diff options
| -rw-r--r-- | core/opal-dump.c | 61 | ||||
| -rw-r--r-- | include/opal-api.h | 20 |
2 files changed, 81 insertions, 0 deletions
diff --git a/core/opal-dump.c b/core/opal-dump.c index bb90c45..15f8214 100644 --- a/core/opal-dump.c +++ b/core/opal-dump.c @@ -41,6 +41,10 @@ static struct spira_ntuple *ntuple_mdrt; static struct mpipl_metadata *mpipl_metadata; +/* Dump metadata area */ +static struct opal_mpipl_fadump *opal_mpipl_data; + + static int opal_mpipl_add_entry(u8 region, u64 src, u64 dest, u64 size) { int i, max_cnt; @@ -329,6 +333,60 @@ static int64_t opal_mpipl_register_tag(enum opal_mpipl_tags tag, return rc; } +static void post_mpipl_get_opal_data(void) +{ + struct mdrt_table *mdrt = (void *)(MDRT_TABLE_BASE); + int i, j = 0, count = 0; + u32 mdrt_cnt = ntuple_mdrt->act_cnt; + struct opal_mpipl_region *region; + + /* Count OPAL dump regions */ + for (i = 0; i < mdrt_cnt; i++) { + if (mdrt->data_region == DUMP_REGION_OPAL_MEMORY) + count++; + mdrt++; + } + + if (count == 0) { + prlog(PR_INFO, "OPAL dump is not available\n"); + return; + } + + opal_mpipl_data = zalloc(sizeof(struct opal_mpipl_fadump) + + count * sizeof(struct opal_mpipl_region)); + if (!opal_mpipl_data) { + prlog(PR_ERR, "Failed to allocate memory\n"); + return; + } + + /* Fill OPAL dump details */ + opal_mpipl_data->version = OPAL_MPIPL_VERSION; + opal_mpipl_data->crashing_pir = mpipl_metadata->crashing_pir; + opal_mpipl_data->region_cnt = count; + region = opal_mpipl_data->region; + + mdrt = (void *)(MDRT_TABLE_BASE); + for (i = 0; i < mdrt_cnt; i++) { + if (mdrt->data_region != DUMP_REGION_OPAL_MEMORY) { + mdrt++; + continue; + } + + region[j].src = mdrt->src_addr & ~(HRMOR_BIT); + region[j].dest = mdrt->dest_addr & ~(HRMOR_BIT); + region[j].size = mdrt->size; + + prlog(PR_NOTICE, "OPAL reserved region %d - src : 0x%llx, " + "dest : 0x%llx, size : 0x%llx\n", j, region[j].src, + region[j].dest, region[j].size); + + mdrt++; + j++; + if (j == count) + break; + } +} + void opal_mpipl_save_crashing_pir(void) { mpipl_metadata->crashing_pir = this_cpu()->pir; @@ -353,6 +411,9 @@ void opal_mpipl_init(void) /* Get metadata area pointer */ mpipl_metadata = (void *)(DUMP_METADATA_AREA_BASE); + if (dt_find_property(dump_node, "mpipl-boot")) + post_mpipl_get_opal_data(); + /* Clear OPAL metadata area */ if (sizeof(struct mpipl_metadata) > DUMP_METADATA_AREA_SIZE) { prlog(PR_ERR, "INSUFFICIENT OPAL METADATA AREA\n"); diff --git a/include/opal-api.h b/include/opal-api.h index 1a1f380..7d8e046 100644 --- a/include/opal-api.h +++ b/include/opal-api.h @@ -1223,6 +1223,26 @@ enum opal_mpipl_tags { OPAL_MPIPL_TAG_BOOT_MEM = 3, }; +/* Preserved memory details */ +struct opal_mpipl_region { + u64 src; + u64 dest; + u64 size; +}; + +/* Structure version */ +#define OPAL_MPIPL_VERSION 0x01 + +struct opal_mpipl_fadump { + u8 version; + u8 reserved[7]; + u32 crashing_pir; /* OPAL crashing CPU PIR */ + u32 cpu_data_version; + u32 cpu_data_size; + u32 region_cnt; + struct opal_mpipl_region region[]; +} __packed; + #endif /* __ASSEMBLY__ */ #endif /* __OPAL_API_H */ |