a4bf0b7cd1
Certain TPMs (observed on Infineon SLB9635 installed on revolve 810 g1) seem to need some delay between tis_wait_valid() and tis_has_valid_data(), or tis_has_valid_data() may invalidly return 0, ending the loop immaturely with some bytes left unread, and fail to pass the check below, causing the current command not finalized by tis_command_ready(), and blocking any later tis_wait_ready(). This time the added delay is controlled by a Kconfig option TPM_RDRESP_NEED_DELAY. Change-Id: Ic2a2f252e72a0bbce51e2863f8e46647b1570ba5 Signed-off-by: Bill XIE <persmule@gmail.com> Reviewed-on: https://review.coreboot.org/25322 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
58 lines
1.4 KiB
Plaintext
58 lines
1.4 KiB
Plaintext
config LPC_TPM
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bool "Enable TPM support"
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depends on MAINBOARD_HAS_LPC_TPM
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default n
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help
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Enable this option to enable LPC TPM support in coreboot.
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If unsure, say N.
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config TPM_TIS_BASE_ADDRESS
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hex
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default 0xfed40000
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depends on LPC_TPM
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help
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This can be used to adjust the TPM memory base address.
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The default is specified by the TCG PC Client Specific TPM
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Interface Specification 1.2 and should not be changed unless
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the TPM being used does not conform to TPM TIS 1.2.
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config TPM_PIRQ
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hex
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default 0x0
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depends on LPC_TPM
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help
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This can be used to specify a PIRQ to use instead of SERIRQ,
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which is needed for SPI TPM interrupt support on x86.
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config TPM_INIT_FAILURE_IS_FATAL
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bool
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default n
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depends on LPC_TPM
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help
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What to do if TPM init failed. If true, force a hard reset,
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otherwise just log error message to console.
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config SKIP_TPM_STARTUP_ON_NORMAL_BOOT
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bool
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default n
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depends on LPC_TPM
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help
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Skip TPM init on normal boot. Useful if payload does TPM init.
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config TPM_DEACTIVATE
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bool "Deactivate TPM"
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default n
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depends on LPC_TPM
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help
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Deactivate TPM by issuing deactivate command.
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config TPM_RDRESP_NEED_DELAY
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bool "Enable Delay Workaround for TPM"
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default n
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depends on LPC_TPM
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help
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Certain TPMs seem to need some delay when reading response
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to work around a race-condition-related issue, possibly
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caused by ill-programmed TPM firmware.
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