#define BOOT_MEM_ROM_DATA 2
#define BOOT_MEM_RESERVED 3
#define BOOT_MEM_INIT_RAM 4
+#define BOOT_MEM_NOMAP 5
/*
* A memory map that's built upon what was determined
int __init early_init_dt_reserve_memory_arch(phys_addr_t base,
phys_addr_t size, bool nomap)
{
- add_memory_region(base, size, BOOT_MEM_RESERVED);
+ add_memory_region(base, size,
+ nomap ? BOOT_MEM_NOMAP : BOOT_MEM_RESERVED);
+
return 0;
}
in_ram = true;
break;
case BOOT_MEM_RESERVED:
+ case BOOT_MEM_NOMAP:
if ((start >= start_ && start < end_) ||
(start < start_ && start + size >= start_))
free = false;
case BOOT_MEM_RESERVED:
printk(KERN_CONT "(reserved)\n");
break;
+ case BOOT_MEM_NOMAP:
+ printk(KERN_CONT "(nomap)\n");
+ break;
default:
printk(KERN_CONT "type %lu\n", boot_mem_map.map[i].type);
break;
switch (boot_mem_map.map[i].type) {
case BOOT_MEM_RAM:
break;
+ case BOOT_MEM_NOMAP: /* Discard the range from the system. */
+ memblock_remove(PFN_PHYS(start), PFN_PHYS(end - start));
+ continue;
default: /* Reserve the rest of the memory types at boot time */
memblock_reserve(PFN_PHYS(start), PFN_PHYS(end - start));
break;
res->flags |= IORESOURCE_SYSRAM;
break;
case BOOT_MEM_RESERVED:
+ case BOOT_MEM_NOMAP:
default:
res->name = "reserved";
}