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>
---
Changes in v2:
- Rename the PCH functions
- Update the get_version() handle to use an enum
drivers/pch/Makefile | 1 +
drivers/pch/pch9.c | 43 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 44 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..529cb02
--- /dev/null
+++ b/drivers/pch/pch9.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2014 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <pch.h>
+
+#define SBASE_ADDR 0x54
+
+static int pch9_get_sbase(struct udevice *dev, ulong *sbasep)
+{
+ uint32_t sbase_addr;
+
+ dm_pci_read_config32(dev, SBASE_ADDR, &sbase_addr);
+ *sbasep = sbase_addr & 0xfffffe00;
+
+ return 0;
+}
+
+static enum pch_version pch9_get_version(struct udevice *dev)
+{
+ return PCHV_9;
+}
+
+static const struct pch_ops pch9_ops = {
+ .get_sbase = pch9_get_sbase,
+ .get_version = pch9_get_version,
+};
+
+static const struct udevice_id pch9_ids[] = {
+ { .compatible = "intel,pch9" },
+ { }
+};
+
+U_BOOT_DRIVER(pch9_drv) = {
+ .name = "intel-pch9",
+ .id = UCLASS_PCH,
+ .of_match = pch9_ids,
+ .ops = &pch9_ops,
+};
--
2.6.0.rc2.230.g3dd15c0
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