At some point we may need to distinguish between different types of PCHs,
but for existing supported platforms we only need to worry about version 7
and version 9 bridges. Add a driver for the PCH9.
Signed-off-by: Simon Glass <s...@chromium.org>
---
drivers/pch/Makefile | 1 +
drivers/pch/pch9.c | 41 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 42 insertions(+)
create mode 100644 drivers/pch/pch9.c
diff --git a/drivers/pch/Makefile b/drivers/pch/Makefile
index 33aa727..dde9e86 100644
--- a/drivers/pch/Makefile
+++ b/drivers/pch/Makefile
@@ -4,3 +4,4 @@
obj-y += pch-uclass.o
obj-y += pch7.o
+obj-y += pch9.o
diff --git a/drivers/pch/pch9.c b/drivers/pch/pch9.c
new file mode 100644
index 0000000..2f40a6b
--- /dev/null
+++ b/drivers/pch/pch9.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <pch.h>
+
+static int baytrail_pch_get_sbase(struct udevice *dev, ulong *sbasep)
+{
+ uint32_t sbase_addr;
+
+ dm_pci_read_config32(dev, 0x54, &sbase_addr);
+ *sbasep = sbase_addr & 0xfffffe00;
+
+ return 0;
+}
+
+static int baytrail_pch_get_version(struct udevice *dev)
+{
+ return 9;
+}
+
+static const struct pch_ops baytrail_pch_ops = {
+ .get_sbase = baytrail_pch_get_sbase,
+ .get_version = baytrail_pch_get_version,
+};
+
+static const struct udevice_id baytrailpch_ids[] = {
+ { .compatible = "intel,pch9" },
+ { }
+};
+
+U_BOOT_DRIVER(pch9_drv) = {
+ .name = "intel-pch",
+ .id = UCLASS_PCH,
+ .of_match = baytrailpch_ids,
+ .ops = &baytrail_pch_ops,
+};
--
2.6.0.rc2.230.g3dd15c0
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