diff options
Diffstat (limited to 'util/cbmem')
| -rw-r--r-- | util/cbmem/cbmem.c | 41 |
1 files changed, 37 insertions, 4 deletions
diff --git a/util/cbmem/cbmem.c b/util/cbmem/cbmem.c index 7b7f10d53f..c1b1caa572 100644 --- a/util/cbmem/cbmem.c +++ b/util/cbmem/cbmem.c @@ -31,6 +31,7 @@ #include <sys/mman.h> #include <libgen.h> #include <assert.h> +#include <regex.h> #include <commonlib/cbmem_id.h> #include <commonlib/timestamp_serialized.h> #include <commonlib/coreboot_tables.h> @@ -611,7 +612,7 @@ struct cbmem_console { #define CBMC_OVERFLOW (1 << 31) /* dump the cbmem console */ -static void dump_console(void) +static void dump_console(int one_boot_only) { struct cbmem_console *console_p; char *console_c; @@ -659,8 +660,32 @@ static void dump_console(void) for (cursor = 0; cursor < size; cursor++) if (!isprint(console_c[cursor]) && !isspace(console_c[cursor])) console_c[cursor] = '?'; - printf("%s\n", console_c); + /* We detect the last boot by looking for a bootblock, romstage or + ramstage banner, in that order (to account for platforms without + CONFIG_BOOTBLOCK_CONSOLE and/or CONFIG_EARLY_CONSOLE). Once we find + a banner, store the last match for that stage in cursor and stop. */ + cursor = 0; + if (one_boot_only) { +#define BANNER_REGEX(stage) "\n\ncoreboot-[^\n]* " stage " starting\\.\\.\\.\n" + const char *regex[] = { BANNER_REGEX("bootblock"), + BANNER_REGEX("romstage"), + BANNER_REGEX("ramstage")}; + int i; + + for (i = 0; !cursor && i < ARRAY_SIZE(regex); i++) { + regex_t re; + regmatch_t match; + assert(!regcomp(&re, regex[i], 0)); + + /* Keep looking for matches so we find the last one. */ + while (!regexec(&re, console_c + cursor, 1, &match, 0)) + cursor += match.rm_so + 1; + regfree(&re); + } + } + + puts(console_c + cursor); free(console_c); unmap_memory(); } @@ -936,6 +961,7 @@ static void print_usage(const char *name, int exit_code) printf("usage: %s [-cCltTxVvh?]\n", name); printf("\n" " -c | --console: print cbmem console\n" + " -1 | --oneboot: print cbmem console for last boot only\n" " -C | --coverage: dump coverage information\n" " -l | --list: print cbmem table of contents\n" " -x | --hexdump: print hexdump of cbmem area\n" @@ -1074,11 +1100,13 @@ int main(int argc, char** argv) int print_rawdump = 0; int print_timestamps = 0; int machine_readable_timestamps = 0; + int one_boot_only = 0; unsigned int rawdump_id = 0; int opt, option_index = 0; static struct option long_options[] = { {"console", 0, 0, 'c'}, + {"oneboot", 0, 0, '1'}, {"coverage", 0, 0, 'C'}, {"list", 0, 0, 'l'}, {"timestamps", 0, 0, 't'}, @@ -1090,13 +1118,18 @@ int main(int argc, char** argv) {"help", 0, 0, 'h'}, {0, 0, 0, 0} }; - while ((opt = getopt_long(argc, argv, "cCltTxVvh?r:", + while ((opt = getopt_long(argc, argv, "c1CltTxVvh?r:", long_options, &option_index)) != EOF) { switch (opt) { case 'c': print_console = 1; print_defaults = 0; break; + case '1': + print_console = 1; + one_boot_only = 1; + print_defaults = 0; + break; case 'C': print_coverage = 1; print_defaults = 0; @@ -1211,7 +1244,7 @@ int main(int argc, char** argv) #endif if (print_console) - dump_console(); + dump_console(one_boot_only); if (print_coverage) dump_coverage(); |