The linux-edge kernel enables the BL_SWITCHER kernel option, which enables an in-kernel big.LITTLE switcher - with it enabled, only 4 cores are enabled at a time, and the kernel switches between the big and little cores. However, in a server workload, it's more likely that a user wants all 8 cores to work simultaneously. Disable the switcher by default by providing the no_bL_switcher cmdline option. It can still be re-enabled by writing 1 to /sys/kernel/bL_switcher/active. Part-of: https://gitlab.postmarketos.org/postmarketos/pmaports/-/merge_requests/6350
34 lines
1.1 KiB
Batchfile
34 lines
1.1 KiB
Batchfile
setenv kernel_addr_r "0x40008000"
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setenv initrd_addr_r "0x42000000"
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setenv fdt_addr_r "0x44000000"
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setenv kernel_image "vmlinuz"
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setenv initrd_image "uInitrd"
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setenv dtb_file "exynos5422-odroidhc1.dtb"
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printenv
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echo Setting bootargs
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setenv bootargs init=/init.sh rw console=tty0 console=ttySAC2,115200 panic=10 consoleblank=0 loglevel=9 cma=256M initcall_blacklist=exynos_drm_init no_bL_switcher PMOS_FORCE_PARTITION_RESIZE
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if test -e mmc ${mmcbootdev}:${mmcbootpart} ${kernel_image}; then
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echo Loading Kernel: vmlinuz
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load mmc ${mmcbootdev}:${mmcbootpart} ${kernel_addr_r} ${kernel_image};
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fi
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if test -e mmc ${mmcbootdev}:${mmcbootpart} ${kernel_image}-edge; then
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echo Loading Kernel: vmlinuz-edge
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load mmc ${mmcbootdev}:${mmcbootpart} ${kernel_addr_r} ${kernel_image}-edge
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fi
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echo Loading Initramfs
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load mmc ${mmcbootdev}:${mmcbootpart} ${initrd_addr_r} ${initrd_image}
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echo Loading DTB
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load mmc ${mmcbootdev}:${mmcbootpart} ${fdt_addr_r} ${dtb_file}
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echo Resizing FDT
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fdt addr ${fdt_addr_r}
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echo Booting kernel
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bootz ${kernel_addr_r} ${initrd_addr_r} ${fdt_addr_r}
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