diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2015-05-25 22:36:26 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-06-04 02:39:39 -0600 |
| commit | 0fcb7acf6748d2ee0b7abfd75e074840be6b7e0e (patch) | |
| tree | 665c64676564c76a278dca6464b410c5822a5dd4 /arch/x86/include/asm/arch-qemu/qemu.h | |
| parent | cc7debc7199b3c637ceead92bc103aeb6eb10a38 (diff) | |
x86: qemu: Enable legacy IDE I/O ports decode
QEMU always decode legacy IDE I/O ports on PIIX chipset. However Linux ata_piix
driver does sanity check to see whether legacy ports decode is turned on.
To make Linux ata_piix driver happy, turn on the decode via IDE_TIMING register.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include/asm/arch-qemu/qemu.h')
| -rw-r--r-- | arch/x86/include/asm/arch-qemu/qemu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/arch-qemu/qemu.h b/arch/x86/include/asm/arch-qemu/qemu.h index 7a9901d261..5cbfffffee 100644 --- a/arch/x86/include/asm/arch-qemu/qemu.h +++ b/arch/x86/include/asm/arch-qemu/qemu.h @@ -13,6 +13,11 @@ #define PAM_NUM 7 #define PAM_RW 0x33 +/* IDE Timing Register */ +#define IDE0_TIM 0x40 +#define IDE1_TIM 0x42 +#define IDE_DECODE_EN 0x8000 + /* I/O Ports */ #define CMOS_ADDR_PORT 0x70 #define CMOS_DATA_PORT 0x71 |