diff options
| author | Paul Burton <paul.burton@imgtec.com> | 2014-03-21 15:20:31 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-31 18:17:12 +0200 |
| commit | fa12b773b7fb5830469086d36eb5be9f6b512f4d (patch) | |
| tree | 7f1f4ce47d8b0a24c5b642c84fdb2f9e2cb7a43b /arch/mips/include | |
| parent | 024e6a8b5bb16b1372eec744f417779aa4b59d1c (diff) | |
MIPS: Malta: Setup PM I/O region on boot
This patch ensures that the kernel sets a sane base address for the
PIIX4 PM I/O register region during boot. Without this the kernel may
not successfully claim the region as a resource if the bootloader didn't
configure the region. With this patch the kernel will always succeed
with:
pci 0000:00:0a.3: quirk: [io 0x1000-0x103f] claimed by PIIX4 ACPI
The lack of the resource claiming is easily reproducible without this
patch using current versions of QEMU.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Tested-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6641/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/mips-boards/piix4.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mips-boards/piix4.h b/arch/mips/include/asm/mips-boards/piix4.h index 836e2ede24de..9cf54041d416 100644 --- a/arch/mips/include/asm/mips-boards/piix4.h +++ b/arch/mips/include/asm/mips-boards/piix4.h @@ -50,4 +50,9 @@ #define PIIX4_FUNC1_IDETIM_SECONDARY_HI 0x43 #define PIIX4_FUNC1_IDETIM_SECONDARY_HI_IDE_DECODE_EN (1 << 7) +/* Power Management Configuration Space */ +#define PIIX4_FUNC3_PMBA 0x40 +#define PIIX4_FUNC3_PMREGMISC 0x80 +#define PIIX4_FUNC3_PMREGMISC_EN (1 << 0) + #endif /* __ASM_MIPS_BOARDS_PIIX4_H */ |