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

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/79145?usp=email )

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

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.

Change-Id: Ic3e15c1d8d4b1d1012d6204cc65de92d91431fbe
Signed-off-by: Patrick Rudolph 
---
M src/southbridge/intel/bd82x6x/Makefile.inc
M src/southbridge/intel/bd82x6x/pch.c
M src/southbridge/intel/bd82x6x/pch.h
3 files changed, 15 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/45/79145/1

diff --git a/src/southbridge/intel/bd82x6x/Makefile.inc b/src/southbridge/intel/bd82x6x/Makefile.inc
index 0a4cc83..eac05ab 100644
--- a/src/southbridge/intel/bd82x6x/Makefile.inc
+++ b/src/southbridge/intel/bd82x6x/Makefile.inc
@@ -29,6 +29,7 @@
 romstage-y += me_status.c
 romstage-y += early_rcba.c
 romstage-y += early_pch.c
+romstage-y += pch.c

ifeq ($(CONFIG_USE_NATIVE_RAMINIT),y)
 romstage-y += early_thermal.c early_me.c early_usb.c
diff --git a/src/southbridge/intel/bd82x6x/pch.c b/src/southbridge/intel/bd82x6x/pch.c
index a7ab83a..da7e585 100644
--- a/src/southbridge/intel/bd82x6x/pch.c
+++ b/src/southbridge/intel/bd82x6x/pch.c
@@ -4,10 +4,10 @@
 #include <delay.h>
 #include <device/device.h>
 #include <device/pci.h>
+#include <device/pci_def.h>
 #include <device/pci_ops.h>
 #include <string.h>
 #include <timer.h>
-
 #include "chip.h"
 #include "pch.h"

@@ -41,6 +41,18 @@
    return pch_type;
 }

+bool pch_is_mobile(void)
+{
+	const u16 devid = pci_s_read_config16(PCH_LPC_DEV, PCI_DEVICE_ID);
+	const u16 devids[] = {0x1C43, 0x1C47, 0x1C49, 0x1C4B, 0x1C4F, 0x1C41,
+			      0x1C4D, 0x1E42, 0x1E55, 0x1E5D, 0x1E57, 0x1E58,
+			      0x1E59, 0x1E43, 0x1E56};
+	for (size_t i = 0; i < ARRAY_SIZE(devids); i++)
+		if (devid == devids[i])
+			return 1;
+	return 0;
+}
+
 static 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 6d164ea..bfd0d73 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -34,6 +34,7 @@

int pch_silicon_revision(void);
 int pch_silicon_type(void);
+bool pch_is_mobile(void);
 void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);

void enable_usb_bar(void);