[S] Change in coreboot[main]: sb/intel/bd82x6x/pch: Add method to identify PCH

[Shelley Chen (Code Review)]

Shelley Chen has submitted this change. ( https://review.coreboot.org/c/coreboot/+/79145?usp=email )

Change subject: sb/intel/bd82x6x/pch: Add method to identify PCH
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sb/intel/bd82x6x/pch: Add method to identify PCH

Identify PCH type by LPC device ID. This allows to identify
the PCH without including northbridge headers.

Tested:	Lenovo X220 still boots.

Change-Id: Ic3e15c1d8d4b1d1012d6204cc65de92d91431fbe
Signed-off-by: Patrick Rudolph 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79145
Tested-by: build bot (Jenkins) 
Reviewed-by: Felix Held 
---
M src/southbridge/intel/bd82x6x/common.c
M src/southbridge/intel/bd82x6x/pch.h
2 files changed, 22 insertions(+), 0 deletions(-)

Approvals:
  Felix Held: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/southbridge/intel/bd82x6x/common.c b/src/southbridge/intel/bd82x6x/common.c
index f4c757a..7163d3e 100644
--- a/src/southbridge/intel/bd82x6x/common.c
+++ b/src/southbridge/intel/bd82x6x/common.c
@@ -32,6 +32,27 @@
    return pch_type;
 }

+bool pch_is_mobile(void)
+{
+	const u16 devids[] = {
+		PCI_DID_INTEL_6_SERIES_MOBILE_SFF, PCI_DID_INTEL_6_SERIES_MOBILE,
+		PCI_DID_INTEL_6_SERIES_UM67, PCI_DID_INTEL_6_SERIES_HM65,
+		PCI_DID_INTEL_6_SERIES_HM67, PCI_DID_INTEL_6_SERIES_QS67,
+		PCI_DID_INTEL_6_SERIES_QM67,
+		PCI_DID_INTEL_7_SERIES_MOBILE, PCI_DID_INTEL_7_SERIES_MOBILE_SFF,
+		PCI_DID_INTEL_7_SERIES_QM77, PCI_DID_INTEL_7_SERIES_QS77,
+		PCI_DID_INTEL_7_SERIES_HM77, PCI_DID_INTEL_7_SERIES_UM77,
+		PCI_DID_INTEL_7_SERIES_HM76, PCI_DID_INTEL_7_SERIES_HM75,
+		PCI_DID_INTEL_7_SERIES_HM70, PCI_DID_INTEL_7_SERIES_NM70
+	};
+	u16 devid = pci_s_read_config16(PCH_LPC_DEV, PCI_DEVICE_ID);
+
+	for (size_t i = 0; i < ARRAY_SIZE(devids); i++)
+		if (devid == devids[i])
+			return true;
+	return false;
+}
+
 int pch_silicon_supported(int type, int rev)
 {
    int cur_type = pch_silicon_type();
diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index 3bb8701..88c8df5c 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -35,6 +35,7 @@
 int pch_silicon_revision(void);
 int pch_silicon_type(void);
 int pch_silicon_supported(int type, int rev);
+bool pch_is_mobile(void);
 void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);

void enable_usb_bar(void);