x86: apl: Add systemagent driver
This driver handles communication with the systemagent which needs to be
told when U-Boot has completed its init.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/include/asm/arch-apollolake/systemagent.h b/arch/x86/include/asm/arch-apollolake/systemagent.h
new file mode 100644
index 0000000..206d890
--- /dev/null
+++ b/arch/x86/include/asm/arch-apollolake/systemagent.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2017 Intel Corporation.
+ * Take from coreboot project file of the same name
+ */
+
+#ifndef _ASM_ARCH_SYSTEMAGENT_H
+#define _ASM_ARCH_SYSTEMAGENT_H
+
+/* Device 0:0.0 PCI configuration space */
+#define MCHBAR 0x48
+
+/* RAPL Package Power Limit register under MCHBAR */
+#define PUNIT_THERMAL_DEVICE_IRQ 0x700C
+#define PUINT_THERMAL_DEVICE_IRQ_VEC_NUMBER 0x18
+#define PUINT_THERMAL_DEVICE_IRQ_LOCK 0x80000000
+#define BIOS_RESET_CPL 0x7078
+#define PCODE_INIT_DONE BIT(8)
+#define MCHBAR_RAPL_PPL 0x70A8
+#define CORE_DISABLE_MASK 0x7168
+#define CAPID0_A 0xE4
+#define VTD_DISABLE BIT(23)
+#define DEFVTBAR 0x6c80
+#define GFXVTBAR 0x6c88
+#define VTBAR_ENABLED 0x01
+#define VTBAR_MASK GENMASK_ULL(39, 12)
+#define VTBAR_SIZE 0x1000
+
+/**
+ * enable_bios_reset_cpl() - Tell the system agent that memory/power are ready
+ *
+ * This should be called when U-Boot has set up the memory and power
+ * management.
+ */
+void enable_bios_reset_cpl(void);
+
+#endif