RE: Application only starts in debug after SDK12 migration

Hung Bui — Thu, 03 Nov 2016 11:39:01 GMT

@codezork: I assume this is for the linker script for the secure bootloader only, not for the application ? The application should not be affected/modified because of the bootloader.

RE: Application only starts in debug after SDK12 migration

codezork — Wed, 02 Nov 2016 22:20:45 GMT

It had nothing to do with sdk12 but with the bootloader feature. For this feature the gcc linker script must be modified like on the bootloader_secure example:

/* Linker script to configure memory regions. */

SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)

MEMORY
{
  /** Flash start address for the bootloader. This setting will also be stored in UICR to allow the
   *  MBR to init the bootloader when starting the system. This value must correspond to
   *  BOOTLOADER_REGION_START found in dfu_types.h. The system is prevented from starting up if
   *  those values do not match. The check is performed in main.c, see
   *  APP_ERROR_CHECK_BOOL(*((uint32_t *)NRF_UICR_BOOT_START_ADDRESS) == BOOTLOADER_REGION_START);
   */
  FLASH (rx) : ORIGIN = 0x3AC00, LENGTH = 0x5000

  /** RAM Region for bootloader. This setting is suitable when used with s110, s120, s130, s310. */
  RAM (rwx) :  ORIGIN = 0x20002C00, LENGTH = 0x5380

  /** Location of non initialized RAM. Non initialized RAM is used for exchanging bond information
   *  from application to bootloader when using buttonluss DFU OTA.
   */
  NOINIT (rwx) :  ORIGIN = 0x20007F80, LENGTH = 0x80

  /** Location of bootloader setting in at the last flash page. */
  BOOTLOADER_SETTINGS (rw) : ORIGIN = 0x0003FC00, LENGTH = 0x0400

  /** Location in UICR where bootloader start address is stored. */
  UICR_BOOTLOADER (r) : ORIGIN = 0x10001014, LENGTH = 0x04
}

SECTIONS
{
  /* Ensures the bootloader settings are placed at the last flash page. */
  .bootloaderSettings(NOLOAD) :
  {

  } > BOOTLOADER_SETTINGS

  /* Ensures the Bootloader start address in flash is written to UICR when flashing the image. */
  .uicrBootStartAddress :
  {
    KEEP(*(.uicrBootStartAddress))
  } > UICR_BOOTLOADER

  /* No init RAM section in bootloader. Used for bond information exchange. */
  .noinit(NOLOAD) :
  {

  } > NOINIT
  /* other placements follow here... */
}

SECTIONS
{
  . = ALIGN(4);
  .fs_data :
  {
    PROVIDE(__start_fs_data = .);
    KEEP(*(.fs_data))
    PROVIDE(__stop_fs_data = .);
  } > RAM

  . = ALIGN(4);
  .svc_data :
  {
    PROVIDE(__start_svc_data = .);
    KEEP(*(.svc_data))
    PROVIDE(__stop_svc_data = .);
  } > RAM

  . = ALIGN(4);
  .dfu_trans :
  {
    PROVIDE(__start_dfu_trans = .);
    KEEP(*(.dfu_trans))
    PROVIDE(__stop_dfu_trans = .);
  } > RAM

} INSERT AFTER .data

INCLUDE "nrf51_common.ld"

RE: Application only starts in debug after SDK12 migration

Hung Bui — Wed, 02 Nov 2016 09:32:03 GMT

Hi codezork,

Could you give some more information what did you do in migrating from SDK v11 to SDK v12 ? Which guide did you follow ?

Is there any feature that you want to update to SDK 12 ?