diff --git a/board/gdsys/a38x/controlcenterdc.c b/board/gdsys/a38x/controlcenterdc.c
index 4f1dc3b431..dc424f271c 100644
--- a/board/gdsys/a38x/controlcenterdc.c
+++ b/board/gdsys/a38x/controlcenterdc.c
@@ -288,8 +288,8 @@ int last_stage_init(void)
 	ccdc_eth_init();
 #endif
 	ret = get_tpm(&tpm);
-	if (ret || tpm_init(tpm) || tpm_startup(tpm, TPM_ST_CLEAR) ||
-	    tpm_continue_self_test(tpm)) {
+	if (ret || tpm_init(tpm) || tpm1_startup(tpm, TPM_ST_CLEAR) ||
+	    tpm1_continue_self_test(tpm)) {
 		return 1;
 	}
 
diff --git a/board/gdsys/a38x/hre.c b/board/gdsys/a38x/hre.c
index 699241b3e6..de5411a6b9 100644
--- a/board/gdsys/a38x/hre.c
+++ b/board/gdsys/a38x/hre.c
@@ -107,8 +107,8 @@ static int get_tpm_nv_size(struct udevice *tpm, uint32_t index, uint32_t *size)
 	uint8_t *ptr;
 	uint16_t v16;
 
-	err = tpm_get_capability(tpm, TPM_CAP_NV_INDEX, index,
-				 info, sizeof(info));
+	err = tpm1_get_capability(tpm, TPM_CAP_NV_INDEX, index, info,
+				  sizeof(info));
 	if (err) {
 		printf("tpm_get_capability(CAP_NV_INDEX, %08x) failed: %u\n",
 		       index, err);
@@ -150,8 +150,8 @@ static int find_key(struct udevice *tpm, const uint8_t auth[20],
 	unsigned int i;
 
 	/* fetch list of already loaded keys in the TPM */
-	err = tpm_get_capability(tpm, TPM_CAP_HANDLE, TPM_RT_KEY, buf,
-				 sizeof(buf));
+	err = tpm1_get_capability(tpm, TPM_CAP_HANDLE, TPM_RT_KEY, buf,
+				  sizeof(buf));
 	if (err)
 		return -1;
 	key_count = get_unaligned_be16(buf);
@@ -162,8 +162,8 @@ static int find_key(struct udevice *tpm, const uint8_t auth[20],
 	/* now search a(/ the) key which we can access with the given auth */
 	for (i = 0; i < key_count; ++i) {
 		buf_len = sizeof(buf);
-		err = tpm_get_pub_key_oiap(tpm, key_handles[i], auth, buf,
-					   &buf_len);
+		err = tpm1_get_pub_key_oiap(tpm, key_handles[i], auth, buf,
+					    &buf_len);
 		if (err && err != TPM_AUTHFAIL)
 			return -1;
 		if (err)
@@ -192,8 +192,8 @@ static int read_common_data(struct udevice *tpm)
 	if (get_tpm_nv_size(tpm, NV_COMMON_DATA_INDEX, &size) ||
 	    size < NV_COMMON_DATA_MIN_SIZE)
 		return 1;
-	err = tpm_nv_read_value(tpm, NV_COMMON_DATA_INDEX,
-				buf, min(sizeof(buf), size));
+	err = tpm1_nv_read_value(tpm, NV_COMMON_DATA_INDEX, buf,
+				 min(sizeof(buf), size));
 	if (err) {
 		printf("tpm_nv_read_value() failed: %u\n", err);
 		return 1;
@@ -270,8 +270,8 @@ static struct h_reg *access_hreg(struct udevice *tpm, uint8_t spec,
 	if (mode & HREG_RD) {
 		if (!result->valid) {
 			if (IS_PCR_HREG(spec)) {
-				hre_tpm_err = tpm_pcr_read(tpm, HREG_IDX(spec),
-					result->digest, 20);
+				hre_tpm_err = tpm1_pcr_read(tpm, HREG_IDX(spec),
+							    result->digest, 20);
 				result->valid = (hre_tpm_err == TPM_SUCCESS);
 			} else if (IS_FIX_HREG(spec)) {
 				switch (HREG_IDX(spec)) {
@@ -357,8 +357,8 @@ static int hre_op_loadkey(struct udevice *tpm, struct h_reg *src_reg,
 		return -1;
 	if (find_key(tpm, src_reg->digest, dst_reg->digest, &parent_handle))
 		return -1;
-	hre_tpm_err = tpm_load_key2_oiap(tpm, parent_handle, key, key_size,
-					 src_reg->digest, &key_handle);
+	hre_tpm_err = tpm1_load_key2_oiap(tpm, parent_handle, key, key_size,
+					  src_reg->digest, &key_handle);
 	if (hre_tpm_err) {
 		hre_err = HRE_E_TPM_FAILURE;
 		return -1;
@@ -474,8 +474,8 @@ do_bin_func:
 	}
 
 	if (dst_reg && dst_modified && IS_PCR_HREG(dst_spec)) {
-		hre_tpm_err = tpm_extend(tpm, HREG_IDX(dst_spec),
-					 dst_reg->digest, dst_reg->digest);
+		hre_tpm_err = tpm1_extend(tpm, HREG_IDX(dst_spec),
+					  dst_reg->digest, dst_reg->digest);
 		if (hre_tpm_err) {
 			hre_err = HRE_E_TPM_FAILURE;
 			return NULL;
diff --git a/board/gdsys/a38x/keyprogram.c b/board/gdsys/a38x/keyprogram.c
index 853981aadb..7020fae189 100644
--- a/board/gdsys/a38x/keyprogram.c
+++ b/board/gdsys/a38x/keyprogram.c
@@ -23,15 +23,15 @@ int flush_keys(struct udevice *tpm)
 	uint i;
 
 	/* fetch list of already loaded keys in the TPM */
-	err = tpm_get_capability(tpm, TPM_CAP_HANDLE, TPM_RT_KEY, buf,
-				 sizeof(buf));
+	err = tpm1_get_capability(tpm, TPM_CAP_HANDLE, TPM_RT_KEY, buf,
+				  sizeof(buf));
 	if (err)
 		return -1;
 	key_count = get_unaligned_be16(buf);
 	ptr = buf + 2;
 	for (i = 0; i < key_count; ++i, ptr += 4) {
-		err = tpm_flush_specific(tpm, get_unaligned_be32(ptr),
-					 TPM_RT_KEY);
+		err = tpm1_flush_specific(tpm, get_unaligned_be32(ptr),
+					  TPM_RT_KEY);
 		if (err && err != TPM_KEY_OWNER_CONTROL)
 			return err;
 	}
diff --git a/board/gdsys/mpc8308/gazerbeam.c b/board/gdsys/mpc8308/gazerbeam.c
index 4e974c56d2..3d4a7e57fe 100644
--- a/board/gdsys/mpc8308/gazerbeam.c
+++ b/board/gdsys/mpc8308/gazerbeam.c
@@ -145,8 +145,8 @@ int last_stage_init(void)
 	env_set_ulong("fpga_hw_rev", fpga_hw_rev);
 
 	ret = get_tpm(&tpm);
-	if (ret || tpm_init(tpm) || tpm_startup(tpm, TPM_ST_CLEAR) ||
-	    tpm_continue_self_test(tpm)) {
+	if (ret || tpm_init(tpm) || tpm1_startup(tpm, TPM_ST_CLEAR) ||
+	    tpm1_continue_self_test(tpm)) {
 		printf("TPM init failed\n");
 	}
 
diff --git a/board/gdsys/p1022/controlcenterd-id.c b/board/gdsys/p1022/controlcenterd-id.c
index 1b5aa9042f..87b346aa9c 100644
--- a/board/gdsys/p1022/controlcenterd-id.c
+++ b/board/gdsys/p1022/controlcenterd-id.c
@@ -273,8 +273,8 @@ static int get_tpm_nv_size(struct udevice *tpm, uint32_t index, uint32_t *size)
 	uint8_t *ptr;
 	uint16_t v16;
 
-	err = tpm_get_capability(tpm, TPM_CAP_NV_INDEX, index,
-				 info, sizeof(info));
+	err = tpm1_get_capability(tpm, TPM_CAP_NV_INDEX, index, info,
+				  sizeof(info));
 	if (err) {
 		printf("tpm_get_capability(CAP_NV_INDEX, %08x) failed: %u\n",
 		       index, err);
@@ -315,8 +315,8 @@ static int find_key(struct udevice *tpm, const uint8_t auth[20],
 	unsigned int i;
 
 	/* fetch list of already loaded keys in the TPM */
-	err = tpm_get_capability(tpm, TPM_CAP_HANDLE, TPM_RT_KEY, buf,
-				 sizeof(buf));
+	err = tpm1_get_capability(tpm, TPM_CAP_HANDLE, TPM_RT_KEY, buf,
+				  sizeof(buf));
 	if (err)
 		return -1;
 	key_count = get_unaligned_be16(buf);
@@ -327,8 +327,8 @@ static int find_key(struct udevice *tpm, const uint8_t auth[20],
 	/* now search a(/ the) key which we can access with the given auth */
 	for (i = 0; i < key_count; ++i) {
 		buf_len = sizeof(buf);
-		err = tpm_get_pub_key_oiap(tpm, key_handles[i], auth, buf,
-					   &buf_len);
+		err = tpm1_get_pub_key_oiap(tpm, key_handles[i], auth, buf,
+					    &buf_len);
 		if (err && err != TPM_AUTHFAIL)
 			return -1;
 		if (err)
@@ -356,8 +356,8 @@ static int read_common_data(struct udevice *tpm)
 	if (get_tpm_nv_size(tpm, NV_COMMON_DATA_INDEX, &size) ||
 	    size < NV_COMMON_DATA_MIN_SIZE)
 		return 1;
-	err = tpm_nv_read_value(tpm, NV_COMMON_DATA_INDEX,
-				buf, min(sizeof(buf), size));
+	err = tpm1_nv_read_value(tpm, NV_COMMON_DATA_INDEX, buf,
+				 min(sizeof(buf), size));
 	if (err) {
 		printf("tpm_nv_read_value() failed: %u\n", err);
 		return 1;
@@ -508,8 +508,8 @@ static struct h_reg *access_hreg(struct udevice *tpm, uint8_t spec,
 	if (mode & HREG_RD) {
 		if (!result->valid) {
 			if (IS_PCR_HREG(spec)) {
-				hre_tpm_err = tpm_pcr_read(tpm, HREG_IDX(spec),
-					result->digest, 20);
+				hre_tpm_err = tpm1_pcr_read(tpm, HREG_IDX(spec),
+							    result->digest, 20);
 				result->valid = (hre_tpm_err == TPM_SUCCESS);
 			} else if (IS_FIX_HREG(spec)) {
 				switch (HREG_IDX(spec)) {
@@ -601,8 +601,8 @@ static int hre_op_loadkey(struct udevice *tpm, struct h_reg *src_reg,
 		return -1;
 	if (find_key(tpm, src_reg->digest, dst_reg->digest, &parent_handle))
 		return -1;
-	hre_tpm_err = tpm_load_key2_oiap(tpm, parent_handle, key, key_size,
-					 src_reg->digest, &key_handle);
+	hre_tpm_err = tpm1_load_key2_oiap(tpm, parent_handle, key, key_size,
+					  src_reg->digest, &key_handle);
 	if (hre_tpm_err) {
 		hre_err = HRE_E_TPM_FAILURE;
 		return -1;
@@ -718,8 +718,8 @@ do_bin_func:
 	}
 
 	if (dst_reg && dst_modified && IS_PCR_HREG(dst_spec)) {
-		hre_tpm_err = tpm_extend(tpm, HREG_IDX(dst_spec),
-					 dst_reg->digest, dst_reg->digest);
+		hre_tpm_err = tpm1_extend(tpm, HREG_IDX(dst_spec),
+					  dst_reg->digest, dst_reg->digest);
 		if (hre_tpm_err) {
 			hre_err = HRE_E_TPM_FAILURE;
 			return NULL;
@@ -964,10 +964,10 @@ static int first_stage_actions(struct udevice *tpm)
 
 	puts("CCDM S1: start actions\n");
 #ifndef CCDM_SECOND_STAGE
-	if (tpm_continue_self_test(tpm))
+	if (tpm1_continue_self_test(tpm))
 		goto failure;
 #else
-	tpm_continue_self_test(tpm);
+	tpm1_continue_self_test(tpm);
 #endif
 	mdelay(37);
 
@@ -1003,7 +1003,7 @@ static int first_stage_init(void)
 
 	puts("CCDM S1\n");
 	ret = get_tpm(&tpm);
-	if (ret || tpm_init(tpm) || tpm_startup(tpm, TPM_ST_CLEAR))
+	if (ret || tpm_init(tpm) || tpm1_startup(tpm, TPM_ST_CLEAR))
 		return 1;
 	ret = first_stage_actions(tpm);
 #ifndef CCDM_SECOND_STAGE
@@ -1061,7 +1061,7 @@ static int second_stage_init(void)
 	ret = get_tpm(&tpm);
 	if (ret || tpm_init(tpm))
 		return 1;
-	err = tpm_startup(tpm, TPM_ST_CLEAR);
+	err = tpm1_startup(tpm, TPM_ST_CLEAR);
 	if (err != TPM_INVALID_POSTINIT)
 		did_first_stage_run = false;
 
diff --git a/cmd/tpm-v1.c b/cmd/tpm-v1.c
index 0e2168aea6..3a7e35d525 100644
--- a/cmd/tpm-v1.c
+++ b/cmd/tpm-v1.c
@@ -11,6 +11,7 @@
 #include <tpm-common.h>
 #include <tpm-v1.h>
 #include "tpm-user-utils.h"
+#include <tpm_api.h>
 
 static int do_tpm_startup(struct cmd_tbl *cmdtp, int flag, int argc,
 			  char *const argv[])
@@ -55,7 +56,7 @@ static int do_tpm_nv_define_space(struct cmd_tbl *cmdtp, int flag, int argc,
 	perm = simple_strtoul(argv[2], NULL, 0);
 	size = simple_strtoul(argv[3], NULL, 0);
 
-	return report_return_code(tpm_nv_define_space(dev, index, perm, size));
+	return report_return_code(tpm1_nv_define_space(dev, index, perm, size));
 }
 
 static int do_tpm_nv_read_value(struct cmd_tbl *cmdtp, int flag, int argc,
@@ -130,7 +131,7 @@ static int do_tpm_extend(struct cmd_tbl *cmdtp, int flag, int argc,
 		return CMD_RET_FAILURE;
 	}
 
-	rc = tpm_extend(dev, index, in_digest, out_digest);
+	rc = tpm_pcr_extend(dev, index, in_digest, out_digest);
 	if (!rc) {
 		puts("PCR value after execution of the command:\n");
 		print_byte_string(out_digest, sizeof(out_digest));
@@ -304,7 +305,7 @@ static int do_tpm_nv_define(struct cmd_tbl *cmdtp, int flag, int argc,
 	index = simple_strtoul(argv[2], NULL, 0);
 	perm = simple_strtoul(argv[3], NULL, 0);
 
-	return report_return_code(tpm_nv_define_space(dev, index, perm, size));
+	return report_return_code(tpm1_nv_define_space(dev, index, perm, size));
 }
 
 static int do_tpm_nv_read(struct cmd_tbl *cmdtp, int flag, int argc,
@@ -389,7 +390,7 @@ static int do_tpm_oiap(struct cmd_tbl *cmdtp, int flag, int argc,
 	if (rc)
 		return rc;
 
-	err = tpm_oiap(dev, &auth_handle);
+	err = tpm1_oiap(dev, &auth_handle);
 
 	return report_return_code(err);
 }
@@ -461,8 +462,8 @@ static int do_tpm_load_key2_oiap(struct cmd_tbl *cmdtp, int flag, int argc,
 		return CMD_RET_FAILURE;
 	parse_byte_string(argv[4], usage_auth, NULL);
 
-	err = tpm_load_key2_oiap(dev, parent_handle, key, key_len, usage_auth,
-				 &key_handle);
+	err = tpm1_load_key2_oiap(dev, parent_handle, key, key_len, usage_auth,
+				  &key_handle);
 	if (!err)
 		printf("Key handle is 0x%x\n", key_handle);
 
@@ -491,8 +492,8 @@ static int do_tpm_get_pub_key_oiap(struct cmd_tbl *cmdtp, int flag, int argc,
 		return CMD_RET_FAILURE;
 	parse_byte_string(argv[2], usage_auth, NULL);
 
-	err = tpm_get_pub_key_oiap(dev, key_handle, usage_auth, pub_key_buffer,
-				   &pub_key_len);
+	err = tpm1_get_pub_key_oiap(dev, key_handle, usage_auth, pub_key_buffer,
+				    &pub_key_len);
 	if (!err) {
 		printf("dump of received pub key structure:\n");
 		print_byte_string(pub_key_buffer, pub_key_len);
@@ -500,7 +501,7 @@ static int do_tpm_get_pub_key_oiap(struct cmd_tbl *cmdtp, int flag, int argc,
 	return report_return_code(err);
 }
 
-TPM_COMMAND_NO_ARG(tpm_end_oiap)
+TPM_COMMAND_NO_ARG(tpm1_end_oiap)
 
 #endif /* CONFIG_TPM_AUTH_SESSIONS */
 
@@ -562,7 +563,7 @@ static int do_tpm_flush(struct cmd_tbl *cmdtp, int flag, int argc,
 		res_count = get_unaligned_be16(buf);
 		ptr = buf + 2;
 		for (i = 0; i < res_count; ++i, ptr += 4)
-			tpm_flush_specific(dev, get_unaligned_be32(ptr), type);
+			tpm1_flush_specific(dev, get_unaligned_be32(ptr), type);
 	} else {
 		u32 handle = simple_strtoul(argv[2], NULL, 0);
 
@@ -570,7 +571,7 @@ static int do_tpm_flush(struct cmd_tbl *cmdtp, int flag, int argc,
 			printf("Illegal resource handle %s\n", argv[2]);
 			return -1;
 		}
-		tpm_flush_specific(dev, cpu_to_be32(handle), type);
+		tpm1_flush_specific(dev, cpu_to_be32(handle), type);
 	}
 
 	return 0;
@@ -691,7 +692,7 @@ static struct cmd_tbl tpm1_commands[] = {
 	U_BOOT_CMD_MKENT(oiap, 0, 1,
 			 do_tpm_oiap, "", ""),
 	U_BOOT_CMD_MKENT(end_oiap, 0, 1,
-			 do_tpm_end_oiap, "", ""),
+			 do_tpm1_end_oiap, "", ""),
 	U_BOOT_CMD_MKENT(load_key2_oiap, 0, 1,
 			 do_tpm_load_key2_oiap, "", ""),
 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
diff --git a/cmd/tpm_test.c b/cmd/tpm_test.c
index 3fb964c371..a3ccb12f53 100644
--- a/cmd/tpm_test.c
+++ b/cmd/tpm_test.c
@@ -9,6 +9,7 @@
 #include <log.h>
 #include <tpm-v1.h>
 #include "tpm-user-utils.h"
+#include <tpm_api.h>
 
 /* Prints error and returns on failure */
 #define TPM_CHECK(tpm_command) do { \
@@ -49,7 +50,7 @@ static uint32_t tpm_get_flags(struct udevice *dev, uint8_t *disable,
 	struct tpm_permanent_flags pflags;
 	uint32_t result;
 
-	result = tpm_get_permanent_flags(dev, &pflags);
+	result = tpm1_get_permanent_flags(dev, &pflags);
 	if (result)
 		return result;
 	if (disable)
@@ -90,7 +91,7 @@ static int test_early_extend(struct udevice *dev)
 	tpm_init(dev);
 	TPM_CHECK(tpm_startup(dev, TPM_ST_CLEAR));
 	TPM_CHECK(tpm_continue_self_test(dev));
-	TPM_CHECK(tpm_extend(dev, 1, value_in, value_out));
+	TPM_CHECK(tpm_pcr_extend(dev, 1, value_in, value_out));
 	printf("done\n");
 	return 0;
 }
@@ -238,18 +239,18 @@ static void initialise_spaces(struct udevice *dev)
 	uint32_t perm = TPM_NV_PER_WRITE_STCLEAR | TPM_NV_PER_PPWRITE;
 
 	printf("\tInitialising spaces\n");
-	tpm_nv_set_locked(dev);  /* useful only the first time */
-	tpm_nv_define_space(dev, INDEX0, perm, 4);
+	tpm1_nv_set_locked(dev);  /* useful only the first time */
+	tpm1_nv_define_space(dev, INDEX0, perm, 4);
 	tpm_nv_write_value(dev, INDEX0, (uint8_t *)&zero, 4);
-	tpm_nv_define_space(dev, INDEX1, perm, 4);
+	tpm1_nv_define_space(dev, INDEX1, perm, 4);
 	tpm_nv_write_value(dev, INDEX1, (uint8_t *)&zero, 4);
-	tpm_nv_define_space(dev, INDEX2, perm, 4);
+	tpm1_nv_define_space(dev, INDEX2, perm, 4);
 	tpm_nv_write_value(dev, INDEX2, (uint8_t *)&zero, 4);
-	tpm_nv_define_space(dev, INDEX3, perm, 4);
+	tpm1_nv_define_space(dev, INDEX3, perm, 4);
 	tpm_nv_write_value(dev, INDEX3, (uint8_t *)&zero, 4);
 	perm = TPM_NV_PER_READ_STCLEAR | TPM_NV_PER_WRITE_STCLEAR |
 		TPM_NV_PER_PPWRITE;
-	tpm_nv_define_space(dev, INDEX_INITIALISED, perm, 1);
+	tpm1_nv_define_space(dev, INDEX_INITIALISED, perm, 1);
 }
 
 static int test_readonly(struct udevice *dev)
@@ -325,30 +326,33 @@ static int test_redefine_unowned(struct udevice *dev)
 
 	/* Redefines spaces a couple of times. */
 	perm = TPM_NV_PER_PPWRITE | TPM_NV_PER_GLOBALLOCK;
-	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, 2 * sizeof(uint32_t)));
-	TPM_CHECK(tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
+	TPM_CHECK(tpm1_nv_define_space(dev, INDEX0, perm,
+				       2 * sizeof(uint32_t)));
+	TPM_CHECK(tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t)));
 	perm = TPM_NV_PER_PPWRITE;
-	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
-	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
+	TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm,
+				       2 * sizeof(uint32_t)));
+	TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
 
 	/* Sets the global lock */
 	tpm_set_global_lock(dev);
 
 	/* Verifies that index0 cannot be redefined */
-	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
+	result = tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
 	assert(result == TPM_AREA_LOCKED);
 
 	/* Checks that index1 can */
-	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, 2 * sizeof(uint32_t)));
-	TPM_CHECK(tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
+	TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm,
+				       2 * sizeof(uint32_t)));
+	TPM_CHECK(tpm1_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t)));
 
 	/* Turns off PP */
 	tpm_tsc_physical_presence(dev, PHYS_PRESENCE);
 
 	/* Verifies that neither index0 nor index1 can be redefined */
-	result = tpm_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
+	result = tpm1_nv_define_space(dev, INDEX0, perm, sizeof(uint32_t));
 	assert(result == TPM_BAD_PRESENCE);
-	result = tpm_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t));
+	result = tpm1_nv_define_space(dev, INDEX1, perm, sizeof(uint32_t));
 	assert(result == TPM_BAD_PRESENCE);
 
 	printf("done\n");
@@ -434,7 +438,7 @@ static int test_timing(struct udevice *dev)
 		   100);
 	TTPM_CHECK(tpm_nv_read_value(dev, INDEX0, (uint8_t *)&x, sizeof(x)),
 		   100);
-	TTPM_CHECK(tpm_extend(dev, 0, in, out), 200);
+	TTPM_CHECK(tpm_pcr_extend(dev, 0, in, out), 200);
 	TTPM_CHECK(tpm_set_global_lock(dev), 50);
 	TTPM_CHECK(tpm_tsc_physical_presence(dev, PHYS_PRESENCE), 100);
 	printf("done\n");
diff --git a/include/tpm-v1.h b/include/tpm-v1.h
index 8f6cc28a9e..fcfe1f054f 100644
--- a/include/tpm-v1.h
+++ b/include/tpm-v1.h
@@ -289,7 +289,7 @@ struct __packed tpm_nv_data_public {
  * @param mode		TPM startup mode
  * @return return code of the operation
  */
-u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode);
+u32 tpm1_startup(struct udevice *dev, enum tpm_startup_type mode);
 
 /**
  * Issue a TPM_SelfTestFull command.
@@ -297,7 +297,7 @@ u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode);
  * @param dev		TPM device
  * @return return code of the operation
  */
-u32 tpm_self_test_full(struct udevice *dev);
+u32 tpm1_self_test_full(struct udevice *dev);
 
 /**
  * Issue a TPM_ContinueSelfTest command.
@@ -305,7 +305,7 @@ u32 tpm_self_test_full(struct udevice *dev);
  * @param dev		TPM device
  * @return return code of the operation
  */
-u32 tpm_continue_self_test(struct udevice *dev);
+u32 tpm1_continue_self_test(struct udevice *dev);
 
 /**
  * Issue a TPM_NV_DefineSpace command.  The implementation is limited
@@ -318,7 +318,7 @@ u32 tpm_continue_self_test(struct udevice *dev);
  * @param size		size of the area
  * @return return code of the operation
  */
-u32 tpm_nv_define_space(struct udevice *dev, u32 index, u32 perm, u32 size);
+u32 tpm1_nv_define_space(struct udevice *dev, u32 index, u32 perm, u32 size);
 
 /**
  * Issue a TPM_NV_ReadValue command.  This implementation is limited
@@ -331,7 +331,7 @@ u32 tpm_nv_define_space(struct udevice *dev, u32 index, u32 perm, u32 size);
  * @param count		size of output buffer
  * @return return code of the operation
  */
-u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count);
+u32 tpm1_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count);
 
 /**
  * Issue a TPM_NV_WriteValue command.  This implementation is limited
@@ -344,8 +344,8 @@ u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count);
  * @param length	length of data bytes of input buffer
  * @return return code of the operation
  */
-u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data,
-		       u32 length);
+u32 tpm1_nv_write_value(struct udevice *dev, u32 index, const void *data,
+			u32 length);
 
 /**
  * Issue a TPM_Extend command.
@@ -358,8 +358,8 @@ u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data,
  *			command
  * @return return code of the operation
  */
-u32 tpm_extend(struct udevice *dev, u32 index, const void *in_digest,
-	       void *out_digest);
+u32 tpm1_extend(struct udevice *dev, u32 index, const void *in_digest,
+		void *out_digest);
 
 /**
  * Issue a TPM_PCRRead command.
@@ -370,7 +370,7 @@ u32 tpm_extend(struct udevice *dev, u32 index, const void *in_digest,
  * @param count		size of output buffer
  * @return return code of the operation
  */
-u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count);
+u32 tpm1_pcr_read(struct udevice *dev, u32 index, void *data, size_t count);
 
 /**
  * Issue a TSC_PhysicalPresence command.  TPM physical presence flag
@@ -380,7 +380,7 @@ u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count);
  * @param presence	TPM physical presence flag
  * @return return code of the operation
  */
-u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence);
+u32 tpm1_tsc_physical_presence(struct udevice *dev, u16 presence);
 
 /**
  * Issue a TPM_ReadPubek command.
@@ -390,7 +390,7 @@ u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence);
  * @param count		size of output buffer
  * @return return code of the operation
  */
-u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count);
+u32 tpm1_read_pubek(struct udevice *dev, void *data, size_t count);
 
 /**
  * Issue a TPM_ForceClear command.
@@ -398,7 +398,7 @@ u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count);
  * @param dev		TPM device
  * @return return code of the operation
  */
-u32 tpm_force_clear(struct udevice *dev);
+u32 tpm1_force_clear(struct udevice *dev);
 
 /**
  * Issue a TPM_PhysicalEnable command.
@@ -406,7 +406,7 @@ u32 tpm_force_clear(struct udevice *dev);
  * @param dev		TPM device
  * @return return code of the operation
  */
-u32 tpm_physical_enable(struct udevice *dev);
+u32 tpm1_physical_enable(struct udevice *dev);
 
 /**
  * Issue a TPM_PhysicalDisable command.
@@ -414,7 +414,7 @@ u32 tpm_physical_enable(struct udevice *dev);
  * @param dev		TPM device
  * @return return code of the operation
  */
-u32 tpm_physical_disable(struct udevice *dev);
+u32 tpm1_physical_disable(struct udevice *dev);
 
 /**
  * Issue a TPM_PhysicalSetDeactivated command.
@@ -423,7 +423,7 @@ u32 tpm_physical_disable(struct udevice *dev);
  * @param state		boolean state of the deactivated flag
  * @return return code of the operation
  */
-u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state);
+u32 tpm1_physical_set_deactivated(struct udevice *dev, u8 state);
 
 /**
  * Issue a TPM_GetCapability command.  This implementation is limited
@@ -437,8 +437,8 @@ u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state);
  * @param count		size of output buffer
  * @return return code of the operation
  */
-u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
-		       void *cap, size_t count);
+u32 tpm1_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
+			void *cap, size_t count);
 
 /**
  * Issue a TPM_FlushSpecific command for a AUTH resource.
@@ -447,7 +447,7 @@ u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
  * @param auth_handle	handle of the auth session
  * @return return code of the operation
  */
-u32 tpm_terminate_auth_session(struct udevice *dev, u32 auth_handle);
+u32 tpm1_terminate_auth_session(struct udevice *dev, u32 auth_handle);
 
 /**
  * Issue a TPM_OIAP command to setup an object independent authorization
@@ -460,7 +460,7 @@ u32 tpm_terminate_auth_session(struct udevice *dev, u32 auth_handle);
  * @param auth_handle	pointer to the (new) auth handle or NULL.
  * @return return code of the operation
  */
-u32 tpm_oiap(struct udevice *dev, u32 *auth_handle);
+u32 tpm1_oiap(struct udevice *dev, u32 *auth_handle);
 
 /**
  * Ends an active OIAP session.
@@ -468,7 +468,7 @@ u32 tpm_oiap(struct udevice *dev, u32 *auth_handle);
  * @param dev		TPM device
  * @return return code of the operation
  */
-u32 tpm_end_oiap(struct udevice *dev);
+u32 tpm1_end_oiap(struct udevice *dev);
 
 /**
  * Issue a TPM_LoadKey2 (Auth1) command using an OIAP session for authenticating
@@ -482,9 +482,9 @@ u32 tpm_end_oiap(struct udevice *dev);
  * @param key_handle	pointer to the key handle
  * @return return code of the operation
  */
-u32 tpm_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key,
-		       size_t key_length, const void *parent_key_usage_auth,
-		       u32 *key_handle);
+u32 tpm1_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key,
+			size_t key_length, const void *parent_key_usage_auth,
+			u32 *key_handle);
 
 /**
  * Issue a TPM_GetPubKey (Auth1) command using an OIAP session for
@@ -500,9 +500,9 @@ u32 tpm_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key,
  *			of the stored TPM_PUBKEY structure (iff pubkey != NULL).
  * @return return code of the operation
  */
-u32 tpm_get_pub_key_oiap(struct udevice *dev, u32 key_handle,
-			 const void *usage_auth, void *pubkey,
-			 size_t *pubkey_len);
+u32 tpm1_get_pub_key_oiap(struct udevice *dev, u32 key_handle,
+			  const void *usage_auth, void *pubkey,
+			  size_t *pubkey_len);
 
 /**
  * Get the TPM permanent flags value
@@ -511,8 +511,8 @@ u32 tpm_get_pub_key_oiap(struct udevice *dev, u32 key_handle,
  * @param pflags	Place to put permanent flags
  * @return return code of the operation
  */
-u32 tpm_get_permanent_flags(struct udevice *dev,
-			    struct tpm_permanent_flags *pflags);
+u32 tpm1_get_permanent_flags(struct udevice *dev,
+			     struct tpm_permanent_flags *pflags);
 
 /**
  * Get the TPM permissions
@@ -521,7 +521,7 @@ u32 tpm_get_permanent_flags(struct udevice *dev,
  * @param perm		Returns permissions value
  * @return return code of the operation
  */
-u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm);
+u32 tpm1_get_permissions(struct udevice *dev, u32 index, u32 *perm);
 
 /**
  * Flush a resource with a given handle and type from the TPM
@@ -531,7 +531,7 @@ u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm);
  * @param resource_type                type of the resource
  * @return return code of the operation
  */
-u32 tpm_flush_specific(struct udevice *dev, u32 key_handle, u32 resource_type);
+u32 tpm1_flush_specific(struct udevice *dev, u32 key_handle, u32 resource_type);
 
 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
 /**
@@ -543,8 +543,8 @@ u32 tpm_flush_specific(struct udevice *dev, u32 key_handle, u32 resource_type);
  * @param[out] handle	The handle of the key (Non-null iff found)
  * @return 0 if key was found in TPM; != 0 if not.
  */
-u32 tpm_find_key_sha1(struct udevice *dev, const u8 auth[20],
-		      const u8 pubkey_digest[20], u32 *handle);
+u32 tpm1_find_key_sha1(struct udevice *dev, const u8 auth[20],
+		       const u8 pubkey_digest[20], u32 *handle);
 #endif /* CONFIG_TPM_LOAD_KEY_BY_SHA1 */
 
 /**
@@ -557,7 +557,7 @@ u32 tpm_find_key_sha1(struct udevice *dev, const u8 auth[20],
  * @param count		size of output buffer
  * @return return code of the operation
  */
-u32 tpm_get_random(struct udevice *dev, void *data, u32 count);
+u32 tpm1_get_random(struct udevice *dev, void *data, u32 count);
 
 /**
  * tpm_finalise_physical_presence() - Finalise physical presence
@@ -565,15 +565,15 @@ u32 tpm_get_random(struct udevice *dev, void *data, u32 count);
  * @param dev		TPM device
  * @return return code of the operation (0 = success)
  */
-u32 tpm_finalise_physical_presence(struct udevice *dev);
+u32 tpm1_finalise_physical_presence(struct udevice *dev);
 
 /**
- * tpm_nv_set_locked() - lock the non-volatile space
+ * tpm_nv_enable_locking() - lock the non-volatile space
  *
  * @param dev		TPM device
  * @return return code of the operation (0 = success)
  */
-u32 tpm_nv_set_locked(struct udevice *dev);
+u32 tpm1_nv_set_locked(struct udevice *dev);
 
 /**
  * tpm_set_global_lock() - set the global lock
@@ -589,6 +589,6 @@ u32 tpm_set_global_lock(struct udevice *dev);
  * @param dev		TPM device
  * @return return code of the operation (0 = success)
  */
-u32 tpm_resume(struct udevice *dev);
+u32 tpm1_resume(struct udevice *dev);
 
 #endif /* __TPM_V1_H */
diff --git a/lib/Makefile b/lib/Makefile
index edc1c3dd4f..c42d4e1233 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -53,6 +53,7 @@ endif
 obj-$(CONFIG_$(SPL_TPL_)TPM) += tpm-common.o
 ifeq ($(CONFIG_$(SPL_TPL_)TPM),y)
 obj-y += crc8.o
+obj-$(CONFIG_TPM) += tpm_api.o
 obj-$(CONFIG_TPM_V1) += tpm-v1.o
 obj-$(CONFIG_TPM_V2) += tpm-v2.o
 endif
diff --git a/lib/tpm-v1.c b/lib/tpm-v1.c
index a846fe00dd..8dc144080c 100644
--- a/lib/tpm-v1.c
+++ b/lib/tpm-v1.c
@@ -32,7 +32,7 @@ static struct session_data oiap_session = {0, };
 
 #endif /* CONFIG_TPM_AUTH_SESSIONS */
 
-u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode)
+u32 tpm1_startup(struct udevice *dev, enum tpm_startup_type mode)
 {
 	const u8 command[12] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x99, 0x0, 0x0,
@@ -48,12 +48,12 @@ u32 tpm_startup(struct udevice *dev, enum tpm_startup_type mode)
 	return tpm_sendrecv_command(dev, buf, NULL, NULL);
 }
 
-u32 tpm_resume(struct udevice *dev)
+u32 tpm1_resume(struct udevice *dev)
 {
-	return tpm_startup(dev, TPM_ST_STATE);
+	return tpm1_startup(dev, TPM_ST_STATE);
 }
 
-u32 tpm_self_test_full(struct udevice *dev)
+u32 tpm1_self_test_full(struct udevice *dev)
 {
 	const u8 command[10] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x50,
@@ -61,7 +61,7 @@ u32 tpm_self_test_full(struct udevice *dev)
 	return tpm_sendrecv_command(dev, command, NULL, NULL);
 }
 
-u32 tpm_continue_self_test(struct udevice *dev)
+u32 tpm1_continue_self_test(struct udevice *dev)
 {
 	const u8 command[10] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x53,
@@ -69,35 +69,33 @@ u32 tpm_continue_self_test(struct udevice *dev)
 	return tpm_sendrecv_command(dev, command, NULL, NULL);
 }
 
-u32 tpm_clear_and_reenable(struct udevice *dev)
+u32 tpm1_clear_and_reenable(struct udevice *dev)
 {
 	u32 ret;
 
 	log_info("TPM: Clear and re-enable\n");
-	ret = tpm_force_clear(dev);
+	ret = tpm1_force_clear(dev);
 	if (ret != TPM_SUCCESS) {
 		log_err("Can't initiate a force clear\n");
 		return ret;
 	}
 
-	if (tpm_get_version(dev) == TPM_V1) {
-		ret = tpm_physical_enable(dev);
-		if (ret != TPM_SUCCESS) {
-			log_err("TPM: Can't set enabled state\n");
-			return ret;
-		}
+	ret = tpm1_physical_enable(dev);
+	if (ret != TPM_SUCCESS) {
+		log_err("TPM: Can't set enabled state\n");
+		return ret;
+	}
 
-		ret = tpm_physical_set_deactivated(dev, 0);
-		if (ret != TPM_SUCCESS) {
-			log_err("TPM: Can't set deactivated state\n");
-			return ret;
-		}
+	ret = tpm1_physical_set_deactivated(dev, 0);
+	if (ret != TPM_SUCCESS) {
+		log_err("TPM: Can't set deactivated state\n");
+		return ret;
 	}
 
 	return TPM_SUCCESS;
 }
 
-u32 tpm_nv_define_space(struct udevice *dev, u32 index, u32 perm, u32 size)
+u32 tpm1_nv_define_space(struct udevice *dev, u32 index, u32 perm, u32 size)
 {
 	const u8 command[101] = {
 		0x0, 0xc1,		/* TPM_TAG */
@@ -140,12 +138,12 @@ u32 tpm_nv_define_space(struct udevice *dev, u32 index, u32 perm, u32 size)
 	return tpm_sendrecv_command(dev, buf, NULL, NULL);
 }
 
-u32 tpm_nv_set_locked(struct udevice *dev)
+u32 tpm1_nv_set_locked(struct udevice *dev)
 {
-	return tpm_nv_define_space(dev, TPM_NV_INDEX_LOCK, 0, 0);
+	return tpm1_nv_define_space(dev, TPM_NV_INDEX_LOCK, 0, 0);
 }
 
-u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count)
+u32 tpm1_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count)
 {
 	const u8 command[22] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0x16, 0x0, 0x0, 0x0, 0xcf,
@@ -179,8 +177,8 @@ u32 tpm_nv_read_value(struct udevice *dev, u32 index, void *data, u32 count)
 	return 0;
 }
 
-u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data,
-		       u32 length)
+u32 tpm1_nv_write_value(struct udevice *dev, u32 index, const void *data,
+			u32 length)
 {
 	const u8 command[256] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xcd,
@@ -210,13 +208,8 @@ u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data,
 	return 0;
 }
 
-uint32_t tpm_set_global_lock(struct udevice *dev)
-{
-	return tpm_nv_write_value(dev, TPM_NV_INDEX_0, NULL, 0);
-}
-
-u32 tpm_extend(struct udevice *dev, u32 index, const void *in_digest,
-	       void *out_digest)
+u32 tpm1_extend(struct udevice *dev, u32 index, const void *in_digest,
+		void *out_digest)
 {
 	const u8 command[34] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0x22, 0x0, 0x0, 0x0, 0x14,
@@ -247,7 +240,7 @@ u32 tpm_extend(struct udevice *dev, u32 index, const void *in_digest,
 	return 0;
 }
 
-u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count)
+u32 tpm1_pcr_read(struct udevice *dev, u32 index, void *data, size_t count)
 {
 	const u8 command[14] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, 0x15,
@@ -275,7 +268,7 @@ u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count)
 	return 0;
 }
 
-u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence)
+u32 tpm1_tsc_physical_presence(struct udevice *dev, u16 presence)
 {
 	const u8 command[12] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x0, 0x0,
@@ -291,7 +284,7 @@ u32 tpm_tsc_physical_presence(struct udevice *dev, u16 presence)
 	return tpm_sendrecv_command(dev, buf, NULL, NULL);
 }
 
-u32 tpm_finalise_physical_presence(struct udevice *dev)
+u32 tpm1_finalise_physical_presence(struct udevice *dev)
 {
 	const u8 command[12] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xc, 0x40, 0x0, 0x0, 0xa, 0x2, 0xa0,
@@ -300,7 +293,7 @@ u32 tpm_finalise_physical_presence(struct udevice *dev)
 	return tpm_sendrecv_command(dev, command, NULL, NULL);
 }
 
-u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count)
+u32 tpm1_read_pubek(struct udevice *dev, void *data, size_t count)
 {
 	const u8 command[30] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0x1e, 0x0, 0x0, 0x0, 0x7c,
@@ -331,7 +324,7 @@ u32 tpm_read_pubek(struct udevice *dev, void *data, size_t count)
 	return 0;
 }
 
-u32 tpm_force_clear(struct udevice *dev)
+u32 tpm1_force_clear(struct udevice *dev)
 {
 	const u8 command[10] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x5d,
@@ -340,7 +333,7 @@ u32 tpm_force_clear(struct udevice *dev)
 	return tpm_sendrecv_command(dev, command, NULL, NULL);
 }
 
-u32 tpm_physical_enable(struct udevice *dev)
+u32 tpm1_physical_enable(struct udevice *dev)
 {
 	const u8 command[10] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x6f,
@@ -349,7 +342,7 @@ u32 tpm_physical_enable(struct udevice *dev)
 	return tpm_sendrecv_command(dev, command, NULL, NULL);
 }
 
-u32 tpm_physical_disable(struct udevice *dev)
+u32 tpm1_physical_disable(struct udevice *dev)
 {
 	const u8 command[10] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x0, 0x70,
@@ -358,7 +351,7 @@ u32 tpm_physical_disable(struct udevice *dev)
 	return tpm_sendrecv_command(dev, command, NULL, NULL);
 }
 
-u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state)
+u32 tpm1_physical_set_deactivated(struct udevice *dev, u8 state)
 {
 	const u8 command[11] = {
 		0x0, 0xc1, 0x0, 0x0, 0x0, 0xb, 0x0, 0x0, 0x0, 0x72,
@@ -374,8 +367,8 @@ u32 tpm_physical_set_deactivated(struct udevice *dev, u8 state)
 	return tpm_sendrecv_command(dev, buf, NULL, NULL);
 }
 
-u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
-		       void *cap, size_t count)
+u32 tpm1_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
+			void *cap, size_t count)
 {
 	const u8 command[22] = {
 		0x0, 0xc1,		/* TPM_TAG */
@@ -414,8 +407,8 @@ u32 tpm_get_capability(struct udevice *dev, u32 cap_area, u32 sub_cap,
 	return 0;
 }
 
-u32 tpm_get_permanent_flags(struct udevice *dev,
-			    struct tpm_permanent_flags *pflags)
+u32 tpm1_get_permanent_flags(struct udevice *dev,
+			     struct tpm_permanent_flags *pflags)
 {
 	const u8 command[22] = {
 		0x0, 0xc1,		/* TPM_TAG */
@@ -453,7 +446,7 @@ u32 tpm_get_permanent_flags(struct udevice *dev,
 	return 0;
 }
 
-u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm)
+u32 tpm1_get_permissions(struct udevice *dev, u32 index, u32 *perm)
 {
 	const u8 command[22] = {
 		0x0, 0xc1,		/* TPM_TAG */
@@ -482,7 +475,7 @@ u32 tpm_get_permissions(struct udevice *dev, u32 index, u32 *perm)
 }
 
 #ifdef CONFIG_TPM_FLUSH_RESOURCES
-u32 tpm_flush_specific(struct udevice *dev, u32 key_handle, u32 resource_type)
+u32 tpm1_flush_specific(struct udevice *dev, u32 key_handle, u32 resource_type)
 {
 	const u8 command[18] = {
 		0x00, 0xc1,             /* TPM_TAG */
@@ -641,7 +634,7 @@ static u32 verify_response_auth(u32 command_code, const void *response,
 	return TPM_SUCCESS;
 }
 
-u32 tpm_terminate_auth_session(struct udevice *dev, u32 auth_handle)
+u32 tpm1_terminate_auth_session(struct udevice *dev, u32 auth_handle)
 {
 	const u8 command[18] = {
 		0x00, 0xc1,		/* TPM_TAG */
@@ -663,16 +656,16 @@ u32 tpm_terminate_auth_session(struct udevice *dev, u32 auth_handle)
 	return tpm_sendrecv_command(dev, request, NULL, NULL);
 }
 
-u32 tpm_end_oiap(struct udevice *dev)
+u32 tpm1_end_oiap(struct udevice *dev)
 {
 	u32 err = TPM_SUCCESS;
 
 	if (oiap_session.valid)
-		err = tpm_terminate_auth_session(dev, oiap_session.handle);
+		err = tpm1_terminate_auth_session(dev, oiap_session.handle);
 	return err;
 }
 
-u32 tpm_oiap(struct udevice *dev, u32 *auth_handle)
+u32 tpm1_oiap(struct udevice *dev, u32 *auth_handle)
 {
 	const u8 command[10] = {
 		0x00, 0xc1,		/* TPM_TAG */
@@ -686,7 +679,7 @@ u32 tpm_oiap(struct udevice *dev, u32 *auth_handle)
 	u32 err;
 
 	if (oiap_session.valid)
-		tpm_terminate_auth_session(dev, oiap_session.handle);
+		tpm1_terminate_auth_session(dev, oiap_session.handle);
 
 	err = tpm_sendrecv_command(dev, command, response, &response_length);
 	if (err)
@@ -702,9 +695,9 @@ u32 tpm_oiap(struct udevice *dev, u32 *auth_handle)
 	return 0;
 }
 
-u32 tpm_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key,
-		       size_t key_length, const void *parent_key_usage_auth,
-		       u32 *key_handle)
+u32 tpm1_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key,
+			size_t key_length, const void *parent_key_usage_auth,
+			u32 *key_handle)
 {
 	const u8 command[14] = {
 		0x00, 0xc2,		/* TPM_TAG */
@@ -723,7 +716,7 @@ u32 tpm_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key,
 	u32 err;
 
 	if (!oiap_session.valid) {
-		err = tpm_oiap(dev, NULL);
+		err = tpm1_oiap(dev, NULL);
 		if (err)
 			return err;
 	}
@@ -768,9 +761,9 @@ u32 tpm_load_key2_oiap(struct udevice *dev, u32 parent_handle, const void *key,
 	return 0;
 }
 
-u32 tpm_get_pub_key_oiap(struct udevice *dev, u32 key_handle,
-			 const void *usage_auth, void *pubkey,
-			 size_t *pubkey_len)
+u32 tpm1_get_pub_key_oiap(struct udevice *dev, u32 key_handle,
+			  const void *usage_auth, void *pubkey,
+			  size_t *pubkey_len)
 {
 	const u8 command[14] = {
 		0x00, 0xc2,		/* TPM_TAG */
@@ -788,7 +781,7 @@ u32 tpm_get_pub_key_oiap(struct udevice *dev, u32 key_handle,
 	u32 err;
 
 	if (!oiap_session.valid) {
-		err = tpm_oiap(dev, NULL);
+		err = tpm1_oiap(dev, NULL);
 		if (err)
 			return err;
 	}
@@ -834,8 +827,8 @@ u32 tpm_get_pub_key_oiap(struct udevice *dev, u32 key_handle,
 }
 
 #ifdef CONFIG_TPM_LOAD_KEY_BY_SHA1
-u32 tpm_find_key_sha1(struct udevice *dev, const u8 auth[20],
-		      const u8 pubkey_digest[20], u32 *handle)
+u32 tpm1_find_key_sha1(struct udevice *dev, const u8 auth[20],
+		       const u8 pubkey_digest[20], u32 *handle)
 {
 	u16 key_count;
 	u32 key_handles[10];
@@ -876,7 +869,7 @@ u32 tpm_find_key_sha1(struct udevice *dev, const u8 auth[20],
 
 #endif /* CONFIG_TPM_AUTH_SESSIONS */
 
-u32 tpm_get_random(struct udevice *dev, void *data, u32 count)
+u32 tpm1_get_random(struct udevice *dev, void *data, u32 count)
 {
 	const u8 command[14] = {
 		0x0, 0xc1,		/* TPM_TAG */