diff options
Diffstat (limited to 'util/cbmem/cbmem.c')
| -rw-r--r-- | util/cbmem/cbmem.c | 53 |
1 files changed, 33 insertions, 20 deletions
diff --git a/util/cbmem/cbmem.c b/util/cbmem/cbmem.c index aa9fa13592..4314d3077f 100644 --- a/util/cbmem/cbmem.c +++ b/util/cbmem/cbmem.c @@ -180,13 +180,14 @@ static struct lb_cbmem_ref parse_cbmem_ref(struct lb_cbmem_ref *cbmem_ref) return ret; } -static int parse_cbtable(u64 address) +static int parse_cbtable(u64 address, size_t table_size) { int i, found = 0; void *buf; - debug("Looking for coreboot table at %" PRIx64 "\n", address); - buf = map_memory(address); + debug("Looking for coreboot table at %" PRIx64 " %zd bytes.\n", + address, table_size); + buf = map_memory_size(address, table_size); /* look at every 16 bytes within 4K of the base */ @@ -252,7 +253,7 @@ static int parse_cbtable(u64 address) *(struct lb_forward *) lbr_p; debug(" Found forwarding entry.\n"); unmap_memory(); - return parse_cbtable(lbf_p.forward); + return parse_cbtable(lbf_p.forward, table_size); } default: break; @@ -434,16 +435,22 @@ static void dump_timestamps(void) { int i; struct timestamp_table *tst_p; + size_t size; if (timestamps.tag != LB_TAG_TIMESTAMPS) { fprintf(stderr, "No timestamps found in coreboot table.\n"); return; } - tst_p = (struct timestamp_table *) - map_memory((unsigned long)timestamps.cbmem_addr); + size = sizeof(*tst_p); + tst_p = map_memory_size((unsigned long)timestamps.cbmem_addr, size); printf("%d entries total:\n\n", tst_p->num_entries); + size += tst_p->num_entries * sizeof(tst_p->entries[0]); + + unmap_memory(); + tst_p = map_memory_size((unsigned long)timestamps.cbmem_addr, size); + for (i = 0; i < tst_p->num_entries; i++) { const struct timestamp_entry *tse_p = tst_p->entries + i; timestamp_print_entry(tse_p->entry_id, tse_p->entry_stamp, @@ -466,7 +473,8 @@ static void dump_console(void) return; } - console_p = map_memory((unsigned long)console.cbmem_addr); + console_p = map_memory_size((unsigned long)console.cbmem_addr, + 2 * sizeof(uint32_t)); /* The in-memory format of the console area is: * u32 size * u32 cursor @@ -481,6 +489,7 @@ static void dump_console(void) if (size > cursor) size = cursor; console_c = malloc(size + 1); + unmap_memory(); if (!console_c) { fprintf(stderr, "Not enough memory for console.\n"); exit(1); @@ -508,7 +517,7 @@ static void hexdump(unsigned long memory, int length) uint8_t *m; int all_zero = 0; - m = map_memory((intptr_t)memory); + m = map_memory_size((intptr_t)memory, length); if (length > MAP_BYTES) { printf("Truncating hex dump from %d to %d bytes\n\n", @@ -658,7 +667,7 @@ static void dump_cbmem_toc(void) start = unpack_lb64(cbmem.start); - cbmem_area = map_memory(start); + cbmem_area = map_memory_size(start, unpack_lb64(cbmem.size)); entries = (struct cbmem_entry *)cbmem_area; if (entries[0].magic == CBMEM_MAGIC) { @@ -671,16 +680,12 @@ static void dump_cbmem_toc(void) rootptr -= sizeof(struct cbmem_root_pointer); unmap_memory(); struct cbmem_root_pointer *r = - (struct cbmem_root_pointer *)map_memory(rootptr); + map_memory_size(rootptr, sizeof(*r)); if (r->magic == CBMEM_POINTER_MAGIC) { struct cbmem_root *root; uint64_t rootaddr = r->root; unmap_memory(); - /* Note that this only works because our default mmap - * size is 1MiB which happens to be larger than the - * root entry size which is default to be 4KiB. - */ - root = (struct cbmem_root *)map_memory(rootaddr); + root = map_memory_size(rootaddr, ROOT_MIN_SIZE); dump_dynamic_cbmem_toc(root); } else fprintf(stderr, "No valid coreboot CBMEM root pointer found.\n"); @@ -1036,8 +1041,9 @@ int main(int argc, char** argv) } int i; - u8 *baseaddr_buffer = alloca(addr_cells * 4); - if (read(fd, baseaddr_buffer, addr_cells * 4) < 0) { + size_t size_to_read = addr_cells * 4 + size_cells * 4; + u8 *dtbuffer = alloca(size_to_read); + if (read(fd, dtbuffer, size_to_read) < 0) { perror(reg); return 1; } @@ -1047,17 +1053,24 @@ int main(int argc, char** argv) u64 baseaddr = 0; for (i = 0; i < addr_cells * 4; i++) { baseaddr <<= 8; - baseaddr |= baseaddr_buffer[i]; + baseaddr |= *dtbuffer; + dtbuffer++; + } + u64 cb_table_size = 0; + for (i = 0; i < size_cells * 4; i++) { + cb_table_size <<= 8; + cb_table_size |= *dtbuffer; + dtbuffer++; } - parse_cbtable(baseaddr); + parse_cbtable(baseaddr, cb_table_size); #else int j; static const int possible_base_addresses[] = { 0, 0xf0000 }; /* Find and parse coreboot table */ for (j = 0; j < ARRAY_SIZE(possible_base_addresses); j++) { - if (parse_cbtable(possible_base_addresses[j])) + if (parse_cbtable(possible_base_addresses[j], MAP_BYTES)) break; } #endif |