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path: root/arch/s390/boot/pgm_check_info.c
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Diffstat (limited to 'arch/s390/boot/pgm_check_info.c')
-rw-r--r--arch/s390/boot/pgm_check_info.c160
1 files changed, 22 insertions, 138 deletions
diff --git a/arch/s390/boot/pgm_check_info.c b/arch/s390/boot/pgm_check_info.c
index 5352b3d356da..5abe59fb3bc0 100644
--- a/arch/s390/boot/pgm_check_info.c
+++ b/arch/s390/boot/pgm_check_info.c
@@ -11,131 +11,19 @@
#include <asm/uv.h>
#include "boot.h"
-const char hex_asc[] = "0123456789abcdef";
-
-static char *as_hex(char *dst, unsigned long val, int pad)
-{
- char *p, *end = p = dst + max(pad, (int)__fls(val | 1) / 4 + 1);
-
- for (*p-- = 0; p >= dst; val >>= 4)
- *p-- = hex_asc[val & 0x0f];
- return end;
-}
-
-static char *symstart(char *p)
-{
- while (*p)
- p--;
- return p + 1;
-}
-
-static noinline char *findsym(unsigned long ip, unsigned short *off, unsigned short *len)
-{
- /* symbol entries are in a form "10000 c4 startup\0" */
- char *a = _decompressor_syms_start;
- char *b = _decompressor_syms_end;
- unsigned long start;
- unsigned long size;
- char *pivot;
- char *endp;
-
- while (a < b) {
- pivot = symstart(a + (b - a) / 2);
- start = simple_strtoull(pivot, &endp, 16);
- size = simple_strtoull(endp + 1, &endp, 16);
- if (ip < start) {
- b = pivot;
- continue;
- }
- if (ip > start + size) {
- a = pivot + strlen(pivot) + 1;
- continue;
- }
- *off = ip - start;
- *len = size;
- return endp + 1;
- }
- return NULL;
-}
-
-static noinline char *strsym(void *ip)
-{
- static char buf[64];
- unsigned short off;
- unsigned short len;
- char *p;
-
- p = findsym((unsigned long)ip, &off, &len);
- if (p) {
- strncpy(buf, p, sizeof(buf));
- /* reserve 15 bytes for offset/len in symbol+0x1234/0x1234 */
- p = buf + strnlen(buf, sizeof(buf) - 15);
- strcpy(p, "+0x");
- p = as_hex(p + 3, off, 0);
- strcpy(p, "/0x");
- as_hex(p + 3, len, 0);
- } else {
- as_hex(buf, (unsigned long)ip, 16);
- }
- return buf;
-}
-
-void decompressor_printk(const char *fmt, ...)
-{
- char buf[1024] = { 0 };
- char *end = buf + sizeof(buf) - 1; /* make sure buf is 0 terminated */
- unsigned long pad;
- char *p = buf;
- va_list args;
-
- va_start(args, fmt);
- for (; p < end && *fmt; fmt++) {
- if (*fmt != '%') {
- *p++ = *fmt;
- continue;
- }
- pad = isdigit(*++fmt) ? simple_strtol(fmt, (char **)&fmt, 10) : 0;
- switch (*fmt) {
- case 's':
- p = buf + strlcat(buf, va_arg(args, char *), sizeof(buf));
- break;
- case 'p':
- if (*++fmt != 'S')
- goto out;
- p = buf + strlcat(buf, strsym(va_arg(args, void *)), sizeof(buf));
- break;
- case 'l':
- if (*++fmt != 'x' || end - p <= max(sizeof(long) * 2, pad))
- goto out;
- p = as_hex(p, va_arg(args, unsigned long), pad);
- break;
- case 'x':
- if (end - p <= max(sizeof(int) * 2, pad))
- goto out;
- p = as_hex(p, va_arg(args, unsigned int), pad);
- break;
- default:
- goto out;
- }
- }
-out:
- va_end(args);
- sclp_early_printk(buf);
-}
-
void print_stacktrace(unsigned long sp)
{
struct stack_info boot_stack = { STACK_TYPE_TASK, (unsigned long)_stack_start,
(unsigned long)_stack_end };
bool first = true;
- decompressor_printk("Call Trace:\n");
+ boot_printk("Call Trace:\n");
while (!(sp & 0x7) && on_stack(&boot_stack, sp, sizeof(struct stack_frame))) {
struct stack_frame *sf = (struct stack_frame *)sp;
- decompressor_printk(first ? "(sp:%016lx [<%016lx>] %pS)\n" :
- " sp:%016lx [<%016lx>] %pS\n",
- sp, sf->gprs[8], (void *)sf->gprs[8]);
+ boot_printk(first ? "(sp:%016lx [<%016lx>] %pS)\n" :
+ " sp:%016lx [<%016lx>] %pS\n",
+ sp, sf->gprs[8], (void *)sf->gprs[8]);
if (sf->back_chain <= sp)
break;
sp = sf->back_chain;
@@ -148,34 +36,30 @@ void print_pgm_check_info(void)
unsigned long *gpregs = (unsigned long *)get_lowcore()->gpregs_save_area;
struct psw_bits *psw = &psw_bits(get_lowcore()->psw_save_area);
- decompressor_printk("Linux version %s\n", kernel_version);
+ boot_printk("Linux version %s\n", kernel_version);
if (!is_prot_virt_guest() && early_command_line[0])
- decompressor_printk("Kernel command line: %s\n", early_command_line);
- decompressor_printk("Kernel fault: interruption code %04x ilc:%x\n",
- get_lowcore()->pgm_code, get_lowcore()->pgm_ilc >> 1);
+ boot_printk("Kernel command line: %s\n", early_command_line);
+ boot_printk("Kernel fault: interruption code %04x ilc:%x\n",
+ get_lowcore()->pgm_code, get_lowcore()->pgm_ilc >> 1);
if (kaslr_enabled()) {
- decompressor_printk("Kernel random base: %lx\n", __kaslr_offset);
- decompressor_printk("Kernel random base phys: %lx\n", __kaslr_offset_phys);
+ boot_printk("Kernel random base: %lx\n", __kaslr_offset);
+ boot_printk("Kernel random base phys: %lx\n", __kaslr_offset_phys);
}
- decompressor_printk("PSW : %016lx %016lx (%pS)\n",
- get_lowcore()->psw_save_area.mask,
- get_lowcore()->psw_save_area.addr,
- (void *)get_lowcore()->psw_save_area.addr);
- decompressor_printk(
+ boot_printk("PSW : %016lx %016lx (%pS)\n",
+ get_lowcore()->psw_save_area.mask,
+ get_lowcore()->psw_save_area.addr,
+ (void *)get_lowcore()->psw_save_area.addr);
+ boot_printk(
" R:%x T:%x IO:%x EX:%x Key:%x M:%x W:%x P:%x AS:%x CC:%x PM:%x RI:%x EA:%x\n",
psw->per, psw->dat, psw->io, psw->ext, psw->key, psw->mcheck,
psw->wait, psw->pstate, psw->as, psw->cc, psw->pm, psw->ri,
psw->eaba);
- decompressor_printk("GPRS: %016lx %016lx %016lx %016lx\n",
- gpregs[0], gpregs[1], gpregs[2], gpregs[3]);
- decompressor_printk(" %016lx %016lx %016lx %016lx\n",
- gpregs[4], gpregs[5], gpregs[6], gpregs[7]);
- decompressor_printk(" %016lx %016lx %016lx %016lx\n",
- gpregs[8], gpregs[9], gpregs[10], gpregs[11]);
- decompressor_printk(" %016lx %016lx %016lx %016lx\n",
- gpregs[12], gpregs[13], gpregs[14], gpregs[15]);
+ boot_printk("GPRS: %016lx %016lx %016lx %016lx\n", gpregs[0], gpregs[1], gpregs[2], gpregs[3]);
+ boot_printk(" %016lx %016lx %016lx %016lx\n", gpregs[4], gpregs[5], gpregs[6], gpregs[7]);
+ boot_printk(" %016lx %016lx %016lx %016lx\n", gpregs[8], gpregs[9], gpregs[10], gpregs[11]);
+ boot_printk(" %016lx %016lx %016lx %016lx\n", gpregs[12], gpregs[13], gpregs[14], gpregs[15]);
print_stacktrace(get_lowcore()->gpregs_save_area[15]);
- decompressor_printk("Last Breaking-Event-Address:\n");
- decompressor_printk(" [<%016lx>] %pS\n", (unsigned long)get_lowcore()->pgm_last_break,
- (void *)get_lowcore()->pgm_last_break);
+ boot_printk("Last Breaking-Event-Address:\n");
+ boot_printk(" [<%016lx>] %pS\n", (unsigned long)get_lowcore()->pgm_last_break,
+ (void *)get_lowcore()->pgm_last_break);
}
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