diff options
| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-04-18 05:08:50 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-04-18 05:08:50 +0000 |
| commit | dca18202a1c3ef54bc06cce2199e88fb74676cf6 (patch) | |
| tree | 8cb4757120b1de1e62a4db2cb7193e0b33881792 /SourceLevelDebugPkg/Library | |
| parent | 8908e764fe81677bd87a9cbad9dba6e16a15a450 (diff) | |
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
Diffstat (limited to 'SourceLevelDebugPkg/Library')
| -rw-r--r-- | SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c b/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c index 49c8268e0..828407304 100644 --- a/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c +++ b/SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.c @@ -244,23 +244,51 @@ 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
//
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 ();
- SetDebugFlag (DEBUG_AGENT_FLAG_MEMORY_READY, 1);
-
+ CopyMem (NewMailbox, Mailbox, sizeof (DEBUG_AGENT_MAILBOX));
+ CopyMem (NewMailbox + 1, (VOID *)(UINTN)Mailbox->DebugPortHandle, PcdGet16(PcdDebugPortHandleBufferSize));
//
- // Memory has been ready
+ // 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);
+
if (IsHostAttached ()) {
//
// Trigger one software interrupt to inform HOST
|