[qemu.git] / hw / pam.h

#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 */
Commit	Line	Data
410edd92 IY	1	#ifndef QEMU_PAM_H
	2	#define QEMU_PAM_H
	3
	4	/*
	5	* Copyright (c) 2006 Fabrice Bellard
	6	* Copyright (c) 2011 Isaku Yamahata <yamahata at valinux co jp>
	7	* VA Linux Systems Japan K.K.
	8	* Copyright (c) 2012 Jason Baron <jbaron@redhat.com>
	9	*
	10	* Split out from piix_pci.c
	11	*
	12	* Permission is hereby granted, free of charge, to any person obtaining a copy
	13	* of this software and associated documentation files (the "Software"), to deal
	14	* in the Software without restriction, including without limitation the rights
	15	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	16	* copies of the Software, and to permit persons to whom the Software is
	17	* furnished to do so, subject to the following conditions:
	18	*
	19	* The above copyright notice and this permission notice shall be included in
	20	* all copies or substantial portions of the Software.
	21	*
	22	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	23	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	25	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	26	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	27	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	28	* THE SOFTWARE.
	29	*/
	30
	31	/*
	32	* SMRAM memory area and PAM memory area in Legacy address range for PC.
	33	* PAM: Programmable Attribute Map registers
	34	*
	35	* 0xa0000 - 0xbffff compatible SMRAM
	36	*
	37	* 0xc0000 - 0xc3fff Expansion area memory segments
	38	* 0xc4000 - 0xc7fff
	39	* 0xc8000 - 0xcbfff
	40	* 0xcc000 - 0xcffff
	41	* 0xd0000 - 0xd3fff
	42	* 0xd4000 - 0xd7fff
	43	* 0xd8000 - 0xdbfff
	44	* 0xdc000 - 0xdffff
	45	* 0xe0000 - 0xe3fff Extended System BIOS Area Memory Segments
	46	* 0xe4000 - 0xe7fff
	47	* 0xe8000 - 0xebfff
	48	* 0xec000 - 0xeffff
	49	*
	50	* 0xf0000 - 0xfffff System BIOS Area Memory Segments
	51	*/
	52
	53	#include "qemu-common.h"
022c62cb	54	#include "exec/memory.h"
410edd92 IY	55
	56	#define SMRAM_C_BASE 0xa0000
	57	#define SMRAM_C_END 0xc0000
	58	#define SMRAM_C_SIZE 0x20000
	59
	60	#define PAM_EXPAN_BASE 0xc0000
	61	#define PAM_EXPAN_SIZE 0x04000
	62
	63	#define PAM_EXBIOS_BASE 0xe0000
	64	#define PAM_EXBIOS_SIZE 0x04000
	65
	66	#define PAM_BIOS_BASE 0xf0000
	67	#define PAM_BIOS_END 0xfffff
	68	/* 64KB: Intel 3 series express chipset family p. 58*/
	69	#define PAM_BIOS_SIZE 0x10000
	70
	71	/* PAM registers: log nibble and high nibble*/
	72	#define PAM_ATTR_WE ((uint8_t)2)
	73	#define PAM_ATTR_RE ((uint8_t)1)
	74	#define PAM_ATTR_MASK ((uint8_t)3)
	75
	76	/* SMRAM register */
	77	#define SMRAM_D_OPEN ((uint8_t)(1 << 6))
	78	#define SMRAM_D_CLS ((uint8_t)(1 << 5))
	79	#define SMRAM_D_LCK ((uint8_t)(1 << 4))
	80	#define SMRAM_G_SMRAME ((uint8_t)(1 << 3))
	81	#define SMRAM_C_BASE_SEG_MASK ((uint8_t)0x7)
	82	#define SMRAM_C_BASE_SEG ((uint8_t)0x2) /* hardwired to b010 */
	83
	84	typedef struct PAMMemoryRegion {
	85	MemoryRegion alias[4]; /* index = PAM value */
	86	unsigned current;
	87	} PAMMemoryRegion;
	88
	89	void smram_update(MemoryRegion *smram_region, uint8_t smram,
	90	uint8_t smm_enabled);
	91	void smram_set_smm(uint8_t *host_smm_enabled, int smm, uint8_t smram,
	92	MemoryRegion *smram_region);
	93	void init_pam(MemoryRegion ram, MemoryRegion system, MemoryRegion *pci,
	94	PAMMemoryRegion *mem, uint32_t start, uint32_t size);
	95	void pam_update(PAMMemoryRegion *mem, int idx, uint8_t val);
	96
	97	#endif /* QEMU_PAM_H */