Adding upstream version 2.10.0+dfsg.upstream/2.10.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/include/lib/extensions/sme.h b/include/lib/extensions/sme.h
new file mode 100644
index 0000000..bd7948e
--- /dev/null
+++ b/include/lib/extensions/sme.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SME_H
+#define SME_H
+
+#include <stdbool.h>
+#include <context.h>
+
+/*
+ * Maximum value of LEN field in SMCR_ELx. This is different than the maximum
+ * supported value which is platform dependent. In the first version of SME the
+ * LEN field is limited to 4 bits but will be expanded in future iterations.
+ * To support different versions, the code that discovers the supported vector
+ * lengths will write the max value into SMCR_ELx then read it back to see how
+ * many bits are implemented.
+ */
+#define SME_SMCR_LEN_MAX	U(0x1FF)
+
+#if ENABLE_SME_FOR_NS
+void sme_init_el3(void);
+void sme_init_el2_unused(void);
+void sme_enable(cpu_context_t *context);
+void sme_disable(cpu_context_t *context);
+void sme_enable_per_world(per_world_context_t *per_world_ctx);
+void sme_disable_per_world(per_world_context_t *per_world_ctx);
+#else
+static inline void sme_init_el3(void)
+{
+}
+static inline void sme_init_el2_unused(void)
+{
+}
+static inline void sme_enable(cpu_context_t *context)
+{
+}
+static inline void sme_disable(cpu_context_t *context)
+{
+}
+static inline void sme_enable_per_world(per_world_context_t *per_world_ctx)
+{
+}
+static inline void sme_disable_per_world(per_world_context_t *per_world_ctx)
+{
+}
+#endif /* ENABLE_SME_FOR_NS */
+
+#endif /* SME_H */