diff options
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 68 |
1 files changed, 40 insertions, 28 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 49f2b68e32b..49ef206ec88 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -62,13 +62,9 @@ EXPORT_SYMBOL_GPL(uaccess); unsigned int console_mode = 0; unsigned int console_devno = -1; unsigned int console_irq = -1; -unsigned long memory_size = 0; unsigned long machine_flags = 0; -struct { - unsigned long addr, size, type; -} memory_chunk[MEMORY_CHUNKS] = { { 0 } }; -#define CHUNK_READ_WRITE 0 -#define CHUNK_READ_ONLY 1 + +struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS]; volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */ static unsigned long __initdata memory_end; @@ -228,11 +224,11 @@ static void __init conmode_default(void) char *ptr; if (MACHINE_IS_VM) { - __cpcmd("QUERY CONSOLE", query_buffer, 1024, NULL); + cpcmd("QUERY CONSOLE", query_buffer, 1024, NULL); console_devno = simple_strtoul(query_buffer + 5, NULL, 16); ptr = strstr(query_buffer, "SUBCHANNEL ="); console_irq = simple_strtoul(ptr + 13, NULL, 16); - __cpcmd("QUERY TERM", query_buffer, 1024, NULL); + cpcmd("QUERY TERM", query_buffer, 1024, NULL); ptr = strstr(query_buffer, "CONMODE"); /* * Set the conmode to 3215 so that the device recognition @@ -241,7 +237,7 @@ static void __init conmode_default(void) * 3215 and the 3270 driver will try to access the console * device (3215 as console and 3270 as normal tty). */ - __cpcmd("TERM CONMODE 3215", NULL, 0, NULL); + cpcmd("TERM CONMODE 3215", NULL, 0, NULL); if (ptr == NULL) { #if defined(CONFIG_SCLP_CONSOLE) SET_CONSOLE_SCLP; @@ -298,14 +294,14 @@ static void do_machine_restart_nonsmp(char * __unused) static void do_machine_halt_nonsmp(void) { if (MACHINE_IS_VM && strlen(vmhalt_cmd) > 0) - cpcmd(vmhalt_cmd, NULL, 0, NULL); + __cpcmd(vmhalt_cmd, NULL, 0, NULL); signal_processor(smp_processor_id(), sigp_stop_and_store_status); } static void do_machine_power_off_nonsmp(void) { if (MACHINE_IS_VM && strlen(vmpoff_cmd) > 0) - cpcmd(vmpoff_cmd, NULL, 0, NULL); + __cpcmd(vmpoff_cmd, NULL, 0, NULL); signal_processor(smp_processor_id(), sigp_stop_and_store_status); } @@ -434,7 +430,7 @@ setup_lowcore(void) lc->extended_save_area_addr = (__u32) __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0); /* enable extended save area */ - ctl_set_bit(14, 29); + __ctl_set_bit(14, 29); } #endif set_prefix((u32)(unsigned long) lc); @@ -473,6 +469,37 @@ setup_resources(void) } } +static void __init setup_memory_end(void) +{ + unsigned long real_size, memory_size; + unsigned long max_mem, max_phys; + int i; + + memory_size = real_size = 0; + max_phys = VMALLOC_END - VMALLOC_MIN_SIZE; + memory_end &= PAGE_MASK; + + max_mem = memory_end ? min(max_phys, memory_end) : max_phys; + + for (i = 0; i < MEMORY_CHUNKS; i++) { + struct mem_chunk *chunk = &memory_chunk[i]; + + real_size = max(real_size, chunk->addr + chunk->size); + if (chunk->addr >= max_mem) { + memset(chunk, 0, sizeof(*chunk)); + continue; + } + if (chunk->addr + chunk->size > max_mem) + chunk->size = max_mem - chunk->addr; + memory_size = max(memory_size, chunk->addr + chunk->size); + } + if (!memory_end) + memory_end = memory_size; + if (real_size > memory_end) + printk("More memory detected than supported. Unused: %luk\n", + (real_size - memory_end) >> 10); +} + static void __init setup_memory(void) { @@ -616,8 +643,6 @@ setup_arch(char **cmdline_p) init_mm.end_data = (unsigned long) &_edata; init_mm.brk = (unsigned long) &_end; - memory_end = memory_size; - if (MACHINE_HAS_MVCOS) memcpy(&uaccess, &uaccess_mvcos, sizeof(uaccess)); else @@ -625,20 +650,7 @@ setup_arch(char **cmdline_p) parse_early_param(); -#ifndef CONFIG_64BIT - memory_end &= ~0x400000UL; - - /* - * We need some free virtual space to be able to do vmalloc. - * On a machine with 2GB memory we make sure that we have at - * least 128 MB free space for vmalloc. - */ - if (memory_end > 1920*1024*1024) - memory_end = 1920*1024*1024; -#else /* CONFIG_64BIT */ - memory_end &= ~0x200000UL; -#endif /* CONFIG_64BIT */ - + setup_memory_end(); setup_memory(); setup_resources(); setup_lowcore(); |