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https://github.com/ARM-software/arm-trusted-firmware.git
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b5c850d48d
The Marvell Armada 37xx SoCs-based platforms contain a bit awkward directory structure because the currently only one supported PLAT and PLAT_FAMILY are the same. Modify the latter to 'a3k' in order to improve it and keep plat/marvell/armada tree more consistent: plat/marvell/ ├── armada │ ├── a3k │ │ ├── a3700 [...] │ ├── a8k │ │ ├── a70x0 [...] Change-Id: I693a6ef88e6ce49a326a3328875c90bbc186066a Signed-off-by: Marcin Wojtas <mw@semihalf.com>
68 lines
2 KiB
ArmAsm
68 lines
2 KiB
ArmAsm
/*
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* Copyright (C) 2018 Marvell International Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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* https://spdx.org/licenses
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*/
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#include <asm_macros.S>
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#include <platform_def.h>
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.globl plat_secondary_cold_boot_setup
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.globl plat_get_my_entrypoint
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.globl plat_is_my_cpu_primary
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/* -----------------------------------------------------
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* void plat_secondary_cold_boot_setup (void);
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*
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* This function performs any platform specific actions
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* needed for a secondary cpu after a cold reset. Right
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* now this is a stub function.
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* -----------------------------------------------------
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*/
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func plat_secondary_cold_boot_setup
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mov x0, #0
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ret
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endfunc plat_secondary_cold_boot_setup
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/* ---------------------------------------------------------------------
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* unsigned long plat_get_my_entrypoint (void);
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*
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* Main job of this routine is to distinguish between cold and warm boot
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* For a cold boot, return 0.
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* For a warm boot, read the mailbox and return the address it contains.
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* A magic number is placed before entrypoint to avoid mistake caused by
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* uninitialized mailbox data area.
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* ---------------------------------------------------------------------
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*/
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func plat_get_my_entrypoint
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/* Read first word and compare it with magic num */
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mov_imm x0, PLAT_MARVELL_MAILBOX_BASE
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ldr x1, [x0]
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mov_imm x2, PLAT_MARVELL_MAILBOX_MAGIC_NUM
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cmp x1, x2
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/* If compare failed, return 0, i.e. cold boot */
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beq entrypoint
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mov x0, #0
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ret
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entrypoint:
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/* Second word contains the jump address */
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add x0, x0, #8
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ldr x0, [x0]
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ret
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endfunc plat_get_my_entrypoint
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/* -----------------------------------------------------
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* unsigned int plat_is_my_cpu_primary (void);
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*
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* Find out whether the current cpu is the primary
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* cpu.
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* -----------------------------------------------------
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*/
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func plat_is_my_cpu_primary
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mrs x0, mpidr_el1
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and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
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cmp x0, #MVEBU_PRIMARY_CPU
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cset w0, eq
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ret
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endfunc plat_is_my_cpu_primary
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