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-rw-r--r--util/lbtdump/lbtdump.c55
1 files changed, 50 insertions, 5 deletions
diff --git a/util/lbtdump/lbtdump.c b/util/lbtdump/lbtdump.c
index 82ea06c024..c5e4f281b7 100644
--- a/util/lbtdump/lbtdump.c
+++ b/util/lbtdump/lbtdump.c
@@ -9,7 +9,7 @@
#include <sys/mman.h>
#include "../../src/include/boot/coreboot_tables.h"
-void print_lb_records(struct lb_record *rec, struct lb_record *last, unsigned long addr);
+uint64_t print_lb_records(struct lb_record *rec, struct lb_record *last, unsigned long addr);
unsigned long compute_checksum(void *addr, unsigned long length)
{
@@ -239,6 +239,14 @@ void print_option_checksum(struct lb_record *ptr, unsigned long addr)
rec->range_start, rec->range_end, rec->location, rec->type);
}
+void print_forward(struct lb_record *ptr, unsigned long addr)
+{
+ struct lb_forward *rec;
+ rec = (struct lb_forward *)ptr;
+ printf("forward %d, rec len %d, forward: 0x%llx\n",
+ rec->tag, rec->size, (unsigned long long) rec->forward);
+}
+
struct {
uint32_t type;
char *type_name;
@@ -263,6 +271,7 @@ struct {
{ LB_TAG_OPTION_ENUM, "Option Enumeration", print_option_enumeration },
{ LB_TAG_OPTION_DEFAULTS, "Option Defaults", nop_print },
{ LB_TAG_OPTION_CHECKSUM, "Option Checksum", print_option_checksum },
+ { LB_TAG_FORWARD, "Forward link", print_forward },
{ -1, "Unknown", 0 }
};
@@ -271,12 +280,13 @@ static struct lb_record *next_record(struct lb_record *rec)
return (struct lb_record *)(((char *)rec) + rec->size);
}
-void print_lb_records(struct lb_record *rec, struct lb_record *last,
+uint64_t print_lb_records(struct lb_record *rec, struct lb_record *last,
unsigned long addr)
{
struct lb_record *next;
int i;
int count;
+ uint64_t forward = 0;
count = 0;
for(next = next_record(rec); (rec < last) && (next <= last);
@@ -293,12 +303,43 @@ void print_lb_records(struct lb_record *rec, struct lb_record *last,
if (lb_types[i].print) {
lb_types[i].print(rec, addr);
}
+ if (rec->tag == LB_TAG_FORWARD)
+ forward = ((struct lb_forward *) rec)->forward;
}
+ return forward;
}
-void print_lb_table(struct lb_header *head, unsigned long addr)
+static void *do_map(int fd, uint64_t addr, uint32_t len, void **mpaddr_out, size_t *mplen)
+{
+ uint64_t mpaddr, mpaddrend;
+ uint8_t *ret;
+ mpaddrend = (addr + len + 4095) & ~4095ULL;
+ mpaddr = addr & ~4095ULL;
+ ret = mmap(0, mpaddrend - mpaddr, PROT_READ, MAP_SHARED, fd, mpaddr);
+ if (ret == ((void *) -1)) {
+ fprintf(stderr, "Can not mmap /dev/mem at %08lx-%08lx errno(%d):%s\n",
+ mpaddr, mpaddrend, errno, strerror(errno));
+ exit(-2);
+ }
+ *mpaddr_out = ret;
+ *mplen = mpaddrend - mpaddr;
+ return ret + addr - mpaddr;
+}
+
+uint64_t print_lb_table(int fd, uint64_t addr)
{
struct lb_record *rec, *last;
+ struct lb_header *head;
+ void *mp;
+ size_t mplen;
+ uint32_t bytes;
+ uint64_t forward;
+
+ head = do_map(fd, addr, sizeof (*head), &mp, &mplen);
+ bytes = head->table_bytes;
+ munmap (mp, mplen);
+
+ head = do_map(fd, addr, bytes, &mp, &mplen);
rec = (struct lb_record *)(((char *)head) + head->header_bytes);
last = (struct lb_record *)(((char *)rec) + head->table_bytes);
@@ -306,7 +347,9 @@ void print_lb_table(struct lb_header *head, unsigned long addr)
printf("Coreboot header(%d) checksum: %04x table(%d) checksum: %04x entries: %d\n",
head->header_bytes, head->header_checksum,
head->table_bytes, head->table_checksum, head->table_entries);
- print_lb_records(rec, last, addr + head->header_bytes);
+ forward = print_lb_records(rec, last, addr + head->header_bytes);
+ munmap (mp, mplen);
+ return forward;
}
int main(int argc, char **argv)
@@ -333,7 +376,9 @@ int main(int argc, char **argv)
if (lb_table) {
unsigned long addr;
addr = ((char *)lb_table) - ((char *)low_1MB);
- print_lb_table(lb_table, addr);
+
+ while (addr)
+ addr = print_lb_table(fd, addr);
}
else {
printf("lb_table not found\n");