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efi_loader: Add basic EFI_TCG2_PROTOCOL support

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Since U-boot EFI implementation is getting richer it makes sense to
add support for EFI_TCG2_PROTOCOL taking advantage of any hardware TPM
available on the device.

This is the initial implementation of the protocol which only adds
support for GetCapability(). It's limited in the newer and safer
TPMv2 devices.

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Ilias Apalodimas
2020-11-11 11:18:11 +02:00
committed by Heinrich Schuchardt
parent 915e3ae568
commit c1c021052c
6 changed files with 645 additions and 0 deletions
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7
lib/efi_loader/efi_setup.c
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@@ -156,6 +156,13 @@ efi_status_t efi_init_obj_list(void)
if (ret != EFI_SUCCESS)
goto out;
}
if (IS_ENABLED(CONFIG_EFI_TCG2_PROTOCOL)) {
ret = efi_tcg2_register();
if (ret != EFI_SUCCESS)
goto out;
}
/* Initialize variable services */
ret = efi_init_variables();
if (ret != EFI_SUCCESS)