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/*
* 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
*/
#ifndef __CHROMEOS_H__
#define __CHROMEOS_H__
#include <stddef.h>
#include <stdint.h>
#include <bootmode.h>
/* functions implemented in vbnv.c: */
int get_recovery_mode_from_vbnv(void);
int vboot_wants_oprom(void);
void read_vbnv(uint8_t *vbnv_copy);
void save_vbnv(const uint8_t *vbnv_copy);
#if CONFIG_CHROMEOS
/* functions implemented in vboot.c */
void init_chromeos(int bootmode);
/* functions implemented in elog.c */
void elog_add_boot_reason(void);
#else
static inline void init_chromeos(int bootmode) { }
static inline void elog_add_boot_reason(void) { return; }
#endif /* CONFIG_CHROMEOS */
struct romstage_handoff;
/* TODO(shawnn): Remove these CONFIGs and define default weak functions
* that can be overridden in the platform / MB code. */
#if CONFIG_VBOOT_VERIFY_FIRMWARE || CONFIG_VBOOT2_VERIFY_FIRMWARE
struct vboot_region {
uintptr_t offset_addr;
int32_t size;
};
/*
* The vboot handoff structure keeps track of a maximum number of firmware
* components in the verfieid RW area of flash. This is not a restriction on
* the number of components packed in a firmware block. It's only the maximum
* number of parsed firmware components (address and size) included in the
* handoff structure.
*/
#define MAX_PARSED_FW_COMPONENTS 5
/* The FW areas consist of multiple components. At the beginning of
* each area is the number of total compoments as well as the size and
* offset for each component. One needs to caculate the total size of the
* signed firmware region based off of the embedded metadata. */
struct vboot_component_entry {
uint32_t offset;
uint32_t size;
} __attribute__((packed));
struct vboot_components {
uint32_t num_components;
struct vboot_component_entry entries[0];
} __attribute__((packed));
void vboot_locate_region(const char *name, struct vboot_region *region);
struct vboot_components *vboot_locate_components(struct vboot_region *region);
/*
* This is a dual purpose routine. If dest is non-NULL the region at
* offset_addr will be read into the area pointed to by dest. If dest
* is NULL,the region will be mapped to a memory location. NULL is
* returned on error else the location of the requested region.
*/
void *vboot_get_region(uintptr_t offset_addr, size_t size, void *dest);
/* Returns 0 on success < 0 on error. */
int vboot_get_handoff_info(void **addr, uint32_t *size);
int vboot_enable_developer(void);
int vboot_enable_recovery(void);
int vboot_skip_display_init(void);
#else
static inline void vboot_verify_firmware(struct romstage_handoff *h) {}
static inline void *vboot_get_payload(int *len) { return NULL; }
static inline int vboot_get_handoff_info(void **addr, uint32_t *size)
{
return -1;
}
static inline int vboot_skip_display_init(void) { return 0; }
#endif /* CONFIG_VBOOT_VERIFY_FIRMWARE || CONFIG_VBOOT2_VERIFY_FIRMWARE */
int vboot_get_sw_write_protect(void);
#include "gnvs.h"
struct device;
#if CONFIG_CHROMEOS_RAMOOPS
void chromeos_ram_oops_init(chromeos_acpi_t *chromeos);
#if CONFIG_CHROMEOS_RAMOOPS_DYNAMIC
static inline void chromeos_reserve_ram_oops(struct device *dev, int idx) {}
#else /* CONFIG_CHROMEOS_RAMOOPS_DYNAMIC */
void chromeos_reserve_ram_oops(struct device *dev, int idx);
#endif /* CONFIG_CHROMEOS_RAMOOPS_DYNAMIC */
#else /* !CONFIG_CHROMEOS_RAMOOPS */
static inline void chromeos_ram_oops_init(chromeos_acpi_t *chromeos) {}
static inline void chromeos_reserve_ram_oops(struct device *dev, int idx) {}
#endif /* CONFIG_CHROMEOS_RAMOOPS */
void vboot2_verify_firmware(void);
#if CONFIG_VBOOT2_VERIFY_FIRMWARE
void *vboot_load_ramstage(void);
void verstage_main(void);
void *vboot_load_stage(int stage_index,
struct vboot_region *fw_main,
struct vboot_components *fw_info);
void vboot_reboot(void);
/*
* this is placed at the start of the vboot work buffer. selected_region is used
* for the verstage to return the location of the selected slot. buffer is used
* by the vboot2 core. Keep the struct cpu architecture agnostic as it crosses
* stage boundaries.
*/
struct vb2_working_data {
uint32_t selected_region_offset;
uint32_t selected_region_size;
uint64_t buffer_size;
uint64_t buffer;
};
struct vb2_working_data * const vboot_get_working_data(void);
static inline void vb2_get_selected_region(struct vb2_working_data *wd,
struct vboot_region *region)
{
region->offset_addr = wd->selected_region_offset;
region->size = wd->selected_region_size;
}
static inline void vb2_set_selected_region(struct vb2_working_data *wd,
struct vboot_region *region)
{
wd->selected_region_offset = region->offset_addr;
wd->selected_region_size = region->size;
}
static inline int vboot_is_slot_selected(struct vb2_working_data *wd)
{
return wd->selected_region_size > 0;
}
static inline int vboot_is_readonly_path(struct vb2_working_data *wd)
{
return wd->selected_region_size == 0;
}
#endif /* CONFIG_VBOOT2_VERIFY_FIRMWARE */
#endif
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