#include <linux/kernel_stat.h>
#include <linux/device.h>
#include <linux/notifier.h>
+#include <linux/pfn.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/ptrace.h>
#include <asm/sections.h>
+/*
+ * User copy operations.
+ */
+struct uaccess_ops uaccess;
+EXPORT_SYMBOL_GPL(uaccess);
+
/*
* Machine setup..
*/
/*
* 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;
/*
/*
* 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, NULL);
- else
- reipl (0x10000 | S390_lowcore.ipl_device);
+ do_reipl();
}
static void do_machine_halt_nonsmp(void)
* 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):
*/
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;
memory_end = memory_size;
+ if (MACHINE_HAS_MVCOS)
+ memcpy(&uaccess, &uaccess_mvcos, sizeof(uaccess));
+ else
+ memcpy(&uaccess, &uaccess_std, sizeof(uaccess));
+
parse_early_param();
#ifndef CONFIG_64BIT
.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);
git.openpandora.org / pandora-kernel.git / blobdiff