diff options
Diffstat (limited to 'util/nvramtool/nvramtool.c')
| -rw-r--r-- | util/nvramtool/nvramtool.c | 1040 |
1 files changed, 539 insertions, 501 deletions
diff --git a/util/nvramtool/nvramtool.c b/util/nvramtool/nvramtool.c index 86ada99a49..f26ca97e8a 100644 --- a/util/nvramtool/nvramtool.c +++ b/util/nvramtool/nvramtool.c @@ -41,74 +41,72 @@ typedef void (*op_fn_t) (void); -static void op_show_version (void); -static void op_show_usage (void); -static void op_lbtable_show_info (void); -static void op_lbtable_dump (void); -static void op_show_param_values (void); -static void op_cmos_show_one_param (void); -static void op_cmos_show_all_params (void); -static void op_cmos_set_one_param (void); -static void op_cmos_set_params_stdin (void); -static void op_cmos_set_params_file (void); -static void op_cmos_checksum (void); -static void op_show_layout (void); -static void op_write_cmos_dump (void); -static void op_read_cmos_dump (void); -static void op_show_cmos_hex_dump (void); -static void op_show_cmos_dumpfile (void); -static int list_one_param (const char name[], int show_name); -static int list_all_params (void); -static void list_param_enums (const char name[]); -static void set_one_param (const char name[], const char value[]); -static void set_params (FILE *f); -static void parse_assignment (char arg[], const char **name, - const char **value); -static int list_cmos_entry (const cmos_entry_t *e, int show_name); -static uint16_t convert_checksum_value (const char value[]); - -static const op_fn_t op_fns[] = - { op_show_version, - op_show_usage, - op_lbtable_show_info, - op_lbtable_dump, - op_show_param_values, - op_cmos_show_one_param, - op_cmos_show_all_params, - op_cmos_set_one_param, - op_cmos_set_params_stdin, - op_cmos_set_params_file, - op_cmos_checksum, - op_show_layout, - op_write_cmos_dump, - op_read_cmos_dump, - op_show_cmos_hex_dump, - op_show_cmos_dumpfile - }; +static void op_show_version(void); +static void op_show_usage(void); +static void op_lbtable_show_info(void); +static void op_lbtable_dump(void); +static void op_show_param_values(void); +static void op_cmos_show_one_param(void); +static void op_cmos_show_all_params(void); +static void op_cmos_set_one_param(void); +static void op_cmos_set_params_stdin(void); +static void op_cmos_set_params_file(void); +static void op_cmos_checksum(void); +static void op_show_layout(void); +static void op_write_cmos_dump(void); +static void op_read_cmos_dump(void); +static void op_show_cmos_hex_dump(void); +static void op_show_cmos_dumpfile(void); +static int list_one_param(const char name[], int show_name); +static int list_all_params(void); +static void list_param_enums(const char name[]); +static void set_one_param(const char name[], const char value[]); +static void set_params(FILE * f); +static void parse_assignment(char arg[], const char **name, const char **value); +static int list_cmos_entry(const cmos_entry_t * e, int show_name); +static uint16_t convert_checksum_value(const char value[]); + +static const op_fn_t op_fns[] = { op_show_version, + op_show_usage, + op_lbtable_show_info, + op_lbtable_dump, + op_show_param_values, + op_cmos_show_one_param, + op_cmos_show_all_params, + op_cmos_set_one_param, + op_cmos_set_params_stdin, + op_cmos_set_params_file, + op_cmos_checksum, + op_show_layout, + op_write_cmos_dump, + op_read_cmos_dump, + op_show_cmos_hex_dump, + op_show_cmos_dumpfile +}; static const hexdump_format_t cmos_dump_format = - { 16, 2, "", " | ", " ", " | ", '.', NULL }; + { 16, 2, "", " | ", " ", " | ", '.', NULL }; /**************************************************************************** * main ****************************************************************************/ -int main (int argc, char *argv[]) - { cmos_layout_get_fn_t fn; +int main(int argc, char *argv[]) +{ + cmos_layout_get_fn_t fn; - parse_nvramtool_args(argc, argv); + parse_nvramtool_args(argc, argv); - if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].found) - { set_layout_filename( - nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].param); - fn = get_layout_from_file; - } - else - fn = get_layout_from_cmos_table; + if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].found) { + set_layout_filename(nvramtool_op_modifiers + [NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].param); + fn = get_layout_from_file; + } else + fn = get_layout_from_cmos_table; - register_cmos_layout_get_fn(fn); - op_fns[nvramtool_op.op](); - return 0; - } + register_cmos_layout_get_fn(fn); + op_fns[nvramtool_op.op] (); + return 0; +} /**************************************************************************** * op_show_version @@ -117,8 +115,10 @@ int main (int argc, char *argv[]) * * Show version information for this program. ****************************************************************************/ -static void op_show_version (void) - { printf("This is %s version %s.\n", prog_name, prog_version); } +static void op_show_version(void) +{ + printf("This is %s version %s.\n", prog_name, prog_version); +} /**************************************************************************** * op_show_usage @@ -127,8 +127,10 @@ static void op_show_version (void) * * Show a usage message for this program. ****************************************************************************/ -static void op_show_usage (void) - { usage(stdout); } +static void op_show_usage(void) +{ + usage(stdout); +} /**************************************************************************** * op_lbtable_show_info @@ -138,14 +140,15 @@ static void op_show_usage (void) * If ARG is present, show coreboot table information specified by ARG. * Else show all possible values for ARG. ****************************************************************************/ -static void op_lbtable_show_info (void) - { if (nvramtool_op.param == NULL) - list_lbtable_choices(); - else - { get_lbtable(); - list_lbtable_item(nvramtool_op.param); - } - } +static void op_lbtable_show_info(void) +{ + if (nvramtool_op.param == NULL) + list_lbtable_choices(); + else { + get_lbtable(); + list_lbtable_item(nvramtool_op.param); + } +} /**************************************************************************** * op_lbtable_dump @@ -154,10 +157,11 @@ static void op_lbtable_show_info (void) * * Do low-level dump of coreboot table. ****************************************************************************/ -static void op_lbtable_dump (void) - { get_lbtable(); - dump_lbtable(); - } +static void op_lbtable_dump(void) +{ + get_lbtable(); + dump_lbtable(); +} /**************************************************************************** * op_show_param_values @@ -166,10 +170,11 @@ static void op_lbtable_dump (void) * * Show all possible values for parameter NAME. ****************************************************************************/ -static void op_show_param_values (void) - { get_cmos_layout(); - list_param_enums(nvramtool_op.param); - } +static void op_show_param_values(void) +{ + get_cmos_layout(); + list_param_enums(nvramtool_op.param); +} /**************************************************************************** * op_cmos_show_one_param @@ -179,17 +184,19 @@ static void op_show_param_values (void) * Show parameter NAME. If -n is specified, show value only. Else show name * and value. ****************************************************************************/ -static void op_cmos_show_one_param (void) - { int result; +static void op_cmos_show_one_param(void) +{ + int result; - get_cmos_layout(); - result = list_one_param(nvramtool_op.param, - !nvramtool_op_modifiers[NVRAMTOOL_MOD_SHOW_VALUE_ONLY].found); - cmos_checksum_verify(); + get_cmos_layout(); + result = list_one_param(nvramtool_op.param, + !nvramtool_op_modifiers + [NVRAMTOOL_MOD_SHOW_VALUE_ONLY].found); + cmos_checksum_verify(); - if (result) - exit(1); - } + if (result) + exit(1); +} /**************************************************************************** * op_cmos_show_all_params @@ -198,16 +205,17 @@ static void op_cmos_show_one_param (void) * * Show names and values for all parameters. ****************************************************************************/ -static void op_cmos_show_all_params (void) - { int result; +static void op_cmos_show_all_params(void) +{ + int result; - get_cmos_layout(); - result = list_all_params(); - cmos_checksum_verify(); + get_cmos_layout(); + result = list_all_params(); + cmos_checksum_verify(); - if (result) - exit(1); - } + if (result) + exit(1); +} /**************************************************************************** * op_cmos_set_one_param @@ -216,18 +224,19 @@ static void op_cmos_show_all_params (void) * * Set parameter NAME to VALUE. ****************************************************************************/ -static void op_cmos_set_one_param (void) - { const char *name, *value; +static void op_cmos_set_one_param(void) +{ + const char *name, *value; - get_cmos_layout(); + get_cmos_layout(); - /* Separate 'NAME=VALUE' syntax into two strings representing NAME and - * VALUE. - */ - parse_assignment(nvramtool_op.param, &name, &value); + /* Separate 'NAME=VALUE' syntax into two strings representing NAME and + * VALUE. + */ + parse_assignment(nvramtool_op.param, &name, &value); - set_one_param(name, value); - } + set_one_param(name, value); +} /**************************************************************************** * op_cmos_set_params_stdin @@ -236,10 +245,11 @@ static void op_cmos_set_one_param (void) * * Set parameters according to standard input. ****************************************************************************/ -static void op_cmos_set_params_stdin (void) - { get_cmos_layout(); - set_params(stdin); - } +static void op_cmos_set_params_stdin(void) +{ + get_cmos_layout(); + set_params(stdin); +} /**************************************************************************** * op_cmos_set_params_file @@ -248,19 +258,20 @@ static void op_cmos_set_params_stdin (void) * * Set parameters according to INPUT_FILE. ****************************************************************************/ -static void op_cmos_set_params_file (void) - { FILE *f; +static void op_cmos_set_params_file(void) +{ + FILE *f; - if ((f = fopen(nvramtool_op.param, "r")) == NULL) - { fprintf(stderr, "%s: Can not open file %s for reading: %s\n", - prog_name, nvramtool_op.param, strerror(errno)); - exit(1); - } + if ((f = fopen(nvramtool_op.param, "r")) == NULL) { + fprintf(stderr, "%s: Can not open file %s for reading: %s\n", + prog_name, nvramtool_op.param, strerror(errno)); + exit(1); + } - get_cmos_layout(); - set_params(f); - fclose(f); - } + get_cmos_layout(); + set_params(f); + fclose(f); +} /**************************************************************************** * op_cmos_checksum @@ -270,24 +281,24 @@ static void op_cmos_set_params_file (void) * If VALUE is present, set coreboot CMOS checksum to VALUE. Else show * checksum value. ****************************************************************************/ -static void op_cmos_checksum (void) - { uint16_t checksum; - - get_cmos_layout(); - - if (nvramtool_op.param == NULL) - { set_iopl(3); - checksum = cmos_checksum_read(); - set_iopl(0); - printf("0x%x\n", checksum); - } - else - { checksum = convert_checksum_value(nvramtool_op.param); - set_iopl(3); - cmos_checksum_write(checksum); - set_iopl(0); - } - } +static void op_cmos_checksum(void) +{ + uint16_t checksum; + + get_cmos_layout(); + + if (nvramtool_op.param == NULL) { + set_iopl(3); + checksum = cmos_checksum_read(); + set_iopl(0); + printf("0x%x\n", checksum); + } else { + checksum = convert_checksum_value(nvramtool_op.param); + set_iopl(3); + cmos_checksum_write(checksum); + set_iopl(0); + } +} /**************************************************************************** * op_show_layout @@ -296,10 +307,11 @@ static void op_cmos_checksum (void) * * Write CMOS layout information to standard output. ****************************************************************************/ -static void op_show_layout (void) - { get_cmos_layout(); - write_cmos_layout(stdout); - } +static void op_show_layout(void) +{ + get_cmos_layout(); + write_cmos_layout(stdout); +} /**************************************************************************** * op_write_cmos_dump @@ -308,28 +320,29 @@ static void op_show_layout (void) * * Write the contents of CMOS memory to a binary file. ****************************************************************************/ -static void op_write_cmos_dump (void) - { unsigned char data[CMOS_SIZE]; - FILE *f; - - if ((f = fopen(nvramtool_op.param, "w")) == NULL) - { fprintf(stderr, "%s: Can not open file %s for writing: %s\n", - prog_name, nvramtool_op.param, strerror(errno)); - exit(1); - } - - set_iopl(3); - cmos_read_all(data); - set_iopl(0); - - if (fwrite(data, 1, CMOS_SIZE, f) != CMOS_SIZE) - { fprintf(stderr, "%s: Error writing CMOS data to file %s: %s\n", - prog_name, nvramtool_op.param, strerror(errno)); - exit(1); - } - - fclose(f); - } +static void op_write_cmos_dump(void) +{ + unsigned char data[CMOS_SIZE]; + FILE *f; + + if ((f = fopen(nvramtool_op.param, "w")) == NULL) { + fprintf(stderr, "%s: Can not open file %s for writing: %s\n", + prog_name, nvramtool_op.param, strerror(errno)); + exit(1); + } + + set_iopl(3); + cmos_read_all(data); + set_iopl(0); + + if (fwrite(data, 1, CMOS_SIZE, f) != CMOS_SIZE) { + fprintf(stderr, "%s: Error writing CMOS data to file %s: %s\n", + prog_name, nvramtool_op.param, strerror(errno)); + exit(1); + } + + fclose(f); +} /**************************************************************************** * op_read_cmos_dump @@ -338,29 +351,31 @@ static void op_write_cmos_dump (void) * * Read binary data from a file and write the data to CMOS memory. ****************************************************************************/ -static void op_read_cmos_dump (void) - { unsigned char data[CMOS_SIZE]; - size_t nr_bytes; - FILE *f; - - if ((f = fopen(nvramtool_op.param, "r")) == NULL) - { fprintf(stderr, "%s: Can not open file %s for reading: %s\n", - prog_name, nvramtool_op.param, strerror(errno)); - exit(1); - } - - if ((nr_bytes = fread(data, 1, CMOS_SIZE, f)) != CMOS_SIZE) - { fprintf(stderr, "%s: Error: Only able to read %d bytes of CMOS data " - "from file %s. CMOS data is unchanged.\n", prog_name, - (int) nr_bytes, nvramtool_op.param); - exit(1); - } - - fclose(f); - set_iopl(3); - cmos_write_all(data); - set_iopl(0); - } +static void op_read_cmos_dump(void) +{ + unsigned char data[CMOS_SIZE]; + size_t nr_bytes; + FILE *f; + + if ((f = fopen(nvramtool_op.param, "r")) == NULL) { + fprintf(stderr, "%s: Can not open file %s for reading: %s\n", + prog_name, nvramtool_op.param, strerror(errno)); + exit(1); + } + + if ((nr_bytes = fread(data, 1, CMOS_SIZE, f)) != CMOS_SIZE) { + fprintf(stderr, + "%s: Error: Only able to read %d bytes of CMOS data " + "from file %s. CMOS data is unchanged.\n", prog_name, + (int)nr_bytes, nvramtool_op.param); + exit(1); + } + + fclose(f); + set_iopl(3); + cmos_write_all(data); + set_iopl(0); +} /**************************************************************************** * op_show_cmos_hex_dump @@ -369,14 +384,15 @@ static void op_read_cmos_dump (void) * * Write a hex dump of CMOS memory to standard output. ****************************************************************************/ -static void op_show_cmos_hex_dump (void) - { unsigned char data[CMOS_SIZE]; +static void op_show_cmos_hex_dump(void) +{ + unsigned char data[CMOS_SIZE]; - set_iopl(3); - cmos_read_all(data); - set_iopl(0); - hexdump(data, CMOS_SIZE, 0, stdout, &cmos_dump_format); - } + set_iopl(3); + cmos_read_all(data); + set_iopl(0); + hexdump(data, CMOS_SIZE, 0, stdout, &cmos_dump_format); +} /**************************************************************************** * op_show_cmos_dumpfile @@ -386,21 +402,22 @@ static void op_show_cmos_hex_dump (void) * Read binary data from a file (presumably a CMOS dump file) and display a * hex dump of the CMOS data from the file. ****************************************************************************/ -static void op_show_cmos_dumpfile (void) - { unsigned char data[CMOS_SIZE]; - size_t nr_bytes; - FILE *f; - - if ((f = fopen(nvramtool_op.param, "r")) == NULL) - { fprintf(stderr, "%s: Can not open file %s for reading: %s\n", - prog_name, nvramtool_op.param, strerror(errno)); - exit(1); - } - - nr_bytes = fread(data, 1, CMOS_SIZE, f); - fclose(f); - hexdump(data, nr_bytes, 0, stdout, &cmos_dump_format); - } +static void op_show_cmos_dumpfile(void) +{ + unsigned char data[CMOS_SIZE]; + size_t nr_bytes; + FILE *f; + + if ((f = fopen(nvramtool_op.param, "r")) == NULL) { + fprintf(stderr, "%s: Can not open file %s for reading: %s\n", + prog_name, nvramtool_op.param, strerror(errno)); + exit(1); + } + + nr_bytes = fread(data, 1, CMOS_SIZE, f); + fclose(f); + hexdump(data, nr_bytes, 0, stdout, &cmos_dump_format); +} /**************************************************************************** * list_one_param @@ -409,21 +426,24 @@ static void op_show_cmos_dumpfile (void) * boolean value indicating whether the parameter name should be displayed * along with its value. Return 1 if error was encountered. Else return OK. ****************************************************************************/ -static int list_one_param (const char name[], int show_name) - { const cmos_entry_t *e; +static int list_one_param(const char name[], int show_name) +{ + const cmos_entry_t *e; - if (is_checksum_name(name) || ((e = find_cmos_entry(name)) == NULL)) - { fprintf(stderr, "%s: CMOS parameter %s not found.\n", prog_name, name); - exit(1); - } + if (is_checksum_name(name) || ((e = find_cmos_entry(name)) == NULL)) { + fprintf(stderr, "%s: CMOS parameter %s not found.\n", prog_name, + name); + exit(1); + } - if (e->config == CMOS_ENTRY_RESERVED) - { fprintf(stderr, "%s: Parameter %s is reserved.\n", prog_name, name); - exit(1); - } + if (e->config == CMOS_ENTRY_RESERVED) { + fprintf(stderr, "%s: Parameter %s is reserved.\n", prog_name, + name); + exit(1); + } - return (list_cmos_entry(e, show_name) != 0); - } + return (list_cmos_entry(e, show_name) != 0); +} /**************************************************************************** * list_all_params @@ -431,64 +451,67 @@ static int list_one_param (const char name[], int show_name) * Attempt to list all CMOS parameters. Return 1 if error was encountered. * Else return OK. ****************************************************************************/ -static int list_all_params (void) - { const cmos_entry_t *e; - int result; +static int list_all_params(void) +{ + const cmos_entry_t *e; + int result; - result = OK; + result = OK; - for (e = first_cmos_entry(); e != NULL; e = next_cmos_entry(e)) - { if ((e->config == CMOS_ENTRY_RESERVED) || is_checksum_name(e->name)) - continue; + for (e = first_cmos_entry(); e != NULL; e = next_cmos_entry(e)) { + if ((e->config == CMOS_ENTRY_RESERVED) + || is_checksum_name(e->name)) + continue; - if (list_cmos_entry(e, TRUE)) - result = 1; - } + if (list_cmos_entry(e, TRUE)) + result = 1; + } - return result; - } + return result; +} /**************************************************************************** * list_param_enums * * List all possible values for CMOS parameter given by 'name'. ****************************************************************************/ -static void list_param_enums (const char name[]) - { const cmos_entry_t *e; - const cmos_enum_t *p; - - if (is_checksum_name(name) || (e = find_cmos_entry(name)) == NULL) - { fprintf(stderr, "%s: CMOS parameter %s not found.\n", prog_name, name); - exit(1); - } - - switch (e->config) - { case CMOS_ENTRY_ENUM: - for (p = first_cmos_enum_id(e->config_id); - p != NULL; - p = next_cmos_enum_id(p)) - printf("%s\n", p->text); - - break; - - case CMOS_ENTRY_HEX: - printf("Parameter %s requires a %u-bit unsigned integer.\n", name, - e->length); - break; - - case CMOS_ENTRY_STRING: - printf("Parameter %s requires a %u-byte string.\n", name, - e->length / 8); - break; - - case CMOS_ENTRY_RESERVED: - printf("Parameter %s is reserved.\n", name); - break; - - default: - BUG(); - } - } +static void list_param_enums(const char name[]) +{ + const cmos_entry_t *e; + const cmos_enum_t *p; + + if (is_checksum_name(name) || (e = find_cmos_entry(name)) == NULL) { + fprintf(stderr, "%s: CMOS parameter %s not found.\n", prog_name, + name); + exit(1); + } + + switch (e->config) { + case CMOS_ENTRY_ENUM: + for (p = first_cmos_enum_id(e->config_id); + p != NULL; p = next_cmos_enum_id(p)) + printf("%s\n", p->text); + + break; + + case CMOS_ENTRY_HEX: + printf("Parameter %s requires a %u-bit unsigned integer.\n", + name, e->length); + break; + + case CMOS_ENTRY_STRING: + printf("Parameter %s requires a %u-byte string.\n", name, + e->length / 8); + break; + + case CMOS_ENTRY_RESERVED: + printf("Parameter %s is reserved.\n", name); + break; + + default: + BUG(); + } +} /**************************************************************************** * set_one_param @@ -500,102 +523,107 @@ static void list_param_enums (const char name[]) * a string representation of an unsigned integer that may be specified in * decimal, hex, or octal. ****************************************************************************/ -static void set_one_param (const char name[], const char value[]) - { const cmos_entry_t *e; - unsigned long long n; - - if (is_checksum_name(name) || (e = find_cmos_entry(name)) == NULL) - { fprintf(stderr, "%s: CMOS parameter %s not found.", prog_name, name); - exit(1); - } - - switch (prepare_cmos_write(e, value, &n)) - { case OK: - break; - - case CMOS_OP_BAD_ENUM_VALUE: - fprintf(stderr, "%s: Bad value for parameter %s.", prog_name, name); - goto fail; - - case CMOS_OP_NEGATIVE_INT: - fprintf(stderr, - "%s: This program does not support assignment of negative " - "numbers to coreboot parameters.", prog_name); - goto fail; - - case CMOS_OP_INVALID_INT: - fprintf(stderr, "%s: %s is not a valid integer.", prog_name, value); - goto fail; - - case CMOS_OP_RESERVED: - fprintf(stderr, - "%s: Can not modify reserved coreboot parameter %s.", - prog_name, name); - goto fail; - - case CMOS_OP_VALUE_TOO_WIDE: - fprintf(stderr, - "%s: Can not write value %s to CMOS parameter %s that is " - "only %d bits wide.", prog_name, value, name, e->length); - goto fail; - - case CMOS_OP_NO_MATCHING_ENUM: - fprintf(stderr, - "%s: coreboot parameter %s has no matching enums.", - prog_name, name); - goto fail; - - case CMOS_AREA_OUT_OF_RANGE: - fprintf(stderr, - "%s: The CMOS area specified by the layout info for " - "coreboot parameter %s is out of range.", prog_name, name); - goto fail; - - case CMOS_AREA_OVERLAPS_RTC: - fprintf(stderr, - "%s: The CMOS area specified by the layout info for " - "coreboot parameter %s overlaps the realtime clock area.", - prog_name, name); - goto fail; - - case CMOS_AREA_TOO_WIDE: - fprintf(stderr, - "%s: The CMOS area specified by the layout info for " - "coreboot parameter %s is too wide.", - prog_name, name); - goto fail; - - default: - fprintf(stderr, - "%s: Unknown error encountered while attempting to modify " - "coreboot parameter %s.", prog_name, name); - goto fail; - } - - /* write the value to nonvolatile RAM */ - set_iopl(3); - cmos_write(e, n); - cmos_checksum_write(cmos_checksum_compute()); - set_iopl(0); - return; - -fail: - fprintf(stderr, " CMOS write not performed.\n"); - exit(1); - } +static void set_one_param(const char name[], const char value[]) +{ + const cmos_entry_t *e; + unsigned long long n; + + if (is_checksum_name(name) || (e = find_cmos_entry(name)) == NULL) { + fprintf(stderr, "%s: CMOS parameter %s not found.", prog_name, + name); + exit(1); + } + + switch (prepare_cmos_write(e, value, &n)) { + case OK: + break; + + case CMOS_OP_BAD_ENUM_VALUE: + fprintf(stderr, "%s: Bad value for parameter %s.", prog_name, + name); + goto fail; + + case CMOS_OP_NEGATIVE_INT: + fprintf(stderr, + "%s: This program does not support assignment of negative " + "numbers to coreboot parameters.", prog_name); + goto fail; + + case CMOS_OP_INVALID_INT: + fprintf(stderr, "%s: %s is not a valid integer.", prog_name, + value); + goto fail; + + case CMOS_OP_RESERVED: + fprintf(stderr, + "%s: Can not modify reserved coreboot parameter %s.", + prog_name, name); + goto fail; + + case CMOS_OP_VALUE_TOO_WIDE: + fprintf(stderr, + "%s: Can not write value %s to CMOS parameter %s that is " + "only %d bits wide.", prog_name, value, name, + e->length); + goto fail; + + case CMOS_OP_NO_MATCHING_ENUM: + fprintf(stderr, + "%s: coreboot parameter %s has no matching enums.", + prog_name, name); + goto fail; + + case CMOS_AREA_OUT_OF_RANGE: + fprintf(stderr, + "%s: The CMOS area specified by the layout info for " + "coreboot parameter %s is out of range.", prog_name, + name); + goto fail; + + case CMOS_AREA_OVERLAPS_RTC: + fprintf(stderr, + "%s: The CMOS area specified by the layout info for " + "coreboot parameter %s overlaps the realtime clock area.", + prog_name, name); + goto fail; + + case CMOS_AREA_TOO_WIDE: + fprintf(stderr, + "%s: The CMOS area specified by the layout info for " + "coreboot parameter %s is too wide.", prog_name, name); + goto fail; + + default: + fprintf(stderr, + "%s: Unknown error encountered while attempting to modify " + "coreboot parameter %s.", prog_name, name); + goto fail; + } + + /* write the value to nonvolatile RAM */ + set_iopl(3); + cmos_write(e, n); + cmos_checksum_write(cmos_checksum_compute()); + set_iopl(0); + return; + + fail: + fprintf(stderr, " CMOS write not performed.\n"); + exit(1); +} /**************************************************************************** * set_params * * Set coreboot parameters according to the contents of file 'f'. ****************************************************************************/ -static void set_params (FILE *f) - { /* First process the input file. Then perform writes only if there were - * no problems processing the input. Either all values will be written - * successfully or no values will be written. - */ - do_cmos_writes(process_input_file(f)); - } +static void set_params(FILE * f) +{ /* First process the input file. Then perform writes only if there were + * no problems processing the input. Either all values will be written + * successfully or no values will be written. + */ + do_cmos_writes(process_input_file(f)); +} /**************************************************************************** * parse_assignment @@ -606,31 +634,31 @@ static void set_params (FILE *f) * into substrings representing NAME and VALUE, and *name and *value are set * to point to these two substrings. ****************************************************************************/ -static void parse_assignment (char arg[], const char **name, - const char **value) - { static const size_t N_MATCHES = 4; - regmatch_t match[N_MATCHES]; - regex_t assignment; - - compile_reg_exprs(REG_EXTENDED | REG_NEWLINE, 1, assignment_regex, - &assignment); - - /* Does 'arg' conform to proper assignment syntax? If not, exit with a - * usage message. - */ - if (regexec(&assignment, arg, N_MATCHES, match, 0)) - usage(stderr); - - /* Ok, we found a valid assignment. Break it into two strings - * representing NAME and VALUE. - */ - arg[match[1].rm_eo] = '\0'; - arg[match[2].rm_eo] = '\0'; - *name = &arg[match[1].rm_so]; - *value = &arg[match[2].rm_so]; - - free_reg_exprs(1, &assignment); - } +static void parse_assignment(char arg[], const char **name, const char **value) +{ + static const size_t N_MATCHES = 4; + regmatch_t match[N_MATCHES]; + regex_t assignment; + + compile_reg_exprs(REG_EXTENDED | REG_NEWLINE, 1, assignment_regex, + &assignment); + + /* Does 'arg' conform to proper assignment syntax? If not, exit with a + * usage message. + */ + if (regexec(&assignment, arg, N_MATCHES, match, 0)) + usage(stderr); + + /* Ok, we found a valid assignment. Break it into two strings + * representing NAME and VALUE. + */ + arg[match[1].rm_eo] = '\0'; + arg[match[2].rm_eo] = '\0'; + *name = &arg[match[1].rm_so]; + *value = &arg[match[2].rm_so]; + + free_reg_exprs(1, &assignment); +} /**************************************************************************** * list_cmos_entry @@ -640,90 +668,96 @@ static void parse_assignment (char arg[], const char **name, * along with its value. On success, return OK. On error, print an error * message and return 1. ****************************************************************************/ -static int list_cmos_entry (const cmos_entry_t *e, int show_name) - { const cmos_enum_t *p; - unsigned long long value; - - /* sanity check CMOS entry */ - switch (prepare_cmos_read(e)) - { case OK: - break; - - case CMOS_OP_RESERVED: - BUG(); - - case CMOS_AREA_OUT_OF_RANGE: - fprintf(stderr, "%s: Can not read coreboot parameter %s because " - "layout info specifies out of range CMOS area.\n", prog_name, - e->name); - return 1; - - case CMOS_AREA_OVERLAPS_RTC: - fprintf(stderr, "%s: Can not read coreboot parameter %s because " - "layout info specifies CMOS area that overlaps realtime " - "clock area.\n", prog_name, e->name); - return 1; - - case CMOS_AREA_TOO_WIDE: - fprintf(stderr, "%s: Can not read coreboot parameter %s because " - "layout info specifies CMOS area that is too wide.\n", - prog_name, e->name); - return 1; - - default: - fprintf(stderr, "%s: Unknown error encountered while attempting to " - "read coreboot parameter %s\n", prog_name, e->name); - return 1; - } - - /* read the value from CMOS */ - set_iopl(3); - value = cmos_read(e); - set_iopl(0); - - /* display the value */ - switch (e->config) - { case CMOS_ENTRY_ENUM: - if ((p = find_cmos_enum(e->config_id, value)) == NULL) - { if (show_name) - printf("# Bad value -> %s = 0x%llx\n", e->name, value); - else - printf("Bad value -> 0x%llx\n", value); - } - else - { if (show_name) - printf("%s = %s\n", e->name, p->text); - else - printf("%s\n", p->text); - } - - break; - - case CMOS_ENTRY_HEX: - if (show_name) - printf("%s = 0x%llx\n", e->name, value); - else - printf("0x%llx\n", value); - - break; - - case CMOS_ENTRY_STRING: - if (show_name) - printf("%s = %s\n", e->name, (char *)(unsigned long)value); - else - printf("%s\n", (char *)(unsigned long)value); - - free((void *)(unsigned long)value); - - break; - - case CMOS_ENTRY_RESERVED: - default: - BUG(); - } - - return OK; - } +static int list_cmos_entry(const cmos_entry_t * e, int show_name) +{ + const cmos_enum_t *p; + unsigned long long value; + + /* sanity check CMOS entry */ + switch (prepare_cmos_read(e)) { + case OK: + break; + + case CMOS_OP_RESERVED: + BUG(); + + case CMOS_AREA_OUT_OF_RANGE: + fprintf(stderr, + "%s: Can not read coreboot parameter %s because " + "layout info specifies out of range CMOS area.\n", + prog_name, e->name); + return 1; + + case CMOS_AREA_OVERLAPS_RTC: + fprintf(stderr, + "%s: Can not read coreboot parameter %s because " + "layout info specifies CMOS area that overlaps realtime " + "clock area.\n", prog_name, e->name); + return 1; + + case CMOS_AREA_TOO_WIDE: + fprintf(stderr, + "%s: Can not read coreboot parameter %s because " + "layout info specifies CMOS area that is too wide.\n", + prog_name, e->name); + return 1; + + default: + fprintf(stderr, + "%s: Unknown error encountered while attempting to " + "read coreboot parameter %s\n", prog_name, e->name); + return 1; + } + + /* read the value from CMOS */ + set_iopl(3); + value = cmos_read(e); + set_iopl(0); + + /* display the value */ + switch (e->config) { + case CMOS_ENTRY_ENUM: + if ((p = find_cmos_enum(e->config_id, value)) == NULL) { + if (show_name) + printf("# Bad value -> %s = 0x%llx\n", e->name, + value); + else + printf("Bad value -> 0x%llx\n", value); + } else { + if (show_name) + printf("%s = %s\n", e->name, p->text); + else + printf("%s\n", p->text); + } + + break; + + case CMOS_ENTRY_HEX: + if (show_name) + printf("%s = 0x%llx\n", e->name, value); + else + printf("0x%llx\n", value); + + break; + + case CMOS_ENTRY_STRING: + if (show_name) + printf("%s = %s\n", e->name, + (char *)(unsigned long)value); + else + printf("%s\n", (char *)(unsigned long)value); + + free((void *)(unsigned long)value); + + break; + + case CMOS_ENTRY_RESERVED: + default: + BUG(); + } + + return OK; +} /**************************************************************************** * convert_checksum_value @@ -733,36 +767,40 @@ static int list_cmos_entry (const cmos_entry_t *e, int show_name) * unsigned integer and return the result. Exit with an error message if * 'value' is invalid. ****************************************************************************/ -static uint16_t convert_checksum_value (const char value[]) - { unsigned long n; - const char *p; - uint16_t result; - int negative; - - for (p = value; isspace(*p); p++); - - negative = (*p == '-'); - n = strtoul(value, (char **) &p, 0); - - if (*p) - { fprintf(stderr, "%s: Checksum value %s is not a valid integer.\n", - prog_name, value); - exit(1); - } - - if (negative) - { fprintf(stderr, - "%s: Checksum must be an unsigned integer.\n", prog_name); - exit(1); - } - - result = (uint16_t) n; - - if (result != n) - { fprintf(stderr, - "%s: Checksum value must fit within 16 bits.\n", prog_name); - exit(1); - } - - return result; - } +static uint16_t convert_checksum_value(const char value[]) +{ + unsigned long n; + const char *p; + uint16_t result; + int negative; + + for (p = value; isspace(*p); p++) ; + + negative = (*p == '-'); + n = strtoul(value, (char **)&p, 0); + + if (*p) { + fprintf(stderr, + "%s: Checksum value %s is not a valid integer.\n", + prog_name, value); + exit(1); + } + + if (negative) { + fprintf(stderr, + "%s: Checksum must be an unsigned integer.\n", + prog_name); + exit(1); + } + + result = (uint16_t) n; + + if (result != n) { + fprintf(stderr, + "%s: Checksum value must fit within 16 bits.\n", + prog_name); + exit(1); + } + + return result; +} |