From f5b9369720ac0458be13e723468e27ab987b439e Mon Sep 17 00:00:00 2001
From: Patrick Rudolph <patrick.rudolph@9elements.com>
Date: Fri, 12 Apr 2019 15:59:40 +0200
Subject: smbios: Walk over PCI devicetree to fill type 9
Use the devicetree values for type 9 slots.
Tested on Lenovo T520.
Change-Id: I1961d8af2d21f755ff52ad58804ea9b31d2a5b9b
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32308
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
---
src/arch/x86/smbios.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
(limited to 'src')
diff --git a/src/arch/x86/smbios.c b/src/arch/x86/smbios.c
index 7c87c693e1..589f4f0e30 100644
--- a/src/arch/x86/smbios.c
+++ b/src/arch/x86/smbios.c
@@ -999,6 +999,56 @@ static int smbios_write_type127(unsigned long *current, int handle)
return len;
}
+/* Generate Type9 entries from devicetree */
+static int smbios_walk_device_tree_type9(struct device *dev, int *handle,
+ unsigned long *current)
+{
+ enum misc_slot_usage usage;
+ enum slot_data_bus_bandwidth bandwidth;
+ enum misc_slot_type type;
+ enum misc_slot_length length;
+
+ if (dev->path.type != DEVICE_PATH_PCI)
+ return 0;
+
+ if (!dev->smbios_slot_type && !dev->smbios_slot_data_width &&
+ !dev->smbios_slot_designation && !dev->smbios_slot_length)
+ return 0;
+
+ if (dev_is_active_bridge(dev))
+ usage = SlotUsageInUse;
+ else if (dev->enabled)
+ usage = SlotUsageAvailable;
+ else
+ usage = SlotUsageUnknown;
+
+ if (dev->smbios_slot_data_width)
+ bandwidth = dev->smbios_slot_data_width;
+ else
+ bandwidth = SlotDataBusWidthUnknown;
+
+ if (dev->smbios_slot_type)
+ type = dev->smbios_slot_type;
+ else
+ type = SlotTypeUnknown;
+
+ if (dev->smbios_slot_length)
+ length = dev->smbios_slot_length;
+ else
+ length = SlotLengthUnknown;
+
+ return smbios_write_type9(current, handle,
+ dev->smbios_slot_designation,
+ type,
+ bandwidth,
+ usage,
+ length,
+ 1,
+ 0,
+ dev->bus->secondary,
+ dev->path.pci.devfn);
+}
+
static int smbios_walk_device_tree(struct device *tree, int *handle,
unsigned long *current)
{
@@ -1011,6 +1061,7 @@ static int smbios_walk_device_tree(struct device *tree, int *handle,
dev_name(dev));
len += dev->ops->get_smbios_data(dev, handle, current);
}
+ len += smbios_walk_device_tree_type9(dev, handle, current);
}
return len;
}
--
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