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-rw-r--r--util/x86emu/yabel/biosemu.c386
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diff --git a/util/x86emu/yabel/biosemu.c b/util/x86emu/yabel/biosemu.c
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index 294d81f279..0000000000
--- a/util/x86emu/yabel/biosemu.c
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@@ -1,386 +0,0 @@
-/******************************************************************************
- * Copyright (c) 2004, 2008 IBM Corporation
- * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net>
- * Copyright (c) 2010 coresystems GmbH
- * All rights reserved.
- * This program and the accompanying materials
- * are made available under the terms of the BSD License
- * which accompanies this distribution, and is available at
- * http://www.opensource.org/licenses/bsd-license.php
- *
- * Contributors:
- * IBM Corporation - initial implementation
- *****************************************************************************/
-
-#include <string.h>
-#include <types.h>
-
-#include "debug.h"
-
-#include <x86emu/x86emu.h>
-#include <x86emu/regs.h>
-#include "../x86emu/prim_ops.h"
-
-#include "biosemu.h"
-#include "io.h"
-#include "mem.h"
-#include "interrupt.h"
-#include "device.h"
-#include "pmm.h"
-
-#include <device/device.h>
-#include "compat/rtas.h"
-
-static X86EMU_memFuncs my_mem_funcs = {
- my_rdb, my_rdw, my_rdl,
- my_wrb, my_wrw, my_wrl
-};
-
-static X86EMU_pioFuncs my_pio_funcs = {
- my_inb, my_inw, my_inl,
- my_outb, my_outw, my_outl
-};
-
-/* interrupt function override array (see biosemu.h) */
-yabel_handleIntFunc yabel_intFuncArray[256];
-
-/* main entry into YABEL biosemu, arguments are:
- * *biosmem = pointer to virtual memory
- * biosmem_size = size of the virtual memory
- * *dev = pointer to the device to be initialised
- * rom_addr = address of the OptionROM to be executed, if this is = 0, YABEL
- * will look for an ExpansionROM BAR and use the code from there.
- */
-u32
-biosemu(u8 *biosmem, u32 biosmem_size, struct device * dev, unsigned long rom_addr)
-{
- u8 *rom_image;
- int i = 0;
-#if CONFIG_X86EMU_DEBUG
- debug_flags = 0;
-#if defined(CONFIG_X86EMU_DEBUG_JMP) && CONFIG_X86EMU_DEBUG_JMP
- debug_flags |= DEBUG_JMP;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_TRACE) && CONFIG_X86EMU_DEBUG_TRACE
- debug_flags |= DEBUG_TRACE_X86EMU;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_PNP) && CONFIG_X86EMU_DEBUG_PNP
- debug_flags |= DEBUG_PNP;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_DISK) && CONFIG_X86EMU_DEBUG_DISK
- debug_flags |= DEBUG_DISK;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_PMM) && CONFIG_X86EMU_DEBUG_PMM
- debug_flags |= DEBUG_PMM;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_VBE) && CONFIG_X86EMU_DEBUG_VBE
- debug_flags |= DEBUG_VBE;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_INT10) && CONFIG_X86EMU_DEBUG_INT10
- debug_flags |= DEBUG_PRINT_INT10;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_INTERRUPTS) && CONFIG_X86EMU_DEBUG_INTERRUPTS
- debug_flags |= DEBUG_INTR;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_CHECK_VMEM_ACCESS) && CONFIG_X86EMU_DEBUG_CHECK_VMEM_ACCESS
- debug_flags |= DEBUG_CHECK_VMEM_ACCESS;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_MEM) && CONFIG_X86EMU_DEBUG_MEM
- debug_flags |= DEBUG_MEM;
-#endif
-#if defined(CONFIG_X86EMU_DEBUG_IO) && CONFIG_X86EMU_DEBUG_IO
- debug_flags |= DEBUG_IO;
-#endif
-
-#endif
- if (biosmem_size < MIN_REQUIRED_VMEM_SIZE) {
- printf("Error: Not enough virtual memory: %x, required: %x!\n",
- biosmem_size, MIN_REQUIRED_VMEM_SIZE);
- return -1;
- }
- if (biosemu_dev_init(dev) != 0) {
- printf("Error initializing device!\n");
- return -1;
- }
- if (biosemu_dev_check_exprom(rom_addr) != 0) {
- printf("Error: Device Expansion ROM invalid!\n");
- return -1;
- }
- rom_image = (u8 *) bios_device.img_addr;
- DEBUG_PRINTF("executing rom_image from %p\n", rom_image);
- DEBUG_PRINTF("biosmem at %p\n", biosmem);
-
- DEBUG_PRINTF("Image Size: %d\n", bios_device.img_size);
-
- // in case we jump somewhere unexpected, or execution is finished,
- // fill the biosmem with hlt instructions (0xf4)
- // But we have to be careful: If biosmem is 0x00000000 we're running
- // in the lower 1MB and we must not wipe memory like that.
- if (biosmem) {
- DEBUG_PRINTF("Clearing biosmem\n");
- memset(biosmem, 0xf4, biosmem_size);
- }
-
- X86EMU_setMemBase(biosmem, biosmem_size);
-
- DEBUG_PRINTF("membase set: %08x, size: %08x\n", (int) M.mem_base,
- (int) M.mem_size);
-
- // copy expansion ROM image to segment OPTION_ROM_CODE_SEGMENT
- // NOTE: this sometimes fails, some bytes are 0x00... so we compare
- // after copying and do some retries...
- u8 *mem_img = biosmem + (OPTION_ROM_CODE_SEGMENT << 4);
- u8 copy_count = 0;
- u8 cmp_result = 0;
- do {
-#if 0
- set_ci();
- memcpy(mem_img, rom_image, len);
- clr_ci();
-#else
- // memcpy fails... try copy byte-by-byte with set/clr_ci
- u8 c;
- for (i = 0; i < bios_device.img_size; i++) {
- set_ci();
- c = *(rom_image + i);
- if (c != *(rom_image + i)) {
- clr_ci();
- printf("Copy failed at: %x/%x\n", i,
- bios_device.img_size);
- printf("rom_image(%x): %x, mem_img(%x): %x\n",
- i, *(rom_image + i), i, *(mem_img + i));
- break;
- }
- clr_ci();
- *(mem_img + i) = c;
- }
-#endif
- copy_count++;
- set_ci();
- cmp_result = memcmp(mem_img, rom_image, bios_device.img_size);
- clr_ci();
- }
- while ((copy_count < 5) && (cmp_result != 0));
- if (cmp_result != 0) {
- printf
- ("\nCopying Expansion ROM Image to Memory failed after %d retries! (%x)\n",
- copy_count, cmp_result);
- dump(rom_image, 0x20);
- dump(mem_img, 0x20);
- return 0;
- }
- // setup default Interrupt Vectors
- // some expansion ROMs seem to check for these addresses..
- // each handler is only an IRET (0xCF) instruction
- // ROM BIOS Int 10 Handler F000:F065
- my_wrl(0x10 * 4, 0xf000f065);
- my_wrb(0x000ff065, 0xcf);
- // ROM BIOS Int 11 Handler F000:F84D
- my_wrl(0x11 * 4, 0xf000f84d);
- my_wrb(0x000ff84d, 0xcf);
- // ROM BIOS Int 12 Handler F000:F841
- my_wrl(0x12 * 4, 0xf000f841);
- my_wrb(0x000ff841, 0xcf);
- // ROM BIOS Int 13 Handler F000:EC59
- my_wrl(0x13 * 4, 0xf000ec59);
- my_wrb(0x000fec59, 0xcf);
- // ROM BIOS Int 14 Handler F000:E739
- my_wrl(0x14 * 4, 0xf000e739);
- my_wrb(0x000fe739, 0xcf);
- // ROM BIOS Int 15 Handler F000:F859
- my_wrl(0x15 * 4, 0xf000f859);
- my_wrb(0x000ff859, 0xcf);
- // ROM BIOS Int 16 Handler F000:E82E
- my_wrl(0x16 * 4, 0xf000e82e);
- my_wrb(0x000fe82e, 0xcf);
- // ROM BIOS Int 17 Handler F000:EFD2
- my_wrl(0x17 * 4, 0xf000efd2);
- my_wrb(0x000fefd2, 0xcf);
- // ROM BIOS Int 1A Handler F000:FE6E
- my_wrl(0x1a * 4, 0xf000fe6e);
- my_wrb(0x000ffe6e, 0xcf);
-
- // setup BIOS Data Area (0000:04xx, or 0040:00xx)
- // we currently 0 this area, meaning "we dont have
- // any hardware" :-) no serial/parallel ports, floppys, ...
- memset(biosmem + 0x400, 0x0, 0x100);
-
- // at offset 13h in BDA is the memory size in kbytes
- my_wrw(0x413, biosmem_size / 1024);
- // at offset 0eh in BDA is the segment of the Extended BIOS Data Area
- // see setup further down
- my_wrw(0x40e, INITIAL_EBDA_SEGMENT);
- // TODO: setup BDA Video Data ( offset 49h-66h)
- // e.g. to store video mode, cursor position, ...
- // in int10 (done) handler and VBE Functions
-
- // TODO: setup BDA Fixed Disk Data
- // 74h: Fixed Disk Last Operation Status
- // 75h: Fixed Disk Number of Disk Drives
-
- // TODO: check BDA for further needed data...
-
- //setup Extended BIOS Data Area
- //we currently 0 this area
- memset(biosmem + (INITIAL_EBDA_SEGMENT << 4), 0, INITIAL_EBDA_SIZE);
- // at offset 0h in EBDA is the size of the EBDA in KB
- my_wrw((INITIAL_EBDA_SEGMENT << 4) + 0x0, INITIAL_EBDA_SIZE / 1024);
- //TODO: check for further needed EBDA data...
-
- // setup original ROM BIOS Area (F000:xxxx)
- const char *date = "06/11/99";
- for (i = 0; date[i]; i++)
- my_wrb(0xffff5 + i, date[i]);
- // set up eisa ident string
- const char *ident = "PCI_ISA";
- for (i = 0; ident[i]; i++)
- my_wrb(0xfffd9 + i, ident[i]);
-
- // write system model id for IBM-AT
- // according to "Ralf Browns Interrupt List" Int15 AH=C0 Table 515,
- // model FC is the original AT and also used in all DOSEMU Versions.
- my_wrb(0xFFFFE, 0xfc);
-
- //setup interrupt handler
- X86EMU_intrFuncs intrFuncs[256];
- for (i = 0; i < 256; i++)
- intrFuncs[i] = handleInterrupt;
- X86EMU_setupIntrFuncs(intrFuncs);
- X86EMU_setupPioFuncs(&my_pio_funcs);
- X86EMU_setupMemFuncs(&my_mem_funcs);
-
- //setup PMM struct in BIOS_DATA_SEGMENT, offset 0x0
- u8 pmm_length = pmm_setup(BIOS_DATA_SEGMENT, 0x0);
- if (pmm_length <= 0) {
- printf ("\nYABEL: Warning: PMM Area could not be setup. PMM not available (%x)\n",
- pmm_length);
- return 0;
- } else {
- CHECK_DBG(DEBUG_PMM) {
- /* test the PMM */
- pmm_test();
- /* and clean it again by calling pmm_setup... */
- pmm_length = pmm_setup(BIOS_DATA_SEGMENT, 0x0);
- }
- }
- // setup the CPU
- M.x86.R_AH = bios_device.bus;
- M.x86.R_AL = bios_device.devfn;
- M.x86.R_DX = 0x80;
- M.x86.R_EIP = 3;
- M.x86.R_CS = OPTION_ROM_CODE_SEGMENT;
-
- // Initialize stack and data segment
- M.x86.R_SS = STACK_SEGMENT;
- M.x86.R_SP = STACK_START_OFFSET;
- M.x86.R_DS = DATA_SEGMENT;
-
- // push a HLT instruction and a pointer to it onto the stack
- // any return will pop the pointer and jump to the HLT, thus
- // exiting (more or less) cleanly
- push_word(0xf4f4); // F4=HLT
- push_word(M.x86.R_SS);
- push_word(M.x86.R_SP + 2);
-
- CHECK_DBG(DEBUG_TRACE_X86EMU) {
- X86EMU_trace_on();
-#if 0
- } else {
- M.x86.debug |= DEBUG_SAVE_IP_CS_F;
- M.x86.debug |= DEBUG_DECODE_F;
- M.x86.debug |= DEBUG_DECODE_NOPRINT_F;
-#endif
- }
- CHECK_DBG(DEBUG_JMP) {
- M.x86.debug |= DEBUG_TRACEJMP_F;
- M.x86.debug |= DEBUG_TRACEJMP_REGS_F;
- M.x86.debug |= DEBUG_TRACECALL_F;
- M.x86.debug |= DEBUG_TRACECALL_REGS_F;
- }
-
- DEBUG_PRINTF("Executing Initialization Vector...\n");
- X86EMU_exec();
- DEBUG_PRINTF("done\n");
-
- /* According to the PNP BIOS Spec, Option ROMs should upon exit, return
- * some boot device status in AX (see PNP BIOS Spec Section 3.3
- */
- DEBUG_PRINTF_CS_IP("Option ROM Exit Status: %04x\n", M.x86.R_AX);
-#if defined(CONFIG_X86EMU_DEBUG) && CONFIG_X86EMU_DEBUG
- DEBUG_PRINTF("Exit Status Decode:\n");
- if (M.x86.R_AX & 0x100) { // bit 8
- DEBUG_PRINTF
- (" IPL Device supporting INT 13h Block Device Format:\n");
- switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4
- case 0:
- DEBUG_PRINTF(" No IPL Device attached\n");
- break;
- case 1:
- DEBUG_PRINTF(" IPL Device status unknown\n");
- break;
- case 2:
- DEBUG_PRINTF(" IPL Device attached\n");
- break;
- case 3:
- DEBUG_PRINTF(" IPL Device status RESERVED!!\n");
- break;
- }
- }
- if (M.x86.R_AX & 0x80) { // bit 7
- DEBUG_PRINTF
- (" Output Device supporting INT 10h Character Output:\n");
- switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4
- case 0:
- DEBUG_PRINTF(" No Display Device attached\n");
- break;
- case 1:
- DEBUG_PRINTF(" Display Device status unknown\n");
- break;
- case 2:
- DEBUG_PRINTF(" Display Device attached\n");
- break;
- case 3:
- DEBUG_PRINTF(" Display Device status RESERVED!!\n");
- break;
- }
- }
- if (M.x86.R_AX & 0x40) { // bit 6
- DEBUG_PRINTF
- (" Input Device supporting INT 9h Character Input:\n");
- switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4
- case 0:
- DEBUG_PRINTF(" No Input Device attached\n");
- break;
- case 1:
- DEBUG_PRINTF(" Input Device status unknown\n");
- break;
- case 2:
- DEBUG_PRINTF(" Input Device attached\n");
- break;
- case 3:
- DEBUG_PRINTF(" Input Device status RESERVED!!\n");
- break;
- }
- }
-#endif
- /* Check whether the stack is "clean" i.e. containing the HLT
- * instruction we pushed before executing and pointing to the original
- * stack address... indicating that the initialization probably was
- * successful
- */
- if ((pop_word() == 0xf4f4) && (M.x86.R_SS == STACK_SEGMENT)
- && (M.x86.R_SP == STACK_START_OFFSET)) {
- DEBUG_PRINTF("Stack is clean, initialization successfull!\n");
- } else {
- printf("Stack unclean, initialization probably NOT COMPLETE!\n");
- DEBUG_PRINTF("SS:SP = %04x:%04x, expected: %04x:%04x\n",
- M.x86.R_SS, M.x86.R_SP, STACK_SEGMENT,
- STACK_START_OFFSET);
- }
-
- // TODO: according to the BIOS Boot Spec initializations may be ended using INT18h and setting
- // the status.
- // We need to implement INT18 accordingly, pseudo code is in specsbbs101.pdf page 30
- // (also for Int19)
- return 0;
-}
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