1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <cbmem.h>
4 #include <console/console.h>
5 #include <fsp/util.h>
6 #include <memory_info.h>
7 #include <soc/intel/common/smbios.h>
8 #include <soc/meminit.h>
9 #include <string.h>
10
11 #define FSP_SMBIOS_MEMORY_INFO_GUID \
12 { \
13 0x8c, 0x10, 0xa1, 0x01, 0xee, 0x9d, 0x84, 0x49, \
14 0x88, 0xc3, 0xee, 0xe8, 0xc4, 0x9e, 0xfb, 0x89 \
15 }
16
save_lpddr4_dimm_info_part_num(const char * dram_part_num)17 void save_lpddr4_dimm_info_part_num(const char *dram_part_num)
18 {
19 int channel, dimm, dimm_max, index;
20 size_t hob_size;
21 const DIMM_INFO *src_dimm;
22 struct dimm_info *dest_dimm;
23 struct memory_info *mem_info;
24 const CHANNEL_INFO *channel_info;
25 const FSP_SMBIOS_MEMORY_INFO *memory_info_hob;
26 const uint8_t smbios_memory_info_guid[16] =
27 FSP_SMBIOS_MEMORY_INFO_GUID;
28
29 if (!dram_part_num)
30 dram_part_num = "Unknown";
31
32 /* Locate the memory info HOB */
33 memory_info_hob = fsp_find_extension_hob_by_guid(
34 smbios_memory_info_guid,
35 &hob_size);
36
37 if (memory_info_hob == NULL || hob_size == 0) {
38 printk(BIOS_ERR, "SMBIOS memory info HOB is missing\n");
39 return;
40 }
41
42 /*
43 * Allocate CBMEM area for DIMM information used to populate SMBIOS
44 * table 17
45 */
46 mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info));
47 if (mem_info == NULL) {
48 printk(BIOS_ERR, "CBMEM entry for DIMM info missing\n");
49 return;
50 }
51 memset(mem_info, 0, sizeof(*mem_info));
52
53 /* Describe the first N DIMMs in the system */
54 index = 0;
55 dimm_max = ARRAY_SIZE(mem_info->dimm);
56
57 for (channel = 0; channel < memory_info_hob->ChannelCount; channel++) {
58 if (index >= dimm_max)
59 break;
60 channel_info = &memory_info_hob->ChannelInfo[channel];
61 for (dimm = 0; dimm < channel_info->DimmCount; dimm++) {
62 if (index >= dimm_max)
63 break;
64 src_dimm = &channel_info->DimmInfo[dimm];
65 dest_dimm = &mem_info->dimm[index];
66
67 if (!src_dimm->SizeInMb)
68 continue;
69
70 /* Populate the DIMM information */
71 dimm_info_fill(dest_dimm,
72 src_dimm->SizeInMb,
73 memory_info_hob->MemoryType,
74 memory_info_hob->MemoryFrequencyInMHz,
75 0,
76 channel_info->ChannelId,
77 src_dimm->DimmId,
78 dram_part_num,
79 strlen(dram_part_num),
80 NULL, /* SPD not available */
81 memory_info_hob->DataWidth,
82 0,
83 0,
84 src_dimm->MfgId,
85 0,
86 0,
87 0);
88 index++;
89 }
90 }
91 mem_info->dimm_cnt = index;
92 printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt);
93 }
94
save_lpddr4_dimm_info(const struct lpddr4_cfg * lp4cfg,size_t mem_sku)95 void save_lpddr4_dimm_info(const struct lpddr4_cfg *lp4cfg, size_t mem_sku)
96 {
97 const char *part_num = NULL;
98
99 if (mem_sku >= lp4cfg->num_skus) {
100 printk(BIOS_ERR, "Too few LPDDR4 SKUs: 0x%zx/0x%zx\n",
101 mem_sku, lp4cfg->num_skus);
102 } else {
103 part_num = lp4cfg->skus[mem_sku].part_num;
104 }
105
106 save_lpddr4_dimm_info_part_num(part_num);
107 }
108