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Diffstat (limited to '')
| -rw-r--r-- | plat/mediatek/mt8183/aarch64/plat_helpers.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/plat/mediatek/mt8183/aarch64/plat_helpers.S b/plat/mediatek/mt8183/aarch64/plat_helpers.S new file mode 100644 index 0000000..5c39633 --- /dev/null +++ b/plat/mediatek/mt8183/aarch64/plat_helpers.S @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <arch.h> +#include <asm_macros.S> +#include <platform_def.h> + + .globl plat_is_my_cpu_primary + .globl plat_my_core_pos + +func plat_is_my_cpu_primary + mrs x0, mpidr_el1 + and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) + cmp x0, #PLAT_PRIMARY_CPU + cset x0, eq + ret +endfunc plat_is_my_cpu_primary + + /* ----------------------------------------------------- + * unsigned int plat_my_core_pos(void); + * + * result: CorePos = CoreId + (ClusterId << 2) + * ----------------------------------------------------- + */ +func plat_my_core_pos + mrs x0, mpidr_el1 + and x1, x0, #MPIDR_CPU_MASK + and x0, x0, #MPIDR_CLUSTER_MASK + add x0, x1, x0, LSR #6 + ret +endfunc plat_my_core_pos |