| /* |
| * Copyright (c) 2013-2014, 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> |
| |
| |
| .macro func_prologue |
| stp x29, x30, [sp, #-0x10]! |
| mov x29,sp |
| .endm |
| |
| .macro func_epilogue |
| ldp x29, x30, [sp], #0x10 |
| .endm |
| |
| |
| .macro dcache_line_size reg, tmp |
| mrs \tmp, ctr_el0 |
| ubfx \tmp, \tmp, #16, #4 |
| mov \reg, #4 |
| lsl \reg, \reg, \tmp |
| .endm |
| |
| |
| .macro icache_line_size reg, tmp |
| mrs \tmp, ctr_el0 |
| and \tmp, \tmp, #0xf |
| mov \reg, #4 |
| lsl \reg, \reg, \tmp |
| .endm |
| |
| |
| .macro smc_check label |
| mrs x0, esr_el3 |
| ubfx x0, x0, #ESR_EC_SHIFT, #ESR_EC_LENGTH |
| cmp x0, #EC_AARCH64_SMC |
| b.ne $label |
| .endm |
| |
| |
| /* |
| * This macro verifies that the a given vector doesn't exceed the |
| * architectural limit of 32 instructions. This is meant to be placed |
| * immedately after the last instruction in the vector. It takes the |
| * vector entry as the parameter |
| */ |
| .macro check_vector_size since |
| .if (. - \since) > (32 * 4) |
| .error "Vector exceeds 32 instructions" |
| .endif |
| .endm |
| |
| /* |
| * This macro is used to create a function label and place the |
| * code into a separate text section based on the function name |
| * to enable elimination of unused code during linking |
| */ |
| .macro func _name |
| .section .text.\_name, "ax" |
| .type \_name, %function |
| \_name: |
| .endm |
| |
| /* --------------------------------------------- |
| * Find the type of reset and jump to handler |
| * if present. If the handler is null then it is |
| * a cold boot. The primary cpu will set up the |
| * platform while the secondaries wait for |
| * their turn to be woken up |
| * --------------------------------------------- |
| */ |
| .macro wait_for_entrypoint |
| wait_for_entrypoint: |
| mrs x0, mpidr_el1 |
| bl platform_get_entrypoint |
| cbnz x0, do_warm_boot |
| mrs x0, mpidr_el1 |
| bl platform_is_primary_cpu |
| cbnz x0, do_cold_boot |
| |
| /* --------------------------------------------- |
| * Perform any platform specific secondary cpu |
| * actions |
| * --------------------------------------------- |
| */ |
| bl plat_secondary_cold_boot_setup |
| b wait_for_entrypoint |
| |
| do_warm_boot: |
| /* --------------------------------------------- |
| * Jump to BL31 for all warm boot init. |
| * --------------------------------------------- |
| */ |
| blr x0 |
| |
| do_cold_boot: |
| .endm |
| |
| /* |
| * This macro declares an array of 1 or more stacks, properly |
| * aligned and in the requested section |
| */ |
| #define STACK_ALIGN 6 |
| |
| .macro declare_stack _name, _section, _size, _count |
| .if ((\_size & ((1 << STACK_ALIGN) - 1)) <> 0) |
| .error "Stack size not correctly aligned" |
| .endif |
| .section \_section, "aw", %nobits |
| .align STACK_ALIGN |
| \_name: |
| .space ((\_count) * (\_size)), 0 |
| .endm |
| |
| /* |
| * This macro calculates the base address of an MP stack using the |
| * platform_get_core_pos() index, the name of the stack storage and |
| * the size of each stack |
| * In: X0 = MPIDR of CPU whose stack is wanted |
| * Out: X0 = physical address of stack base |
| * Clobber: X30, X1, X2 |
| */ |
| .macro get_mp_stack _name, _size |
| bl platform_get_core_pos |
| ldr x2, =(\_name + \_size) |
| mov x1, #\_size |
| madd x0, x0, x1, x2 |
| .endm |
| |
| /* |
| * This macro calculates the base address of a UP stack using the |
| * name of the stack storage and the size of the stack |
| * Out: X0 = physical address of stack base |
| */ |
| .macro get_up_stack _name, _size |
| ldr x0, =(\_name + \_size) |
| .endm |