LPIC Level 1 対策: 第6章 - ハードウェアの設定と構成
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BIOS
BIOS/UEFI(Linux BASIC)
IRQ
$ cat /proc/interrupts
CPU0 CPU1
0: 970753 1161089285 IO-APIC-edge timer
1: 1 1 IO-APIC-edge i8042
8: 1 2 IO-APIC-edge rtc
9: 0 0 IO-APIC-level acpi
:
IO Port
Intel 系CPUでは、メモリと周辺機器へのアクセスは別物となっており、周辺機器
へのアクセスは別アドレス体系となっている。
$ cat /proc/ioports
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-0060 : keyboard
:
DMA
$ cat /proc/dma
4: cascade
HDD デバイス
IDE, SCSI/sATA/USB(Linux BASIC)
デバイスの確認
# lspci
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 14h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wrestler [Radeon HD 6310]
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Wrestler HDMI Audio
00:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 14h Processor Root Port
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] (rev 40)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
lspci, lsusb, dmesg
:
# lsusb
Bus 003 Device 001: ID 0000:0000
Bus 003 Device 002: ID 0bda:0158 Realtek Semiconductor Corp. USB 2.0 multicard reader
Bus 001 Device 001: ID 0000:0000
:
# dmesg
Linux version 2.6.18-398.el5.centos.plus (mockbuild@builder17.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-55)) #1 SMP Fri Sep 19 15:57:19 EDT 2014
BIOS-provided physical RAM map:
BIOS-e820: 0000000000010000 - 000000000009d800 (usable)
BIOS-e820: 000000000009d800 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
: