1 files changed, 1 insertions, 108 deletions

diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index e22473993dc9..4c0ec7b46e37 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -192,100 +192,6 @@ static noinline __init void detect_machine_type(void)
                 machine_flags |= MACHINE_FLAG_KVM;
 }
 
-#ifdef CONFIG_64BIT
-static noinline __init int memory_fast_detect(void)
-{
-        unsigned long val0 = 0;
-        unsigned long val1 = 0xc;
-        int ret = -ENOSYS;
-
-        if (ipl_flags & IPL_NSS_VALID)
-                return -ENOSYS;
-
-        asm volatile(
-                "       diag    %1,%2,0x260\n"
-                "0:     lhi     %0,0\n"
-                "1:\n"
-                EX_TABLE(0b,1b)
-                : "+d" (ret), "+d" (val0), "+d" (val1) : : "cc");
-
-        if (ret || val0 != val1)
-                return -ENOSYS;
-
-        memory_chunk[0].size = val0 + 1;
-        return 0;
-}
-#else
-static inline int memory_fast_detect(void)
-{
-        return -ENOSYS;
-}
-#endif
-
-static inline __init unsigned long __tprot(unsigned long addr)
-{
-        int cc = -1;
-
-        asm volatile(
-                "       tprot   0(%1),0\n"
-                "0:     ipm     %0\n"
-                "       srl     %0,28\n"
-                "1:\n"
-                EX_TABLE(0b,1b)
-                : "+d" (cc) : "a" (addr) : "cc");
-        return (unsigned long)cc;
-}
-
-/* Checking memory in 128KB increments. */
-#define CHUNK_INCR      (1UL << 17)
-#define ADDR2G          (1UL << 31)
-
-static noinline __init void find_memory_chunks(unsigned long memsize)
-{
-        unsigned long addr = 0, old_addr = 0;
-        unsigned long old_cc = CHUNK_READ_WRITE;
-        unsigned long cc;
-        int chunk = 0;
-
-        while (chunk < MEMORY_CHUNKS) {
-                cc = __tprot(addr);
-                while (cc == old_cc) {
-                        addr += CHUNK_INCR;
-                        if (memsize && addr >= memsize)
-                                break;
-#ifndef CONFIG_64BIT
-                        if (addr == ADDR2G)
-                                break;
-#endif
-                        cc = __tprot(addr);
-                }
-
-                if (old_addr != addr &&
-                    (old_cc == CHUNK_READ_WRITE || old_cc == CHUNK_READ_ONLY)) {
-                        memory_chunk[chunk].addr = old_addr;
-                        memory_chunk[chunk].size = addr - old_addr;
-                        memory_chunk[chunk].type = old_cc;
-                        chunk++;
-                }
-
-                old_addr = addr;
-                old_cc = cc;
-
-#ifndef CONFIG_64BIT
-                if (addr == ADDR2G)
-                        break;
-#endif
-                /*
-                 * Finish memory detection at the first hole
-                 * if storage size is unknown.
-                 */
-                if (cc == -1UL && !memsize)
-                        break;
-                if (memsize && addr >= memsize)
-                        break;
-        }
-}
-
 static __init void early_pgm_check_handler(void)
 {
         unsigned long addr;
@@ -465,8 +371,6 @@ static void __init setup_boot_command_line(void)
  */
 void __init startup_init(void)
 {
-        unsigned long long memsize;
-
         ipl_save_parameters();
         rescue_initrd();
         clear_bss_section();
@@ -486,18 +390,7 @@ void __init startup_init(void)
         detect_diag44();
         detect_machine_facilities();
         setup_hpage();
-        sclp_read_info_early();
         sclp_facilities_detect();
-        memsize = sclp_memory_detect();
-#ifndef CONFIG_64BIT
-        /*
-         * Can't deal with more than 2G in 31 bit addressing mode, so
-         * limit the value in order to avoid strange side effects.
-         */
-        if (memsize > ADDR2G)
-                memsize = ADDR2G;
-#endif
-        if (memory_fast_detect() < 0)
-                find_memory_chunks((unsigned long) memsize);
+        detect_memory_layout(memory_chunk);
         lockdep_on();
 }