SST: Rename SST(Secure STorage) to PS(Protected Storage)
This patches renames SST(Secure STorage) to
PS(Protected Storage) for files, folders and any contents
in files to align with the PSA Storage API spec.
Change-Id: Icf991f59512875780c159f22737b521b3b2d4924
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
diff --git a/interface/src/tfm_ps_ipc_api.c b/interface/src/tfm_ps_ipc_api.c
new file mode 100644
index 0000000..7cc3a63
--- /dev/null
+++ b/interface/src/tfm_ps_ipc_api.c
@@ -0,0 +1,183 @@
+/*
+ * Copyright (c) 2017-2020, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include "psa/protected_storage.h"
+
+#include "tfm_ns_interface.h"
+#include "psa_manifest/sid.h"
+
+#define IOVEC_LEN(x) (uint32_t)(sizeof(x)/sizeof(x[0]))
+
+psa_status_t psa_ps_set(psa_storage_uid_t uid,
+ size_t data_length,
+ const void *p_data,
+ psa_storage_create_flags_t create_flags)
+{
+ psa_status_t status;
+ psa_handle_t handle;
+
+ psa_invec in_vec[] = {
+ { .base = &uid, .len = sizeof(uid) },
+ { .base = p_data, .len = data_length },
+ { .base = &create_flags, .len = sizeof(create_flags) }
+ };
+
+ handle = psa_connect(TFM_PS_SET_SID, TFM_PS_SET_VERSION);
+ if (!PSA_HANDLE_IS_VALID(handle)) {
+ return PSA_ERROR_GENERIC_ERROR;
+ }
+
+ status = psa_call(handle, PSA_IPC_CALL, in_vec, IOVEC_LEN(in_vec),
+ NULL, 0);
+
+ psa_close(handle);
+
+ /* A parameter with a buffer pointer pointer that has data length longer
+ * than maximum permitted is treated as a secure violation.
+ * TF-M framework rejects the request with TFM_ERROR_INVALID_PARAMETER.
+ */
+ if (status == (psa_status_t)TFM_ERROR_INVALID_PARAMETER) {
+ return PSA_ERROR_INVALID_ARGUMENT;
+ }
+
+ return status;
+}
+
+psa_status_t psa_ps_get(psa_storage_uid_t uid,
+ size_t data_offset,
+ size_t data_size,
+ void *p_data,
+ size_t *p_data_length)
+{
+ psa_status_t status;
+ psa_handle_t handle;
+
+ psa_invec in_vec[] = {
+ { .base = &uid, .len = sizeof(uid) },
+ { .base = &data_offset, .len = sizeof(data_offset) }
+ };
+
+ psa_outvec out_vec[] = {
+ { .base = p_data, .len = data_size }
+ };
+
+ if (p_data_length == NULL) {
+ return PSA_ERROR_INVALID_ARGUMENT;
+ }
+
+ handle = psa_connect(TFM_PS_GET_SID, TFM_PS_GET_VERSION);
+ if (!PSA_HANDLE_IS_VALID(handle)) {
+ return PSA_ERROR_GENERIC_ERROR;
+ }
+
+ status = psa_call(handle, PSA_IPC_CALL, in_vec, IOVEC_LEN(in_vec), out_vec,
+ IOVEC_LEN(out_vec));
+
+ psa_close(handle);
+
+ *p_data_length = out_vec[0].len;
+
+ return status;
+}
+
+psa_status_t psa_ps_get_info(psa_storage_uid_t uid,
+ struct psa_storage_info_t *p_info)
+{
+ psa_status_t status;
+ psa_handle_t handle;
+
+ psa_invec in_vec[] = {
+ { .base = &uid, .len = sizeof(uid) }
+ };
+
+ psa_outvec out_vec[] = {
+ { .base = p_info, .len = sizeof(*p_info) }
+ };
+
+ handle = psa_connect(TFM_PS_GET_INFO_SID, TFM_PS_GET_INFO_VERSION);
+ if (!PSA_HANDLE_IS_VALID(handle)) {
+ return PSA_ERROR_GENERIC_ERROR;
+ }
+
+ status = psa_call(handle, PSA_IPC_CALL, in_vec, IOVEC_LEN(in_vec), out_vec,
+ IOVEC_LEN(out_vec));
+
+ psa_close(handle);
+
+ return status;
+}
+
+psa_status_t psa_ps_remove(psa_storage_uid_t uid)
+{
+ psa_status_t status;
+ psa_handle_t handle;
+
+ psa_invec in_vec[] = {
+ { .base = &uid, .len = sizeof(uid) }
+ };
+
+
+ handle = psa_connect(TFM_PS_REMOVE_SID, TFM_PS_REMOVE_VERSION);
+ if (!PSA_HANDLE_IS_VALID(handle)) {
+ return PSA_ERROR_GENERIC_ERROR;
+ }
+
+ status = psa_call(handle, PSA_IPC_CALL, in_vec, IOVEC_LEN(in_vec),
+ NULL, 0);
+
+ psa_close(handle);
+
+ return status;
+}
+
+psa_status_t psa_ps_create(psa_storage_uid_t uid, size_t size,
+ psa_storage_create_flags_t create_flags)
+{
+ (void)uid;
+ (void)size;
+ (void)create_flags;
+
+ return PSA_ERROR_NOT_SUPPORTED;
+}
+
+psa_status_t psa_ps_set_extended(psa_storage_uid_t uid, size_t data_offset,
+ size_t data_length, const void *p_data)
+{
+ (void)uid;
+ (void)data_offset;
+ (void)data_length;
+ (void)p_data;
+
+ return PSA_ERROR_NOT_SUPPORTED;
+}
+
+uint32_t psa_ps_get_support(void)
+{
+ /* Initialise support_flags to a sensible default, to avoid returning an
+ * uninitialised value in case the secure function fails.
+ */
+ uint32_t support_flags = 0;
+ psa_handle_t handle;
+
+ psa_outvec out_vec[] = {
+ { .base = &support_flags, .len = sizeof(support_flags) }
+ };
+
+ /* The PSA API does not return an error, so any error from TF-M is
+ * ignored.
+ */
+ handle = psa_connect(TFM_PS_GET_SUPPORT_SID, TFM_PS_GET_SUPPORT_VERSION);
+ if (!PSA_HANDLE_IS_VALID(handle)) {
+ return support_flags;
+ }
+
+ (void)psa_call(handle, PSA_IPC_CALL, NULL, 0, out_vec, IOVEC_LEN(out_vec));
+
+ psa_close(handle);
+
+ return support_flags;
+}