projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 768e2a90 | 1 | #------------------------------------------------------------------------------\r |
| 2 | # IA32 assembly file for AP startup vector.\r | |
| 3 | #\r | |
| 584d5652 HT |
4 | # Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>\r |
| 5 | # This program and the accompanying materials\r | |
| 768e2a90 | 6 | # are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | # which accompanies this distribution. The full text of the license may be found at\r | |
| 8 | # http://opensource.org/licenses/bsd-license.php\r | |
| 9 | #\r | |
| 10 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 11 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 12 | #\r | |
| 13 | #------------------------------------------------------------------------------\r | |
| 14 | \r | |
| 15 | .equ VacantFlag, 0x0\r | |
| 16 | .equ NotVacantFlag, 0xff\r | |
| 17 | \r | |
| 18 | .equ LockLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r | |
| 19 | .equ StackStart, LockLocation + 0x04\r | |
| 20 | .equ StackSize, LockLocation + 0x08\r | |
| 21 | .equ RendezvousProc, LockLocation + 0x0C\r | |
| 22 | .equ GdtrProfile, LockLocation + 0x10\r | |
| 23 | .equ BufferStart, LockLocation + 0x18\r | |
| 24 | \r | |
| 25 | #-------------------------------------------------------------------------------------\r | |
| 26 | #RendezvousFunnelProc procedure follows. All APs execute their procedure. This\r | |
| 27 | #procedure serializes all the AP processors through an Init sequence. It must be\r | |
| 28 | #noted that APs arrive here very raw...ie: real mode, no stack.\r | |
| 29 | #ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC\r | |
| 30 | #IS IN MACHINE CODE.\r | |
| 31 | #-------------------------------------------------------------------------------------\r | |
| 32 | #RendezvousFunnelProc (&WakeUpBuffer,MemAddress);\r | |
| 33 | \r | |
| 34 | ASM_GLOBAL ASM_PFX(RendezvousFunnelProc)\r | |
| 35 | ASM_PFX(RendezvousFunnelProc):\r | |
| 36 | RendezvousFunnelProcStart:\r | |
| 37 | \r | |
| 38 | \r | |
| 39 | # At this point CS = 0x(vv00) and ip= 0x0.\r | |
| 40 | \r | |
| 41 | .byte 0x8c,0xc8 # mov ax, cs\r | |
| 42 | .byte 0x8e,0xd8 # mov ds, ax\r | |
| 43 | .byte 0x8e,0xc0 # mov es, ax\r | |
| 44 | .byte 0x8e,0xd0 # mov ss, ax \r | |
| 45 | .byte 0x33,0xc0 # xor ax, ax\r | |
| 46 | .byte 0x8e,0xe0 # mov fs, ax\r | |
| 47 | .byte 0x8e,0xe8 # mov gs, ax\r | |
| 48 | \r | |
| 49 | # Switch to flat mode.\r | |
| 50 | \r | |
| 51 | .byte 0xBE\r | |
| 52 | .word BufferStart\r | |
| 53 | .byte 0x66,0x8B,0xC # mov ecx,dword ptr [si] ; ECX is keeping the start address of wakeup buffer\r | |
| 54 | \r | |
| 55 | .byte 0xFA # cli\r | |
| 56 | .byte 0xBE\r | |
| 57 | .word GdtrProfile\r | |
| 58 | .byte 0x66 # db 66h\r | |
| 59 | .byte 0x2E,0xF,0x1,0x14 # lgdt fword ptr cs:[si]\r | |
| 60 | \r | |
| 61 | .byte 0x33,0xC0 # xor ax, ax\r | |
| 62 | .byte 0x8E,0xD8 # mov ds, ax\r | |
| 63 | .byte 0xF,0x20,0xC0 # mov eax, cr0 ; Get control register 0\r | |
| 64 | .byte 0x66,0x83,0xC8,0x1 # or eax, 000000001h ; Set PE bit (bit #0)\r | |
| 65 | .byte 0xF,0x22,0xC0 # mov cr0, eax\r | |
| 66 | \r | |
| 67 | \r | |
| 68 | #step-4:\r | |
| 69 | \r | |
| 70 | FLAT32_JUMP:\r | |
| 71 | .byte 0x66\r | |
| 72 | .byte 0x67\r | |
| 73 | .byte 0xEA # far jump\r | |
| 74 | .long 0x0\r | |
| 75 | .word 0x10\r | |
| 76 | \r | |
| 77 | ProtectedModeStart: # protected mode entry point\r | |
| 78 | \r | |
| 79 | movw $0x8,%ax\r | |
| 80 | .byte 0x66\r | |
| 81 | movw %ax,%ds\r | |
| 82 | .byte 0x66\r | |
| 83 | movw %ax,%es\r | |
| 84 | .byte 0x66\r | |
| 85 | movw %ax,%fs\r | |
| 86 | .byte 0x66\r | |
| 87 | movw %ax,%gs\r | |
| 88 | .byte 0x66\r | |
| 89 | movw %ax,%ss # Flat mode setup.\r | |
| 90 | \r | |
| 91 | \r | |
| 92 | movl %esi,%edi\r | |
| 93 | addl $LockLocation, %edi\r | |
| 94 | movb $NotVacantFlag, %al\r | |
| 95 | TestLock:\r | |
| 96 | xchgb (%edi), %al\r | |
| 97 | cmpb $NotVacantFlag, %al\r | |
| 98 | jz TestLock\r | |
| 99 | \r | |
| 100 | ProgramStack:\r | |
| 101 | movl %esi,%edi\r | |
| 102 | addl $StackSize, %edi\r | |
| 103 | movl (%edi), %eax\r | |
| 104 | movl %esi,%edi\r | |
| 105 | addl $StackStart, %edi\r | |
| 106 | addl (%edi), %eax\r | |
| 107 | movl %eax,%esp\r | |
| 108 | movl %eax, (%edi)\r | |
| 109 | \r | |
| 110 | Releaselock:\r | |
| 111 | movb $VacantFlag, %al\r | |
| 112 | movl %esi,%edi\r | |
| 113 | addl $LockLocation, %edi\r | |
| 114 | xchgb (%edi), %al\r | |
| 115 | \r | |
| 116 | #\r | |
| 117 | # Call C Function\r | |
| 118 | #\r | |
| 119 | movl %esi,%edi\r | |
| 120 | addl $RendezvousProc, %edi\r | |
| 121 | movl (%edi), %ebx\r | |
| 122 | \r | |
| 123 | testl %ebx,%ebx\r | |
| 124 | jz GoToSleep\r | |
| 125 | call *%ebx # Call C function\r | |
| 126 | \r | |
| 127 | #Step-6: Sleep\r | |
| 128 | \r | |
| 129 | GoToSleep:\r | |
| 130 | \r | |
| 131 | cli\r | |
| 132 | hlt\r | |
| 133 | jmp GoToSleep\r | |
| 134 | \r | |
| 135 | RendezvousFunnelProcEnd:\r | |
| 136 | #-------------------------------------------------------------------------------------\r | |
| 137 | # AsmGetAddressMap (&AddressMap);\r | |
| 138 | #-------------------------------------------------------------------------------------\r | |
| 139 | ASM_GLOBAL ASM_PFX(AsmGetAddressMap)\r | |
| 140 | ASM_PFX(AsmGetAddressMap):\r | |
| 141 | \r | |
| 142 | pushal\r | |
| 143 | movl %esp,%ebp\r | |
| 144 | \r | |
| 145 | movl 0x24(%ebp), %ebx\r | |
| 146 | movl $RendezvousFunnelProcStart, (%ebx)\r | |
| 147 | movl $(ProtectedModeStart - RendezvousFunnelProcStart), 0x4(%ebx)\r | |
| 148 | movl $(FLAT32_JUMP - RendezvousFunnelProcStart), 0x8(%ebx)\r | |
| 149 | movl $0, 0x0c(%ebx)\r | |
| 150 | movl $0, 0x10(%ebx)\r | |
| 151 | movl $(RendezvousFunnelProcEnd - RendezvousFunnelProcStart), 0x14(%ebx)\r | |
| 152 | \r | |
| 153 | popal\r | |
| 154 | ret\r |