// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2002 MandrakeSoft S.A.
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "disk.h" // cdrom_13
#include "util.h" // memset
-#include "ata.h" // ATA_CMD_READ_SECTORS
+#include "bregs.h" // struct bregs
+#include "biosvar.h" // GET_EBDA
+#include "atabits.h" // ATA_TYPE_ATAPI
/****************************************************************
static void
cdrom_134500(struct bregs *regs, u8 device)
{
- u8 locks = GET_EBDA(ata.devices[device].lock);
+ u16 ebda_seg = get_ebda_seg();
+ u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[device]);
if (locks == 0xff) {
regs->al = 1;
disk_ret(regs, DISK_RET_ETOOMANYLOCKS);
return;
}
- SET_EBDA(ata.devices[device].lock, locks + 1);
+ SET_EBDA2(ebda_seg, cdrom_locks[device], locks + 1);
regs->al = 1;
disk_ret(regs, DISK_RET_SUCCESS);
}
static void
cdrom_134501(struct bregs *regs, u8 device)
{
- u8 locks = GET_EBDA(ata.devices[device].lock);
+ u16 ebda_seg = get_ebda_seg();
+ u8 locks = GET_EBDA2(ebda_seg, cdrom_locks[device]);
if (locks == 0x00) {
regs->al = 0;
disk_ret(regs, DISK_RET_ENOTLOCKED);
return;
}
locks--;
- SET_EBDA(ata.devices[device].lock, locks);
+ SET_EBDA2(ebda_seg, cdrom_locks[device], locks);
regs->al = (locks ? 1 : 0);
disk_ret(regs, DISK_RET_SUCCESS);
}
static void
cdrom_134502(struct bregs *regs, u8 device)
{
- u8 locks = GET_EBDA(ata.devices[device].lock);
+ u8 locks = GET_EBDA(cdrom_locks[device]);
regs->al = (locks ? 1 : 0);
disk_ret(regs, DISK_RET_SUCCESS);
}
static void
cdrom_1346(struct bregs *regs, u8 device)
{
- u8 locks = GET_EBDA(ata.devices[device].lock);
+ u8 locks = GET_EBDA(cdrom_locks[device]);
if (locks != 0) {
disk_ret(regs, DISK_RET_ELOCKED);
return;
* CD emulation
****************************************************************/
-// Read a series of 512 byte sectors from the cdrom starting at the
-// image offset.
-__always_inline int
-cdrom_read_emu(u16 biosid, u32 vlba, u32 count, void *far_buffer)
-{
- u32 ilba = GET_EBDA(cdemu.ilba);
- return cdrom_read_512(biosid, ilba * 4 + vlba, count, far_buffer);
-}
-
// read disk drive parameters
static void
cdemu_1308(struct bregs *regs, u8 device)
{
- u16 nlc = GET_EBDA(cdemu.vdevice.cylinders) - 1;
- u16 nlh = GET_EBDA(cdemu.vdevice.heads) - 1;
- u16 nlspt = GET_EBDA(cdemu.vdevice.spt);
+ u16 ebda_seg = get_ebda_seg();
+ u16 nlc = GET_EBDA2(ebda_seg, cdemu.cylinders) - 1;
+ u16 nlh = GET_EBDA2(ebda_seg, cdemu.heads) - 1;
+ u16 nlspt = GET_EBDA2(ebda_seg, cdemu.spt);
regs->al = 0x00;
regs->bl = 0x00;
// FIXME ElTorito Various. should send the real count of drives 1 or 2
// FIXME ElTorito Harddisk. should send the HD count
regs->dl = 0x02;
- u8 media = GET_EBDA(cdemu.media);
+ u8 media = GET_EBDA2(ebda_seg, cdemu.media);
if (media <= 3)
regs->bl = media * 2;
{
//debug_stub(regs);
- u8 device = GET_EBDA(cdemu.controller_index) * 2;
- device += GET_EBDA(cdemu.device_spec);
+ u16 ebda_seg = get_ebda_seg();
+ u8 device = GET_EBDA2(ebda_seg, cdemu.controller_index) * 2;
+ device += GET_EBDA2(ebda_seg, cdemu.device_spec);
switch (regs->ah) {
// These functions are the same as for hard disks
cdemu_134b(struct bregs *regs)
{
// FIXME ElTorito Hardcoded
+ u16 ebda_seg = get_ebda_seg();
SET_INT13ET(regs, size, 0x13);
- SET_INT13ET(regs, media, GET_EBDA(cdemu.media));
- SET_INT13ET(regs, emulated_drive, GET_EBDA(cdemu.emulated_drive));
- SET_INT13ET(regs, controller_index, GET_EBDA(cdemu.controller_index));
- SET_INT13ET(regs, ilba, GET_EBDA(cdemu.ilba));
- SET_INT13ET(regs, device_spec, GET_EBDA(cdemu.device_spec));
- SET_INT13ET(regs, buffer_segment, GET_EBDA(cdemu.buffer_segment));
- SET_INT13ET(regs, load_segment, GET_EBDA(cdemu.load_segment));
- SET_INT13ET(regs, sector_count, GET_EBDA(cdemu.sector_count));
- SET_INT13ET(regs, cylinders, GET_EBDA(cdemu.vdevice.cylinders));
- SET_INT13ET(regs, sectors, GET_EBDA(cdemu.vdevice.spt));
- SET_INT13ET(regs, heads, GET_EBDA(cdemu.vdevice.heads));
+ SET_INT13ET(regs, media, GET_EBDA2(ebda_seg, cdemu.media));
+ SET_INT13ET(regs, emulated_drive, GET_EBDA2(ebda_seg, cdemu.emulated_drive));
+ SET_INT13ET(regs, controller_index
+ , GET_EBDA2(ebda_seg, cdemu.controller_index));
+ SET_INT13ET(regs, ilba, GET_EBDA2(ebda_seg, cdemu.ilba));
+ SET_INT13ET(regs, device_spec, GET_EBDA2(ebda_seg, cdemu.device_spec));
+ SET_INT13ET(regs, buffer_segment, GET_EBDA2(ebda_seg, cdemu.buffer_segment));
+ SET_INT13ET(regs, load_segment, GET_EBDA2(ebda_seg, cdemu.load_segment));
+ SET_INT13ET(regs, sector_count, GET_EBDA2(ebda_seg, cdemu.sector_count));
+ SET_INT13ET(regs, cylinders, GET_EBDA2(ebda_seg, cdemu.cylinders));
+ SET_INT13ET(regs, sectors, GET_EBDA2(ebda_seg, cdemu.spt));
+ SET_INT13ET(regs, heads, GET_EBDA2(ebda_seg, cdemu.heads));
// If we have to terminate emulation
if (regs->al == 0x00) {
// FIXME ElTorito Various. Should be handled accordingly to spec
- SET_EBDA(cdemu.active, 0x00); // bye bye
+ SET_EBDA2(ebda_seg, cdemu.active, 0x00); // bye bye
}
disk_ret(regs, DISK_RET_SUCCESS);
static int
atapi_is_ready(u16 device)
{
- if (GET_EBDA(ata.devices[device].type) != ATA_TYPE_ATAPI) {
+ if (GET_GLOBAL(ATA.devices[device].type) != ATA_TYPE_ATAPI) {
printf("not implemented for non-ATAPI device\n");
return -1;
}
| (u32) buf[6] << 8
| (u32) buf[7] << 0;
- if (block_len != 2048 && block_len != 512) {
+ if (block_len != GET_GLOBAL(ATA.devices[device].blksize)) {
printf("Unsupported sector size %u\n", block_len);
return -1;
}
- SET_EBDA(ata.devices[device].blksize, block_len);
u32 sectors = (u32) buf[0] << 24
| (u32) buf[1] << 16
| (u32) buf[3] << 0;
dprintf(6, "sectors=%u\n", sectors);
- if (block_len == 2048)
- sectors <<= 2; /* # of sectors in 512-byte "soft" sector */
- if (sectors != GET_EBDA(ata.devices[device].sectors))
- printf("%dMB medium detected\n", sectors>>(20-9));
- SET_EBDA(ata.devices[device].sectors, sectors);
+ printf("%dMB medium detected\n", sectors>>(20-11));
return 0;
}
if (device >= CONFIG_MAX_ATA_DEVICES)
return 0;
- if (GET_EBDA(ata.devices[device].type) != ATA_TYPE_ATAPI)
+ if (GET_GLOBAL(ATA.devices[device].type) != ATA_TYPE_ATAPI)
return 0;
- if (GET_EBDA(ata.devices[device].device) != ATA_DEVICE_CDROM)
+ if (GET_GLOBAL(ATA.devices[device].device) != ATA_DEVICE_CDROM)
return 0;
return 1;
{
u8 *s2 = (u8*)cs_s2;
for (;;) {
- if (*s1 != GET_VAR(CS, *s2))
+ if (*s1 != GET_GLOBAL(*s2))
return 0;
if (! *s1)
return 1;
for (device=0; device<CONFIG_MAX_ATA_DEVICES; device++)
if (atapi_is_cdrom(device))
break;
+ if (device >= CONFIG_MAX_ATA_DEVICES)
+ // cdrom not found
+ return 2;
int ret = atapi_is_ready(device);
if (ret)
- dprintf(1, "ata_is_ready returned %d\n", ret);
-
- // if not found
- if (device >= CONFIG_MAX_ATA_DEVICES)
- return 2;
+ dprintf(1, "atapi_is_ready returned %d\n", ret);
// Read the Boot Record Volume Descriptor
u8 buffer[2048];
- ret = cdrom_read(device, 0x11, 1
- , MAKE_FARPTR(GET_SEG(SS), (u32)buffer));
+ struct disk_op_s dop;
+ dop.driveid = device;
+ dop.lba = 0x11;
+ dop.count = 1;
+ dop.far_buffer = MAKE_FARPTR(GET_SEG(SS), (u32)buffer);
+ ret = cdrom_read(&dop);
if (ret)
return 3;
u32 lba = *(u32*)&buffer[0x47];
// And we read the Boot Catalog
- ret = cdrom_read(device, lba, 1
- , MAKE_FARPTR(GET_SEG(SS), (u32)buffer));
+ dop.lba = lba;
+ ret = cdrom_read(&dop);
if (ret)
return 7;
if (buffer[0x20] != 0x88)
return 11; // Bootable
+ u16 ebda_seg = get_ebda_seg();
u8 media = buffer[0x21];
- SET_EBDA(cdemu.media, media);
+ SET_EBDA2(ebda_seg, cdemu.media, media);
- SET_EBDA(cdemu.controller_index, device/2);
- SET_EBDA(cdemu.device_spec, device%2);
+ SET_EBDA2(ebda_seg, cdemu.controller_index, device/2);
+ SET_EBDA2(ebda_seg, cdemu.device_spec, device%2);
u16 boot_segment = *(u16*)&buffer[0x22];
if (!boot_segment)
boot_segment = 0x07C0;
- SET_EBDA(cdemu.load_segment, boot_segment);
- SET_EBDA(cdemu.buffer_segment, 0x0000);
+ SET_EBDA2(ebda_seg, cdemu.load_segment, boot_segment);
+ SET_EBDA2(ebda_seg, cdemu.buffer_segment, 0x0000);
u16 nbsectors = *(u16*)&buffer[0x26];
- SET_EBDA(cdemu.sector_count, nbsectors);
+ SET_EBDA2(ebda_seg, cdemu.sector_count, nbsectors);
lba = *(u32*)&buffer[0x28];
- SET_EBDA(cdemu.ilba, lba);
+ SET_EBDA2(ebda_seg, cdemu.ilba, lba);
// And we read the image in memory
- ret = cdrom_read_emu(device, 0, nbsectors, MAKE_FARPTR(boot_segment, 0));
+ dop.lba = lba * 4;
+ dop.count = nbsectors;
+ dop.far_buffer = MAKE_FARPTR(boot_segment, 0);
+ ret = cdrom_read_512(&dop);
if (ret)
return 12;
// FIXME ElTorito Hardcoded. cdrom is hardcoded as device 0xE0.
// Win2000 cd boot needs to know it booted from cd
- SET_EBDA(cdemu.emulated_drive, 0xE0);
+ SET_EBDA2(ebda_seg, cdemu.emulated_drive, 0xE0);
return 0;
}
// number of devices
if (media < 4) {
// Floppy emulation
- SET_EBDA(cdemu.emulated_drive, 0x00);
+ SET_EBDA2(ebda_seg, cdemu.emulated_drive, 0x00);
SETBITS_BDA(equipment_list_flags, 0x41);
} else {
// Harddrive emulation
- SET_EBDA(cdemu.emulated_drive, 0x80);
- SET_EBDA(ata.hdcount, GET_EBDA(ata.hdcount) + 1);
+ SET_EBDA2(ebda_seg, cdemu.emulated_drive, 0x80);
+ SET_BDA(hdcount, GET_BDA(hdcount) + 1);
}
// Remember the media type
switch (media) {
case 0x01: // 1.2M floppy
- SET_EBDA(cdemu.vdevice.spt, 15);
- SET_EBDA(cdemu.vdevice.cylinders, 80);
- SET_EBDA(cdemu.vdevice.heads, 2);
+ SET_EBDA2(ebda_seg, cdemu.spt, 15);
+ SET_EBDA2(ebda_seg, cdemu.cylinders, 80);
+ SET_EBDA2(ebda_seg, cdemu.heads, 2);
break;
case 0x02: // 1.44M floppy
- SET_EBDA(cdemu.vdevice.spt, 18);
- SET_EBDA(cdemu.vdevice.cylinders, 80);
- SET_EBDA(cdemu.vdevice.heads, 2);
+ SET_EBDA2(ebda_seg, cdemu.spt, 18);
+ SET_EBDA2(ebda_seg, cdemu.cylinders, 80);
+ SET_EBDA2(ebda_seg, cdemu.heads, 2);
break;
case 0x03: // 2.88M floppy
- SET_EBDA(cdemu.vdevice.spt, 36);
- SET_EBDA(cdemu.vdevice.cylinders, 80);
- SET_EBDA(cdemu.vdevice.heads, 2);
+ SET_EBDA2(ebda_seg, cdemu.spt, 36);
+ SET_EBDA2(ebda_seg, cdemu.cylinders, 80);
+ SET_EBDA2(ebda_seg, cdemu.heads, 2);
break;
case 0x04: { // Harddrive
u16 spt = GET_FARVAR(boot_segment,*(u8*)(446+6));
u16 cyl = (spt << 2) + GET_FARVAR(boot_segment,*(u8*)(446+7)) + 1;
u16 heads = GET_FARVAR(boot_segment,*(u8*)(446+5)) + 1;
- SET_EBDA(cdemu.vdevice.spt, spt & 0x3f);
- SET_EBDA(cdemu.vdevice.cylinders, cyl);
- SET_EBDA(cdemu.vdevice.heads, heads);
+ SET_EBDA2(ebda_seg, cdemu.spt, spt & 0x3f);
+ SET_EBDA2(ebda_seg, cdemu.cylinders, cyl);
+ SET_EBDA2(ebda_seg, cdemu.heads, heads);
break;
}
}
// everything is ok, so from now on, the emulation is active
- SET_EBDA(cdemu.active, 0x01);
+ SET_EBDA2(ebda_seg, cdemu.active, 0x01);
dprintf(6, "cdemu media=%d\n", media);
return 0;
projects / seabios.git / blobdiff