tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Allocate ACPImemoryNVS type memory to save mailbox and debug port handle buffer since original allocated pool memory may be marked as free by DXE Core. 

Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14285 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff 2013-04-18 05:08:50 +00:00
parent 8908e764fe
commit dca18202a1
1 changed files with 34 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c
View File

@ -244,8 +244,12 @@ DebugAgentCallbackMemoryDiscoveredPpi (
IN VOID *Ppi
)
{
EFI_STATUS Status;
DEBUG_AGENT_MAILBOX *Mailbox;
BOOLEAN InterruptStatus;
EFI_PHYSICAL_ADDRESS Memory;
DEBUG_AGENT_MAILBOX *NewMailbox;
UINT64 *MailboxLocationInHob;
//
// Save and disable original interrupt status
@ -253,14 +257,38 @@ DebugAgentCallbackMemoryDiscoveredPpi (
InterruptStatus = SaveAndDisableInterrupts ();
//
// Set physical memory ready flag
// Allocate ACPI NVS memory for new Mailbox and Debug Port Handle buffer
//
Status = PeiServicesAllocatePages (
EfiACPIMemoryNVS,
EFI_SIZE_TO_PAGES (sizeof(DEBUG_AGENT_MAILBOX) + PcdGet16(PcdDebugPortHandleBufferSize)),
&Memory
);
ASSERT_EFI_ERROR (Status);
NewMailbox = (DEBUG_AGENT_MAILBOX *) (UINTN) Memory;
//
// Copy Mailbox and Debug Port Handle buffer to new location in ACPI NVS memory, because original Mailbox
// and Debug Port Handle buffer in the allocated pool that may be marked as free by DXE Core after DXE Core
// reallocates the HOB.
//
Mailbox = GetMailboxPointer ();
CopyMem (NewMailbox, Mailbox, sizeof (DEBUG_AGENT_MAILBOX));
CopyMem (NewMailbox + 1, (VOID *)(UINTN)Mailbox->DebugPortHandle, PcdGet16(PcdDebugPortHandleBufferSize));
//
// Update Mailbox Location pointer in GUIDed HOB and IDT entry with new one
//
MailboxLocationInHob = GetMailboxLocationFromHob ();
*MailboxLocationInHob = (UINT64)(UINTN)NewMailbox;
SetLocationSavedMailboxPointerInIdtEntry (MailboxLocationInHob);
//
// Update Debug Port Handle in new Mailbox
//
UpdateMailboxContent (NewMailbox, DEBUG_MAILBOX_DEBUG_PORT_HANDLE_INDEX, (UINT64)(UINTN)(NewMailbox + 1));
//
// Set physical memory ready flag
//
SetDebugFlag (DEBUG_AGENT_FLAG_MEMORY_READY, 1);
//
// Memory has been ready
//
if (IsHostAttached ()) {
//
// Trigger one software interrupt to inform HOST