diff options
Diffstat (limited to 'arch/s390/mm/mem_detect.c')
-rw-r--r-- | arch/s390/mm/mem_detect.c | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/arch/s390/mm/mem_detect.c b/arch/s390/mm/mem_detect.c deleted file mode 100644 index 21f6c82c8296..000000000000 --- a/arch/s390/mm/mem_detect.c +++ /dev/null @@ -1,62 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright IBM Corp. 2008, 2009 - * - * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> - */ - -#include <linux/kernel.h> -#include <linux/memblock.h> -#include <linux/init.h> -#include <linux/debugfs.h> -#include <linux/seq_file.h> -#include <asm/ipl.h> -#include <asm/sclp.h> -#include <asm/setup.h> - -#define CHUNK_READ_WRITE 0 -#define CHUNK_READ_ONLY 1 - -static inline void memblock_physmem_add(phys_addr_t start, phys_addr_t size) -{ - memblock_dbg("memblock_physmem_add: [%#016llx-%#016llx]\n", - start, start + size - 1); - memblock_add_range(&memblock.memory, start, size, 0, 0); - memblock_add_range(&memblock.physmem, start, size, 0, 0); -} - -void __init detect_memory_memblock(void) -{ - unsigned long memsize, rnmax, rzm, addr, size; - int type; - - rzm = sclp.rzm; - rnmax = sclp.rnmax; - memsize = rzm * rnmax; - if (!rzm) - rzm = 1UL << 17; - max_physmem_end = memsize; - addr = 0; - /* keep memblock lists close to the kernel */ - memblock_set_bottom_up(true); - do { - size = 0; - /* assume lowcore is writable */ - type = addr ? tprot(addr) : CHUNK_READ_WRITE; - do { - size += rzm; - if (max_physmem_end && addr + size >= max_physmem_end) - break; - } while (type == tprot(addr + size)); - if (type == CHUNK_READ_WRITE || type == CHUNK_READ_ONLY) { - if (max_physmem_end && (addr + size > max_physmem_end)) - size = max_physmem_end - addr; - memblock_physmem_add(addr, size); - } - addr += size; - } while (addr < max_physmem_end); - memblock_set_bottom_up(false); - if (!max_physmem_end) - max_physmem_end = memblock_end_of_DRAM(); - memblock_dump_all(); -} |