1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <linux/kernel.h>
3*4882a593Smuzhiyun #include <linux/string.h>
4*4882a593Smuzhiyun #include <asm/lowcore.h>
5*4882a593Smuzhiyun #include <asm/setup.h>
6*4882a593Smuzhiyun #include <asm/sclp.h>
7*4882a593Smuzhiyun #include "boot.h"
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun const char hex_asc[] = "0123456789abcdef";
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #define add_val_as_hex(dst, val) \
12*4882a593Smuzhiyun __add_val_as_hex(dst, (const unsigned char *)&val, sizeof(val))
13*4882a593Smuzhiyun
__add_val_as_hex(char * dst,const unsigned char * src,size_t count)14*4882a593Smuzhiyun static char *__add_val_as_hex(char *dst, const unsigned char *src, size_t count)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun while (count--)
17*4882a593Smuzhiyun dst = hex_byte_pack(dst, *src++);
18*4882a593Smuzhiyun return dst;
19*4882a593Smuzhiyun }
20*4882a593Smuzhiyun
add_str(char * dst,char * src)21*4882a593Smuzhiyun static char *add_str(char *dst, char *src)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun strcpy(dst, src);
24*4882a593Smuzhiyun return dst + strlen(dst);
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun
print_pgm_check_info(void)27*4882a593Smuzhiyun void print_pgm_check_info(void)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun struct psw_bits *psw = &psw_bits(S390_lowcore.psw_save_area);
30*4882a593Smuzhiyun unsigned short ilc = S390_lowcore.pgm_ilc >> 1;
31*4882a593Smuzhiyun char buf[256];
32*4882a593Smuzhiyun int row, col;
33*4882a593Smuzhiyun char *p;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun add_str(buf, "Linux version ");
36*4882a593Smuzhiyun strlcat(buf, kernel_version, sizeof(buf) - 1);
37*4882a593Smuzhiyun strlcat(buf, "\n", sizeof(buf));
38*4882a593Smuzhiyun sclp_early_printk(buf);
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun p = add_str(buf, "Kernel fault: interruption code ");
41*4882a593Smuzhiyun p = add_val_as_hex(buf + strlen(buf), S390_lowcore.pgm_code);
42*4882a593Smuzhiyun p = add_str(p, " ilc:");
43*4882a593Smuzhiyun *p++ = hex_asc_lo(ilc);
44*4882a593Smuzhiyun add_str(p, "\n");
45*4882a593Smuzhiyun sclp_early_printk(buf);
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun if (kaslr_enabled) {
48*4882a593Smuzhiyun p = add_str(buf, "Kernel random base: ");
49*4882a593Smuzhiyun p = add_val_as_hex(p, __kaslr_offset);
50*4882a593Smuzhiyun add_str(p, "\n");
51*4882a593Smuzhiyun sclp_early_printk(buf);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun p = add_str(buf, "PSW : ");
55*4882a593Smuzhiyun p = add_val_as_hex(p, S390_lowcore.psw_save_area.mask);
56*4882a593Smuzhiyun p = add_str(p, " ");
57*4882a593Smuzhiyun p = add_val_as_hex(p, S390_lowcore.psw_save_area.addr);
58*4882a593Smuzhiyun add_str(p, "\n");
59*4882a593Smuzhiyun sclp_early_printk(buf);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun p = add_str(buf, " R:");
62*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->per);
63*4882a593Smuzhiyun p = add_str(p, " T:");
64*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->dat);
65*4882a593Smuzhiyun p = add_str(p, " IO:");
66*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->io);
67*4882a593Smuzhiyun p = add_str(p, " EX:");
68*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->ext);
69*4882a593Smuzhiyun p = add_str(p, " Key:");
70*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->key);
71*4882a593Smuzhiyun p = add_str(p, " M:");
72*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->mcheck);
73*4882a593Smuzhiyun p = add_str(p, " W:");
74*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->wait);
75*4882a593Smuzhiyun p = add_str(p, " P:");
76*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->pstate);
77*4882a593Smuzhiyun p = add_str(p, " AS:");
78*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->as);
79*4882a593Smuzhiyun p = add_str(p, " CC:");
80*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->cc);
81*4882a593Smuzhiyun p = add_str(p, " PM:");
82*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->pm);
83*4882a593Smuzhiyun p = add_str(p, " RI:");
84*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->ri);
85*4882a593Smuzhiyun p = add_str(p, " EA:");
86*4882a593Smuzhiyun *p++ = hex_asc_lo(psw->eaba);
87*4882a593Smuzhiyun add_str(p, "\n");
88*4882a593Smuzhiyun sclp_early_printk(buf);
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun for (row = 0; row < 4; row++) {
91*4882a593Smuzhiyun p = add_str(buf, row == 0 ? "GPRS:" : " ");
92*4882a593Smuzhiyun for (col = 0; col < 4; col++) {
93*4882a593Smuzhiyun p = add_str(p, " ");
94*4882a593Smuzhiyun p = add_val_as_hex(p, S390_lowcore.gpregs_save_area[row * 4 + col]);
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun add_str(p, "\n");
97*4882a593Smuzhiyun sclp_early_printk(buf);
98*4882a593Smuzhiyun }
99*4882a593Smuzhiyun }
100