src/soc/intel/xeon_sp/ras/hest.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 #include <soc/acpi.h>
   4 #include <acpi/acpi_gnvs.h>
   5 #include <cbmem.h>
   6 #include <console/console.h>
   7 #include <soc/hest.h>
   8 #include <intelblocks/nvs.h>
   9
  10 static u64 hest_get_elog_addr(void)
  11 {
  12         /* The elog address comes from reserved memory */
  13         struct global_nvs *gnvs;
  14         gnvs = acpi_get_gnvs();
  15         if (!gnvs) {
  16                 printk(BIOS_ERR, "Unable to get gnvs\n");
  17                 return 0;
  18         }
  19
  20         /* Runtime logging address */
  21         printk(BIOS_DEBUG, "\t status blk start addr = %llx\n", gnvs->hest_log_addr);
  22         printk(BIOS_DEBUG, "\t size = %x\n", CONFIG_ERROR_LOG_BUFFER_SIZE);
  23         return gnvs->hest_log_addr;
  24 }
  25
  26 static u32 acpi_hest_add_ghes(void *current)
  27 {
  28         ghes_record_t *rec = (ghes_record_t *)current;
  29         u32 size = sizeof(ghes_record_t);
  30
  31         /* Fill GHES error source descriptor  */
  32         memset(rec, 0, size);
  33         rec->esd.type = HEST_GHES_DESC_TYPE;
  34         rec->esd.source_id = 0; /* 0 for MCE check exception source */
  35         rec->esd.enabled = 1;
  36         rec->esd.related_src_id = 0xffff;
  37         rec->esd.prealloc_erecords = 1;
  38         rec->esd.max_section_per_record = 0xf;
  39         rec->max_raw_data_length = GHES_MAX_RAW_DATA_LENGTH;
  40
  41         /* Add error_status_address */
  42         rec->sts_addr.space_id = 0;
  43         rec->sts_addr.bit_width = 0x40;
  44         rec->sts_addr.bit_offset = 0;
  45         rec->sts_addr.access_size = QWORD_ACCESS;
  46
  47         /* Add notification structure */
  48         rec->notify.type = NOTIFY_TYPE_SCI;
  49         rec->notify.length = sizeof(acpi_hest_hen_t);
  50         rec->err_sts_blk_len = GHEST_ERROR_STATUS_BLOCK_LENGTH;
  51
  52         /* error status block entries start address */
  53         if (CONFIG(SOC_ACPI_HEST))
  54                 rec->sts_addr.addr = hest_get_elog_addr();
  55
  56         return size;
  57 }
  58
  59 static unsigned long acpi_fill_hest(acpi_hest_t *hest)
  60 {
  61         acpi_header_t *header = &(hest->header);
  62         void *current;
  63         current = (void *)(hest);
  64         void *next = current;
  65         next = hest + 1;
  66         next += acpi_hest_add_ghes(next);
  67         hest->error_source_count += 1;
  68         header->length = next - current;
  69         return header->length;
  70 }
  71
  72 unsigned long hest_create(unsigned long current, struct acpi_rsdp *rsdp)
  73 {
  74         struct global_nvs *gnvs;
  75         acpi_hest_t *hest;
  76
  77         /* Reserve memory for Enhanced error logging */
  78         void *mem = cbmem_add(CBMEM_ID_ACPI_HEST, CONFIG_ERROR_LOG_BUFFER_SIZE);
  79         if (!mem) {
  80                 printk(BIOS_ERR, "Unable to allocate HEST memory\n");
  81                 return current;
  82         }
  83
  84         printk(BIOS_DEBUG, "HEST memory created: %p\n", mem);
  85         gnvs = acpi_get_gnvs();
  86         if (!gnvs) {
  87                 printk(BIOS_ERR, "Unable to get gnvs\n");
  88                 return current;
  89         }
  90         gnvs->hest_log_addr = (uintptr_t)mem;
  91         printk(BIOS_DEBUG, "elog_addr: %llx, size:%x\n", gnvs->hest_log_addr,
  92                 CONFIG_ERROR_LOG_BUFFER_SIZE);
  93
  94         current = ALIGN_UP(current, 8);
  95         hest = (acpi_hest_t *)current;
  96         acpi_write_hest(hest, acpi_fill_hest);
  97         acpi_add_table(rsdp, (void *)current);
  98         current += hest->header.length;
  99         return current;
 100 }