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/*
* Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arch.h>
#include <asm_macros.S>
#include <assert_macros.S>
#include <platform_def.h>
.globl plat_my_core_pos
.globl plat_get_my_entrypoint
.globl platform_mem_init
.globl plat_qemu_calc_core_pos
.globl plat_crash_console_init
.globl plat_crash_console_putc
.globl plat_secondary_cold_boot_setup
.globl plat_get_my_entrypoint
.globl plat_is_my_cpu_primary
func plat_my_core_pos
mrs x0, mpidr_el1
b plat_qemu_calc_core_pos
endfunc plat_my_core_pos
/*
* unsigned int plat_qemu_calc_core_pos(u_register_t mpidr);
* With this function: CorePos = (ClusterId * 4) + CoreId
*/
func plat_qemu_calc_core_pos
and x1, x0, #MPIDR_CPU_MASK
and x0, x0, #MPIDR_CLUSTER_MASK
add x0, x1, x0, LSR #6
ret
endfunc plat_qemu_calc_core_pos
/* -----------------------------------------------------
* 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, #QEMU_PRIMARY_CPU
cset w0, eq
ret
endfunc 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 e.g
* mark the cpu's presence, mechanism to place it in a
* holding pen etc.
* -----------------------------------------------------
*/
func plat_secondary_cold_boot_setup
/* Calculate address of our hold entry */
bl plat_my_core_pos
mov_imm x2, PLAT_QEMU_HOLD_BASE
/* Wait until we have a go */
poll_mailbox:
ldr x1, [x2, x0]
cbz x1, 1f
mov_imm x0, PLAT_QEMU_TRUSTED_MAILBOX_BASE
ldr x1, [x0]
br x1
1:
wfe
b poll_mailbox
endfunc plat_secondary_cold_boot_setup
func plat_get_my_entrypoint
/* TODO support warm boot */
mov x0, #0
ret
endfunc plat_get_my_entrypoint
func platform_mem_init
ret
endfunc platform_mem_init
/* ---------------------------------------------
* int plat_crash_console_init(void)
* Function to initialize the crash console
* without a C Runtime to print crash report.
* Clobber list : x0, x1, x2
* ---------------------------------------------
*/
func plat_crash_console_init
mov_imm x0, PLAT_QEMU_CRASH_UART_BASE
mov_imm x1, PLAT_QEMU_CRASH_UART_CLK_IN_HZ
mov_imm x2, PLAT_QEMU_CONSOLE_BAUDRATE
b console_core_init
endfunc plat_crash_console_init
/* ---------------------------------------------
* int plat_crash_console_putc(int c)
* Function to print a character on the crash
* console without a C Runtime.
* Clobber list : x1, x2
* ---------------------------------------------
*/
func plat_crash_console_putc
mov_imm x1, PLAT_QEMU_CRASH_UART_BASE
b console_core_putc
endfunc plat_crash_console_putc
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