#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/user.h>
-#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/pfn.h>
#include <linux/ctype.h>
#include <linux/reboot.h>
+#include <linux/topology.h>
#include <asm/ipl.h>
#include <asm/uaccess.h>
#include <asm/sections.h>
#include <asm/ebcdic.h>
#include <asm/compat.h>
+#include <asm/kvm_virtio.h>
long psw_kernel_bits = (PSW_BASE_BITS | PSW_MASK_DAT | PSW_ASC_PRIMARY |
PSW_MASK_MCHECK | PSW_DEFAULT_KEY);
* User copy operations.
*/
struct uaccess_ops uaccess;
-EXPORT_SYMBOL_GPL(uaccess);
+EXPORT_SYMBOL(uaccess);
/*
* Machine setup..
unsigned int console_mode = 0;
unsigned int console_devno = -1;
unsigned int console_irq = -1;
-unsigned long machine_flags = 0;
+unsigned long machine_flags;
+unsigned long elf_hwcap = 0;
+char elf_platform[ELF_PLATFORM_SIZE];
struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS];
volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
/*
* cpu_init() initializes state that is per-CPU.
*/
-void __devinit cpu_init (void)
+void __cpuinit cpu_init(void)
{
int addr = hard_smp_processor_id();
enter_lazy_tlb(&init_mm, current);
}
-/*
- * VM halt and poweroff setup routines
- */
-char vmhalt_cmd[128] = "";
-char vmpoff_cmd[128] = "";
-static char vmpanic_cmd[128] = "";
-
-static void strncpy_skip_quote(char *dst, char *src, int n)
-{
- int sx, dx;
-
- dx = 0;
- for (sx = 0; src[sx] != 0; sx++) {
- if (src[sx] == '"') continue;
- dst[dx++] = src[sx];
- if (dx >= n) break;
- }
-}
-
-static int __init vmhalt_setup(char *str)
-{
- strncpy_skip_quote(vmhalt_cmd, str, 127);
- vmhalt_cmd[127] = 0;
- return 1;
-}
-
-__setup("vmhalt=", vmhalt_setup);
-
-static int __init vmpoff_setup(char *str)
-{
- strncpy_skip_quote(vmpoff_cmd, str, 127);
- vmpoff_cmd[127] = 0;
- return 1;
-}
-
-__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.
*/
static int __init conmode_setup(char *str)
{
-#if defined(CONFIG_SCLP_CONSOLE)
+#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
if (strncmp(str, "hwc", 4) == 0 || strncmp(str, "sclp", 5) == 0)
SET_CONSOLE_SCLP;
#endif
*/
cpcmd("TERM CONMODE 3215", NULL, 0, NULL);
if (ptr == NULL) {
-#if defined(CONFIG_SCLP_CONSOLE)
+#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
SET_CONSOLE_SCLP;
#endif
return;
SET_CONSOLE_3270;
#elif defined(CONFIG_TN3215_CONSOLE)
SET_CONSOLE_3215;
-#elif defined(CONFIG_SCLP_CONSOLE)
+#elif defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
SET_CONSOLE_SCLP;
#endif
} else if (strncmp(ptr + 8, "3215", 4) == 0) {
SET_CONSOLE_3215;
#elif defined(CONFIG_TN3270_CONSOLE)
SET_CONSOLE_3270;
-#elif defined(CONFIG_SCLP_CONSOLE)
+#elif defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
SET_CONSOLE_SCLP;
#endif
}
- } else if (MACHINE_IS_P390) {
-#if defined(CONFIG_TN3215_CONSOLE)
- SET_CONSOLE_3215;
-#elif defined(CONFIG_TN3270_CONSOLE)
- SET_CONSOLE_3270;
-#endif
} else {
-#if defined(CONFIG_SCLP_CONSOLE)
+#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
SET_CONSOLE_SCLP;
#endif
}
#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE)
static void __init setup_zfcpdump(unsigned int console_devno)
{
- static char str[64];
+ static char str[41];
if (ipl_info.type != IPL_TYPE_FCP_DUMP)
return;
if (console_devno != -1)
- sprintf(str, "cio_ignore=all,!0.0.%04x,!0.0.%04x",
+ sprintf(str, " cio_ignore=all,!0.0.%04x,!0.0.%04x",
ipl_info.data.fcp.dev_id.devno, console_devno);
else
- sprintf(str, "cio_ignore=all,!0.0.%04x",
+ sprintf(str, " cio_ignore=all,!0.0.%04x",
ipl_info.data.fcp.dev_id.devno);
- strcat(COMMAND_LINE, str);
+ strcat(boot_command_line, str);
console_loglevel = 2;
}
#else
static inline void setup_zfcpdump(unsigned int console_devno) {}
#endif /* CONFIG_ZFCPDUMP */
-#ifdef CONFIG_SMP
-void (*_machine_restart)(char *command) = machine_restart_smp;
-void (*_machine_halt)(void) = machine_halt_smp;
-void (*_machine_power_off)(void) = machine_power_off_smp;
-#else
-/*
- * Reboot, halt and power_off routines for non SMP.
- */
-static void do_machine_restart_nonsmp(char * __unused)
-{
- do_reipl();
-}
-
-static void do_machine_halt_nonsmp(void)
-{
- if (MACHINE_IS_VM && strlen(vmhalt_cmd) > 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, NULL);
- signal_processor(smp_processor_id(), sigp_stop_and_store_status);
-}
-
-void (*_machine_restart)(char *command) = do_machine_restart_nonsmp;
-void (*_machine_halt)(void) = do_machine_halt_nonsmp;
-void (*_machine_power_off)(void) = do_machine_power_off_nonsmp;
-#endif
-
/*
* Reboot, halt and power_off stubs. They just call _machine_restart,
* _machine_halt or _machine_power_off.
void machine_restart(char *command)
{
- if (!in_interrupt() || oops_in_progress)
+ if ((!in_interrupt() && !in_atomic()) || oops_in_progress)
/*
* Only unblank the console if we are called in enabled
* context or a bust_spinlocks cleared the way for us.
}
early_param("mem", early_parse_mem);
-/*
- * "ipldelay=XXX[sm]" sets ipl delay in seconds or minutes
- */
-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);
-
- return 0;
-}
-early_param("ipldelay", early_parse_ipldelay);
-
#ifdef CONFIG_S390_SWITCH_AMODE
+#ifdef CONFIG_PGSTE
+unsigned int switch_amode = 1;
+#else
unsigned int switch_amode = 0;
+#endif
EXPORT_SYMBOL_GPL(switch_amode);
static void set_amode_and_uaccess(unsigned long user_amode,
if (s390_noexec) {
printk("S390 execute protection active, ");
set_amode_and_uaccess(PSW_ASC_SECONDARY, PSW32_ASC_SECONDARY);
- return;
- }
- if (switch_amode) {
+ } else if (switch_amode) {
printk("S390 address spaces switched, ");
set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY);
}
+#ifdef CONFIG_TRACE_IRQFLAGS
+ sysc_restore_trace_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK;
+ io_restore_trace_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK;
+#endif
}
static void __init
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->clock_comparator = -1ULL;
lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE;
lc->async_stack = (unsigned long)
__alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0) + ASYNC_SIZE;
data_resource.start = (unsigned long) &_etext;
data_resource.end = (unsigned long) &_edata - 1;
- for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {
+ for (i = 0; i < MEMORY_CHUNKS; i++) {
+ if (!memory_chunk[i].size)
+ continue;
res = alloc_bootmem_low(sizeof(struct resource));
res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
switch (memory_chunk[i].type) {
static void __init setup_memory_end(void)
{
unsigned long memory_size;
- unsigned long max_mem, max_phys;
+ unsigned long max_mem;
int i;
#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE)
memory_end = ZFCPDUMP_HSA_SIZE;
#endif
memory_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;
+ max_mem = memory_end ? min(VMEM_MAX_PHYS, memory_end) : VMEM_MAX_PHYS;
+ memory_end = min(max_mem, memory_end);
+
+ /*
+ * Make sure all chunks are MAX_ORDER aligned so we don't need the
+ * extra checks that HOLES_IN_ZONE would require.
+ */
+ for (i = 0; i < MEMORY_CHUNKS; i++) {
+ unsigned long start, end;
+ struct mem_chunk *chunk;
+ unsigned long align;
+
+ chunk = &memory_chunk[i];
+ align = 1UL << (MAX_ORDER + PAGE_SHIFT - 1);
+ start = (chunk->addr + align - 1) & ~(align - 1);
+ end = (chunk->addr + chunk->size) & ~(align - 1);
+ if (start >= end)
+ memset(chunk, 0, sizeof(*chunk));
+ else {
+ chunk->addr = start;
+ chunk->size = end - start;
+ }
+ }
for (i = 0; i < MEMORY_CHUNKS; i++) {
struct mem_chunk *chunk = &memory_chunk[i];
/*
* Reserve memory used for lowcore/command line/kernel image.
*/
- reserve_bootmem(0, (unsigned long)_ehead);
+ reserve_bootmem(0, (unsigned long)_ehead, BOOTMEM_DEFAULT);
reserve_bootmem((unsigned long)_stext,
- PFN_PHYS(start_pfn) - (unsigned long)_stext);
+ PFN_PHYS(start_pfn) - (unsigned long)_stext,
+ BOOTMEM_DEFAULT);
/*
* 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);
+ reserve_bootmem(start_pfn << PAGE_SHIFT, bootmap_size,
+ BOOTMEM_DEFAULT);
#ifdef CONFIG_BLK_DEV_INITRD
if (INITRD_START && INITRD_SIZE) {
if (INITRD_START + INITRD_SIZE <= memory_end) {
- reserve_bootmem(INITRD_START, INITRD_SIZE);
+ reserve_bootmem(INITRD_START, INITRD_SIZE,
+ BOOTMEM_DEFAULT);
initrd_start = INITRD_START;
initrd_end = initrd_start + INITRD_SIZE;
} else {
#endif
}
+static int __init __stfle(unsigned long long *list, int doublewords)
+{
+ typedef struct { unsigned long long _[doublewords]; } addrtype;
+ register unsigned long __nr asm("0") = doublewords - 1;
+
+ asm volatile(".insn s,0xb2b00000,%0" /* stfle */
+ : "=m" (*(addrtype *) list), "+d" (__nr) : : "cc");
+ return __nr + 1;
+}
+
+int __init stfle(unsigned long long *list, int doublewords)
+{
+ if (!(stfl() & (1UL << 24)))
+ return -EOPNOTSUPP;
+ return __stfle(list, doublewords);
+}
+
+/*
+ * Setup hardware capabilities.
+ */
+static void __init setup_hwcaps(void)
+{
+ static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 };
+ struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
+ unsigned long long facility_list_extended;
+ unsigned int facility_list;
+ int i;
+
+ facility_list = stfl();
+ /*
+ * The store facility list bits numbers as found in the principles
+ * of operation are numbered with bit 1UL<<31 as number 0 to
+ * bit 1UL<<0 as number 31.
+ * Bit 0: instructions named N3, "backported" to esa-mode
+ * Bit 2: z/Architecture mode is active
+ * Bit 7: the store-facility-list-extended facility is installed
+ * Bit 17: the message-security assist is installed
+ * Bit 19: the long-displacement facility is installed
+ * Bit 21: the extended-immediate facility is installed
+ * These get translated to:
+ * HWCAP_S390_ESAN3 bit 0, HWCAP_S390_ZARCH bit 1,
+ * HWCAP_S390_STFLE bit 2, HWCAP_S390_MSA bit 3,
+ * HWCAP_S390_LDISP bit 4, and HWCAP_S390_EIMM bit 5.
+ */
+ for (i = 0; i < 6; i++)
+ if (facility_list & (1UL << (31 - stfl_bits[i])))
+ elf_hwcap |= 1UL << i;
+
+ /*
+ * Check for additional facilities with store-facility-list-extended.
+ * stfle stores doublewords (8 byte) with bit 1ULL<<63 as bit 0
+ * and 1ULL<<0 as bit 63. Bits 0-31 contain the same information
+ * as stored by stfl, bits 32-xxx contain additional facilities.
+ * How many facility words are stored depends on the number of
+ * doublewords passed to the instruction. The additional facilites
+ * are:
+ * Bit 43: decimal floating point facility is installed
+ * translated to:
+ * HWCAP_S390_DFP bit 6.
+ */
+ if ((elf_hwcap & (1UL << 2)) &&
+ __stfle(&facility_list_extended, 1) > 0) {
+ if (facility_list_extended & (1ULL << (64 - 43)))
+ elf_hwcap |= 1UL << 6;
+ }
+
+ if (MACHINE_HAS_HPAGE)
+ elf_hwcap |= 1UL << 7;
+
+ switch (cpuinfo->cpu_id.machine) {
+ case 0x9672:
+#if !defined(CONFIG_64BIT)
+ default: /* Use "g5" as default for 31 bit kernels. */
+#endif
+ strcpy(elf_platform, "g5");
+ break;
+ case 0x2064:
+ case 0x2066:
+#if defined(CONFIG_64BIT)
+ default: /* Use "z900" as default for 64 bit kernels. */
+#endif
+ strcpy(elf_platform, "z900");
+ break;
+ case 0x2084:
+ case 0x2086:
+ strcpy(elf_platform, "z990");
+ break;
+ case 0x2094:
+ strcpy(elf_platform, "z9-109");
+ break;
+ }
+}
+
/*
* Setup function called from init/main.c just after the banner
* was printed.
"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");
+ if (MACHINE_IS_VM)
+ printk("We are running under VM (64 bit mode)\n");
+ else if (MACHINE_IS_KVM) {
+ printk("We are running under KVM (64 bit mode)\n");
+ add_preferred_console("hvc", 0, NULL);
+ s390_virtio_console_init();
+ } else
+ printk("We are running native (64 bit mode)\n");
#endif /* CONFIG_64BIT */
- /* Save unparsed command line copy for /proc/cmdline */
- strlcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
-
- *cmdline_p = COMMAND_LINE;
- *(*cmdline_p + COMMAND_LINE_SIZE - 1) = '\0';
+ /* Have one command line that is parsed and saved in /proc/cmdline */
+ /* boot_command_line has been already set up in early.c */
+ *cmdline_p = boot_command_line;
ROOT_DEV = Root_RAM0;
parse_early_param();
- setup_ipl_info();
+ setup_ipl();
setup_memory_end();
setup_addressing_mode();
setup_memory();
cpu_init();
__cpu_logical_map[0] = S390_lowcore.cpu_data.cpu_addr;
- smp_setup_cpu_possible_map();
+ s390_init_cpu_topology();
+
+ /*
+ * Setup capabilities (ELF_HWCAP & ELF_PLATFORM).
+ */
+ setup_hwcaps();
/*
* Create kernel page tables and switch to virtual addressing.
setup_zfcpdump(console_devno);
}
-void print_cpu_info(struct cpuinfo_S390 *cpuinfo)
+void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo)
{
- printk("cpu %d "
+ printk(KERN_INFO "cpu %d "
#ifdef CONFIG_SMP
"phys_idx=%d "
#endif
static int show_cpuinfo(struct seq_file *m, void *v)
{
+ static const char *hwcap_str[8] = {
+ "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
+ "edat"
+ };
struct cpuinfo_S390 *cpuinfo;
unsigned long n = (unsigned long) v - 1;
+ int i;
s390_adjust_jiffies();
preempt_disable();
"bogomips per cpu: %lu.%02lu\n",
num_online_cpus(), loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ))%100);
+ seq_puts(m, "features\t: ");
+ for (i = 0; i < 8; i++)
+ if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
+ seq_printf(m, "%s ", hwcap_str[i]);
+ seq_puts(m, "\n");
}
+
if (cpu_online(n)) {
#ifdef CONFIG_SMP
if (smp_processor_id() == n)
static void c_stop(struct seq_file *m, void *v)
{
}
-struct seq_operations cpuinfo_op = {
+const struct seq_operations cpuinfo_op = {
.start = c_start,
.next = c_next,
.stop = c_stop,
projects / linux-2.6-omap-h63xx.git / blobdiff