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| author | Edward O'Callaghan <quasisec@google.com> | 2020-04-29 14:05:52 +1000 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2020-04-29 05:41:07 +0000 |
| commit | 10757897c0714d3c7c1f4b5d67b64a7e92a5cc9e (patch) | |
| tree | e6e5cb77942973de76da1c0c6c4de600fd36c980 | |
| parent | 466732262817aadb1d9464883912112fd5d03fba (diff) | |
| download | coreboot-10757897c0714d3c7c1f4b5d67b64a7e92a5cc9e.tar.xz | |
mb/google/hatch/romstage_spd_smbus.c: Fix missing DIMM issue
Since `commit 0ee9b14c09c` the SPD array is set to NULL if no
DIMM is present. This causes failure due to an unconditional use
of `blk.spd_array[i]`, : i={0,1}.
This validates the spd_array is non-NULL before use otherwise it
sets the DIMM as not present.
Puff fails boot with the following log:
```
...
SPD: banks 16, ranks 2, rows 16, columns 10, density 8192 Mb
SPD: device width 8 bits, bus width 64 bits
SPD: module size is 16384 MB (per channel)
ASSERTION ERROR: file 'src/soc/intel/cannonlake/cnl_memcfg_init.c', line 47
```
BUG=b:155220125
BRANCH=none
TEST=none
Change-Id: I5f47c849344951d53fa8c67e779b7c46d632d124
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40820
Reviewed-by: Jamie Chen <jamie.chen@intel.com>
Reviewed-by: Sam McNally <sammc@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Daniel Kurtz <djkurtz@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/mainboard/google/hatch/romstage_spd_smbus.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/src/mainboard/google/hatch/romstage_spd_smbus.c b/src/mainboard/google/hatch/romstage_spd_smbus.c index 4aa37fa6a4..bac5d588ea 100644 --- a/src/mainboard/google/hatch/romstage_spd_smbus.c +++ b/src/mainboard/google/hatch/romstage_spd_smbus.c @@ -18,15 +18,24 @@ void mainboard_memory_init_params(FSPM_UPD *memupd) /* Access memory info through SMBUS. */ get_spd_smbus(&blk); - memcfg.spd[0].read_type = READ_SPD_MEMPTR; - memcfg.spd[0].spd_spec.spd_data_ptr_info.spd_data_len = blk.len; - memcfg.spd[0].spd_spec.spd_data_ptr_info.spd_data_ptr = (uintptr_t)blk.spd_array[0]; + + if (blk.spd_array[0] == NULL) { + memcfg.spd[0].read_type = NOT_EXISTING; + } else { + memcfg.spd[0].read_type = READ_SPD_MEMPTR; + memcfg.spd[0].spd_spec.spd_data_ptr_info.spd_data_len = blk.len; + memcfg.spd[0].spd_spec.spd_data_ptr_info.spd_data_ptr = (uintptr_t)blk.spd_array[0]; + } memcfg.spd[1].read_type = NOT_EXISTING; - memcfg.spd[2].read_type = READ_SPD_MEMPTR; - memcfg.spd[2].spd_spec.spd_data_ptr_info.spd_data_len = blk.len; - memcfg.spd[2].spd_spec.spd_data_ptr_info.spd_data_ptr = (uintptr_t)blk.spd_array[1]; + if (blk.spd_array[1] == NULL) { + memcfg.spd[2].read_type = NOT_EXISTING; + } else { + memcfg.spd[2].read_type = READ_SPD_MEMPTR; + memcfg.spd[2].spd_spec.spd_data_ptr_info.spd_data_len = blk.len; + memcfg.spd[2].spd_spec.spd_data_ptr_info.spd_data_ptr = (uintptr_t)blk.spd_array[1]; + } memcfg.spd[3].read_type = NOT_EXISTING; dump_spd_info(&blk); |