1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/kernel.h>
3 #include <linux/stdarg.h>
4 #include <linux/string.h>
5 #include <linux/ctype.h>
6 #include <asm/stacktrace.h>
7 #include <asm/boot_data.h>
8 #include <asm/lowcore.h>
9 #include <asm/setup.h>
10 #include <asm/sclp.h>
11 #include <asm/uv.h>
12 #include "boot.h"
13
print_stacktrace(unsigned long sp)14 void print_stacktrace(unsigned long sp)
15 {
16 struct stack_info boot_stack = { STACK_TYPE_TASK, (unsigned long)_stack_start,
17 (unsigned long)_stack_end };
18 bool first = true;
19
20 boot_printk("Call Trace:\n");
21 while (!(sp & 0x7) && on_stack(&boot_stack, sp, sizeof(struct stack_frame))) {
22 struct stack_frame *sf = (struct stack_frame *)sp;
23
24 boot_printk(first ? "(sp:%016lx [<%016lx>] %pS)\n" :
25 " sp:%016lx [<%016lx>] %pS\n",
26 sp, sf->gprs[8], (void *)sf->gprs[8]);
27 if (sf->back_chain <= sp)
28 break;
29 sp = sf->back_chain;
30 first = false;
31 }
32 }
33
print_pgm_check_info(void)34 void print_pgm_check_info(void)
35 {
36 unsigned long *gpregs = (unsigned long *)get_lowcore()->gpregs_save_area;
37 struct psw_bits *psw = &psw_bits(get_lowcore()->psw_save_area);
38
39 boot_printk("Linux version %s\n", kernel_version);
40 if (!is_prot_virt_guest() && early_command_line[0])
41 boot_printk("Kernel command line: %s\n", early_command_line);
42 boot_printk("Kernel fault: interruption code %04x ilc:%x\n",
43 get_lowcore()->pgm_code, get_lowcore()->pgm_ilc >> 1);
44 if (kaslr_enabled()) {
45 boot_printk("Kernel random base: %lx\n", __kaslr_offset);
46 boot_printk("Kernel random base phys: %lx\n", __kaslr_offset_phys);
47 }
48 boot_printk("PSW : %016lx %016lx (%pS)\n",
49 get_lowcore()->psw_save_area.mask,
50 get_lowcore()->psw_save_area.addr,
51 (void *)get_lowcore()->psw_save_area.addr);
52 boot_printk(
53 " 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",
54 psw->per, psw->dat, psw->io, psw->ext, psw->key, psw->mcheck,
55 psw->wait, psw->pstate, psw->as, psw->cc, psw->pm, psw->ri,
56 psw->eaba);
57 boot_printk("GPRS: %016lx %016lx %016lx %016lx\n", gpregs[0], gpregs[1], gpregs[2], gpregs[3]);
58 boot_printk(" %016lx %016lx %016lx %016lx\n", gpregs[4], gpregs[5], gpregs[6], gpregs[7]);
59 boot_printk(" %016lx %016lx %016lx %016lx\n", gpregs[8], gpregs[9], gpregs[10], gpregs[11]);
60 boot_printk(" %016lx %016lx %016lx %016lx\n", gpregs[12], gpregs[13], gpregs[14], gpregs[15]);
61 print_stacktrace(get_lowcore()->gpregs_save_area[15]);
62 boot_printk("Last Breaking-Event-Address:\n");
63 boot_printk(" [<%016lx>] %pS\n", (unsigned long)get_lowcore()->pgm_last_break,
64 (void *)get_lowcore()->pgm_last_break);
65 }
66