| /* |
| * Copyright (c) 2024, Mediatek Inc. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <assert_macros.S> |
| #include <cpu_macros.S> |
| #include <platform_def.h> |
| #if CONFIG_MTK_MCUSYS |
| #include <mcucfg.h> |
| #endif |
| |
| /* |
| * Declare as weak function so that can be |
| * overwritten by platform helpers |
| */ |
| .weak platform_mem_init |
| .weak plat_core_pos_by_mpidr |
| .weak plat_my_core_pos |
| .weak plat_mediatek_calc_core_pos |
| .global plat_mpidr_by_core_pos |
| .global plat_reset_handler |
| |
| /* ----------------------------------------------------- |
| * unsigned long plat_mpidr_by_core_pos(uint32_t cpuid) |
| * This function calcuate mpidr by cpu pos if cpu |
| * topology is linear. |
| * |
| * Clobbers: x0-x1 |
| * ----------------------------------------------------- |
| */ |
| func plat_mpidr_by_core_pos |
| lsl x0, x0, #MPIDR_AFF1_SHIFT |
| mrs x1, mpidr_el1 |
| and x1, x1, #MPIDR_MT_MASK |
| orr x0, x0, x1 |
| ret |
| endfunc plat_mpidr_by_core_pos |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_my_core_pos(void) |
| * This function uses the plat_arm_calc_core_pos() |
| * definition to get the index of the calling CPU. |
| * ----------------------------------------------------- |
| */ |
| func plat_my_core_pos |
| mrs x0, mpidr_el1 |
| b plat_mediatek_calc_core_pos |
| endfunc plat_my_core_pos |
| |
| /* ----------------------------------------------------- |
| * int plat_mediatek_calc_core_pos(u_register_t mpidr); |
| * |
| * In ARMv8.2, AFF2 is cluster id, AFF1 is core id and |
| * AFF0 is thread id. There is only one cluster in ARMv8.2 |
| * and one thread in current implementation. |
| * |
| * With this function: CorePos = CoreID (AFF1) |
| * we do it with x0 = (x0 >> 8) & 0xff |
| * ----------------------------------------------------- |
| */ |
| func plat_mediatek_calc_core_pos |
| b plat_core_pos_by_mpidr |
| endfunc plat_mediatek_calc_core_pos |
| |
| /* ------------------------------------------------------ |
| * int32_t plat_core_pos_by_mpidr(u_register_t mpidr) |
| * |
| * This function implements a part of the critical |
| * interface between the psci generic layer and the |
| * platform that allows the former to query the platform |
| * to convert an MPIDR to a unique linear index. |
| * |
| * Clobbers: x0-x1 |
| * ------------------------------------------------------ |
| */ |
| func plat_core_pos_by_mpidr |
| mov x1, #MPIDR_AFFLVL_MASK |
| and x0, x1, x0, lsr #MPIDR_AFF1_SHIFT |
| ret |
| endfunc plat_core_pos_by_mpidr |
| |
| /* -------------------------------------------------------- |
| * void platform_mem_init (void); |
| * |
| * Any memory init, relocation to be done before the |
| * platform boots. Called very early in the boot process. |
| * -------------------------------------------------------- |
| */ |
| func platform_mem_init |
| ret |
| endfunc platform_mem_init |
| |
| func plat_reset_handler |
| #if CONFIG_MTK_MCUSYS |
| mov x10, x30 |
| bl plat_my_core_pos |
| mov x30, x10 |
| mov w1, #0x1 |
| lsl w1, w1, w0 |
| ldr x0, =CPC_MCUSYS_CPU_ON_SW_HINT_SET |
| str w1, [x0] |
| dsb sy |
| #endif |
| |
| ret |
| endfunc plat_reset_handler |