lib: sbi: fix number of PMP entries detection #374
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CSR_PMPADDRn lower bits may read all-0 or all-1, depending on the configuration. For TOR it is all-0, for NAPOT - all-1. Thus if PMP entry was pre-configured as NAPOT, original code would stop scanning because value read back not equal to the written one. Mask lower bits before comparison to fix this Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>
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We have mailing list based patch review so it would be great if you can send these patchs to OpenSBI mailing list. You need to join OpenSBI mailing list using following link Make sure you use "git send-email" to send the patches. Thanks for your contribution to OpenSBI project. |
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CSR_PMPADDRn lower bits may read all-0 or all-1, depending on the configuration. For TOR it is all-0, for NAPOT - all-1.
Thus if PMP entry was pre-configured as NAPOT, original code would stop scanning because value read back not equal to the written one.
Mask lower bits before comparison to fix this