diff options
Diffstat (limited to 'util/cbmem/cbmem.c')
| -rw-r--r-- | util/cbmem/cbmem.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/util/cbmem/cbmem.c b/util/cbmem/cbmem.c index 74e0fd4afd..e05a72aed9 100644 --- a/util/cbmem/cbmem.c +++ b/util/cbmem/cbmem.c @@ -22,6 +22,7 @@ #include <stdlib.h> #include <string.h> #include <unistd.h> +#include <inttypes.h> #include <getopt.h> #include <errno.h> #include <fcntl.h> @@ -128,6 +129,25 @@ static struct lb_cbmem_ref timestamps; static struct lb_cbmem_ref console; static struct lb_memory_range cbmem; +/* This is a work-around for a nasty problem introduced by initially having + * pointer sized entries in the lb_cbmem_ref structures. This caused problems + * on 64bit x86 systems because coreboot is 32bit on those systems. + * When the problem was found, it was corrected, but there are a lot of + * systems out there with a firmware that does not produce the right + * lb_cbmem_ref structure. Hence we try to autocorrect this issue here. + */ +static struct lb_cbmem_ref parse_cbmem_ref(struct lb_cbmem_ref *cbmem_ref) +{ + struct lb_cbmem_ref ret; + + ret = *cbmem_ref; + + if (cbmem_ref->size < sizeof(*cbmem_ref)) + ret.cbmem_addr = (uint32_t)ret.cbmem_addr; + + return ret; +} + static int parse_cbtable(u64 address) { int i, found = 0; @@ -184,12 +204,12 @@ static int parse_cbtable(u64 address) } case LB_TAG_TIMESTAMPS: { debug(" Found timestamp table.\n"); - timestamps = *(struct lb_cbmem_ref *) lbr_p; + timestamps = parse_cbmem_ref((struct lb_cbmem_ref *) lbr_p); continue; } case LB_TAG_CBMEM_CONSOLE: { debug(" Found cbmem console.\n"); - console = *(struct lb_cbmem_ref *) lbr_p; + console = parse_cbmem_ref((struct lb_cbmem_ref *) lbr_p); continue; } case LB_TAG_FORWARD: { |