diff options
Diffstat (limited to 'plat/socionext/uniphier/uniphier_helpers.S')
| -rw-r--r-- | plat/socionext/uniphier/uniphier_helpers.S | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/plat/socionext/uniphier/uniphier_helpers.S b/plat/socionext/uniphier/uniphier_helpers.S new file mode 100644 index 00000000..105cf9e0 --- /dev/null +++ b/plat/socionext/uniphier/uniphier_helpers.S @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <asm_macros.S> +#include <platform_def.h> + + .global uniphier_calc_core_pos + .global plat_my_core_pos + .globl platform_mem_init + +/* + * unsigned int uniphier_calc_core_pos(u_register_t mpidr) + * core_pos = (cluster_id * max_cpus_per_cluster) + core_id + */ +func uniphier_calc_core_pos + and x1, x0, #MPIDR_CPU_MASK + and x0, x0, #MPIDR_CLUSTER_MASK + lsr x0, x0, #MPIDR_AFFINITY_BITS + mov x2, #UNIPHIER_MAX_CPUS_PER_CLUSTER + madd x0, x0, x2, x1 + ret +endfunc uniphier_calc_core_pos + +func plat_my_core_pos + mrs x0, mpidr_el1 + b uniphier_calc_core_pos +endfunc plat_my_core_pos + +func platform_mem_init + ret +endfunc platform_mem_init |