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/* 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);
}
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