*
* @APPLE_LICENSE_HEADER_START@
*
- * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
- * Reserved. This file contains Original Code and/or Modifications of
- * Original Code as defined in and that are subject to the Apple Public
- * Source License Version 1.1 (the "License"). You may not use this file
- * except in compliance with the License. Please obtain a copy of the
- * License at http://www.apple.com/publicsource and read it before using
- * this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
*
* The Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
* All rights reserved.
*/
+#include "bootstruct.h"
#include "libsaio.h"
+#define MAX_DRIVES 8
+
static biosBuf_t bb;
-unsigned char uses_ebios[8] = {0, 0, 0, 0, 0, 0, 0, 0};
int bgetc(void)
{
return time.i;
}
-int memsize(int which)
+unsigned long getMemoryMap( MemoryRange * rangeArray,
+ unsigned long maxRangeCount,
+ unsigned long * conMemSizePtr,
+ unsigned long * extMemSizePtr )
{
- int size;
-
- if ( which )
+ #define kMemoryMapSignature 'SMAP'
+ #define kDescriptorSizeMin 20
+
+ MemoryRange * range = rangeArray;
+ unsigned long count = 0;
+ unsigned long long conMemSize = 0;
+ unsigned long long extMemTop = 0;
+
+ // The memory pointed by the rangeArray must reside within the
+ // first megabyte.
+ //
+ // Prepare for the INT15 E820h call. Each call returns a single
+ // memory range. A continuation value is returned that must be
+ // provided on a subsequent call to fetch the next range.
+ //
+ // Certain BIOSes (Award 6.00PG) expect the upper word in EAX
+ // to be cleared on entry, otherwise only a single range will
+ // be reported.
+ //
+ // Some BIOSes will simply ignore the value of ECX on entry.
+ // Probably best to keep its value at 20 to avoid surprises.
+
+ bb.ebx.rx = 0; // Initial continuation value must be zero.
+
+ while ( count < maxRangeCount )
{
- // Get the total system memory discovered by the
- // BIOS in kilobytes.
+ bb.intno = 0x15;
+ bb.eax.rx = 0xe820;
+ bb.ecx.rx = kDescriptorSizeMin;
+ bb.edx.rx = kMemoryMapSignature;
+ bb.edi.rr = OFFSET( (unsigned long) range );
+ bb.es = SEGMENT( (unsigned long) range );
+ bios(&bb);
- get_memsize(&bb);
- size = (bb.edx.rr << 16) | bb.eax.rr;
+ // Check for errors.
- // Convert to extended memory size.
+ if ( bb.flags.cf
+ || bb.eax.rx != kMemoryMapSignature
+ || bb.ecx.rx != kDescriptorSizeMin ) break;
- size = ( size > 1024 ) ? size - 1024 : 0;
- }
- else
- {
- // Get amount of conventional memory available.
+ // Tally up the conventional/extended memory sizes.
- bb.intno = 0x12;
- bios(&bb);
- size = bb.eax.rr;
+ if ( range->type == kMemoryRangeUsable ||
+ range->type == kMemoryRangeACPI ||
+ range->type == kMemoryRangeNVS )
+ {
+ // Tally the conventional memory ranges.
+ if ( range->base + range->length <= 0xa0000 )
+ conMemSize += range->length;
+
+ // Record the top of extended memory.
+ if ( range->base >= EXTENDED_ADDR &&
+ range->base >= extMemTop )
+ extMemTop = range->base + range->length;
+ }
+
+ range++;
+ count++;
+
+ // Is this the last address range?
+
+ if ( bb.ebx.rx == 0 ) break;
}
- return size;
+
+ if (extMemTop) extMemTop -= EXTENDED_ADDR; // convert to size
+ *conMemSizePtr = conMemSize / 1024; // size in KB
+ *extMemSizePtr = extMemTop / 1024; // size in KB
+
+ return count;
+}
+
+unsigned long getExtendedMemorySize()
+{
+ // Get extended memory size for large configurations. Not used unless
+ // the INT15, E820H call (Get System Address Map) failed.
+ //
+ // Input:
+ //
+ // AX Function Code E801h
+ //
+ // Outputs:
+ //
+ // CF Carry Flag Carry cleared indicates no error.
+ // AX Extended 1 Number of contiguous KB between 1 and 16 MB,
+ // maximum 0x3C00 = 15 MB.
+ // BX Extended 2 Number of contiguous 64 KB blocks between
+ // 16 MB and 4 GB.
+ // CX Configured 1 Number of contiguous KB between 1 and 16 MB,
+ // maximum 0x3C00 = 15 MB.
+ // DX Configured 2 Number of contiguous 64 KB blocks between
+ // 16 MB and 4 GB.
+
+ bb.intno = 0x15;
+ bb.eax.rx = 0xe801;
+ bios(&bb);
+
+ // Return the size of memory above 1MB (extended memory) in kilobytes.
+
+ if ( bb.flags.cf == 0 ) return (bb.ebx.rr * 64 + bb.eax.rr);
+
+ // Get Extended memory size. Called on last resort since the return
+ // value is limited to 16-bits (a little less than 64MB max). May
+ // not be supported by modern BIOSes.
+ //
+ // Input:
+ //
+ // AX Function Code E801h
+ //
+ // Outputs:
+ //
+ // CF Carry Flag Carry cleared indicates no error.
+ // AX Memory Count Number of contiguous KB above 1MB.
+
+ bb.intno = 0x15;
+ bb.eax.rx = 0x88;
+ bios(&bb);
+
+ // Return the size of memory above 1MB (extended memory) in kilobytes.
+
+ return bb.flags.cf ? 0 : bb.eax.rr;
+}
+
+unsigned long getConventionalMemorySize()
+{
+ bb.intno = 0x12;
+ bios(&bb);
+ return bb.eax.rr; // kilobytes
}
void video_mode(int mode)
bios(&bb);
}
-unsigned int get_diskinfo(int drive)
+/* Check to see if the passed-in drive is in El Torito no-emulation mode. */
+int is_no_emulation(int drive)
{
- static struct {
- unsigned short size;
- unsigned short flags;
- unsigned long cylinders;
- unsigned long heads;
- unsigned long sectors;
- unsigned long long total_sectors;
- unsigned short bps;
- unsigned long params_p;
- } ebios = {0};
- unsigned char useEbios = 0;
+ struct packet {
+ unsigned char packet_size;
+ unsigned char media_type;
+ unsigned char drive_num;
+ unsigned char ctrlr_index;
+ unsigned long lba;
+ unsigned short device_spec;
+ unsigned short buffer_segment;
+ unsigned short load_segment;
+ unsigned short sector_count;
+ unsigned char cyl_count;
+ unsigned char sec_count;
+ unsigned char head_count;
+ unsigned char reseved;
+ };
+ static struct packet pkt;
- union {
- compact_diskinfo_t di;
- unsigned int ui;
- } ret;
- static int maxhd = 0;
+ bzero(&pkt, sizeof(pkt));
+ pkt.packet_size = 0x13;
+
+ bb.intno = 0x13;
+ bb.eax.r.h = 0x4b;
+ bb.eax.r.l = 0x01; // subfunc: get info
+ bb.edx.r.l = drive;
+ bb.esi.rr = OFFSET((unsigned)&pkt);
+ bb.ds = SEGMENT((unsigned)&pkt);
+
+ bios(&bb);
+#if DEBUG
+ printf("el_torito info drive %x\n", drive);
+
+ printf("--> cf %x, eax %x\n", bb.flags.cf, bb.eax.rr);
- ret.ui = 0;
+ printf("pkt_size: %x\n", pkt.packet_size);
+ printf("media_type: %x\n", pkt.media_type);
+ printf("drive_num: %x\n", pkt.drive_num);
+ printf("device_spec: %x\n", pkt.device_spec);
+ printf("press a key->\n");getc();
+#endif
+
+ /* Some BIOSes erroneously return cf = 1 */
+ /* Just check to see if the drive number is the same. */
+ if (pkt.drive_num == drive) {
+ if ((pkt.media_type & 0x0F) == 0) {
+ /* We are in no-emulation mode. */
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+#if DEBUG
+/*
+ * BIOS drive information.
+ */
+void print_drive_info(boot_drive_info_t *dp)
+{
+ // printf("buf_size = %x\n", dp->params.buf_size);
+ printf("info_flags = %x\n", dp->params.info_flags);
+ printf(" phys_cyls = %lx\n", dp->params. phys_cyls);
+ printf(" phys_heads = %lx\n", dp->params. phys_heads);
+ printf(" phys_spt = %lx\n", dp->params. phys_spt);
+ printf("phys_sectors = %lx%lx\n", ((unsigned long *)(&dp->params.phys_sectors))[1],
+ ((unsigned long *)(&dp->params.phys_sectors))[0]);
+ printf("phys_nbps = %x\n", dp->params.phys_nbps);
+ // printf("dpte_offset = %x\n", dp->params.dpte_offset);
+ // printf("dpte_segment = %x\n", dp->params.dpte_segment);
+ // printf("key = %x\n", dp->params.key);
+ // printf("path_len = %x\n", dp->params. path_len);
+ // printf("reserved1 = %x\n", dp->params. reserved1);
+ // printf("reserved2 = %x\n", dp->params.reserved2);
+ //printf("bus_type[4] = %x\n", dp->params. bus_type[4]);
+ //printf("interface_type[8] = %x\n", dp->params. interface_type[8]);
+ //printf("interface_path[8] = %x\n", dp->params. interface_path[8]);
+ //printf("dev_path[8] = %x\n", dp->params. dev_path[8]);
+ // printf("reserved3 = %x\n", dp->params. reserved3);
+ // printf("checksum = %x\n", dp->params. checksum);
+
+ printf(" io_port_base = %x\n", dp->dpte.io_port_base);
+ printf(" control_port_base = %x\n", dp->dpte.control_port_base);
+ printf(" head_flags = %x\n", dp->dpte. head_flags);
+ printf(" vendor_info = %x\n", dp->dpte. vendor_info);
+ printf(" irq = %x\n", dp->dpte. irq);
+ // printf(" irq_unused = %x\n", dp->dpte. irq_unused);
+ printf(" block_count = %x\n", dp->dpte. block_count);
+ printf(" dma_channe = %x\n", dp->dpte. dma_channel);
+ printf(" dma_type = %x\n", dp->dpte. dma_type);
+ printf(" pio_type = %x\n", dp->dpte. pio_type);
+ printf(" pio_unused = %x\n", dp->dpte. pio_unused);
+ printf(" option_flags = %x\n", dp->dpte.option_flags);
+ // printf(" reserved = %x\n", dp->dpte.reserved);
+ printf(" revision = %x\n", dp->dpte. revision);
+ // printf(" checksum = %x\n", dp->dpte. checksum);
+}
+
+#endif
+
+int get_drive_info(int drive, struct driveInfo *dp)
+{
+ boot_drive_info_t *di = &dp->di;
+ int ret = 0;
+
+#if 0
if (maxhd == 0) {
bb.intno = 0x13;
bb.eax.r.h = 0x08;
if (drive > maxhd)
return 0;
+#endif
+
+ bzero(dp, sizeof(struct driveInfo));
+ dp->biosdev = drive;
+
+ /* Check for El Torito no-emulation mode. */
+ dp->no_emulation = is_no_emulation(drive);
/* Check drive for EBIOS support. */
bb.intno = 0x13;
bb.edx.r.l = drive;
bb.ebx.rr = 0x55aa;
bios(&bb);
- if(bb.ebx.rr == 0xaa55 && bb.flags.cf == 0) {
+ if((bb.ebx.rr == 0xaa55) && (bb.flags.cf == 0)) {
/* Get flags for supported operations. */
- useEbios = bb.ecx.r.l;
+ dp->uses_ebios = bb.ecx.r.l;
}
- if (useEbios & EBIOS_ENHANCED_DRIVE_INFO) {
+ if (dp->uses_ebios & (EBIOS_ENHANCED_DRIVE_INFO | EBIOS_LOCKING_ACCESS | EBIOS_FIXED_DISK_ACCESS)) {
/* Get EBIOS drive info. */
- ebios.size = 26;
+ static struct drive_params params;
+
+ params.buf_size = sizeof(params);
bb.intno = 0x13;
bb.eax.r.h = 0x48;
bb.edx.r.l = drive;
- bb.esi.rr = OFFSET((unsigned)&ebios);
- bb.ds = SEGMENT((unsigned)&ebios);
+ bb.esi.rr = OFFSET((unsigned)¶ms);
+ bb.ds = SEGMENT((unsigned)¶ms);
bios(&bb);
- if(bb.flags.cf != 0) {
- useEbios = 0;
- }
+ if(bb.flags.cf != 0 /* || params.phys_sectors < 2097152 */) {
+ dp->uses_ebios = 0;
+ di->params.buf_size = 1;
+ } else {
+ bcopy(¶ms, &di->params, sizeof(params));
+
+ if (drive >= BASE_HD_DRIVE &&
+ (dp->uses_ebios & EBIOS_ENHANCED_DRIVE_INFO) &&
+ di->params.buf_size >= 30 &&
+ !(di->params.dpte_offset == 0xFFFF && di->params.dpte_segment == 0xFFFF)) {
+ void *ptr = (void *)(di->params.dpte_offset + ((unsigned int)di->params.dpte_segment << 4));
+ bcopy(ptr, &di->dpte, sizeof(di->dpte));
+ }
+ }
}
- bb.intno = 0x13;
- bb.eax.r.h = 0x08;
- bb.edx.r.l = drive;
- bios(&bb);
- if (bb.flags.cf == 0 && bb.eax.r.h == 0) {
- unsigned long cyl;
- unsigned long sec;
- unsigned long hds;
-
- hds = bb.edx.r.h;
- sec = bb.ecx.r.l & 0x3F;
- if(useEbios & EBIOS_ENHANCED_DRIVE_INFO) {
- cyl = (ebios.total_sectors / ((hds + 1) * sec)) - 1;
- }
- else {
- cyl = bb.ecx.r.h | ((bb.ecx.r.l & 0xC0) << 2);
- }
- ret.di.heads = hds;
- ret.di.sectors = sec;
- ret.di.cylinders = cyl;
+ if (di->params.phys_heads == 0 || di->params.phys_spt == 0) {
+ /* Either it's not EBIOS, or EBIOS didn't tell us. */
+ bb.intno = 0x13;
+ bb.eax.r.h = 0x08;
+ bb.edx.r.l = drive;
+ bios(&bb);
+ if (bb.flags.cf == 0 && bb.eax.r.h == 0) {
+ unsigned long cyl;
+ unsigned long sec;
+ unsigned long hds;
+
+ hds = bb.edx.r.h;
+ sec = bb.ecx.r.l & 0x3F;
+ if((dp->uses_ebios & EBIOS_ENHANCED_DRIVE_INFO) && (sec != 0)) {
+ cyl = (di->params.phys_sectors / ((hds + 1) * sec)) - 1;
+ }
+ else {
+ cyl = bb.ecx.r.h | ((bb.ecx.r.l & 0xC0) << 2);
+ }
+ di->params.phys_heads = hds;
+ di->params.phys_spt = sec;
+ di->params.phys_cyls = cyl;
+ } else {
+ ret = -1;
+ }
+ }
+
+ if (dp->no_emulation) {
+ /* Some BIOSes give us erroneous EBIOS support information.
+ * Assume that if you're on a CD, then you can use
+ * EBIOS disk calls.
+ */
+ dp->uses_ebios |= EBIOS_FIXED_DISK_ACCESS;
+ }
+#if DEBUG
+ print_drive_info(di);
+ printf("uses_ebios = 0x%x\n", dp->uses_ebios);
+ printf("press a key->\n");getc();
+#endif
+
+ if (ret == 0) {
+ dp->valid = 1;
}
- if(drive >= 0x80) uses_ebios[drive - 0x80] = useEbios;
- return ret.ui;
+ return ret;
}
void setCursorPosition(int x, int y, int page)
int terminateDiskEmulation()
{
- static char cd_spec[0x12];
+ static char cd_spec[0x13];
bb.intno = 0x13;
bb.eax.r.h = 0x4b;
int
APMPresent(void)
{
- KERNBOOTSTRUCT *kbp = kernBootStruct;
-
bb.intno = APM_INTNO;
bb.eax.r.h = APM_INTCODE;
bb.eax.r.l = 0x00;
(bb.ebx.r.h == 'P') &&
(bb.ebx.r.l == 'M')) {
/* Success */
- kbp->apmConfig.major_vers = bb.eax.r.h;
- kbp->apmConfig.minor_vers = bb.eax.r.l;
- kbp->apmConfig.flags.data = bb.ecx.rr;
+ bootArgs->apmConfig.major_vers = bb.eax.r.h;
+ bootArgs->apmConfig.minor_vers = bb.eax.r.l;
+ bootArgs->apmConfig.flags.data = bb.ecx.rr;
return 1;
}
return 0;
int
APMConnect32(void)
{
- KERNBOOTSTRUCT *kbp = kernBootStruct;
-
bb.intno = APM_INTNO;
bb.eax.r.h = APM_INTCODE;
bb.eax.r.l = 0x03;
bios(&bb);
if (bb.flags.cf == 0) {
/* Success */
- kbp->apmConfig.cs32_base = (bb.eax.rr) << 4;
- kbp->apmConfig.entry_offset = bb.ebx.rx;
- kbp->apmConfig.cs16_base = (bb.ecx.rr) << 4;
- kbp->apmConfig.ds_base = (bb.edx.rr) << 4;
- if (kbp->apmConfig.major_vers >= 1 &&
- kbp->apmConfig.minor_vers >= 1) {
- kbp->apmConfig.cs_length = bb.esi.rr;
- kbp->apmConfig.ds_length = bb.edi.rr;
+ bootArgs->apmConfig.cs32_base = (bb.eax.rr) << 4;
+ bootArgs->apmConfig.entry_offset = bb.ebx.rx;
+ bootArgs->apmConfig.cs16_base = (bb.ecx.rr) << 4;
+ bootArgs->apmConfig.ds_base = (bb.edx.rr) << 4;
+ if (bootArgs->apmConfig.major_vers >= 1 &&
+ bootArgs->apmConfig.minor_vers >= 1) {
+ bootArgs->apmConfig.cs_length = bb.esi.rr;
+ bootArgs->apmConfig.ds_length = bb.edi.rr;
} else {
- kbp->apmConfig.cs_length =
- kbp->apmConfig.ds_length = 64 * 1024;
+ bootArgs->apmConfig.cs_length =
+ bootArgs->apmConfig.ds_length = 64 * 1024;
}
- kbp->apmConfig.connected = 1;
+ bootArgs->apmConfig.connected = 1;
return 1;
}
return 0;
}
return -1;
}
+
+void sleep(int n)
+{
+ unsigned int endtime = (time18() + 18*n);
+ while (time18() < endtime);
+}
+
+void delay(int ms)
+{
+ bb.intno = 0x15;
+ bb.eax.r.h = 0x86;
+ bb.ecx.rr = ms >> 16;
+ bb.edx.rr = ms & 0xFFFF;
+ bios(&bb);
+}
projects / apple / boot.git / blobdiff