diff options
Diffstat (limited to 'services/std_svc/rmmd/rmmd_initial_context.h')
| -rw-r--r-- | services/std_svc/rmmd/rmmd_initial_context.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/services/std_svc/rmmd/rmmd_initial_context.h b/services/std_svc/rmmd/rmmd_initial_context.h new file mode 100644 index 000000000..d7a743d8e --- /dev/null +++ b/services/std_svc/rmmd/rmmd_initial_context.h @@ -0,0 +1,33 @@ +/* + * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef RMMD_INITIAL_CONTEXT_H +#define RMMD_INITIAL_CONTEXT_H + +#include <arch.h> + +/* + * SPSR_EL2 + * M=0x9 (0b1001 EL2h) + * M[4]=0 + * DAIF=0xF Exceptions masked on entry. + * BTYPE=0 BTI not yet supported. + * SSBS=0 Not yet supported. + * IL=0 Not an illegal exception return. + * SS=0 Not single stepping. + * PAN=1 RMM shouldn't access realm memory. + * UAO=0 + * DIT=0 + * TCO=0 + * NZCV=0 + */ +#define REALM_SPSR_EL2 ( \ + SPSR_M_EL2H | \ + (0xF << SPSR_DAIF_SHIFT) | \ + SPSR_PAN_BIT \ + ) + +#endif /* RMMD_INITIAL_CONTEXT_H */ |