| /* |
| * Copyright (C) 2018 Marvell International Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| * https://spdx.org/licenses |
| */ |
| |
| #include <asm_macros.S> |
| #include <platform_def.h> |
| |
| .globl plat_secondary_cold_boot_setup |
| .globl plat_get_my_entrypoint |
| .globl plat_is_my_cpu_primary |
| |
| /* ----------------------------------------------------- |
| * void plat_secondary_cold_boot_setup (void); |
| * |
| * This function performs any platform specific actions |
| * needed for a secondary cpu after a cold reset. Right |
| * now this is a stub function. |
| * ----------------------------------------------------- |
| */ |
| func plat_secondary_cold_boot_setup |
| mov x0, #0 |
| ret |
| endfunc plat_secondary_cold_boot_setup |
| |
| /* --------------------------------------------------------------------- |
| * unsigned long plat_get_my_entrypoint (void); |
| * |
| * Main job of this routine is to distinguish between cold and warm boot |
| * For a cold boot, return 0. |
| * For a warm boot, read the mailbox and return the address it contains. |
| * A magic number is placed before entrypoint to avoid mistake caused by |
| * uninitialized mailbox data area. |
| * --------------------------------------------------------------------- |
| */ |
| func plat_get_my_entrypoint |
| /* Read first word and compare it with magic num */ |
| mov_imm x0, PLAT_MARVELL_MAILBOX_BASE |
| ldr x1, [x0] |
| mov_imm x2, PLAT_MARVELL_MAILBOX_MAGIC_NUM |
| cmp x1, x2 |
| /* If compare failed, return 0, i.e. cold boot */ |
| beq entrypoint |
| mov x0, #0 |
| ret |
| entrypoint: |
| /* Second word contains the jump address */ |
| add x0, x0, #8 |
| ldr x0, [x0] |
| ret |
| endfunc plat_get_my_entrypoint |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_is_my_cpu_primary (void); |
| * |
| * Find out whether the current cpu is the primary |
| * cpu. |
| * ----------------------------------------------------- |
| */ |
| func plat_is_my_cpu_primary |
| mrs x0, mpidr_el1 |
| and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) |
| cmp x0, #MVEBU_PRIMARY_CPU |
| cset w0, eq |
| ret |
| endfunc plat_is_my_cpu_primary |
