mirror of
https://github.com/mytechnotalent/Embedded-Hacking.git
synced 2026-07-31 08:07:26 +02:00
Kevin Thomas
066c69f24b
Public function docstrings belong exclusively in .h headers per coding convention. Only static helper functions and static variables retain docstrings in .c files. Removed 413 duplicate docstrings across 185 files (15 CBM + 15 C SDK projects). All 30 projects rebuild with zero errors.
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/**
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******************************************************************************
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* @file rp2350_reset_handler.c
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* @author Kevin Thomas
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* @brief Reset handler implementation for RP2350.
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*
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* Entry point after power-on or system reset. Copies the
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* .data section from flash to RAM, initializes the stack,
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* XOSC, subsystem resets, UART, then branches to main().
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*
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2026 Kevin Thomas.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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#include "rp2350_reset_handler.h"
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#include "rp2350_stack.h"
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#include "rp2350_xosc.h"
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#include "rp2350_reset.h"
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#include "rp2350_uart.h"
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extern int main(void);
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/**
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* @brief Linker-defined symbol: flash LMA of .data section.
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*/
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extern uint32_t __data_lma;
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/**
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* @brief Linker-defined symbol: RAM VMA start of .data section.
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*/
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extern uint32_t __data_start;
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/**
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* @brief Linker-defined symbol: RAM VMA end of .data section.
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*/
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extern uint32_t __data_end;
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/**
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* @brief Copy initialized data and RAM-resident code from flash to RAM.
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* @retval None
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*/
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static void _data_copy_init(void)
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{
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uint32_t *src = &__data_lma;
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uint32_t *dst = &__data_start;
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while (dst < &__data_end)
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*dst++ = *src++;
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}
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void ram_init(void)
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{
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stack_init();
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_data_copy_init();
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}
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void __attribute__((naked, noreturn)) Reset_Handler(void)
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{
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__asm__ volatile (
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"bl ram_init\n\t"
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"bl xosc_init\n\t"
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"bl xosc_enable_peri_clk\n\t"
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"bl reset_init_subsystem\n\t"
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"bl uart_release_reset\n\t"
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"bl uart_init\n\t"
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"b main\n\t"
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);
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}
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