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Programming/Linux_Kernel

linux kernel - boot args 중 boot_cpus

두개의 cpu 만 입력하면, 두개로만 부팅함.

 

bootargs: boot_cpus=0,1 console=ram initcall_debug=0 loglevel=9 root=/dev/sda1 firmware_class.path=/lib/firmware rootwait rootfstype=ext4 init=/sbin/init reserve-sam=0xffffff81fa080000 reserve-gdc=0xffffff81fa460000

Baremetal solution DT Address (0x8a000000) with Exception Level (2)

 

Samsung Embedded Linux for Exyno Auto 2.6.1 euto-v9 ttySAC0

 

euto-v9 login: root

root@euto-v9:~# cat /proc/cpuinfo

processor       : 0

BogoMIPS        : 52.00

Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop

CPU implementer : 0x41

CPU architecture: 8

CPU variant     : 0x1

CPU part        : 0xd0b

CPU revision    : 0

 

processor       : 1

BogoMIPS        : 52.00

Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop

CPU implementer : 0x41

CPU architecture: 8

CPU variant     : 0x1

CPU part        : 0xd0b

CPU revision    : 0