diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f15tn/Proc/CPU/cahalt.asm')
| -rw-r--r-- | src/vendorcode/amd/agesa/f15tn/Proc/CPU/cahalt.asm | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f15tn/Proc/CPU/cahalt.asm b/src/vendorcode/amd/agesa/f15tn/Proc/CPU/cahalt.asm new file mode 100644 index 0000000000..a41683f66c --- /dev/null +++ b/src/vendorcode/amd/agesa/f15tn/Proc/CPU/cahalt.asm @@ -0,0 +1,388 @@ +;/** +; * @file +; * +; * Agesa pre-memory miscellaneous support, including ap halt loop. +; * +; * @xrefitem bom "File Content Label" "Release Content" +; * @e project: AGESA +; * @e sub-project: CPU +; * @e \$Revision: 63425 $ @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $ +; */ +;***************************************************************************** +; +; Copyright 2008 - 2012 ADVANCED MICRO DEVICES, INC. All Rights Reserved. +; +; AMD is granting you permission to use this software (the Materials) +; pursuant to the terms and conditions of your Software License Agreement +; with AMD. This header does *NOT* give you permission to use the Materials +; or any rights under AMD's intellectual property. Your use of any portion +; of these Materials shall constitute your acceptance of those terms and +; conditions. If you do not agree to the terms and conditions of the Software +; License Agreement, please do not use any portion of these Materials. +; +; CONFIDENTIALITY: The Materials and all other information, identified as +; confidential and provided to you by AMD shall be kept confidential in +; accordance with the terms and conditions of the Software License Agreement. +; +; LIMITATION OF LIABILITY: THE MATERIALS AND ANY OTHER RELATED INFORMATION +; PROVIDED TO YOU BY AMD ARE PROVIDED "AS IS" WITHOUT ANY EXPRESS OR IMPLIED +; WARRANTY OF ANY KIND, INCLUDING BUT NOT LIMITED TO WARRANTIES OF +; MERCHANTABILITY, NONINFRINGEMENT, TITLE, FITNESS FOR ANY PARTICULAR PURPOSE, +; OR WARRANTIES ARISING FROM CONDUCT, COURSE OF DEALING, OR USAGE OF TRADE. +; IN NO EVENT SHALL AMD OR ITS LICENSORS BE LIABLE FOR ANY DAMAGES WHATSOEVER +; (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS +; INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF AMD'S NEGLIGENCE, +; GROSS NEGLIGENCE, THE USE OF OR INABILITY TO USE THE MATERIALS OR ANY OTHER +; RELATED INFORMATION PROVIDED TO YOU BY AMD, EVEN IF AMD HAS BEEN ADVISED OF +; THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME JURISDICTIONS PROHIBIT THE +; EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, +; THE ABOVE LIMITATION MAY NOT APPLY TO YOU. +; +; AMD does not assume any responsibility for any errors which may appear in +; the Materials or any other related information provided to you by AMD, or +; result from use of the Materials or any related information. +; +; You agree that you will not reverse engineer or decompile the Materials. +; +; NO SUPPORT OBLIGATION: AMD is not obligated to furnish, support, or make any +; further information, software, technical information, know-how, or show-how +; available to you. Additionally, AMD retains the right to modify the +; Materials at any time, without notice, and is not obligated to provide such +; modified Materials to you. +; +; U.S. GOVERNMENT RESTRICTED RIGHTS: The Materials are provided with +; "RESTRICTED RIGHTS." Use, duplication, or disclosure by the Government is +; subject to the restrictions as set forth in FAR 52.227-14 and +; DFAR252.227-7013, et seq., or its successor. Use of the Materials by the +; Government constitutes acknowledgement of AMD's proprietary rights in them. +; +; EXPORT ASSURANCE: You agree and certify that neither the Materials, nor any +; direct product thereof will be exported directly or indirectly, into any +; country prohibited by the United States Export Administration Act and the +; regulations thereunder, without the required authorization from the U.S. +; government nor will be used for any purpose prohibited by the same. +;***************************************************************************** + + .XLIST + INCLUDE agesa.inc + INCLUDE cpcarmac.inc + .LIST + + .586P + +;=============================================== +;=============================================== +;== +;== M E M O R Y A B S E N T S E G M E N T +;== +;=============================================== +;=============================================== + .MODEL flat + .CODE +;====================================================================== +; ExecuteFinalHltInstruction: Disables the stack and performs +; a hlt instruction on an AP. +; +; In: +; None +; +; Out: +; None +; +; Destroyed: +; eax, ebx, ecx, edx, esp +; +;====================================================================== +PUBLIC ExecuteFinalHltInstruction +ExecuteFinalHltInstruction PROC NEAR C USES ESI EDI HaltFlags:DWORD, ApMtrrSettingList:PTR, StandardHeader:PTR + + mov esi, StandardHeader ; The code must reference all parameters to avoid a build warning + mov esi, HaltFlags + mov edi, ApMtrrSettingList + ; Do these special steps in case if the core is part of a compute unit + ; Note: The following bits are family specific flags, that gets set during build time, + ; and indicates things like "family cache control methodology", etc. + ; esi bit0 = 0 -> not a Primary core + ; esi bit0 = 1 -> Primary core + ; esi bit1 = 0 -> Cache disable + ; esi bit1 = 1 -> Cache enable + .if (esi & 2h) + ; Set CombineCr0Cd bit + mov ecx, CU_CFG3 + _RDMSR + bts edx, (COMBINE_CR0_CD - 32) + _WRMSR + ; Clear the CR0.CD bit + mov eax, CR0 ; Make sure cache is enabled for all APs + btr eax, CR0_CD + btr eax, CR0_NW + mov CR0, eax ; Write back to CR0 + .else + mov eax, CR0 ; Make sure cache is disabled for all APs + bts eax, CR0_CD ; Disable cache + bts eax, CR0_NW + mov CR0, eax ; Write back to CR0 + .endif + + .if (esi & 1h) + ; This core is a primary core and needs to do all the MTRRs, including shared MTRRs. + mov esi, edi ; Get ApMtrrSettingList + + ; Configure the MTRRs on the AP so + ; when it runs remote code it will execute + ; out of RAM instead of ROM. + + ; Disable MTRRs and turn on modification enable bit + mov ecx, MTRR_SYS_CFG + _RDMSR + btr eax, MTRR_VAR_DRAM_EN ; Disable + bts eax, MTRR_FIX_DRAM_MOD_EN ; Enable + btr eax, MTRR_FIX_DRAM_EN ; Disable + bts eax, SYS_UC_LOCK_EN + _WRMSR + + ; Setup default values for Fixed-Sized MTRRs + ; Set 7FFFh-00000h as WB + mov ecx, AMD_AP_MTRR_FIX64k_00000 + mov eax, 1E1E1E1Eh + mov edx, eax + _WRMSR + + ; Set 9FFFFh-80000h also as WB + mov ecx, AMD_AP_MTRR_FIX16k_80000 + _WRMSR + + ; Set BFFFFh-A0000h as Uncacheable Memory-mapped IO + mov ecx, AMD_AP_MTRR_FIX16k_A0000 + xor eax, eax + xor edx, edx + _WRMSR + + ; Set DFFFFh-C0000h as Uncacheable Memory-mapped IO + xor eax, eax + xor edx, edx + mov ecx, AMD_AP_MTRR_FIX4k_C0000 + +CDLoop: + _WRMSR + inc ecx + cmp ecx, AMD_AP_MTRR_FIX4k_D8000 + jbe CDLoop + + ; Set FFFFFh-E0000h as Uncacheable Memory + mov eax, 18181818h + mov edx, eax + + mov ecx, AMD_AP_MTRR_FIX4k_E0000 + +EFLoop: + _WRMSR + inc ecx + cmp ecx, AMD_AP_MTRR_FIX4k_F8000 + jbe EFLoop + + ; If IBV provided settings for Fixed-Sized MTRRs, + ; overwrite the default settings. + .if ((esi != 0) && (esi != 0FFFFFFFFh)) + mov ecx, (AP_MTRR_SETTINGS ptr [esi]).MsrAddr + ; While we are not at the end of the list + .while (ecx != CPU_LIST_TERMINAL) + ; Ensure that the MSR address is valid for Fixed-Sized MTRRs + .if ( ((ecx >= AMD_AP_MTRR_FIX4k_C0000) && (ecx <= AMD_AP_MTRR_FIX4k_F8000)) || \ + (ecx == AMD_AP_MTRR_FIX64k_00000) || (ecx == AMD_AP_MTRR_FIX16k_80000 ) || (ecx == AMD_AP_MTRR_FIX16k_A0000)) + mov eax, dword ptr (AP_MTRR_SETTINGS ptr [esi]).MsrData + mov edx, dword ptr (AP_MTRR_SETTINGS ptr [esi+4]).MsrData + _WRMSR + .endif + add esi, sizeof (AP_MTRR_SETTINGS) + mov ecx, (AP_MTRR_SETTINGS ptr [esi]).MsrAddr + .endw + .endif + + ; Enable fixed-range and variable-range MTRRs + mov ecx, AMD_MTRR_DEFTYPE + _RDMSR + bts eax, MTRR_DEF_TYPE_EN ; MtrrDefTypeEn + bts eax, MTRR_DEF_TYPE_FIX_EN ; MtrrDefTypeFixEn + _WRMSR + + ; Enable Top-of-Memory setting + ; Enable use of RdMem/WrMem bits attributes + mov ecx, MTRR_SYS_CFG + _RDMSR + bts eax, MTRR_VAR_DRAM_EN ; Enable + btr eax, MTRR_FIX_DRAM_MOD_EN ; Disable + bts eax, MTRR_FIX_DRAM_EN ; Enable + _WRMSR + + mov esi, (1 SHL FLAG_IS_PRIMARY) + .else ; end if primary core + xor esi, esi + .endif + ; Make sure not to touch any Shared MSR from this point on + + AMD_DISABLE_STACK_FAMILY_HOOK + + bt esi, FLAG_IS_PRIMARY + .if (carry?) + ; restore variable MTRR6 and MTRR7 to default states + mov ecx, AMD_MTRR_VARIABLE_MASK7 ; clear MTRRPhysBase6 MTRRPhysMask6 + xor eax, eax ; and MTRRPhysBase7 MTRRPhysMask7 + xor edx, edx + .while (cx >= AMD_MTRR_VARIABLE_BASE6) + _WRMSR + dec cx + .endw + .endif + +@@: + cli + hlt + jmp @B ;ExecuteHltInstruction + ret +ExecuteFinalHltInstruction ENDP + +;====================================================================== +; ExecuteHltInstruction: Performs a hlt instruction. +; +; In: +; None +; +; Out: +; None +; +; Destroyed: +; eax, ebx, ecx, edx, esp +; +;====================================================================== +PUBLIC ExecuteHltInstruction +ExecuteHltInstruction PROC NEAR C + cli + hlt + ret +ExecuteHltInstruction ENDP + +;====================================================================== +; NmiHandler: Simply performs an IRET. +; +; In: +; None +; +; Out: +; None +; +; Destroyed: +; None +; +;====================================================================== +PUBLIC NmiHandler +NmiHandler PROC NEAR C + iretd +NmiHandler ENDP + +;====================================================================== +; GetCsSelector: Returns the current protected mode CS selector. +; +; In: +; None +; +; Out: +; None +; +; Destroyed: +; None +; +;====================================================================== +PUBLIC GetCsSelector +GetCsSelector PROC NEAR C, CsSelector:PTR + push ax + push ebx + + call FarCallGetCs + mov ebx, CsSelector + mov [ebx], ax + pop ebx + pop ax + ret +GetCsSelector ENDP + +;====================================================================== +; FarCallGetCs: +; +; In: +; None +; +; Out: +; None +; +; Destroyed: +; none +; +;====================================================================== +FarCallGetCs PROC FAR PRIVATE + + mov ax, ss:[esp + 4] + retf + +FarCallGetCs ENDP + +;====================================================================== +; SetIdtr: +; +; In: +; @param[in] IdtPtr Points to IDT table +; +; Out: +; None +; +; Destroyed: +; none +; +;====================================================================== +PUBLIC SetIdtr +SetIdtr PROC NEAR C USES EBX, IdtPtr:PTR + mov ebx, IdtPtr + lidt fword ptr ss:[ebx] + ret +SetIdtr ENDP + +;====================================================================== +; GetIdtr: +; +; In: +; @param[in] IdtPtr Points to IDT table +; +; Out: +; None +; +; Destroyed: +; none +; +;====================================================================== +PUBLIC GetIdtr +GetIdtr PROC NEAR C USES EBX, IdtPtr:PTR + mov ebx, IdtPtr + sidt fword ptr ss:[ebx] + ret +GetIdtr ENDP + +;====================================================================== +; ExecuteWbinvdInstruction: Performs a wbinvd instruction. +; +; In: +; None +; +; Out: +; None +; +; Destroyed: +; None +; +;====================================================================== +PUBLIC ExecuteWbinvdInstruction +ExecuteWbinvdInstruction PROC NEAR C + wbinvd ; Write back the cache tag RAMs + ret +ExecuteWbinvdInstruction ENDP + +END |