diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-12-04 22:02:51 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-12-04 22:02:51 +0100 |
| commit | f48f1a324aaad4616b93ec595d5e0f2e22d12bc4 (patch) | |
| tree | 6481066d6ec62f330f6453cbe8462efb6343fc31 /sys/src/9/bcm/archbcm.c | |
| parent | c9570c14af7780384df818c94700dc8a18a29423 (diff) | |
bcm: use extended small pages so XN bit can work
the change to support no-execute bits broke the original
raspberry pi1, as it uses backwards compatible page table
format.
to use the XN bit, subpage AP bits have to be disabled
using the XP bit in CP15 Control Register c1 Bit 23.
Diffstat (limited to 'sys/src/9/bcm/archbcm.c')
| -rw-r--r-- | sys/src/9/bcm/archbcm.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/sys/src/9/bcm/archbcm.c b/sys/src/9/bcm/archbcm.c index dd480bc43..d2e138330 100644 --- a/sys/src/9/bcm/archbcm.c +++ b/sys/src/9/bcm/archbcm.c @@ -116,12 +116,6 @@ archbcmlink(void) } int -l2ap(int ap) -{ - return (AP(3, (ap))|AP(2, (ap))|AP(1, (ap))|AP(0, (ap))); -} - -int cmpswap(long *addr, long old, long new) { return cas32(addr, old, new); |