jh7100: fix hang during os boot by not to choose hart0#2
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mcd500 wants to merge 1 commit intodavidlt:Fedorafrom
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jh7100: fix hang during os boot by not to choose hart0#2mcd500 wants to merge 1 commit intodavidlt:Fedorafrom
mcd500 wants to merge 1 commit intodavidlt:Fedorafrom
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The jh7100 SoC have e24(rv32) in hart0 and u73(rv64) in hart1 and hart2. Prevent opensbi to choose hart0 for the booting core for the os since e24 is not compatible with u73. Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com>
Author
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I reopened it of the PR #1 |
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The hart_index2id[] approach used by this PR is not correct. OpenSBI firmwares are built for either RV32 or RV64 but not both. This means the RV32 core on JH7100 is getting stuck somewhere in OpenSBI and does not cleanly enter a WFI based hang loop. I suggest to have add assembly code at start of _start() in fw_base.S which will compare firmware compile time XLEN with runtime XLEN and if there is a mismatch then jump to _start_hang() (which is a WFI loop) Regards, |
Author
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@avpatel Thank you for your valuable comment. I will add the code in _start() in fw_base.S. |
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The jh7100 SoC have e24(rv32) in hart0 and u73(rv64) in
hart1 and hart2. Prevent opensbi to choose hart0 for the
booting core for the os since e24 is not compatible with u73.
Signed-off-by: Akira Tsukamoto akira.tsukamoto@gmail.com