| /* |
| * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <asm_macros.S> |
| #include <drivers/console.h> |
| #include <platform_def.h> |
| |
| .weak plat_my_core_pos |
| .globl plat_crash_console_init |
| .globl plat_crash_console_putc |
| .globl plat_crash_console_flush |
| .weak platform_mem_init |
| .globl plat_ls_calc_core_pos |
| |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_my_core_pos(void) |
| * This function uses the plat_ls_calc_core_pos() |
| * definition to get the index of the calling CPU. |
| * ----------------------------------------------------- |
| */ |
| func plat_my_core_pos |
| mrs x0, mpidr_el1 |
| b plat_ls_calc_core_pos |
| endfunc plat_my_core_pos |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_ls_calc_core_pos(u_register_t mpidr) |
| * Helper function to calculate the core position. |
| * With this function: CorePos = (ClusterId * 4) + |
| * CoreId |
| * ----------------------------------------------------- |
| */ |
| func plat_ls_calc_core_pos |
| and x1, x0, #MPIDR_CPU_MASK |
| and x0, x0, #MPIDR_CLUSTER_MASK |
| add x0, x1, x0, LSR #6 |
| ret |
| endfunc plat_ls_calc_core_pos |
| |
| /* --------------------------------------------- |
| * int plat_crash_console_init(void) |
| * Function to initialize the crash console |
| * without a C Runtime to print crash report. |
| * Clobber list : x0 - x4 |
| * --------------------------------------------- |
| */ |
| |
| /* ----------------------------------------------------- |
| * int plat_crash_console_init(void) |
| * Use normal console by default. Switch it to crash |
| * mode so serial consoles become active again. |
| * NOTE: This default implementation will only work for |
| * crashes that occur after a normal console (marked |
| * valid for the crash state) has been registered with |
| * the console framework. To debug crashes that occur |
| * earlier, the platform has to override these functions |
| * with an implementation that initializes a console |
| * driver with hardcoded parameters. See |
| * docs/porting-guide.rst for more information. |
| * ----------------------------------------------------- |
| */ |
| func plat_crash_console_init |
| #if defined(IMAGE_BL1) |
| /* |
| * BL1 code can possibly crash so early that the data segment is not yet |
| * accessible. Don't risk undefined behavior by trying to run the normal |
| * console framework. Platforms that want to debug BL1 will need to |
| * override this with custom functions that can run from registers only. |
| */ |
| mov x0, #0 |
| ret |
| #else /* IMAGE_BL1 */ |
| mov x3, x30 |
| mov x0, #CONSOLE_FLAG_CRASH |
| bl console_switch_state |
| mov x0, #1 |
| ret x3 |
| #endif |
| endfunc plat_crash_console_init |
| |
| /* ----------------------------------------------------- |
| * void plat_crash_console_putc(int character) |
| * Output through the normal console by default. |
| * ----------------------------------------------------- |
| */ |
| func plat_crash_console_putc |
| b console_putc |
| endfunc plat_crash_console_putc |
| |
| /* ----------------------------------------------------- |
| * void plat_crash_console_flush(void) |
| * Flush normal console by default. |
| * ----------------------------------------------------- |
| */ |
| func plat_crash_console_flush |
| b console_flush |
| endfunc plat_crash_console_flush |
| |
| /* --------------------------------------------------------------------- |
| * We don't need to carry out any memory initialization on LS |
| * platforms. The Secure SRAM is accessible straight away. |
| * --------------------------------------------------------------------- |
| */ |
| func platform_mem_init |
| ret |
| endfunc platform_mem_init |
