diff options
Diffstat (limited to 'src/arch/i386')
| -rw-r--r-- | src/arch/i386/boot/mpspec.c | 34 | ||||
| -rw-r--r-- | src/arch/i386/include/arch/smp/mpspec.h | 1 |
2 files changed, 35 insertions, 0 deletions
diff --git a/src/arch/i386/boot/mpspec.c b/src/arch/i386/boot/mpspec.c index 57a10ac670..031f326b64 100644 --- a/src/arch/i386/boot/mpspec.c +++ b/src/arch/i386/boot/mpspec.c @@ -323,3 +323,37 @@ void mptable_add_isa_interrupts(struct mp_config_table *mc, unsigned long bus_is smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_EDGE|MP_IRQ_POLARITY_HIGH, bus_isa, 0xe, apicid, 0xe); smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_EDGE|MP_IRQ_POLARITY_HIGH, bus_isa, 0xf, apicid, 0xf); } + +void mptable_write_buses(struct mp_config_table *mc, int *max_pci_bus, int *isa_bus) { + int dummy, i, highest; + char buses[256]; + struct device *dev; + + if (!max_pci_bus) max_pci_bus = &dummy; + if (!isa_bus) isa_bus = &dummy; + + *max_pci_bus = 0; + highest = 0; + memset(buses, 0, sizeof(buses)); + + for (dev = all_devices; dev; dev = dev->next) { + struct bus *bus; + for (bus = dev->link_list; bus; bus = bus->next) { + if (bus->secondary > 255) { + printk(BIOS_ERR, "A bus claims to have a bus ID > 255?!? Aborting"); + return; + } + buses[bus->secondary] = 1; + if (highest < bus->secondary) highest = bus->secondary; + } + } + for (i=0; i <= highest; i++) { + if (buses[i]) { + smp_write_bus(mc, i, "PCI "); + *max_pci_bus = i; + } + } + *isa_bus = *max_pci_bus + 1; + smp_write_bus(mc, *isa_bus, "ISA "); +} + diff --git a/src/arch/i386/include/arch/smp/mpspec.h b/src/arch/i386/include/arch/smp/mpspec.h index 2d5c88f343..9b4a6281b7 100644 --- a/src/arch/i386/include/arch/smp/mpspec.h +++ b/src/arch/i386/include/arch/smp/mpspec.h @@ -274,6 +274,7 @@ void *smp_write_floating_table_physaddr(unsigned long addr, unsigned long write_smp_table(unsigned long addr); void mptable_add_isa_interrupts(struct mp_config_table *mc, unsigned long bus_isa, unsigned long apicid, int external); +void mptable_write_buses(struct mp_config_table *mc, int *max_pci_bus, int *isa_bus); #endif |