tree 91db04bcfb735185821708eda96995e5cc889590
parent 3dd9e54703e6ae4f9ab3767f5cecc99edf066668
author Olaf Hering <olaf@aepfle.de> 1689148042 +0200
committer Paolo Bonzini <pbonzini@redhat.com> 1689325857 +0200

hw/ide/piix: properly initialize the BMIBA register

According to the 82371FB documentation (82371FB.pdf, 2.3.9. BMIBA-BUS
MASTER INTERFACE BASE ADDRESS REGISTER, April 1997), the register is
32bit wide. To properly reset it to default values, all 32bit need to be
cleared. Bit #0 "Resource Type Indicator (RTE)" needs to be enabled.

The initial change wrote just the lower 8 bit, leaving parts of the "Bus
Master Interface Base Address" address at bit 15:4 unchanged.

Fixes: e6a71ae327 ("Add support for 82371FB (Step A1) and Improved support for 82371SB (Function 1)")

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230712074721.14728-1-olaf@aepfle.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>