static char * __init x86_intel_ce_memory_setup(void)
{
unsigned long memory_top, linux_top;
/* Our only memory config option is e801,
* firmware doesn't seem to bother with e820 map.
*/
memory_top = ONE_MB + boot_params.alt_mem_k * 1024;
/* Ancient bootloaders pass garbage here, do a basic sanity check */
if (memory_top < 4 * ONE_MB) {
printk(KERN_WARNING
"Incorrect e801 memory size 0x%08lx, using 768 MB\n",
memory_top);
memory_top = 768 * ONE_MB;
}
e820_add_region(0, LOWMEMSIZE(), E820_RAM);
e820_add_region(HIGH_MEMORY, memory_top - HIGH_MEMORY, E820_RAM);
/* CEFDK uses some regions in the first 1MB for various purposes.
* We hardcode superset of those regions to support different
* CEFDK releases.
*/
#ifdef CONFIG_ACPI
e820_update_range(0x10000, 0x8000, E820_RAM, E820_ACPI);
#endif
/* 8051 microcode can be loaded at 0x30000 or 0x40000 */
e820_update_range(0x30000, 0x20000, E820_RAM, E820_RESERVED);
/* e1000 "NVRAM" */
e820_update_range(0x60000, 0x1000, E820_RAM, E820_RESERVED);
linux_top = x86_intel_ce_machine_top_of_ram(memory_top);
if (linux_top < memory_top)
e820_update_range(linux_top, memory_top - linux_top, E820_RAM,
E820_RESERVED);
/* check board name for reboot and halt sequence*/
{
static __initdata char tmp_cmdline[COMMAND_LINE_SIZE];
strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
parse_args("beyond_param", tmp_cmdline, NULL, 0, parse_pwrctl_type);
}
return "BIOS-e801";
}
void __init setup_bios_corruption_check(void)
{
u64 addr = PAGE_SIZE; /* assume first page is reserved anyway */
if (memory_corruption_check == -1) {
memory_corruption_check =
#ifdef CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK
1
#else
0
#endif
;
}
if (corruption_check_size == 0)
memory_corruption_check = 0;
if (!memory_corruption_check)
return;
corruption_check_size = round_up(corruption_check_size, PAGE_SIZE);
while (addr < corruption_check_size && num_scan_areas < MAX_SCAN_AREAS) {
u64 size;
addr = find_e820_area_size(addr, &size, PAGE_SIZE);
if (addr == 0)
break;
if ((addr + size) > corruption_check_size)
size = corruption_check_size - addr;
if (size == 0)
break;
e820_update_range(addr, size, E820_RAM, E820_RESERVED);
scan_areas[num_scan_areas].addr = addr;
scan_areas[num_scan_areas].size = size;
num_scan_areas++;
/* Assume we've already mapped this early memory */
memset(__va(addr), 0, size);
addr += size;
}
printk(KERN_INFO "Scanning %d areas for low memory corruption\n",
num_scan_areas);
update_e820();
}
