d9152ea75e
This provides a basic prototype for boot control. Some documentation is in boot/bootctl/README.rst
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Implementation of measurement of loaded images and the like
|
|
*
|
|
* Copyright 2025 Canonical Ltd
|
|
* Written by Simon Glass <simon.glass@canonical.com>
|
|
*/
|
|
|
|
#ifndef __bootctl_measure_h
|
|
#define __bootctl_measure_h
|
|
|
|
#include <alist.h>
|
|
|
|
struct osinfo;
|
|
struct udevice;
|
|
|
|
/**
|
|
* enum measure_t - Types of measurement supported
|
|
*
|
|
* @BCMEAST_OS: OS image loaded from storage
|
|
* @BCMEAST_INITRD: Initial ramdisk loaded from storage
|
|
* @BCMEAST_CMDLINE: Command-line arguments constructed for the OS
|
|
* @BCMEAST_FDT: Flattened device tree for use by the OS
|
|
*/
|
|
enum measure_t {
|
|
BCMEAST_IMAGE,
|
|
BCMEAST_CMDLINE,
|
|
BCMEAST_FDT,
|
|
};
|
|
|
|
/**
|
|
* struct measure_info - Information about a particular measurement
|
|
*
|
|
* TODO: Add more details about the measurement
|
|
*
|
|
* @img: Image which was measured
|
|
*/
|
|
struct measure_info {
|
|
const struct bootflow_img *img;
|
|
};
|
|
|
|
/**
|
|
* struct bc_measure_ops - Operations for measurement, e.g. with a TPM
|
|
*/
|
|
struct bc_measure_ops {
|
|
/**
|
|
* start() - Start up ready for measurement
|
|
*
|
|
* Sets up the TPM log and starts the TPM
|
|
*
|
|
* @dev: Device to access
|
|
* Return: 0 if OK, or -ve error code
|
|
*/
|
|
int (*start)(struct udevice *dev);
|
|
|
|
/**
|
|
* process() - Measurement of images, etc.
|
|
*
|
|
* Process the required measurements to produce results
|
|
*
|
|
* @dev: Device to access
|
|
* @osinfo: OS being booting
|
|
* @result: Inits and returns a list of struct measure_info records
|
|
* Return: 0 if OK, or -ve error code
|
|
*/
|
|
int (*process)(struct udevice *dev, const struct osinfo *osinfo,
|
|
struct alist *result);
|
|
};
|
|
|
|
#define bc_measure_get_ops(dev) ((struct bc_measure_ops *)(dev)->driver->ops)
|
|
|
|
/**
|
|
* bc_measure_start() - Start up ready for measurement
|
|
*
|
|
* Sets up the TPM log and starts the TPM
|
|
*
|
|
* @dev: Device to access
|
|
* Return: 0 if OK, or -ve error code
|
|
*/
|
|
int bc_measure_start(struct udevice *dev);
|
|
|
|
/**
|
|
* bc_measure_process() - Measurement of images, etc.
|
|
*
|
|
* Processes the required measurements to produce results
|
|
*
|
|
* @dev: Device to access
|
|
* @osinfo: OS being booting
|
|
* @result: Inits and returns a list of struct measure_info records
|
|
* Return: 0 if OK, or -ve error code
|
|
*/
|
|
int bc_measure_process(struct udevice *dev, const struct osinfo *osinfo,
|
|
struct alist *result);
|
|
|
|
#endif
|