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ArmPkg/BdsLib: Passed reserved memory regions to the Device Tree 

Go through the UEFI memory map and add OS 'runtime' regions as
reserved regions to the Device Tree.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14183 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin 2013-03-12 00:54:58 +00:00
parent a9d7090fc2
commit a01e042dfa
1 changed files with 80 additions and 0 deletions
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80
ArmPkg/Library/BdsLib/BdsLinuxFdt.c
View File

@ -104,6 +104,23 @@ DebugDumpFdt (
UINTN shift;
UINT32 version;
{
// Can 'memreserve' be printed by below code?
INTN num = fdt_num_mem_rsv(FdtBlob);
INTN i, err;
UINT64 addr = 0,size = 0;
for (i = 0; i < num; i++) {
err = fdt_get_mem_rsv(FdtBlob, i, &addr, &size);
if (err) {
DEBUG((EFI_D_ERROR, "Error (%d) : Cannot get memreserve section (%d)\n", err, i));
}
else {
Print(L"/memreserve/ \t0x%lx \t0x%lx;\n",addr,size);
}
}
}
depth = 0;
shift = 4;
@ -159,6 +176,25 @@ DebugDumpFdt (
}
}
STATIC
BOOLEAN
IsLinuxReservedRegion (
IN EFI_MEMORY_TYPE MemoryType
)
{
switch(MemoryType) {
case EfiRuntimeServicesCode:
case EfiRuntimeServicesData:
case EfiUnusableMemory:
case EfiACPIReclaimMemory:
case EfiACPIMemoryNVS:
return TRUE;
default:
return FALSE;
}
}
typedef struct {
UINTN Base;
UINTN Size;
@ -195,6 +231,12 @@ PrepareFdt (
UINT32 ClusterId;
UINT32 CoreId;
UINT64 CpuReleaseAddr;
UINTN MemoryMapSize;
EFI_MEMORY_DESCRIPTOR *MemoryMap;
UINTN MapKey;
UINTN DescriptorSize;
UINT32 DescriptorVersion;
UINTN Pages;
err = fdt_check_header ((VOID*)(UINTN)(*FdtBlobBase));
if (err != 0) {
@ -259,7 +301,9 @@ PrepareFdt (
}
DEBUG_CODE_END();
//
// Set Linux CmdLine
//
if ((CommandLineArguments != NULL) && (AsciiStrLen (CommandLineArguments) > 0)) {
err = fdt_setprop(fdt, node, "bootargs", CommandLineArguments, AsciiStrSize(CommandLineArguments));
if (err) {
@ -267,7 +311,9 @@ PrepareFdt (
}
}
//
// Set Linux Initrd
//
if (InitrdImageSize != 0) {
InitrdImageStart = cpu_to_fdt64 (InitrdImage);
err = fdt_setprop(fdt, node, "linux,initrd-start", &InitrdImageStart, sizeof(EFI_PHYSICAL_ADDRESS));
@ -281,7 +327,9 @@ PrepareFdt (
}
}
//
// Set Physical memory setup if does not exist
//
node = fdt_subnode_offset(fdt, 0, "memory");
if (node < 0) {
// The 'memory' node does not exist, create it
@ -308,7 +356,39 @@ PrepareFdt (
}
}
//
// Add the memory regions reserved by the UEFI Firmware
//
// Retrieve the UEFI Memory Map
MemoryMap = NULL;
MemoryMapSize = 0;
Status = gBS->GetMemoryMap (&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);
if (Status == EFI_BUFFER_TOO_SMALL) {
Pages = EFI_SIZE_TO_PAGES (MemoryMapSize) + 1;
MemoryMap = AllocatePages (Pages);
Status = gBS->GetMemoryMap (&MemoryMapSize, MemoryMap, &MapKey, &DescriptorSize, &DescriptorVersion);
}
// Go through the list and add the reserved region to the Device Tree
if (!EFI_ERROR(Status)) {
for (Index = 0; Index < (MemoryMapSize / sizeof(EFI_MEMORY_DESCRIPTOR)); Index++) {
if (IsLinuxReservedRegion ((EFI_MEMORY_TYPE)MemoryMap[Index].Type)) {
DEBUG((DEBUG_VERBOSE, "Reserved region of type %d [0x%X, 0x%X]\n",
MemoryMap[Index].Type,
(UINTN)MemoryMap[Index].PhysicalStart,
(UINTN)(MemoryMap[Index].PhysicalStart + MemoryMap[Index].NumberOfPages * EFI_PAGE_SIZE)));
err = fdt_add_mem_rsv(fdt, MemoryMap[Index].PhysicalStart, MemoryMap[Index].NumberOfPages * EFI_PAGE_SIZE);
if (err != 0) {
Print(L"Warning: Fail to add 'memreserve' (err:%d)\n", err);
}
}
}
}
//
// Setup Arm Mpcore Info if it is a multi-core or multi-cluster platforms
//
for (Index=0; Index < gST->NumberOfTableEntries; Index++) {
// Check for correct GUID type
if (CompareGuid (&gArmMpCoreInfoGuid, &(gST->ConfigurationTable[Index].VendorGuid))) {