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Aiden Park
9193a72864
This will allow OsLoader payload to boot to 64-bit kernel entry point. If CPU supports 64-bit mode and a kernel image has 64-bit entry point, OsLoader will switch to 64-bit long mode and jump to the 64-bit entry point. Otherwise, continue to boot to 32-bit entry point. - Ported necessary code from EDK2 VitualMemory.c in MdeModulePkg - Moved PagingLib from BootloaderCorePkg to BootloaderCommonPkg - Removed unused FlushCacheLine - TBD: 64-bit IDT Next step is to support 64-bit Payload. - 32-bit compatible mode - 64-bit CryptoLib - etc. Signed-off-by: Aiden Park <aiden.park@intel.com>
39 lines
1.1 KiB
NASM
39 lines
1.1 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>
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;
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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;------------------------------------------------------------------------------
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SECTION .text
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; JumpToKernel (
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; VOID *KernelStart,
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; VOID *KernelBootParams
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(JumpToKernel)
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ASM_PFX(JumpToKernel):
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mov esi, [esp + 8]
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call DWORD [esp + 4]
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ret
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; JumpToKernel64 (
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; VOID *KernelStart,
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; VOID *KernelBootParams
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(JumpToKernel64)
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ASM_PFX(JumpToKernel64):
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DB 0x67, 0x48 ; 32-bit address size, 64-bit operand size
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mov esi, edx ; mov esi, rdx
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call ecx
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hlt
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