Archipelago » qemu

#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 "exec/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 */