diff options
Diffstat (limited to 'qemu/roms/seabios/src/misc.c')
| -rw-r--r-- | qemu/roms/seabios/src/misc.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/qemu/roms/seabios/src/misc.c b/qemu/roms/seabios/src/misc.c deleted file mode 100644 index f02237c36..000000000 --- a/qemu/roms/seabios/src/misc.c +++ /dev/null @@ -1,203 +0,0 @@ -// Code for misc 16bit handlers and variables. -// -// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net> -// Copyright (C) 2002 MandrakeSoft S.A. -// -// This file may be distributed under the terms of the GNU LGPLv3 license. - -#include "biosvar.h" // GET_BDA -#include "bregs.h" // struct bregs -#include "hw/pic.h" // enable_hwirq -#include "output.h" // debug_enter -#include "stacks.h" // call16_int -#include "string.h" // memset - -#define PORT_MATH_CLEAR 0x00f0 - -// Indicator if POST phase has been started (and if it has completed). -int HaveRunPost VARFSEG; - -int -in_post(void) -{ - return GET_GLOBAL(HaveRunPost) == 1; -} - - -/**************************************************************** - * Misc 16bit ISRs - ****************************************************************/ - -// INT 12h Memory Size Service Entry Point -void VISIBLE16 -handle_12(struct bregs *regs) -{ - debug_enter(regs, DEBUG_HDL_12); - regs->ax = GET_BDA(mem_size_kb); -} - -// INT 11h Equipment List Service Entry Point -void VISIBLE16 -handle_11(struct bregs *regs) -{ - debug_enter(regs, DEBUG_HDL_11); - regs->ax = GET_BDA(equipment_list_flags); -} - -// INT 05h Print Screen Service Entry Point -void VISIBLE16 -handle_05(struct bregs *regs) -{ - debug_enter(regs, DEBUG_HDL_05); -} - -// INT 10h Video Support Service Entry Point -void VISIBLE16 -handle_10(struct bregs *regs) -{ - debug_enter(regs, DEBUG_HDL_10); - // don't do anything, since the VGA BIOS handles int10h requests -} - -// NMI handler -void VISIBLE16 -handle_02(void) -{ - debug_isr(DEBUG_ISR_02); -} - -void -mathcp_setup(void) -{ - dprintf(3, "math cp init\n"); - // 80x87 coprocessor installed - set_equipment_flags(0x02, 0x02); - enable_hwirq(13, FUNC16(entry_75)); -} - -// INT 75 - IRQ13 - MATH COPROCESSOR EXCEPTION -void VISIBLE16 -handle_75(void) -{ - debug_isr(DEBUG_ISR_75); - - // clear irq13 - outb(0, PORT_MATH_CLEAR); - // clear interrupt - pic_eoi2(); - // legacy nmi call - struct bregs br; - memset(&br, 0, sizeof(br)); - br.flags = F_IF; - call16_int(0x02, &br); -} - - -/**************************************************************** - * BIOS_CONFIG_TABLE - ****************************************************************/ - -// DMA channel 3 used by hard disk BIOS -#define CBT_F1_DMA3USED (1<<7) -// 2nd interrupt controller (8259) installed -#define CBT_F1_2NDPIC (1<<6) -// Real-Time Clock installed -#define CBT_F1_RTC (1<<5) -// INT 15/AH=4Fh called upon INT 09h -#define CBT_F1_INT154F (1<<4) -// wait for external event (INT 15/AH=41h) supported -#define CBT_F1_WAITEXT (1<<3) -// extended BIOS area allocated (usually at top of RAM) -#define CBT_F1_EBDA (1<<2) -// bus is Micro Channel instead of ISA -#define CBT_F1_MCA (1<<1) -// system has dual bus (Micro Channel + ISA) -#define CBT_F1_MCAISA (1<<0) - -// INT 16/AH=09h (keyboard functionality) supported -#define CBT_F2_INT1609 (1<<6) - -struct bios_config_table_s BIOS_CONFIG_TABLE VARFSEGFIXED(0xe6f5) = { - .size = sizeof(BIOS_CONFIG_TABLE) - 2, - .model = BUILD_MODEL_ID, - .submodel = BUILD_SUBMODEL_ID, - .biosrev = BUILD_BIOS_REVISION, - .feature1 = ( - CBT_F1_2NDPIC | CBT_F1_RTC | CBT_F1_EBDA - | (CONFIG_KBD_CALL_INT15_4F ? CBT_F1_INT154F : 0)), - .feature2 = CBT_F2_INT1609, - .feature3 = 0, - .feature4 = 0, - .feature5 = 0, -}; - - -/**************************************************************** - * GDT and IDT tables - ****************************************************************/ - -// Real mode IDT descriptor -struct descloc_s rmode_IDT_info VARFSEG = { - .length = sizeof(struct rmode_IVT) - 1, - .addr = (u32)MAKE_FLATPTR(SEG_IVT, 0), -}; - -// Dummy IDT that forces a machine shutdown if an irq happens in -// protected mode. -u8 dummy_IDT VARFSEG; - -// Protected mode IDT descriptor -struct descloc_s pmode_IDT_info VARFSEG = { - .length = sizeof(dummy_IDT) - 1, - .addr = (u32)&dummy_IDT, -}; - -// GDT -u64 rombios32_gdt[] VARFSEG __aligned(8) = { - // First entry can't be used. - 0x0000000000000000LL, - // 32 bit flat code segment (SEG32_MODE32_CS) - GDT_GRANLIMIT(0xffffffff) | GDT_CODE | GDT_B, - // 32 bit flat data segment (SEG32_MODE32_DS) - GDT_GRANLIMIT(0xffffffff) | GDT_DATA | GDT_B, - // 16 bit code segment base=0xf0000 limit=0xffff (SEG32_MODE16_CS) - GDT_LIMIT(BUILD_BIOS_SIZE-1) | GDT_CODE | GDT_BASE(BUILD_BIOS_ADDR), - // 16 bit data segment base=0x0 limit=0xffff (SEG32_MODE16_DS) - GDT_LIMIT(0x0ffff) | GDT_DATA, - // 16 bit code segment base=0xf0000 limit=0xffffffff (SEG32_MODE16BIG_CS) - GDT_GRANLIMIT(0xffffffff) | GDT_CODE | GDT_BASE(BUILD_BIOS_ADDR), - // 16 bit data segment base=0 limit=0xffffffff (SEG32_MODE16BIG_DS) - GDT_GRANLIMIT(0xffffffff) | GDT_DATA, -}; - -// GDT descriptor -struct descloc_s rombios32_gdt_48 VARFSEG = { - .length = sizeof(rombios32_gdt) - 1, - .addr = (u32)rombios32_gdt, -}; - - -/**************************************************************** - * Misc fixed vars - ****************************************************************/ - -// BIOS build date -char BiosDate[] VARFSEGFIXED(0xfff5) = "06/23/99"; - -u8 BiosModelId VARFSEGFIXED(0xfffe) = BUILD_MODEL_ID; - -u8 BiosChecksum VARFSEGFIXED(0xffff); - -struct floppy_dbt_s diskette_param_table VARFSEGFIXED(0xefc7); - -// Old Fixed Disk Parameter Table (newer tables are in the ebda). -struct fdpt_s OldFDPT VARFSEGFIXED(0xe401); - -// XXX - Baud Rate Generator Table -u8 BaudTable[16] VARFSEGFIXED(0xe729); - -// XXX - Initial Interrupt Vector Offsets Loaded by POST -u8 InitVectors[13] VARFSEGFIXED(0xfef3); - -// XXX - INT 1D - SYSTEM DATA - VIDEO PARAMETER TABLES -u8 VideoParams[88] VARFSEGFIXED(0xf0a4); |