nuttx/arch/arm/src/phy62xx/start.c

/****************************************************************************
 * arch/arm/src/phy62xx/start.c
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you 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.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdint.h>
#include <assert.h>
#include <debug.h>

#include <nuttx/init.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>

#include "arm_internal.h"
#include "start.h"
#include "clock.h"
#include "log.h"
#include "flash.h"
#include "jump_function.h"
#include "rom_sym_def.h"
/* #include "rf_phy_driver.h" */

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

extern const uint8_t _sramscttexts[];
extern uint8_t _sramscttext[];
extern uint8_t _eramscttext[];

extern const uint8_t _sjtblss[];
extern uint8_t _sjtbls[];
extern uint8_t _ejtbls[];

#define IDLE_STACK ((uintptr_t)_ebss + CONFIG_IDLETHREAD_STACKSIZE)
const uintptr_t g_idle_topstack = IDLE_STACK;

/****************************************************************************
 * Public Data
 ****************************************************************************/

/****************************************************************************
 * Private Functions
 ****************************************************************************/

/****************************************************************************
 * Name: showprogress
 *
 * Description:
 *   Print a character on the CONSOLE USART to show boot status.
 *
 ****************************************************************************/

#ifdef CONFIG_DEBUG_FEATURES
#  define showprogress(c) up_putc(c)
#else
#  define showprogress(c)
#endif

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: c_start
 *
 * Description:
 *   This is the reset entry point.
 *
 ****************************************************************************/

extern uint32_t *jump_table_base[];

extern volatile sysclk_t g_system_clk;
extern void *osal_memset(void *s, int c, size_t n);
extern void *osal_memcpy(void *dest, const void *src, size_t n);

void c_start(void)
{
  /* Configure the uart so that we can get debug output as soon as possible */

  /* set stack to main stack point */

  spif_config(SYS_CLK_DLL_64M, 1, 0x801003b, 0, 0);

  HAL_CRITICAL_SECTION_INIT();

  /* g_system_clk = SYS_CLK_DLL_48M; */

  g_system_clk = SYS_CLK_DBL_32M;
  clk_init(SYS_CLK_DBL_32M);

  /* clk_init(SYS_CLK_XTAL_16M); */
#if 1
  /* stm32_clockconfig(); */

  /* Clear .bss.  We'll do this inline (vs. calling memset) just to be
   * certain that there are no issues with the state of global variables.
   */

  osal_memset(_sbss, 0, _ebss - _ebss);

  /* for (dest = _sbss; dest < _ebss; )
   *  {
   *    *dest++ = 0;
   *  }
   */

  /* showprogress('B'); */

  /* Move the initialized data section from his temporary holding spot in
   * FLASH into the correct place in SRAM.  The correct place in SRAM is
   * give by _sdata and _edata.  The temporary location is in FLASH at the
   * end of all of the other read-only data (.text, .rodata) at _eronly.
   */

  osal_memcpy(_sdata, _eronly, _edata - _sdata);

  /* for (src = _eronly, dest = _sdata; dest < _edata; )
   *  {
   *    *dest++ = *src++;
   *  }
   */

  /* showprogress('C'); */

  /* for (src = _sramscttexts, dest = _sramscttext; dest < _eramscttext; )
   * {
   *   *dest++ = *src++;
   *  }
   */

  osal_memcpy(_sjtbls, _sjtblss, _ejtbls - _sjtbls);

  /* for (src = _sjtblss, dest = _sjtbls; dest < _ejtbls; )
   * {
   *  *dest++ = *src++;
   * }
   */

  /* showprogress('J'); */

  /* Perform early serial initialization */

  /* hal_cache_init(); */

    {
      xflash_Ctx_t cfg =
        {
          .spif_ref_clk   =   SYS_CLK_DLL_64M,
          .rd_instr       =   XFRD_FCMD_READ_DUAL
        };

      hal_spif_cache_init(cfg);
    }

  /* hal_gpio_init(); */

  LOG_INIT();
  showprogress('A');
#ifdef USE_EARLYSERIALINIT
  arm_earlyserialinit();
#endif
  showprogress('D');

  /* For the case of the separate user-/kernel-space build, perform whatever
   * platform specific initialization of the user memory is required.
   * Normally this just means initializing the user space .data and .bss
   * segments.
   */

#ifdef CONFIG_BUILD_PROTECTED

  /* stm32_userspace(); */

  showprogress('E');
#endif

  /* Initialize onboard resources */

  /* stm32_boardinitialize(); */

  showprogress('F');

  /* Then start NuttX */

  showprogress('\r');
  showprogress('\n');
#endif

#ifdef CONFIG_PHY6222_BLE
  phy62xx_ble_init();
#endif
  jump_table_base[0] = 0;
  nx_start();

  /* Shouldn't get here */

  for (; ; );
}