Linux Kernel โ 4 Kernel system configuration๐ง
๋ผ์ฆ๋ฒ ๋ฆฌํ์ด์์ ์ปค๋ ๊ฐ๋ฐ ๋๋ ์ปดํ์ผ์ ํ์ํ ์์คํ ์ ๋ณด๋ฅผ ํ์ธํ๊ธฐ ์ํ ๋ช ๋ น์ด ํ์ธ
์ปค๋ ๋ฒ์ ํ์ธ
root@raspberrypi:/home/jinho# uname -r 6.12.25+rpt-rpi-v8
์ ์ฒด ์ปค๋ ์ ๋ณด (์ปดํ์ผ๋ฌ ํฌํจ)
root@raspberrypi:/home/jinho# uname -a Linux raspberrypi 6.12.25+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.25-1+rpt1 (2025-04-30) aarch64 GNU/Linux
CPU ์ํคํ ์ฒ ๋ฐ ์ ๋ณด
root@raspberrypi:/home/jinho# lscpu
Architecture: aarch64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: ARM
Model name: Cortex-A72
Model: 3
Thread(s) per core: 1
Core(s) per cluster: 4
Socket(s): -
Cluster(s): 1
Stepping: r0p3
CPU(s) scaling MHz: 40%
CPU max MHz: 1500.0000
CPU min MHz: 600.0000
BogoMIPS: 108.00
Flags: fp asimd evtstrm crc32 cpuid
Caches (sum of all):
L1d: 128 KiB (4 instances)
L1i: 192 KiB (4 instances)
L2: 1 MiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-3
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Not affected
Spec store bypass: Vulnerable
Spectre v1: Mitigation; __user pointer sanitization
Spectre v2: Vulnerable
Srbds: Not affected
Tsx async abort: Not affected
์ด์์ฒด์ ์ด๋ฆ ๋ฐ ๋ฒ์
root@raspberrypi:/home/jinho# cat /etc/os-release PRETTY_NAME="Debian GNU/Linux 12 (bookworm)" NAME="Debian GNU/Linux" VERSION_ID="12" VERSION="12 (bookworm)" VERSION_CODENAME=bookworm ID=debian HOME_URL="https://www.debian.org/" SUPPORT_URL="https://www.debian.org/support" BUG_REPORT_URL="https://bugs.debian.org/"
๋๋ฐ์ด์ค๋ณ ์ปค๋ ์ค์ ์ ํ์ํ ๋๋ฐ์ด์ค ํธ๋ฆฌ ํ์ธ
root@raspberrypi:/home/jinho# ls /proc/device-tree/ '#address-cells' chosen fixedregulator_3v3 model regulator-sd-vcc system aliases clk-108M fixedregulator_5v0 name reserved-memory thermal-zones axi clk-27M gpu __overrides__ scb timer cam0_clk clocks interrupt-parent phy serial-number v3dbus cam0_regulator compatible leds pmu '#size-cells' zone_dma cam1_clk cpus memory@0 regulator-cam1 soc cam_dummy_reg emmc2bus memreserve regulator-sd-io-1v8 __symbols__
ํ์ฌ ์ฌ์ฉ ์ค์ธ ๋ชจ๋ ๋ชฉ๋ก
root@raspberrypi:/home/jinho# lsmod Module Size Used by mptcp_diag 12288 0 tcp_diag 12288 0 inet_diag 24576 2 tcp_diag,mptcp_diag rfcomm 53248 4 snd_seq_dummy 12288 0 snd_hrtimer 12288 1 snd_seq 81920 7 snd_seq_dummy snd_seq_device 16384 1 snd_seq cmac 12288 3 algif_hash 12288 1 aes_arm64 12288 3 aes_generic 32768 1 aes_arm64 algif_skcipher 12288 1 af_alg 28672 6 algif_hash,algif_skcipher bnep 24576 2 brcmfmac_wcc 12288 0 brcmfmac 360448 1 brcmfmac_wcc brcmutil 24576 1 brcmfmac hci_uart 49152 0 binfmt_misc 16384 1 btbcm 24576 1 hci_uart bluetooth 614400 33 hci_uart,btbcm,bnep,rfcomm cfg80211 1003520 1 brcmfmac ecdh_generic 16384 2 bluetooth ecc 36864 1 ecdh_generic bcm2835_codec 45056 0 libaes 12288 3 aes_arm64,bluetooth,aes_generic bcm2835_v4l2 40960 0 bcm2835_isp 28672 0 rfkill 32768 6 bluetooth,cfg80211 joydev 24576 0 bcm2835_mmal_vchiq 36864 3 bcm2835_codec,bcm2835_v4l2,bcm2835_isp rpi_hevc_dec 45056 0 vc_sm_cma 28672 2 bcm2835_mmal_vchiq,bcm2835_isp v4l2_mem2mem 45056 2 bcm2835_codec,rpi_hevc_dec videobuf2_dma_contig 20480 3 bcm2835_codec,rpi_hevc_dec,bcm2835_isp raspberrypi_hwmon 12288 0 videobuf2_vmalloc 12288 1 bcm2835_v4l2 videobuf2_memops 12288 2 videobuf2_vmalloc,videobuf2_dma_contig i2c_brcmstb 12288 0 videobuf2_v4l2 32768 5 bcm2835_codec,rpi_hevc_dec,bcm2835_v4l2,v4l2_mem2mem,bcm2835_isp raspberrypi_gpiomem 12288 0 snd_bcm2835 24576 1 videodev 311296 6 bcm2835_codec,rpi_hevc_dec,videobuf2_v4l2,bcm2835_v4l2,v4l2_mem2mem,bcm2835_isp videobuf2_common 73728 9 bcm2835_codec,videobuf2_vmalloc,rpi_hevc_dec,videobuf2_dma_contig,videobuf2_v4l2,bcm2835_v4l2,v4l2_mem2mem,videobuf2_memops,bcm2835_isp mc 61440 7 videodev,bcm2835_codec,rpi_hevc_dec,videobuf2_v4l2,videobuf2_common,v4l2_mem2mem,bcm2835_isp nvmem_rmem 12288 0 i2c_dev 16384 0 ledtrig_pattern 12288 0 fuse 163840 5 dm_mod 143360 0 ip_tables 32768 0 x_tables 49152 1 ip_tables ipv6 569344 52 vc4 389120 13 snd_soc_hdmi_codec 20480 2 v3d 180224 7 snd_soc_core 290816 2 vc4,snd_soc_hdmi_codec snd_compress 20480 1 snd_soc_core drm_shmem_helper 28672 1 v3d gpu_sched 61440 1 v3d snd_pcm_dmaengine 16384 1 snd_soc_core snd_pcm 143360 5 snd_bcm2835,snd_soc_hdmi_codec,snd_compress,snd_soc_core,snd_pcm_dmaengine snd_timer 36864 3 snd_seq,snd_hrtimer,snd_pcm snd 110592 14 snd_seq,snd_seq_device,snd_bcm2835,snd_soc_hdmi_codec,snd_timer,snd_compress,snd_soc_core,snd_pcm drm_display_helper 24576 1 vc4 drm_dma_helper 24576 2 vc4 cec 53248 1 vc4 drm_kms_helper 217088 3 drm_dma_helper,vc4,drm_shmem_helper drm 647168 19 gpu_sched,drm_kms_helper,drm_dma_helper,v3d,vc4,drm_shmem_helper,drm_display_helper drm_panel_orientation_quirks 28672 1 drm backlight 24576 2 drm_kms_helper,drm uio_pdrv_genirq 12288 0 uio 20480 1 uio_pdrv_genirq
๋ถํธ ํํฐ์ ์์ ์ฌ์ฉ ์ค์ธ ์ปค๋ ์ด๋ฏธ์ง ํ์ธ
root@raspberrypi:/home/jinho# ls /boot cmdline.txt initrd.img-6.12.25+rpt-rpi-2712 System.map-6.12.25+rpt-rpi-v8 config-6.12.25+rpt-rpi-2712 initrd.img-6.12.25+rpt-rpi-v8 vmlinuz-6.12.25+rpt-rpi-2712 config-6.12.25+rpt-rpi-v8 issue.txt vmlinuz-6.12.25+rpt-rpi-v8 config.txt overlays firmware System.map-6.12.25+rpt-rpi-2712
์ค์ ํ์ผ ์์:
kernel7.img (32bit ARMv7์ฉ)
kernel8.img (64bit ARMv8์ฉ)
config-6.1.21-v7l+ (ํ์ฌ ์ปค๋ ์ค์ ์ ์ฅ๋ ํ์ผ)
๋ถํธ ํํฐ์ ์์ ์ฌ์ฉ ์ค์ธ ์ปค๋ ์ด๋ฏธ์ง ํ์ธ
root@raspberrypi:/home/jinho# cat /proc/device-tree/model Raspberry Pi 4 Model B Rev 1.2