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#ifndef QEMU_PAM_H
#define QEMU_PAM_H
/*
* Copyright (c) 2006 Fabrice Bellard
* Copyright (c) 2011 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
* Copyright (c) 2012 Jason Baron <jbaron@redhat.com>
*
* Split out from piix_pci.c
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/*
* SMRAM memory area and PAM memory area in Legacy address range for PC.
* PAM: Programmable Attribute Map registers
*
* 0xa0000 - 0xbffff compatible SMRAM
*
* 0xc0000 - 0xc3fff Expansion area memory segments
* 0xc4000 - 0xc7fff
* 0xc8000 - 0xcbfff
* 0xcc000 - 0xcffff
* 0xd0000 - 0xd3fff
* 0xd4000 - 0xd7fff
* 0xd8000 - 0xdbfff
* 0xdc000 - 0xdffff
* 0xe0000 - 0xe3fff Extended System BIOS Area Memory Segments
* 0xe4000 - 0xe7fff
* 0xe8000 - 0xebfff
* 0xec000 - 0xeffff
*
* 0xf0000 - 0xfffff System BIOS Area Memory Segments
*/
#include "qemu-common.h"
#include "memory.h"
#define SMRAM_C_BASE 0xa0000
#define SMRAM_C_END 0xc0000
#define SMRAM_C_SIZE 0x20000
#define PAM_EXPAN_BASE 0xc0000
#define PAM_EXPAN_SIZE 0x04000
#define PAM_EXBIOS_BASE 0xe0000
#define PAM_EXBIOS_SIZE 0x04000
#define PAM_BIOS_BASE 0xf0000
#define PAM_BIOS_END 0xfffff
/* 64KB: Intel 3 series express chipset family p. 58*/
#define PAM_BIOS_SIZE 0x10000
/* PAM registers: log nibble and high nibble*/
#define PAM_ATTR_WE ((uint8_t)2)
#define PAM_ATTR_RE ((uint8_t)1)
#define PAM_ATTR_MASK ((uint8_t)3)
/* SMRAM register */
#define SMRAM_D_OPEN ((uint8_t)(1 << 6))
#define SMRAM_D_CLS ((uint8_t)(1 << 5))
#define SMRAM_D_LCK ((uint8_t)(1 << 4))
#define SMRAM_G_SMRAME ((uint8_t)(1 << 3))
#define SMRAM_C_BASE_SEG_MASK ((uint8_t)0x7)
#define SMRAM_C_BASE_SEG ((uint8_t)0x2) /* hardwired to b010 */
typedef struct PAMMemoryRegion {
MemoryRegion alias[4]; /* index = PAM value */
unsigned current;
} PAMMemoryRegion;
void smram_update(MemoryRegion *smram_region, uint8_t smram,
uint8_t smm_enabled);
void smram_set_smm(uint8_t *host_smm_enabled, int smm, uint8_t smram,
MemoryRegion *smram_region);
void init_pam(MemoryRegion *ram, MemoryRegion *system, MemoryRegion *pci,
PAMMemoryRegion *mem, uint32_t start, uint32_t size);
void pam_update(PAMMemoryRegion *mem, int idx, uint8_t val);
#endif /* QEMU_PAM_H */
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