From: Kevin O'Connor <kevin@koconnor.net>
Date: Wed, 19 Aug 2009 02:17:57 +0000 (-0400)
Subject: Work around qemu quirk - dh not reset on ata drive reset.
X-Git-Tag: rel-0.4.2~9
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=f5624d27ec17e1aab28a8ff08aba93d2d9cd8c04;p=seabios.git

Work around qemu quirk - dh not reset on ata drive reset.
---

diff --git a/src/ata.c b/src/ata.c
index 7a008eb..c82e8a3 100644
--- a/src/ata.c
+++ b/src/ata.c
@@ -115,6 +115,9 @@ ata_reset(int driveid)
                 goto done;
             }
         }
+    } else {
+        // QEMU doesn't reset dh on reset, so set it explicitly.
+        outb(ATA_CB_DH_DEV0, iobase1 + ATA_CB_DH);
     }
 
     // On a user-reset request, wait for RDY if it is an ATA device.