drivers/crb: Add support for PTT
When we use Intel Platform Trust Technologies, we need to verify that the enable bit is set before we use the integrated TPM. Change-Id: I3b262a5d5253648fb96fb1fd9ba3995f92755bb1 Signed-off-by: Christian Walter <christian.walter@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34381 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Reviewed-by: Julius Werner <jwerner@chromium.org>
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@ -16,6 +16,7 @@
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#include <security/tpm/tis.h>
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#include <arch/acpigen.h>
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#include <device/device.h>
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#include <drivers/intel/ptt/ptt.h>
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#include "tpm.h"
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#include "chip.h"
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@ -49,6 +50,14 @@ int tis_open(void)
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return -1;
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}
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if (CONFIG(HAVE_INTEL_PTT)) {
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if (!ptt_active()) {
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printk(BIOS_ERR, "%s: Intel PTT is not active.\n", __func__);
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return -1;
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}
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printk(BIOS_DEBUG, "%s: Intel PTT is active.\n", __func__);
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}
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return 0;
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}
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