// MPTable generation (on emulators)
//
-// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
// Copyright (C) 2006 Fabrice Bellard
//
-// 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 "util.h" // dprintf
-#include "memmap.h" // bios_table_cur_addr
#include "config.h" // CONFIG_*
-
-static void putb(u8 **pp, int val)
-{
- u8 *q;
- q = *pp;
- *q++ = val;
- *pp = q;
-}
-
-static void putstr(u8 **pp, const char *str)
-{
- u8 *q;
- q = *pp;
- while (*str)
- *q++ = *str++;
- *pp = q;
-}
-
-static void putle16(u8 **pp, int val)
-{
- u8 *q;
- q = *pp;
- *q++ = val;
- *q++ = val >> 8;
- *pp = q;
-}
-
-static void putle32(u8 **pp, int val)
-{
- u8 *q;
- q = *pp;
- *q++ = val;
- *q++ = val >> 8;
- *q++ = val >> 16;
- *q++ = val >> 24;
- *pp = q;
-}
+#include "mptable.h" // MPTABLE_SIGNATURE
+#include "paravirt.h" // qemu_cfg_irq0_override
+#include "pci.h"
+#include "pci_regs.h"
void
mptable_init(void)
if (! CONFIG_MPTABLE)
return;
- u8 *mp_config_table, *q, *float_pointer_struct;
- int ioapic_id, i, len;
- int mp_config_table_size;
+ dprintf(3, "init MPTable\n");
- int smp_cpus = smp_probe();
- if (smp_cpus <= 1)
- // Building an mptable on uniprocessor machines confuses some OSes.
+ // Config structure in temp area.
+ struct mptable_config_s *config = malloc_tmp(32*1024);
+ if (!config) {
+ warn_noalloc();
return;
-
- bios_table_cur_addr = ALIGN(bios_table_cur_addr, 16);
- mp_config_table = (u8 *)bios_table_cur_addr;
- 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, CONFIG_CPUNAME8); /* OEM id */
- putstr(&q, "0.1 "); /* vendor id */
- putle32(&q, 0); /* OEM table ptr */
- putle16(&q, 0); /* OEM table size */
- putle16(&q, smp_cpus + 18); /* 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);
+ }
+ memset(config, 0, sizeof(*config));
+ config->signature = MPCONFIG_SIGNATURE;
+ config->spec = 4;
+ memcpy(config->oemid, CONFIG_CPUNAME8, sizeof(config->oemid));
+ memcpy(config->productid, "0.1 ", sizeof(config->productid));
+ config->lapic = BUILD_APIC_ADDR;
+
+ // Detect cpu info
+ u32 cpuid_signature, ebx, ecx, cpuid_features;
+ cpuid(1, &cpuid_signature, &ebx, &ecx, &cpuid_features);
+ if (! cpuid_signature) {
+ // Use default values.
+ cpuid_signature = 0x600;
+ cpuid_features = 0x201;
+ }
+ int pkgcpus = 1;
+ if (cpuid_features & (1 << 28)) {
+ /* Only populate the MPS tables with the first logical CPU in
+ each package */
+ pkgcpus = (ebx >> 16) & 0xff;
+ pkgcpus = 1 << (__fls(pkgcpus - 1) + 1); /* round up to power of 2 */
+ }
+ u8 apic_version = readl((u8*)BUILD_APIC_ADDR + 0x30) & 0xff;
+
+ // CPU definitions.
+ struct mpt_cpu *cpus = (void*)&config[1], *cpu = cpus;
+ int i;
+ for (i = 0; i < MaxCountCPUs; i+=pkgcpus) {
+ memset(cpu, 0, sizeof(*cpu));
+ cpu->type = MPT_TYPE_CPU;
+ cpu->apicid = i;
+ cpu->apicver = apic_version;
+ /* cpu flags: enabled, bootstrap cpu */
+ cpu->cpuflag = ((i<CountCPUs) ? 0x01 : 0x00) | ((i==0) ? 0x02 : 0x00);
+ cpu->cpusignature = cpuid_signature;
+ cpu->featureflag = cpuid_features;
+ cpu++;
+ }
+ int entrycount = cpu - cpus;
+
+ // PCI buses
+ struct mpt_bus *buses = (void*)cpu, *bus = buses;
+ int lastbus = -1;
+ struct pci_device *pci;
+ foreachpci(pci) {
+ int curbus = pci_bdf_to_bus(pci->bdf);
+ if (curbus == lastbus)
+ continue;
+ lastbus = curbus;
+ memset(bus, 0, sizeof(*bus));
+ bus->type = MPT_TYPE_BUS;
+ bus->busid = curbus;
+ memcpy(bus->bustype, "PCI ", sizeof(bus->bustype));
+ bus++;
}
/* isa bus */
- putb(&q, 1); /* entry type = bus */
- putb(&q, 0); /* bus ID */
- putstr(&q, "ISA ");
+ int isabusid;
+ memset(bus, 0, sizeof(*bus));
+ bus->type = MPT_TYPE_BUS;
+ isabusid = bus->busid = lastbus + 1;
+ memcpy(bus->bustype, "ISA ", sizeof(bus->bustype));
+ bus++;
+ entrycount += bus - buses;
/* 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 */
+ u8 ioapic_id = CountCPUs;
+ struct mpt_ioapic *ioapic = (void*)bus;
+ memset(ioapic, 0, sizeof(*ioapic));
+ ioapic->type = MPT_TYPE_IOAPIC;
+ ioapic->apicid = ioapic_id;
+ ioapic->apicver = 0x11;
+ ioapic->flags = 1; // enable
+ ioapic->apicaddr = BUILD_IOAPIC_ADDR;
+ entrycount++;
/* 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 */
+ struct mpt_intsrc *intsrcs = (void*)&ioapic[1], *intsrc = intsrcs;
+ int dev = -1;
+ unsigned short mask = 0, pinmask = 0;
+
+ foreachpci(pci) {
+ u16 bdf = pci->bdf;
+ int pin = pci_config_readb(bdf, PCI_INTERRUPT_PIN);
+ int irq = pci_config_readb(bdf, PCI_INTERRUPT_LINE);
+ if (pin == 0)
+ continue;
+ if (dev != pci_bdf_to_busdev(bdf)) {
+ dev = pci_bdf_to_busdev(bdf);
+ pinmask = 0;
+ }
+ if (pinmask & (1 << pin)) /* pin was seen already */
+ continue;
+ pinmask |= (1 << pin);
+ mask |= (1 << irq);
+ memset(intsrc, 0, sizeof(*intsrc));
+ intsrc->type = MPT_TYPE_INTSRC;
+ intsrc->irqtype = 0; /* INT */
+ intsrc->irqflag = 1; /* active high */
+ intsrc->srcbus = pci_bdf_to_bus(bdf); /* PCI bus */
+ intsrc->srcbusirq = (pci_bdf_to_dev(bdf) << 2) | (pin - 1);
+ intsrc->dstapic = ioapic_id;
+ intsrc->dstirq = irq;
+ intsrc++;
}
- /* patch length */
- len = q - mp_config_table;
- mp_config_table[4] = len;
- mp_config_table[5] = len >> 8;
-
- mp_config_table[7] = -checksum(mp_config_table, q - mp_config_table);
- mp_config_table_size = q - mp_config_table;
+ for (i = 0; i < 16; i++) {
+ memset(intsrc, 0, sizeof(*intsrc));
+ if (mask & (1 << i))
+ continue;
+ intsrc->type = MPT_TYPE_INTSRC;
+ intsrc->irqtype = 0; /* INT */
+ intsrc->irqflag = 0; /* conform to bus spec */
+ intsrc->srcbus = isabusid; /* ISA bus */
+ intsrc->srcbusirq = i;
+ intsrc->dstapic = ioapic_id;
+ intsrc->dstirq = i;
+ if (qemu_cfg_irq0_override()) {
+ /* Destination 2 is covered by irq0->inti2 override (i ==
+ 0). Source IRQ 2 is unused */
+ if (i == 0)
+ intsrc->dstirq = 2;
+ else if (i == 2)
+ intsrc--;
+ }
+ intsrc++;
+ }
- bios_table_cur_addr += mp_config_table_size;
+ /* Local interrupt assignment */
+ intsrc->type = MPT_TYPE_LOCAL_INT;
+ intsrc->irqtype = 3; /* ExtINT */
+ intsrc->irqflag = 0; /* PO, EL default */
+ intsrc->srcbus = isabusid; /* ISA */
+ intsrc->srcbusirq = 0;
+ intsrc->dstapic = 0; /* BSP == APIC #0 */
+ intsrc->dstirq = 0; /* LINTIN0 */
+ intsrc++;
+
+ intsrc->type = MPT_TYPE_LOCAL_INT;
+ intsrc->irqtype = 1; /* NMI */
+ intsrc->irqflag = 0; /* PO, EL default */
+ intsrc->srcbus = isabusid; /* ISA */
+ intsrc->srcbusirq = 0;
+ intsrc->dstapic = 0xff; /* to all local APICs */
+ intsrc->dstirq = 1; /* LINTIN1 */
+ intsrc++;
+ entrycount += intsrc - intsrcs;
+
+ // Finalize config structure.
+ int length = (void*)intsrc - (void*)config;
+ config->entrycount = entrycount;
+ config->length = length;
+ config->checksum -= checksum(config, length);
+
+ // Allocate final memory locations. (In theory the config
+ // structure can go in high memory, but Linux kernels before
+ // v2.6.30 crash with that.)
+ struct mptable_config_s *finalconfig = malloc_fseg(length);
+ struct mptable_floating_s *floating = malloc_fseg(sizeof(*floating));
+ if (!finalconfig || !floating) {
+ warn_noalloc();
+ free(config);
+ free(finalconfig);
+ free(floating);
+ return;
+ }
+ memcpy(finalconfig, config, length);
+ free(config);
/* floating pointer structure */
- bios_table_cur_addr = ALIGN(bios_table_cur_addr, 16);
- float_pointer_struct = (u8 *)bios_table_cur_addr;
- q = float_pointer_struct;
- putstr(&q, "_MP_");
- /* pointer to MP config table */
- putle32(&q, (unsigned long)mp_config_table);
-
- 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] = -checksum(float_pointer_struct
- , q - float_pointer_struct);
- bios_table_cur_addr += (q - float_pointer_struct);
- dprintf(1, "MP table addr=0x%08lx MPC table addr=0x%08lx size=0x%x\n",
- (unsigned long)float_pointer_struct,
- (unsigned long)mp_config_table,
- mp_config_table_size);
+ memset(floating, 0, sizeof(*floating));
+ floating->signature = MPTABLE_SIGNATURE;
+ floating->physaddr = (u32)finalconfig;
+ floating->length = 1;
+ floating->spec_rev = 4;
+ floating->checksum -= checksum(floating, sizeof(*floating));
+
+ dprintf(1, "MP table addr=%p MPC table addr=%p size=%d\n",
+ floating, finalconfig, length);
}
projects / seabios.git / blobdiff