19b98b1145
configuration, loading images). Cleaned up "romimage" option parsing and prepared parameter "options" for the behaviour of the Bochs BIOS. TODO: implement BIOS option "fastboot" to skip the boot menu prompt.
204 lines
6.9 KiB
C++
204 lines
6.9 KiB
C++
/////////////////////////////////////////////////////////////////////////
|
|
// $Id$
|
|
/////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (C) 2001-2017 The Bochs Project
|
|
//
|
|
// I/O memory handlers API Copyright (C) 2003 by Frank Cornelis
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library 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
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
//
|
|
/////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef BX_MEM_H
|
|
# define BX_MEM_H 1
|
|
|
|
#if BX_USE_MEM_SMF
|
|
// if static member functions on, then there is only one memory
|
|
# define BX_MEM_SMF static
|
|
# define BX_MEM_THIS BX_MEM(0)->
|
|
#else
|
|
# define BX_MEM_SMF
|
|
# define BX_MEM_THIS this->
|
|
#endif
|
|
|
|
class BX_CPU_C;
|
|
|
|
// 512K BIOS ROM @0xfff80000
|
|
#define BIOSROMSZ ((Bit32u)(1 << 21)) // 2M BIOS ROM @0xffe00000, must be a power of 2
|
|
#define EXROMSIZE (0x20000) // ROMs 0xc0000-0xdffff (area 0xe0000-0xfffff=bios mapped)
|
|
#define BIOS_MASK (BIOSROMSZ-1)
|
|
#define EXROM_MASK (EXROMSIZE-1)
|
|
|
|
#define BIOS_MAP_LAST128K(addr) (((addr) | 0xfff00000) & BIOS_MASK)
|
|
|
|
enum memory_area_t {
|
|
BX_MEM_AREA_C0000 = 0,
|
|
BX_MEM_AREA_C4000,
|
|
BX_MEM_AREA_C8000,
|
|
BX_MEM_AREA_CC000,
|
|
BX_MEM_AREA_D0000,
|
|
BX_MEM_AREA_D4000,
|
|
BX_MEM_AREA_D8000,
|
|
BX_MEM_AREA_DC000,
|
|
BX_MEM_AREA_E0000,
|
|
BX_MEM_AREA_E4000,
|
|
BX_MEM_AREA_E8000,
|
|
BX_MEM_AREA_EC000,
|
|
BX_MEM_AREA_F0000
|
|
};
|
|
|
|
typedef bx_bool (*memory_handler_t)(bx_phy_address addr, unsigned len, void *data, void *param);
|
|
// return a pointer to 4K region containing <addr> or NULL if direct access is not allowed
|
|
// same format as getHostMemAddr method
|
|
typedef Bit8u* (*memory_direct_access_handler_t)(bx_phy_address addr, unsigned rw, void *param);
|
|
|
|
struct memory_handler_struct {
|
|
struct memory_handler_struct *next;
|
|
void *param;
|
|
bx_phy_address begin;
|
|
bx_phy_address end;
|
|
Bit16u bitmap;
|
|
memory_handler_t read_handler;
|
|
memory_handler_t write_handler;
|
|
memory_direct_access_handler_t da_handler;
|
|
};
|
|
|
|
#define SMRAM_CODE 1
|
|
#define SMRAM_DATA 2
|
|
|
|
class BOCHSAPI BX_MEM_C : public logfunctions {
|
|
private:
|
|
struct memory_handler_struct **memory_handlers;
|
|
bx_bool pci_enabled;
|
|
bx_bool bios_write_enabled;
|
|
bx_bool smram_available;
|
|
bx_bool smram_enable;
|
|
bx_bool smram_restricted;
|
|
|
|
Bit64u len, allocated; // could be > 4G
|
|
Bit8u *actual_vector;
|
|
Bit8u *vector; // aligned correctly
|
|
Bit8u **blocks;
|
|
Bit8u *rom; // 512k BIOS rom space + 128k expansion rom space
|
|
Bit8u *bogus; // 4k for unexisting memory
|
|
bx_bool rom_present[65];
|
|
bx_bool memory_type[13][2];
|
|
|
|
Bit32u used_blocks;
|
|
#if BX_LARGE_RAMFILE
|
|
static Bit8u * const swapped_out; // NULL; // (NULL - sizeof(Bit8u));
|
|
Bit32u next_swapout_idx;
|
|
FILE *overflow_file;
|
|
|
|
BX_MEM_SMF void read_block(Bit32u block);
|
|
#endif
|
|
|
|
public:
|
|
BX_MEM_C();
|
|
~BX_MEM_C();
|
|
|
|
BX_MEM_SMF Bit8u* get_vector(bx_phy_address addr);
|
|
BX_MEM_SMF void init_memory(Bit64u guest, Bit64u host);
|
|
BX_MEM_SMF void cleanup_memory(void);
|
|
|
|
BX_MEM_SMF void enable_smram(bx_bool enable, bx_bool restricted);
|
|
BX_MEM_SMF void disable_smram(void);
|
|
BX_MEM_SMF bx_bool is_smram_accessible(void);
|
|
|
|
BX_MEM_SMF void set_bios_write(bx_bool enabled);
|
|
BX_MEM_SMF void set_memory_type(memory_area_t area, bx_bool rw, bx_bool dram);
|
|
|
|
BX_MEM_SMF Bit8u* getHostMemAddr(BX_CPU_C *cpu, bx_phy_address addr, unsigned rw);
|
|
|
|
// Note: accesses should always be contained within a single page
|
|
BX_MEM_SMF void readPhysicalPage(BX_CPU_C *cpu, bx_phy_address addr,
|
|
unsigned len, void *data);
|
|
BX_MEM_SMF void writePhysicalPage(BX_CPU_C *cpu, bx_phy_address addr,
|
|
unsigned len, void *data);
|
|
|
|
BX_MEM_SMF void dmaReadPhysicalPage(bx_phy_address addr, unsigned len, Bit8u *data);
|
|
BX_MEM_SMF void dmaWritePhysicalPage(bx_phy_address addr, unsigned len, Bit8u *data);
|
|
|
|
BX_MEM_SMF void load_ROM(const char *path, bx_phy_address romaddress, Bit8u type);
|
|
BX_MEM_SMF void load_RAM(const char *path, bx_phy_address romaddress);
|
|
|
|
#if (BX_DEBUGGER || BX_DISASM || BX_GDBSTUB)
|
|
BX_MEM_SMF bx_bool dbg_fetch_mem(BX_CPU_C *cpu, bx_phy_address addr, unsigned len, Bit8u *buf);
|
|
#endif
|
|
#if (BX_DEBUGGER || BX_GDBSTUB)
|
|
BX_MEM_SMF bx_bool dbg_set_mem(bx_phy_address addr, unsigned len, Bit8u *buf);
|
|
BX_MEM_SMF bx_bool dbg_crc32(bx_phy_address addr1, bx_phy_address addr2, Bit32u *crc);
|
|
#endif
|
|
|
|
BX_MEM_SMF bx_bool registerMemoryHandlers(void *param, memory_handler_t read_handler,
|
|
memory_handler_t write_handler, memory_direct_access_handler_t da_handler,
|
|
bx_phy_address begin_addr, bx_phy_address end_addr);
|
|
BX_MEM_SMF BX_CPP_INLINE bx_bool registerMemoryHandlers(void *param, memory_handler_t read_handler,
|
|
memory_handler_t write_handler,
|
|
bx_phy_address begin_addr, bx_phy_address end_addr)
|
|
{
|
|
return registerMemoryHandlers(param, read_handler, write_handler, NULL, begin_addr, end_addr);
|
|
}
|
|
BX_MEM_SMF bx_bool unregisterMemoryHandlers(void *param, bx_phy_address begin_addr, bx_phy_address end_addr);
|
|
|
|
BX_MEM_SMF Bit64u get_memory_len(void);
|
|
BX_MEM_SMF void allocate_block(Bit32u index);
|
|
BX_MEM_SMF Bit8u* alloc_vector_aligned(Bit32u bytes, Bit32u alignment);
|
|
|
|
#if BX_SUPPORT_MONITOR_MWAIT
|
|
BX_MEM_SMF bx_bool is_monitor(bx_phy_address begin_addr, unsigned len);
|
|
BX_MEM_SMF void check_monitor(bx_phy_address addr, unsigned len);
|
|
#endif
|
|
|
|
void register_state(void);
|
|
|
|
friend void ramfile_save_handler(void *devptr, FILE *fp);
|
|
friend Bit64s memory_param_save_handler(void *devptr, bx_param_c *param);
|
|
friend void memory_param_restore_handler(void *devptr, bx_param_c *param, Bit64s val);
|
|
};
|
|
|
|
BOCHSAPI extern BX_MEM_C bx_mem;
|
|
|
|
// must be power of two
|
|
#define BX_MEM_BLOCK_LEN (128*1024) /* 128K blocks */
|
|
|
|
/*
|
|
BX_CPP_INLINE Bit8u* BX_MEM_C::get_vector(bx_phy_address addr)
|
|
{
|
|
return (BX_MEM_THIS vector + addr);
|
|
}
|
|
*/
|
|
|
|
BX_CPP_INLINE Bit8u* BX_MEM_C::get_vector(bx_phy_address addr)
|
|
{
|
|
Bit32u block = (Bit32u)(addr / BX_MEM_BLOCK_LEN);
|
|
#if (BX_LARGE_RAMFILE)
|
|
if (!BX_MEM_THIS blocks[block] || (BX_MEM_THIS blocks[block] == BX_MEM_THIS swapped_out))
|
|
#else
|
|
if (!BX_MEM_THIS blocks[block])
|
|
#endif
|
|
allocate_block(block);
|
|
|
|
return BX_MEM_THIS blocks[block] + (Bit32u)(addr & (BX_MEM_BLOCK_LEN-1));
|
|
}
|
|
|
|
BX_CPP_INLINE Bit64u BX_MEM_C::get_memory_len(void)
|
|
{
|
|
return (BX_MEM_THIS len);
|
|
}
|
|
|
|
#endif
|