| /* |
| * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <console.h> |
| #include <platform_def.h> |
| |
| .weak plat_report_exception |
| .weak plat_crash_console_init |
| .weak plat_crash_console_putc |
| .weak plat_crash_console_flush |
| .weak plat_reset_handler |
| .weak plat_disable_acp |
| .weak bl1_plat_prepare_exit |
| .weak plat_panic_handler |
| .weak bl31_plat_enable_mmu |
| .weak bl32_plat_enable_mmu |
| |
| .weak plat_handle_uncontainable_ea |
| .weak plat_handle_double_fault |
| .weak plat_handle_el3_ea |
| |
| #if !ENABLE_PLAT_COMPAT |
| .globl platform_get_core_pos |
| |
| #define MPIDR_RES_BIT_MASK 0xff000000 |
| |
| /* ------------------------------------------------------------------ |
| * int platform_get_core_pos(int mpidr) |
| * Returns the CPU index of the CPU specified by mpidr. This is |
| * defined when platform compatibility is disabled to enable Trusted |
| * Firmware components like SPD using the old platform API to work. |
| * This API is deprecated and it assumes that the mpidr specified is |
| * that of a valid and present CPU. Instead, plat_my_core_pos() |
| * should be used for CPU index of the current CPU and |
| * plat_core_pos_by_mpidr() should be used for CPU index of a |
| * CPU specified by its mpidr. |
| * ------------------------------------------------------------------ |
| */ |
| func_deprecated platform_get_core_pos |
| bic x0, x0, #MPIDR_RES_BIT_MASK |
| mrs x1, mpidr_el1 |
| bic x1, x1, #MPIDR_RES_BIT_MASK |
| cmp x0, x1 |
| beq plat_my_core_pos |
| b platform_core_pos_helper |
| endfunc_deprecated platform_get_core_pos |
| #endif |
| |
| /* ----------------------------------------------------- |
| * Placeholder function which should be redefined by |
| * each platform. |
| * ----------------------------------------------------- |
| */ |
| func plat_report_exception |
| ret |
| endfunc plat_report_exception |
| |
| #if MULTI_CONSOLE_API |
| /* ----------------------------------------------------- |
| * 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 |
| |
| #else /* MULTI_CONSOLE_API */ |
| |
| /* ----------------------------------------------------- |
| * In the old API these are all no-op stubs that need to |
| * be overridden by the platform to be useful. |
| * ----------------------------------------------------- |
| */ |
| func plat_crash_console_init |
| mov x0, #0 |
| ret |
| endfunc plat_crash_console_init |
| |
| func plat_crash_console_putc |
| ret |
| endfunc plat_crash_console_putc |
| |
| func plat_crash_console_flush |
| ret |
| endfunc plat_crash_console_flush |
| #endif |
| |
| /* ----------------------------------------------------- |
| * Placeholder function which should be redefined by |
| * each platform. This function should preserve x19 - x29. |
| * ----------------------------------------------------- |
| */ |
| func plat_reset_handler |
| ret |
| endfunc plat_reset_handler |
| |
| /* ----------------------------------------------------- |
| * Placeholder function which should be redefined by |
| * each platform. This function is allowed to use |
| * registers x0 - x17. |
| * ----------------------------------------------------- |
| */ |
| func plat_disable_acp |
| ret |
| endfunc plat_disable_acp |
| |
| /* ----------------------------------------------------- |
| * void bl1_plat_prepare_exit(entry_point_info_t *ep_info); |
| * Called before exiting BL1. Default: do nothing |
| * ----------------------------------------------------- |
| */ |
| func bl1_plat_prepare_exit |
| ret |
| endfunc bl1_plat_prepare_exit |
| |
| /* ----------------------------------------------------- |
| * void plat_panic_handler(void) __dead2; |
| * Endless loop by default. |
| * ----------------------------------------------------- |
| */ |
| func plat_panic_handler |
| wfi |
| b plat_panic_handler |
| endfunc plat_panic_handler |
| |
| /* ----------------------------------------------------- |
| * void bl31_plat_enable_mmu(uint32_t flags); |
| * |
| * Enable MMU in BL31. |
| * ----------------------------------------------------- |
| */ |
| func bl31_plat_enable_mmu |
| b enable_mmu_direct_el3 |
| endfunc bl31_plat_enable_mmu |
| |
| /* ----------------------------------------------------- |
| * void bl32_plat_enable_mmu(uint32_t flags); |
| * |
| * Enable MMU in BL32. |
| * ----------------------------------------------------- |
| */ |
| func bl32_plat_enable_mmu |
| b enable_mmu_direct_el1 |
| endfunc bl32_plat_enable_mmu |
| |
| |
| /* ----------------------------------------------------- |
| * Platform handler for Uncontainable External Abort. |
| * |
| * x0: EA reason |
| * x1: EA syndrome |
| * ----------------------------------------------------- |
| */ |
| func plat_handle_uncontainable_ea |
| b report_unhandled_exception |
| endfunc plat_handle_uncontainable_ea |
| |
| /* ----------------------------------------------------- |
| * Platform handler for Double Fault. |
| * |
| * x0: EA reason |
| * x1: EA syndrome |
| * ----------------------------------------------------- |
| */ |
| func plat_handle_double_fault |
| b report_unhandled_exception |
| endfunc plat_handle_double_fault |
| |
| /* ----------------------------------------------------- |
| * Platform handler for EL3 External Abort. |
| * ----------------------------------------------------- |
| */ |
| func plat_handle_el3_ea |
| b report_unhandled_exception |
| endfunc plat_handle_el3_ea |