x86: Move common PCH code into a common place

The SATA indexed register write functions are common to several Intel PCHs.
Move this into a common location.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/x86/cpu/intel_common/pch.c b/arch/x86/cpu/intel_common/pch.c
new file mode 100644
index 0000000..1f05b44
--- /dev/null
+++ b/arch/x86/cpu/intel_common/pch.c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2016 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <asm/pch_common.h>
+
+u32 pch_common_sir_read(struct udevice *dev, int idx)
+{
+	u32 data;
+
+	dm_pci_write_config32(dev, SATA_SIRI, idx);
+	dm_pci_read_config32(dev, SATA_SIRD, &data);
+
+	return data;
+}
+
+void pch_common_sir_write(struct udevice *dev, int idx, u32 value)
+{
+	dm_pci_write_config32(dev, SATA_SIRI, idx);
+	dm_pci_write_config32(dev, SATA_SIRD, value);
+}