@@ -6,6 +6,7 @@ obj-$(CONFIG_SPL_BUILD) += spl.o
obj-$(CONFIG_SPL_BUILD) += systemagent.o
ifndef CONFIG_TPL_BUILD
+obj-y += cpu.o
obj-y += punit.o
endif
new file mode 100644
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#include <common.h>
+#include <cpu.h>
+#include <dm.h>
+#include <asm/cpu_common.h>
+#include <asm/cpu_x86.h>
+
+struct cpu_apollolake_priv {
+};
+
+static int apollolake_get_info(struct udevice *dev, struct cpu_info *info)
+{
+ return cpu_intel_get_info(info, INTEL_BCLK_MHZ);
+}
+
+static int apollolake_get_count(struct udevice *dev)
+{
+ return 4;
+}
+
+static int cpu_x86_apollolake_probe(struct udevice *dev)
+{
+ return 0;
+}
+
+static const struct cpu_ops cpu_x86_apollolake_ops = {
+ .get_desc = cpu_x86_get_desc,
+ .get_info = apollolake_get_info,
+ .get_count = apollolake_get_count,
+ .get_vendor = cpu_x86_get_vendor,
+};
+
+static const struct udevice_id cpu_x86_apollolake_ids[] = {
+ { .compatible = "intel,apl-cpu" },
+ { }
+};
+
+U_BOOT_DRIVER(cpu_x86_apollolake_drv) = {
+ .name = "cpu_x86_apollolake",
+ .id = UCLASS_CPU,
+ .of_match = cpu_x86_apollolake_ids,
+ .bind = cpu_x86_bind,
+ .probe = cpu_x86_apollolake_probe,
+ .ops = &cpu_x86_apollolake_ops,
+ .priv_auto_alloc_size = sizeof(struct cpu_apollolake_priv),
+ .flags = DM_FLAG_PRE_RELOC,
+};
new file mode 100644
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#ifndef __ASM_ARCH_CPU_H
+#define __ASM_ARCH_CPU_H
+
+/* Common Timer Copy (CTC) frequency - 19.2MHz */
+#define CTC_FREQ 19200000
+
+/* Set to true to use the fast SPI driver to boot, instead of mapped SPI */
+#define BOOT_FROM_FAST_SPI_FLASH false
+
+/*
+ * We need to read well past the end of the region in order for execution from
+ * the loaded data to work. It is not clear why.
+ */
+#define SAFETY_MARGIN 0x4000
+
+#endif /* __ASM_ARCH_CPU_H */
Add a bare-bones CPU driver so that CPUs can be probed. Signed-off-by: Simon Glass <sjg@chromium.org> --- arch/x86/cpu/apollolake/Makefile | 1 + arch/x86/cpu/apollolake/cpu.c | 51 ++++++++++++++++++++++ arch/x86/include/asm/arch-apollolake/cpu.h | 21 +++++++++ 3 files changed, 73 insertions(+) create mode 100644 arch/x86/cpu/apollolake/cpu.c create mode 100644 arch/x86/include/asm/arch-apollolake/cpu.h