From 48026bb824fd2d9cfb00ecd040db6ef3a416bae9 Mon Sep 17 00:00:00 2001 From: Clyne Sullivan Date: Fri, 22 Jan 2021 21:43:36 -0500 Subject: upload initial port --- .../os/common/startup/ARMCMx/compilers/GCC/crt1.c | 219 +++++++++++++++++++++ 1 file changed, 219 insertions(+) create mode 100644 ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c (limited to 'ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c') diff --git a/ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c b/ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c new file mode 100644 index 0000000..87179c4 --- /dev/null +++ b/ChibiOS_20.3.2/os/common/startup/ARMCMx/compilers/GCC/crt1.c @@ -0,0 +1,219 @@ +/* + ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +*/ + +/** + * @file ARMCMx/compilers/GCC/crt1.c + * @brief Startup stub functions. + * + * @addtogroup ARMCMx_GCC_STARTUP + * @{ + */ + +#include +#include + +#include "cmparams.h" + +/*===========================================================================*/ +/* Module local definitions. */ +/*===========================================================================*/ + +#if !defined(CRT1_AREAS_NUMBER) || defined(__DOXYGEN__) +#define CRT1_AREAS_NUMBER 8 +#endif + +#if (CRT1_AREAS_NUMBER < 0) || (CRT1_AREAS_NUMBER > 8) +#error "CRT1_AREAS_NUMBER must be within 0 and 8" +#endif + +/*===========================================================================*/ +/* Module exported variables. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Module local types. */ +/*===========================================================================*/ + +/** + * @brief Type of an area to be initialized. + */ +typedef struct { + uint32_t *init_text_area; + uint32_t *init_area; + uint32_t *clear_area; + uint32_t *no_init_area; +} ram_init_area_t; + +/*===========================================================================*/ +/* Module local variables. */ +/*===========================================================================*/ + +#if (CRT1_AREAS_NUMBER > 0) || defined(__DOXYGEN__) +extern uint32_t __ram0_init_text__, __ram0_init__, __ram0_clear__, __ram0_noinit__; +#endif +#if (CRT1_AREAS_NUMBER > 1) || defined(__DOXYGEN__) +extern uint32_t __ram1_init_text__, __ram1_init__, __ram1_clear__, __ram1_noinit__; +#endif +#if (CRT1_AREAS_NUMBER > 2) || defined(__DOXYGEN__) +extern uint32_t __ram2_init_text__, __ram2_init__, __ram2_clear__, __ram2_noinit__; +#endif +#if (CRT1_AREAS_NUMBER > 3) || defined(__DOXYGEN__) +extern uint32_t __ram3_init_text__, __ram3_init__, __ram3_clear__, __ram3_noinit__; +#endif +#if (CRT1_AREAS_NUMBER > 4) || defined(__DOXYGEN__) +extern uint32_t __ram4_init_text__, __ram4_init__, __ram4_clear__, __ram4_noinit__; +#endif +#if (CRT1_AREAS_NUMBER > 5) || defined(__DOXYGEN__) +extern uint32_t __ram5_init_text__, __ram5_init__, __ram5_clear__, __ram5_noinit__; +#endif +#if (CRT1_AREAS_NUMBER > 6) || defined(__DOXYGEN__) +extern uint32_t __ram6_init_text__, __ram6_init__, __ram6_clear__, __ram6_noinit__; +#endif +#if (CRT1_AREAS_NUMBER > 7) || defined(__DOXYGEN__) +extern uint32_t __ram7_init_text__, __ram7_init__, __ram7_clear__, __ram7_noinit__; +#endif + +/** + * @brief Static table of areas to be initialized. + */ +#if (CRT1_AREAS_NUMBER > 0) || defined(__DOXYGEN__) +static const ram_init_area_t ram_areas[CRT1_AREAS_NUMBER] = { + {&__ram0_init_text__, &__ram0_init__, &__ram0_clear__, &__ram0_noinit__}, +#if (CRT1_AREAS_NUMBER > 1) || defined(__DOXYGEN__) + {&__ram1_init_text__, &__ram1_init__, &__ram1_clear__, &__ram1_noinit__}, +#endif +#if (CRT1_AREAS_NUMBER > 2) || defined(__DOXYGEN__) + {&__ram2_init_text__, &__ram2_init__, &__ram2_clear__, &__ram2_noinit__}, +#endif +#if (CRT1_AREAS_NUMBER > 3) || defined(__DOXYGEN__) + {&__ram3_init_text__, &__ram3_init__, &__ram3_clear__, &__ram3_noinit__}, +#endif +#if (CRT1_AREAS_NUMBER > 4) || defined(__DOXYGEN__) + {&__ram4_init_text__, &__ram4_init__, &__ram4_clear__, &__ram4_noinit__}, +#endif +#if (CRT1_AREAS_NUMBER > 5) || defined(__DOXYGEN__) + {&__ram5_init_text__, &__ram5_init__, &__ram5_clear__, &__ram5_noinit__}, +#endif +#if (CRT1_AREAS_NUMBER > 6) || defined(__DOXYGEN__) + {&__ram6_init_text__, &__ram6_init__, &__ram6_clear__, &__ram6_noinit__}, +#endif +#if (CRT1_AREAS_NUMBER > 7) || defined(__DOXYGEN__) + {&__ram7_init_text__, &__ram7_init__, &__ram7_clear__, &__ram7_noinit__}, +#endif +}; +#endif + +/*===========================================================================*/ +/* Module local functions. */ +/*===========================================================================*/ + +/*===========================================================================*/ +/* Module exported functions. */ +/*===========================================================================*/ + +/** + * @brief Architecture-dependent core initialization. + * @details This hook is invoked immediately after the stack initialization + * and before the DATA and BSS segments initialization. + * @note This function is a weak symbol. + */ +#if !defined(__DOXYGEN__) +__attribute__((weak)) +#endif +/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/ +void __core_init(void) { + +#if CORTEX_MODEL == 7 + SCB_EnableICache(); + SCB_EnableDCache(); +#endif +} + +/** + * @brief Early initialization. + * @details This hook is invoked immediately after the stack and core + * initialization and before the DATA and BSS segments + * initialization. + * @note This function is a weak symbol. + */ +#if !defined(__DOXYGEN__) +__attribute__((weak)) +#endif +/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/ +void __early_init(void) {} +/*lint -restore*/ + +/** + * @brief Late initialization. + * @details This hook is invoked after the DATA and BSS segments + * initialization and before any static constructor. The + * default behavior is to do nothing. + * @note This function is a weak symbol. + */ +#if !defined(__DOXYGEN__) +__attribute__((weak)) +#endif +/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/ +void __late_init(void) {} +/*lint -restore*/ + +/** + * @brief Default @p main() function exit handler. + * @details This handler is invoked or the @p main() function exit. The + * default behavior is to enter an infinite loop. + * @note This function is a weak symbol. + */ +#if !defined(__DOXYGEN__) +__attribute__((noreturn, weak)) +#endif +/*lint -save -e9075 [8.4] All symbols are invoked from asm context.*/ +void __default_exit(void) { +/*lint -restore*/ + + while (true) { + } +} + +/** + * @brief Performs the initialization of the various RAM areas. + */ +void __init_ram_areas(void) { +#if CRT1_AREAS_NUMBER > 0 + const ram_init_area_t *rap = ram_areas; + + do { + uint32_t *tp = rap->init_text_area; + uint32_t *p = rap->init_area; + + /* Copying initialization data.*/ + while (p < rap->clear_area) { + *p = *tp; + p++; + tp++; + } + + /* Zeroing clear area.*/ + while (p < rap->no_init_area) { + *p = 0; + p++; + } + rap++; + } + while (rap < &ram_areas[CRT1_AREAS_NUMBER]); +#endif +} + +/** @} */ -- cgit v1.2.3