From: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
To: <edk2-devel@lists.01.org>, <leif.lindholm@linaro.org>,
<ard.biesheuvel@linaro.org>
Subject: [PATCH] RFC Inform UEFI memory to Linux
Date: Fri, 15 Sep 2017 20:02:34 +0530 [thread overview]
Message-ID: <1505485954-24345-1-git-send-email-meenakshi.aggarwal@nxp.com> (raw)
From: Udit Kumar <udit.kumar@nxp.com>
While creating Hob list, ArmPlatformPkg is hiding UEFI memory.
whereas this memory can be used by OS.
This patch, allows OS to use UEFI code area.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com>
Signed-off-by: Udit Kumar <udit.kumar@nxp.com>
---
ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c | 28 ++++++++++++-------------
1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c b/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c
index 2feb11f..ae6ebc4 100644
--- a/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c
+++ b/ArmPlatformPkg/MemoryInitPei/MemoryInitPeiLib.c
@@ -147,24 +147,24 @@ MemoryPeim (
if (PcdGet64 (PcdFdBaseAddress) == NextHob.ResourceDescriptor->PhysicalStart) {
if (SystemMemoryTop == FdTop) {
NextHob.ResourceDescriptor->ResourceAttribute = ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT;
- } else {
- // Create the System Memory HOB for the firmware with the non-present attribute
- BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
- ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,
- PcdGet64 (PcdFdBaseAddress),
- PcdGet32 (PcdFdSize));
-
+ } else {
+ // Create the System Memory HOB for the firmware with the non-present attribute
+ BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
+ ResourceAttributes,
+ PcdGet64 (PcdFdBaseAddress),
+ PcdGet32 (PcdFdSize));
+
// Top of the FD is system memory available for UEFI
NextHob.ResourceDescriptor->PhysicalStart += PcdGet32(PcdFdSize);
NextHob.ResourceDescriptor->ResourceLength -= PcdGet32(PcdFdSize);
}
- } else {
- // Create the System Memory HOB for the firmware with the non-present attribute
- BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
- ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,
- PcdGet64 (PcdFdBaseAddress),
- PcdGet32 (PcdFdSize));
-
+ } else {
+ // Create the System Memory HOB for the firmware with the non-present attribute
+ BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
+ ResourceAttributes,
+ PcdGet64 (PcdFdBaseAddress),
+ PcdGet32 (PcdFdSize));
+
// Update the HOB
NextHob.ResourceDescriptor->ResourceLength = PcdGet64 (PcdFdBaseAddress) - NextHob.ResourceDescriptor->PhysicalStart;
--
1.9.1
next reply other threads:[~2017-09-15 8:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-15 14:32 Meenakshi Aggarwal [this message]
2017-09-15 10:13 ` [PATCH] RFC Inform UEFI memory to Linux Leif Lindholm
2017-09-15 22:55 ` Ard Biesheuvel
2017-09-18 4:07 ` Udit Kumar
2017-09-18 4:30 ` Ard Biesheuvel
2017-09-19 12:32 ` [PATCH v2] PeiLib : " Meenakshi Aggarwal
2017-09-19 8:07 ` Sakar Arora
2017-09-19 10:10 ` Udit Kumar
2017-09-19 11:20 ` Sakar Arora
2017-09-19 12:46 ` Udit Kumar
2017-09-19 12:48 ` Ard Biesheuvel
2017-09-20 5:32 ` Sakar Arora
2017-09-20 6:32 ` Ard Biesheuvel
2017-09-20 8:20 ` Sakar Arora
2017-09-25 5:47 ` Meenakshi Aggarwal
2017-11-30 10:07 ` Udit Kumar
2017-11-30 14:33 ` Ard Biesheuvel
2017-09-20 14:59 ` Gao, Liming
2017-09-21 5:59 ` Udit Kumar
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