[mirror_edk2.git] / UefiCpuPkg / PiSmmCpuDxeSmm / Ia32 / MpFuncs.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
# This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php.\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   MpFuncs.S\r
#\r
# Abstract:\r
#\r
#   This is the assembly code for Multi-processor S3 support\r
#\r
#------------------------------------------------------------------------------\r
\r
.equ                   VacantFlag,       0x0\r
.equ                   NotVacantFlag,    0xff\r
\r
.equ                   LockLocation,     RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
.equ                   StackStart,       RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x04\r
.equ                   StackSize,        RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x08\r
.equ                   RendezvousProc,   RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x0C\r
.equ                   GdtrProfile,      RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x10\r
.equ                   IdtrProfile,      RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x16\r
.equ                   BufferStart,      RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x1C\r
\r
#-------------------------------------------------------------------------------------\r
#RendezvousFunnelProc  procedure follows. All APs execute their procedure. This\r
#procedure serializes all the AP processors through an Init sequence. It must be\r
#noted that APs arrive here very raw...ie: real mode, no stack.\r
#ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC\r
#IS IN MACHINE CODE.\r
#-------------------------------------------------------------------------------------\r
#RendezvousFunnelProc (&WakeUpBuffer,MemAddress);\r
\r
ASM_GLOBAL ASM_PFX(RendezvousFunnelProc)\r
ASM_PFX(RendezvousFunnelProc):\r
RendezvousFunnelProcStart:\r
\r
# At this point CS = 0x(vv00) and ip= 0x0.\r
\r
        .byte 0x8c,0xc8               # mov        ax,  cs\r
        .byte 0x8e,0xd8               # mov        ds,  ax\r
        .byte 0x8e,0xc0               # mov        es,  ax\r
        .byte 0x8e,0xd0               # mov        ss,  ax\r
        .byte 0x33,0xc0               # xor        ax,  ax\r
        .byte 0x8e,0xe0               # mov        fs,  ax\r
        .byte 0x8e,0xe8               # mov        gs,  ax\r
\r
flat32Start:\r
\r
        .byte 0xBE\r
        .word BufferStart\r
        .byte 0x66,0x8B,0x14          # mov        edx,dword ptr [si]          ; EDX is keeping the start address of wakeup buffer\r
\r
        .byte 0xBE\r
        .word GdtrProfile\r
        .byte 0x66                    # db         66h\r
        .byte 0x2E,0xF,0x1,0x14       # lgdt       fword ptr cs:[si]\r
\r
        .byte 0xBE\r
        .word IdtrProfile\r
        .byte 0x66                    # db         66h\r
        .byte 0x2E,0xF,0x1,0x1C       # lidt       fword ptr cs:[si]\r
\r
        .byte 0x33,0xC0               # xor        ax,  ax\r
        .byte 0x8E,0xD8               # mov        ds,  ax\r
\r
        .byte 0xF,0x20,0xC0           # mov        eax, cr0                    ; Get control register 0\r
        .byte 0x66,0x83,0xC8,0x1      # or         eax, 000000001h             ; Set PE bit (bit #0)\r
        .byte 0xF,0x22,0xC0           # mov        cr0, eax\r
\r
FLAT32_JUMP:\r
\r
        .byte 0x66,0x67,0xEA          # far jump\r
        .long 0x0                     # 32-bit offset\r
        .word 0x20                    # 16-bit selector\r
\r
PMODE_ENTRY:                          # protected mode entry point\r
\r
        movw        $0x8,%ax\r
        .byte       0x66\r
        movw        %ax,%ds\r
        .byte       0x66\r
        movw        %ax,%es\r
        .byte       0x66\r
        movw        %ax,%fs\r
        .byte       0x66\r
        movw        %ax,%gs\r
        .byte       0x66\r
        movw        %ax,%ss           # Flat mode setup.\r
\r
        movl        %edx,%esi\r
\r
        movl        %esi,%edi\r
        addl        $LockLocation, %edi\r
        movb        $NotVacantFlag, %al\r
TestLock:\r
        xchgb       (%edi), %al\r
        cmpb        $NotVacantFlag, %al\r
        jz          TestLock\r
\r
ProgramStack:\r
\r
        movl        %esi,%edi\r
        addl        $StackSize, %edi\r
        movl        (%edi),%eax\r
        movl        %esi,%edi\r
        addl        $StackStart, %edi\r
        addl        (%edi),%eax\r
        movl        %eax,%esp\r
        movl        %eax,(%edi)\r
\r
Releaselock:\r
\r
        movb        $VacantFlag, %al\r
        movl        %esi,%edi\r
        addl        $LockLocation, %edi\r
        xchgb       (%edi), %al\r
\r
        #\r
        # Call assembly function to initialize FPU.\r
        #\r
        lea         ASM_PFX(InitializeFloatingPointUnits), %ebx\r
        call        *%ebx\r
        #\r
        # Call C Function\r
        #\r
        movl        %esi,%edi\r
        addl        $RendezvousProc, %edi\r
        movl        (%edi),%eax\r
\r
        testl       %eax,%eax\r
        jz          GoToSleep\r
        call        *%eax                         # Call C function\r
\r
GoToSleep:\r
        cli\r
        hlt\r
        jmp         GoToSleep\r
\r
RendezvousFunnelProcEnd:\r
#-------------------------------------------------------------------------------------\r
#  AsmGetAddressMap (&AddressMap);\r
#-------------------------------------------------------------------------------------\r
ASM_GLOBAL ASM_PFX(AsmGetAddressMap)\r
ASM_PFX(AsmGetAddressMap):\r
\r
        pushal\r
        movl        %esp,%ebp\r
\r
        movl        0x24(%ebp), %ebx\r
        movl        $RendezvousFunnelProcStart, (%ebx)\r
        movl        $(PMODE_ENTRY - RendezvousFunnelProcStart), 0x4(%ebx)\r
        movl        $(FLAT32_JUMP - RendezvousFunnelProcStart), 0x8(%ebx)\r
        movl        $(RendezvousFunnelProcEnd - RendezvousFunnelProcStart), 0x0c(%ebx)\r
\r
        popal\r
        ret\r
Commit	Line	Data
7947da3c MK	1	#------------------------------------------------------------------------------\r
	2	#\r
	3	# Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
	4	# This program and the accompanying materials\r
	5	# are licensed and made available under the terms and conditions of the BSD License\r
	6	# which accompanies this distribution. The full text of the license may be found at\r
	7	# http://opensource.org/licenses/bsd-license.php.\r
	8	#\r
	9	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	10	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	11	#\r
	12	# Module Name:\r
	13	#\r
	14	# MpFuncs.S\r
	15	#\r
	16	# Abstract:\r
	17	#\r
	18	# This is the assembly code for Multi-processor S3 support\r
	19	#\r
	20	#------------------------------------------------------------------------------\r
	21	\r
	22	.equ VacantFlag, 0x0\r
	23	.equ NotVacantFlag, 0xff\r
	24	\r
	25	.equ LockLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart\r
	26	.equ StackStart, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x04\r
	27	.equ StackSize, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x08\r
	28	.equ RendezvousProc, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x0C\r
	29	.equ GdtrProfile, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x10\r
	30	.equ IdtrProfile, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x16\r
	31	.equ BufferStart, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x1C\r
	32	\r
	33	#-------------------------------------------------------------------------------------\r
	34	#RendezvousFunnelProc procedure follows. All APs execute their procedure. This\r
	35	#procedure serializes all the AP processors through an Init sequence. It must be\r
	36	#noted that APs arrive here very raw...ie: real mode, no stack.\r
	37	#ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC\r
	38	#IS IN MACHINE CODE.\r
	39	#-------------------------------------------------------------------------------------\r
	40	#RendezvousFunnelProc (&WakeUpBuffer,MemAddress);\r
	41	\r
	42	ASM_GLOBAL ASM_PFX(RendezvousFunnelProc)\r
	43	ASM_PFX(RendezvousFunnelProc):\r
	44	RendezvousFunnelProcStart:\r
	45	\r
	46	# At this point CS = 0x(vv00) and ip= 0x0.\r
	47	\r
	48	.byte 0x8c,0xc8 # mov ax, cs\r
	49	.byte 0x8e,0xd8 # mov ds, ax\r
	50	.byte 0x8e,0xc0 # mov es, ax\r
	51	.byte 0x8e,0xd0 # mov ss, ax\r
	52	.byte 0x33,0xc0 # xor ax, ax\r
	53	.byte 0x8e,0xe0 # mov fs, ax\r
	54	.byte 0x8e,0xe8 # mov gs, ax\r
	55	\r
	56	flat32Start:\r
	57	\r
	58	.byte 0xBE\r
	59	.word BufferStart\r
	60	.byte 0x66,0x8B,0x14 # mov edx,dword ptr [si] ; EDX is keeping the start address of wakeup buffer\r
	61	\r
	62	.byte 0xBE\r
	63	.word GdtrProfile\r
	64	.byte 0x66 # db 66h\r
65	.byte 0x2E,0xF,0x1,0x14 # lgdt fword ptr cs:[si]\r
66	\r
67	.byte 0xBE\r
68	.word IdtrProfile\r
69	.byte 0x66 # db 66h\r
70	.byte 0x2E,0xF,0x1,0x1C # lidt fword ptr cs:[si]\r
71	\r
72	.byte 0x33,0xC0 # xor ax, ax\r
73	.byte 0x8E,0xD8 # mov ds, ax\r
74	\r
75	.byte 0xF,0x20,0xC0 # mov eax, cr0 ; Get control register 0\r
76	.byte 0x66,0x83,0xC8,0x1 # or eax, 000000001h ; Set PE bit (bit #0)\r
77	.byte 0xF,0x22,0xC0 # mov cr0, eax\r
78	\r
79	FLAT32_JUMP:\r
80	\r
81	.byte 0x66,0x67,0xEA # far jump\r
82	.long 0x0 # 32-bit offset\r
83	.word 0x20 # 16-bit selector\r
84	\r
85	PMODE_ENTRY: # protected mode entry point\r
86	\r
87	movw $0x8,%ax\r
88	.byte 0x66\r
89	movw %ax,%ds\r
90	.byte 0x66\r
91	movw %ax,%es\r
92	.byte 0x66\r
93	movw %ax,%fs\r
94	.byte 0x66\r
95	movw %ax,%gs\r
96	.byte 0x66\r
97	movw %ax,%ss # Flat mode setup.\r
98	\r
99	movl %edx,%esi\r
100	\r
101	movl %esi,%edi\r
102	addl $LockLocation, %edi\r
103	movb $NotVacantFlag, %al\r
104	TestLock:\r
105	xchgb (%edi), %al\r
106	cmpb $NotVacantFlag, %al\r
107	jz TestLock\r
108	\r
109	ProgramStack:\r
110	\r
111	movl %esi,%edi\r
112	addl $StackSize, %edi\r
113	movl (%edi),%eax\r
114	movl %esi,%edi\r
115	addl $StackStart, %edi\r
116	addl (%edi),%eax\r
117	movl %eax,%esp\r
118	movl %eax,(%edi)\r
119	\r
120	Releaselock:\r
121	\r
122	movb $VacantFlag, %al\r
123	movl %esi,%edi\r
124	addl $LockLocation, %edi\r
125	xchgb (%edi), %al\r
126	\r
127	#\r
128	# Call assembly function to initialize FPU.\r
129	#\r
130	lea ASM_PFX(InitializeFloatingPointUnits), %ebx\r
131	call *%ebx\r
132	#\r
133	# Call C Function\r
134	#\r
135	movl %esi,%edi\r
136	addl $RendezvousProc, %edi\r
137	movl (%edi),%eax\r
138	\r
139	testl %eax,%eax\r
140	jz GoToSleep\r
141	call *%eax # Call C function\r
142	\r
143	GoToSleep:\r
144	cli\r
145	hlt\r
146	jmp GoToSleep\r
147	\r
148	RendezvousFunnelProcEnd:\r
149	#-------------------------------------------------------------------------------------\r
150	# AsmGetAddressMap (&AddressMap);\r
151	#-------------------------------------------------------------------------------------\r
152	ASM_GLOBAL ASM_PFX(AsmGetAddressMap)\r
153	ASM_PFX(AsmGetAddressMap):\r
154	\r
155	pushal\r
156	movl %esp,%ebp\r
157	\r
158	movl 0x24(%ebp), %ebx\r
159	movl $RendezvousFunnelProcStart, (%ebx)\r
160	movl $(PMODE_ENTRY - RendezvousFunnelProcStart), 0x4(%ebx)\r
161	movl $(FLAT32_JUMP - RendezvousFunnelProcStart), 0x8(%ebx)\r
162	movl $(RendezvousFunnelProcEnd - RendezvousFunnelProcStart), 0x0c(%ebx)\r
163	\r
164	popal\r
165	ret\r