// 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 "ioport.h" // PORT_*
#include "config.h" // CONFIG_*
#include "cmos.h" // CMOS_*
#include "util.h" // memset
#include "biosvar.h" // struct bios_data_area_s
-#include "ata.h" // hard_drive_setup
#include "disk.h" // floppy_drive_setup
#include "memmap.h" // add_e820
#include "pic.h" // pic_setup
#include "pci.h" // create_pirtable
#include "acpi.h" // acpi_bios_init
#include "bregs.h" // struct bregs
-
-#define bda ((struct bios_data_area_s *)MAKE_FARPTR(SEG_BDA, 0))
-#define ebda ((struct extended_bios_data_area_s *)MAKE_FARPTR(SEG_EBDA, 0))
+#include "mptable.h" // mptable_init
+#include "boot.h" // IPL
void
__set_irq(int vector, void *loc)
{
- SET_BDA(ivecs[vector].seg, SEG_BIOS);
- SET_BDA(ivecs[vector].offset, (u32)loc - BUILD_BIOS_ADDR);
+ SET_IVT(vector, SEG_BIOS, (u32)loc - BUILD_BIOS_ADDR);
}
#define set_irq(vector, func) do { \
} while (0)
static void
-init_bda()
+init_ivt()
{
- dprintf(3, "init bda\n");
- memset(bda, 0, sizeof(*bda));
+ dprintf(3, "init ivt\n");
- SET_BDA(mem_size_kb, BASE_MEM_IN_K);
-
- // Initialize all vectors to a dummy handler.
+ // Initialize all vectors to the default handler.
int i;
for (i=0; i<256; i++)
- set_irq(i, dummy_iret_handler);
+ set_irq(i, entry_iret_official);
// Initialize all hw vectors to a default hw handler.
for (i=0x08; i<=0x0f; i++)
- set_irq(i, entry_hwirq);
+ set_irq(i, entry_hwpic1);
for (i=0x70; i<=0x77; i++)
- set_irq(i, entry_hwirq);
+ set_irq(i, entry_hwpic2);
// Initialize software handlers.
+ set_irq(0x02, entry_02);
set_irq(0x10, entry_10);
set_irq(0x11, entry_11);
set_irq(0x12, entry_12);
- set_irq(0x13, entry_13);
+ set_irq(0x13, entry_13_official);
set_irq(0x14, entry_14);
set_irq(0x15, entry_15);
set_irq(0x16, entry_16);
set_irq(0x17, entry_17);
set_irq(0x18, entry_18);
- set_irq(0x19, entry_19);
+ set_irq(0x19, entry_19_official);
set_irq(0x1a, entry_1a);
- set_irq(0x1c, entry_1c);
set_irq(0x40, entry_40);
// set vector 0x79 to zero
// this is used by 'gardian angel' protection system
- SET_BDA(ivecs[0x79].seg, 0);
- SET_BDA(ivecs[0x79].offset, 0);
+ SET_IVT(0x79, 0, 0);
__set_irq(0x1E, &diskette_param_table2);
}
static void
-init_ebda()
+init_bda()
{
+ dprintf(3, "init bda\n");
+
+ struct bios_data_area_s *bda = MAKE_FLATPTR(SEG_BDA, 0);
+ memset(bda, 0, sizeof(*bda));
+
+ int esize = EBDA_SIZE_START;
+ SET_BDA(mem_size_kb, 640 - esize);
+ u16 eseg = EBDA_SEGMENT_START;
+ SET_BDA(ebda_seg, eseg);
+
+ struct extended_bios_data_area_s *ebda = get_ebda_ptr();
memset(ebda, 0, sizeof(*ebda));
- ebda->size = EBDA_SIZE;
- SET_BDA(ebda_seg, SEG_EBDA);
- SET_BDA(ivecs[0x41].seg, SEG_EBDA);
- SET_BDA(ivecs[0x41].offset
- , offsetof(struct extended_bios_data_area_s, fdpt[0]));
- SET_BDA(ivecs[0x46].seg, SEG_EBDA);
- SET_BDA(ivecs[0x41].offset
- , offsetof(struct extended_bios_data_area_s, fdpt[1]));
+ ebda->size = esize;
+ SET_IVT(0x41, eseg, offsetof(struct extended_bios_data_area_s, fdpt[0]));
+ SET_IVT(0x46, eseg, offsetof(struct extended_bios_data_area_s, fdpt[1]));
}
static void
{
dprintf(3, "Find memory size\n");
if (CONFIG_COREBOOT) {
- coreboot_fill_map();
+ coreboot_setup();
} else {
// On emulators, get memory size from nvram.
u32 rs = ((inb_cmos(CMOS_MEM_EXTMEM2_LOW) << 16)
rs = (((inb_cmos(CMOS_MEM_EXTMEM_LOW) << 10)
| (inb_cmos(CMOS_MEM_EXTMEM_HIGH) << 18))
+ 1 * 1024 * 1024);
- SET_EBDA(ram_size, rs);
+ RamSize = rs;
add_e820(0, rs, E820_RAM);
// Check for memory over 4Gig
u64 high = ((inb_cmos(CMOS_MEM_HIGHMEM_LOW) << 16)
| (inb_cmos(CMOS_MEM_HIGHMEM_MID) << 24)
| ((u64)inb_cmos(CMOS_MEM_HIGHMEM_HIGH) << 32));
- SET_EBDA(ram_size_over4G, high);
+ RamSizeOver4G = high;
add_e820(0x100000000ull, high, E820_RAM);
/* reserve 256KB BIOS area at the end of 4 GB */
add_e820(0xa0000, 0x50000, E820_HOLE);
// Mark known areas as reserved.
- add_e820((u32)MAKE_FARPTR(SEG_EBDA, 0), EBDA_SIZE * 1024, E820_RESERVED);
+ u16 ebda_seg = get_ebda_seg();
+ add_e820((u32)MAKE_FLATPTR(ebda_seg, 0), GET_EBDA2(ebda_seg, size) * 1024
+ , E820_RESERVED);
add_e820(BUILD_BIOS_ADDR, BUILD_BIOS_SIZE, E820_RESERVED);
- dprintf(1, "ram_size=0x%08x\n", GET_EBDA(ram_size));
+ if (CONFIG_KVM)
+ // 4 pages before the bios, 3 pages for vmx tss pages, the
+ // other page for EPT real mode pagetable
+ add_e820(0xfffbc000, 4*4096, E820_RESERVED);
+
+ dprintf(1, "Ram Size=0x%08x\n", RamSize);
}
static void
// XXX - not supported on coreboot yet.
return;
- smm_init();
-
create_pirtable();
mptable_init();
acpi_bios_init();
}
-static void
-init_boot_vectors()
-{
- if (! CONFIG_BOOT)
- return;
- dprintf(3, "init boot device ordering\n");
-
- // Floppy drive
- struct ipl_entry_s *ip = &ebda->ipl.table[0];
- ip->type = IPL_TYPE_FLOPPY;
- ip++;
-
- // First HDD
- ip->type = IPL_TYPE_HARDDISK;
- ip++;
-
- // CDROM
- if (CONFIG_CDROM_BOOT) {
- ip->type = IPL_TYPE_CDROM;
- ip++;
- }
-
- ebda->ipl.count = ip - ebda->ipl.table;
- ebda->ipl.sequence = 0xffff;
- if (CONFIG_COREBOOT) {
- // XXX - hardcode defaults for coreboot.
- ebda->ipl.bootorder = 0x00000231;
- ebda->ipl.checkfloppysig = 1;
- } else {
- // On emulators, get boot order from nvram.
- ebda->ipl.bootorder = (inb_cmos(CMOS_BIOS_BOOTFLAG2)
- | ((inb_cmos(CMOS_BIOS_BOOTFLAG1) & 0xf0) << 4));
- if (!(inb_cmos(CMOS_BIOS_BOOTFLAG1) & 1))
- ebda->ipl.checkfloppysig = 1;
- }
-}
-
// Main setup code.
static void
post()
{
+ init_ivt();
init_bda();
- init_ebda();
pic_setup();
timer_setup();
mathcp_setup();
- pci_bus_setup();
smp_probe_setup();
memmap_setup();
ram_probe();
+ mtrr_setup();
+ pnp_setup();
vga_setup();
kbd_setup();
mouse_setup();
pci_bios_setup();
+ smm_init();
+
init_bios_tables();
memmap_finalize();
+ boot_setup();
+
floppy_drive_setup();
hard_drive_setup();
- init_boot_vectors();
-
optionrom_setup();
}
-// Reset DMA controller
-static void
-init_dma()
-{
- // first reset the DMA controllers
- outb(0, PORT_DMA1_MASTER_CLEAR);
- outb(0, PORT_DMA2_MASTER_CLEAR);
-
- // then initialize the DMA controllers
- outb(0xc0, PORT_DMA2_MODE_REG);
- outb(0x00, PORT_DMA2_MASK_REG);
-}
-
-// Check if the machine was setup with a special restart vector.
-static void
-check_restart_status()
-{
- // Get and then clear CMOS shutdown status.
- u8 status = inb_cmos(CMOS_RESET_CODE);
- outb_cmos(0, CMOS_RESET_CODE);
-
- if (status == 0x00 || status == 0x09 || status >= 0x0d)
- // Normal post
- return;
-
- if (status != 0x05) {
- BX_PANIC("Unimplemented shutdown status: %02x\n", status);
- return;
- }
-
- // XXX - this is supposed to jump without changing any memory -
- // but the stack has been altered by the time the code gets here.
- eoi_pic2();
- struct bregs br;
- memset(&br, 0, sizeof(br));
- br.cs = GET_BDA(jump_cs_ip) >> 16;
- br.ip = GET_BDA(jump_cs_ip);
- call16(&br);
-}
-
// 32-bit entry point.
void VISIBLE32
_start()
{
init_dma();
- check_restart_status();
debug_serial_setup();
dprintf(1, "Start bios\n");
// Perform main setup code.
post();
- // Present the user with a bootup menu.
- interactive_bootmenu();
+ // Run BCVs
+ boot_prep();
// Setup bios checksum.
- extern char bios_checksum;
- bios_checksum = -checksum((u8*)BUILD_BIOS_ADDR, BUILD_BIOS_SIZE - 1);
+ BiosChecksum = -checksum((u8*)BUILD_BIOS_ADDR, BUILD_BIOS_SIZE - 1);
// Prep for boot process.
make_bios_readonly();
memset(&br, 0, sizeof(br));
call16_int(0x19, &br);
}
-
-// Ughh - some older gcc compilers have a bug which causes VISIBLE32
-// functions to not be exported as a global variable - force _start
-// to be global here.
-asm(".global _start");
projects / seabios.git / blobdiff