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bootm: Support boot measurement

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Add a configuration option to measure the boot through the bootm
function. Add the measurement state to the booti and bootz paths
as well.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Ilias: Added some info on Kconfig explaining this is when booting !EFI
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Eddie James 2023-10-24 10:43:50 -05:00 • committed by Ilias Apalodimas
parent 97707f12fd
commit dec166d6b2
7 changed files with 122 additions and 0 deletions
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11
include/bootm.h
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@ -56,6 +56,17 @@ ulong bootm_disable_interrupts(void);
int bootm_find_images(int flag, int argc, char *const argv[], ulong start,
ulong size);
/*
* Measure the boot images. Measurement is the process of hashing some binary
* data and storing it into secure memory, i.e. TPM PCRs. In addition, each
* measurement is logged into the platform event log such that the operating
* system can access it and perform attestation of the boot.
*
* @images: The structure containing the various images to boot (linux,
* initrd, dts, etc.)
*/
int bootm_measure(struct bootm_headers *images);
int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[], int states, struct bootm_headers *images,
int boot_progress);