void memcheck_type_init()
{
memcheck_addtype('d', "Base DOS memory (first 640K)");
memcheck_addtype('r', "Dosemu reserved area");
memcheck_addtype('h', "Direct-mapped hardware page frame");
memcheck_addtype('D', "blocks mapped to disk");
}
void map_video_bios(void)
{
v_printf("Mapping VBIOS = %d\n",config.mapped_bios);
if (config.mapped_bios) {
if (config.vbios_file) {
warn("WARN: loading VBIOS %s into mem at %#x (%#X bytes)\n",
config.vbios_file, VBIOS_START, VBIOS_SIZE);
load_file(config.vbios_file, 0, LINEAR2UNIX(VBIOS_START), VBIOS_SIZE);
}
else if (config.vbios_copy) {
warn("WARN: copying VBIOS from /dev/mem at %#x (%#X bytes)\n",
VBIOS_START, VBIOS_SIZE);
load_file("/dev/mem", VBIOS_START, LINEAR2UNIX(VBIOS_START), VBIOS_SIZE);
}
else {
warn("WARN: copying VBIOS file from /dev/mem\n");
load_file("/dev/mem", VBIOS_START, LINEAR2UNIX(VBIOS_START), VBIOS_SIZE);
}
/* copy graphics characters from system BIOS */
load_file("/dev/mem", GFX_CHARS, LINEAR2UNIX(GFX_CHARS), GFXCHAR_SIZE);
memcheck_addtype('V', "Video BIOS");
memcheck_reserve('V', VBIOS_START, VBIOS_SIZE);
if (!config.vbios_post || config.chipset == VESA)
load_file("/dev/mem", 0, (unsigned char *)int_bios_area, sizeof(int_bios_area));
}
}
static int
umb_setup(void)
{
int i;
size_t addr_start;
int size, umb;
for (i = 0; i < UMBS; i++) {
umbs[i].in_use = FALSE;
}
memcheck_addtype('U', "Upper Memory Block (UMB, XMS 3.0)");
addr_start = 0x00000; /* start address */
while ((size = memcheck_findhole(&addr_start, 1024, 0x100000)) != 0) {
Debug0((dbg_fd, "findhole - from 0x%5.5zX, %dKb\n", addr_start, size/1024));
memcheck_reserve('U', addr_start, size);
if (addr_start == 0xa0000 && config.umb_a0 == 2) {
// FreeDOS UMB bug, reserve 1 para
const int rsv = 16;
addr_start += rsv;
size -= rsv;
}
umb = umb_find_unused();
umbs[umb].in_use = TRUE;
umbs[umb].free = TRUE;
umbs[umb].addr = addr_start;
umbs[umb].size = size;
}
for (i = 0; i < UMBS; i++) {
if (umbs[i].in_use && umbs[i].free) {
unsigned int addr = umbs[i].addr;
vm_size_t size = umbs[i].size;
#if 0
MACH_CALL((vm_deallocate(mach_task_self(),
addr,
(vm_size_t) size)), "vm_deallocate");
MACH_CALL((vm_allocate(mach_task_self(), &addr,
(vm_size_t) size,
FALSE)),
"vm_allocate of umb block.");
#else
Debug0((dbg_fd, "umb_setup: addr %x size 0x%04zx\n",
addr, size));
#endif
}
}
return 0;
}
void HMA_init(void)
{
/* initially, no HMA */
HMA_MAP(0);
a20 = 0;
if (config.ext_mem) {
ext_mem_base = mmap_mapping(MAPPING_EXTMEM | MAPPING_SCRATCH, -1,
EXTMEM_SIZE, PROT_READ | PROT_WRITE);
x_printf("Ext.Mem of size 0x%x at %p\n", EXTMEM_SIZE, ext_mem_base);
memcheck_addtype('x', "Extended memory (HMA+XMS)");
memcheck_reserve('x', LOWMEM_SIZE, HMASIZE + EXTMEM_SIZE);
}
}
void vbe_pre_init(void)
{
int i;
vga_mode_info *vmi = NULL;
unsigned int dos_vga_bios = SEGOFF2LINEAR(0xc000,0x0000);
int bios_ptr = (char *) vgaemu_bios_end - (char *) vgaemu_bios_start;
static struct {
char modes[3];
char reserved1[4];
char scanlines;
char character_blocks;
char max_active_blocks;
short support_flags;
short reserved2;
char save_function_flags;
char reserved3;
} vgaemu_bios_functionality_table =
{ .modes = {0xff,0xe0,0x0f}, /* Modes 0-7, 0dh-0fh, 10h-13h supported */
.scanlines = 7, /* scanlines 200,350,400 supported */
.character_blocks = 2, /* This all corresponds to a real BIOS */
.max_active_blocks = 8, /* See Ralf Brown's interrupt list */
.support_flags = 0xeff, /* INT 10h, AH=1b for documentation */
.save_function_flags=0x3f
};
MEMSET_DOS(dos_vga_bios, 0, VBE_BIOS_MAXPAGES << 12); /* one page */
MEMCPY_2DOS(dos_vga_bios, vgaemu_bios_start, bios_ptr);
vgaemu_bios.prod_name = (char *) vgaemu_bios_prod_name - (char *) vgaemu_bios_start;
if (Video->setmode) {
i = (char *) vgaemu_bios_pm_interface_end - (char *) vgaemu_bios_pm_interface;
if(i + bios_ptr > (VBE_BIOS_MAXPAGES << 12) - 8) {
error("VBE: vbe_init: protected mode interface to large, disabling\n");
vgaemu_bios.vbe_pm_interface_len =
vgaemu_bios.vbe_pm_interface = 0;
}
vgaemu_bios.vbe_pm_interface_len = i;
vgaemu_bios.vbe_pm_interface = bios_ptr;
MEMCPY_2DOS(dos_vga_bios + bios_ptr, vgaemu_bios_pm_interface, i);
bios_ptr += i;
bios_ptr = (bios_ptr + 3) & ~3;
vgaemu_bios.vbe_mode_list = bios_ptr;
/* set up video mode list */
for(i = 0x100; i <= vgaemu_bios.vbe_last_mode; i++) {
if((vmi = vga_emu_find_mode(i, NULL))) {
if(vmi->VESA_mode != -1 && bios_ptr < ((VBE_BIOS_MAXPAGES << 12) - 4)) {
WRITE_WORD(dos_vga_bios + bios_ptr, vmi->VESA_mode);
bios_ptr += 2;
}
}
}
WRITE_WORD(dos_vga_bios + bios_ptr, -1);
bios_ptr += 2;
/* add fonts */
vgaemu_bios.font_8 = bios_ptr;
MEMCPY_2DOS(dos_vga_bios + bios_ptr, vga_rom_08, sizeof vga_rom_08);
bios_ptr += sizeof vga_rom_08;
vgaemu_bios.font_14 = bios_ptr;
MEMCPY_2DOS(dos_vga_bios + bios_ptr, vga_rom_14, sizeof vga_rom_14);
bios_ptr += sizeof vga_rom_14;
vgaemu_bios.font_16 = bios_ptr;
MEMCPY_2DOS(dos_vga_bios + bios_ptr, vga_rom_16, sizeof vga_rom_16);
bios_ptr += sizeof vga_rom_16;
vgaemu_bios.font_14_alt = bios_ptr;
MEMCPY_2DOS(dos_vga_bios + bios_ptr, vga_rom_14_alt, sizeof vga_rom_14_alt);
bios_ptr += sizeof vga_rom_14_alt;
vgaemu_bios.font_16_alt = bios_ptr;
MEMCPY_2DOS(dos_vga_bios + bios_ptr, vga_rom_16_alt, sizeof vga_rom_16_alt);
bios_ptr += sizeof vga_rom_16_alt;
} else {
/* only support the initial video mode, can't change it */
vgaemu_bios_functionality_table.modes[0] = 1 << video_mode;
vgaemu_bios_functionality_table.modes[1] =
vgaemu_bios_functionality_table.modes[2] = 0;
}
vgaemu_bios.functionality = bios_ptr;
MEMCPY_2DOS(dos_vga_bios + bios_ptr, &vgaemu_bios_functionality_table,
sizeof vgaemu_bios_functionality_table);
bios_ptr += sizeof vgaemu_bios_functionality_table;
vgaemu_bios.size = bios_ptr;
WRITE_BYTE(dos_vga_bios + 2, (bios_ptr + ((1 << 9) - 1)) >> 9);
vgaemu_bios.pages = (bios_ptr + ((1 << 12) - 1)) >> 12;
if (config.vgaemubios_file) {
/* EXPERIMENTAL: load and boot the Bochs BIOS */
int fd = open(config.vgaemubios_file, O_RDONLY);
int bytes;
if (fd != -1) {
bytes = read(fd, LINEAR2UNIX(0xc0000), 65536);
close(fd);
vgaemu_bios.pages = (bytes + PAGE_SIZE - 1) / PAGE_SIZE;
config.vbios_post = 1;
}
}
memcheck_addtype('V', "VGAEMU Video BIOS");
memcheck_reserve('V', dos_vga_bios, vgaemu_bios.pages << 12);
if(!config.X_pm_interface) {
v_printf("VBE: vbe_init: protected mode interface disabled\n");
}
v_printf(
"VBE: vbe_init: %d pages for VGA BIOS, vga.mem.base = %p\n",
vgaemu_bios.pages, vga.mem.base
);
}