#include <dm.h>
#include <tpm-common.h>
#include <tpm-v2.h>
+#include <linux/bitops.h>
#include "tpm-utils.h"
-u32 tpm2_startup(enum tpm2_startup_types mode)
+u32 tpm2_startup(struct udevice *dev, enum tpm2_startup_types mode)
{
const u8 command_v2[12] = {
tpm_u16(TPM2_ST_NO_SESSIONS),
* Note TPM2_Startup command will return RC_SUCCESS the first time,
* but will return RC_INITIALIZE otherwise.
*/
- ret = tpm_sendrecv_command(command_v2, NULL, NULL);
+ ret = tpm_sendrecv_command(dev, command_v2, NULL, NULL);
if (ret && ret != TPM2_RC_INITIALIZE)
return ret;
return 0;
}
-u32 tpm2_self_test(enum tpm2_yes_no full_test)
+u32 tpm2_self_test(struct udevice *dev, enum tpm2_yes_no full_test)
{
const u8 command_v2[12] = {
tpm_u16(TPM2_ST_NO_SESSIONS),
full_test,
};
- return tpm_sendrecv_command(command_v2, NULL, NULL);
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_auto_start(struct udevice *dev)
+{
+ u32 rc;
+
+ rc = tpm2_self_test(dev, TPMI_YES);
+
+ if (rc == TPM2_RC_INITIALIZE) {
+ rc = tpm2_startup(dev, TPM2_SU_CLEAR);
+ if (rc)
+ return rc;
+
+ rc = tpm2_self_test(dev, TPMI_YES);
+ }
+
+ return rc;
+}
+
+u32 tpm2_clear(struct udevice *dev, u32 handle, const char *pw,
+ const ssize_t pw_sz)
+{
+ /* Length of the message header, up to start of password */
+ uint offset = 27;
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(offset + pw_sz), /* Length */
+ tpm_u32(TPM2_CC_CLEAR), /* Command code */
+
+ /* HANDLE */
+ tpm_u32(handle), /* TPM resource handle */
+
+ /* AUTH_SESSION */
+ tpm_u32(9 + pw_sz), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* Session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(pw_sz), /* Size of <hmac/password> */
+ /* STRING(pw) <hmac/password> (if any) */
+ };
+ int ret;
+
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the password (if any)
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "s",
+ offset, pw, pw_sz);
+ offset += pw_sz;
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+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)
+{
+ /*
+ * Calculate the offset of the nv_policy piece by adding each of the
+ * chunks below.
+ */
+ const int platform_len = sizeof(u32);
+ const int session_hdr_len = 13;
+ const int message_len = 14;
+ uint offset = TPM2_HDR_LEN + platform_len + session_hdr_len +
+ message_len;
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ /* header 10 bytes */
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(offset + nv_policy_size + 2),/* Length */
+ tpm_u32(TPM2_CC_NV_DEFINE_SPACE),/* Command code */
+
+ /* handles 4 bytes */
+ tpm_u32(TPM2_RH_PLATFORM), /* Primary platform seed */
+
+ /* session header 13 bytes */
+ tpm_u32(9), /* Header size */
+ tpm_u32(TPM2_RS_PW), /* Password authorisation */
+ tpm_u16(0), /* nonce_size */
+ 0, /* session_attrs */
+ tpm_u16(0), /* auth_size */
+
+ /* message 14 bytes + policy */
+ tpm_u16(message_len + nv_policy_size), /* size */
+ tpm_u32(space_index),
+ tpm_u16(TPM2_ALG_SHA256),
+ tpm_u32(nv_attributes),
+ tpm_u16(nv_policy_size),
+ /*
+ * nv_policy
+ * space_size
+ */
+ };
+ int ret;
+
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the password (if any)
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "sw",
+ offset, nv_policy, nv_policy_size,
+ offset + nv_policy_size, space_size);
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_pcr_extend(struct udevice *dev, u32 index, u32 algorithm,
+ const u8 *digest, u32 digest_len)
+{
+ /* Length of the message header, up to start of digest */
+ uint offset = 33;
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(offset + digest_len), /* Length */
+ tpm_u32(TPM2_CC_PCR_EXTEND), /* Command code */
+
+ /* HANDLE */
+ tpm_u32(index), /* Handle (PCR Index) */
+
+ /* AUTH_SESSION */
+ tpm_u32(9), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* Session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(0), /* Size of <hmac/password> */
+ /* <hmac/password> (if any) */
+
+ /* hashes */
+ tpm_u32(1), /* Count (number of hashes) */
+ tpm_u16(algorithm), /* Algorithm of the hash */
+ /* STRING(digest) Digest */
+ };
+ int ret;
+
+ if (!digest)
+ return -EINVAL;
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the digest
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "s",
+ offset, digest, digest_len);
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ /* header 10 bytes */
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(10 + 8 + 4 + 9 + 4), /* Length */
+ tpm_u32(TPM2_CC_NV_READ), /* Command code */
+
+ /* handles 8 bytes */
+ tpm_u32(TPM2_RH_PLATFORM), /* Primary platform seed */
+ tpm_u32(HR_NV_INDEX + index), /* Password authorisation */
+
+ /* AUTH_SESSION */
+ tpm_u32(9), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* Session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(0), /* Size of <hmac/password> */
+ /* <hmac/password> (if any) */
+
+ tpm_u16(count), /* Number of bytes */
+ tpm_u16(0), /* Offset */
+ };
+ size_t response_len = COMMAND_BUFFER_SIZE;
+ u8 response[COMMAND_BUFFER_SIZE];
+ int ret;
+ u16 tag;
+ u32 size, code;
+
+ ret = tpm_sendrecv_command(dev, command_v2, response, &response_len);
+ if (ret)
+ return log_msg_ret("read", ret);
+ if (unpack_byte_string(response, response_len, "wdds",
+ 0, &tag, 2, &size, 6, &code,
+ 16, data, count))
+ return TPM_LIB_ERROR;
+
+ return 0;
+}
+
+u32 tpm2_nv_write_value(struct udevice *dev, u32 index, const void *data,
+ u32 count)
+{
+ struct tpm_chip_priv *priv = dev_get_uclass_priv(dev);
+ uint offset = 10 + 8 + 4 + 9 + 2;
+ uint len = offset + count + 2;
+ /* Use empty password auth if platform hierarchy is disabled */
+ u32 auth = priv->plat_hier_disabled ? HR_NV_INDEX + index :
+ TPM2_RH_PLATFORM;
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ /* header 10 bytes */
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(len), /* Length */
+ tpm_u32(TPM2_CC_NV_WRITE), /* Command code */
+
+ /* handles 8 bytes */
+ tpm_u32(auth), /* Primary platform seed */
+ tpm_u32(HR_NV_INDEX + index), /* Password authorisation */
+
+ /* AUTH_SESSION */
+ tpm_u32(9), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* Session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(0), /* Size of <hmac/password> */
+ /* <hmac/password> (if any) */
+
+ tpm_u16(count),
+ };
+ size_t response_len = COMMAND_BUFFER_SIZE;
+ u8 response[COMMAND_BUFFER_SIZE];
+ int ret;
+
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "sw",
+ offset, data, count,
+ offset + count, 0);
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, response, &response_len);
+}
+
+u32 tpm2_pcr_read(struct udevice *dev, u32 idx, unsigned int idx_min_sz,
+ u16 algorithm, void *data, u32 digest_len,
+ unsigned int *updates)
+{
+ u8 idx_array_sz = max(idx_min_sz, DIV_ROUND_UP(idx, 8));
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_NO_SESSIONS), /* TAG */
+ tpm_u32(17 + idx_array_sz), /* Length */
+ tpm_u32(TPM2_CC_PCR_READ), /* Command code */
+
+ /* TPML_PCR_SELECTION */
+ tpm_u32(1), /* Number of selections */
+ tpm_u16(algorithm), /* Algorithm of the hash */
+ idx_array_sz, /* Array size for selection */
+ /* bitmap(idx) Selected PCR bitmap */
+ };
+ size_t response_len = COMMAND_BUFFER_SIZE;
+ u8 response[COMMAND_BUFFER_SIZE];
+ unsigned int pcr_sel_idx = idx / 8;
+ u8 pcr_sel_bit = BIT(idx % 8);
+ unsigned int counter = 0;
+ int ret;
+
+ if (pack_byte_string(command_v2, COMMAND_BUFFER_SIZE, "b",
+ 17 + pcr_sel_idx, pcr_sel_bit))
+ return TPM_LIB_ERROR;
+
+ ret = tpm_sendrecv_command(dev, command_v2, response, &response_len);
+ if (ret)
+ return ret;
+
+ if (digest_len > response_len)
+ return TPM_LIB_ERROR;
+
+ if (unpack_byte_string(response, response_len, "ds",
+ 10, &counter,
+ response_len - digest_len, data,
+ digest_len))
+ return TPM_LIB_ERROR;
+
+ if (updates)
+ *updates = counter;
+
+ return 0;
+}
+
+u32 tpm2_get_capability(struct udevice *dev, u32 capability, u32 property,
+ void *buf, size_t prop_count)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_NO_SESSIONS), /* TAG */
+ tpm_u32(22), /* Length */
+ tpm_u32(TPM2_CC_GET_CAPABILITY), /* Command code */
+
+ tpm_u32(capability), /* Capability */
+ tpm_u32(property), /* Property */
+ tpm_u32(prop_count), /* Property count */
+ };
+ u8 response[COMMAND_BUFFER_SIZE];
+ size_t response_len = COMMAND_BUFFER_SIZE;
+ unsigned int properties_off;
+ int ret;
+
+ ret = tpm_sendrecv_command(dev, command_v2, response, &response_len);
+ if (ret)
+ return ret;
+
+ /*
+ * In the response buffer, the properties are located after the:
+ * tag (u16), response size (u32), response code (u32),
+ * YES/NO flag (u8), TPM_CAP (u32).
+ */
+ properties_off = sizeof(u16) + sizeof(u32) + sizeof(u32) +
+ sizeof(u8) + sizeof(u32);
+ memcpy(buf, &response[properties_off], response_len - properties_off);
+
+ return 0;
+}
+
+u32 tpm2_dam_reset(struct udevice *dev, const char *pw, const ssize_t pw_sz)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(27 + pw_sz), /* Length */
+ tpm_u32(TPM2_CC_DAM_RESET), /* Command code */
+
+ /* HANDLE */
+ tpm_u32(TPM2_RH_LOCKOUT), /* TPM resource handle */
+
+ /* AUTH_SESSION */
+ tpm_u32(9 + pw_sz), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* Session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(pw_sz), /* Size of <hmac/password> */
+ /* STRING(pw) <hmac/password> (if any) */
+ };
+ unsigned int offset = 27;
+ int ret;
+
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the password (if any)
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "s",
+ offset, pw, pw_sz);
+ offset += pw_sz;
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_dam_parameters(struct udevice *dev, const char *pw,
+ const ssize_t pw_sz, unsigned int max_tries,
+ unsigned int recovery_time,
+ unsigned int lockout_recovery)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(27 + pw_sz + 12), /* Length */
+ tpm_u32(TPM2_CC_DAM_PARAMETERS), /* Command code */
+
+ /* HANDLE */
+ tpm_u32(TPM2_RH_LOCKOUT), /* TPM resource handle */
+
+ /* AUTH_SESSION */
+ tpm_u32(9 + pw_sz), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* Session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(pw_sz), /* Size of <hmac/password> */
+ /* STRING(pw) <hmac/password> (if any) */
+
+ /* LOCKOUT PARAMETERS */
+ /* tpm_u32(max_tries) Max tries (0, always lock) */
+ /* tpm_u32(recovery_time) Recovery time (0, no lock) */
+ /* tpm_u32(lockout_recovery) Lockout recovery */
+ };
+ unsigned int offset = 27;
+ int ret;
+
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the password (if any)
+ * - max tries
+ * - recovery time
+ * - lockout recovery
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "sddd",
+ offset, pw, pw_sz,
+ offset + pw_sz, max_tries,
+ offset + pw_sz + 4, recovery_time,
+ offset + pw_sz + 8, lockout_recovery);
+ offset += pw_sz + 12;
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+int tpm2_change_auth(struct udevice *dev, u32 handle, const char *newpw,
+ const ssize_t newpw_sz, const char *oldpw,
+ const ssize_t oldpw_sz)
+{
+ unsigned int offset = 27;
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(offset + oldpw_sz + 2 + newpw_sz), /* Length */
+ tpm_u32(TPM2_CC_HIERCHANGEAUTH), /* Command code */
+
+ /* HANDLE */
+ tpm_u32(handle), /* TPM resource handle */
+
+ /* AUTH_SESSION */
+ tpm_u32(9 + oldpw_sz), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* Session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(oldpw_sz) /* Size of <hmac/password> */
+ /* STRING(oldpw) <hmac/password> (if any) */
+
+ /* TPM2B_AUTH (TPM2B_DIGEST) */
+ /* tpm_u16(newpw_sz) Digest size, new pw length */
+ /* STRING(newpw) Digest buffer, new pw */
+ };
+ int ret;
+
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the old password (if any)
+ * - size of the new password
+ * - new password
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "sws",
+ offset, oldpw, oldpw_sz,
+ offset + oldpw_sz, newpw_sz,
+ offset + oldpw_sz + 2, newpw, newpw_sz);
+ offset += oldpw_sz + 2 + newpw_sz;
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_pcr_setauthpolicy(struct udevice *dev, const char *pw,
+ const ssize_t pw_sz, u32 index, const char *key)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(35 + pw_sz + TPM2_DIGEST_LEN), /* Length */
+ tpm_u32(TPM2_CC_PCR_SETAUTHPOL), /* Command code */
+
+ /* HANDLE */
+ tpm_u32(TPM2_RH_PLATFORM), /* TPM resource handle */
+
+ /* AUTH_SESSION */
+ tpm_u32(9 + pw_sz), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(pw_sz) /* Size of <hmac/password> */
+ /* STRING(pw) <hmac/password> (if any) */
+
+ /* TPM2B_AUTH (TPM2B_DIGEST) */
+ /* tpm_u16(TPM2_DIGEST_LEN) Digest size length */
+ /* STRING(key) Digest buffer (PCR key) */
+
+ /* TPMI_ALG_HASH */
+ /* tpm_u16(TPM2_ALG_SHA256) Algorithm of the hash */
+
+ /* TPMI_DH_PCR */
+ /* tpm_u32(index), PCR Index */
+ };
+ unsigned int offset = 27;
+ int ret;
+
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the password (if any)
+ * - the PCR key length
+ * - the PCR key
+ * - the hash algorithm
+ * - the PCR index
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "swswd",
+ offset, pw, pw_sz,
+ offset + pw_sz, TPM2_DIGEST_LEN,
+ offset + pw_sz + 2, key, TPM2_DIGEST_LEN,
+ offset + pw_sz + 2 + TPM2_DIGEST_LEN,
+ TPM2_ALG_SHA256,
+ offset + pw_sz + 4 + TPM2_DIGEST_LEN, index);
+ offset += pw_sz + 2 + TPM2_DIGEST_LEN + 2 + 4;
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_pcr_setauthvalue(struct udevice *dev, const char *pw,
+ const ssize_t pw_sz, u32 index, const char *key,
+ const ssize_t key_sz)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(33 + pw_sz + TPM2_DIGEST_LEN), /* Length */
+ tpm_u32(TPM2_CC_PCR_SETAUTHVAL), /* Command code */
+
+ /* HANDLE */
+ tpm_u32(index), /* Handle (PCR Index) */
+
+ /* AUTH_SESSION */
+ tpm_u32(9 + pw_sz), /* Authorization size */
+ tpm_u32(TPM2_RS_PW), /* session handle */
+ tpm_u16(0), /* Size of <nonce> */
+ /* <nonce> (if any) */
+ 0, /* Attributes: Cont/Excl/Rst */
+ tpm_u16(pw_sz), /* Size of <hmac/password> */
+ /* STRING(pw) <hmac/password> (if any) */
+
+ /* TPM2B_DIGEST */
+ /* tpm_u16(key_sz) Key length */
+ /* STRING(key) Key */
+ };
+ unsigned int offset = 27;
+ int ret;
+
+ /*
+ * Fill the command structure starting from the first buffer:
+ * - the password (if any)
+ * - the number of digests, 1 in our case
+ * - the algorithm, sha256 in our case
+ * - the digest (64 bytes)
+ */
+ ret = pack_byte_string(command_v2, sizeof(command_v2), "sws",
+ offset, pw, pw_sz,
+ offset + pw_sz, key_sz,
+ offset + pw_sz + 2, key, key_sz);
+ offset += pw_sz + 2 + key_sz;
+ if (ret)
+ return TPM_LIB_ERROR;
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_get_random(struct udevice *dev, void *data, u32 count)
+{
+ const u8 command_v2[10] = {
+ tpm_u16(TPM2_ST_NO_SESSIONS),
+ tpm_u32(12),
+ tpm_u32(TPM2_CC_GET_RANDOM),
+ };
+ u8 buf[COMMAND_BUFFER_SIZE], response[COMMAND_BUFFER_SIZE];
+
+ const size_t data_size_offset = 10;
+ const size_t data_offset = 12;
+ size_t response_length = sizeof(response);
+ u32 data_size;
+ u8 *out = data;
+
+ while (count > 0) {
+ u32 this_bytes = min((size_t)count,
+ sizeof(response) - data_offset);
+ u32 err;
+
+ if (pack_byte_string(buf, sizeof(buf), "sw",
+ 0, command_v2, sizeof(command_v2),
+ sizeof(command_v2), this_bytes))
+ return TPM_LIB_ERROR;
+ err = tpm_sendrecv_command(dev, buf, response,
+ &response_length);
+ if (err)
+ return err;
+ if (unpack_byte_string(response, response_length, "w",
+ data_size_offset, &data_size))
+ return TPM_LIB_ERROR;
+ if (data_size > this_bytes)
+ return TPM_LIB_ERROR;
+ if (unpack_byte_string(response, response_length, "s",
+ data_offset, out, data_size))
+ return TPM_LIB_ERROR;
+
+ count -= data_size;
+ out += data_size;
+ }
+
+ return 0;
+}
+
+u32 tpm2_write_lock(struct udevice *dev, u32 index)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ /* header 10 bytes */
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(10 + 8 + 13), /* Length */
+ tpm_u32(TPM2_CC_NV_WRITELOCK), /* Command code */
+
+ /* handles 8 bytes */
+ tpm_u32(TPM2_RH_PLATFORM), /* Primary platform seed */
+ tpm_u32(HR_NV_INDEX + index), /* Password authorisation */
+
+ /* session header 9 bytes */
+ tpm_u32(9), /* Header size */
+ tpm_u32(TPM2_RS_PW), /* Password authorisation */
+ tpm_u16(0), /* nonce_size */
+ 0, /* session_attrs */
+ tpm_u16(0), /* auth_size */
+ };
+
+ return tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+}
+
+u32 tpm2_disable_platform_hierarchy(struct udevice *dev)
+{
+ struct tpm_chip_priv *priv = dev_get_uclass_priv(dev);
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ /* header 10 bytes */
+ tpm_u16(TPM2_ST_SESSIONS), /* TAG */
+ tpm_u32(10 + 4 + 13 + 5), /* Length */
+ tpm_u32(TPM2_CC_HIER_CONTROL), /* Command code */
+
+ /* 4 bytes */
+ tpm_u32(TPM2_RH_PLATFORM), /* Primary platform seed */
+
+ /* session header 9 bytes */
+ tpm_u32(9), /* Header size */
+ tpm_u32(TPM2_RS_PW), /* Password authorisation */
+ tpm_u16(0), /* nonce_size */
+ 0, /* session_attrs */
+ tpm_u16(0), /* auth_size */
+
+ /* payload 5 bytes */
+ tpm_u32(TPM2_RH_PLATFORM), /* Hierarchy to disable */
+ 0, /* 0=disable */
+ };
+ int ret;
+
+ ret = tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+ log_info("ret=%s, %x\n", dev->name, ret);
+ if (ret)
+ return ret;
+
+ priv->plat_hier_disabled = true;
+
+ return 0;
+}
+
+u32 tpm2_submit_command(struct udevice *dev, const u8 *sendbuf,
+ u8 *recvbuf, size_t *recv_size)
+{
+ return tpm_sendrecv_command(dev, sendbuf, recvbuf, recv_size);
+}
+
+u32 tpm2_report_state(struct udevice *dev, uint vendor_cmd, uint vendor_subcmd,
+ u8 *recvbuf, size_t *recv_size)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ /* header 10 bytes */
+ tpm_u16(TPM2_ST_NO_SESSIONS), /* TAG */
+ tpm_u32(10 + 2), /* Length */
+ tpm_u32(vendor_cmd), /* Command code */
+
+ tpm_u16(vendor_subcmd),
+ };
+ int ret;
+
+ ret = tpm_sendrecv_command(dev, command_v2, recvbuf, recv_size);
+ log_debug("ret=%s, %x\n", dev->name, ret);
+ if (ret)
+ return ret;
+ if (*recv_size < 12)
+ return -ENODATA;
+ *recv_size -= 12;
+ memcpy(recvbuf, recvbuf + 12, *recv_size);
+
+ return 0;
+}
+
+u32 tpm2_enable_nvcommits(struct udevice *dev, uint vendor_cmd,
+ uint vendor_subcmd)
+{
+ u8 command_v2[COMMAND_BUFFER_SIZE] = {
+ /* header 10 bytes */
+ tpm_u16(TPM2_ST_NO_SESSIONS), /* TAG */
+ tpm_u32(10 + 2), /* Length */
+ tpm_u32(vendor_cmd), /* Command code */
+
+ tpm_u16(vendor_subcmd),
+ };
+ int ret;
+
+ ret = tpm_sendrecv_command(dev, command_v2, NULL, NULL);
+ log_debug("ret=%s, %x\n", dev->name, ret);
+ if (ret)
+ return ret;
+
+ return 0;
}
projects / platform / kernel / u-boot.git / blobdiff