arch/arm64: support armv8r hwdebug #18327
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These two registers need to be cleared before arm64-r hwdebug can be used.The arm64-a does not have such stringent requirements. Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
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Feb 3, 2026
| mdscr |= ARM64_MDSCR_EL1_MDE | ARM64_MDSCR_EL1_KDE; | ||
| write_sysreg(mdscr, mdscr_el1); | ||
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| write_sysreg(0, osdlr_el1); |
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These two registers need to be cleared before arm64-r hwdebug can be used.The arm64-a does not have such stringent requirements.
Note: Please adhere to Contributing Guidelines.
Summary
arm64/hwdebug: support armv8r hwdebug:These two registers need to be cleared before arm64-r hwdebug can be used.The arm64-a does not have such stringent requirements.
Impact
none
Testing
build armv8-r config and use up_debugpoint_add api to test