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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-17 14:04:43 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-17 14:04:43 -0700 |
commit | d590284419b1d7cc2dc646e9bdde4da19061cf0f (patch) | |
tree | 007a94945a82e3010c1847daeeb8f17d8e988929 /arch/s390/boot/pgm_check_info.c | |
parent | Merge tag 'for-linus' of git://github.com/openrisc/linux (diff) | |
parent | s390: remove pointless drivers-y in drivers/s390/Makefile (diff) | |
download | linux-dev-d590284419b1d7cc2dc646e9bdde4da19061cf0f.tar.xz linux-dev-d590284419b1d7cc2dc646e9bdde4da19061cf0f.zip |
Merge tag 's390-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Add support for IBM z15 machines.
- Add SHA3 and CCA AES cipher key support in zcrypt and pkey
refactoring.
- Move to arch_stack_walk infrastructure for the stack unwinder.
- Various kasan fixes and improvements.
- Various command line parsing fixes.
- Improve decompressor phase debuggability.
- Lift no bss usage restriction for the early code.
- Use refcount_t for reference counters for couple of places in mm
code.
- Logging improvements and return code fix in vfio-ccw code.
- Couple of zpci fixes and minor refactoring.
- Remove some outdated documentation.
- Fix secure boot detection.
- Other various minor code clean ups.
* tag 's390-5.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
s390: remove pointless drivers-y in drivers/s390/Makefile
s390/cpum_sf: Fix line length and format string
s390/pci: fix MSI message data
s390: add support for IBM z15 machines
s390/crypto: Support for SHA3 via CPACF (MSA6)
s390/startup: add pgm check info printing
s390/crypto: xts-aes-s390 fix extra run-time crypto self tests finding
vfio-ccw: fix error return code in vfio_ccw_sch_init()
s390: vfio-ap: fix warning reset not completed
s390/base: remove unused s390_base_mcck_handler
s390/sclp: Fix bit checked for has_sipl
s390/zcrypt: fix wrong handling of cca cipher keygenflags
s390/kasan: add kdump support
s390/setup: avoid using strncmp with hardcoded length
s390/sclp: avoid using strncmp with hardcoded length
s390/module: avoid using strncmp with hardcoded length
s390/pci: avoid using strncmp with hardcoded length
s390/kaslr: reserve memory for kasan usage
s390/mem_detect: provide single get_mem_detect_end
s390/cmma: reuse kstrtobool for option value parsing
...
Diffstat (limited to 'arch/s390/boot/pgm_check_info.c')
-rw-r--r-- | arch/s390/boot/pgm_check_info.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/arch/s390/boot/pgm_check_info.c b/arch/s390/boot/pgm_check_info.c new file mode 100644 index 000000000000..83b5b7915c32 --- /dev/null +++ b/arch/s390/boot/pgm_check_info.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/kernel.h> +#include <linux/string.h> +#include <asm/lowcore.h> +#include <asm/sclp.h> +#include "boot.h" + +const char hex_asc[] = "0123456789abcdef"; + +#define add_val_as_hex(dst, val) \ + __add_val_as_hex(dst, (const unsigned char *)&val, sizeof(val)) + +static char *__add_val_as_hex(char *dst, const unsigned char *src, size_t count) +{ + while (count--) + dst = hex_byte_pack(dst, *src++); + return dst; +} + +static char *add_str(char *dst, char *src) +{ + strcpy(dst, src); + return dst + strlen(dst); +} + +void print_pgm_check_info(void) +{ + struct psw_bits *psw = &psw_bits(S390_lowcore.psw_save_area); + unsigned short ilc = S390_lowcore.pgm_ilc >> 1; + char buf[256]; + int row, col; + char *p; + + add_str(buf, "Linux version "); + strlcat(buf, kernel_version, sizeof(buf)); + sclp_early_printk(buf); + + p = add_str(buf, "Kernel fault: interruption code "); + p = add_val_as_hex(buf + strlen(buf), S390_lowcore.pgm_code); + p = add_str(p, " ilc:"); + *p++ = hex_asc_lo(ilc); + add_str(p, "\n"); + sclp_early_printk(buf); + + p = add_str(buf, "PSW : "); + p = add_val_as_hex(p, S390_lowcore.psw_save_area.mask); + p = add_str(p, " "); + p = add_val_as_hex(p, S390_lowcore.psw_save_area.addr); + add_str(p, "\n"); + sclp_early_printk(buf); + + p = add_str(buf, " R:"); + *p++ = hex_asc_lo(psw->per); + p = add_str(p, " T:"); + *p++ = hex_asc_lo(psw->dat); + p = add_str(p, " IO:"); + *p++ = hex_asc_lo(psw->io); + p = add_str(p, " EX:"); + *p++ = hex_asc_lo(psw->ext); + p = add_str(p, " Key:"); + *p++ = hex_asc_lo(psw->key); + p = add_str(p, " M:"); + *p++ = hex_asc_lo(psw->mcheck); + p = add_str(p, " W:"); + *p++ = hex_asc_lo(psw->wait); + p = add_str(p, " P:"); + *p++ = hex_asc_lo(psw->pstate); + p = add_str(p, " AS:"); + *p++ = hex_asc_lo(psw->as); + p = add_str(p, " CC:"); + *p++ = hex_asc_lo(psw->cc); + p = add_str(p, " PM:"); + *p++ = hex_asc_lo(psw->pm); + p = add_str(p, " RI:"); + *p++ = hex_asc_lo(psw->ri); + p = add_str(p, " EA:"); + *p++ = hex_asc_lo(psw->eaba); + add_str(p, "\n"); + sclp_early_printk(buf); + + for (row = 0; row < 4; row++) { + p = add_str(buf, row == 0 ? "GPRS:" : " "); + for (col = 0; col < 4; col++) { + p = add_str(p, " "); + p = add_val_as_hex(p, S390_lowcore.gpregs_save_area[row * 4 + col]); + } + add_str(p, "\n"); + sclp_early_printk(buf); + } +} |