spike-riscv: Look for the CBFS in RAM

Change-Id: I98927a70adc45d9aca916bd985932b94287921de
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15285
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)

src/mainboard/emulation/qemu-riscv/Makefile.inc

@@ -15,11 +15,14 @@
 bootblock-y += bootblock.c
 bootblock-y += uart.c
 bootblock-y += qemu_util.c
+bootblock-y += rom_media.c
 romstage-y += romstage.c
 romstage-y += qemu_util.c
 romstage-y += uart.c
+romstage-y += rom_media.c
 ramstage-y += uart.c
 ramstage-y += qemu_util.c
+ramstage-y += rom_media.c
 
 bootblock-y += memlayout.ld
 romstage-y += memlayout.ld

src/mainboard/emulation/qemu-riscv/rom_media.c

@@ -0,0 +1,26 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * 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 <boot_device.h>
+
+/* This assumes that the CBFS resides at 0x0, which is true for the default
+ * configuration. */
+static const struct mem_region_device boot_dev =
+	MEM_REGION_DEV_RO_INIT(NULL, CONFIG_ROM_SIZE);
+
+const struct region_device *boot_device_ro(void)
+{
+	return &boot_dev.rdev;
+}

src/mainboard/emulation/spike-riscv/Makefile.inc

@@ -15,11 +15,14 @@
 bootblock-y += bootblock.c
 bootblock-y += uart.c
 bootblock-y += spike_util.c
+bootblock-y += rom_media.c
 romstage-y += romstage.c
 romstage-y += uart.c
 romstage-y += spike_util.c
+romstage-y += rom_media.c
 ramstage-y += uart.c
 ramstage-y += spike_util.c
+ramstage-y += rom_media.c
 
 bootblock-y += memlayout.ld
 romstage-y += memlayout.ld

src/mainboard/emulation/spike-riscv/rom_media.c

@@ -0,0 +1,30 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ * Copyright 2016 Jonathan Neuschäfer <j.neuschaefer@gmx.net>
+ *
+ * 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 <boot_device.h>
+
+/*
+ * 0x80000000 is this start of RAM. We currently need to load coreboot.rom into
+ * RAM on SPIKE, because SPIKE doesn't support loading custom code into the
+ * boot ROM.
+ */
+static const struct mem_region_device boot_dev =
+	MEM_REGION_DEV_RO_INIT(0x80000000, CONFIG_ROM_SIZE);
+
+const struct region_device *boot_device_ro(void)
+{
+	return &boot_dev.rdev;
+}