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https://github.com/ARM-software/arm-trusted-firmware.git
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1e66bacb71
Add supprot for Marvell platforms based on Armada-37xx SoC. This includes support for the official Armada-3720 modular development board and EspressoBin community board. The Armada-37xx SoC contains dual Cortex-A53 Application CPU, single secure CPU (Cortex-M3) and the following interfaces: - SATA 3.0 - USB 3.0 and USB 2.0 - PCIe - SDIO (supports boot from eMMC) - SPI - UART - I2c - Gigabit Ethernet Signed-off-by: Konstantin Porotchkin <kostap@marvell.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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