#include <assert.h>
#include <cbfs.h>
#include <console/console.h>
#include <delay.h>
#include <ec/google/chromeec/ec.h>
#include <halt.h>
#include <security/vboot/misc.h>
#include <security/vboot/vbnv.h>
#include <security/vboot/vboot_common.h>
#include <timer.h>
#include <timestamp.h>
#include <vb2_api.h>

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Macros
#define	_EC_FILENAME(select, suffix) (select == VB_SELECT_FIRMWARE_READONLY ? "ecro" suffix : "ecrw" suffix)

#define	EC_IMAGE_FILENAME(select) _EC_FILENAME(select, "")

#define	EC_HASH_FILENAME(select) _EC_FILENAME(select, ".hash")

#define	CROS_EC_HASH_CHECK_DELAY_MS 10

#define	CROS_EC_HASH_TIMEOUT_MS 2000

#define	LIMIT_POWER_WAIT_TIMEOUT_MS 3000

#define	LIMIT_POWER_POLL_SLEEP_MS 10

#define	CROS_EC_SYSJUMP_TIMEOUT_MS 3000

Functions
void	vboot_sync_ec (void)

static uint32_t	get_vboot_hash_offset (enum vb2_firmware_selection select)

static vb2_error_t	ec_hash_image (enum vb2_firmware_selection select, const uint8_t *hash, int hash_size)

static vb2_error_t	ec_protect_flash (enum vb2_firmware_selection select, int enable)

static enum ec_flash_region	vboot_to_ec_region (enum vb2_firmware_selection select)

static vb2_error_t	ec_flash_write (void *image, uint32_t region_offset, int image_size)

static vb2_error_t	ec_update_image (enum vb2_firmware_selection select)

static vb2_error_t	ec_get_expected_hash (enum vb2_firmware_selection select, const uint8_t *hash, int hash_size)

vb2_error_t	vb2ex_commit_data (struct vb2_context *ctx)

vb2_error_t	vb2ex_ec_running_rw (int *in_rw)

vb2_error_t	vb2ex_ec_vboot_done (struct vb2_context *ctx)

vb2_error_t	vb2ex_ec_battery_cutoff (void)

vb2_error_t	vb2ex_ec_hash_image (enum vb2_firmware_selection select, const uint8_t *hash, int hash_size)

vb2_error_t	vb2ex_ec_protect (enum vb2_firmware_selection select)

vb2_error_t	vb2ex_ec_get_expected_image_hash (enum vb2_firmware_selection select, const uint8_t *hash, int hash_size)

vb2_error_t	vb2ex_ec_disable_jump (void)

vb2_error_t	vb2ex_ec_update_image (enum vb2_firmware_selection select)

vb2_error_t	vb2ex_ec_jump_to_rw (void)

Macro Definition Documentation

◆ _EC_FILENAME

#define _EC_FILENAME	(	select,
		suffix
	)	(select == VB_SELECT_FIRMWARE_READONLY ? "ecro" suffix : "ecrw" suffix)

Definition at line 16 of file ec_sync.c.

◆ CROS_EC_HASH_CHECK_DELAY_MS

#define CROS_EC_HASH_CHECK_DELAY_MS 10

Definition at line 22 of file ec_sync.c.

◆ CROS_EC_HASH_TIMEOUT_MS

#define CROS_EC_HASH_TIMEOUT_MS 2000

Definition at line 24 of file ec_sync.c.

◆ CROS_EC_SYSJUMP_TIMEOUT_MS

#define CROS_EC_SYSJUMP_TIMEOUT_MS 3000

Definition at line 32 of file ec_sync.c.

◆ EC_HASH_FILENAME

#define EC_HASH_FILENAME ( select ) _EC_FILENAME(select, ".hash")

Definition at line 19 of file ec_sync.c.

◆ EC_IMAGE_FILENAME

#define EC_IMAGE_FILENAME ( select ) _EC_FILENAME(select, "")

Definition at line 18 of file ec_sync.c.

◆ LIMIT_POWER_POLL_SLEEP_MS

#define LIMIT_POWER_POLL_SLEEP_MS 10

Definition at line 29 of file ec_sync.c.

◆ LIMIT_POWER_WAIT_TIMEOUT_MS

#define LIMIT_POWER_WAIT_TIMEOUT_MS 3000

Definition at line 27 of file ec_sync.c.

Function Documentation

◆ ec_flash_write()

static vb2_error_t ec_flash_write	(	void *	image,
		uint32_t	region_offset,
		int	image_size
	)

static

Definition at line 245 of file ec_sync.c.

References alloca, BIOS_ERR, google_chromeec_flash_info(), google_chromeec_flash_write_block(), google_chromeec_get_protocol_info(), ec_response_get_protocol_info::max_request_packet_size, memcpy(), MIN, params, printk, region_offset(), and ec_response_flash_info::write_block_size.

Referenced by ec_update_image().

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◆ ec_get_expected_hash()

static vb2_error_t ec_get_expected_hash	(	enum vb2_firmware_selection	select,
		const uint8_t **	hash,
		int *	hash_size
	)

static

Definition at line 376 of file ec_sync.c.

References cbfs_map(), EC_HASH_FILENAME, NULL, and ec_params_flash_write::size.

Referenced by vb2ex_ec_get_expected_image_hash().

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◆ ec_hash_image()

static vb2_error_t ec_hash_image	(	enum vb2_firmware_selection	select,
		const uint8_t **	hash,
		int *	hash_size
	)

static

Definition at line 107 of file ec_sync.c.

References BIOS_ERR, BIOS_INFO, BIOS_WARNING, CROS_EC_HASH_CHECK_DELAY_MS, CROS_EC_HASH_TIMEOUT_MS, ec_response_vboot_hash::digest_size, EC_VBOOT_HASH_STATUS_BUSY, EC_VBOOT_HASH_STATUS_DONE, EC_VBOOT_HASH_STATUS_NONE, EC_VBOOT_HASH_TYPE_SHA256, get_vboot_hash_offset(), google_chromeec_get_vboot_hash(), google_chromeec_start_vboot_hash(), ec_response_vboot_hash::hash_digest, ec_response_vboot_hash::hash_type, mdelay(), printk, ec_response_vboot_hash::size, ec_response_vboot_hash::status, stopwatch_duration_usecs(), stopwatch_expired(), stopwatch_init_msecs_expire(), timestamp_add_now(), and TS_EC_HASH_READY.

Referenced by vb2ex_ec_hash_image().

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◆ ec_protect_flash()

static vb2_error_t ec_protect_flash	(	enum vb2_firmware_selection	select,
		int	enable
	)

static

Definition at line 189 of file ec_sync.c.

References EC_FLASH_PROTECT_ALL_AT_BOOT, EC_FLASH_PROTECT_ALL_NOW, EC_FLASH_PROTECT_GPIO_ASSERTED, EC_FLASH_PROTECT_RO_AT_BOOT, EC_FLASH_PROTECT_RO_NOW, ec_response_flash_protect::flags, google_chromeec_flash_protect(), and mask.

Referenced by ec_update_image(), and vb2ex_ec_protect().

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◆ ec_update_image()

static vb2_error_t ec_update_image ( enum vb2_firmware_selection select )

static

Definition at line 325 of file ec_sync.c.

References cbfs_map(), cbfs_unmap(), ec_flash_write(), EC_IMAGE_FILENAME, ec_protect_flash(), google_chromeec_efs_verify(), google_chromeec_flash_erase(), google_chromeec_flash_region_info(), region_offset(), and vboot_to_ec_region().

Referenced by vb2ex_ec_update_image().

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◆ get_vboot_hash_offset()

static uint32_t get_vboot_hash_offset ( enum vb2_firmware_selection select )

static

Definition at line 91 of file ec_sync.c.

References EC_VBOOT_HASH_OFFSET_ACTIVE, EC_VBOOT_HASH_OFFSET_RO, and EC_VBOOT_HASH_OFFSET_UPDATE.

Referenced by ec_hash_image().

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◆ vb2ex_commit_data()

vb2_error_t vb2ex_commit_data ( struct vb2_context * ctx )

Definition at line 402 of file ec_sync.c.

References save_vbnv().

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◆ vb2ex_ec_battery_cutoff()

vb2_error_t vb2ex_ec_battery_cutoff ( void )

Definition at line 473 of file ec_sync.c.

References EC_BATTERY_CUTOFF_FLAG_AT_SHUTDOWN, and google_chromeec_battery_cutoff().

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◆ vb2ex_ec_disable_jump()

vb2_error_t vb2ex_ec_disable_jump ( void )

Definition at line 511 of file ec_sync.c.

References EC_REBOOT_DISABLE_JUMP, and google_chromeec_reboot().

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◆ vb2ex_ec_get_expected_image_hash()

vb2_error_t vb2ex_ec_get_expected_image_hash	(	enum vb2_firmware_selection	select,
		const uint8_t **	hash,
		int *	hash_size
	)

Definition at line 501 of file ec_sync.c.

References ec_get_expected_hash().

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◆ vb2ex_ec_hash_image()

vb2_error_t vb2ex_ec_hash_image	(	enum vb2_firmware_selection	select,
		const uint8_t **	hash,
		int *	hash_size
	)

Definition at line 484 of file ec_sync.c.

References ec_hash_image().

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◆ vb2ex_ec_jump_to_rw()

vb2_error_t vb2ex_ec_jump_to_rw ( void )

Definition at line 530 of file ec_sync.c.

References BIOS_ERR, BIOS_INFO, CROS_EC_SYSJUMP_TIMEOUT_MS, EC_REBOOT_JUMP_RW, google_chromeec_hello(), google_chromeec_reboot(), mdelay(), printk, stopwatch_duration_usecs(), stopwatch_expired(), and stopwatch_init_msecs_expire().

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◆ vb2ex_ec_protect()

vb2_error_t vb2ex_ec_protect ( enum vb2_firmware_selection select )

Definition at line 493 of file ec_sync.c.

References ec_protect_flash().

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◆ vb2ex_ec_running_rw()

vb2_error_t vb2ex_ec_running_rw ( int * in_rw )

Definition at line 411 of file ec_sync.c.

References google_ec_running_ro().

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◆ vb2ex_ec_update_image()

vb2_error_t vb2ex_ec_update_image ( enum vb2_firmware_selection select )

Definition at line 522 of file ec_sync.c.

References ec_update_image().

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◆ vb2ex_ec_vboot_done()

vb2_error_t vb2ex_ec_vboot_done ( struct vb2_context * ctx )

Definition at line 420 of file ec_sync.c.

References BIOS_ERR, BIOS_INFO, BIOS_SPEW, google_chromeec_read_limit_power_request(), LIMIT_POWER_POLL_SLEEP_MS, LIMIT_POWER_WAIT_TIMEOUT_MS, mdelay(), printk, stopwatch_duration_usecs(), stopwatch_expired(), stopwatch_init_msecs_expire(), timestamp_add_now(), and TS_EC_POWER_LIMIT_WAIT.

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◆ vboot_sync_ec()

void vboot_sync_ec ( void )

Definition at line 40 of file ec_sync.c.

References BIOS_EMERG, BIOS_ERR, BIOS_INFO, EC_REBOOT_COLD, EC_REBOOT_FLAG_SWITCH_RW_SLOT, google_chromeec_reboot(), halt(), printk, timestamp_add_now(), TS_EC_SYNC_END, TS_EC_SYNC_START, vboot_get_context(), vboot_reboot(), and vboot_save_data().

Referenced by romstage_main().

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◆ vboot_to_ec_region()

static enum ec_flash_region vboot_to_ec_region ( enum vb2_firmware_selection select )

static

Definition at line 189 of file ec_sync.c.

Referenced by ec_update_image().

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Macros

Functions

Macro Definition Documentation

◆ _EC_FILENAME

◆ CROS_EC_HASH_CHECK_DELAY_MS

◆ CROS_EC_HASH_TIMEOUT_MS

◆ CROS_EC_SYSJUMP_TIMEOUT_MS

◆ EC_HASH_FILENAME

◆ EC_IMAGE_FILENAME

◆ LIMIT_POWER_POLL_SLEEP_MS

◆ LIMIT_POWER_WAIT_TIMEOUT_MS

Function Documentation

◆ ec_flash_write()

◆ ec_get_expected_hash()

◆ ec_hash_image()

◆ ec_protect_flash()

◆ ec_update_image()

◆ get_vboot_hash_offset()

◆ vb2ex_commit_data()

◆ vb2ex_ec_battery_cutoff()

◆ vb2ex_ec_disable_jump()

◆ vb2ex_ec_get_expected_image_hash()

◆ vb2ex_ec_hash_image()

◆ vb2ex_ec_jump_to_rw()

◆ vb2ex_ec_protect()

◆ vb2ex_ec_running_rw()

◆ vb2ex_ec_update_image()

◆ vb2ex_ec_vboot_done()

◆ vboot_sync_ec()

◆ vboot_to_ec_region()