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/*
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* QEMU PC System Emulator
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*
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* Copyright (c) 2003-2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h" |
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#include "pc.h" |
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#include "apic.h" |
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#include "fdc.h" |
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#include "pci.h" |
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#include "vmware_vga.h" |
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#include "monitor.h" |
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#include "fw_cfg.h" |
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#include "hpet_emul.h" |
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#include "smbios.h" |
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#include "loader.h" |
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#include "elf.h" |
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#include "multiboot.h" |
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#include "mc146818rtc.h" |
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#include "msix.h" |
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#include "sysbus.h" |
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#include "sysemu.h" |
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/* output Bochs bios info messages */
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//#define DEBUG_BIOS
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/* debug PC/ISA interrupts */
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//#define DEBUG_IRQ
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#ifdef DEBUG_IRQ
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#define DPRINTF(fmt, ...) \
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do { printf("CPUIRQ: " fmt , ## __VA_ARGS__); } while (0) |
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#else
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#define DPRINTF(fmt, ...)
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#endif
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|
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#define BIOS_FILENAME "bios.bin" |
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#define PC_MAX_BIOS_SIZE (4 * 1024 * 1024) |
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/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
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#define ACPI_DATA_SIZE 0x10000 |
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#define BIOS_CFG_IOPORT 0x510 |
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#define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0) |
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#define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1) |
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#define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2) |
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#define FW_CFG_E820_TABLE (FW_CFG_ARCH_LOCAL + 3) |
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#define FW_CFG_HPET (FW_CFG_ARCH_LOCAL + 4) |
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|
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#define MSI_ADDR_BASE 0xfee00000 |
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|
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#define E820_NR_ENTRIES 16 |
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|
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struct e820_entry {
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uint64_t address; |
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uint64_t length; |
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uint32_t type; |
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}; |
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struct e820_table {
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uint32_t count; |
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struct e820_entry entry[E820_NR_ENTRIES];
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}; |
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static struct e820_table e820_table; |
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|
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void isa_irq_handler(void *opaque, int n, int level) |
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{ |
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IsaIrqState *isa = (IsaIrqState *)opaque; |
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DPRINTF("isa_irqs: %s irq %d\n", level? "raise" : "lower", n); |
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if (n < 16) { |
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qemu_set_irq(isa->i8259[n], level); |
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} |
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if (isa->ioapic)
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qemu_set_irq(isa->ioapic[n], level); |
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}; |
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|
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static void ioport80_write(void *opaque, uint32_t addr, uint32_t data) |
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{ |
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} |
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|
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/* MSDOS compatibility mode FPU exception support */
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static qemu_irq ferr_irq;
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|
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void pc_register_ferr_irq(qemu_irq irq)
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{ |
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ferr_irq = irq; |
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} |
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|
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/* XXX: add IGNNE support */
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void cpu_set_ferr(CPUX86State *s)
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{ |
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qemu_irq_raise(ferr_irq); |
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} |
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|
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static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data) |
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{ |
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qemu_irq_lower(ferr_irq); |
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} |
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|
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/* TSC handling */
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uint64_t cpu_get_tsc(CPUX86State *env) |
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{ |
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return cpu_get_ticks();
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} |
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/* SMM support */
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|
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static cpu_set_smm_t smm_set;
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static void *smm_arg; |
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void cpu_smm_register(cpu_set_smm_t callback, void *arg) |
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{ |
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assert(smm_set == NULL);
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assert(smm_arg == NULL);
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smm_set = callback; |
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smm_arg = arg; |
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} |
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void cpu_smm_update(CPUState *env)
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{ |
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if (smm_set && smm_arg && env == first_cpu)
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smm_set(!!(env->hflags & HF_SMM_MASK), smm_arg); |
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} |
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/* IRQ handling */
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int cpu_get_pic_interrupt(CPUState *env)
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{ |
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int intno;
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intno = apic_get_interrupt(env->apic_state); |
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if (intno >= 0) { |
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/* set irq request if a PIC irq is still pending */
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/* XXX: improve that */
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pic_update_irq(isa_pic); |
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return intno;
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} |
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/* read the irq from the PIC */
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if (!apic_accept_pic_intr(env->apic_state)) {
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return -1; |
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} |
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intno = pic_read_irq(isa_pic); |
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return intno;
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} |
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static void pic_irq_request(void *opaque, int irq, int level) |
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{ |
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CPUState *env = first_cpu; |
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DPRINTF("pic_irqs: %s irq %d\n", level? "raise" : "lower", irq); |
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if (env->apic_state) {
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while (env) {
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if (apic_accept_pic_intr(env->apic_state)) {
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apic_deliver_pic_intr(env->apic_state, level); |
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} |
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env = env->next_cpu; |
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} |
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} else {
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if (level)
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cpu_interrupt(env, CPU_INTERRUPT_HARD); |
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else
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cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); |
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} |
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} |
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/* PC cmos mappings */
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#define REG_EQUIPMENT_BYTE 0x14 |
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static int cmos_get_fd_drive_type(int fd0) |
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{ |
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int val;
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switch (fd0) {
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case 0: |
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/* 1.44 Mb 3"5 drive */
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val = 4;
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break;
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case 1: |
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/* 2.88 Mb 3"5 drive */
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val = 5;
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break;
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case 2: |
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/* 1.2 Mb 5"5 drive */
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val = 2;
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break;
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default:
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val = 0;
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break;
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} |
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return val;
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} |
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static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd, |
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ISADevice *s) |
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{ |
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int cylinders, heads, sectors;
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bdrv_get_geometry_hint(hd, &cylinders, &heads, §ors); |
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rtc_set_memory(s, type_ofs, 47);
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rtc_set_memory(s, info_ofs, cylinders); |
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rtc_set_memory(s, info_ofs + 1, cylinders >> 8); |
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rtc_set_memory(s, info_ofs + 2, heads);
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rtc_set_memory(s, info_ofs + 3, 0xff); |
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rtc_set_memory(s, info_ofs + 4, 0xff); |
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rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3)); |
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rtc_set_memory(s, info_ofs + 6, cylinders);
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rtc_set_memory(s, info_ofs + 7, cylinders >> 8); |
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rtc_set_memory(s, info_ofs + 8, sectors);
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} |
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/* convert boot_device letter to something recognizable by the bios */
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static int boot_device2nibble(char boot_device) |
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{ |
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switch(boot_device) {
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case 'a': |
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case 'b': |
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return 0x01; /* floppy boot */ |
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case 'c': |
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return 0x02; /* hard drive boot */ |
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case 'd': |
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return 0x03; /* CD-ROM boot */ |
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case 'n': |
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return 0x04; /* Network boot */ |
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} |
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return 0; |
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} |
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static int set_boot_dev(ISADevice *s, const char *boot_device, int fd_bootchk) |
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{ |
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#define PC_MAX_BOOT_DEVICES 3 |
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int nbds, bds[3] = { 0, }; |
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int i;
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nbds = strlen(boot_device); |
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if (nbds > PC_MAX_BOOT_DEVICES) {
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error_report("Too many boot devices for PC");
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return(1); |
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} |
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for (i = 0; i < nbds; i++) { |
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bds[i] = boot_device2nibble(boot_device[i]); |
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if (bds[i] == 0) { |
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error_report("Invalid boot device for PC: '%c'",
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boot_device[i]); |
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return(1); |
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} |
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} |
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rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); |
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rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1)); |
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return(0); |
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} |
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static int pc_boot_set(void *opaque, const char *boot_device) |
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{ |
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return set_boot_dev(opaque, boot_device, 0); |
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} |
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|
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/* hd_table must contain 4 block drivers */
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void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
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const char *boot_device, DriveInfo **hd_table, |
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FDCtrl *floppy_controller, ISADevice *s) |
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{ |
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int val;
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int fd0, fd1, nb;
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int i;
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/* various important CMOS locations needed by PC/Bochs bios */
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/* memory size */
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val = 640; /* base memory in K */ |
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rtc_set_memory(s, 0x15, val);
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rtc_set_memory(s, 0x16, val >> 8); |
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val = (ram_size / 1024) - 1024; |
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if (val > 65535) |
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val = 65535;
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rtc_set_memory(s, 0x17, val);
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rtc_set_memory(s, 0x18, val >> 8); |
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rtc_set_memory(s, 0x30, val);
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rtc_set_memory(s, 0x31, val >> 8); |
301 |
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if (above_4g_mem_size) {
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rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16); |
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rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24); |
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rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32); |
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} |
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|
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if (ram_size > (16 * 1024 * 1024)) |
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val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536); |
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else
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val = 0;
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if (val > 65535) |
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val = 65535;
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rtc_set_memory(s, 0x34, val);
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rtc_set_memory(s, 0x35, val >> 8); |
316 |
|
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/* set the number of CPU */
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rtc_set_memory(s, 0x5f, smp_cpus - 1); |
319 |
|
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/* set boot devices, and disable floppy signature check if requested */
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if (set_boot_dev(s, boot_device, fd_bootchk)) {
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exit(1);
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} |
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/* floppy type */
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fd0 = fdctrl_get_drive_type(floppy_controller, 0);
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fd1 = fdctrl_get_drive_type(floppy_controller, 1);
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val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
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rtc_set_memory(s, 0x10, val);
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val = 0;
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nb = 0;
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if (fd0 < 3) |
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nb++; |
337 |
if (fd1 < 3) |
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nb++; |
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switch (nb) {
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case 0: |
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break;
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case 1: |
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val |= 0x01; /* 1 drive, ready for boot */ |
344 |
break;
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case 2: |
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val |= 0x41; /* 2 drives, ready for boot */ |
347 |
break;
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} |
349 |
val |= 0x02; /* FPU is there */ |
350 |
val |= 0x04; /* PS/2 mouse installed */ |
351 |
rtc_set_memory(s, REG_EQUIPMENT_BYTE, val); |
352 |
|
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/* hard drives */
|
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|
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rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0)); |
356 |
if (hd_table[0]) |
357 |
cmos_init_hd(0x19, 0x1b, hd_table[0]->bdrv, s); |
358 |
if (hd_table[1]) |
359 |
cmos_init_hd(0x1a, 0x24, hd_table[1]->bdrv, s); |
360 |
|
361 |
val = 0;
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362 |
for (i = 0; i < 4; i++) { |
363 |
if (hd_table[i]) {
|
364 |
int cylinders, heads, sectors, translation;
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/* NOTE: bdrv_get_geometry_hint() returns the physical
|
366 |
geometry. It is always such that: 1 <= sects <= 63, 1
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367 |
<= heads <= 16, 1 <= cylinders <= 16383. The BIOS
|
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geometry can be different if a translation is done. */
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translation = bdrv_get_translation_hint(hd_table[i]->bdrv); |
370 |
if (translation == BIOS_ATA_TRANSLATION_AUTO) {
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bdrv_get_geometry_hint(hd_table[i]->bdrv, &cylinders, &heads, §ors); |
372 |
if (cylinders <= 1024 && heads <= 16 && sectors <= 63) { |
373 |
/* No translation. */
|
374 |
translation = 0;
|
375 |
} else {
|
376 |
/* LBA translation. */
|
377 |
translation = 1;
|
378 |
} |
379 |
} else {
|
380 |
translation--; |
381 |
} |
382 |
val |= translation << (i * 2);
|
383 |
} |
384 |
} |
385 |
rtc_set_memory(s, 0x39, val);
|
386 |
} |
387 |
|
388 |
static void handle_a20_line_change(void *opaque, int irq, int level) |
389 |
{ |
390 |
CPUState *cpu = opaque; |
391 |
|
392 |
/* XXX: send to all CPUs ? */
|
393 |
cpu_x86_set_a20(cpu, level); |
394 |
} |
395 |
|
396 |
/***********************************************************/
|
397 |
/* Bochs BIOS debug ports */
|
398 |
|
399 |
static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val) |
400 |
{ |
401 |
static const char shutdown_str[8] = "Shutdown"; |
402 |
static int shutdown_index = 0; |
403 |
|
404 |
switch(addr) {
|
405 |
/* Bochs BIOS messages */
|
406 |
case 0x400: |
407 |
case 0x401: |
408 |
fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
|
409 |
exit(1);
|
410 |
case 0x402: |
411 |
case 0x403: |
412 |
#ifdef DEBUG_BIOS
|
413 |
fprintf(stderr, "%c", val);
|
414 |
#endif
|
415 |
break;
|
416 |
case 0x8900: |
417 |
/* same as Bochs power off */
|
418 |
if (val == shutdown_str[shutdown_index]) {
|
419 |
shutdown_index++; |
420 |
if (shutdown_index == 8) { |
421 |
shutdown_index = 0;
|
422 |
qemu_system_shutdown_request(); |
423 |
} |
424 |
} else {
|
425 |
shutdown_index = 0;
|
426 |
} |
427 |
break;
|
428 |
|
429 |
/* LGPL'ed VGA BIOS messages */
|
430 |
case 0x501: |
431 |
case 0x502: |
432 |
fprintf(stderr, "VGA BIOS panic, line %d\n", val);
|
433 |
exit(1);
|
434 |
case 0x500: |
435 |
case 0x503: |
436 |
#ifdef DEBUG_BIOS
|
437 |
fprintf(stderr, "%c", val);
|
438 |
#endif
|
439 |
break;
|
440 |
} |
441 |
} |
442 |
|
443 |
int e820_add_entry(uint64_t address, uint64_t length, uint32_t type)
|
444 |
{ |
445 |
int index = e820_table.count;
|
446 |
struct e820_entry *entry;
|
447 |
|
448 |
if (index >= E820_NR_ENTRIES)
|
449 |
return -EBUSY;
|
450 |
entry = &e820_table.entry[index]; |
451 |
|
452 |
entry->address = address; |
453 |
entry->length = length; |
454 |
entry->type = type; |
455 |
|
456 |
e820_table.count++; |
457 |
return e820_table.count;
|
458 |
} |
459 |
|
460 |
static void *bochs_bios_init(void) |
461 |
{ |
462 |
void *fw_cfg;
|
463 |
uint8_t *smbios_table; |
464 |
size_t smbios_len; |
465 |
uint64_t *numa_fw_cfg; |
466 |
int i, j;
|
467 |
|
468 |
register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL); |
469 |
register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL); |
470 |
register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL); |
471 |
register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL); |
472 |
register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL); |
473 |
|
474 |
register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL); |
475 |
register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL); |
476 |
register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL); |
477 |
register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL); |
478 |
|
479 |
fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0); |
480 |
|
481 |
fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
|
482 |
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); |
483 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables, |
484 |
acpi_tables_len); |
485 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_IRQ0_OVERRIDE, &irq0override, 1);
|
486 |
|
487 |
smbios_table = smbios_get_table(&smbios_len); |
488 |
if (smbios_table)
|
489 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES, |
490 |
smbios_table, smbios_len); |
491 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, (uint8_t *)&e820_table, |
492 |
sizeof(struct e820_table)); |
493 |
|
494 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_HPET, (uint8_t *)&hpet_cfg, |
495 |
sizeof(struct hpet_fw_config)); |
496 |
/* allocate memory for the NUMA channel: one (64bit) word for the number
|
497 |
* of nodes, one word for each VCPU->node and one word for each node to
|
498 |
* hold the amount of memory.
|
499 |
*/
|
500 |
numa_fw_cfg = qemu_mallocz((1 + smp_cpus + nb_numa_nodes) * 8); |
501 |
numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes);
|
502 |
for (i = 0; i < smp_cpus; i++) { |
503 |
for (j = 0; j < nb_numa_nodes; j++) { |
504 |
if (node_cpumask[j] & (1 << i)) { |
505 |
numa_fw_cfg[i + 1] = cpu_to_le64(j);
|
506 |
break;
|
507 |
} |
508 |
} |
509 |
} |
510 |
for (i = 0; i < nb_numa_nodes; i++) { |
511 |
numa_fw_cfg[smp_cpus + 1 + i] = cpu_to_le64(node_mem[i]);
|
512 |
} |
513 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, (uint8_t *)numa_fw_cfg, |
514 |
(1 + smp_cpus + nb_numa_nodes) * 8); |
515 |
|
516 |
return fw_cfg;
|
517 |
} |
518 |
|
519 |
static long get_file_size(FILE *f) |
520 |
{ |
521 |
long where, size;
|
522 |
|
523 |
/* XXX: on Unix systems, using fstat() probably makes more sense */
|
524 |
|
525 |
where = ftell(f); |
526 |
fseek(f, 0, SEEK_END);
|
527 |
size = ftell(f); |
528 |
fseek(f, where, SEEK_SET); |
529 |
|
530 |
return size;
|
531 |
} |
532 |
|
533 |
static void load_linux(void *fw_cfg, |
534 |
const char *kernel_filename, |
535 |
const char *initrd_filename, |
536 |
const char *kernel_cmdline, |
537 |
target_phys_addr_t max_ram_size) |
538 |
{ |
539 |
uint16_t protocol; |
540 |
int setup_size, kernel_size, initrd_size = 0, cmdline_size; |
541 |
uint32_t initrd_max; |
542 |
uint8_t header[8192], *setup, *kernel, *initrd_data;
|
543 |
target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
|
544 |
FILE *f; |
545 |
char *vmode;
|
546 |
|
547 |
/* Align to 16 bytes as a paranoia measure */
|
548 |
cmdline_size = (strlen(kernel_cmdline)+16) & ~15; |
549 |
|
550 |
/* load the kernel header */
|
551 |
f = fopen(kernel_filename, "rb");
|
552 |
if (!f || !(kernel_size = get_file_size(f)) ||
|
553 |
fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) !=
|
554 |
MIN(ARRAY_SIZE(header), kernel_size)) { |
555 |
fprintf(stderr, "qemu: could not load kernel '%s': %s\n",
|
556 |
kernel_filename, strerror(errno)); |
557 |
exit(1);
|
558 |
} |
559 |
|
560 |
/* kernel protocol version */
|
561 |
#if 0
|
562 |
fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
|
563 |
#endif
|
564 |
if (ldl_p(header+0x202) == 0x53726448) |
565 |
protocol = lduw_p(header+0x206);
|
566 |
else {
|
567 |
/* This looks like a multiboot kernel. If it is, let's stop
|
568 |
treating it like a Linux kernel. */
|
569 |
if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename,
|
570 |
kernel_cmdline, kernel_size, header)) |
571 |
return;
|
572 |
protocol = 0;
|
573 |
} |
574 |
|
575 |
if (protocol < 0x200 || !(header[0x211] & 0x01)) { |
576 |
/* Low kernel */
|
577 |
real_addr = 0x90000;
|
578 |
cmdline_addr = 0x9a000 - cmdline_size;
|
579 |
prot_addr = 0x10000;
|
580 |
} else if (protocol < 0x202) { |
581 |
/* High but ancient kernel */
|
582 |
real_addr = 0x90000;
|
583 |
cmdline_addr = 0x9a000 - cmdline_size;
|
584 |
prot_addr = 0x100000;
|
585 |
} else {
|
586 |
/* High and recent kernel */
|
587 |
real_addr = 0x10000;
|
588 |
cmdline_addr = 0x20000;
|
589 |
prot_addr = 0x100000;
|
590 |
} |
591 |
|
592 |
#if 0
|
593 |
fprintf(stderr,
|
594 |
"qemu: real_addr = 0x" TARGET_FMT_plx "\n"
|
595 |
"qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n"
|
596 |
"qemu: prot_addr = 0x" TARGET_FMT_plx "\n",
|
597 |
real_addr,
|
598 |
cmdline_addr,
|
599 |
prot_addr);
|
600 |
#endif
|
601 |
|
602 |
/* highest address for loading the initrd */
|
603 |
if (protocol >= 0x203) |
604 |
initrd_max = ldl_p(header+0x22c);
|
605 |
else
|
606 |
initrd_max = 0x37ffffff;
|
607 |
|
608 |
if (initrd_max >= max_ram_size-ACPI_DATA_SIZE)
|
609 |
initrd_max = max_ram_size-ACPI_DATA_SIZE-1;
|
610 |
|
611 |
fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr); |
612 |
fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline)+1);
|
613 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA, |
614 |
(uint8_t*)strdup(kernel_cmdline), |
615 |
strlen(kernel_cmdline)+1);
|
616 |
|
617 |
if (protocol >= 0x202) { |
618 |
stl_p(header+0x228, cmdline_addr);
|
619 |
} else {
|
620 |
stw_p(header+0x20, 0xA33F); |
621 |
stw_p(header+0x22, cmdline_addr-real_addr);
|
622 |
} |
623 |
|
624 |
/* handle vga= parameter */
|
625 |
vmode = strstr(kernel_cmdline, "vga=");
|
626 |
if (vmode) {
|
627 |
unsigned int video_mode; |
628 |
/* skip "vga=" */
|
629 |
vmode += 4;
|
630 |
if (!strncmp(vmode, "normal", 6)) { |
631 |
video_mode = 0xffff;
|
632 |
} else if (!strncmp(vmode, "ext", 3)) { |
633 |
video_mode = 0xfffe;
|
634 |
} else if (!strncmp(vmode, "ask", 3)) { |
635 |
video_mode = 0xfffd;
|
636 |
} else {
|
637 |
video_mode = strtol(vmode, NULL, 0); |
638 |
} |
639 |
stw_p(header+0x1fa, video_mode);
|
640 |
} |
641 |
|
642 |
/* loader type */
|
643 |
/* High nybble = B reserved for Qemu; low nybble is revision number.
|
644 |
If this code is substantially changed, you may want to consider
|
645 |
incrementing the revision. */
|
646 |
if (protocol >= 0x200) |
647 |
header[0x210] = 0xB0; |
648 |
|
649 |
/* heap */
|
650 |
if (protocol >= 0x201) { |
651 |
header[0x211] |= 0x80; /* CAN_USE_HEAP */ |
652 |
stw_p(header+0x224, cmdline_addr-real_addr-0x200); |
653 |
} |
654 |
|
655 |
/* load initrd */
|
656 |
if (initrd_filename) {
|
657 |
if (protocol < 0x200) { |
658 |
fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
|
659 |
exit(1);
|
660 |
} |
661 |
|
662 |
initrd_size = get_image_size(initrd_filename); |
663 |
if (initrd_size < 0) { |
664 |
fprintf(stderr, "qemu: error reading initrd %s\n",
|
665 |
initrd_filename); |
666 |
exit(1);
|
667 |
} |
668 |
|
669 |
initrd_addr = (initrd_max-initrd_size) & ~4095;
|
670 |
|
671 |
initrd_data = qemu_malloc(initrd_size); |
672 |
load_image(initrd_filename, initrd_data); |
673 |
|
674 |
fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr); |
675 |
fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size); |
676 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size); |
677 |
|
678 |
stl_p(header+0x218, initrd_addr);
|
679 |
stl_p(header+0x21c, initrd_size);
|
680 |
} |
681 |
|
682 |
/* load kernel and setup */
|
683 |
setup_size = header[0x1f1];
|
684 |
if (setup_size == 0) |
685 |
setup_size = 4;
|
686 |
setup_size = (setup_size+1)*512; |
687 |
kernel_size -= setup_size; |
688 |
|
689 |
setup = qemu_malloc(setup_size); |
690 |
kernel = qemu_malloc(kernel_size); |
691 |
fseek(f, 0, SEEK_SET);
|
692 |
if (fread(setup, 1, setup_size, f) != setup_size) { |
693 |
fprintf(stderr, "fread() failed\n");
|
694 |
exit(1);
|
695 |
} |
696 |
if (fread(kernel, 1, kernel_size, f) != kernel_size) { |
697 |
fprintf(stderr, "fread() failed\n");
|
698 |
exit(1);
|
699 |
} |
700 |
fclose(f); |
701 |
memcpy(setup, header, MIN(sizeof(header), setup_size));
|
702 |
|
703 |
fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr); |
704 |
fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size); |
705 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size); |
706 |
|
707 |
fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr); |
708 |
fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size); |
709 |
fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size); |
710 |
|
711 |
option_rom[nb_option_roms] = "linuxboot.bin";
|
712 |
nb_option_roms++; |
713 |
} |
714 |
|
715 |
#define NE2000_NB_MAX 6 |
716 |
|
717 |
static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, |
718 |
0x280, 0x380 }; |
719 |
static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; |
720 |
|
721 |
static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; |
722 |
static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 }; |
723 |
|
724 |
void pc_audio_init (PCIBus *pci_bus, qemu_irq *pic)
|
725 |
{ |
726 |
struct soundhw *c;
|
727 |
|
728 |
for (c = soundhw; c->name; ++c) {
|
729 |
if (c->enabled) {
|
730 |
if (c->isa) {
|
731 |
c->init.init_isa(pic); |
732 |
} else {
|
733 |
if (pci_bus) {
|
734 |
c->init.init_pci(pci_bus); |
735 |
} |
736 |
} |
737 |
} |
738 |
} |
739 |
} |
740 |
|
741 |
void pc_init_ne2k_isa(NICInfo *nd)
|
742 |
{ |
743 |
static int nb_ne2k = 0; |
744 |
|
745 |
if (nb_ne2k == NE2000_NB_MAX)
|
746 |
return;
|
747 |
isa_ne2000_init(ne2000_io[nb_ne2k], |
748 |
ne2000_irq[nb_ne2k], nd); |
749 |
nb_ne2k++; |
750 |
} |
751 |
|
752 |
int cpu_is_bsp(CPUState *env)
|
753 |
{ |
754 |
/* We hard-wire the BSP to the first CPU. */
|
755 |
return env->cpu_index == 0; |
756 |
} |
757 |
|
758 |
DeviceState *cpu_get_current_apic(void)
|
759 |
{ |
760 |
if (cpu_single_env) {
|
761 |
return cpu_single_env->apic_state;
|
762 |
} else {
|
763 |
return NULL; |
764 |
} |
765 |
} |
766 |
|
767 |
static DeviceState *apic_init(void *env, uint8_t apic_id) |
768 |
{ |
769 |
DeviceState *dev; |
770 |
SysBusDevice *d; |
771 |
static int apic_mapped; |
772 |
|
773 |
dev = qdev_create(NULL, "apic"); |
774 |
qdev_prop_set_uint8(dev, "id", apic_id);
|
775 |
qdev_prop_set_ptr(dev, "cpu_env", env);
|
776 |
qdev_init_nofail(dev); |
777 |
d = sysbus_from_qdev(dev); |
778 |
|
779 |
/* XXX: mapping more APICs at the same memory location */
|
780 |
if (apic_mapped == 0) { |
781 |
/* NOTE: the APIC is directly connected to the CPU - it is not
|
782 |
on the global memory bus. */
|
783 |
/* XXX: what if the base changes? */
|
784 |
sysbus_mmio_map(d, 0, MSI_ADDR_BASE);
|
785 |
apic_mapped = 1;
|
786 |
} |
787 |
|
788 |
msix_supported = 1;
|
789 |
|
790 |
return dev;
|
791 |
} |
792 |
|
793 |
/* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
|
794 |
BIOS will read it and start S3 resume at POST Entry */
|
795 |
void pc_cmos_set_s3_resume(void *opaque, int irq, int level) |
796 |
{ |
797 |
ISADevice *s = opaque; |
798 |
|
799 |
if (level) {
|
800 |
rtc_set_memory(s, 0xF, 0xFE); |
801 |
} |
802 |
} |
803 |
|
804 |
void pc_acpi_smi_interrupt(void *opaque, int irq, int level) |
805 |
{ |
806 |
CPUState *s = opaque; |
807 |
|
808 |
if (level) {
|
809 |
cpu_interrupt(s, CPU_INTERRUPT_SMI); |
810 |
} |
811 |
} |
812 |
|
813 |
static void pc_cpu_reset(void *opaque) |
814 |
{ |
815 |
CPUState *env = opaque; |
816 |
|
817 |
cpu_reset(env); |
818 |
env->halted = !cpu_is_bsp(env); |
819 |
} |
820 |
|
821 |
static CPUState *pc_new_cpu(const char *cpu_model) |
822 |
{ |
823 |
CPUState *env; |
824 |
|
825 |
env = cpu_init(cpu_model); |
826 |
if (!env) {
|
827 |
fprintf(stderr, "Unable to find x86 CPU definition\n");
|
828 |
exit(1);
|
829 |
} |
830 |
if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) { |
831 |
env->cpuid_apic_id = env->cpu_index; |
832 |
env->apic_state = apic_init(env, env->cpuid_apic_id); |
833 |
} |
834 |
qemu_register_reset(pc_cpu_reset, env); |
835 |
pc_cpu_reset(env); |
836 |
return env;
|
837 |
} |
838 |
|
839 |
void pc_cpus_init(const char *cpu_model) |
840 |
{ |
841 |
int i;
|
842 |
|
843 |
/* init CPUs */
|
844 |
if (cpu_model == NULL) { |
845 |
#ifdef TARGET_X86_64
|
846 |
cpu_model = "qemu64";
|
847 |
#else
|
848 |
cpu_model = "qemu32";
|
849 |
#endif
|
850 |
} |
851 |
|
852 |
for(i = 0; i < smp_cpus; i++) { |
853 |
pc_new_cpu(cpu_model); |
854 |
} |
855 |
} |
856 |
|
857 |
void pc_memory_init(ram_addr_t ram_size,
|
858 |
const char *kernel_filename, |
859 |
const char *kernel_cmdline, |
860 |
const char *initrd_filename, |
861 |
ram_addr_t *below_4g_mem_size_p, |
862 |
ram_addr_t *above_4g_mem_size_p) |
863 |
{ |
864 |
char *filename;
|
865 |
int ret, linux_boot, i;
|
866 |
ram_addr_t ram_addr, bios_offset, option_rom_offset; |
867 |
ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
|
868 |
int bios_size, isa_bios_size;
|
869 |
void *fw_cfg;
|
870 |
|
871 |
if (ram_size >= 0xe0000000 ) { |
872 |
above_4g_mem_size = ram_size - 0xe0000000;
|
873 |
below_4g_mem_size = 0xe0000000;
|
874 |
} else {
|
875 |
below_4g_mem_size = ram_size; |
876 |
} |
877 |
*above_4g_mem_size_p = above_4g_mem_size; |
878 |
*below_4g_mem_size_p = below_4g_mem_size; |
879 |
|
880 |
linux_boot = (kernel_filename != NULL);
|
881 |
|
882 |
/* allocate RAM */
|
883 |
ram_addr = qemu_ram_alloc(below_4g_mem_size); |
884 |
cpu_register_physical_memory(0, 0xa0000, ram_addr); |
885 |
cpu_register_physical_memory(0x100000,
|
886 |
below_4g_mem_size - 0x100000,
|
887 |
ram_addr + 0x100000);
|
888 |
|
889 |
/* above 4giga memory allocation */
|
890 |
if (above_4g_mem_size > 0) { |
891 |
#if TARGET_PHYS_ADDR_BITS == 32 |
892 |
hw_error("To much RAM for 32-bit physical address");
|
893 |
#else
|
894 |
ram_addr = qemu_ram_alloc(above_4g_mem_size); |
895 |
cpu_register_physical_memory(0x100000000ULL,
|
896 |
above_4g_mem_size, |
897 |
ram_addr); |
898 |
#endif
|
899 |
} |
900 |
|
901 |
|
902 |
/* BIOS load */
|
903 |
if (bios_name == NULL) |
904 |
bios_name = BIOS_FILENAME; |
905 |
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
906 |
if (filename) {
|
907 |
bios_size = get_image_size(filename); |
908 |
} else {
|
909 |
bios_size = -1;
|
910 |
} |
911 |
if (bios_size <= 0 || |
912 |
(bios_size % 65536) != 0) { |
913 |
goto bios_error;
|
914 |
} |
915 |
bios_offset = qemu_ram_alloc(bios_size); |
916 |
ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size)); |
917 |
if (ret != 0) { |
918 |
bios_error:
|
919 |
fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name);
|
920 |
exit(1);
|
921 |
} |
922 |
if (filename) {
|
923 |
qemu_free(filename); |
924 |
} |
925 |
/* map the last 128KB of the BIOS in ISA space */
|
926 |
isa_bios_size = bios_size; |
927 |
if (isa_bios_size > (128 * 1024)) |
928 |
isa_bios_size = 128 * 1024; |
929 |
cpu_register_physical_memory(0x100000 - isa_bios_size,
|
930 |
isa_bios_size, |
931 |
(bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM); |
932 |
|
933 |
option_rom_offset = qemu_ram_alloc(PC_ROM_SIZE); |
934 |
cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset); |
935 |
|
936 |
/* map all the bios at the top of memory */
|
937 |
cpu_register_physical_memory((uint32_t)(-bios_size), |
938 |
bios_size, bios_offset | IO_MEM_ROM); |
939 |
|
940 |
fw_cfg = bochs_bios_init(); |
941 |
rom_set_fw(fw_cfg); |
942 |
|
943 |
if (linux_boot) {
|
944 |
load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size); |
945 |
} |
946 |
|
947 |
for (i = 0; i < nb_option_roms; i++) { |
948 |
rom_add_option(option_rom[i]); |
949 |
} |
950 |
} |
951 |
|
952 |
qemu_irq *pc_allocate_cpu_irq(void)
|
953 |
{ |
954 |
return qemu_allocate_irqs(pic_irq_request, NULL, 1); |
955 |
} |
956 |
|
957 |
void pc_vga_init(PCIBus *pci_bus)
|
958 |
{ |
959 |
if (cirrus_vga_enabled) {
|
960 |
if (pci_bus) {
|
961 |
pci_cirrus_vga_init(pci_bus); |
962 |
} else {
|
963 |
isa_cirrus_vga_init(); |
964 |
} |
965 |
} else if (vmsvga_enabled) { |
966 |
if (pci_bus)
|
967 |
pci_vmsvga_init(pci_bus); |
968 |
else
|
969 |
fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
|
970 |
} else if (std_vga_enabled) { |
971 |
if (pci_bus) {
|
972 |
pci_vga_init(pci_bus, 0, 0); |
973 |
} else {
|
974 |
isa_vga_init(); |
975 |
} |
976 |
} |
977 |
} |
978 |
|
979 |
static void cpu_request_exit(void *opaque, int irq, int level) |
980 |
{ |
981 |
CPUState *env = cpu_single_env; |
982 |
|
983 |
if (env && level) {
|
984 |
cpu_exit(env); |
985 |
} |
986 |
} |
987 |
|
988 |
void pc_basic_device_init(qemu_irq *isa_irq,
|
989 |
FDCtrl **floppy_controller, |
990 |
ISADevice **rtc_state) |
991 |
{ |
992 |
int i;
|
993 |
DriveInfo *fd[MAX_FD]; |
994 |
PITState *pit; |
995 |
qemu_irq rtc_irq = NULL;
|
996 |
qemu_irq *a20_line; |
997 |
ISADevice *i8042; |
998 |
qemu_irq *cpu_exit_irq; |
999 |
|
1000 |
register_ioport_write(0x80, 1, 1, ioport80_write, NULL); |
1001 |
|
1002 |
register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL); |
1003 |
|
1004 |
if (!no_hpet) {
|
1005 |
DeviceState *hpet = sysbus_create_simple("hpet", HPET_BASE, NULL); |
1006 |
|
1007 |
for (i = 0; i < 24; i++) { |
1008 |
sysbus_connect_irq(sysbus_from_qdev(hpet), i, isa_irq[i]); |
1009 |
} |
1010 |
rtc_irq = qdev_get_gpio_in(hpet, 0);
|
1011 |
} |
1012 |
*rtc_state = rtc_init(2000, rtc_irq);
|
1013 |
|
1014 |
qemu_register_boot_set(pc_boot_set, *rtc_state); |
1015 |
|
1016 |
pit = pit_init(0x40, isa_reserve_irq(0)); |
1017 |
pcspk_init(pit); |
1018 |
|
1019 |
for(i = 0; i < MAX_SERIAL_PORTS; i++) { |
1020 |
if (serial_hds[i]) {
|
1021 |
serial_isa_init(i, serial_hds[i]); |
1022 |
} |
1023 |
} |
1024 |
|
1025 |
for(i = 0; i < MAX_PARALLEL_PORTS; i++) { |
1026 |
if (parallel_hds[i]) {
|
1027 |
parallel_init(i, parallel_hds[i]); |
1028 |
} |
1029 |
} |
1030 |
|
1031 |
a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 1);
|
1032 |
i8042 = isa_create_simple("i8042");
|
1033 |
i8042_setup_a20_line(i8042, a20_line); |
1034 |
vmmouse_init(i8042); |
1035 |
|
1036 |
cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); |
1037 |
DMA_init(0, cpu_exit_irq);
|
1038 |
|
1039 |
for(i = 0; i < MAX_FD; i++) { |
1040 |
fd[i] = drive_get(IF_FLOPPY, 0, i);
|
1041 |
} |
1042 |
*floppy_controller = fdctrl_init_isa(fd); |
1043 |
} |
1044 |
|
1045 |
void pc_pci_device_init(PCIBus *pci_bus)
|
1046 |
{ |
1047 |
int max_bus;
|
1048 |
int bus;
|
1049 |
|
1050 |
max_bus = drive_get_max_bus(IF_SCSI); |
1051 |
for (bus = 0; bus <= max_bus; bus++) { |
1052 |
pci_create_simple(pci_bus, -1, "lsi53c895a"); |
1053 |
} |
1054 |
} |