xt-sys/exectos
xt-sys/exectos
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Map framebuffer and fill information about it into kernel parameters
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This commit is contained in:
Rafal Kupiec 2023-01-16 18:49:54 +01:00
parent 605597262c
commit b8df45ab6a
Signed by: belliash
GPG Key ID: 4E829243E0CFE6B4
1 changed files with 39 additions and 1 deletions
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40
xtldr/modules/xtos/xtos.c
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@ -270,11 +270,13 @@ EFI_STATUS
XtpInitializeLoaderBlock(IN PLIST_ENTRY MemoryMappings,
IN PVOID *VirtualAddress)
{
EFI_GUID FrameBufGuid = XT_FRAMEBUFFER_PROTOCOL_GUID;
PXT_FRAMEBUFFER_PROTOCOL FrameBufProtocol;
PKERNEL_INITIALIZATION_BLOCK LoaderBlock;
EFI_PHYSICAL_ADDRESS Address;
PVOID RuntimeServices;
EFI_STATUS Status;
UINT BlockPages;
UINT BlockPages, FrameBufferPages;
/* Calculate number of pages needed for initialization block */
BlockPages = EFI_SIZE_TO_PAGES(sizeof(KERNEL_INITIALIZATION_BLOCK));
@ -302,6 +304,24 @@ XtpInitializeLoaderBlock(IN PLIST_ENTRY MemoryMappings,
/* Set LoaderInformation block properties */
LoaderBlock->LoaderInformation.DbgPrint = XtLdrProtocol->DbgPrint;
/* Load FrameBuffer protocol */
Status = BlLoadXtProtocol((PVOID *)&FrameBufProtocol, &FrameBufGuid);
if(Status == STATUS_EFI_SUCCESS)
{
/* Make sure FrameBuffer is initialized */
FrameBufProtocol->Initialize();
FrameBufProtocol->PrintDisplayInformation();
/* Store information about FrameBuffer device */
FrameBufProtocol->GetDisplayInformation(&LoaderBlock->LoaderInformation.FrameBuffer);
}
else
{
/* No FrameBuffer available */
LoaderBlock->LoaderInformation.FrameBuffer.Initialized = FALSE;
LoaderBlock->LoaderInformation.FrameBuffer.Protocol = NONE;
}
/* Attempt to find virtual address of the EFI Runtime Services */
Status = XtLdrProtocol->GetVirtualAddress(MemoryMappings, &EfiSystemTable->RuntimeServices->Hdr, &RuntimeServices);
if(Status == STATUS_EFI_SUCCESS)
@ -324,6 +344,24 @@ XtpInitializeLoaderBlock(IN PLIST_ENTRY MemoryMappings,
/* Calculate next valid virtual address */
*VirtualAddress += (UINT_PTR)(BlockPages * EFI_PAGE_SIZE);
/* Check if framebuffer initialized */
if(LoaderBlock->LoaderInformation.FrameBuffer.Initialized)
{
/* Calculate pages needed to map framebuffer */
FrameBufferPages = EFI_SIZE_TO_PAGES(LoaderBlock->LoaderInformation.FrameBuffer.BufferSize);
/* Map frame buffer memory */
XtLdrProtocol->AddVirtualMemoryMapping(MemoryMappings, *VirtualAddress,
LoaderBlock->LoaderInformation.FrameBuffer.Address,
FrameBufferPages, LoaderFirmwarePermanent);
/* Rewrite framebuffer address by using virtual address */
LoaderBlock->LoaderInformation.FrameBuffer.Address = *VirtualAddress;
/* Calcualate next valid virtual address */
*VirtualAddress += (UINT_PTR)(FrameBufferPages * EFI_PAGE_SIZE);
}
/* Return success */
return STATUS_EFI_SUCCESS;
}