haswell: add CBMEM_MEMINFO table when initing RAM

Populate a memory_info struct with PEI and SPD data,
in order to inject the CBMEM_INFO table necessary to
populate a type17 SMBIOS table.

On Broadwell, this is done by the MRC binary, but the older
Haswell MRC binary doesn't populate the pei_data struct with
all the info needed, so we have to pull it from the SPD.

Some values are hardcoded based on platform specifications.

Change-Id: Iea837d23f2c9c1c943e0db28cf81b265f054e9d1
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/19958
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/cpu/intel/haswell/romstage.c

@@ -245,6 +245,8 @@ void romstage_common(const struct romstage_params *params)
 	#endif
 	}
 
+	setup_sdram_meminfo(params->pei_data);
+
 	romstage_handoff_init(wake_from_s3);
 
 	post_code(0x3f);

src/include/device/dram/ddr3.h

@@ -32,6 +32,19 @@
 #include <stdint.h>
 #include <spd.h>
 
+/**
+ * Convenience definitions for SPD offsets
+ *
+ * @{
+ */
+#define SPD_DIMM_MOD_ID1	117
+#define SPD_DIMM_MOD_ID2	118
+#define SPD_DIMM_SERIAL_NUM	122
+#define SPD_DIMM_SERIAL_LEN	4
+#define SPD_DIMM_PART_NUM	128
+#define SPD_DIMM_PART_LEN	18
+/** @} */
+
 /**
  * \brief Convenience definitions for TCK values
  *

src/northbridge/intel/haswell/raminit.c

@@ -21,9 +21,13 @@
 #include <cbfs.h>
 #include <halt.h>
 #include <ip_checksum.h>
+#include <memory_info.h>
 #include <northbridge/intel/common/mrc_cache.h>
 #include <pc80/mc146818rtc.h>
 #include <device/pci_def.h>
+#include <device/dram/ddr3.h>
+#include <smbios.h>
+#include <spd.h>
 #include <vboot/vboot_common.h>
 #include "raminit.h"
 #include "pei_data.h"
@@ -171,3 +175,54 @@ void sdram_initialize(struct pei_data *pei_data)
 
 	report_memory_config();
 }
+
+void setup_sdram_meminfo(struct pei_data *pei_data)
+{
+	u32 addr_decoder_common, addr_decode_ch[2];
+	struct memory_info* mem_info;
+	struct dimm_info *dimm;
+	int ddr_frequency;
+	int dimm_size;
+	int ch, d_num;
+	int dimm_cnt = 0;
+
+	mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(struct memory_info));
+	memset(mem_info, 0, sizeof(struct memory_info));
+
+	addr_decoder_common = MCHBAR32(0x5000);
+	addr_decode_ch[0] = MCHBAR32(0x5004);
+	addr_decode_ch[1] = MCHBAR32(0x5008);
+
+	ddr_frequency = (MCHBAR32(0x5e04) * 13333 * 2 + 50) / 100;
+
+	for (ch = 0; ch < ARRAY_SIZE(addr_decode_ch); ch++) {
+		u32 ch_conf = addr_decode_ch[ch];
+		/* DIMMs A/B */
+		for (d_num = 0; d_num < 2; d_num++) {
+			dimm_size = ((ch_conf >> (d_num * 8)) & 0xff) * 256;
+			if (dimm_size) {
+				dimm = &mem_info->dimm[dimm_cnt];
+				dimm->dimm_size = dimm_size;
+				dimm->ddr_type = MEMORY_TYPE_DDR3;
+				dimm->ddr_frequency = ddr_frequency;
+				dimm->rank_per_dimm = 1 + ((ch_conf >> (17 + d_num)) & 1);
+				dimm->channel_num = ch;
+				dimm->dimm_num = d_num;
+				dimm->bank_locator = ch * 2;
+				memcpy(dimm->serial,
+					&pei_data->spd_data[dimm_cnt][SPD_DIMM_SERIAL_NUM],
+					SPD_DIMM_SERIAL_LEN);
+				memcpy(dimm->module_part_number,
+					&pei_data->spd_data[dimm_cnt][SPD_DIMM_PART_NUM],
+					SPD_DIMM_PART_LEN);
+				dimm->mod_id =
+					(pei_data->spd_data[dimm_cnt][SPD_DIMM_MOD_ID2] << 8) |
+					(pei_data->spd_data[dimm_cnt][SPD_DIMM_MOD_ID1] & 0xFF);
+				dimm->mod_type = SPD_SODIMM;
+				dimm->bus_width = 0x3;	/* 64-bit */
+				dimm_cnt++;
+			}
+		}
+	}
+	mem_info->dimm_cnt = dimm_cnt;
+}

src/northbridge/intel/haswell/raminit.h

@@ -19,6 +19,7 @@
 #include "pei_data.h"
 
 void sdram_initialize(struct pei_data *pei_data);
+void setup_sdram_meminfo(struct pei_data *pei_data);
 int fixup_haswell_errata(void);
 /* save_mrc_data() must be called after cbmem has been initialized. */
 void save_mrc_data(struct pei_data *pei_data);