diff options
| author | Jacob Garber <jgarber1@ualberta.ca> | 2019-05-29 14:29:45 -0600 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-08-20 15:18:10 +0000 |
| commit | 8216b46d7b9b88be4e31660362c4b9077670fd33 (patch) | |
| tree | 95b46818db052de8fa5224ff2919b2e16ed7797f /src/mainboard/intel/saddlebrook/spd | |
| parent | ed316bc39cfb1f6dffcc76a245580b43ad5d0225 (diff) | |
mb/{asrock,intel,purism}: Copy channel arrays separately
DqByteMapCh0 and DqByteMapCh1 are declared adjacently in the
FSP_M_CONFIG struct, so it is tempting to begin memcpy at the address of
the first array and overwrite both of them at once. However, FSP_M_CONFIG
is not declared with the packed attribute, so this is not guaranteed to
work and is undefined behaviour to boot. It is cleaner and less tricky
to copy them independently. The same is true for DqsMapCpu2DramCh0 and
DqsMapCpu2DramCh1, so we change those as well.
Change-Id: Ic6bb2bd5773af24329575926dbc70e0211f29051
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 136538{8,9}, 140134{1,4}
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33135
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/intel/saddlebrook/spd')
| -rw-r--r-- | src/mainboard/intel/saddlebrook/spd/spd.h | 4 | ||||
| -rw-r--r-- | src/mainboard/intel/saddlebrook/spd/spd_util.c | 10 |
2 files changed, 8 insertions, 6 deletions
diff --git a/src/mainboard/intel/saddlebrook/spd/spd.h b/src/mainboard/intel/saddlebrook/spd/spd.h index a5f1af3a77..70a1f68ce8 100644 --- a/src/mainboard/intel/saddlebrook/spd/spd.h +++ b/src/mainboard/intel/saddlebrook/spd/spd.h @@ -19,8 +19,8 @@ #define RCOMP_TARGET_PARAMS 0x5 -void mainboard_fill_dq_map_data(void *dq_map_ptr); -void mainboard_fill_dqs_map_data(void *dqs_map_ptr); +void mainboard_fill_dq_map_data(void *dq_map_ch0, void *dq_map_ch1); +void mainboard_fill_dqs_map_data(void *dqs_map_ch0, void *dqs_map_ch1); void mainboard_fill_rcomp_res_data(void *rcomp_ptr); void mainboard_fill_rcomp_strength_data(void *rcomp_strength_ptr); diff --git a/src/mainboard/intel/saddlebrook/spd/spd_util.c b/src/mainboard/intel/saddlebrook/spd/spd_util.c index 5055d9a3af..a09cebcf4e 100644 --- a/src/mainboard/intel/saddlebrook/spd/spd_util.c +++ b/src/mainboard/intel/saddlebrook/spd/spd_util.c @@ -17,7 +17,7 @@ #include <string.h> #include "spd.h" -void mainboard_fill_dq_map_data(void *dq_map_ptr) +void mainboard_fill_dq_map_data(void *dq_map_ch0, void *dq_map_ch1) { /* DQ byte map */ const u8 dq_map[2][12] = { @@ -25,16 +25,18 @@ void mainboard_fill_dq_map_data(void *dq_map_ptr) 0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 }, { 0x33, 0xCC, 0x00, 0xCC, 0x33, 0xCC, 0x33, 0x00, 0xFF, 0x00, 0xFF, 0x00 } }; - memcpy(dq_map_ptr, dq_map, sizeof(dq_map)); + memcpy(dq_map_ch0, dq_map[0], sizeof(dq_map[0])); + memcpy(dq_map_ch1, dq_map[1], sizeof(dq_map[1])); } -void mainboard_fill_dqs_map_data(void *dqs_map_ptr) +void mainboard_fill_dqs_map_data(void *dqs_map_ch0, void *dqs_map_ch1) { /* DQS CPU<>DRAM map */ const u8 dqs_map[2][8] = { { 0, 1, 3, 2, 4, 5, 6, 7 }, { 1, 0, 4, 5, 2, 3, 6, 7 } }; - memcpy(dqs_map_ptr, dqs_map, sizeof(dqs_map)); + memcpy(dqs_map_ch0, dqs_map[0], sizeof(dqs_map[0])); + memcpy(dqs_map_ch1, dqs_map[1], sizeof(dqs_map[1])); } void mainboard_fill_rcomp_res_data(void *rcomp_ptr) |