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From 9f448f011d58c5c2e5279dccb077bfd83a02da68 Mon Sep 17 00:00:00 2001
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From: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
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Date: Tue, 29 Nov 2016 12:02:03 +0530
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Subject: [PATCH 36/43] devtree: Add description, vendor and clock info to
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memory bank
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This patch parses SPD info to get vendor id and then uses
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jedec_resolve() to get vendor name. Also adds clock and description
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info based on SPD values.
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Sample output;
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*-bank:1
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description: RDIMM DDR3 1600 MHz (0.6ns)
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product: HMT42GR7BFR4A-PB
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vendor: Hynix Semiconductor (Hyundai Electronics)
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physical id: 1
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version: 5438,15 33,01
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serial: 0x10c0af2c
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slot: Physical:/Sys0/Node0/DIMM11
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size: 16GiB
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clock: 1333MHz (0.8ns)
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capabilities: ecc spd-1.3
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configuration: errordetection=ecc
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Signed-off-by: Jack Miller <jack@codezen.org>
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Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
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---
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src/core/device-tree.cc | 34 ++++++++++++++++++++++++++++++++++
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1 file changed, 34 insertions(+)
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diff --git a/src/core/device-tree.cc b/src/core/device-tree.cc
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index e286ab4..e224024 100644
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--- a/src/core/device-tree.cc
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+++ b/src/core/device-tree.cc
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@@ -14,6 +14,7 @@
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#include "version.h"
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#include "device-tree.h"
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#include "osutils.h"
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+#include "jedec.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <arpa/inet.h>
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@@ -808,6 +809,39 @@ static void add_memory_bank_spd(string path, hwNode & bank)
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bank.setConfig("errordetection", "ecc");
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break;
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}
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+
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+ double ns = (dimminfo[0xc] / 2) * (dimminfo[0xa] / (float) dimminfo[0xb]);
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+ bank.setClock(1000000000 / ns);
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+
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+ char vendor[3];
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+ snprintf(vendor, sizeof(vendor), "%x%x", dimminfo[0x76], dimminfo[0x75]);
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+ bank.setVendor(jedec_resolve(vendor));
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+
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+ char description[100];
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+ const char *type, *mod_type;
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+
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+ type = "DDR3";
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+ switch(dimminfo[0x3])
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+ {
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+ case 0x1:
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+ mod_type = "RDIMM";
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+ break;
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+ case 0x2:
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+ mod_type = "UDIMM";
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+ break;
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+ case 0x3:
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+ mod_type = "SODIMM";
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+ break;
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+ case 0x4:
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+ mod_type = "LRDIMM";
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+ break;
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+ default:
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+ mod_type = "DIMM";
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+ }
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+
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+ snprintf(description, sizeof(description), "%s %s %d MHz (%0.1fns)",
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+ mod_type, type, (int) (1000 / ns), ns);
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+ bank.setDescription(description);
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} else {
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mfg_loc_offset = 0x48;
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rev_offset1 = 0x5b;
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--
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2.10.2
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