diff options
| author | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2024-08-13 20:48:01 +0000 |
|---|---|---|
| committer | Alexander Bluhm <bluhm@cvs.openbsd.org> | 2024-08-13 20:48:01 +0000 |
| commit | 8155774db9290d4f3093e46c9c9cc068cfb2cbe6 (patch) | |
| tree | 8fe666e13543ccdfb0121b726135c62162b629ac /sys/dev/ic | |
| parent | c5bb23368d2c4e68e7424c7130f597d87e48b4a4 (diff) | |
For AMD SEV use correct command mask in ccp(4) driver.
According to AMD SEV API specification, the mask for command ID is
supposed to be of length 10 (Bits [25:16]), rather than length 6.
This ensures that all commands are properly processed by the PSP.
from Aaron Debebe; OK hshoexer@
Diffstat (limited to 'sys/dev/ic')
| -rw-r--r-- | sys/dev/ic/ccp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/dev/ic/ccp.c b/sys/dev/ic/ccp.c index 79650a6c63a..5981ae43450 100644 --- a/sys/dev/ic/ccp.c +++ b/sys/dev/ic/ccp.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ccp.c,v 1.5 2024/06/13 17:59:08 bluhm Exp $ */ +/* $OpenBSD: ccp.c,v 1.6 2024/08/13 20:48:00 bluhm Exp $ */ /* * Copyright (c) 2018 David Gwynne <dlg@openbsd.org> @@ -228,7 +228,7 @@ ccp_docmd(struct ccp_softc *sc, int cmd, uint64_t paddr) plo = ((paddr >> 0) & 0xffffffff); phi = ((paddr >> 32) & 0xffffffff); - cmdword = (cmd & 0x3f) << 16; + cmdword = (cmd & 0x3ff) << 16; if (!cold) cmdword |= PSP_CMDRESP_IOC; |