danube: prepare SOC directory for urara

These modules are necessary to resolve external names when building
the board image. These are just skeletons for now which will be filled
later.

BUG=chrome-os-partner:31438
TEST=when config is enabled, emerge-urara coreboot succeeds. more
     extensive testing to come later

Change-Id: I0fcb5d33187172ecac77041425402b33e89e8944
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 94ec79b0ab872f5c5fe7db5bef5fdabf77d6b3b6
Original-Change-Id: I69cc178976a910ebf8031ed9ac9ad67b4cc0878a
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/215678
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8763
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/soc/imgtec/danube/Kconfig

@@ -20,7 +20,7 @@
 #
 
 config CPU_IMGTEC_DANUBE
-	select CPU_MIPS32R2
+	select CPU_MIPS
 	select DYNAMIC_CBMEM
 	select HAVE_UART_MEMORY_MAPPED
 	select HAVE_UART_SPECIAL

src/soc/imgtec/danube/Makefile.inc

@@ -19,14 +19,24 @@
 # MA 02110-1301 USA
 #
 
+# We enable CBFS_SPI_WRAPPER for Danuibe targets.
+bootblock-y += spi.c
+romstage-y += spi.c
+ramstage-y += spi.c
+
 ifeq ($(CONFIG_CONSOLE_SERIAL_UART),y)
 bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c
 romstage-y += uart.c
 ramstage-y += uart.c
 endif
 
-romstage-y += cbmem.c
+bootblock-y += timestamp.c
+
 ramstage-y += cbmem.c
+ramstage-y += timestamp.c
+
+romstage-y += cbmem.c
+romstage-y += timestamp.c
 
 # Generate the actual coreboot bootblock code
 $(objcbfs)/bootblock.raw: $(objcbfs)/bootblock.elf
@@ -38,3 +48,4 @@ $(objcbfs)/bootblock.raw: $(objcbfs)/bootblock.elf
 $(objcbfs)/bootblock.bin: $(objcbfs)/bootblock.raw $(BIMGTOOL)
 	@printf "    BIMGTOOL   $(subst $(obj)/,,$(@))\n"
 	$(BIMGTOOL) $< $@ $(CONFIG_BOOTBLOCK_BASE)
+

src/soc/imgtec/danube/spi.c

@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 <stddef.h>
+#include <spi-generic.h>
+
+struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs)
+{
+	return NULL;
+}
+
+int spi_claim_bus(struct spi_slave *slave)
+{
+	return 0;
+}
+
+void spi_release_bus(struct spi_slave *slave)
+{
+}
+
+int spi_xfer(struct spi_slave *slave, const void *dout,
+	     unsigned out_bytes, void *din, unsigned in_bytes)
+{
+	return 0;
+}

src/soc/imgtec/danube/timestamp.c

@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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 <timestamp.h>
+
+uint64_t timestamp_get(void)
+{
+	return 0;
+}