X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fs390%2Fkernel%2Fsetup.c;h=5d8ee3baac147e0b153dab2d4ad0152ab22629f9;hb=refs%2Fheads%2Fvserver;hp=1324fc6ce5493dc3f6d5f5cdc79476c75135c077;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 1324fc6ce..5d8ee3baa 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -28,7 +28,6 @@ #include #include #include -#include #include #include #include @@ -36,6 +35,9 @@ #include #include #include +#include +#include +#include #include #include @@ -44,6 +46,15 @@ #include #include #include +#include +#include +#include + +/* + * User copy operations. + */ +struct uaccess_ops uaccess; +EXPORT_SYMBOL_GPL(uaccess); /* * Machine setup.. @@ -51,20 +62,11 @@ 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; -unsigned int default_storage_key = 0; -struct { - unsigned long addr, size, type; -} memory_chunk[MEMORY_CHUNKS] = { { 0 } }; -#define CHUNK_READ_WRITE 0 -#define CHUNK_READ_ONLY 1 -volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */ -/* - * Setup options - */ -extern int _text,_etext, _edata, _end; +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; /* * This is set up by the setup-routine at boot-time @@ -74,10 +76,15 @@ extern int _text,_etext, _edata, _end; #include -static char command_line[COMMAND_LINE_SIZE] = { 0, }; +static struct resource code_resource = { + .name = "Kernel code", + .flags = IORESOURCE_BUSY | IORESOURCE_MEM, +}; -static struct resource code_resource = { "Kernel code", 0x100000, 0 }; -static struct resource data_resource = { "Kernel data", 0, 0 }; +static struct resource data_resource = { + .name = "Kernel data", + .flags = IORESOURCE_BUSY | IORESOURCE_MEM, +}; /* * cpu_init() initializes state that is per-CPU. @@ -89,18 +96,17 @@ void __devinit cpu_init (void) /* * Store processor id in lowcore (used e.g. in timer_interrupt) */ - asm volatile ("stidp %0": "=m" (S390_lowcore.cpu_data.cpu_id)); + asm volatile("stidp %0": "=m" (S390_lowcore.cpu_data.cpu_id)); S390_lowcore.cpu_data.cpu_addr = addr; /* * Force FPU initialization: */ clear_thread_flag(TIF_USEDFPU); - current->used_math = 0; + clear_used_math(); - /* Setup active_mm for idle_task */ - atomic_inc(&init_mm.mm_count); - current->active_mm = &init_mm; + atomic_inc(&init_mm.mm_count); + current->active_mm = &init_mm; if (current->mm) BUG(); enter_lazy_tlb(&init_mm, current); @@ -111,6 +117,7 @@ void __devinit cpu_init (void) */ char vmhalt_cmd[128] = ""; char vmpoff_cmd[128] = ""; +char vmpanic_cmd[128] = ""; static inline void strncpy_skip_quote(char *dst, char *src, int n) { @@ -142,6 +149,38 @@ static int __init vmpoff_setup(char *str) __setup("vmpoff=", vmpoff_setup); +static int vmpanic_notify(struct notifier_block *self, unsigned long event, + void *data) +{ + if (MACHINE_IS_VM && strlen(vmpanic_cmd) > 0) + cpcmd(vmpanic_cmd, NULL, 0, NULL); + + return NOTIFY_OK; +} + +#define PANIC_PRI_VMPANIC 0 + +static struct notifier_block vmpanic_nb = { + .notifier_call = vmpanic_notify, + .priority = PANIC_PRI_VMPANIC +}; + +static int __init vmpanic_setup(char *str) +{ + static int register_done __initdata = 0; + + strncpy_skip_quote(vmpanic_cmd, str, 127); + vmpanic_cmd[127] = 0; + if (!register_done) { + register_done = 1; + atomic_notifier_chain_register(&panic_notifier_list, + &vmpanic_nb); + } + return 1; +} + +__setup("vmpanic=", vmpanic_setup); + /* * condev= and conmode= setup parameter. */ @@ -185,11 +224,11 @@ static void __init conmode_default(void) char *ptr; if (MACHINE_IS_VM) { - cpcmd("QUERY CONSOLE", query_buffer, 1024); + 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); + cpcmd("QUERY TERM", query_buffer, 1024, NULL); ptr = strstr(query_buffer, "CONMODE"); /* * Set the conmode to 3215 so that the device recognition @@ -198,7 +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); + cpcmd("TERM CONMODE 3215", NULL, 0, NULL); if (ptr == NULL) { #if defined(CONFIG_SCLP_CONSOLE) SET_CONSOLE_SCLP; @@ -247,26 +286,22 @@ void (*_machine_power_off)(void) = machine_power_off_smp; /* * Reboot, halt and power_off routines for non SMP. */ -extern void reipl(unsigned long devno); static void do_machine_restart_nonsmp(char * __unused) { - if (MACHINE_IS_VM) - cpcmd ("IPL", NULL, 0); - else - reipl (0x10000 | S390_lowcore.ipl_device); + do_reipl(); } static void do_machine_halt_nonsmp(void) { if (MACHINE_IS_VM && strlen(vmhalt_cmd) > 0) - cpcmd(vmhalt_cmd, NULL, 0); + __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); + __cpcmd(vmpoff_cmd, NULL, 0, NULL); signal_processor(smp_processor_id(), sigp_stop_and_store_status); } @@ -282,257 +317,353 @@ void (*_machine_power_off)(void) = do_machine_power_off_nonsmp; void machine_restart(char *command) { - console_unblank(); + if (!in_interrupt() || oops_in_progress) + /* + * Only unblank the console if we are called in enabled + * context or a bust_spinlocks cleared the way for us. + */ + console_unblank(); _machine_restart(command); } -EXPORT_SYMBOL(machine_restart); - void machine_halt(void) { - console_unblank(); + if (!in_interrupt() || oops_in_progress) + /* + * Only unblank the console if we are called in enabled + * context or a bust_spinlocks cleared the way for us. + */ + console_unblank(); _machine_halt(); } -EXPORT_SYMBOL(machine_halt); - void machine_power_off(void) { - console_unblank(); + if (!in_interrupt() || oops_in_progress) + /* + * Only unblank the console if we are called in enabled + * context or a bust_spinlocks cleared the way for us. + */ + console_unblank(); _machine_power_off(); } -EXPORT_SYMBOL(machine_power_off); +/* + * Dummy power off function. + */ +void (*pm_power_off)(void) = machine_power_off; + +static int __init early_parse_mem(char *p) +{ + memory_end = memparse(p, &p); + return 0; +} +early_param("mem", early_parse_mem); /* - * Setup function called from init/main.c just after the banner - * was printed. + * "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes */ -extern char _pstart, _pend, _stext; +static int __init early_parse_ipldelay(char *p) +{ + unsigned long delay = 0; + + delay = simple_strtoul(p, &p, 0); + + switch (*p) { + case 's': + case 'S': + delay *= 1000000; + break; + case 'm': + case 'M': + delay *= 60 * 1000000; + } + + /* now wait for the requested amount of time */ + udelay(delay); -void __init setup_arch(char **cmdline_p) + return 0; +} +early_param("ipldelay", early_parse_ipldelay); + +static void __init +setup_lowcore(void) { - unsigned long bootmap_size; - unsigned long memory_start, memory_end; - char c = ' ', cn, *to = command_line, *from = COMMAND_LINE; - struct resource *res; - unsigned long start_pfn, end_pfn; - static unsigned int smptrap=0; - unsigned long delay = 0; struct _lowcore *lc; - int i; + int lc_pages; - if (smptrap) - return; - smptrap=1; - - /* - * print what head.S has found out about the machine - */ -#ifndef CONFIG_ARCH_S390X - printk((MACHINE_IS_VM) ? - "We are running under VM (31 bit mode)\n" : - "We are running native (31 bit mode)\n"); - printk((MACHINE_HAS_IEEE) ? - "This machine has an IEEE fpu\n" : - "This machine has no IEEE fpu\n"); -#else /* CONFIG_ARCH_S390X */ - printk((MACHINE_IS_VM) ? - "We are running under VM (64 bit mode)\n" : - "We are running native (64 bit mode)\n"); -#endif /* CONFIG_ARCH_S390X */ + /* + * Setup lowcore for boot cpu + */ + lc_pages = sizeof(void *) == 8 ? 2 : 1; + lc = (struct _lowcore *) + __alloc_bootmem(lc_pages * PAGE_SIZE, lc_pages * PAGE_SIZE, 0); + memset(lc, 0, lc_pages * PAGE_SIZE); + lc->restart_psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY; + lc->restart_psw.addr = + PSW_ADDR_AMODE | (unsigned long) restart_int_handler; + lc->external_new_psw.mask = PSW_KERNEL_BITS; + lc->external_new_psw.addr = + PSW_ADDR_AMODE | (unsigned long) ext_int_handler; + lc->svc_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_IO | PSW_MASK_EXT; + lc->svc_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) system_call; + lc->program_new_psw.mask = PSW_KERNEL_BITS; + lc->program_new_psw.addr = + PSW_ADDR_AMODE | (unsigned long)pgm_check_handler; + lc->mcck_new_psw.mask = + PSW_KERNEL_BITS & ~PSW_MASK_MCHECK & ~PSW_MASK_DAT; + lc->mcck_new_psw.addr = + PSW_ADDR_AMODE | (unsigned long) mcck_int_handler; + lc->io_new_psw.mask = PSW_KERNEL_BITS; + lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler; + lc->ipl_device = S390_lowcore.ipl_device; + lc->jiffy_timer = -1LL; + lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE; + lc->async_stack = (unsigned long) + __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0) + ASYNC_SIZE; + lc->panic_stack = (unsigned long) + __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0) + PAGE_SIZE; + lc->current_task = (unsigned long) init_thread_union.thread_info.task; + lc->thread_info = (unsigned long) &init_thread_union; +#ifndef CONFIG_64BIT + if (MACHINE_HAS_IEEE) { + lc->extended_save_area_addr = (__u32) + __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0); + /* enable extended save area */ + __ctl_set_bit(14, 29); + } +#endif + set_prefix((u32)(unsigned long) lc); +} - ROOT_DEV = Root_RAM0; - memory_start = (unsigned long) &_end; /* fixit if use $CODELO etc*/ -#ifndef CONFIG_ARCH_S390X - memory_end = memory_size & ~0x400000UL; /* align memory end to 4MB */ - /* - * 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_ARCH_S390X */ - memory_end = memory_size & ~0x200000UL; /* detected in head.s */ -#endif /* CONFIG_ARCH_S390X */ - init_mm.start_code = PAGE_OFFSET; - init_mm.end_code = (unsigned long) &_etext; - init_mm.end_data = (unsigned long) &_edata; - init_mm.brk = (unsigned long) &_end; +static void __init +setup_resources(void) +{ + struct resource *res; + int i; code_resource.start = (unsigned long) &_text; code_resource.end = (unsigned long) &_etext - 1; data_resource.start = (unsigned long) &_etext; data_resource.end = (unsigned long) &_edata - 1; - /* Save unparsed command line copy for /proc/cmdline */ - memcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE); - saved_command_line[COMMAND_LINE_SIZE-1] = '\0'; - - for (;;) { - /* - * "mem=XXX[kKmM]" sets memsize - */ - if (c == ' ' && strncmp(from, "mem=", 4) == 0) { - memory_end = simple_strtoul(from+4, &from, 0); - if ( *from == 'K' || *from == 'k' ) { - memory_end = memory_end << 10; - from++; - } else if ( *from == 'M' || *from == 'm' ) { - memory_end = memory_end << 20; - from++; - } - } - /* - * "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes - */ - if (c == ' ' && strncmp(from, "ipldelay=", 9) == 0) { - delay = simple_strtoul(from+9, &from, 0); - if (*from == 's' || *from == 'S') { - delay = delay*1000000; - from++; - } else if (*from == 'm' || *from == 'M') { - delay = delay*60*1000000; - from++; - } - /* now wait for the requested amount of time */ - udelay(delay); - } - cn = *(from++); - if (!cn) - break; - if (cn == '\n') - cn = ' '; /* replace newlines with space */ - if (cn == 0x0d) - cn = ' '; /* replace 0x0d with space */ - if (cn == ' ' && c == ' ') - continue; /* remove additional spaces */ - c = cn; - if (to - command_line >= COMMAND_LINE_SIZE) - break; - *(to++) = c; - } - if (c == ' ' && to > command_line) to--; - *to = '\0'; - *cmdline_p = command_line; + for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) { + res = alloc_bootmem_low(sizeof(struct resource)); + res->flags = IORESOURCE_BUSY | IORESOURCE_MEM; + switch (memory_chunk[i].type) { + case CHUNK_READ_WRITE: + res->name = "System RAM"; + break; + case CHUNK_READ_ONLY: + res->name = "System ROM"; + res->flags |= IORESOURCE_READONLY; + break; + default: + res->name = "reserved"; + } + res->start = memory_chunk[i].addr; + res->end = memory_chunk[i].addr + memory_chunk[i].size - 1; + request_resource(&iomem_resource, res); + request_resource(res, &code_resource); + request_resource(res, &data_resource); + } +} + +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_INIT - 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) +{ + unsigned long bootmap_size; + unsigned long start_pfn, end_pfn, init_pfn; + int i; /* * partially used pages are not usable - thus * we are rounding upwards: */ - start_pfn = (__pa(&_end) + PAGE_SIZE - 1) >> PAGE_SHIFT; - end_pfn = max_pfn = memory_end >> PAGE_SHIFT; + start_pfn = PFN_UP(__pa(&_end)); + end_pfn = max_pfn = PFN_DOWN(memory_end); + + /* Initialize storage key for kernel pages */ + for (init_pfn = 0 ; init_pfn < start_pfn; init_pfn++) + page_set_storage_key(init_pfn << PAGE_SHIFT, PAGE_DEFAULT_KEY); + +#ifdef CONFIG_BLK_DEV_INITRD + /* + * Move the initrd in case the bitmap of the bootmem allocater + * would overwrite it. + */ + + if (INITRD_START && INITRD_SIZE) { + unsigned long bmap_size; + unsigned long start; + + bmap_size = bootmem_bootmap_pages(end_pfn - start_pfn + 1); + bmap_size = PFN_PHYS(bmap_size); + + if (PFN_PHYS(start_pfn) + bmap_size > INITRD_START) { + start = PFN_PHYS(start_pfn) + bmap_size + PAGE_SIZE; + + if (start + INITRD_SIZE > memory_end) { + printk("initrd extends beyond end of memory " + "(0x%08lx > 0x%08lx)\n" + "disabling initrd\n", + start + INITRD_SIZE, memory_end); + INITRD_START = INITRD_SIZE = 0; + } else { + printk("Moving initrd (0x%08lx -> 0x%08lx, " + "size: %ld)\n", + INITRD_START, start, INITRD_SIZE); + memmove((void *) start, (void *) INITRD_START, + INITRD_SIZE); + INITRD_START = start; + } + } + } +#endif /* - * Initialize the boot-time allocator (with low memory only): + * Initialize the boot-time allocator */ bootmap_size = init_bootmem(start_pfn, end_pfn); /* * Register RAM areas with the bootmem allocator. */ - for (i = 0; i < 16 && memory_chunk[i].size > 0; i++) { - unsigned long start_chunk, end_chunk; + + for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) { + unsigned long start_chunk, end_chunk, pfn; if (memory_chunk[i].type != CHUNK_READ_WRITE) continue; - start_chunk = (memory_chunk[i].addr + PAGE_SIZE - 1); - start_chunk >>= PAGE_SHIFT; - end_chunk = (memory_chunk[i].addr + memory_chunk[i].size); - end_chunk >>= PAGE_SHIFT; - if (start_chunk < start_pfn) - start_chunk = start_pfn; - if (end_chunk > end_pfn) - end_chunk = end_pfn; - if (start_chunk < end_chunk) - free_bootmem(start_chunk << PAGE_SHIFT, - (end_chunk - start_chunk) << PAGE_SHIFT); + start_chunk = PFN_DOWN(memory_chunk[i].addr); + end_chunk = start_chunk + PFN_DOWN(memory_chunk[i].size) - 1; + end_chunk = min(end_chunk, end_pfn); + if (start_chunk >= end_chunk) + continue; + add_active_range(0, start_chunk, end_chunk); + pfn = max(start_chunk, start_pfn); + for (; pfn <= end_chunk; pfn++) + page_set_storage_key(PFN_PHYS(pfn), PAGE_DEFAULT_KEY); } - /* - * Reserve the bootmem bitmap itself as well. We do this in two - * steps (first step was init_bootmem()) because this catches - * the (very unlikely) case of us accidentally initializing the - * bootmem allocator with an invalid RAM area. - */ - reserve_bootmem(start_pfn << PAGE_SHIFT, bootmap_size); + psw_set_key(PAGE_DEFAULT_KEY); + + free_bootmem_with_active_regions(0, max_pfn); + reserve_bootmem(0, PFN_PHYS(start_pfn)); + + /* + * Reserve the bootmem bitmap itself as well. We do this in two + * steps (first step was init_bootmem()) because this catches + * the (very unlikely) case of us accidentally initializing the + * bootmem allocator with an invalid RAM area. + */ + reserve_bootmem(start_pfn << PAGE_SHIFT, bootmap_size); #ifdef CONFIG_BLK_DEV_INITRD - if (INITRD_START) { + if (INITRD_START && INITRD_SIZE) { if (INITRD_START + INITRD_SIZE <= memory_end) { reserve_bootmem(INITRD_START, INITRD_SIZE); initrd_start = INITRD_START; initrd_end = initrd_start + INITRD_SIZE; } else { - printk("initrd extends beyond end of memory " - "(0x%08lx > 0x%08lx)\ndisabling initrd\n", - initrd_start + INITRD_SIZE, memory_end); - initrd_start = initrd_end = 0; + printk("initrd extends beyond end of memory " + "(0x%08lx > 0x%08lx)\ndisabling initrd\n", + initrd_start + INITRD_SIZE, memory_end); + initrd_start = initrd_end = 0; } - } + } #endif +} + +/* + * Setup function called from init/main.c just after the banner + * was printed. + */ +void __init +setup_arch(char **cmdline_p) +{ /* - * Setup lowcore for boot cpu + * print what head.S has found out about the machine */ -#ifndef CONFIG_ARCH_S390X - lc = (struct _lowcore *) __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0); - memset(lc, 0, PAGE_SIZE); -#else /* CONFIG_ARCH_S390X */ - lc = (struct _lowcore *) __alloc_bootmem(2*PAGE_SIZE, 2*PAGE_SIZE, 0); - memset(lc, 0, 2*PAGE_SIZE); -#endif /* CONFIG_ARCH_S390X */ - lc->restart_psw.mask = PSW_BASE_BITS; - lc->restart_psw.addr = - PSW_ADDR_AMODE | (unsigned long) restart_int_handler; - lc->external_new_psw.mask = PSW_KERNEL_BITS; - lc->external_new_psw.addr = - PSW_ADDR_AMODE | (unsigned long) ext_int_handler; - lc->svc_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_IO | PSW_MASK_EXT; - lc->svc_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) system_call; - lc->program_new_psw.mask = PSW_KERNEL_BITS; - lc->program_new_psw.addr = - PSW_ADDR_AMODE | (unsigned long)pgm_check_handler; - lc->mcck_new_psw.mask = PSW_KERNEL_BITS; - lc->mcck_new_psw.addr = - PSW_ADDR_AMODE | (unsigned long) mcck_int_handler; - lc->io_new_psw.mask = PSW_KERNEL_BITS; - lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler; - lc->ipl_device = S390_lowcore.ipl_device; - lc->jiffy_timer = -1LL; - lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE; - lc->async_stack = (unsigned long) - __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0) + ASYNC_SIZE; -#ifdef CONFIG_CHECK_STACK - lc->panic_stack = (unsigned long) - __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0) + PAGE_SIZE; -#endif - lc->current_task = (unsigned long) init_thread_union.thread_info.task; - lc->thread_info = (unsigned long) &init_thread_union; -#ifdef CONFIG_ARCH_S390X - if (MACHINE_HAS_DIAG44) - lc->diag44_opcode = 0x83000044; +#ifndef CONFIG_64BIT + printk((MACHINE_IS_VM) ? + "We are running under VM (31 bit mode)\n" : + "We are running native (31 bit mode)\n"); + printk((MACHINE_HAS_IEEE) ? + "This machine has an IEEE fpu\n" : + "This machine has no IEEE fpu\n"); +#else /* CONFIG_64BIT */ + printk((MACHINE_IS_VM) ? + "We are running under VM (64 bit mode)\n" : + "We are running native (64 bit mode)\n"); +#endif /* CONFIG_64BIT */ + + /* Save unparsed command line copy for /proc/cmdline */ + strlcpy(saved_command_line, COMMAND_LINE, COMMAND_LINE_SIZE); + + *cmdline_p = COMMAND_LINE; + *(*cmdline_p + COMMAND_LINE_SIZE - 1) = '\0'; + + ROOT_DEV = Root_RAM0; + + init_mm.start_code = PAGE_OFFSET; + init_mm.end_code = (unsigned long) &_etext; + init_mm.end_data = (unsigned long) &_edata; + init_mm.brk = (unsigned long) &_end; + + if (MACHINE_HAS_MVCOS) + memcpy(&uaccess, &uaccess_mvcos, sizeof(uaccess)); else - lc->diag44_opcode = 0x07000700; -#endif /* CONFIG_ARCH_S390X */ - set_prefix((u32)(unsigned long) lc); + memcpy(&uaccess, &uaccess_std, sizeof(uaccess)); + + parse_early_param(); + + setup_memory_end(); + setup_memory(); + setup_resources(); + setup_lowcore(); + cpu_init(); __cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr; + smp_setup_cpu_possible_map(); /* * Create kernel page tables and switch to virtual addressing. */ paging_init(); - res = alloc_bootmem_low(sizeof(struct resource)); - res->start = 0; - res->end = memory_end; - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; - request_resource(&iomem_resource, res); - request_resource(res, &code_resource); - request_resource(res, &data_resource); - /* Setup default console */ conmode_default(); } @@ -563,6 +694,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) struct cpuinfo_S390 *cpuinfo; unsigned long n = (unsigned long) v - 1; + preempt_disable(); if (!n) { seq_printf(m, "vendor_id : IBM/S390\n" "# processors : %i\n" @@ -587,6 +719,7 @@ static int show_cpuinfo(struct seq_file *m, void *v) cpuinfo->cpu_id.ident, cpuinfo->cpu_id.machine); } + preempt_enable(); return 0; }