1 files changed, 284 insertions, 0 deletions
diff --git a/src/vendorcode/google/chromeos/chromeos.c b/src/vendorcode/google/chromeos/chromeos.c
new file mode 100644
index 0000000000..d2f62d7da7
--- /dev/null
+++ b/src/vendorcode/google/chromeos/chromeos.c
@@ -0,0 +1,284 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stddef.h>
+#include <string.h>
+#include "chromeos.h"
+#if CONFIG_VBOOT_VERIFY_FIRMWARE || CONFIG_VBOOT2_VERIFY_FIRMWARE
+#include "fmap.h"
+#include "vboot_handoff.h"
+#include <reset.h>
+#endif
+#include <boot/coreboot_tables.h>
+#include <cbfs.h>
+#include <cbmem.h>
+#include <console/console.h>
+
+#if CONFIG_VBOOT_VERIFY_FIRMWARE
+static int vboot_enable_developer(void)
+{
+	struct vboot_handoff *vbho;
+
+	vbho = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
+
+	if (vbho == NULL) {
+		printk(BIOS_ERR, "%s: Couldn't find vboot_handoff structure!\n",
+		        __func__);
+		return 0;
+	}
+
+	return !!(vbho->init_params.out_flags & VB_INIT_OUT_ENABLE_DEVELOPER);
+}
+
+static int vboot_enable_recovery(void)
+{
+	struct vboot_handoff *vbho;
+
+	vbho = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
+
+	if (vbho == NULL)
+		return 0;
+
+	return !!(vbho->init_params.out_flags & VB_INIT_OUT_ENABLE_RECOVERY);
+}
+#else
+static inline int vboot_enable_developer(void) { return 0; }
+static inline int vboot_enable_recovery(void) { return 0; }
+#endif
+
+int developer_mode_enabled(void)
+{
+	return get_developer_mode_switch() || vboot_enable_developer();
+}
+
+int recovery_mode_enabled(void)
+{
+	/*
+	 * This is called in multiple places and has to detect
+	 * recovery mode triggered from the EC and via shared
+	 * recovery reason set with crossystem.
+	 *
+	 * If shared recovery reason is set:
+	 * - before VbInit then get_recovery_mode_from_vbnv() is true
+	 * - after VbInit then vboot_enable_recovery() is true
+	 *
+	 * Otherwise the mainboard handler for get_recovery_mode_switch()
+	 * will detect recovery mode initiated by the EC.
+	 */
+	return get_recovery_mode_switch() || get_recovery_mode_from_vbnv() ||
+		vboot_enable_recovery();
+}
+
+int __attribute__((weak)) clear_recovery_mode_switch(void)
+{
+	// Can be implemented by a mainboard
+	return 0;
+}
+
+int vboot_skip_display_init(void)
+{
+#if CONFIG_VBOOT_VERIFY_FIRMWARE
+	struct vboot_handoff *vbho;
+
+	vbho = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
+
+	if (vbho == NULL)
+		return 0;
+
+	return !(vbho->init_params.out_flags & VB_INIT_OUT_ENABLE_DISPLAY);
+#else
+	return 0;
+#endif
+}
+
+#ifdef __PRE_RAM__
+void __attribute__((weak)) save_chromeos_gpios(void)
+{
+	// Can be implemented by a mainboard
+}
+
+int __attribute((weak)) vboot_get_sw_write_protect(void)
+{
+	// Can be implemented by a platform / mainboard
+	return 0;
+}
+#endif
+
+#if CONFIG_VBOOT_VERIFY_FIRMWARE || CONFIG_VBOOT2_VERIFY_FIRMWARE
+void vboot_locate_region(const char *name, struct vboot_region *region)
+{
+	region->size = find_fmap_entry(name, (void **)&region->offset_addr);
+}
+
+void *vboot_get_region(uintptr_t offset_addr, size_t size, void *dest)
+{
+	if (IS_ENABLED(CONFIG_SPI_FLASH_MEMORY_MAPPED)) {
+		if (dest != NULL)
+			return memcpy(dest, (void *)offset_addr, size);
+		else
+			return (void *)offset_addr;
+	} else {
+		struct cbfs_media default_media, *media = &default_media;
+		void *cache;
+
+		init_default_cbfs_media(media);
+		media->open(media);
+		if (dest != NULL) {
+			cache = dest;
+			if (media->read(media, dest, offset_addr, size) != size)
+				cache = NULL;
+		} else {
+			cache = media->map(media, offset_addr, size);
+			if (cache == CBFS_MEDIA_INVALID_MAP_ADDRESS)
+				cache = NULL;
+		}
+		media->close(media);
+		return cache;
+	}
+}
+
+int vboot_get_handoff_info(void **addr, uint32_t *size)
+{
+	struct vboot_handoff *vboot_handoff;
+
+	vboot_handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
+
+	if (vboot_handoff == NULL)
+		return -1;
+
+	*addr = vboot_handoff;
+	*size = sizeof(*vboot_handoff);
+	return 0;
+}
+
+/* This will leak a mapping of a fw region */
+struct vboot_components *vboot_locate_components(struct vboot_region *region)
+{
+	size_t req_size;
+	struct vboot_components *vbc;
+
+	req_size = sizeof(*region);
+	req_size += sizeof(struct vboot_component_entry) *
+			MAX_PARSED_FW_COMPONENTS;
+
+	vbc = vboot_get_region(region->offset_addr, req_size, NULL);
+	if (vbc && vbc->num_components > MAX_PARSED_FW_COMPONENTS)
+		vbc = NULL;
+
+	return vbc;
+}
+
+void *vboot_get_payload(int *len)
+{
+	struct vboot_handoff *vboot_handoff;
+	struct firmware_component *fwc;
+
+	vboot_handoff = cbmem_find(CBMEM_ID_VBOOT_HANDOFF);
+
+	if (vboot_handoff == NULL)
+		return NULL;
+
+	if (CONFIG_VBOOT_BOOT_LOADER_INDEX >= MAX_PARSED_FW_COMPONENTS) {
+		printk(BIOS_ERR, "Invalid boot loader index: %d\n",
+		       CONFIG_VBOOT_BOOT_LOADER_INDEX);
+		return NULL;
+	}
+
+	fwc = &vboot_handoff->components[CONFIG_VBOOT_BOOT_LOADER_INDEX];
+
+	/* If payload size is zero fall back to cbfs path. */
+	if (fwc->size == 0)
+		return NULL;
+
+	if (len != NULL)
+		*len = fwc->size;
+
+	printk(BIOS_DEBUG, "Booting 0x%x byte verified payload at 0x%08x.\n",
+	       fwc->size, fwc->address);
+
+	/* This will leak a mapping. */
+	return vboot_get_region(fwc->address, fwc->size, NULL);
+}
+#endif
+
+#if CONFIG_VBOOT2_VERIFY_FIRMWARE
+void *vboot_load_stage(int stage_index,
+		       struct vboot_region *fw_main,
+		       struct vboot_components *fw_info)
+{
+	struct cbfs_stage *stage;
+	uint32_t fc_addr;
+	uint32_t fc_size;
+
+	if (stage_index >= fw_info->num_components) {
+		printk(BIOS_INFO, "invalid stage index\n");
+		return NULL;
+	}
+
+	fc_addr = fw_main->offset_addr + fw_info->entries[stage_index].offset;
+	fc_size = fw_info->entries[stage_index].size;
+	if (fc_size == 0 ||
+	    fc_addr + fc_size > fw_main->offset_addr + fw_main->size) {
+		printk(BIOS_INFO, "invalid stage address or size\n");
+		return NULL;
+	}
+
+	/* Loading to cbfs cache. This stage data must be retained until it's
+	 * decompressed. */
+	stage = vboot_get_region(fc_addr, fc_size, NULL);
+
+	if (stage == NULL) {
+		printk(BIOS_INFO, "failed to load a stage\n");
+		return NULL;
+	}
+
+	/* Stages rely the below clearing so that the bss is initialized. */
+	memset((void *) (uintptr_t)stage->load, 0, stage->memlen);
+
+	if (cbfs_decompress(stage->compression,
+			    (unsigned char *)stage + sizeof(*stage),
+			    (void *) (uintptr_t) stage->load,
+			    stage->len)) {
+		printk(BIOS_INFO, "failed to decompress a stage\n");
+		return NULL;
+	}
+
+	return (void *)(uintptr_t)stage->entry;
+}
+
+struct vb2_working_data * const vboot_get_working_data(void)
+{
+	return (struct vb2_working_data *)CONFIG_VBOOT_WORK_BUFFER_ADDRESS;
+}
+
+int vboot_is_slot_selected(struct vb2_working_data *wd)
+{
+	return wd->selected_region.size > 0;
+}
+
+int vboot_is_readonly_path(struct vb2_working_data *wd)
+{
+	return wd->selected_region.size == 0;
+}
+
+void vboot_reboot(void)
+{
+	hard_reset();
+}
+#endif