[ECOS] Re: how to make the command exec on the RedBoot to work?

["peng"<crocodilian at 21cn dot com>]

hi Gary Thomas,
  I am sorry that I need your help again,
  on the RedBoot User's Guide, the description of the command exec is started with:
  The exec command is used to execute a non-eCos application, typically a Linux kernel. Additional information may be passed to the kernel at startup time.
  at the same time, on the file: \packages\hal\arm\arch\current\src\redboot_linux_exec.c
  there are some contents related to the exec as the following that;
  // FIXME: This should be a CDL variable, and CYGSEM_REDBOOT_ARM_LINUX_BOOT
//active_if  CYGHWR_HAL_ARM_REDBOOT_MACHINE_TYPE>0
#ifdef HAL_PLATFORM_MACHINE_TYPE
#define CYGHWR_REDBOOT_ARM_MACHINE_TYPE HAL_PLATFORM_MACHINE_TYPE

// Exported CLI function(s)
static void do_exec(int argc, char *argv[]);
RedBoot_cmd("exec", 
            "Execute an image - with MMU off", 
            "[-w timeout] [-b <load addr> [-l <length>]]\n"
            "        [-r <ramdisk addr> [-s <ramdisk length>]]\n"
            "        [-c \"kernel command line\"] [<entry_point>]",
            do_exec
    );
  but I can not completely uderstands the first two notes started with '//' ^_^
  can you tell me what to do ? thanks a lot
  peng   
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