117 lines
2.9 KiB
ArmAsm
117 lines
2.9 KiB
ArmAsm
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/*
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* Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <arch.h>
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#include <asm_macros.S>
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#include <cpu_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 platform_is_primary_cpu
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.globl plat_is_my_cpu_primary
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.globl plat_my_core_pos
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.globl plat_crash_console_init
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.globl plat_crash_console_putc
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.globl plat_crash_console_flush
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.globl platform_mem_init
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.globl plat_get_my_entrypoint
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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 e.g
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* mark the cpu's presence, mechanism to place it in a
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* holding pen etc.
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* -----------------------------------------------------
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*/
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func plat_secondary_cold_boot_setup
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/* Wait until the it gets reset signal from rstmgr gets populated */
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poll_mailbox:
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wfi
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mov_imm x0, PLAT_SEC_ENTRY
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ldr x1, [x0]
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mov_imm x2, PLAT_CPUID_RELEASE
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ldr x3, [x2]
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mrs x4, mpidr_el1
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and x4, x4, #0xff
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cmp x3, x4
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b.ne poll_mailbox
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br x1
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endfunc plat_secondary_cold_boot_setup
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func platform_is_primary_cpu
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and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
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cmp x0, #PLAT_PRIMARY_CPU
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cset x0, eq
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ret
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endfunc platform_is_primary_cpu
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func plat_is_my_cpu_primary
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mrs x0, mpidr_el1
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b platform_is_primary_cpu
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endfunc plat_is_my_cpu_primary
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func plat_my_core_pos
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mrs x0, mpidr_el1
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and x1, x0, #MPIDR_CPU_MASK
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and x0, x0, #MPIDR_CLUSTER_MASK
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add x0, x1, x0, LSR #6
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ret
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endfunc plat_my_core_pos
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func plat_get_my_entrypoint
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mov_imm x1, PLAT_SEC_ENTRY
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ldr x0, [x1]
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ret
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endfunc plat_get_my_entrypoint
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/* ---------------------------------------------
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* int plat_crash_console_init(void)
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* Function to initialize the crash console
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* without a C Runtime to print crash report.
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* Clobber list : x0, x1, x2
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* ---------------------------------------------
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*/
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func plat_crash_console_init
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mov_imm x0, PLAT_UART0_BASE
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mov_imm x1, PLAT_UART_CLOCK
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mov_imm x2, PLAT_BAUDRATE
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b console_16550_core_init
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endfunc plat_crash_console_init
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/* ---------------------------------------------
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* int plat_crash_console_putc(void)
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* Function to print a character on the crash
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* console without a C Runtime.
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* Clobber list : x1, x2
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* ---------------------------------------------
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*/
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func plat_crash_console_putc
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mov_imm x1, PLAT_UART0_BASE
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b console_16550_core_putc
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endfunc plat_crash_console_putc
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func plat_crash_console_flush
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mov_imm x0, CRASH_CONSOLE_BASE
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b console_16550_core_flush
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endfunc plat_crash_console_flush
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/* --------------------------------------------------------
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* void platform_mem_init (void);
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*
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* Any memory init, relocation to be done before the
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* platform boots. Called very early in the boot process.
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* --------------------------------------------------------
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*/
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func platform_mem_init
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mov x0, #0
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ret
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endfunc platform_mem_init
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