| From ef89b11ce6f93c96fbd1753a8006dd9c3da212e0 Mon Sep 17 00:00:00 2001 |
| From: ReddestDream <reddestdream@gmail.com> |
| Date: Wed, 3 May 2017 00:13:28 -0400 |
| Subject: [PATCH] CbSupportPei: prevent lower coreboot table from being |
| overwritten |
| |
| Exclude the bottom 4kb from being included in System Memory HoB |
| |
| diff --git a/CorebootModulePkg/CbSupportPei/CbSupportPei.c b/CorebootModulePkg/CbSupportPei/CbSupportPei.c |
| index 262e6b9..d3c5723 100755 |
| --- a/CorebootModulePkg/CbSupportPei/CbSupportPei.c |
| +++ b/CorebootModulePkg/CbSupportPei/CbSupportPei.c |
| @@ -261,8 +261,9 @@ CbPeiEntryPoint ( |
| EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE | |
| EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
| ), |
| - (EFI_PHYSICAL_ADDRESS)(0), |
| - (UINT64)(0xA0000) |
| + // Lower 640KB, except for first 4KB where the lower coreboot pointer ("LBIO") resides |
| + (EFI_PHYSICAL_ADDRESS)(0 + 0x1000), |
| + (UINT64)(0xA0000 - 0x1000) |
| ); |
| |
| |
| -- |
| 2.14.0 |