- mp_config_table = bios_data + 0xcc00;
- q = mp_config_table;
- putstr(&q, "PCMP"); /* "PCMP signature */
- putle16(&q, 0); /* table length (patched later) */
- putb(&q, 4); /* spec rev */
- putb(&q, 0); /* checksum (patched later) */
- putstr(&q, "QEMUCPU "); /* OEM id */
- putstr(&q, "0.1 "); /* vendor id */
- putle32(&q, 0); /* OEM table ptr */
- putle16(&q, 0); /* OEM table size */
- putle16(&q, 20); /* entry count */
- putle32(&q, 0xfee00000); /* local APIC addr */
- putle16(&q, 0); /* ext table length */
- putb(&q, 0); /* ext table checksum */
- putb(&q, 0); /* reserved */
-
- for(i = 0; i < smp_cpus; i++) {
- putb(&q, 0); /* entry type = processor */
- putb(&q, i); /* APIC id */
- putb(&q, 0x11); /* local APIC version number */
- if (i == 0)
- putb(&q, 3); /* cpu flags: enabled, bootstrap cpu */
- else
- putb(&q, 1); /* cpu flags: enabled */
- putb(&q, 0); /* cpu signature */
- putb(&q, 6);
- putb(&q, 0);
- putb(&q, 0);
- putle16(&q, 0x201); /* feature flags */
- putle16(&q, 0);
-
- putle16(&q, 0); /* reserved */
- putle16(&q, 0);
- putle16(&q, 0);
- putle16(&q, 0);
- }
-
- /* isa bus */
- putb(&q, 1); /* entry type = bus */
- putb(&q, 0); /* bus ID */
- putstr(&q, "ISA ");
-
- /* ioapic */
- ioapic_id = smp_cpus;
- putb(&q, 2); /* entry type = I/O APIC */
- putb(&q, ioapic_id); /* apic ID */
- putb(&q, 0x11); /* I/O APIC version number */
- putb(&q, 1); /* enable */
- putle32(&q, 0xfec00000); /* I/O APIC addr */
-
- /* irqs */
- for(i = 0; i < 16; i++) {
- putb(&q, 3); /* entry type = I/O interrupt */
- putb(&q, 0); /* interrupt type = vectored interrupt */
- putb(&q, 0); /* flags: po=0, el=0 */
- putb(&q, 0);
- putb(&q, 0); /* source bus ID = ISA */
- putb(&q, i); /* source bus IRQ */
- putb(&q, ioapic_id); /* dest I/O APIC ID */
- putb(&q, i); /* dest I/O APIC interrupt in */
- }
- /* patch length */
- len = q - mp_config_table;
- mp_config_table[4] = len;
- mp_config_table[5] = len >> 8;
-
- mp_config_table[7] = -mpf_checksum(mp_config_table, q - mp_config_table);
-
- /* align to 16 */
- offset = q - bios_data;
- offset = (offset + 15) & ~15;
- float_pointer_struct = bios_data + offset;
-
- /* floating pointer structure */
- q = float_pointer_struct;
- putstr(&q, "_MP_");
- /* pointer to MP config table */
- putle32(&q, mp_config_table - bios_data + 0x000f0000);
-
- putb(&q, 1); /* length in 16 byte units */
- putb(&q, 4); /* MP spec revision */
- putb(&q, 0); /* checksum (patched later) */
- putb(&q, 0); /* MP feature byte 1 */
-
- putb(&q, 0);
- putb(&q, 0);
- putb(&q, 0);
- putb(&q, 0);
- float_pointer_struct[10] =
- -mpf_checksum(float_pointer_struct, q - float_pointer_struct);
+ /* kernel command line */
+ pstrcpy(cmdline_addr, 4096, kernel_cmdline);
+
+ if (protocol >= 0x202) {
+ stl_p(header+0x228, cmdline_addr-phys_ram_base);
+ } else {
+ stw_p(header+0x20, 0xA33F);
+ stw_p(header+0x22, cmdline_addr-real_addr);
+ }
+
+ /* loader type */
+ /* High nybble = B reserved for Qemu; low nybble is revision number.
+ If this code is substantially changed, you may want to consider
+ incrementing the revision. */
+ if (protocol >= 0x200)
+ header[0x210] = 0xB0;
+
+ /* heap */
+ if (protocol >= 0x201) {
+ header[0x211] |= 0x80; /* CAN_USE_HEAP */
+ stw_p(header+0x224, cmdline_addr-real_addr-0x200);
+ }
+
+ /* load initrd */
+ if (initrd_filename) {
+ if (protocol < 0x200) {
+ fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
+ exit(1);
+ }
+
+ fi = fopen(initrd_filename, "rb");
+ if (!fi) {
+ fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
+ initrd_filename);
+ exit(1);
+ }
+
+ initrd_size = get_file_size(fi);
+ initrd_addr = phys_ram_base + ((initrd_max-initrd_size) & ~4095);
+
+ fprintf(stderr, "qemu: loading initrd (%#x bytes) at %#zx\n",
+ initrd_size, initrd_addr-phys_ram_base);
+
+ if (fread(initrd_addr, 1, initrd_size, fi) != initrd_size) {
+ fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
+ initrd_filename);
+ exit(1);
+ }
+ fclose(fi);
+
+ stl_p(header+0x218, initrd_addr-phys_ram_base);
+ stl_p(header+0x21c, initrd_size);
+ }
+
+ /* store the finalized header and load the rest of the kernel */
+ memcpy(real_addr, header, 1024);
+
+ setup_size = header[0x1f1];
+ if (setup_size == 0)
+ setup_size = 4;
+
+ setup_size = (setup_size+1)*512;
+ kernel_size -= setup_size; /* Size of protected-mode code */
+
+ if (fread(real_addr+1024, 1, setup_size-1024, f) != setup_size-1024 ||
+ fread(prot_addr, 1, kernel_size, f) != kernel_size) {
+ fprintf(stderr, "qemu: read error on kernel '%s'\n",
+ kernel_filename);
+ exit(1);
+ }
+ fclose(f);
+
+ /* generate bootsector to set up the initial register state */
+ real_seg = (real_addr-phys_ram_base) >> 4;
+ seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
+ seg[1] = real_seg+0x20; /* CS */
+ memset(gpr, 0, sizeof gpr);
+ gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
+
+ generate_bootsect(gpr, seg, 0);