CrossStudio's New Project Wizard simplifies the creation of projects for the OKI ML674000 evaluation board by creating a project with the appropriate project settings, memory map files and startup files. See Creating a New Project for more information on creating projects.

To create a new OKI ML674000 Evaluator  project

CrossStudio for ARM supports the OKI ML674000 Evaluator running applications from both RAM and FLASH.

To build and debug an application running from RAM
To build and debug an application running from FLASH

Warning: Downloading to FLASH on the OKI ML674000 evaluation board can erase and overwrite the firmware. See Restoring the OKI ML674000 Evaluator Firmware for details of how CrossStudio can be used to restore the firmware.

The following sections describe the OKI ML674000 Evaluator support in more detail. See ARM Target Support for more information.

Memory Map Files

The default memory map file $(StudioDir)/targets/OKI_ML674000_Evaluator7T/OKI_ML674000_Evaluator_MemoryMap.xml has been provided. This file is used to describe the memory layout of the target and is used for linking and debugging. The placement of program sections within the memory map for both RAM and FLASH configurations is described by the non-target-specific default memory maps $(StudioDir)/targets/flash_placement.xml and $(StudioDir)/targets/sram_placement.xml.

The memory segment layout for both configurations is the same and is described in the following table:

Type Description Start Address End Address
FLASH External FLASH 0xC8000000 0xC81FFFFF
SDRAM External SDRAM 0xC0000000 0xC01FFFFF
SRAM Internal SRAM 0x10000000 0x10001FFF
SRAM External SRAM 0x00000000 0x000FFFFF

Target Startup Code

The default startup code is in $(StudioDir)/targets/OKI_ML674000_Evaluator/OKI_ML674000_Evaluator_Startup.s. It contains the exception vectors and the default exception handlers. The FLASH version of the code (specified by defining __FLASH_BUILD) is also responsible for configuring memory to match the above memory map and copying the exception vectors into RAM.

Restoring the OKI ML674000 Evaluation Board Firmware

The FLASH memory on the OKI ML674000 evaluation board is divided into two 1MByte banks which can be swapped using the BANK switch on SW1. The default bank (ON position) is shipped with a basic loader firmware. If CrossStudio downloads an application using the FLASH configuration with either the BANK switch set to ON or if the application is larger in size than 0x100000 bytes, the firmware will be overwritten. This is reversible as CrossStudio can be used to re-program the firmware image into FLASH.

To restore the OKI ML674000 Evaluation Board Firmware