Author: andrew Date: Fri Oct 14 22:20:14 2016 New Revision: 307334 URL: https://svnweb.freebsd.org/changeset/base/307334
Log: Create macros for the MAIR memory attributes. While here add an uncached memory type, however the VM code still needs to be taught about this. MFC after: 1 week Sponsored by: ABT Systems Ltd Modified: head/sys/arm64/arm64/locore.S head/sys/arm64/include/armreg.h Modified: head/sys/arm64/arm64/locore.S ============================================================================== --- head/sys/arm64/arm64/locore.S Fri Oct 14 21:51:50 2016 (r307333) +++ head/sys/arm64/arm64/locore.S Fri Oct 14 22:20:14 2016 (r307334) @@ -617,8 +617,10 @@ start_mmu: .align 3 mair: - /* Device Normal, no cache Normal, write-back */ - .quad MAIR_ATTR(0x00, 0) | MAIR_ATTR(0x44, 1) | MAIR_ATTR(0xff, 2) + .quad MAIR_ATTR(MAIR_DEVICE_nGnRnE, 0) | \ + MAIR_ATTR(MAIR_NORMAL_NC, 1) | \ + MAIR_ATTR(MAIR_NORMAL_WB, 2) | \ + MAIR_ATTR(MAIR_NORMAL_WT, 3) tcr: .quad (TCR_TxSZ(64 - VIRT_BITS) | TCR_ASID_16 | TCR_TG1_4K | \ TCR_CACHE_ATTRS | TCR_SMP_ATTRS) Modified: head/sys/arm64/include/armreg.h ============================================================================== --- head/sys/arm64/include/armreg.h Fri Oct 14 21:51:50 2016 (r307333) +++ head/sys/arm64/include/armreg.h Fri Oct 14 22:20:14 2016 (r307334) @@ -357,6 +357,10 @@ /* MAIR_EL1 - Memory Attribute Indirection Register */ #define MAIR_ATTR_MASK(idx) (0xff << ((n)* 8)) #define MAIR_ATTR(attr, idx) ((attr) << ((idx) * 8)) +#define MAIR_DEVICE_nGnRnE 0x00 +#define MAIR_NORMAL_NC 0x44 +#define MAIR_NORMAL_WT 0x88 +#define MAIR_NORMAL_WB 0xff /* PAR_EL1 - Physical Address Register */ #define PAR_F_SHIFT 0 _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"