $8, %ch # Calculate core number shift count |
| 515 | sub %cl, %ch # CH = core shift count |
| 516 | mov %ch, %cl |
| 517 | shr %cl, %di # Right justify core number |
| 518 | #.endif |
| 519 | 0: |
| 520 | and %ax, %di # DI = socket-relative core number |
| 521 | |
| 522 | mov %si, %cx # CX = raw mailbox value |
| 523 | shr $10, %cx # CL[1:0] = ModuleType or #nodes per socket (0-SCM, 1-MCM) |
| 524 | and $3, %cl # Isolate ModuleType |
| 525 | xor %bh, %bh # BX = Number of enabled cores in the socket |
| 526 | shr %cl, %bx # BX = Number of enabled cores per node |
| 527 | xor %dx, %dx # Clear upper word for div |
| 528 | mov %di, %ax # AX = socket-relative core number |
| 529 | div %bx # DX = node-relative core number |
| 530 | movzx %si, %eax # prepare return value, [23:16]=shared Core# (=0, not shared) |
| 531 | and $0x000F, %ax # AX = node number |
| 532 | shl $8, %ax # [15:8]=node# |
| 533 | mov %dl, %al # [7:0]=core# (relative to node) |
| 534 | mov %eax, %esi # ESI = return value |
| 535 | 1: |
| 536 | bts $FLAG_IS_PRIMARY, %esi # all Family 10h cores are primary |
| 537 | node_core_f10_exit: |
| 538 | .endm |
| 539 | |
| 540 | |
| 541 | /***************************************************************************** |
| 542 | ** Family 12h MACROS |
| 543 | *****************************************************************************/ |
| 544 | /***************************************************************************** |
| 545 | * |
| 546 | * AMD_ENABLE_STACK_FAMILY_HOOK_F12 Macro - Stackless |
| 547 | * |
| 548 | * Set any family specific controls needed to enable the use of |
| 549 | * cache as general storage before main memory is available. |
| 550 | * |
| 551 | * Inputs: |
| 552 | * ESI - node#, core#, flags from GET_NODE_ID_CORE_ID |
| 553 | * Outputs: |
| 554 | * none |
| 555 | * |
| 556 | * Family 12h requirements (BKDG section 2.3.3): |
| 557 | * The following requirements must be satisfied prior to using the cache as general storage: |
| 558 | * * Paging must be disabled. |
| 559 | * * MSRC001_0015[INVD_WBINVD]=0 |
| 560 | * * MSRC001_1020[DIS_SS]=1 |
| 561 | * * MSRC001_1021[DIS_SPEC_TLB_RLD]=1 |
| 562 | * * MSRC001_1022[DIS_SPEC_TLB_RLD]=1 |
| 563 | * * MSRC001_1022[DIS_CLR_WBTOL2_SMC_HIT]=1 |
| 564 | * * MSRC001_1022[DIS_HW_PF]=1 |
| 565 | * * MSRC001_1029[ClflushSerialize]=1 |
| 566 | * * No INVD or WBINVD, no exceptions, page faults or interrupts |
| 567 | *****************************************************************************/ |
| 568 | .macro AMD_ENABLE_STACK_FAMILY_HOOK_F12 |
| 569 | LOCAL fam12_enable_stack_hook_exit |
| 570 | |
| 571 | AMD_CPUID $CPUID_MODEL |
| 572 | shr $20, %eax # AL = cpu extended family |
| 573 | cmp $0x03, %al # Is this family 12h? |
| 574 | jnz fam12_enable_stack_hook_exit # Br if no |
| 575 | |
| 576 | mov $DC_CFG, %ecx # MSR:C001_1022 |
| 577 | _RDMSR |
| 578 | bts $DC_DIS_SPEC_TLB_RLD, %eax # Disable speculative DC-TLB reloads |
| 579 | bts $DIS_CLR_WBTOL2_SMC_HIT, %eax # Disable self modifying code check buffer |
| 580 | bts $DIS_HW_PF, %eax # Disable hardware prefetches |
| 581 | _WRMSR |
| 582 | |
| 583 | dec %cx #IC_CFG # MSR:C001_1021 |
| 584 | _RDMSR |
| 585 | bts $IC_DIS_SPEC_TLB_RLD, %eax # Disable speculative IC-TLB reloads |
| 586 | _WRMSR |
| 587 | |
| 588 | dec %cx #LS_CFG # MSR:C001_1020 |
| 589 | _RDMSR |
| 590 | bts $DIS_SS, %eax # Disabled Streaming store functionality |
| 591 | _WRMSR |
| 592 | |
| 593 | mov $HWCR, %ecx # MSR C001_0015 |
| 594 | _RDMSR |
| 595 | bt $FLAG_STACK_REENTRY , %esi # Check if stack has already been set |
| 596 | jc fam12_skipClearingBit4 |
| 597 | btr $INVD_WBINVD, %eax # disable INVD -> WBINVD conversion |
| 598 | _WRMSR |
| 599 | |
| 600 | fam12_skipClearingBit4: |
| 601 | mov $DE_CFG, %ecx # MSR:C001_1029 |
| 602 | _RDMSR |
| 603 | bts $CL_FLUSH_SERIALIZE, %eax # Serialize all CL Flush actions |
| 604 | _WRMSR |
| 605 | |
| 606 | fam12_enable_stack_hook_exit: |
| 607 | .endm |
| 608 | |
| 609 | /***************************************************************************** |
| 610 | * |
| 611 | * AMD_DISABLE_STACK_FAMILY_HOOK_F12 Macro - Stackless |
| 612 | * |
| 613 | * Return any family specific controls to their 'standard' |
| 614 | * settings for using cache with main memory. |
| 615 | * |
| 616 | * Inputs: |
| 617 | * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# |
| 618 | * Outputs: |
| 619 | * none |
| 620 | * |
| 621 | * Family 12h requirements: |
| 622 | * * INVD or WBINVD |
| 623 | * * MSRC001_0015[INVD_WBINVD]=1 |
| 624 | * * MSRC001_1020[DIS_SS]=0 |
| 625 | * * MSRC001_1021[IC_DIS_SPEC_TLB_RLD]=0 |
| 626 | * * MSRC001_1022[DC_DIS_SPEC_TLB_RLD]=0 |
| 627 | * * MSRC001_1022[DIS_CLR_WBTOL2_SMC_HIT]=0 |
| 628 | * * MSRC001_1022[DIS_HW_PF]=0 |
| 629 | * * MSRC001_1029[ClflushSerialize]=0 |
| 630 | *****************************************************************************/ |
| 631 | .macro AMD_DISABLE_STACK_FAMILY_HOOK_F12 |
| 632 | LOCAL fam12_disable_stack_hook_exit |
| 633 | |
| 634 | AMD_CPUID $CPUID_MODEL |
| 635 | shr $20, %eax # AL = cpu extended family |
| 636 | cmp $0x03, %al # Is this family 12h? |
| 637 | jnz fam12_disable_stack_hook_exit # Br if no |
| 638 | |
| 639 | mov $DC_CFG, %ecx # MSR:C001_1022 |
| 640 | _RDMSR |
| 641 | btr $DC_DIS_SPEC_TLB_RLD, %eax # Turn on speculative DC-TLB reloads |
| 642 | btr $DIS_CLR_WBTOL2_SMC_HIT, %eax # Enable self modifying code check buffer |
| 643 | btr $DIS_HW_PF, %eax # Enable Hardware prefetches |
| 644 | _WRMSR |
| 645 | |
| 646 | dec %cx #IC_CFG # MSR:C001_1021 |
| 647 | _RDMSR |
| 648 | btr $IC_DIS_SPEC_TLB_RLD, %eax # Turn on speculative IC-TLB reloads |
| 649 | _WRMSR |
| 650 | |
| 651 | dec %cx #LS_CFG # MSR:C001_1020 |
| 652 | _RDMSR |
| 653 | btr $DIS_SS, %eax # Turn on Streaming store functionality |
| 654 | _WRMSR |
| 655 | |
| 656 | mov $DE_CFG, %ecx # MSR:C001_1029 |
| 657 | _RDMSR |
| 658 | btr $CL_FLUSH_SERIALIZE, %eax |
| 659 | _WRMSR |
| 660 | |
| 661 | #-------------------------------------------------------------------------- |
| 662 | # Begin critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 663 | #-------------------------------------------------------------------------- |
| 664 | |
| 665 | mov $HWCR, %ecx # MSR:0000_0015h |
| 666 | _RDMSR |
| 667 | mov %ax, %bx # Save INVD -> WBINVD bit |
| 668 | btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion |
| 669 | _WRMSR |
| 670 | invd # Clear the cache tag RAMs |
| 671 | mov %bx, %ax # Restore INVD -> WBINVD bit |
| 672 | _WRMSR |
| 673 | |
| 674 | #-------------------------------------------------------------------------- |
| 675 | # End critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 676 | #-------------------------------------------------------------------------- |
| 677 | |
| 678 | fam12_disable_stack_hook_exit: |
| 679 | .endm |
| 680 | |
| 681 | /***************************************************************************** |
| 682 | * |
| 683 | * GET_NODE_ID_CORE_ID_F12 Macro - Stackless |
| 684 | * |
| 685 | * Read family specific values to determine the node and core |
| 686 | * numbers for the core executing this code. |
| 687 | * |
| 688 | * Inputs: |
| 689 | * none |
| 690 | * Outputs: |
| 691 | * SI = core#, node# & flags (see GET_NODE_ID_CORE_ID macro above) |
| 692 | *****************************************************************************/ |
| 693 | .macro GET_NODE_ID_CORE_ID_F12 |
| 694 | |
| 695 | LOCAL node_core_f12_exit |
| 696 | |
| 697 | cmp $-1, %si # Has node/core already been discovered? |
| 698 | jnz node_core_f12_exit # Br if yes |
| 699 | |
| 700 | AMD_CPUID $CPUID_MODEL |
| 701 | shr $20, %eax # AL = cpu extended family |
| 702 | cmp $0x03, %al # Is this family 12h? |
| 703 | jnz node_core_f12_exit # Br if no |
| 704 | |
| 705 | shr $24, %ebx # CPUID_0000_0001_EBX[31:24]: initial local APIC physical ID |
| 706 | bts $FLAG_IS_PRIMARY, %ebx # all family 12h cores are primary |
| 707 | mov %ebx, %esi # ESI = Node#=0, core number |
| 708 | node_core_f12_exit: |
| 709 | .endm |
| 710 | |
| 711 | /***************************************************************************** |
| 712 | ** Family 14h MACROS |
| 713 | *****************************************************************************/ |
| 714 | /***************************************************************************** |
| 715 | * |
| 716 | * AMD_ENABLE_STACK_FAMILY_HOOK_F14 Macro - Stackless |
| 717 | * |
| 718 | * Set any family specific controls needed to enable the use of |
| 719 | * cache as general storage before main memory is available. |
| 720 | * |
| 721 | * Inputs: |
| 722 | * ESI - node#, core#, flags from GET_NODE_ID_CORE_ID |
| 723 | * Outputs: |
| 724 | * none |
| 725 | * |
| 726 | * Family 14h requirements (BKDG section 2.3.3): |
| 727 | * * Paging must be disabled. |
| 728 | * * MSRC001_0015[INVD_WBINVD]=0. |
| 729 | * * MSRC001_1020[DisStreamSt]=1. |
| 730 | * * MSRC001_1021[DIS_SPEC_TLB_RLD]=1. Disable speculative ITLB reloads. |
| 731 | * * MSRC001_1022[DIS_HW_PF]=1. |
| 732 | * * No INVD or WBINVD, no exceptions, page faults or interrupts |
| 733 | *****************************************************************************/ |
| 734 | .macro AMD_ENABLE_STACK_FAMILY_HOOK_F14 |
| 735 | LOCAL fam14_enable_stack_hook_exit |
| 736 | |
| 737 | AMD_CPUID $CPUID_MODEL |
| 738 | shr $20, %eax # AL = cpu extended family |
| 739 | cmp $0x05, %al # Is this family 14h? |
| 740 | jnz fam14_enable_stack_hook_exit # Br if no |
| 741 | |
| 742 | mov $DC_CFG, %ecx # MSR:C001_1022 |
| 743 | _RDMSR |
| 744 | bts $DIS_HW_PF, %eax # Disable hardware prefetches |
| 745 | _WRMSR |
| 746 | |
| 747 | dec %cx #IC_CFG # MSR:C001_1021 |
| 748 | _RDMSR |
| 749 | bts $IC_DIS_SPEC_TLB_RLD, %eax # Disable speculative TLB reloads |
| 750 | _WRMSR |
| 751 | |
| 752 | dec %cx #LS_CFG # MSR:C001_1020 |
| 753 | _RDMSR |
| 754 | bts $DIS_STREAM_ST, %eax # Disabled Streaming store functionality |
| 755 | _WRMSR |
| 756 | |
| 757 | mov $HWCR, %ecx # MSR C001_0015 |
| 758 | _RDMSR |
| 759 | bt $FLAG_STACK_REENTRY, %esi # Check if stack has already been set |
| 760 | jc fam14_skipClearingBit4 |
| 761 | btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion |
| 762 | _WRMSR |
| 763 | fam14_skipClearingBit4: # Keeping this label |
| 764 | |
| 765 | fam14_enable_stack_hook_exit: |
| 766 | .endm |
| 767 | |
| 768 | /***************************************************************************** |
| 769 | * |
| 770 | * AMD_DISABLE_STACK_FAMILY_HOOK_F14 Macro - Stackless |
| 771 | * |
| 772 | * Return any family specific controls to their 'standard' |
| 773 | * settings for using cache with main memory. |
| 774 | * |
| 775 | * Inputs: |
| 776 | * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# |
| 777 | * Outputs: |
| 778 | * none |
| 779 | * |
| 780 | * Family 14h requirements: |
| 781 | * * INVD or WBINVD |
| 782 | * * MSRC001_0015[INVD_WBINVD]=1. |
| 783 | * * MSRC001_1020[DisStreamSt]=0. |
| 784 | * * MSRC001_1021[DIS_SPEC_TLB_RLD]=0. |
| 785 | * * MSRC001_1022[DIS_HW_PF]=0. |
| 786 | *****************************************************************************/ |
| 787 | .macro AMD_DISABLE_STACK_FAMILY_HOOK_F14 |
| 788 | LOCAL fam14_disable_stack_hook_exit |
| 789 | |
| 790 | AMD_CPUID $CPUID_MODEL |
| 791 | shr $20, %eax # AL = cpu extended family |
| 792 | cmp $0x05, %al # Is this family 14h? |
| 793 | jnz fam14_disable_stack_hook_exit # Br if no |
| 794 | |
| 795 | mov $LS_CFG, %ecx # MSR:C001_1020 |
| 796 | _RDMSR |
| 797 | btr $DIS_STREAM_ST, %eax # Turn on Streaming store functionality |
| 798 | _WRMSR |
| 799 | |
| 800 | inc %cx #IC_CFG # MSR:C001_1021 |
| 801 | _RDMSR |
| 802 | btr $IC_DIS_SPEC_TLB_RLD, %eax # Turn on speculative DC-TLB reloads |
| 803 | _WRMSR |
| 804 | |
| 805 | inc %cx #DC_CFG # MSR:C001_1022 |
| 806 | _RDMSR |
| 807 | btr $DIS_HW_PF, %eax # Turn on hardware prefetches |
| 808 | _WRMSR |
| 809 | |
| 810 | #-------------------------------------------------------------------------- |
| 811 | # Begin critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 812 | #-------------------------------------------------------------------------- |
| 813 | |
| 814 | mov $HWCR, %ecx # MSR:C001_0015h |
| 815 | _RDMSR |
| 816 | btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion |
| 817 | _WRMSR |
| 818 | invd # Clear the cache tag RAMs |
| 819 | bts $INVD_WBINVD, %eax # Turn on Conversion of INVD to WBINVD |
| 820 | _WRMSR |
| 821 | |
| 822 | #-------------------------------------------------------------------------- |
| 823 | # End critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 824 | #-------------------------------------------------------------------------- |
| 825 | |
| 826 | fam14_disable_stack_hook_exit: |
| 827 | .endm |
| 828 | |
| 829 | /***************************************************************************** |
| 830 | * |
| 831 | * GET_NODE_ID_CORE_ID_F14 Macro - Stackless |
| 832 | * |
| 833 | * Read family specific values to determine the node and core |
| 834 | * numbers for the core executing this code. |
| 835 | * |
| 836 | * Inputs: |
| 837 | * none |
| 838 | * Outputs: |
| 839 | * SI = core#, node# & flags (see GET_NODE_ID_CORE_ID macro above) |
| 840 | *****************************************************************************/ |
| 841 | .macro GET_NODE_ID_CORE_ID_F14 |
| 842 | |
| 843 | LOCAL node_core_f14_exit |
| 844 | |
| 845 | cmp $0x-1, %si # Has node/core already been discovered? |
| 846 | jnz node_core_f14_exit # Br if yes |
| 847 | |
| 848 | AMD_CPUID $CPUID_MODEL |
| 849 | shr $20, %eax # AL = cpu extended family |
| 850 | cmp $0x05, %al # Is this family 14h? |
| 851 | jnz node_core_f14_exit # Br if no |
| 852 | |
| 853 | xor %esi, %esi # Node must be 0 |
| 854 | bts $FLAG_IS_PRIMARY, %esi # all family 14h cores are primary |
| 855 | mov $APIC_BASE_ADDRESS, %ecx # MSR:0000_001B |
| 856 | _RDMSR |
| 857 | bt $APIC_BSC, %eax # Is this the BSC? |
| 858 | jc node_core_f14_exit # Br if yes |
| 859 | inc %si # Set core to 1 |
| 860 | node_core_f14_exit: |
| 861 | .endm |
| 862 | |
| 863 | |
| 864 | |
| 865 | /***************************************************************************** |
| 866 | ** Family 15h MACROS |
| 867 | *****************************************************************************/ |
| 868 | /***************************************************************************** |
| 869 | * |
| 870 | * AMD_ENABLE_STACK_FAMILY_HOOK_F15 Macro - Stackless |
| 871 | * |
| 872 | * Set any family specific controls needed to enable the use of |
| 873 | * cache as general storage before main memory is available. |
| 874 | * |
| 875 | * Inputs: |
| 876 | * ESI - node#, core#, flags from GET_NODE_ID_CORE_ID |
| 877 | * Outputs: |
| 878 | * none |
| 879 | * |
| 880 | * Family 15h requirements (BKDG #42301 section 2.3.3): |
| 881 | * * Paging must be disabled. |
| 882 | * * MSRC001_0015[INVD_WBINVD]=0 |
| 883 | * * MSRC001_1020[DisSS]=1 |
| 884 | * * MSRC001_1021[DIS_SPEC_TLB_RLD]=1 |
| 885 | * * MSRC001_1022[DIS_SPEC_TLB_RLD]=1 |
| 886 | * * MSRC001_1022[DisHwPf]=1 |
| 887 | * * No INVD or WBINVD, no exceptions, page faults or interrupts |
| 888 | *****************************************************************************/ |
| 889 | .macro AMD_ENABLE_STACK_FAMILY_HOOK_F15 |
| 890 | LOCAL fam15_enable_stack_hook_exit |
| 891 | |
| 892 | AMD_CPUID $CPUID_MODEL |
| 893 | shr $20, %eax # AL = cpu extended family |
| 894 | cmp $0x06, %al # Is this family 15h? |
| 895 | jnz fam15_enable_stack_hook_exit # Br if no |
| 896 | |
| 897 | bt $FLAG_STACK_REENTRY , %esi # Check if stack has already been set |
| 898 | jc fam15_skipClearingBit4 |
| 899 | mov $HWCR, %ecx # MSR C001_0015 |
| 900 | _RDMSR |
| 901 | btr $INVD_WBINVD, %eax # disable INVD -> WBINVD conversion |
| 902 | _WRMSR |
| 903 | |
| 904 | fam15_skipClearingBit4: |
| 905 | mov $LS_CFG, %ecx # MSR:C001_1020 |
| 906 | _RDMSR |
| 907 | bts $DIS_SS, %eax # Turn on Streaming store functionality disabled bit |
| 908 | _WRMSR |
| 909 | |
| 910 | inc %ecx #IC_CFG # MSR:C001_1021 |
| 911 | _RDMSR |
| 912 | bts $IC_DIS_SPEC_TLB_RLD, %eax # Turn on Disable speculative IC-TLB reloads bit |
| 913 | _WRMSR |
| 914 | |
| 915 | inc %ecx #DC_CFG # MSR:C001_1022 |
| 916 | _RDMSR |
| 917 | bts $DC_DIS_SPEC_TLB_RLD, %eax # Turn on Disable speculative DC-TLB reloads bit |
| 918 | bts $DIS_HW_PF, %eax # Turn on Disable hardware prefetches bit |
| 919 | _WRMSR |
| 920 | |
| 921 | mov $CU_CFG3, %ecx # MSR:C001_102B |
| 922 | _RDMSR |
| 923 | btr $(COMBINE_CR0_CD - 32), %edx # Clear CombineCr0Cd bit |
| 924 | _WRMSR |
| 925 | |
| 926 | fam15_enable_stack_hook_exit: |
| 927 | .endm |
| 928 | |
| 929 | |
| 930 | /***************************************************************************** |
| 931 | * |
| 932 | * AMD_DISABLE_STACK_FAMILY_HOOK_F15 Macro - Stackless |
| 933 | * |
| 934 | * Return any family specific controls to their 'standard' |
| 935 | * settings for using cache with main memory. |
| 936 | * |
| 937 | * Inputs: |
| 938 | * ESI - [31:24] flags; [15,8]= Node#; [7,0]= core# |
| 939 | * Outputs: |
| 940 | * none |
| 941 | * |
| 942 | * Family 15h requirements: |
| 943 | * * INVD or WBINVD |
| 944 | * * MSRC001_0015[INVD_WBINVD]=1 |
| 945 | * * MSRC001_1020[DisSS]=0 |
| 946 | * * MSRC001_1021[DIS_SPEC_TLB_RLD]=0 |
| 947 | * * MSRC001_1022[DIS_SPEC_TLB_RLD]=0 |
| 948 | * * MSRC001_1022[DIS_HW_PF]=0 |
| 949 | *****************************************************************************/ |
| 950 | .macro AMD_DISABLE_STACK_FAMILY_HOOK_F15 |
| 951 | LOCAL fam15_disable_stack_hook_exit |
| 952 | |
| 953 | AMD_CPUID $CPUID_MODEL |
| 954 | mov %eax, %ebx # Save revision info to EBX |
| 955 | shr $20, %eax # AL = cpu extended family |
| 956 | cmp $0x06, %al # Is this family 15h? |
| 957 | jnz fam15_disable_stack_hook_exit # Br if no |
| 958 | |
| 959 | mov $LS_CFG, %ecx # MSR:C001_1020 |
| 960 | #.if (ebx != 00600F00h) ; Is this rev A0? |
| 961 | cmp $0x00600F00, %ebx |
| 962 | jz 0f |
| 963 | _RDMSR |
| 964 | btr $DIS_SS, %eax # Turn on Streaming store functionality |
| 965 | _WRMSR |
| 966 | #.endif |
| 967 | 0: # End workaround for errata 495 and 496 |
| 968 | |
| 969 | inc %ecx #IC_CFG # MSR:C001_1021 |
| 970 | _RDMSR |
| 971 | btr $IC_DIS_SPEC_TLB_RLD, %eax # Turn on speculative TLB reloads |
| 972 | _WRMSR |
| 973 | |
| 974 | inc %ecx #DC_CFG # MSR:C001_1022 |
| 975 | _RDMSR |
| 976 | btr $DC_DIS_SPEC_TLB_RLD, %eax # Turn on speculative TLB reloads |
| 977 | #.if (ebx != 00600F00h) # Is this rev A0? |
| 978 | cmp $0x00600F00, %ebx |
| 979 | jz 0f |
| 980 | btr $DIS_HW_PF, %eax # Turn on hardware prefetches |
| 981 | #.endif # End workaround for erratum 498 |
| 982 | 0: |
| 983 | _WRMSR |
| 984 | #-------------------------------------------------------------------------- |
| 985 | # Begin critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 986 | #-------------------------------------------------------------------------- |
| 987 | |
| 988 | bt $FLAG_IS_PRIMARY, %esi |
| 989 | #.if (carry?) # Only clear cache from primary core |
| 990 | jnc 0f |
| 991 | mov $HWCR, %ecx # MSR:C001_0015h |
| 992 | _RDMSR |
| 993 | btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion |
| 994 | _WRMSR |
| 995 | wbinvd # Clear the cache tag RAMs |
| 996 | bts $INVD_WBINVD, %eax # Turn on Conversion of INVD to WBINVD |
| 997 | _WRMSR |
| 998 | #.endif # end |
| 999 | 0: |
| 1000 | |
| 1001 | #-------------------------------------------------------------------------- |
| 1002 | # End critical sequence in which EAX, BX, ECX, and EDX must be preserved. |
| 1003 | #-------------------------------------------------------------------------- |
| 1004 | |
| 1005 | mov $CU_CFG3, %ecx # MSR:C001_102B |
| 1006 | _RDMSR |
| 1007 | bts $(COMBINE_CR0_CD - 32), %eax # Set CombineCr0Cd bit |
| 1008 | _WRMSR |
| 1009 | |
| 1010 | fam15_disable_stack_hook_exit: |
| 1011 | .endm |
| 1012 | |
| 1013 | |
| 1014 | /***************************************************************************** |
| 1015 | * |
| 1016 | * GET_NODE_ID_CORE_ID_F15 Macro - Stackless |
| 1017 | * |
| 1018 | * Read family specific values to determine the node and core |
| 1019 | * numbers for the core executing this code. |
| 1020 | * |
| 1021 | * Inputs: |
| 1022 | * none |
| 1023 | * Outputs: |
| 1024 | * SI = core#, node# & flags (see GET_NODE_ID_CORE_ID macro above) |
| 1025 | *****************************************************************************/ |
| 1026 | .macro GET_NODE_ID_CORE_ID_F15 |
| 1027 | |
| 1028 | LOCAL node_core_f15_exit |
| 1029 | LOCAL node_core_f15_AP |
| 1030 | LOCAL node_core_f15_shared |
| 1031 | |
| 1032 | cmp $-1, %si # Has node/core already been discovered? |
| 1033 | jnz node_core_f15_exit # Br if yes |
| 1034 | |
| 1035 | AMD_CPUID $CPUID_MODEL |
| 1036 | shr $20, %eax # AL = cpu extended family |
| 1037 | cmp $06, %al # Is this family 15h? |
| 1038 | jnz node_core_f15_exit # Br if no |
| 1039 | |
| 1040 | xor %esi, %esi # Assume BSC, clear local flags |
| 1041 | mov $APIC_BASE_ADDRESS, %ecx # MSR:0000_001B |
| 1042 | _RDMSR |
| 1043 | bt $APIC_BSC, %eax # Is this the BSC? |
| 1044 | jnc node_core_f15_AP # Br if no |
| 1045 | |
| 1046 | # This is the BSP. |
| 1047 | # Enable routing tables on BSP (just in case the HT init code has not yet enabled them) |
| 1048 | mov $0x8000C06C, %eax # PCI address for D18F0x6C Link Initialization Control Register |
| 1049 | mov $0x0CF8, %dx |
| 1050 | out %eax, %dx |
| 1051 | add $4, %dx |
| 1052 | in %dx, %eax |
| 1053 | btr $0, %eax # Set LinkInitializationControl[RouteTblDis] = 0 |
| 1054 | out %eax, %dx |
| 1055 | jmp node_core_f15_shared # |
| 1056 | |
| 1057 | node_core_f15_AP: |
| 1058 | # |
| 1059 | # This is an AP. Routing tables have been enabled by the HT Init process. |
| 1060 | # Also, the MailBox register was set by the BSP during early init |
| 1061 | # The Mailbox register content is formatted as follows: |
| 1062 | # UINT32 Node:4; // The node id of Core's node. |
| 1063 | # UINT32 Socket:4; // The socket of this Core's node. |
| 1064 | # UINT32 Module:2; // The internal module number for Core's node. |
| 1065 | # UINT32 ModuleType:2; // Single Module = 0, Multi-module = 1. |
| 1066 | # UINT32 :20; // Reserved |
| 1067 | # |
| 1068 | mov $0x0C0000408, %ecx # Read the family 15h mailbox |
| 1069 | _RDMSR # MC4_MISC1[63:32] |
| 1070 | mov %dx, %si # SI = raw mailbox contents (will extract node# from this) |
| 1071 | shr $24, %ebx # BL = CPUID Fn0000_0001_EBX[LocalApicId] |
| 1072 | mov %bx, %di # DI = Initial APIC ID (will extract core# from this) |
| 1073 | |
| 1074 | AMD_CPUID $AMD_CPUID_APIC # |
| 1075 | shr $4, %ch # CH = ApicIdSize, #bits in APIC ID that show core# |
| 1076 | inc %cl # CL = Number of enabled cores in the socket |
| 1077 | mov %cx, %bx |
| 1078 | |
| 1079 | mov $NB_CFG, %ecx |
| 1080 | _RDMSR # EDX has InitApicIdCpuIdLo bit |
| 1081 | |
| 1082 | mov %bh, %cl # CL = APIC ID size |
| 1083 | mov $1, %al # Convert APIC ID size to an AND mask |
| 1084 | shl %cl, %al # AL = 2^APIC ID size |
| 1085 | dec %al # AL = mask for relative core number |
| 1086 | xor %ah, %ah # AX = mask for relative core number |
| 1087 | bt $(INIT_APIC_ID_CPU_ID_LO-32), %edx # InitApicIdCpuIdLo == 1? |
| 1088 | #.if (!carry?) # Br if yes |
| 1089 | jc 0f |
| 1090 | mov $8, %ch # Calculate core number shift count |
| 1091 | sub %cl, %ch # CH = core shift count |
| 1092 | mov %ch, %cl |
| 1093 | shr %cl, %di # Right justify core number |
| 1094 | #.endif |
| 1095 | 0: |
| 1096 | and %ax, %di # DI = socket-relative core number |
| 1097 | |
| 1098 | mov %si, %cx # CX = raw mailbox value |
| 1099 | shr $10, %cx # CL[1:0] = ModuleType or #nodes per socket (0-SCM, 1-MCM) |
| 1100 | and $3, %cl # Isolate ModuleType |
| 1101 | xor %bh, %bh # BX = Number of enabled cores in the socket |
| 1102 | shr %cl, %bx # BX = Number of enabled cores per node |
| 1103 | xor %dx, %dx # Clear upper word for div |
| 1104 | mov %di, %ax # AX = socket-relative core number |
| 1105 | div %bx # DX = node-relative core number |
| 1106 | movzx %si, %eax # Prepare return value |
| 1107 | and $0x000F, %ax # AX = node number |
| 1108 | shl $8,%ax # [15:8]=node# |
| 1109 | mov %dl, %al # [7:0]=core# (relative to node) |
| 1110 | mov %eax, %esi # ESI = node-relative core number |
| 1111 | |
| 1112 | # |
| 1113 | # determine if this core shares MTRRs |
| 1114 | # |
| 1115 | node_core_f15_shared: |
| 1116 | mov $0x8000C580, %eax # Compute Unit Status |
| 1117 | mov %si, %bx |
| 1118 | shl $3, %bh # Move node# to PCI Dev# field |
| 1119 | add %bh, %ah # Adjust for node number |
| 1120 | mov $0x0CF8, %dx |
| 1121 | out %eax, %dx |
| 1122 | add $4, %dx |
| 1123 | in %dx, %eax # [3:0]=Enabled# [19:16]=DualCore |
| 1124 | |
| 1125 | # BL is MyCore# |
| 1126 | mov $0x06, %cx # Use CH as 'first of pair' core# |
| 1127 | #.while (cl > 0) |
| 1128 | jmp 0f |
| 1129 | 8: |
| 1130 | bt $0, %eax # Is pair enabled? |
| 1131 | #.if (carry?) # |
| 1132 | jnc 1f |
| 1133 | mov $0x01, %bh # flag core as primary |
| 1134 | bt $16, %eax # Is there a 2nd in the pair? |
| 1135 | #.if (carry?) # |
| 1136 | jnc 4f |
| 1137 | #.break .if (ch == bl) # Does 1st match MyCore#? |
| 1138 | cmp %bl, %ch |
| 1139 | je 9f |
| 1140 | inc %ch |
| 1141 | xor %bh, %bh # flag core as NOT primary |
| 1142 | #.break .if (ch == bl) # Does 2nd match MyCore#? |
| 1143 | cmp %bl, %ch |
| 1144 | je 9f |
| 1145 | jmp 2f |
| 1146 | #.else # No 2nd core |
| 1147 | 4: |
| 1148 | #.break .if (ch == bl) # Does 1st match MyCore#? |
| 1149 | cmp %bl, %ch |
| 1150 | je 9f |
| 1151 | #.endif |
| 1152 | 2: |
| 1153 | inc %ch |
| 1154 | #.endif |
| 1155 | 1: |
| 1156 | shr $1, %eax |
| 1157 | dec %cl |
| 1158 | #.endw |
| 1159 | 0: |
| 1160 | #.if (cl == 0) |
| 1161 | cmp $0x0, %cl |
| 1162 | ja 8b |
| 1163 | 9: |
| 1164 | or %cl, %cl |
| 1165 | jne 1f |
| 1166 | #Error - core# didn't match Compute Unit Status content |
| 1167 | bts $FLAG_UNKNOWN_FAMILY, %esi |
| 1168 | bts $FLAG_IS_PRIMARY, %esi # Set Is_Primary for unknowns |
| 1169 | #.endif |
| 1170 | 1: |
| 1171 | #.if (bh != 0) # Check state of primary for the matched core |
| 1172 | or %bh, %bh |
| 1173 | je 2f |
| 1174 | bts $FLAG_IS_PRIMARY, %esi # Set shared flag into return value |
| 1175 | #.endif |
| 1176 | 2: |
| 1177 | |
| 1178 | node_core_f15_exit: |
| 1179 | |
| 1180 | .endm |
| 1181 | |
| 1182 | /***************************************************************************** |
| 1183 | * AMD_ENABLE_STACK: Setup a stack |
| 1184 | * |
| 1185 | * In: |
| 1186 | * EBX = Return address (preserved) |
| 1187 | * |
| 1188 | * Out: |
| 1189 | * SS:ESP - Our new private stack location |
| 1190 | * |
| 1191 | * EAX = AGESA_STATUS |
| 1192 | * |
| 1193 | * ECX = Stack size in bytes |
| 1194 | * |
| 1195 | * Requirements: |
| 1196 | * * This routine presently is limited to a max of 64 processor cores |
| 1197 | * Preserved: |
| 1198 | * ebx ebp |
| 1199 | * Destroyed: |
| 1200 | * eax, ecx, edx, edi, esi, ds, es, ss, esp |
| 1201 | * mmx0, mmx1 |
| 1202 | * |
| 1203 | * Description: |
| 1204 | * Fixed MTRR address allocation to cores: |
| 1205 | * The BSP gets 64K of stack, Core0 of each node gets 16K of stack, all other cores get 4K. |
| 1206 | * There is a max of 1 BSP, 7 core0s and 56 other cores. |
| 1207 | * Although each core has it's own cache storage, they share the address space. Each core must |
| 1208 | * be assigned a private and unique address space for its stack. To support legacy systems, |
| 1209 | * the stack needs to be within the legacy address space (1st 1Meg). Room must also be reserved |
| 1210 | * for the other legacy elements (Interrupt vectors, BIOS ROM, video buffer, etc.) |
| 1211 | * |
| 1212 | * 80000h 40000h 00000h |
| 1213 | * +----------+----------+----------+----------+----------+----------+----------+----------+ |
| 1214 | * 64K | | | | | | | | | 64K ea |
| 1215 | * ea +----------+----------+----------+----------+----------+----------+----------+----------+ |
| 1216 | * | MTRR 0000_0250 MTRRfix64K_00000 | |
| 1217 | * +----------+----------+----------+----------+----------+----------+----------+----------+ |
| 1218 | * | 7 , 6 | 5 , 4 | 3 , 2 | 1 , 0 | 0 | | | | <-node |
| 1219 | * |7..1,7..1 |7..1,7..1 |7..1,7..1 |7..1,7..1 | 0 | | | | <-core |
| 1220 | * +----------+----------+----------+----------+----------+----------+----------+----------+ |
| 1221 | * |
| 1222 | * C0000h B0000h A0000h 90000h 80000h |
| 1223 | * +------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+ |
| 1224 | *16K | | | | | | | | | | | | | | | | | |
| 1225 | * ea +------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+ |
| 1226 | * | MTRR 0259 MTRRfix16K_A0000 | MTRR 0258 MTRRfix16K_80000 | |
| 1227 | * +------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+ |
| 1228 | * | > Dis|play B|uffer | < | | | | | 7 | 6 | 5 | 4 | 3 | 2 | 1 | | <-node |
| 1229 | * | > T| e m |p o r |a r y | B u |f f e |r A |r e a<| 0 | 0 | 0 | 0 | 0 | 0 | 0 | | <-core |
| 1230 | * +------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+ |
| 1231 | * |
| 1232 | * E0000h D0000h C0000h |
| 1233 | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1234 | * 4K | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4K ea |
| 1235 | * ea +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1236 | * | 026B MTRRfix4K_D8000 | 026A MTRRfix4K_D0000 | 0269 MTRRfix4K_C8000 | 0268 MTRRfix4K_C0000 | |
| 1237 | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1238 | * | | | | | | | | | | | | | | | | | >| V| I| D| E| O| |B |I |O |S | |A |r |e |a<| |
| 1239 | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1240 | * |
| 1241 | * 100000h F0000h E0000h |
| 1242 | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1243 | * | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4K ea |
| 1244 | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1245 | * | 026F MTRRfix4K_F8000 | 026E MTRRfix4K_F0000 | 026D MTRRfix4K_E8000 | 026C MTRRfix4K_E0000 | |
| 1246 | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1247 | * | >|MA|IN| B|IO|S |RA|NG|E | | | | | | |< | >|EX|TE|ND|ED| B|IO|S |ZO|NE| | | | | |< | |
| 1248 | * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |
| 1249 | *****************************************************************************/ |
| 1250 | .macro AMD_ENABLE_STACK |
| 1251 | |
| 1252 | # These are local labels. Declared so linker doesn't cause 'redefined label' errors |
| 1253 | LOCAL SetupStack |
| 1254 | LOCAL Real16bMode |
| 1255 | LOCAL Protected32Mode |
| 1256 | LOCAL ClearTheStack |
| 1257 | |
| 1258 | # Note that SS:ESP will be default stack. Note that this stack |
| 1259 | # routine will not be used after memory has been initialized. Because |
| 1260 | # of its limited lifetime, it will not conflict with typical PCI devices. |
| 1261 | movd %ebx, %mm0 # Put return address in a safe place |
| 1262 | movd %ebp, %mm1 # Save some other user registers |
| 1263 | |
| 1264 | # get node id and core id of current executing core |
| 1265 | GET_NODE_ID_CORE_ID # Sets ESI[23:16]=Shared core## SI[15,8]= Node## SI[7,0]= core# (relative to node) |
| 1266 | # Note: ESI[31:24] are used for flags: Unrecognized Family, Is_Primary core, Stack already established |
| 1267 | |
| 1268 | # determine if stack is already enabled. We are using the DefType MSR for this determination. |
| 1269 | # It is =0 after reset; CAR setup sets it to enable the MTRRs |
| 1270 | mov %cr0, %eax |
| 1271 | test $CR0_MASK, %eax # Is cache disabled? (CD & NW bits) |
| 1272 | jnz SetupStack # Jump if yes |
| 1273 | mov $AMD_MTRR_DEFTYPE, %ecx # MSR:0000_02FF |
| 1274 | _RDMSR |
| 1275 | test $MSR_MASK, %eax # Are the default types enabled? (MTRR_DEF_TYPE_EN + MTRR_DEF_TYPE_FIX_EN) |
| 1276 | jz SetupStack # Jump if no |
| 1277 | or $FLAG_STACK_REENTRY, %esi # Bit25, indicate stack has already been initialized |
| 1278 | |
| 1279 | SetupStack: |
| 1280 | # Set node to map the first 16MB to node 0# 0000_0000 to 00FF_FFFF as DRAM |
| 1281 | mov %esi, %ebx # Get my Node/Core info |
| 1282 | xor %bl, %bl |
| 1283 | shl $3, %bh # Isolate my node#, match alignment for PCI Dev# |
| 1284 | mov $0x8000C144, %eax # D18F1x44:DRAM Base/Limit# N is Base, N+4 is Limit |
| 1285 | add %bh, %ah |
| 1286 | mov %eax, %ebx # Save PCI address for Base/Limit pair |
| 1287 | |
| 1288 | mov $0x0CF8, %dx |
| 1289 | out %eax, %dx |
| 1290 | add $4, %dx |
| 1291 | xor %eax, %eax # Least Significant bit is AD24 so 0 sets mask of 00FF_FFFF (16MB) |
| 1292 | out %eax, %dx # DRAM Limit = node0, no interleave |
| 1293 | |
| 1294 | mov %ebx, %eax |
| 1295 | sub $4, %eax # Now point to the Base register |
| 1296 | mov $0x0CF8, %dx |
| 1297 | out %eax, %dx |
| 1298 | add $4, %dx |
| 1299 | mov $0x00000003, %eax # Set the read and write enable bits |
| 1300 | out %eax, %dx # DRAM Base = 0x0000, R/W |
| 1301 | |
| 1302 | AMD_ENABLE_STACK_FAMILY_HOOK |
| 1303 | |
| 1304 | # Init CPU MSRs for our init routines |
| 1305 | mov $MTRR_SYS_CFG, %ecx # SYS_CFG |
| 1306 | _RDMSR |
| 1307 | bts $MTRR_FIX_DRAM_MOD_EN, %eax # Turn on modification enable bit |
| 1308 | _WRMSR |
| 1309 | |
| 1310 | mov %esi, %eax |
| 1311 | bt $FLAG_STACK_REENTRY, %eax # Is this a 2nd entry? |
| 1312 | #.if (!carry?) # On a re-entry, do not clear MTRRs or reset TOM; just reset the stack SS:ESP |
| 1313 | jc 0f |
| 1314 | bt $FLAG_IS_PRIMARY, %eax # Is this core the primary in a compute unit? |
| 1315 | #.if (carry?) # Families using shared groups do not need to clear the MTRRs since that is done at power-on reset |
| 1316 | # Note: Relying on MSRs to be cleared to 0's at reset for families w/shared cores |
| 1317 | # Clear all variable and Fixed MTRRs for non-shared cores |
| 1318 | jnc 0f |
| 1319 | mov $AMD_MTRR_VARIABLE_BASE0, %ecx |
| 1320 | xor %eax, %eax |
| 1321 | xor %edx, %edx |
| 1322 | #.while (cl != 10h) # Variable MTRRphysBase[n] and MTRRphysMask[n] |
| 1323 | jmp 1f |
| 1324 | 2: |
| 1325 | _WRMSR |
| 1326 | inc %cl |
| 1327 | #.endw |
| 1328 | 1: |
| 1329 | cmp $0x10, %cl |
| 1330 | jne 2b |
| 1331 | mov $AMD_MTRR_FIX64k_00000, %cx # MSR:0000_0250 |
| 1332 | _WRMSR |
| 1333 | mov $AMD_MTRR_FIX16k_80000, %cx # MSR:0000_0258 |
| 1334 | _WRMSR |
| 1335 | mov $AMD_MTRR_FIX16k_A0000, %cx # MSR:0000_0259 |
| 1336 | _WRMSR |
| 1337 | mov $AMD_MTRR_FIX4k_C0000, %cx # Fixed 4Ks: MTRRfix4K_C0000 to MTRRfix4K_F8000 |
| 1338 | #.while (cl != 70h) |
| 1339 | jmp 3f |
| 1340 | 4: |
| 1341 | _WRMSR |
| 1342 | inc %cl |
| 1343 | #.endw |
| 1344 | 3: |
| 1345 | cmp $0x70, %cl |
| 1346 | jne 4b |
| 1347 | # Set TOP_MEM (C001_001A) for non-shared cores to 16M. This will be increased at heap init. |
| 1348 | # - not strictly needed since the FixedMTRRs take presedence. |
| 1349 | mov $(16 * 1024 * 1024), %eax |
| 1350 | mov $TOP_MEM, %ecx # MSR:C001_001A |
| 1351 | _WRMSR |
| 1352 | #.endif # End Is_Primary |
| 1353 | #.endif # End Stack_ReEntry |
| 1354 | 0: |
| 1355 | # Clear IORRs (C001_0016-19) and TOM2(C001_001D) for all cores |
| 1356 | xor %eax, %eax |
| 1357 | xor %edx, %edx |
| 1358 | mov $IORR_BASE, %ecx # MSR:C001_0016 - 0019 |
| 1359 | #.while (cl != 1Ah) |
| 1360 | jmp 1f |
| 1361 | 2: |
| 1362 | _WRMSR |
| 1363 | inc %cl |
| 1364 | #.endw |
| 1365 | 1: |
| 1366 | cmp $0x1A, %cl |
| 1367 | jne 2b |
| 1368 | mov $TOP_MEM2, %ecx # MSR:C001_001D |
| 1369 | _WRMSR |
| 1370 | |
| 1371 | # setup MTTRs for stacks |
| 1372 | # A speculative read can be generated by a speculative fetch mis-aligned in a code zone |
| 1373 | # or due to a data zone being interpreted as code. When a speculative read occurs outside a |
| 1374 | # controlled region (intentionally used by software), it could cause an unwanted cache eviction. |
| 1375 | # To prevent speculative reads from causing an eviction, the unused cache ranges are set |
| 1376 | # to UC type. Only the actively used regions (stack, heap) are reflected in the MTRRs. |
| 1377 | # Note: some core stack regions will share an MTRR since the control granularity is much |
| 1378 | # larger than the allocated stack zone. The allocation algorithm must account for this 'extra' |
| 1379 | # space covered by the MTRR when parseling out cache space for the various uses. In some cases |
| 1380 | # this could reduce the amount of EXE cache available to a core. see cpuCacheInit.c |
| 1381 | # |
| 1382 | # Outcome of this block is that: (Note the MTRR map at the top of the file) |
| 1383 | # ebp - start address of stack block |
| 1384 | # ebx - [31:16] - MTRR MSR address |
| 1385 | # - [15:8] - slot# in MTRR register |
| 1386 | # - [7:0] - block size in #4K blocks |
| 1387 | # review: ESI[31:24]=Flags; SI[15,8]= Node#; SI[7,0]= core# (relative to node) |
| 1388 | # |
| 1389 | |
| 1390 | mov %si, %ax # Load node, core |
| 1391 | #.if (al == 0) # Is a core 0? |
| 1392 | or %al, %al |
| 1393 | jne 1f |
| 1394 | #.if (ah == 0) # Is Node 0? (BSP) |
| 1395 | or %ah, %ah |
| 1396 | jne 2f |
| 1397 | # Is BSP, assign a 64K stack |
| 1398 | mov $((AMD_MTRR_FIX64k_00000 << 16) + (3 << 8) + (BSP_STACK_SIZE / 0x1000)), %ebx |
| 1399 | mov $BSP_STACK_BASE_ADDR, %ebp |
| 1400 | jmp 0f |
| 1401 | #.else # node 1 to 7, core0 |
| 1402 | 2: |
| 1403 | # Is a Core0 of secondary node, assign 16K stacks |
| 1404 | mov $AMD_MTRR_FIX16k_80000, %bx |
| 1405 | shl $16, %ebx # |
| 1406 | mov %ah, %bh # Node# is used as slot# |
| 1407 | mov $(CORE0_STACK_SIZE / 0x1000), %bl |
| 1408 | mov %ah, %al # Base = (Node# * Size)# |
| 1409 | mul %bl # |
| 1410 | movzx %ax, %eax # |
| 1411 | shl $12, %eax # Expand back to full byte count (* 4K) |
| 1412 | add $CORE0_STACK_BASE_ADDR, %eax |
| 1413 | mov %eax, %ebp |
| 1414 | #.endif |
| 1415 | jmp 0f |
| 1416 | #.else #core 1 thru core 7 |
| 1417 | 1: |
| 1418 | # Is core 1-7 of any node, assign 4K stacks |
| 1419 | mov $8, %al # CoreIndex = ( (Node# * 8) ... |
| 1420 | mul %ah # |
| 1421 | mov %si, %bx # |
| 1422 | add %bl, %al # ... + Core#)# |
| 1423 | |
| 1424 | mov $AMD_MTRR_FIX64k_00000, %bx |
| 1425 | shl $16, %ebx # |
| 1426 | mov %al, %bh # Slot# = (CoreIndex / 16) + 4# |
| 1427 | shr $4, %bh # |
| 1428 | add $4, %bh # |
| 1429 | mov $(CORE1_STACK_SIZE / 0x1000), %bl |
| 1430 | |
| 1431 | mul %bl # Base = ( (CoreIndex * Size) ... |
| 1432 | movzx %ax, %eax # |
| 1433 | shl $12, %eax # Expand back to full byte count (* 4K) |
| 1434 | add $CORE1_STACK_BASE_ADDR, %eax # ... + Base_Addr)# |
| 1435 | mov %eax, %ebp |
| 1436 | #.endif |
| 1437 | 0: |
| 1438 | |
| 1439 | # Now set the MTRR. Add this to already existing settings (don't clear any MTRR) |
| 1440 | mov $WB_DRAM_TYPE, %edi # Load Cache type in 1st slot |
| 1441 | mov %bh, %cl # ShiftCount = ((slot# ... |
| 1442 | and $0x03, %cl # ... % 4) ... |
| 1443 | shl $0x03, %cl # ... * 8)# |
| 1444 | shl %cl, %edi # Cache type is now in correct position |
| 1445 | ror $16, %ebx # Get the MTRR address |
| 1446 | movzx %bx, %ecx # |
| 1447 | rol $16, %ebx # Put slot# & size back in BX |
| 1448 | _RDMSR # Read-modify-write the MSR |
| 1449 | #.if (bh < 4) # Is value in lower or upper half of MSR? |
| 1450 | cmp $4, %bh |
| 1451 | jae 1f |
| 1452 | or %edi, %eax # |
| 1453 | jmp 0f |
| 1454 | #.else |
| 1455 | 1: # |
| 1456 | or %edi, %edx # |
| 1457 | #.endif # |
| 1458 | 0: |
| 1459 | _WRMSR # |
| 1460 | |
| 1461 | # Enable MTRR defaults as UC type |
| 1462 | mov $AMD_MTRR_DEFTYPE, %ecx # MSR:0000_02FF |
| 1463 | _RDMSR # Read-modify-write the MSR |
| 1464 | bts $MTRR_DEF_TYPE_EN, %eax # MtrrDefTypeEn |
| 1465 | bts $MTRR_DEF_TYPE_FIX_EN, %eax # MtrrDefTypeFixEn |
| 1466 | _WRMSR |
| 1467 | |
| 1468 | # Close the modification window on the Fixed MTRRs |
| 1469 | mov $MTRR_SYS_CFG, %ecx # MSR:0C001_0010 |
| 1470 | _RDMSR |
| 1471 | bts $MTRR_FIX_DRAM_EN, %eax # MtrrFixDramEn |
| 1472 | bts $MTRR_VAR_DRAM_EN, %eax # variable MTRR enable bit |
| 1473 | btr $MTRR_FIX_DRAM_MOD_EN, %eax # Turn off modification enable bit |
| 1474 | _WRMSR |
| 1475 | |
| 1476 | # Enable caching in CR0 |
| 1477 | mov %cr0, %eax # Enable WT/WB cache |
| 1478 | btr $CR0_PG, %eax # Make sure paging is disabled |
| 1479 | btr $CR0_CD, %eax # Clear CR0 NW and CD |
| 1480 | btr $CR0_NW, %eax |
| 1481 | mov %eax, %cr0 |
| 1482 | |
| 1483 | # Use the Stack Base & size to calculate SS and ESP values |
| 1484 | # review: |
| 1485 | # esi[31:24]=Flags; esi[15,8]= Node#; esi[7,0]= core# (relative to node) |
| 1486 | # ebp - start address of stack block |
| 1487 | # ebx - [31:16] - MTRR MSR address |
| 1488 | # - [15:8] - slot# in MTRR register |
| 1489 | # - [7:0] - block size in #4K blocks |
| 1490 | # |
| 1491 | mov %ebp, %esp # Initialize the stack pointer |
| 1492 | mov %esp, %edi # Copy the stack start to edi |
| 1493 | movzx %bl, %bx |
| 1494 | movzx %bx, %ebx # Clear upper ebx, don't need MSR addr anymore |
| 1495 | shl $12, %ebx # Make size full byte count (* 4K) |
| 1496 | add %ebx, %esp # Set the Stack Pointer as full linear address |
| 1497 | sub $4, %esp |
| 1498 | # |
| 1499 | # review: |
| 1500 | # esi[31:24]=Flags; esi[15,8]= Node#; esi[7,0]= core# (relative to node) |
| 1501 | # edi - 32b start address of stack block |
| 1502 | # ebx - size of stack block |
| 1503 | # esp - 32b linear stack pointer |
| 1504 | # |
| 1505 | |
| 1506 | # Determine mode for SS base; |
| 1507 | mov %cr0, %ecx # Check for 32-bit protect mode |
| 1508 | bt $CR0_PE, %ecx # |
| 1509 | #.if (!carry?) # PE=0 means real mode |
| 1510 | jc Protected32Mode |
| 1511 | mov %cs, %cx # PE=1 |
| 1512 | cmp $0x0D000, %cx # Check for CS |
| 1513 | jb Protected32Mode # If CS < D000, it is a selector instead of a segment |
| 1514 | # alter SS:ESP for 16b Real Mode: |
| 1515 | Real16bMode: |
| 1516 | mov %edi, %eax |
| 1517 | shr $4, %eax # Create a Real Mode segment for ss, ds, es |
| 1518 | mov %ax, %ss |
| 1519 | mov %ax, %ds |
| 1520 | mov %ax, %es |
| 1521 | shl $4, %eax |
| 1522 | sub %eax, %edi # Adjust the clearing pointer for Seg:Offset mode |
| 1523 | mov %ebx, %esp # Make SP an offset from SS |
| 1524 | sub $4, %esp # |
| 1525 | # .endif # endif |
| 1526 | # #else |
| 1527 | # Default is to use Protected 32b Mode |
| 1528 | #.endif |
| 1529 | ; |
| 1530 | Protected32Mode: |
| 1531 | # |
| 1532 | # Clear The Stack |
| 1533 | # Now that we have set the location and the MTRRs, initialize the cache by |
| 1534 | # reading then writing to zero all of the stack area. |
| 1535 | # review: |
| 1536 | # ss - Stack base |
| 1537 | # esp - stack pointer |
| 1538 | # ebx - size of stack block |
| 1539 | # esi[31:24]=Flags; esi[15,8]= Node#; esi[7,0]= core# (relative to node) |
| 1540 | # edi - address of start of stack block |
| 1541 | # |
| 1542 | |
| 1543 | ClearTheStack: # Stack base is in SS, stack pointer is in ESP |
| 1544 | shr $2, %ebx # ebx = stack block size in dwords |
| 1545 | mov %bx, %cx # |
| 1546 | # Check our flags - Don't clear an existing stack |
| 1547 | #.if ( !(esi & 0FF000000h)) # Check our flags |
| 1548 | test $(1 << FLAG_STACK_REENTRY), %esi |
| 1549 | jne 1f |
| 1550 | cld |
| 1551 | mov %edi, %esi |
| 1552 | rep lodsl (%esi) # Pre-load the range |
| 1553 | xor %eax, %eax |
| 1554 | mov %bx, %cx |
| 1555 | mov %edi, %esi # Preserve base for push on stack |
| 1556 | rep stosl (%edi) # Clear the range |
| 1557 | movl $0x0ABCDDCBA, (%esp) # Put marker in top stack dword |
| 1558 | shl $2, %ebx # Put stack size and base |
| 1559 | push %ebx # in top of stack |
| 1560 | push %esi |
| 1561 | |
| 1562 | mov %ebx, %ecx # Return size of stack in bytes |
| 1563 | xor %eax, %eax # eax = 0 : no error return code |
| 1564 | jmp 0f |
| 1565 | #.else |
| 1566 | 1: |
| 1567 | movzx %cx, %ecx |
| 1568 | shl $2, %ecx # Return size of stack in bytes |
| 1569 | mov %esi, %eax |
| 1570 | shr $24, %eax # Keep the flags as part of the error report |
| 1571 | or $0x40000000, %eax # eax = AGESA_WARNING (Stack has already been set up) |
| 1572 | #.endif |
| 1573 | 0: |
| 1574 | |
| 1575 | movd %mm0, %ebx # Restore return address |
| 1576 | movd %mm1, %ebp |
| 1577 | .endm |
| 1578 | |
| 1579 | /***************************************************************************** |
| 1580 | * AMD_DISABLE_STACK: Destroy the stack inside the cache. This routine |
| 1581 | * should only be executed on the BSP |
| 1582 | * |
| 1583 | * In: |
| 1584 | * none |
| 1585 | * |
| 1586 | * Out: |
| 1587 | * EAX = AGESA_SUCCESS |
| 1588 | * |
| 1589 | * Preserved: |
| 1590 | * ebx |
| 1591 | * Destroyed: |
| 1592 | * eax, ecx, edx, esp |
| 1593 | *****************************************************************************/ |
| 1594 | .macro AMD_DISABLE_STACK |
| 1595 | |
| 1596 | mov %ebx, %esp # Save return address |
| 1597 | |
| 1598 | # get node/core/flags of current executing core |
| 1599 | GET_NODE_ID_CORE_ID # Sets ESI[15,8]= Node#; ESI[7,0]= core# (relative to node) |
| 1600 | |
| 1601 | # Turn on modification enable bit |
| 1602 | mov $MTRR_SYS_CFG, %ecx # MSR:C001_0010 |
| 1603 | _RDMSR |
| 1604 | bts $MTRR_FIX_DRAM_MOD_EN, %eax # Enable modifications |
| 1605 | _WRMSR |
| 1606 | |
| 1607 | # Set lower 640K MTRRs for Write-Back memory caching |
| 1608 | mov $AMD_MTRR_FIX64k_00000, %ecx |
| 1609 | mov $0x1E1E1E1E, %eax |
| 1610 | mov %eax, %edx |
| 1611 | _WRMSR # 0 - 512K = WB Mem |
| 1612 | mov $AMD_MTRR_FIX16k_80000, %ecx |
| 1613 | _WRMSR # 512K - 640K = WB Mem |
| 1614 | |
| 1615 | # Turn off modification enable bit |
| 1616 | mov $MTRR_SYS_CFG, %ecx # MSR:C001_0010 |
| 1617 | _RDMSR |
| 1618 | btr $MTRR_FIX_DRAM_MOD_EN, %eax # Disable modification |
| 1619 | _WRMSR |
| 1620 | |
| 1621 | AMD_DISABLE_STACK_FAMILY_HOOK # Re-Enable 'normal' cache operations |
| 1622 | |
| 1623 | mov %esp, %ebx |
| 1624 | xor %eax, %eax |
| 1625 | |
| 1626 | .endm |
| 1627 | |