ae74e11664
Protect script when ram_freq is not set
Safely load PSCI DTO to enable CPUidle driver: psci_idle
The PSCI DTO shall only be applied if TF-A & Crust
support CPU idle states [0]. Otherwise the CPU usage
will be at 100%. This will not be visible in top,
lead to overheating and battery drain.
Worst case scenario would lead to a fried chip if
the CPU thermal_zone does not work or is not enabled
in DTS.
[0] https://gitlab.com/postmarketOS/pmaports/-/issues/1901#note_1238456920
61 lines
1.5 KiB
Batchfile
61 lines
1.5 KiB
Batchfile
gpio set 98
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gpio set 114
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if test ${mmc_bootdev} -eq 0 ; then
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echo "Booting from SD";
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setenv bootdev 0;
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else
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echo "Booting from eMMC";
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setenv bootdev 2;
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fi;
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setenv bootargs init=/init.sh rw console=tty0 console=ttyS0,115200 earlycon=uart,mmio32,0x01c28000 panic=10 consoleblank=0 loglevel=1 PMOS_NO_OUTPUT_REDIRECT PMOS_FORCE_PARTITION_RESIZE pmos_boot=/dev/mmcblk${bootdev}p1 pmos_root=/dev/mmcblk${bootdev}p2
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printenv
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echo Detecting psci idle state
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fdt addr ${fdtcontroladdr}
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fdt get name pscifdt /cpus/idle-states /
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if test $? -eq 0; then
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echo PSCI idle state enabled;
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setenv iscpscienabled 1;
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else
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echo PSCI idle state disabled;
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fi
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echo Loading DTB
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load mmc ${mmc_bootdev}:1 ${fdt_addr_r} ${fdtfile}
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fdt addr ${fdt_addr_r}
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fdt resize 2048
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if printenv ram_freq; then
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echo Adding FTD RAM clock
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fdt mknode / memory
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fdt set /memory ram_freq ${ram_freq}
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fi
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if test ${iscpscienabled} -eq 1; then
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echo Applying PSCI DTBO;
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load mmc ${mmc_bootdev}:1 ${fdtoverlay_addr_r} sun50i-a64-psci.dtbo
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fdt apply ${fdtoverlay_addr_r}
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fi
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echo Loading Initramfs
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load mmc ${mmc_bootdev}:1 ${ramdisk_addr_r} initramfs
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setenv ramdisk_size ${filesize}
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echo Loading Kernel
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load mmc ${mmc_bootdev}:1 ${kernel_addr_r} vmlinuz
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gpio set 115
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echo Loading user script
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setenv user_scriptaddr 0x50700000
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load mmc ${mmc_bootdev}:1 ${user_scriptaddr} user.scr
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if test $? -eq 0; then source ${user_scriptaddr}; else echo No user script found; fi
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echo Booting kernel
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gpio set 116
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gpio clear 98
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booti ${kernel_addr_r} ${ramdisk_addr_r}:${ramdisk_size} ${fdt_addr_r}
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