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Diffstat (limited to 'arch/s390/kernel/setup.c')
-rw-r--r--arch/s390/kernel/setup.c185
1 files changed, 54 insertions, 131 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 400b040df7fa..b7a1efd5522c 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -14,6 +14,9 @@
* This file handles the architecture-dependent parts of initialization
*/
+#define KMSG_COMPONENT "setup"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/sched.h>
@@ -32,7 +35,6 @@
#include <linux/bootmem.h>
#include <linux/root_dev.h>
#include <linux/console.h>
-#include <linux/seq_file.h>
#include <linux/kernel_stat.h>
#include <linux/device.h>
#include <linux/notifier.h>
@@ -291,8 +293,8 @@ unsigned int switch_amode = 0;
#endif
EXPORT_SYMBOL_GPL(switch_amode);
-static void set_amode_and_uaccess(unsigned long user_amode,
- unsigned long user32_amode)
+static int set_amode_and_uaccess(unsigned long user_amode,
+ unsigned long user32_amode)
{
psw_user_bits = PSW_BASE_BITS | PSW_MASK_DAT | user_amode |
PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK |
@@ -309,11 +311,11 @@ static void set_amode_and_uaccess(unsigned long user_amode,
PSW_MASK_MCHECK | PSW_DEFAULT_KEY;
if (MACHINE_HAS_MVCOS) {
- printk("mvcos available.\n");
memcpy(&uaccess, &uaccess_mvcos_switch, sizeof(uaccess));
+ return 1;
} else {
- printk("mvcos not available.\n");
memcpy(&uaccess, &uaccess_pt, sizeof(uaccess));
+ return 0;
}
}
@@ -328,9 +330,10 @@ static int __init early_parse_switch_amode(char *p)
early_param("switch_amode", early_parse_switch_amode);
#else /* CONFIG_S390_SWITCH_AMODE */
-static inline void set_amode_and_uaccess(unsigned long user_amode,
- unsigned long user32_amode)
+static inline int set_amode_and_uaccess(unsigned long user_amode,
+ unsigned long user32_amode)
{
+ return 0;
}
#endif /* CONFIG_S390_SWITCH_AMODE */
@@ -355,11 +358,20 @@ early_param("noexec", early_parse_noexec);
static void setup_addressing_mode(void)
{
if (s390_noexec) {
- printk("S390 execute protection active, ");
- set_amode_and_uaccess(PSW_ASC_SECONDARY, PSW32_ASC_SECONDARY);
+ if (set_amode_and_uaccess(PSW_ASC_SECONDARY,
+ PSW32_ASC_SECONDARY))
+ pr_info("Execute protection active, "
+ "mvcos available\n");
+ else
+ pr_info("Execute protection active, "
+ "mvcos not available\n");
} else if (switch_amode) {
- printk("S390 address spaces switched, ");
- set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY);
+ if (set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY))
+ pr_info("Address spaces switched, "
+ "mvcos available\n");
+ else
+ pr_info("Address spaces switched, "
+ "mvcos not available\n");
}
#ifdef CONFIG_TRACE_IRQFLAGS
sysc_restore_trace_psw.mask = psw_kernel_bits & ~PSW_MASK_MCHECK;
@@ -572,15 +584,15 @@ setup_memory(void)
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"
+ pr_err("initrd extends beyond end of "
+ "memory (0x%08lx > 0x%08lx) "
"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);
+ pr_info("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;
@@ -642,8 +654,9 @@ setup_memory(void)
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",
+ pr_err("initrd extends beyond end of "
+ "memory (0x%08lx > 0x%08lx) "
+ "disabling initrd\n",
initrd_start + INITRD_SIZE, memory_end);
initrd_start = initrd_end = 0;
}
@@ -651,23 +664,6 @@ setup_memory(void)
#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.
*/
@@ -739,8 +735,13 @@ static void __init setup_hwcaps(void)
strcpy(elf_platform, "z990");
break;
case 0x2094:
+ case 0x2096:
strcpy(elf_platform, "z9-109");
break;
+ case 0x2097:
+ case 0x2098:
+ strcpy(elf_platform, "z10");
+ break;
}
}
@@ -752,25 +753,34 @@ static void __init setup_hwcaps(void)
void __init
setup_arch(char **cmdline_p)
{
+ /* set up preferred console */
+ add_preferred_console("ttyS", 0, NULL);
+
/*
* print what head.S has found out about the machine
*/
#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");
+ if (MACHINE_IS_VM)
+ pr_info("Linux is running as a z/VM "
+ "guest operating system in 31-bit mode\n");
+ else
+ pr_info("Linux is running natively in 31-bit mode\n");
+ if (MACHINE_HAS_IEEE)
+ pr_info("The hardware system has IEEE compatible "
+ "floating point units\n");
+ else
+ pr_info("The hardware system has no IEEE compatible "
+ "floating point units\n");
#else /* CONFIG_64BIT */
if (MACHINE_IS_VM)
- printk("We are running under VM (64 bit mode)\n");
+ pr_info("Linux is running as a z/VM "
+ "guest operating system in 64-bit mode\n");
else if (MACHINE_IS_KVM) {
- printk("We are running under KVM (64 bit mode)\n");
+ pr_info("Linux is running under KVM in 64-bit mode\n");
add_preferred_console("hvc", 0, NULL);
s390_virtio_console_init();
} else
- printk("We are running native (64 bit mode)\n");
+ pr_info("Linux is running natively in 64-bit mode\n");
#endif /* CONFIG_64BIT */
/* Have one command line that is parsed and saved in /proc/cmdline */
@@ -818,90 +828,3 @@ setup_arch(char **cmdline_p)
/* Setup zfcpdump support */
setup_zfcpdump(console_devno);
}
-
-void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo)
-{
- printk(KERN_INFO "cpu %d "
-#ifdef CONFIG_SMP
- "phys_idx=%d "
-#endif
- "vers=%02X ident=%06X machine=%04X unused=%04X\n",
- cpuinfo->cpu_nr,
-#ifdef CONFIG_SMP
- cpuinfo->cpu_addr,
-#endif
- cpuinfo->cpu_id.version,
- cpuinfo->cpu_id.ident,
- cpuinfo->cpu_id.machine,
- cpuinfo->cpu_id.unused);
-}
-
-/*
- * show_cpuinfo - Get information on one CPU for use by procfs.
- */
-
-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();
- if (!n) {
- seq_printf(m, "vendor_id : IBM/S390\n"
- "# processors : %i\n"
- "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)
- cpuinfo = &S390_lowcore.cpu_data;
- else
- cpuinfo = &lowcore_ptr[n]->cpu_data;
-#else
- cpuinfo = &S390_lowcore.cpu_data;
-#endif
- seq_printf(m, "processor %li: "
- "version = %02X, "
- "identification = %06X, "
- "machine = %04X\n",
- n, cpuinfo->cpu_id.version,
- cpuinfo->cpu_id.ident,
- cpuinfo->cpu_id.machine);
- }
- preempt_enable();
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < NR_CPUS ? (void *)((unsigned long) *pos + 1) : NULL;
-}
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return c_start(m, pos);
-}
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 18:53:11 +0000