Patch set updated for coreboot: soc/apollolake: Add chip_operations structure to enable bus scans

[Alexandru Gagniuc]

Alexandru Gagniuc ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13342

-gerrit

commit 23a9dc12ab34bcf2f0af952bc18fed618a89c8bb
Author: Alexandru Gagniuc 
Date:   Wed Nov 4 16:25:47 2015 -0800

soc/apollolake: Add chip_operations structure to enable bus scans

With the chip_operations structure in place, PCI enumeration now works
    in ramstage.

Change-Id: I9a39f4d6d7233a9cc696c71e96e0c17d4db3c925
    Signed-off-by: Alexandru Gagniuc 
---
 src/soc/intel/apollolake/Makefile.inc |  1 +
 src/soc/intel/apollolake/chip.c       | 52 +++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)

diff --git a/src/soc/intel/apollolake/Makefile.inc b/src/soc/intel/apollolake/Makefile.inc
index 7cddf5a..63c39b3 100644
--- a/src/soc/intel/apollolake/Makefile.inc
+++ b/src/soc/intel/apollolake/Makefile.inc
@@ -23,6 +23,7 @@ romstage-y += mmap_boot.c
 romstage-y += romstage/romstage.c
 romstage-y += uart_early.c

+ramstage-y += chip.c
 ramstage-y += cpu.c
 ramstage-y += gpio.c
 ramstage-y += memmap.c
diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c
new file mode 100644
index 0000000..2b6384a
--- /dev/null
+++ b/src/soc/intel/apollolake/chip.c
@@ -0,0 +1,52 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Intel Corp.
+ * (Written by Alexandru Gagniuc  for Intel Corp.)
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <cpu/cpu.h>
+#include <device/device.h>
+#include <device/pci.h>
+
+static struct device_operations pci_domain_ops = {
+	.read_resources = pci_domain_read_resources,
+	.set_resources = DEVICE_NOOP,
+	.enable_resources = NULL,
+	.init = NULL,
+	.scan_bus = pci_domain_scan_bus,
+	.ops_pci_bus = pci_bus_default_ops,
+};
+
+static void cpu_bus_init(device_t dev)
+{
+	initialize_cpus(dev->link_list);
+}
+
+static struct device_operations cpu_bus_ops = {
+	.read_resources = DEVICE_NOOP,
+	.set_resources = DEVICE_NOOP,
+	.enable_resources = DEVICE_NOOP,
+	.init = cpu_bus_init,
+	.scan_bus = 0,
+};
+
+static void enable_dev(device_t dev)
+{
+	/* Set the operations if it is a special bus type */
+	if (dev->path.type == DEVICE_PATH_DOMAIN) {
+		dev->ops = &pci_domain_ops;
+	} else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) {
+		dev->ops = &cpu_bus_ops;
+	}
+}
+
+struct chip_operations soc_intel_apollolake_ops = {
+	CHIP_NAME("Intel Apollolake SOC")
+	.enable_dev = &enable_dev,
+};