projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 3cbfba02 DW |
1 | #\r |
| 2 | #\r | |
| 3 | # Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved\r | |
| 4 | # \r\r | |
| 5 | # This program and the accompanying materials are licensed and made available under\r\r | |
| 6 | # the terms and conditions of the BSD License that accompanies this distribution. \r\r | |
| 7 | # The full text of the license may be found at \r\r | |
| 8 | # http://opensource.org/licenses/bsd-license.php. \r\r | |
| 9 | # \r\r | |
| 10 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r\r | |
| 11 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r\r | |
| 12 | # \r\r | |
| 13 | #\r | |
| 14 | #\r | |
| 15 | #* Module Name:\r | |
| 16 | #*\r | |
| 17 | #* Cpu.asm\r | |
| 18 | #*\r | |
| 19 | #* Abstract:\r | |
| 20 | #*\r | |
| 21 | #------------------------------------------------------------------------------\r | |
| 22 | ##include <EfiBind.h>\r | |
| 23 | \r | |
| 24 | .globl ASM_PFX(EfiHalt)\r | |
| 25 | .globl ASM_PFX(EfiWbinvd)\r | |
| 26 | .globl ASM_PFX(EfiInvd)\r | |
| 27 | .globl ASM_PFX(EfiCpuid)\r | |
| 28 | .globl ASM_PFX(EfiReadTsc)\r | |
| 29 | .globl ASM_PFX(EfiDisableCache)\r | |
| 30 | .globl ASM_PFX(EfiEnableCache)\r | |
| 31 | .globl ASM_PFX(EfiReadMsr)\r | |
| 32 | .globl ASM_PFX(EfiWriteMsr)\r | |
| 33 | .globl ASM_PFX(EfiGetEflags)\r | |
| 34 | .globl ASM_PFX(EfiDisableInterrupts)\r | |
| 35 | .globl ASM_PFX(EfiEnableInterrupts)\r | |
| 36 | .globl ASM_PFX(EfiCpuidExt)\r | |
| 37 | \r | |
| 38 | .text\r | |
| 39 | \r | |
| 40 | \r | |
| 41 | #------------------------------------------------------------------------------\r | |
| 42 | # VOID\r | |
| 43 | # EfiHalt (\r | |
| 44 | # VOID\r | |
| 45 | # )\r | |
| 46 | #------------------------------------------------------------------------------\r | |
| 47 | ASM_PFX(EfiHalt):\r | |
| 48 | hlt\r | |
| 49 | retq\r | |
| 50 | \r | |
| 51 | \r | |
| 52 | #------------------------------------------------------------------------------\r | |
| 53 | # VOID\r | |
| 54 | # EfiWbinvd (\r | |
| 55 | # VOID\r | |
| 56 | # )\r | |
| 57 | #------------------------------------------------------------------------------\r | |
| 58 | ASM_PFX(EfiWbinvd):\r | |
| 59 | wbinvd\r | |
| 60 | retq\r | |
| 61 | \r | |
| 62 | \r | |
| 63 | #------------------------------------------------------------------------------\r | |
| 64 | # VOID\r | |
| 65 | # EfiInvd (\r | |
| 66 | # VOID\r | |
| 67 | # )\r | |
| 68 | #------------------------------------------------------------------------------\r | |
| 69 | ASM_PFX(EfiInvd):\r | |
| 70 | invd\r | |
| 71 | retq\r | |
| 72 | \r | |
| 73 | #------------------------------------------------------------------------------\r | |
| 74 | # VOID\r | |
| 75 | # EfiCpuid (\r | |
| 76 | # IN UINT32 RegisterInEax, // rcx\r | |
| 77 | # OUT EFI_CPUID_REGISTER *Reg OPTIONAL // rdx\r | |
| 78 | # )\r | |
| 79 | #------------------------------------------------------------------------------\r | |
| 80 | ASM_PFX(EfiCpuid):\r | |
| 81 | push %rbx\r | |
| 82 | mov %rdx,%r8\r | |
| 83 | mov %rcx,%rax\r | |
| 84 | cpuid\r | |
| 85 | cmp $0x0,%r8\r | |
| 86 | je _Exit\r | |
| 87 | mov %eax,(%r8)\r | |
| 88 | mov %ebx,0x4(%r8)\r | |
| 89 | mov %ecx,0x8(%r8)\r | |
| 90 | mov %edx,0xc(%r8)\r | |
| 91 | _Exit:\r | |
| 92 | pop %rbx\r | |
| 93 | retq\r | |
| 94 | \r | |
| 95 | #------------------------------------------------------------------------------\r | |
| 96 | # UINT64\r | |
| 97 | # EfiReadMsr (\r | |
| 98 | # IN UINT32 Index, // rcx\r | |
| 99 | # )\r | |
| 100 | #------------------------------------------------------------------------------\r | |
| 101 | ASM_PFX(EfiReadMsr):\r | |
| 102 | rdmsr\r | |
| 103 | shl $0x20,%rdx\r | |
| 104 | or %rdx,%rax\r | |
| 105 | retq\r | |
| 106 | \r | |
| 107 | #------------------------------------------------------------------------------\r | |
| 108 | # VOID\r | |
| 109 | # EfiWriteMsr (\r | |
| 110 | # IN UINT32 Index, // rcx\r | |
| 111 | # IN UINT64 Value // rdx\r | |
| 112 | # )\r | |
| 113 | #------------------------------------------------------------------------------\r | |
| 114 | ASM_PFX(EfiWriteMsr):\r | |
| 115 | mov %rdx,%rax\r | |
| 116 | sar $0x20,%rdx\r | |
| 117 | wrmsr\r | |
| 118 | retq\r | |
| 119 | \r | |
| 120 | #------------------------------------------------------------------------------\r | |
| 121 | # UINT64\r | |
| 122 | # EfiReadTsc (\r | |
| 123 | # VOID\r | |
| 124 | # );\r | |
| 125 | #------------------------------------------------------------------------------\r | |
| 126 | ASM_PFX(EfiReadTsc):\r | |
| 127 | rdtsc\r | |
| 128 | shl $0x20,%rax\r | |
| 129 | shrd $0x20,%rdx,%rax\r | |
| 130 | retq\r | |
| 131 | \r | |
| 132 | #------------------------------------------------------------------------------\r | |
| 133 | # VOID\r | |
| 134 | # EfiDisableCache (\r | |
| 135 | # VOID\r | |
| 136 | # );\r | |
| 137 | #------------------------------------------------------------------------------\r | |
| 138 | ASM_PFX(EfiDisableCache):\r | |
| 139 | # added a check to see if cache is already disabled. If it is, then skip.\r | |
| 140 | mov %cr0,%rax\r | |
| 141 | and $0x60000000,%rax\r | |
| 142 | cmp $0x0,%rax\r | |
| 143 | jne 1f\r | |
| 144 | mov %cr0,%rax\r | |
| 145 | or $0x60000000,%rax\r | |
| 146 | mov %rax,%cr0\r | |
| 147 | wbinvd\r | |
| 148 | 1:\r | |
| 149 | retq\r | |
| 150 | \r | |
| 151 | #------------------------------------------------------------------------------\r | |
| 152 | # VOID\r | |
| 153 | # EfiEnableCache (\r | |
| 154 | # VOID\r | |
| 155 | # );\r | |
| 156 | #------------------------------------------------------------------------------\r | |
| 157 | ASM_PFX(EfiEnableCache):\r | |
| 158 | wbinvd\r | |
| 159 | mov %cr0,%rax\r | |
| 160 | and $0xffffffff9fffffff,%rax\r | |
| 161 | mov %rax,%cr0\r | |
| 162 | retq\r | |
| 163 | \r | |
| 164 | #------------------------------------------------------------------------------\r | |
| 165 | # UINTN\r | |
| 166 | # EfiGetEflags (\r | |
| 167 | # VOID\r | |
| 168 | # );\r | |
| 169 | #------------------------------------------------------------------------------\r | |
| 170 | ASM_PFX(EfiGetEflags):\r | |
| 171 | pushfq\r | |
| 172 | pop %rax\r | |
| 173 | retq\r | |
| 174 | \r | |
| 175 | #------------------------------------------------------------------------------\r | |
| 176 | # VOID\r | |
| 177 | # EfiDisableInterrupts (\r | |
| 178 | # VOID\r | |
| 179 | # );\r | |
| 180 | #------------------------------------------------------------------------------\r | |
| 181 | ASM_PFX(EfiDisableInterrupts):\r | |
| 182 | cli\r | |
| 183 | ret\r | |
| 184 | \r | |
| 185 | #------------------------------------------------------------------------------\r | |
| 186 | # VOID\r | |
| 187 | # EfiEnableInterrupts (\r | |
| 188 | # VOID\r | |
| 189 | # );\r | |
| 190 | #------------------------------------------------------------------------------\r | |
| 191 | ASM_PFX(EfiEnableInterrupts):\r | |
| 192 | sti\r | |
| 193 | ret\r | |
| 194 | #------------------------------------------------------------------------------\r | |
| 195 | # VOID\r | |
| 196 | # EfiCpuidExt (\r | |
| 197 | # IN UINT32 RegisterInEax,\r | |
| 198 | # IN UINT32 CacheLevel,\r | |
| 199 | # OUT EFI_CPUID_REGISTER *Regs\r | |
| 200 | # )\r | |
| 201 | #------------------------------------------------------------------------------\r | |
| 202 | ASM_PFX(EfiCpuidExt):\r | |
| 203 | push %rbx\r | |
| 204 | mov %rcx,%rax\r | |
| 205 | mov %rdx,%rcx\r | |
| 206 | cpuid\r | |
| 207 | mov %eax,(%r8)\r | |
| 208 | mov %ebx,0x4(%r8)\r | |
| 209 | mov %ecx,0x8(%r8)\r | |
| 210 | mov %edx,0xc(%r8)\r | |
| 211 | pop %rbx\r | |
| 212 | retq\r |