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authorDuncan Laurie <dlaurie@chromium.org>2015-01-14 12:18:46 -0800
committerStefan Reinauer <stefan.reinauer@coreboot.org>2015-04-10 20:13:56 +0200
commitcf544ac1f9a62cc58e3911c23a0b905950a0ff2f (patch)
tree0bf8be06cae7dfdcc2f46d030113bde0a4e1a292 /src/soc/intel
parentb8a7b71e611fed87a41cc940baa1e42624f97657 (diff)
downloadcoreboot-cf544ac1f9a62cc58e3911c23a0b905950a0ff2f.tar.xz
broadwell: Remove XHCI workarounds on WPT
The workarounds in ACPI methods for D0/D3 transition that are used on haswell/LPT do not all apply to broadwell/WPT. BUG=chrome-os-partner:28234 BRANCH=broadwell TEST=build and boot on samus, test USB functionality and wake and ensure the device still does into D3 state Change-Id: Ic3a75f5bf50e826ade7d942b48cfebb75cf976e6 Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Original-Commit-Id: 1b54d105957ee80ca34048c42fb8f241731281cf Original-Change-Id: I877afd51fc6c9b7906e923b893fc31bdf2cd1090 Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/240850 Original-Reviewed-by: Shawn N <shawnn@chromium.org> Reviewed-on: http://review.coreboot.org/9488 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/soc/intel')
-rw-r--r--src/soc/intel/broadwell/acpi/xhci.asl68
1 files changed, 46 insertions, 22 deletions
diff --git a/src/soc/intel/broadwell/acpi/xhci.asl b/src/soc/intel/broadwell/acpi/xhci.asl
index 9d870e578c..c41275ccd2 100644
--- a/src/soc/intel/broadwell/acpi/xhci.asl
+++ b/src/soc/intel/broadwell/acpi/xhci.asl
@@ -35,6 +35,14 @@ Device (XHCI)
Offset (0x10),
, 16,
XMEM, 16, // MEM_BASE
+ Offset (0x40),
+ , 11,
+ SWAI, 1,
+ , 20,
+ Offset (0x44),
+ , 12,
+ SAIP, 2,
+ , 18,
Offset (0x74),
D0D3, 2,
, 6,
@@ -242,22 +250,30 @@ Device (XHCI)
Store (0, ^D0D3)
}
- // Clear PCI 0xB0[14:13]
- Store (0, ^MB13)
- Store (0, ^MB14)
+ if (LNot (\ISWP())) {
+ // Clear PCI 0xB0[14:13]
+ Store (0, ^MB13)
+ Store (0, ^MB14)
- // Clear MMIO 0x816C[14,2]
- Store (0, CLK0)
- Store (0, CLK1)
+ // Clear MMIO 0x816C[14,2]
+ Store (0, CLK0)
+ Store (0, CLK1)
- // Set MMIO 0x8154[31]
- Store (1, CLK2)
+ // Set MMIO 0x8154[31]
+ Store (1, CLK2)
- // Handle per-port reset if needed
- LPS0 ()
+ // Handle per-port reset if needed
+ LPS0 ()
- // Set MMIO 0x80e0[15]
- Store (1, AX15)
+ // Set MMIO 0x80e0[15]
+ Store (1, AX15)
+
+ // Clear PCI CFG offset 0x40[11]
+ Store (0, ^SWAI)
+
+ // Clear PCI CFG offset 0x44[13:12]
+ Store (0, ^SAIP)
+ }
Return ()
}
@@ -297,19 +313,27 @@ Device (XHCI)
Store (0, ^D0D3)
}
- // Set PCI 0xB0[14:13]
- Store (1, ^MB13)
- Store (1, ^MB14)
+ if (LNot (\ISWP())) {
+ // Set PCI 0xB0[14:13]
+ Store (1, ^MB13)
+ Store (1, ^MB14)
- // Set MMIO 0x816C[14,2]
- Store (1, CLK0)
- Store (1, CLK1)
+ // Set MMIO 0x816C[14,2]
+ Store (1, CLK0)
+ Store (1, CLK1)
- // Clear MMIO 0x8154[31]
- Store (0, CLK2)
+ // Clear MMIO 0x8154[31]
+ Store (0, CLK2)
- // Clear MMIO 0x80e0[15]
- Store (0, AX15)
+ // Clear MMIO 0x80e0[15]
+ Store (0, AX15)
+
+ // Set PCI CFG offset 0x40[11]
+ Store (1, ^SWAI)
+
+ // Set PCI CFG offset 0x44[13:12]
+ Store (1, ^SAIP)
+ }
// Put device in D3
Store (3, ^D0D3)