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tpm: Add an implementation of define_space

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Add support for this so that the TPM can be set up for use with
Chromium OS verified boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
This commit is contained in:
Simon Glass
2021-02-06 14:23:39 -07:00
committed by Tom Rini
parent 1bea7cc430
commit eadcbc7896
2 changed files with 65 additions and 0 deletions
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18
include/tpm-v2.h
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@@ -240,6 +240,7 @@ enum tpm2_command_codes {
TPM2_CC_CLEAR = 0x0126,
TPM2_CC_CLEARCONTROL = 0x0127,
TPM2_CC_HIERCHANGEAUTH = 0x0129,
TPM2_CC_NV_DEFINE_SPACE = 0x012a,
TPM2_CC_PCR_SETAUTHPOL = 0x012C,
TPM2_CC_DAM_RESET = 0x0139,
TPM2_CC_DAM_PARAMETERS = 0x013A,
@@ -388,6 +389,23 @@ u32 tpm2_self_test(struct udevice *dev, enum tpm2_yes_no full_test);
u32 tpm2_clear(struct udevice *dev, u32 handle, const char *pw,
const ssize_t pw_sz);
/**
* Issue a TPM_NV_DefineSpace command
*
* This allows a space to be defined with given attributes and policy
*
* @dev TPM device
* @space_index index of the area
* @space_size size of area in bytes
* @nv_attributes TPM_NV_ATTRIBUTES of the area
* @nv_policy policy to use
* @nv_policy_size size of the policy
* @return return code of the operation
*/
u32 tpm2_nv_define_space(struct udevice *dev, u32 space_index,
size_t space_size, u32 nv_attributes,
const u8 *nv_policy, size_t nv_policy_size);
/**
* Issue a TPM2_PCR_Extend command.
*