armv7/snow: add CPU and RAM resources via allocator

This adds necessary device operations to add CPU and RAM resources.

Change-Id: Ief8f66627ef37f4fa786bfc3f7899529d3e5b037
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2419
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

2 files changed, 62 insertions, 0 deletions

diff --git a/src/cpu/samsung/exynos5250/Makefile.inc b/src/cpu/samsung/exynos5250/Makefile.inc
index 10c071a702..c9a9341641 100644
--- a/src/cpu/samsung/exynos5250/Makefile.inc
+++ b/src/cpu/samsung/exynos5250/Makefile.inc
@@ -27,6 +27,7 @@ ramstage-y += pinmux.c
 ramstage-y += power.c
 ramstage-y += soc.c
 ramstage-$(CONFIG_CONSOLE_SERIAL_UART) += uart.c
+ramstage-y += cpu.c
 
 #ramstage-$(CONFIG_SATA_AHCI) += sata.c
 
diff --git a/src/cpu/samsung/exynos5250/cpu.c b/src/cpu/samsung/exynos5250/cpu.c
new file mode 100644
index 0000000000..0a49e1edc9
--- /dev/null
+++ b/src/cpu/samsung/exynos5250/cpu.c
@@ -0,0 +1,61 @@
+#include <console/console.h>
+#include <device/device.h>
+
+#define RAM_BASE ((CONFIG_SYS_SDRAM_BASE >> 10) + (CONFIG_COREBOOT_ROMSIZE_KB))
+#define RAM_SIZE (((CONFIG_DRAM_SIZE_MB << 10UL) * CONFIG_NR_DRAM_BANKS) \
+		- CONFIG_COREBOOT_ROMSIZE_KB)
+
+static void domain_read_resources(device_t dev)
+{
+	ram_resource(dev, 0, RAM_BASE, RAM_SIZE);
+}
+
+static void domain_set_resources(device_t dev)
+{
+	assign_resources(dev->link_list);
+}
+
+static unsigned int domain_scan_bus(device_t dev, unsigned int max)
+{
+	return max;
+}
+
+
+static struct device_operations domain_ops = {
+	.read_resources   = domain_read_resources,
+	.set_resources    = domain_set_resources,
+	.enable_resources = NULL,
+	.init             = NULL,
+	.scan_bus         = domain_scan_bus,
+};
+
+static void cpu_init(device_t dev)
+{
+}
+
+static void cpu_noop(device_t dev)
+{
+}
+
+static struct device_operations cpu_ops = {
+	.read_resources   = cpu_noop,
+	.set_resources    = cpu_noop,
+	.enable_resources = cpu_noop,
+	.init             = cpu_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 = &domain_ops;
+	} else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) {
+		dev->ops = &cpu_ops;
+	}
+}
+
+struct chip_operations cpu_samsung_exynos5250_ops = {
+	CHIP_NAME("CPU Samsung Exynos 5250")
+	.enable_dev = enable_dev,
+};