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Diffstat (limited to 'util/lxbios/lbtable.c')
| -rw-r--r-- | util/lxbios/lbtable.c | 1270 |
1 files changed, 0 insertions, 1270 deletions
diff --git a/util/lxbios/lbtable.c b/util/lxbios/lbtable.c deleted file mode 100644 index ec2cc8545d..0000000000 --- a/util/lxbios/lbtable.c +++ /dev/null @@ -1,1270 +0,0 @@ -/*****************************************************************************\ - * lbtable.c - * $Id$ - ***************************************************************************** - * Copyright (C) 2002-2005 The Regents of the University of California. - * Produced at the Lawrence Livermore National Laboratory. - * Written by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com> - * and Stefan Reinauer <stepan@openbios.org>. - * UCRL-CODE-2003-012 - * All rights reserved. - * - * This file is part of nvramtool, a utility for reading/writing coreboot - * parameters and displaying information from the coreboot table. - * For details, see http://coreboot.org/nvramtool. - * - * Please also read the file DISCLAIMER which is included in this software - * distribution. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License (as published by the - * Free Software Foundation) version 2, dated June 1991. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and - * conditions of the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. -\*****************************************************************************/ - -#include <sys/mman.h> -#include "common.h" -#include "coreboot_tables.h" -#include "ip_checksum.h" -#include "lbtable.h" -#include "layout.h" -#include "cmos_lowlevel.h" -#include "hexdump.h" - -typedef void (*lbtable_print_fn_t) (const struct lb_record *rec); - -/* This structure represents an item in the coreboot table that may be - * displayed using the -l option. - */ -typedef struct - { uint32_t tag; - const char *name; - const char *description; - const char *nofound_msg; - lbtable_print_fn_t print_fn; - } -lbtable_choice_t; - -typedef struct - { unsigned long start; /* address of first byte of memory range */ - unsigned long end; /* address of last byte of memory range */ - } -mem_range_t; - -static const struct lb_header * lbtable_scan (unsigned long start, - unsigned long end, - int *bad_header_count, - int *bad_table_count); -static void process_cmos_table (void); -static void get_cmos_checksum_info (void); -static void try_convert_checksum_layout (cmos_checksum_layout_t *layout); -static void try_add_cmos_table_enum (cmos_enum_t *cmos_enum); -static void try_add_cmos_table_entry (cmos_entry_t *cmos_entry); -static const struct lb_record * find_lbrec (uint32_t tag); -static const char * lbrec_tag_to_str (uint32_t tag); -static const struct cmos_entries * first_cmos_table_entry (void); -static const struct cmos_entries * - next_cmos_table_entry (const struct cmos_entries *last); -static const struct cmos_enums * first_cmos_table_enum (void); -static const struct cmos_enums * next_cmos_table_enum - (const struct cmos_enums *last); -static const struct lb_record * first_cmos_rec (uint32_t tag); -static const struct lb_record * next_cmos_rec (const struct lb_record *last, - uint32_t tag); -static void memory_print_fn (const struct lb_record *rec); -static void mainboard_print_fn (const struct lb_record *rec); -static void cmos_opt_table_print_fn (const struct lb_record *rec); -static void print_option_record (const struct cmos_entries *cmos_entry); -static void print_enum_record (const struct cmos_enums *cmos_enum); -static void print_defaults_record (const struct cmos_defaults *cmos_defaults); -static void print_unknown_record (const struct lb_record *cmos_item); -static void option_checksum_print_fn (const struct lb_record *rec); -static void string_print_fn (const struct lb_record *rec); -static void uint64_to_hex_string (char str[], uint64_t n); - -static const char memory_desc[] = -" This shows information about system memory.\n"; - -static const char mainboard_desc[] = -" This shows information about your mainboard.\n"; - -static const char version_desc[] = -" This shows coreboot version information.\n"; - -static const char extra_version_desc[] = -" This shows extra coreboot version information.\n"; - -static const char build_desc[] = -" This shows coreboot build information.\n"; - -static const char compile_time_desc[] = -" This shows when coreboot was compiled.\n"; - -static const char compile_by_desc[] = -" This shows who compiled coreboot.\n"; - -static const char compile_host_desc[] = -" This shows the name of the machine that compiled coreboot.\n"; - -static const char compile_domain_desc[] = -" This shows the domain name of the machine that compiled coreboot.\n"; - -static const char compiler_desc[] = -" This shows the name of the compiler used to build coreboot.\n"; - -static const char linker_desc[] = -" This shows the name of the linker used to build coreboot.\n"; - -static const char assembler_desc[] = -" This shows the name of the assembler used to build coreboot.\n"; - -static const char cmos_opt_table_desc[] = -" This does a low-level dump of the CMOS option table. The table " -"contains\n" -" information about the layout of the values that coreboot stores in\n" -" nonvolatile RAM.\n"; - -static const char option_checksum_desc[] = -" This shows the location of the CMOS checksum and the area over which it " -"is\n" -" calculated.\n"; - -static const char generic_nofound_msg[] = -"%s: Item %s not found in coreboot table.\n"; - -static const char nofound_msg_cmos_opt_table[] = -"%s: Item %s not found in coreboot table. Apparently, the " -"coreboot installed on this system was built without specifying " -"HAVE_OPTION_TABLE.\n"; - -static const char nofound_msg_option_checksum[] = -"%s: Item %s not found in coreboot table. Apparently, you are " -"using coreboot v1.\n"; - -/* This is the number of items from the coreboot table that may be displayed - * using the -l option. - */ -#define NUM_LBTABLE_CHOICES 14 - -/* These represent the various items from the coreboot table that may be - * displayed using the -l option. - */ -static const lbtable_choice_t lbtable_choices[NUM_LBTABLE_CHOICES] = - { { LB_TAG_MEMORY, "memory", - memory_desc, generic_nofound_msg, - memory_print_fn - }, - { LB_TAG_MAINBOARD, "mainboard", - mainboard_desc, generic_nofound_msg, - mainboard_print_fn - }, - { LB_TAG_VERSION, "version", - version_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_EXTRA_VERSION, "extra_version", - extra_version_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_BUILD, "build", - build_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_COMPILE_TIME, "compile_time", - compile_time_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_COMPILE_BY, "compile_by", - compile_by_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_COMPILE_HOST, "compile_host", - compile_host_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_COMPILE_DOMAIN, "compile_domain", - compile_domain_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_COMPILER, "compiler", - compiler_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_LINKER, "linker", - linker_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_ASSEMBLER, "assembler", - assembler_desc, generic_nofound_msg, - string_print_fn - }, - { LB_TAG_CMOS_OPTION_TABLE, "cmos_opt_table", - cmos_opt_table_desc, nofound_msg_cmos_opt_table, - cmos_opt_table_print_fn - }, - { LB_TAG_OPTION_CHECKSUM, "option_checksum", - option_checksum_desc, nofound_msg_option_checksum, - option_checksum_print_fn - } - }; - -/* The coreboot table resides in low physical memory, which we access using - * /dev/mem. These are ranges of physical memory that should be scanned for a - * coreboot table. - */ - -#define NUM_MEM_RANGES 2 - -static const mem_range_t mem_ranges[NUM_MEM_RANGES] = - { { 0x00000000, 0x00000fff }, - { 0x000f0000, 0x000fffff } - }; - -/* This is the number of bytes of physical memory to map, starting at physical - * address 0. This value must be large enough to contain all memory ranges - * specified in mem_ranges above plus the maximum possible size of the - * coreboot table (since the start of the table could potentially occur at - * the end of the last memory range). - */ -static const size_t BYTES_TO_MAP = (1024 * 1024); - -/* Pointer to low physical memory that we access by calling mmap() on - * /dev/mem. - */ -static const void *low_phys_mem; - -/* Pointer to coreboot table. */ -static const struct lb_header *lbtable = NULL; - -/* The CMOS option table is located within the coreboot table. It tells us - * where the CMOS parameters are located in the nonvolatile RAM. - */ -static const struct cmos_option_table *cmos_table = NULL; - -static const hexdump_format_t format = - { 12, 4, " ", " | ", " ", " | ", '.', NULL }; - -/**************************************************************************** - * vtophys - * - * Convert a virtual address to a physical address. 'vaddr' is a virtual - * address in the address space of the current process. It points to - * somewhere in the chunk of memory that we mapped by calling mmap() on - * /dev/mem. This macro converts 'vaddr' to a physical address. - ****************************************************************************/ -#define vtophys(vaddr) (((unsigned long) vaddr) - \ - ((unsigned long) low_phys_mem)) - -/**************************************************************************** - * phystov - * - * Convert a physical address to a virtual address. 'paddr' is a physical - * address. This macro converts 'paddr' to a virtual address in the address - * space of the current process. The virtual to physical mapping was set up - * by calling mmap() on /dev/mem. - ****************************************************************************/ -#define phystov(paddr) (((unsigned long) low_phys_mem) + \ - ((unsigned long) paddr)) - -/**************************************************************************** - * get_lbtable - * - * Find the coreboot table and set global variable lbtable to point to it. - ****************************************************************************/ -void get_lbtable (void) - { int fd, i, bad_header_count, bad_table_count, bad_headers, bad_tables; - - if (lbtable != NULL) - return; - - /* The coreboot table is located in low physical memory, which may be - * conveniently accessed by calling mmap() on /dev/mem. - */ - - if ((fd = open("/dev/mem", O_RDONLY, 0)) < 0) - { fprintf(stderr, "%s: Can not open /dev/mem for reading: %s\n", - prog_name, strerror(errno)); - exit(1); - } - - if ((low_phys_mem = mmap(NULL, BYTES_TO_MAP, PROT_READ, MAP_SHARED, fd, 0)) - == MAP_FAILED) - { fprintf(stderr, "%s: Failed to mmap /dev/mem: %s\n", prog_name, - strerror(errno)); - exit(1); - } - - bad_header_count = 0; - bad_table_count = 0; - - for (i = 0; i < NUM_MEM_RANGES; i++) - { lbtable = lbtable_scan(phystov(mem_ranges[i].start), - phystov(mem_ranges[i].end), - &bad_headers, &bad_tables); - - if (lbtable != NULL) - return; /* success: we found it! */ - - bad_header_count += bad_headers; - bad_table_count += bad_tables; - } - - fprintf(stderr, - "%s: coreboot table not found. coreboot does not appear to\n" - " be installed on this system. Scanning for the table " - "produced the\n" - " following results:\n\n" - " %d valid signatures were found with bad header " - "checksums.\n" - " %d valid headers were found with bad table " - "checksums.\n", - prog_name, bad_header_count, bad_table_count); - exit(1); - } - -/**************************************************************************** - * get_layout_from_cmos_table - * - * Find the CMOS table which is stored within the coreboot table and set the - * global variable cmos_table to point to it. - ****************************************************************************/ -void get_layout_from_cmos_table (void) - { - - get_lbtable(); - cmos_table = (const struct cmos_option_table *) - find_lbrec(LB_TAG_CMOS_OPTION_TABLE); - - if ((cmos_table) == NULL) - { fprintf(stderr, - "%s: CMOS option table not found in coreboot table. " - "Apparently, the coreboot installed on this system was " - "built without specifying HAVE_OPTION_TABLE.\n", - prog_name); - exit(1); - } - - process_cmos_table(); - get_cmos_checksum_info(); - } - -/**************************************************************************** - * dump_lbtable - * - * Do a low-level dump of the coreboot table. - ****************************************************************************/ -void dump_lbtable (void) - { const char *p, *data; - uint32_t bytes_processed; - const struct lb_record *lbrec; - - p = ((const char *) lbtable) + lbtable->header_bytes; - printf("Coreboot table at physical address 0x%lx:\n" - " signature: 0x%x (ASCII: %c%c%c%c)\n" - " header_bytes: 0x%x (decimal: %d)\n" - " header_checksum: 0x%x (decimal: %d)\n" - " table_bytes: 0x%x (decimal: %d)\n" - " table_checksum: 0x%x (decimal: %d)\n" - " table_entries: 0x%x (decimal: %d)\n\n", - vtophys(lbtable), *((uint32_t *) lbtable->signature), - lbtable->signature[0], lbtable->signature[1],lbtable->signature[2], - lbtable->signature[3], lbtable->header_bytes, lbtable->header_bytes, - lbtable->header_checksum, lbtable->header_checksum, - lbtable->table_bytes, lbtable->table_bytes, lbtable->table_checksum, - lbtable->table_checksum, lbtable->table_entries, - lbtable->table_entries); - - if ((lbtable->table_bytes == 0) != (lbtable->table_entries == 0)) - { printf("Inconsistent values for table_bytes and table_entries!!!\n" - "They should be either both 0 or both nonzero.\n"); - return; - } - - if (lbtable->table_bytes == 0) - { printf("The coreboot table is empty!!!\n"); - return; - } - - for (bytes_processed = 0; ; ) - { lbrec = (const struct lb_record *) &p[bytes_processed]; - printf(" %s record at physical address 0x%lx:\n" - " tag: 0x%x (decimal: %d)\n" - " size: 0x%x (decimal: %d)\n" - " data:\n", - lbrec_tag_to_str(lbrec->tag), vtophys(lbrec), lbrec->tag, - lbrec->tag, lbrec->size, lbrec->size); - - data = ((const char *) lbrec) + sizeof(*lbrec); - hexdump(data, lbrec->size - sizeof(*lbrec), vtophys(data), stdout, - &format); - - bytes_processed += lbrec->size; - - if (bytes_processed >= lbtable->table_bytes) - break; - - printf("\n"); - } - } - -/**************************************************************************** - * list_lbtable_choices - * - * List names and informational blurbs for items from the coreboot table - * that may be displayed using the -l option. - ****************************************************************************/ -void list_lbtable_choices (void) - { int i; - - for (i = 0; ; ) - { printf("%s:\n%s", - lbtable_choices[i].name, lbtable_choices[i].description); - - if (++i >= NUM_LBTABLE_CHOICES) - break; - - printf("\n"); - } - } - -/**************************************************************************** - * list_lbtable_item - * - * Show the coreboot table item specified by 'item'. - ****************************************************************************/ -void list_lbtable_item (const char item[]) - { int i; - const struct lb_record *rec; - - for (i = 0; i < NUM_LBTABLE_CHOICES; i++) - { if (strcmp(item, lbtable_choices[i].name) == 0) - break; - } - - if (i == NUM_LBTABLE_CHOICES) - { fprintf(stderr, "%s: Invalid coreboot table item %s.\n", prog_name, - item); - exit(1); - } - - if ((rec = find_lbrec(lbtable_choices[i].tag)) == NULL) - { fprintf(stderr, lbtable_choices[i].nofound_msg, prog_name, - lbtable_choices[i].name); - exit(1); - } - - lbtable_choices[i].print_fn(rec); - } - -/**************************************************************************** - * lbtable_scan - * - * Scan the chunk of memory specified by 'start' and 'end' for a coreboot - * table. The first 4 bytes of the table are marked by the signature - * { 'L', 'B', 'I', 'O' }. 'start' and 'end' indicate the addresses of the - * first and last bytes of the chunk of memory to be scanned. For instance, - * values of 0x10000000 and 0x1000ffff for 'start' and 'end' specify a 64k - * chunk of memory starting at address 0x10000000. 'start' and 'end' are - * virtual addresses in the address space of the current process. They - * represent a chunk of memory obtained by calling mmap() on /dev/mem. - * - * If a coreboot table is found, return a pointer to it. Otherwise return - * NULL. On return, *bad_header_count and *bad_table_count are set as - * follows: - * - * *bad_header_count: - * Indicates the number of times in which a valid signature was found - * but the header checksum was invalid. - * - * *bad_table_count: - * Indicates the number of times in which a header with a valid - * checksum was found but the table checksum was invalid. - ****************************************************************************/ -static const struct lb_header * lbtable_scan (unsigned long start, - unsigned long end, - int *bad_header_count, - int *bad_table_count) - { static const char signature[] = { 'L', 'B', 'I', 'O' }; - const struct lb_header *table; - const uint32_t *p; - uint32_t sig; - - assert(end >= start); - sig = (*((const uint32_t *) signature)); - table = NULL; - *bad_header_count = 0; - *bad_table_count = 0; - - /* Look for signature. Table is aligned on 16-byte boundary. Therefore - * only check every fourth 32-bit memory word. As the loop is coded below, - * this function will behave in a reasonable manner for ALL possible values - * for 'start' and 'end': even weird boundary cases like 0x00000000 and - * 0xffffffff on a 32-bit architecture. - */ - for (p = (const uint32_t *) start; - (((unsigned long) p) <= end) && - ((end - (unsigned long) p) >= (sizeof(uint32_t) - 1)); - p += 4) - { if (*p != sig) - continue; - - /* We found a valid signature. */ - table = (const struct lb_header *) p; - - /* validate header checksum */ - if (compute_ip_checksum((void *) table, sizeof(*table))) - { (*bad_header_count)++; - continue; - } - - /* validate table checksum */ - if (table->table_checksum != - compute_ip_checksum(((char *) table) + sizeof(*table), - table->table_bytes)) - { (*bad_table_count)++; - continue; - } - - /* checksums are ok: we found it! */ - return table; - } - - return NULL; - } - -/**************************************************************************** - * process_cmos_table - * - * Extract layout information from the CMOS option table and store it in our - * internal repository. - ****************************************************************************/ -static void process_cmos_table (void) - { const struct cmos_enums *p; - const struct cmos_entries *q; - cmos_enum_t cmos_enum; - cmos_entry_t cmos_entry; - - /* First add the enums. */ - for (p = first_cmos_table_enum(); p != NULL; p = next_cmos_table_enum(p)) - { cmos_enum.config_id = p->config_id; - cmos_enum.value = p->value; - strncpy(cmos_enum.text, p->text, CMOS_MAX_TEXT_LENGTH); - cmos_enum.text[CMOS_MAX_TEXT_LENGTH] = '\0'; - try_add_cmos_table_enum(&cmos_enum); - } - - /* Now add the entries. We must add the entries after the enums because - * the entries are sanity checked against the enums as they are added. - */ - for (q = first_cmos_table_entry(); q != NULL; q = next_cmos_table_entry(q)) - { cmos_entry.bit = q->bit; - cmos_entry.length = q->length; - - switch (q->config) - { case 'e': - cmos_entry.config = CMOS_ENTRY_ENUM; - break; - - case 'h': - cmos_entry.config = CMOS_ENTRY_HEX; - break; - - case 'r': - cmos_entry.config = CMOS_ENTRY_RESERVED; - break; - - default: - fprintf(stderr, - "%s: Entry in CMOS option table has unknown config " - "value.\n", prog_name); - exit(1); - } - - cmos_entry.config_id = q->config_id; - strncpy(cmos_entry.name, q->name, CMOS_MAX_NAME_LENGTH); - cmos_entry.name[CMOS_MAX_NAME_LENGTH] = '\0'; - try_add_cmos_table_entry(&cmos_entry); - } - } - -/**************************************************************************** - * get_cmos_checksum_info - * - * Get layout information for CMOS checksum. - ****************************************************************************/ -static void get_cmos_checksum_info (void) - { const cmos_entry_t *e; - struct cmos_checksum *checksum; - cmos_checksum_layout_t layout; - unsigned index, index2; - - checksum = (struct cmos_checksum *) find_lbrec(LB_TAG_OPTION_CHECKSUM); - - if (checksum != NULL) - { /* We are lucky. The coreboot table hints us to the checksum. - * We might have to check the type field here though. - */ - layout.summed_area_start = checksum->range_start; - layout.summed_area_end = checksum->range_end; - layout.checksum_at = checksum->location; - try_convert_checksum_layout(&layout); - cmos_checksum_start = layout.summed_area_start; - cmos_checksum_end = layout.summed_area_end; - cmos_checksum_index = layout.checksum_at; - return; - } - - if ((e = find_cmos_entry(checksum_param_name)) == NULL) - return; - - /* If we get here, we are unlucky. The CMOS option table contains the - * location of the CMOS checksum. However, there is no information - * regarding which bytes of the CMOS area the checksum is computed over. - * Thus we have to hope our presets will be fine. - */ - - if (e->bit % 8) - { fprintf(stderr, "%s: Error: CMOS checksum is not byte-aligned.\n", - prog_name); - exit(1); - } - - index = e->bit / 8; - index2 = index + 1; /* The CMOS checksum occupies 16 bits. */ - - if (verify_cmos_byte_index(index) || verify_cmos_byte_index(index2)) - { fprintf(stderr, "%s: Error: CMOS checksum location out of range.\n", - prog_name); - exit(1); - } - - if (((index >= cmos_checksum_start) && (index <= cmos_checksum_end)) || - (((index2) >= cmos_checksum_start) && ((index2) <= cmos_checksum_end))) - { fprintf(stderr, "%s: Error: CMOS checksum overlaps checksummed area.\n", - prog_name); - exit(1); - } - - cmos_checksum_index = index; - } - -/**************************************************************************** - * try_convert_checksum_layout - * - * Perform sanity checking on CMOS checksum layout information and attempt to - * convert information from bit positions to byte positions. Return OK on - * success or an error code on failure. - ****************************************************************************/ -static void try_convert_checksum_layout (cmos_checksum_layout_t *layout) - { switch (checksum_layout_to_bytes(layout)) - { case OK: - return; - - case LAYOUT_SUMMED_AREA_START_NOT_ALIGNED: - fprintf(stderr, - "%s: CMOS checksummed area start is not byte-aligned.\n", - prog_name); - break; - - case LAYOUT_SUMMED_AREA_END_NOT_ALIGNED: - fprintf(stderr, - "%s: CMOS checksummed area end is not byte-aligned.\n", - prog_name); - break; - - case LAYOUT_CHECKSUM_LOCATION_NOT_ALIGNED: - fprintf(stderr, - "%s: CMOS checksum location is not byte-aligned.\n", - prog_name); - break; - - case LAYOUT_INVALID_SUMMED_AREA: - fprintf(stderr, - "%s: CMOS checksummed area end must be greater than " - "CMOS checksummed area start.\n", - prog_name); - break; - - case LAYOUT_CHECKSUM_OVERLAPS_SUMMED_AREA: - fprintf(stderr, - "%s: CMOS checksum overlaps checksummed area.\n", - prog_name); - break; - - case LAYOUT_SUMMED_AREA_OUT_OF_RANGE: - fprintf(stderr, - "%s: CMOS checksummed area out of range.\n", - prog_name); - break; - - case LAYOUT_CHECKSUM_LOCATION_OUT_OF_RANGE: - fprintf(stderr, - "%s: CMOS checksum location out of range.\n", - prog_name); - break; - - default: - BUG(); - } - - exit(1); - } - -/**************************************************************************** - * try_add_cmos_table_enum - * - * Attempt to add a CMOS enum to our internal repository. Exit with an error - * message on failure. - ****************************************************************************/ -static void try_add_cmos_table_enum (cmos_enum_t *cmos_enum) - { switch (add_cmos_enum(cmos_enum)) - { case OK: - return; - - case LAYOUT_DUPLICATE_ENUM: - fprintf(stderr, "%s: Duplicate enum %s found in CMOS option " - "table.\n", prog_name, cmos_enum->text); - break; - - default: - BUG(); - } - - exit(1); - } - -/**************************************************************************** - * try_add_cmos_table_entry - * - * Attempt to add a CMOS entry to our internal repository. Exit with an - * error message on failure. - ****************************************************************************/ -static void try_add_cmos_table_entry (cmos_entry_t *cmos_entry) - { const cmos_entry_t *conflict; - - switch (add_cmos_entry(cmos_entry, &conflict)) - { case OK: - return; - - case CMOS_AREA_OUT_OF_RANGE: - fprintf(stderr, - "%s: Bad CMOS option layout in CMOS option table entry " - "%s.\n", prog_name, cmos_entry->name); - break; - - case CMOS_AREA_TOO_WIDE: - fprintf(stderr, - "%s: Area too wide for CMOS option table entry %s.\n", - prog_name, cmos_entry->name); - break; - - case LAYOUT_ENTRY_OVERLAP: - fprintf(stderr, - "%s: CMOS option table entries %s and %s have overlapping " - "layouts.\n", prog_name, cmos_entry->name, conflict->name); - break; - - case LAYOUT_ENTRY_BAD_LENGTH: - /* Silently ignore entries with zero length. Although this should - * never happen in practice, we should handle the case in a - * reasonable manner just to be safe. - */ - return; - - default: - BUG(); - } - - exit(1); - } - -/**************************************************************************** - * find_lbrec - * - * Find the record in the coreboot table that matches 'tag'. Return pointer - * to record on success or NULL if record not found. - ****************************************************************************/ -static const struct lb_record * find_lbrec (uint32_t tag) - { const char *p; - uint32_t bytes_processed; - const struct lb_record *lbrec; - - p = ((const char *) lbtable) + lbtable->header_bytes; - - for (bytes_processed = 0; - bytes_processed < lbtable->table_bytes; - bytes_processed += lbrec->size) - { lbrec = (const struct lb_record *) &p[bytes_processed]; - - if (lbrec->tag == tag) - return lbrec; - } - - return NULL; - } - -/**************************************************************************** - * lbrec_tag_to_str - * - * Return a pointer to the string representation of the given coreboot table - * tag. - ****************************************************************************/ -static const char * lbrec_tag_to_str (uint32_t tag) - { switch (tag) - { case LB_TAG_UNUSED: - return "UNUSED"; - - case LB_TAG_MEMORY: - return "MEMORY"; - - case LB_TAG_HWRPB: - return "HWRPB"; - - case LB_TAG_MAINBOARD: - return "MAINBOARD"; - - case LB_TAG_VERSION: - return "VERSION"; - - case LB_TAG_EXTRA_VERSION: - return "EXTRA_VERSION"; - - case LB_TAG_BUILD: - return "BUILD"; - - case LB_TAG_COMPILE_TIME: - return "COMPILE_TIME"; - - case LB_TAG_COMPILE_BY: - return "COMPILE_BY"; - - case LB_TAG_COMPILE_HOST: - return "COMPILE_HOST"; - - case LB_TAG_COMPILE_DOMAIN: - return "COMPILE_DOMAIN"; - - case LB_TAG_COMPILER: - return "COMPILER"; - - case LB_TAG_LINKER: - return "LINKER"; - - case LB_TAG_ASSEMBLER: - return "ASSEMBLER"; - - case LB_TAG_CMOS_OPTION_TABLE: - return "CMOS_OPTION_TABLE"; - - case LB_TAG_OPTION_CHECKSUM: - return "OPTION_CHECKSUM"; - - default: - break; - } - - return "UNKNOWN"; - } - -/**************************************************************************** - * first_cmos_table_entry - * - * Return a pointer to the first entry in the CMOS table that represents a - * CMOS parameter. Return NULL if CMOS table is empty. - ****************************************************************************/ -static const struct cmos_entries * first_cmos_table_entry (void) - { return (const struct cmos_entries *) first_cmos_rec(LB_TAG_OPTION); } - -/**************************************************************************** - * next_cmos_table_entry - * - * Return a pointer to the next entry after 'last' in the CMOS table that - * represents a CMOS parameter. Return NULL if there are no more parameters. - ****************************************************************************/ -static const struct cmos_entries * - next_cmos_table_entry (const struct cmos_entries *last) - { return (const struct cmos_entries *) - next_cmos_rec((const struct lb_record *) last, LB_TAG_OPTION); - } - -/**************************************************************************** - * first_cmos_table_enum - * - * Return a pointer to the first entry in the CMOS table that represents a - * possible CMOS parameter value. Return NULL if the table does not contain - * any such entries. - ****************************************************************************/ -static const struct cmos_enums * first_cmos_table_enum (void) - { return (const struct cmos_enums *) first_cmos_rec(LB_TAG_OPTION_ENUM); } - -/**************************************************************************** - * next_cmos_table_enum - * - * Return a pointer to the next entry after 'last' in the CMOS table that - * represents a possible CMOS parameter value. Return NULL if there are no - * more parameter values. - ****************************************************************************/ -static const struct cmos_enums * next_cmos_table_enum - (const struct cmos_enums *last) - { return (const struct cmos_enums *) - next_cmos_rec((const struct lb_record *) last, LB_TAG_OPTION_ENUM); - } - -/**************************************************************************** - * first_cmos_rec - * - * Return a pointer to the first entry in the CMOS table whose type matches - * 'tag'. Return NULL if CMOS table contains no such entry. - * - * Possible values for 'tag' are as follows: - * - * LB_TAG_OPTION: The entry represents a CMOS parameter. - * LB_TAG_OPTION_ENUM: The entry represents a possible value for a CMOS - * parameter of type 'enum'. - * - * The CMOS table tells us where in the nonvolatile RAM to look for CMOS - * parameter values and specifies their types as 'enum', 'hex', or - * 'reserved'. - ****************************************************************************/ -static const struct lb_record * first_cmos_rec (uint32_t tag) - { const char *p; - uint32_t bytes_processed, bytes_for_entries; - const struct lb_record *lbrec; - - p = ((const char *) cmos_table) + cmos_table->header_length; - bytes_for_entries = cmos_table->size - cmos_table->header_length; - - for (bytes_processed = 0; - bytes_processed < bytes_for_entries; - bytes_processed += lbrec->size) - { lbrec = (const struct lb_record *) &p[bytes_processed]; - - if (lbrec->tag == tag) - return lbrec; - } - - return NULL; - } - -/**************************************************************************** - * next_cmos_rec - * - * Return a pointer to the next entry after 'last' in the CMOS table whose - * type matches 'tag'. Return NULL if the table contains no more entries of - * this type. - ****************************************************************************/ -static const struct lb_record * next_cmos_rec (const struct lb_record *last, - uint32_t tag) - { const char *p; - uint32_t bytes_processed, bytes_for_entries, last_offset; - const struct lb_record *lbrec; - - p = ((const char *) cmos_table) + cmos_table->header_length; - bytes_for_entries = cmos_table->size - cmos_table->header_length; - last_offset = ((const char *) last) - p; - - for (bytes_processed = last_offset + last->size; - bytes_processed < bytes_for_entries; - bytes_processed += lbrec->size) - { lbrec = (const struct lb_record *) &p[bytes_processed]; - - if (lbrec->tag == tag) - return lbrec; - } - - return NULL; - } - -/**************************************************************************** - * memory_print_fn - * - * Display function for 'memory' item of coreboot table. - ****************************************************************************/ -static void memory_print_fn (const struct lb_record *rec) - { char start_str[19], end_str[19], size_str[19]; - const struct lb_memory *p; - const char *mem_type; - const struct lb_memory_range *ranges; - uint64_t size, start, end; - int i, entries; - - p = (const struct lb_memory *) rec; - entries = (p->size - sizeof(*p)) / sizeof(p->map[0]); - ranges = p->map; - - if (entries == 0) - { printf("No memory ranges were found.\n"); - return; - } - - for (i = 0; ; ) - { switch (ranges[i].type) - { case LB_MEM_RAM: - mem_type = "AVAILABLE"; - break; - - case LB_MEM_RESERVED: - mem_type = "RESERVED"; - break; - - case LB_MEM_TABLE: - mem_type = "CONFIG_TABLE"; - break; - - default: - mem_type = "UNKNOWN"; - break; - } - - size = unpack_lb64(ranges[i].size); - start = unpack_lb64(ranges[i].start); - end = start + size - 1; - uint64_to_hex_string(start_str, start); - uint64_to_hex_string(end_str, end); - uint64_to_hex_string(size_str, size); - printf("%s memory:\n" - " from physical addresses %s to %s\n" - " size is %s bytes (%lld in decimal)\n", - mem_type, start_str, end_str, size_str, - (unsigned long long) size); - - if (++i >= entries) - break; - - printf("\n"); - } - } - -/**************************************************************************** - * mainboard_print_fn - * - * Display function for 'mainboard' item of coreboot table. - ****************************************************************************/ -static void mainboard_print_fn (const struct lb_record *rec) - { const struct lb_mainboard *p; - - p = (const struct lb_mainboard *) rec; - printf("Vendor: %s\n" - "Part number: %s\n", - &p->strings[p->vendor_idx], - &p->strings[p->part_number_idx]); - } - -/**************************************************************************** - * cmos_opt_table_print_fn - * - * Display function for 'cmos_opt_table' item of coreboot table. - ****************************************************************************/ -static void cmos_opt_table_print_fn (const struct lb_record *rec) - { - const struct cmos_option_table *p; - const struct lb_record *cmos_item; - uint32_t bytes_processed, bytes_for_entries; - const char *q; - - p = (const struct cmos_option_table *) rec; - q = ((const char *) p) + p->header_length; - bytes_for_entries = p->size - p->header_length; - - printf("CMOS option table at physical address 0x%lx:\n" - " tag: 0x%x (decimal: %d)\n" - " size: 0x%x (decimal: %d)\n" - " header_length: 0x%x (decimal: %d)\n\n", - vtophys(p), p->tag, p->tag, p->size, p->size, p->header_length, - p->header_length); - - if (p->header_length > p->size) - { printf("Header length for CMOS option table is greater than the size " - "of the entire table including header!!!\n"); - return; - } - - if (bytes_for_entries == 0) - { printf("The CMOS option table is empty!!!\n"); - return; - } - - for (bytes_processed = 0; ; ) - { cmos_item = (const struct lb_record *) &q[bytes_processed]; - - switch (cmos_item->tag) - { case LB_TAG_OPTION: - print_option_record((const struct cmos_entries *) cmos_item); - break; - - case LB_TAG_OPTION_ENUM: - print_enum_record((const struct cmos_enums *) cmos_item); - break; - - case LB_TAG_OPTION_DEFAULTS: - print_defaults_record((const struct cmos_defaults *) cmos_item); - break; - - default: - print_unknown_record(cmos_item); - break; - } - - bytes_processed += cmos_item->size; - - if (bytes_processed >= bytes_for_entries) - break; - - printf("\n"); - } - } - -/**************************************************************************** - * print_option_record - * - * Display "option" record from CMOS option table. - ****************************************************************************/ -static void print_option_record (const struct cmos_entries *cmos_entry) - { static const size_t S_BUFSIZE = 80; - char s[S_BUFSIZE]; - - switch (cmos_entry->config) - { case 'e': - strcpy(s, "ENUM"); - break; - - case 'h': - strcpy(s, "HEX"); - break; - - case 'r': - strcpy(s, "RESERVED"); - break; - - default: - snprintf(s, S_BUFSIZE, "UNKNOWN: value is 0x%x (decimal: %d)", - cmos_entry->config, cmos_entry->config); - break; - } - - printf(" OPTION record at physical address 0x%lx:\n" - " tag: 0x%x (decimal: %d)\n" - " size: 0x%x (decimal: %d)\n" - " bit: 0x%x (decimal: %d)\n" - " length: 0x%x (decimal: %d)\n" - " config: %s\n" - " config_id: 0x%x (decimal: %d)\n" - " name: %s\n", - vtophys(cmos_entry), cmos_entry->tag, cmos_entry->tag, - cmos_entry->size, cmos_entry->size, cmos_entry->bit, - cmos_entry->bit, cmos_entry->length, cmos_entry->length, s, - cmos_entry->config_id, cmos_entry->config_id, cmos_entry->name); - } - -/**************************************************************************** - * print_enum_record - * - * Display "enum" record from CMOS option table. - ****************************************************************************/ -static void print_enum_record (const struct cmos_enums *cmos_enum) - { printf(" ENUM record at physical address 0x%lx:\n" - " tag: 0x%x (decimal: %d)\n" - " size: 0x%x (decimal: %d)\n" - " config_id: 0x%x (decimal: %d)\n" - " value: 0x%x (decimal: %d)\n" - " text: %s\n", - vtophys(cmos_enum), cmos_enum->tag, cmos_enum->tag, cmos_enum->size, - cmos_enum->size, cmos_enum->config_id, cmos_enum->config_id, - cmos_enum->value, cmos_enum->value, cmos_enum->text); - } - -/**************************************************************************** - * print_defaults_record - * - * Display "defaults" record from CMOS option table. - ****************************************************************************/ -static void print_defaults_record (const struct cmos_defaults *cmos_defaults) - { printf(" DEFAULTS record at physical address 0x%lx:\n" - " tag: 0x%x (decimal: %d)\n" - " size: 0x%x (decimal: %d)\n" - " name_length: 0x%x (decimal: %d)\n" - " name: %s\n" - " default_set:\n", - vtophys(cmos_defaults), cmos_defaults->tag, cmos_defaults->tag, - cmos_defaults->size, cmos_defaults->size, - cmos_defaults->name_length, cmos_defaults->name_length, - cmos_defaults->name); - hexdump(cmos_defaults->default_set, CMOS_IMAGE_BUFFER_SIZE, - vtophys(cmos_defaults->default_set), stdout, &format); - } - -/**************************************************************************** - * print_unknown_record - * - * Display record of unknown type from CMOS option table. - ****************************************************************************/ -static void print_unknown_record (const struct lb_record *cmos_item) - { const char *data; - - printf(" UNKNOWN record at physical address 0x%lx:\n" - " tag: 0x%x (decimal: %d)\n" - " size: 0x%x (decimal: %d)\n" - " data:\n", - vtophys(cmos_item), cmos_item->tag, cmos_item->tag, - cmos_item->size, cmos_item->size); - data = ((const char *) cmos_item) + sizeof(*cmos_item); - hexdump(data, cmos_item->size - sizeof(*cmos_item), vtophys(data), stdout, - &format); - } - -/**************************************************************************** - * option_checksum_print_fn - * - * Display function for 'option_checksum' item of coreboot table. - ****************************************************************************/ -static void option_checksum_print_fn (const struct lb_record *rec) - { struct cmos_checksum *p; - - p = (struct cmos_checksum *) rec; - printf("CMOS checksum from bit %d to bit %d\n" - "at position %d is type %s.\n", - p->range_start, p->range_end, p->location, - (p->type == CHECKSUM_PCBIOS) ? "PC BIOS" : "NONE"); - } - -/**************************************************************************** - * string_print_fn - * - * Display function for a generic item of coreboot table that simply - * consists of a string. - ****************************************************************************/ -static void string_print_fn (const struct lb_record *rec) - { const struct lb_string *p; - - p = (const struct lb_string *) rec; - printf("%s\n", p->string); - } - -/**************************************************************************** - * uint64_to_hex_string - * - * Convert the 64-bit integer 'n' to its hexadecimal string representation, - * storing the result in 's'. 's' must point to a buffer at least 19 bytes - * long. The result is displayed with as many leading zeros as needed to - * make a 16-digit hex number including a 0x prefix (example: the number 1 - * will be displayed as "0x0000000000000001"). - ****************************************************************************/ -static void uint64_to_hex_string (char str[], uint64_t n) - { int chars_printed; - - str[0] = '0'; - str[1] = 'x'; - - /* Print the result right-justified with leading spaces in a - * 16-character field. */ - chars_printed = sprintf(&str[2], "%016llx", (unsigned long long) n); - assert(chars_printed == 16); - } |