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1. Optimization for WIMBOOT mode.

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2. Add WIMBOOT for UEFI mode.
This commit is contained in:
longpanda
2021-05-13 23:05:42 +08:00
parent ca62128f9b
commit 93996cf7e2
120 changed files with 24582 additions and 29 deletions
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79
wimboot/wimboot-2.7.3/src/paging.h Normal file
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#ifndef _PAGING_H
#define _PAGING_H
/*
* Copyright (C) 2021 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* @file
*
* Paging
*
*/
#include <stddef.h>
/** Get CPU features */
#define CPUID_FEATURES 0x00000001
/** CPU supports PAE */
#define CPUID_FEATURE_EDX_PAE 0x00000040
/* CR0: paging */
#define CR0_PG 0x80000000
/* CR4: physical address extensions */
#define CR4_PAE 0x00000020
/* Page: present */
#define PG_P 0x01
/* Page: read/write */
#define PG_RW 0x02
/* Page: user/supervisor */
#define PG_US 0x04
/* Page: page size */
#define PG_PS 0x80
/** 2MB page size */
#define PAGE_SIZE_2MB 0x200000
/** 32-bit address space size */
#define ADDR_4GB 0x100000000ULL
/** Saved paging state */
struct paging_state {
/** Control register 0 */
unsigned long cr0;
/** Control register 3 */
unsigned long cr3;
/** Control register 4 */
unsigned long cr4;
};
extern int paging;
extern void init_paging ( void );
extern void enable_paging ( struct paging_state *state );
extern void disable_paging ( struct paging_state *state );
extern uint64_t relocate_memory_high ( void *start, size_t len );
#endif /* _PAGING_H */