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Diffstat (limited to '')
-rw-r--r-- | plat/common/aarch64/platform_helpers.S | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/plat/common/aarch64/platform_helpers.S b/plat/common/aarch64/platform_helpers.S new file mode 100644 index 0000000..bc650c9 --- /dev/null +++ b/plat/common/aarch64/platform_helpers.S @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <arch.h> +#include <asm_macros.S> +#include <drivers/console.h> +#include <platform_def.h> + + .weak plat_report_exception + .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 + +#define MPIDR_RES_BIT_MASK 0xff000000 + + /* ----------------------------------------------------- + * Placeholder function which should be redefined by + * each platform. + * ----------------------------------------------------- + */ +func plat_report_exception + ret +endfunc plat_report_exception + + /* ----------------------------------------------------- + * 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 |