#include <linux/console.h>
#include <linux/seq_file.h>
#include <linux/kernel_stat.h>
+#include <linux/device.h>
#include <asm/uaccess.h>
#include <asm/system.h>
* Reboot, halt and power_off routines for non SMP.
*/
extern void reipl(unsigned long devno);
+extern void reipl_diag(void);
static void do_machine_restart_nonsmp(char * __unused)
{
+ reipl_diag();
+
if (MACHINE_IS_VM)
- cpcmd ("IPL", NULL, 0);
+ cpcmd ("IPL", NULL, 0, NULL);
else
reipl (0x10000 | S390_lowcore.ipl_device);
}
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);
}
_machine_power_off();
}
+/*
+ * Dummy power off function.
+ */
+void (*pm_power_off)(void) = machine_power_off;
+
static void __init
add_memory_hole(unsigned long start, unsigned long end)
{
__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_ARCH_S390X
+#ifndef CONFIG_64BIT
if (MACHINE_HAS_IEEE) {
lc->extended_save_area_addr = (__u32)
__alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0);
/*
* print what head.S has found out about the machine
*/
-#ifndef CONFIG_ARCH_S390X
+#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_ARCH_S390X */
+#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_ARCH_S390X */
+#endif /* CONFIG_64BIT */
ROOT_DEV = Root_RAM0;
-#ifndef CONFIG_ARCH_S390X
+#ifndef CONFIG_64BIT
memory_end = memory_size & ~0x400000UL; /* align memory end to 4MB */
/*
* We need some free virtual space to be able to do vmalloc.
*/
if (memory_end > 1920*1024*1024)
memory_end = 1920*1024*1024;
-#else /* CONFIG_ARCH_S390X */
+#else /* CONFIG_64BIT */
memory_end = memory_size & ~0x200000UL; /* detected in head.s */
-#endif /* CONFIG_ARCH_S390X */
+#endif /* CONFIG_64BIT */
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) &_etext;
init_mm.brk = (unsigned long) &_end;
parse_cmdline_early(cmdline_p);
+ parse_early_param();
setup_memory();
setup_resources();
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.
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"
cpuinfo->cpu_id.ident,
cpuinfo->cpu_id.machine);
}
+ preempt_enable();
return 0;
}
.show = show_cpuinfo,
};
+#define DEFINE_IPL_ATTR(_name, _format, _value) \
+static ssize_t ipl_##_name##_show(struct subsystem *subsys, \
+ char *page) \
+{ \
+ return sprintf(page, _format, _value); \
+} \
+static struct subsys_attribute ipl_##_name##_attr = \
+ __ATTR(_name, S_IRUGO, ipl_##_name##_show, NULL);
+
+DEFINE_IPL_ATTR(wwpn, "0x%016llx\n", (unsigned long long)
+ IPL_PARMBLOCK_START->fcp.wwpn);
+DEFINE_IPL_ATTR(lun, "0x%016llx\n", (unsigned long long)
+ IPL_PARMBLOCK_START->fcp.lun);
+DEFINE_IPL_ATTR(bootprog, "%lld\n", (unsigned long long)
+ IPL_PARMBLOCK_START->fcp.bootprog);
+DEFINE_IPL_ATTR(br_lba, "%lld\n", (unsigned long long)
+ IPL_PARMBLOCK_START->fcp.br_lba);
+
+enum ipl_type_type {
+ ipl_type_unknown,
+ ipl_type_ccw,
+ ipl_type_fcp,
+};
+
+static enum ipl_type_type
+get_ipl_type(void)
+{
+ struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
+
+ if (!IPL_DEVNO_VALID)
+ return ipl_type_unknown;
+ if (!IPL_PARMBLOCK_VALID)
+ return ipl_type_ccw;
+ if (ipl->hdr.header.version > IPL_MAX_SUPPORTED_VERSION)
+ return ipl_type_unknown;
+ if (ipl->fcp.pbt != IPL_TYPE_FCP)
+ return ipl_type_unknown;
+ return ipl_type_fcp;
+}
+
+static ssize_t
+ipl_type_show(struct subsystem *subsys, char *page)
+{
+ switch (get_ipl_type()) {
+ case ipl_type_ccw:
+ return sprintf(page, "ccw\n");
+ case ipl_type_fcp:
+ return sprintf(page, "fcp\n");
+ default:
+ return sprintf(page, "unknown\n");
+ }
+}
+
+static struct subsys_attribute ipl_type_attr = __ATTR_RO(ipl_type);
+
+static ssize_t
+ipl_device_show(struct subsystem *subsys, char *page)
+{
+ struct ipl_parameter_block *ipl = IPL_PARMBLOCK_START;
+
+ switch (get_ipl_type()) {
+ case ipl_type_ccw:
+ return sprintf(page, "0.0.%04x\n", ipl_devno);
+ case ipl_type_fcp:
+ return sprintf(page, "0.0.%04x\n", ipl->fcp.devno);
+ default:
+ return 0;
+ }
+}
+
+static struct subsys_attribute ipl_device_attr =
+ __ATTR(device, S_IRUGO, ipl_device_show, NULL);
+
+static struct attribute *ipl_fcp_attrs[] = {
+ &ipl_type_attr.attr,
+ &ipl_device_attr.attr,
+ &ipl_wwpn_attr.attr,
+ &ipl_lun_attr.attr,
+ &ipl_bootprog_attr.attr,
+ &ipl_br_lba_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ipl_fcp_attr_group = {
+ .attrs = ipl_fcp_attrs,
+};
+
+static struct attribute *ipl_ccw_attrs[] = {
+ &ipl_type_attr.attr,
+ &ipl_device_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ipl_ccw_attr_group = {
+ .attrs = ipl_ccw_attrs,
+};
+
+static struct attribute *ipl_unknown_attrs[] = {
+ &ipl_type_attr.attr,
+ NULL,
+};
+
+static struct attribute_group ipl_unknown_attr_group = {
+ .attrs = ipl_unknown_attrs,
+};
+
+static ssize_t
+ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+ unsigned int size = IPL_PARMBLOCK_SIZE;
+
+ if (off > size)
+ return 0;
+ if (off + count > size)
+ count = size - off;
+
+ memcpy(buf, (void *) IPL_PARMBLOCK_START + off, count);
+ return count;
+}
+
+static struct bin_attribute ipl_parameter_attr = {
+ .attr = {
+ .name = "binary_parameter",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE,
+ },
+ .size = PAGE_SIZE,
+ .read = &ipl_parameter_read,
+};
+
+static ssize_t
+ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
+{
+ unsigned int size = IPL_PARMBLOCK_START->fcp.scp_data_len;
+ void *scp_data = &IPL_PARMBLOCK_START->fcp.scp_data;
+
+ if (off > size)
+ return 0;
+ if (off + count > size)
+ count = size - off;
+
+ memcpy(buf, scp_data + off, count);
+ return count;
+}
+
+static struct bin_attribute ipl_scp_data_attr = {
+ .attr = {
+ .name = "scp_data",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE,
+ },
+ .size = PAGE_SIZE,
+ .read = &ipl_scp_data_read,
+};
+
+static decl_subsys(ipl, NULL, NULL);
+
+static int __init
+ipl_device_sysfs_register(void) {
+ int rc;
+
+ rc = firmware_register(&ipl_subsys);
+ if (rc)
+ return rc;
+
+ switch (get_ipl_type()) {
+ case ipl_type_ccw:
+ sysfs_create_group(&ipl_subsys.kset.kobj, &ipl_ccw_attr_group);
+ break;
+ case ipl_type_fcp:
+ sysfs_create_group(&ipl_subsys.kset.kobj, &ipl_fcp_attr_group);
+ sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+ &ipl_parameter_attr);
+ sysfs_create_bin_file(&ipl_subsys.kset.kobj,
+ &ipl_scp_data_attr);
+ break;
+ default:
+ sysfs_create_group(&ipl_subsys.kset.kobj,
+ &ipl_unknown_attr_group);
+ break;
+ }
+ return 0;
+}
+
+__initcall(ipl_device_sysfs_register);