Add a driver for the apollolake Platform Controller Hub. It does not have
any functionality and is just a placeholder for now.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v3: None
Changes in v2:
- Drop probe() function
- Implement set_spi_protect()
arch/x86/cpu/apollolake/Makefile | 1 +
arch/x86/cpu/apollolake/pch.c | 36 ++++++++++++++++++++++
arch/x86/include/asm/arch-apollolake/pch.h | 9 ++++++
3 files changed, 46 insertions(+)
create mode 100644 arch/x86/cpu/apollolake/pch.c
create mode 100644 arch/x86/include/asm/arch-apollolake/pch.h
diff --git a/arch/x86/cpu/apollolake/Makefile b/arch/x86/cpu/apollolake/Makefile
index 71c3cd08241..7f76572e551 100644
--- a/arch/x86/cpu/apollolake/Makefile
+++ b/arch/x86/cpu/apollolake/Makefile
@@ -9,5 +9,6 @@ obj-y += hostbridge.o
obj-y += itss.o
obj-y += lpc.o
obj-y += lpss.o
+obj-y += pch.o
obj-y += pmc.o
obj-y += uart.o
diff --git a/arch/x86/cpu/apollolake/pch.c b/arch/x86/cpu/apollolake/pch.c
new file mode 100644
index 00000000000..89667b65224
--- /dev/null
+++ b/arch/x86/cpu/apollolake/pch.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <pch.h>
+#include <spl.h>
+#include <asm/lpc_common.h>
+
+#define BIOS_CTRL 0xdc
+
+static int apl_set_spi_protect(struct udevice *dev, bool protect)
+{
+ if (spl_phase() != PHASE_TPL)
+ return lpc_set_spi_protect(dev, BIOS_CTRL, protect);
+
+ return 0;
+}
+
+static const struct pch_ops apl_pch_ops = {
+ .set_spi_protect = apl_set_spi_protect,
+};
+
+static const struct udevice_id apl_pch_ids[] = {
+ { .compatible = "intel,apl-pch" },
+ { }
+};
+
+U_BOOT_DRIVER(apl_pch) = {
+ .name = "apl_pch",
+ .id = UCLASS_PCH,
+ .of_match = apl_pch_ids,
+ .ops = &apl_pch_ops,
+};
diff --git a/arch/x86/include/asm/arch-apollolake/pch.h
b/arch/x86/include/asm/arch-apollolake/pch.h
new file mode 100644
index 00000000000..7f19903a3fe
--- /dev/null
+++ b/arch/x86/include/asm/arch-apollolake/pch.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#ifndef __ASM_ARCH_PCH_H
+#define __ASM_ARCH_PCH_H
+
+#endif /* __ASM_ARCH_PCH_H */
--
2.23.0.866.gb869b98d4c-goog
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