projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 9f4f2f0e | 1 | #------------------------------------------------------------------------------\r |
| 2 | #\r | |
| bb817c56 HT |
3 | # Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
| 4 | # This program and the accompanying materials\r | |
| 9f4f2f0e | 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 | # DisableCache.S\r | |
| 15 | #\r | |
| 16 | # Abstract:\r | |
| 17 | #\r | |
| 18 | # Set the CD bit of CR0 to 1, clear the NW bit of CR0 to 0, and flush all caches with a\r | |
| 19 | # WBINVD instruction.\r | |
| 20 | #\r | |
| 21 | # Notes:\r | |
| 22 | #\r | |
| 23 | #------------------------------------------------------------------------------\r | |
| 24 | \r | |
| 25 | #------------------------------------------------------------------------------\r | |
| 26 | # VOID\r | |
| 27 | # EFIAPI\r | |
| 28 | # AsmDisableCache (\r | |
| 29 | # VOID\r | |
| 30 | # );\r | |
| 31 | #------------------------------------------------------------------------------\r | |
| 132f41f0 | 32 | ASM_GLOBAL ASM_PFX(AsmDisableCache)\r |
| 9f4f2f0e | 33 | ASM_PFX(AsmDisableCache):\r |
| 34 | movl %cr0, %eax\r | |
| 35 | btsl $30, %eax\r | |
| 36 | btrl $29, %eax\r | |
| 37 | movl %eax, %cr0\r | |
| 38 | wbinvd\r | |
| 39 | ret\r |