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https://github.com/deadw00d/AROS.git
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1ebb5df920
This flag indicates that something has already gone wrong and least amount of code should be used to do reboot or shutdown. This means not running non-critical reset handlers. Note that the handler itself needs to decide whethere it is critical or not.
103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/*
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Copyright (C) 1995-2014, The AROS Development Team. All rights reserved.
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*/
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#include <aros/debug.h>
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#include <resources/efi.h>
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#include <proto/arossupport.h>
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#include <proto/kernel.h>
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#include "efi_intern.h"
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static BOOL CheckTable(struct EFI_TableHeader *t, UQUAD sig)
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{
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if (t->Signature != sig)
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{
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D(bug("[EFI] Table 0x%p bad signature (has 0x%016llX, wanted 0x%016llX)\n", t, t->Signature, sig));
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return FALSE;
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}
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/* TODO: Check CRC */
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return TRUE;
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}
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AROS_INTH1(static ResetHandler, struct EFIBase *, EFIBase)
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{
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AROS_INTFUNC_INIT
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UBYTE action = EFIBase->reset_handler.is_Node.ln_Type & SD_ACTION_MASK;
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IPTR efiAction;
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switch (action)
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{
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case SD_ACTION_COLDREBOOT:
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efiAction = EFI_Reset_Cold;
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break;
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case SD_ACTION_POWEROFF:
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efiAction = EFI_Reset_Shutdown;
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break;
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default:
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/* Unknown action */
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return FALSE;
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}
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/* Use EFI runtime services to perform the action */
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EFIBase->Runtime->ResetSystem(efiAction, 0, 0, NULL);
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/* Shut up the compiler, we should never reach this. */
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return FALSE;
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AROS_INTFUNC_EXIT
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}
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static int efi_Init(struct EFIBase *EFIBase)
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{
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APTR KernelBase;
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struct TagItem *tag;
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D(bug("[EFI] Entered efi_Init() at 0x%p\n", efi_Init));
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KernelBase = OpenResource("kernel.resource");
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if (!KernelBase)
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{
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return FALSE;
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}
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tag = LibFindTagItem(KRN_EFISystemTable, KrnGetBootInfo());
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if (!tag)
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{
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D(bug("[EFI] No EFI system table from the bootstrap!\n"));
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return FALSE;
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}
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EFIBase->System = (struct EFI_SystemTable *)tag->ti_Data;
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D(bug("Found EFI system table at 0x%p\n", EFIBase->System));
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if (!CheckTable(&EFIBase->System->Hdr, EFI_SYSTEM_TABLE_SIGNATURE))
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{
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D(bug("[EFI] System table broken\n"));
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return FALSE;
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}
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if (CheckTable(&EFIBase->System->RuntimeServices->Hdr, EFI_RUNTIME_SERVICES_SIGNATURE))
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{
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EFIBase->Runtime = EFIBase->System->RuntimeServices;
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D(bug("[EFI] Valid runtime services table at 0x%p\n", EFIBase->Runtime));
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/* Install EFI reset/power-off mechanism */
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EFIBase->reset_handler.is_Node.ln_Pri = -56;
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EFIBase->reset_handler.is_Node.ln_Name = "EFI reset";
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EFIBase->reset_handler.is_Code = (VOID_FUNC)ResetHandler;
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EFIBase->reset_handler.is_Data = EFIBase;
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AddResetCallback(&EFIBase->reset_handler);
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}
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return TRUE;
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}
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ADD2INITLIB(efi_Init, 0);
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