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TH1520(C910)boot information: CPU1、CPU2、CPU3: failed to come online ; only CPU0 succeed to come online #336
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The commit remove fdt_reset_thead |
@RevySR Do you know how to make use of the changes in zero_stage_boot? I'm not sure about the steps to deploy it onto a board. |
I don't know. Ren Guo knows how to do it |
The problem is that upstream OpenSBI is missing a HSM driver for this SoC. With or without zero_stage_boot, a proper HSM driver is still needed for CPU power management (hotplug, cpuidle). And once OpenSBI has a real HSM driver, you don't need any assistance from zero_stage_boot for SMP bringup. |
Yes, the th1520 needs an SoC platform HSM driver. The zero_stage_boot is just for the CPU FPGA prototype to replace the reset_sample. |
Before zero_stage_boot gets into the first-stage bootloader, you could revert the removing reset-sample patch first. |
With the help of your advice, CPU1, CPU2, and CPU3 could succeed to come online normally. Thank you so much! |
Signed-off-by: solarises <392345617@qq.com>
build LicheePi4A images link:https://github.com/armbian/build.git
build command: sudo ./compile.sh BOARD=licheepi-4a BRANCH=edge RELEASE=jammy BUILD_MINIMAL=no BUILD_DESKTOP=no KERNEL_CONFIGURE=yes COMPRESS_OUTPUTIMAGE=sha,gpg,xz
Linux6.6 kernel link: https://github.com/revyos/th1520-linux-kernel.git
branch: th1520-v6.6.3
opensbi link: https://github.com/riscv-software-src/opensbi.git
branch: master
how to update opensbi binary? you can refer to the following fix:
thead: update linux to 6.6-rc5, update opensbi binary
armbian/build@3098c2f
LicheePi4A TH1520 boot information txt:
licheePi4A_linux6_6_dmesg_official_opensbi.txt
[ 0.090218] smp: Bringing up secondary CPUs ...
[ 1.102092] CPU1: failed to come online
[ 2.129308] CPU2: failed to come online
[ 3.156496] CPU3: failed to come online
[ 3.160519] smp: Brought up 1 node, 1 CPU
However if we use https://github.com/revyos/opensbi.git (branch: th1520-v1.3.1) , LicheePi4A TH1520 boot information is shown as following:
licheePi4A_linux_6_6_dmesg_revyos_opensbi.txt
[ 0.090069] smp: Bringing up secondary CPUs ...
[ 0.118766] cpu1: Ratio of byte access time to unaligned word access is 6.14, unaligned accesses are fast
[ 0.150904] cpu2: Ratio of byte access time to unaligned word access is 6.14, unaligned accesses are fast
[ 0.183032] cpu3: Ratio of byte access time to unaligned word access is 6.14, unaligned accesses are fast
[ 0.193054] smp: Brought up 1 node, 4 CPUs
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