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Commit | Line | Data |
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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 | |
2fc59a00 | 7 | # http://opensource.org/licenses/bsd-license.php.\r |
9f4f2f0e | 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 | # EnableCache.S\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
18 | # Flush all caches with a WBINVD instruction, clear the CD bit of CR0 to 0, and clear \r | |
19 | # the NW bit of CR0 to 0\r | |
20 | #\r | |
21 | # Notes:\r | |
22 | #\r | |
23 | #------------------------------------------------------------------------------\r | |
24 | \r | |
25 | #------------------------------------------------------------------------------\r | |
26 | # VOID\r | |
27 | # EFIAPI\r | |
28 | # AsmEnableCache (\r | |
29 | # VOID\r | |
30 | # );\r | |
31 | #------------------------------------------------------------------------------\r | |
132f41f0 | 32 | ASM_GLOBAL ASM_PFX(AsmEnableCache)\r |
9f4f2f0e | 33 | ASM_PFX(AsmEnableCache):\r |
34 | wbinvd\r | |
04fdba54 | 35 | movq %cr0, %rax\r |
36 | btrq $30, %rax\r | |
37 | btrq $29, %rax\r | |
38 | movq %rax, %cr0\r | |
9f4f2f0e | 39 | ret\r |