Subversion Repositories shark

/* 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 inline 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);
}