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From 3abc9878e862d3401f2e5b3eb9e507f10bad7e2e Mon Sep 17 00:00:00 2001
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From: Jack Miller <jack@codezen.org>
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Date: Tue, 23 Aug 2016 15:18:47 -0500
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Subject: [PATCH 27/43] devtree: Add parsed firmware version info
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We have /ibm,firmware-versions node in device tree ..which contains
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various firmware version information.
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Property name represents firmware component and property value
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represents the version.
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This patch adds support to parse above information on Power System.
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Sample output:
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*-firmware:0
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description: buildroot
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physical id: 1
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version: 211bd05
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*-firmware:1
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description: capp-ucode
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physical id: 2
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version: 1bb7503
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Signed-off-by: Jack Miller <jack@codezen.org>
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[Minor code cleanup, updated description - Vasant]
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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 d61347b..0bba4e9 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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@@ -218,6 +218,39 @@ static void scan_devtree_bootrom(hwNode & core)
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}
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}
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+static void scan_devtree_firmware_powernv(hwNode & core)
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+{
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+ int n;
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+ struct dirent **namelist;
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+
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+ if (!exists(DEVICETREE "/ibm,firmware-versions"))
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+ return;
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+
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+ pushd(DEVICETREE "/ibm,firmware-versions");
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+ n = scandir(".", &namelist, selectfile, alphasort);
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+ popd();
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+
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+ if (n <= 0)
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+ return;
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+
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+ for (int i = 0; i < n; i++)
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+ {
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+ string sname = string(namelist[i]->d_name);
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+ string fullpath = string(DEVICETREE) + "/ibm,firmware-versions/" + sname;
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+
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+ if (sname != "linux,phandle" && sname != "name" && sname != "phandle")
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+ {
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+ hwNode fwnode("firmware");
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+ fwnode.setDescription(sname);
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+ fwnode.setVersion(hw::strip(get_string(fullpath)));
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+ fwnode.claim();
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+ core.addChild(fwnode);
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+ }
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+ free(namelist[i]);
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+ }
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+
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+ free(namelist);
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+}
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static string cpubusinfo(int cpu)
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{
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@@ -1111,6 +1144,7 @@ bool scan_device_tree(hwNode & n)
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scan_devtree_root(*core);
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scan_devtree_cpu_power(*core);
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scan_devtree_memory_powernv(*core);
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+ scan_devtree_firmware_powernv(*core);
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n.addCapability("powernv", "Non-virtualized");
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n.addCapability("opal", "OPAL firmware");
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}
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--
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2.10.2
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