text: /* Hook for machine specific memory setup.
   *
   * This is included late in kernel/setup.c so that it can make use of all of
   * the static functions. */
  
  #define MB (1024 * 1024)
  
  unsigned long sgivwfb_mem_phys;
  unsigned long sgivwfb_mem_size;
  
  long long mem_size __initdata = 0;
  
  static char * __init machine_specific_memory_setup(void)
  {
  	long long gfx_mem_size = 8 * MB;
  
  	mem_size = ALT_MEM_K;
  
  	if (!mem_size) {
  		printk(KERN_WARNING "Bootloader didn't set memory size, upgrade it !\n");
  		mem_size = 128 * MB;
  	}
  
  	/*
  	 * this hardcodes the graphics memory to 8 MB
  	 * it really should be sized dynamically (or at least
  	 * set as a boot param)
  	 */
  	if (!sgivwfb_mem_size) {
  		printk(KERN_WARNING "Defaulting to 8 MB framebuffer size\n");
  		sgivwfb_mem_size = 8 * MB;
  	}
  
  	/*
  	 * Trim to nearest MB
  	 */
  	sgivwfb_mem_size &= ~((1 << 20) - 1);
  	sgivwfb_mem_phys = mem_size - gfx_mem_size;
  
  	add_memory_region(0, LOWMEMSIZE(), E820_RAM);
  	add_memory_region(HIGH_MEMORY, mem_size - sgivwfb_mem_size - HIGH_MEMORY, E820_RAM);
  	add_memory_region(sgivwfb_mem_phys, sgivwfb_mem_size, E820_RESERVED);
  
  	return "PROM";
  
  	/* Remove gcc warnings */
  	(void) sanitize_e820_map(NULL, NULL);
  	(void) copy_e820_map(NULL, 0);
  }
  