soc/intel/cannonlake: Add ramstage SystemAgent support

Revere memory resource within SA, also perform necessary routine for
initialization during ramstage.

Change-Id: Ibaa7334b0d94fedc87e707a136c9537e2e6f57cb
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/20914
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 59 insertions, 0 deletions

diff --git a/src/soc/intel/cannonlake/Makefile.inc b/src/soc/intel/cannonlake/Makefile.inc
index 537a973a61..37434bc4a1 100644
--- a/src/soc/intel/cannonlake/Makefile.inc
+++ b/src/soc/intel/cannonlake/Makefile.inc
@@ -19,6 +19,7 @@ romstage-$(CONFIG_DRIVERS_UART_8250MEM) += uart.c
 
 ramstage-y += cbmem.c
 ramstage-$(CONFIG_PLATFORM_USES_FSP2_0) += reset.c
+ramstage-y += systemagent.c
 ramstage-$(CONFIG_DRIVERS_UART_8250MEM) += uart.c
 
 CPPFLAGS_common += -I$(src)/soc/intel/cannonlake/include/fsp20
diff --git a/src/soc/intel/cannonlake/systemagent.c b/src/soc/intel/cannonlake/systemagent.c
new file mode 100644
index 0000000000..7ce152dc21
--- /dev/null
+++ b/src/soc/intel/cannonlake/systemagent.c
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007-2009 coresystems GmbH
+ * Copyright (C) 2014 Google Inc.
+ * Copyright (C) 2015-2017 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <intelblocks/systemagent.h>
+#include <soc/iomap.h>
+#include <soc/systemagent.h>
+
+/*
+ * SoC implementation
+ *
+ * Add all known fixed memory ranges for Host Controller/Mmeory
+ * controller.
+ */
+void soc_add_fixed_mmio_resources(struct device *dev, int *index)
+{
+	static const struct sa_mmio_descriptor soc_fixed_resources[] = {
+		{ PCIEXBAR, CONFIG_MMCONF_BASE_ADDRESS, CONFIG_SA_PCIEX_LENGTH,
+				"PCIEXBAR" },
+		{ MCHBAR, MCH_BASE_ADDRESS, MCH_BASE_SIZE, "MCHBAR" },
+		{ DMIBAR, DMI_BASE_ADDRESS, DMI_BASE_SIZE, "DMIBAR" },
+		{ EPBAR, EP_BASE_ADDRESS, EP_BASE_SIZE, "EPBAR" },
+		{ REGBAR, REG_BASE_ADDRESS, REG_BASE_SIZE, "REGBAR" },
+		{ EDRAMBAR, EDRAM_BASE_ADDRESS, EDRAM_BASE_SIZE, "EDRAMBAR" },
+	};
+
+	sa_add_fixed_mmio_resources(dev, index, soc_fixed_resources,
+			ARRAY_SIZE(soc_fixed_resources));
+}
+
+/*
+ * SoC implementation
+ *
+ * Perform System Agent Initialization during Ramstage phase.
+ */
+void soc_systemagent_init(struct device *dev)
+{
+	/* Enable Power Aware Interrupt Routing */
+	enable_power_aware_intr();
+
+	/* Enable BIOS Reset CPL */
+	enable_bios_reset_cpl();
+}