On Thursday 11 May 2006 08:57, Prarit Bhargava wrote: > Currently, after booting a system there is no way to tell what hardware > is currently in the system. The current output from sysfs only > indicates what knowledge the kernel has of the system (ie, is limited by > NR_CPUS, etc.). However, during ACPI initialization a lot of data is > output to the console about the precise number of CPUs, lapics, etc. > > Having this information is useful to anyone (or any application) > interested in querying the real system information. Some of this we should get via "lspnp". (But you need PNPACPI and somebody (/me looks around innocently) should fix lspnp to look in /sys/bus/pnp/devices.) But I see your point about things that are often described in static tables, like CPUs and APICs, because those don't show up in the namespace. Len's pmtools package[1] can already extract and decode most of the static tables. Does this (from a 4-CPU Intel Tiger) have some of the information you need? # ./acpidump -b -t APIC | ../madt/madt ACPI: APIC (v001 INTEL SR870BN4 0x01072002 MSFT 0x00010013) @ 0x(nil) ACPI: LSAPIC (acpi_id[0x00] lsapic_id[0xc6] lsapic_eid[0x18] enabled) ACPI: LSAPIC (acpi_id[0x01] lsapic_id[0xc2] lsapic_eid[0x18] enabled) ACPI: LSAPIC (acpi_id[0x02] lsapic_id[0xc4] lsapic_eid[0x18] enabled) ACPI: LSAPIC (acpi_id[0x03] lsapic_id[0xc0] lsapic_eid[0x18] enabled) ACPI: IOSAPIC (id[0x0] global_irq_base[0x0] address[0xfec00000]) ACPI: IOSAPIC (id[0x1] global_irq_base[0x18] address[0xfec10000]) ACPI: IOSAPIC (id[0x2] global_irq_base[0x30] address[0xfec20000]) ACPI: IOSAPIC (id[0x3] global_irq_base[0x48] address[0xfec30000]) ACPI: IOSAPIC (id[0x4] global_irq_base[0x60] address[0xfec40000]) ACPI: IOSAPIC (id[0x5] global_irq_base[0x78] address[0xfec50000]) ACPI: IOSAPIC (id[0x6] global_irq_base[0x90] address[0xfec60000]) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) ACPI: PLAT_INT_SRC (low level type[0x3] id[0x00c6] eid[0x18] iosapic_vector[0x1e] global_irq[0x16] Length 230 OK Checksum OK [1] ftp://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/pmtools-20051111.tar.bz2 - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
