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| author | Dongyan Qian <qiandongyan@loongson.cn> | 2026-10-20 13:39:34 +0300 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2026-10-24 20:15:38 +0300 |
| commit | 0a503bc2f5bd37c7a5d39d0ba31008f446f0298d (patch) | |
| tree | 22067de8bdc99bbe4704c2fe9431b7a7325f1d78 /MdePkg/Library/BasePostCodeLibPort80 | |
| parent | 02c1141a0e5b5c958630e81ac6ebb4b03c1e836f (diff) | |
| download | edk2-master.tar.xz | |
Add CsrRead(), CsrWrite() and CsrXChg() support for IMPCTL1 (0x80),
IMPCTL2 (0x81) and TLBRPRMD (0x8F). These selectors currently reach
the unsupported-selector trap instead of a CSR instruction.
Define the register numbers, add the IMPCTL1/2 dispatch range and
extend the existing TLB refill range and instruction tables through
TLBRPRMD. Preserve the existing handling of all other selectors.
The register definitions follow LoongArch Reference Manual Volume 1,
version 1.10, sections 7.4.18, 7.4.19 and 7.5.17. IMPCTL field semantics
remain implementation-specific; this change only enables CSR access.
Link: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html
Signed-off-by: Dongyan Qian <qiandongyan@loongson.cn>
Diffstat (limited to 'MdePkg/Library/BasePostCodeLibPort80')
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