| /SPARTAN/trunk/arch/ia32/include/bios/bios.h |
|---|
| 0,0 → 1,40 |
| /* |
| * Copyright (C) 2005 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #ifndef __BIOS_H__ |
| #define __BIOS_H__ |
| #include <arch/types.h> |
| #define BIOS_EBDA_PTR 0x40e |
| extern __address ebda; |
| extern void bios_init(void); |
| #endif /* __BIOS_H__ */ |
| /SPARTAN/trunk/arch/ia32/Makefile.inc |
|---|
| 24,6 → 24,7 |
| arch/asm.s \ |
| arch/proc/scheduler.c \ |
| arch/acpi/acpi.c \ |
| arch/bios/bios.c \ |
| arch/smp/ap.S \ |
| arch/smp/apic.c \ |
| arch/smp/mp.c \ |
| /SPARTAN/trunk/arch/ia32/src/ia32.c |
|---|
| 67,6 → 67,7 |
| write_dr0(config.cpu_active - 1); |
| if (config.cpu_active == 1) { |
| bios_init(); |
| i8042_init(); /* a20 bit */ |
| i8259_init(); /* PIC */ |
| i8254_init(); /* hard clock */ |
| /SPARTAN/trunk/arch/ia32/src/bios/bios.c |
|---|
| 0,0 → 1,38 |
| /* |
| * Copyright (C) 2005 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/bios/bios.h> |
| #include <arch/types.h> |
| __address ebda = 0; |
| void bios_init(void) |
| { |
| /* Copy the EBDA out from BIOS Data Area */ |
| ebda = *((__u16 *) BIOS_EBDA_PTR) * 0x10; |
| } |
| /SPARTAN/trunk/arch/ia32/src/smp/mp.c |
|---|
| 46,6 → 46,7 |
| #include <cpu.h> |
| #include <arch/i8259.h> |
| #include <arch/asm.h> |
| #include <arch/bios/bios.h> |
| #include <arch/acpi/madt.h> |
| /* |
| 132,21 → 133,10 |
| /* |
| * First place to search the MP Floating Pointer Structure is the Extended |
| * BIOS Data Area. We have to read EBDA segment address from the BIOS Data |
| * Area. Unfortunatelly, this memory is in page 0, which has intentionally no |
| * mapping. |
| */ |
| frame = frame_alloc(FRAME_KA); |
| map_page_to_frame(frame,0,PAGE_CACHEABLE,0); |
| addr = *((__u16 *) (frame + 0x40e)) * 16; |
| map_page_to_frame(frame,frame,PAGE_CACHEABLE,0); |
| frame_free(frame); |
| /* |
| * EBDA can be undefined. In that case addr would be 0. |
| */ |
| if (addr >= 0x1000) { |
| addr = ebda; |
| if (addr) { |
| cnt = 1024; |
| while (addr = __u32_search(addr,cnt,FS_SIGNATURE)) { |
| if (mp_fs_check((__u8 *) addr)) |
| 155,18 → 145,19 |
| cnt--; |
| } |
| } |
| /* |
| * Second place where the MP Floating Pointer Structure may live is the last |
| * kilobyte of base memory. |
| */ |
| addr = 639*1024; |
| cnt = 1024; |
| while (addr = __u32_search(addr,cnt,FS_SIGNATURE)) { |
| if (mp_fs_check((__u8 *) addr)) |
| goto fs_found; |
| addr++; |
| cnt--; |
| else { |
| /* |
| * Second place where the MP Floating Pointer Structure may live is the last |
| * kilobyte of base memory. |
| */ |
| addr = 639*1024; |
| cnt = 1024; |
| while (addr = __u32_search(addr,cnt,FS_SIGNATURE)) { |
| if (mp_fs_check((__u8 *) addr)) |
| goto fs_found; |
| addr++; |
| cnt--; |
| } |
| } |
| /* |