1 # 2 # 3 # Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved 4 # 5 # This program and the accompanying materials are licensed and made available under 7 # the terms and conditions of the BSD License that accompanies this distribution. 9 # The full text of the license may be found at 11 # http://opensource.org/licenses/bsd-license.php. 13 # 15 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 17 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 19 # 21 # 23 # 24 #Module Name: 25 # 26 # CpuIA32.c 27 # 28 #Abstract: 29 # 30 #--*/ 31 32 ##include "CpuIA32.h" 33 #include "EfiBind.h" 34 35 #--------------------------------------------------------------------------- 36 .586p: 37 #.MODEL flat,C 38 .code: 39 40 #--------------------------------------------------------------------------- 41 42 .globl ASM_PFX(EfiHalt) 43 .globl ASM_PFX(EfiWbinvd) 44 .globl ASM_PFX(EfiInvd) 45 .globl ASM_PFX(EfiCpuid) 46 .globl ASM_PFX(EfiReadMsr) 47 .globl ASM_PFX(EfiWriteMsr) 48 .globl ASM_PFX(EfiReadTsc) 49 .globl ASM_PFX(EfiDisableCache) 50 .globl ASM_PFX(EfiEnableCache) 51 .globl ASM_PFX(EfiGetEflags) 52 .globl ASM_PFX(EfiDisableInterrupts) 53 .globl ASM_PFX(EfiEnableInterrupts) 54 .globl ASM_PFX(EfiCpuidExt) 55 56 57 #VOID 58 #EfiHalt ( 59 # VOID 60 #) 61 ASM_PFX(EfiHalt): 62 hlt 63 ret 64 #EfiHalt ENDP 65 66 #VOID 67 #EfiWbinvd ( 68 # VOID 69 #) 70 ASM_PFX(EfiWbinvd): 71 wbinvd 72 ret 73 #EfiWbinvd ENDP 74 75 #VOID 76 #EfiInvd ( 77 # VOID 78 #) 79 ASM_PFX(EfiInvd): 80 invd 81 ret 82 #EfiInvd ENDP 83 84 #VOID 85 #EfiCpuid (IN UINT32 RegisterInEax, 86 # OUT EFI_CPUID_REGISTER *Reg OPTIONAL) 87 ASM_PFX(EfiCpuid): 88 pushl %ebp 89 movl %esp, %ebp 90 pushl %ebx 91 pushl %esi 92 pushl %edi 93 pushal 94 95 movl 8(%ebp), %eax #RegisterInEax 96 cpuid 97 cmpl $0, 0xC(%ebp) # Reg 98 je L1 99 movl 0xC(%ebp), %edi # Reg 100 101 movl %eax, (%edi) # Reg->RegEax 102 movl %ebx, 4(%edi) # Reg->RegEbx 103 movl %ecx, 8(%edi) # Reg->RegEcx 104 movl %edx, 0xC(%edi) # Reg->RegEdx 105 106 L1: 107 popal 108 popl %edi 109 popl %esi 110 popl %ebx 111 popl %ebp 112 113 ret 114 #EfiCpuid ENDP 115 116 117 #UINT64 118 #EfiReadMsr ( 119 # IN UINT32 Index 120 # ); 121 ASM_PFX(EfiReadMsr): 122 movl 4(%esp), %ecx # Index 123 rdmsr 124 ret 125 #EfiReadMsr ENDP 126 127 #VOID 128 #EfiWriteMsr ( 129 # IN UINT32 Index, 130 # IN UINT64 Value 131 # ); 132 ASM_PFX(EfiWriteMsr): 133 movl 4(%esp), %ecx # Index 134 movl 8(%esp), %eax # DWORD PTR Value[0] 135 movl 0xC(%esp), %edx # DWORD PTR Value[4] 136 wrmsr 137 ret 138 #EfiWriteMsr ENDP 139 140 #UINT64 141 #EfiReadTsc ( 142 # VOID 143 # ) 144 ASM_PFX(EfiReadTsc): 145 rdtsc 146 ret 147 #EfiReadTsc ENDP 148 149 #VOID 150 #EfiDisableCache ( 151 # VOID 152 #) 153 ASM_PFX(EfiDisableCache): 154 movl %cr0, %eax 155 bswapl %eax 156 andb $0x60, %al 157 cmpb $0x60, %al 158 je L2 159 movl %cr0, %eax 160 orl $0x60000000, %eax 161 movl %eax, %cr0 162 wbinvd 163 L2: 164 ret 165 #EfiDisableCache ENDP 166 167 #VOID 168 #EfiEnableCache ( 169 # VOID 170 # ) 171 ASM_PFX(EfiEnableCache): 172 wbinvd 173 movl %cr0, %eax 174 andl $0x9fffffff, %eax 175 movl %eax, %cr0 176 ret 177 #EfiEnableCache ENDP 178 179 #UINT32 180 #EfiGetEflags ( 181 # VOID 182 # ) 183 ASM_PFX(EfiGetEflags): 184 pushfl 185 popl %eax 186 ret 187 #EfiGetEflags ENDP 188 189 #VOID 190 #EfiDisableInterrupts ( 191 # VOID 192 # ) 193 ASM_PFX(EfiDisableInterrupts): 194 cli 195 ret 196 #EfiDisableInterrupts ENDP 197 198 #VOID 199 #EfiEnableInterrupts ( 200 # VOID 201 # ) 202 ASM_PFX(EfiEnableInterrupts): 203 sti 204 ret 205 #EfiEnableInterrupts ENDP 206 207 #VOID 208 #EfiCpuidExt ( 209 # IN UINT32 RegisterInEax, 210 # IN UINT32 CacheLevel, 211 # OUT EFI_CPUID_REGISTER *Regs 212 # ) 213 ASM_PFX(EfiCpuidExt): 214 push %ebx 215 push %edi 216 push %esi 217 pushal 218 219 movl 0x30(%esp), %eax # RegisterInEax 220 movl 0x34(%esp), %ecx # CacheLevel 221 cpuid 222 movl 0x38(%esp), %edi # DWORD PTR Regs 223 224 movl %eax, (%edi) # Reg->RegEax 225 movl %ebx, 4(%edi) # Reg->RegEbx 226 movl %ecx, 8(%edi) # Reg->RegEcx 227 movl %edx, 0xC(%edi) # Reg->RegEdx 228 229 popal 230 pop %esi 231 pop %edi 232 pop %ebx 233 ret 234 #EfiCpuidExt ENDP 235 236 237 238
