PropertyTypeRtc,\r
PropertyTypeVirtio,\r
PropertyTypeUart,\r
- PropertyTypePciHost,\r
PropertyTypeXen,\r
} PROPERTY_TYPE;\r
\r
{ PropertyTypeRtc, "arm,pl031" },\r
{ PropertyTypeVirtio, "virtio,mmio" },\r
{ PropertyTypeUart, "arm,pl011" },\r
- { PropertyTypePciHost, "pci-host-ecam-generic" },\r
{ PropertyTypeXen, "xen,xen" },\r
{ PropertyTypeUnknown, "" }\r
};\r
return PropertyTypeUnknown;\r
}\r
\r
-//\r
-// We expect the "ranges" property of "pci-host-ecam-generic" to consist of\r
-// records like this.\r
-//\r
-#pragma pack (1)\r
-typedef struct {\r
- UINT32 Type;\r
- UINT64 ChildBase;\r
- UINT64 CpuBase;\r
- UINT64 Size;\r
-} DTB_PCI_HOST_RANGE_RECORD;\r
-#pragma pack ()\r
-\r
-#define DTB_PCI_HOST_RANGE_RELOCATABLE BIT31\r
-#define DTB_PCI_HOST_RANGE_PREFETCHABLE BIT30\r
-#define DTB_PCI_HOST_RANGE_ALIASED BIT29\r
-#define DTB_PCI_HOST_RANGE_MMIO32 BIT25\r
-#define DTB_PCI_HOST_RANGE_MMIO64 (BIT25 | BIT24)\r
-#define DTB_PCI_HOST_RANGE_IO BIT24\r
-#define DTB_PCI_HOST_RANGE_TYPEMASK (BIT31 | BIT30 | BIT29 | BIT25 | BIT24)\r
-\r
-/**\r
- Process the device tree node describing the generic PCI host controller.\r
-\r
- param[in] DeviceTreeBase Pointer to the device tree.\r
-\r
- param[in] Node Offset of the device tree node whose "compatible"\r
- property is "pci-host-ecam-generic".\r
-\r
- param[in] RegProp Pointer to the "reg" property of Node. The caller\r
- is responsible for ensuring that the size of the\r
- property is 4 UINT32 cells.\r
-\r
- @retval EFI_SUCCESS Parsing successful, properties parsed from Node\r
- have been stored in dynamic PCDs.\r
-\r
- @retval EFI_PROTOCOL_ERROR Parsing failed. PCDs are left unchanged.\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ProcessPciHost (\r
- IN CONST VOID *DeviceTreeBase,\r
- IN INT32 Node,\r
- IN CONST VOID *RegProp\r
- )\r
-{\r
- UINT64 ConfigBase, ConfigSize;\r
- CONST VOID *Prop;\r
- INT32 Len;\r
- UINT32 BusMin, BusMax;\r
- UINT32 RecordIdx;\r
- UINT64 IoBase, IoSize, IoTranslation;\r
- UINT64 MmioBase, MmioSize, MmioTranslation;\r
-\r
- //\r
- // Fetch the ECAM window.\r
- //\r
- ConfigBase = fdt64_to_cpu (((CONST UINT64 *)RegProp)[0]);\r
- ConfigSize = fdt64_to_cpu (((CONST UINT64 *)RegProp)[1]);\r
-\r
- //\r
- // Fetch the bus range (note: inclusive).\r
- //\r
- Prop = fdt_getprop (DeviceTreeBase, Node, "bus-range", &Len);\r
- if (Prop == NULL || Len != 2 * sizeof(UINT32)) {\r
- DEBUG ((EFI_D_ERROR, "%a: 'bus-range' not found or invalid\n",\r
- __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
- BusMin = fdt32_to_cpu (((CONST UINT32 *)Prop)[0]);\r
- BusMax = fdt32_to_cpu (((CONST UINT32 *)Prop)[1]);\r
-\r
- //\r
- // Sanity check: the config space must accommodate all 4K register bytes of\r
- // all 8 functions of all 32 devices of all buses.\r
- //\r
- if (BusMax < BusMin || BusMax - BusMin == MAX_UINT32 ||\r
- DivU64x32 (ConfigSize, SIZE_4KB * 8 * 32) < BusMax - BusMin + 1) {\r
- DEBUG ((EFI_D_ERROR, "%a: invalid 'bus-range' and/or 'reg'\n",\r
- __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- //\r
- // Iterate over "ranges".\r
- //\r
- Prop = fdt_getprop (DeviceTreeBase, Node, "ranges", &Len);\r
- if (Prop == NULL || Len == 0 ||\r
- Len % sizeof (DTB_PCI_HOST_RANGE_RECORD) != 0) {\r
- DEBUG ((EFI_D_ERROR, "%a: 'ranges' not found or invalid\n", __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- //\r
- // IoBase, IoTranslation, MmioBase and MmioTranslation are initialized only\r
- // in order to suppress '-Werror=maybe-uninitialized' warnings *incorrectly*\r
- // emitted by some gcc versions.\r
- //\r
- IoBase = 0;\r
- IoTranslation = 0;\r
- MmioBase = 0;\r
- MmioTranslation = 0;\r
-\r
- //\r
- // IoSize and MmioSize are initialized to zero because the logic below\r
- // requires it.\r
- //\r
- IoSize = 0;\r
- MmioSize = 0;\r
- for (RecordIdx = 0; RecordIdx < Len / sizeof (DTB_PCI_HOST_RANGE_RECORD);\r
- ++RecordIdx) {\r
- CONST DTB_PCI_HOST_RANGE_RECORD *Record;\r
-\r
- Record = (CONST DTB_PCI_HOST_RANGE_RECORD *)Prop + RecordIdx;\r
- switch (fdt32_to_cpu (Record->Type) & DTB_PCI_HOST_RANGE_TYPEMASK) {\r
- case DTB_PCI_HOST_RANGE_IO:\r
- IoBase = fdt64_to_cpu (Record->ChildBase);\r
- IoSize = fdt64_to_cpu (Record->Size);\r
- IoTranslation = fdt64_to_cpu (Record->CpuBase) - IoBase;\r
- break;\r
-\r
- case DTB_PCI_HOST_RANGE_MMIO32:\r
- MmioBase = fdt64_to_cpu (Record->ChildBase);\r
- MmioSize = fdt64_to_cpu (Record->Size);\r
- MmioTranslation = fdt64_to_cpu (Record->CpuBase) - MmioBase;\r
-\r
- if (MmioBase > MAX_UINT32 || MmioSize > MAX_UINT32 ||\r
- MmioBase + MmioSize > SIZE_4GB) {\r
- DEBUG ((EFI_D_ERROR, "%a: MMIO32 space invalid\n", __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- if (MmioTranslation != 0) {\r
- DEBUG ((EFI_D_ERROR, "%a: unsupported nonzero MMIO32 translation "\r
- "0x%Lx\n", __FUNCTION__, MmioTranslation));\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- break;\r
- }\r
- }\r
- if (IoSize == 0 || MmioSize == 0) {\r
- DEBUG ((EFI_D_ERROR, "%a: %a space empty\n", __FUNCTION__,\r
- (IoSize == 0) ? "IO" : "MMIO32"));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- PcdSet64 (PcdPciExpressBaseAddress, ConfigBase);\r
-\r
- PcdSet32 (PcdPciBusMin, BusMin);\r
- PcdSet32 (PcdPciBusMax, BusMax);\r
-\r
- PcdSet64 (PcdPciIoBase, IoBase);\r
- PcdSet64 (PcdPciIoSize, IoSize);\r
- PcdSet64 (PcdPciIoTranslation, IoTranslation);\r
-\r
- PcdSet32 (PcdPciMmio32Base, (UINT32)MmioBase);\r
- PcdSet32 (PcdPciMmio32Size, (UINT32)MmioSize);\r
-\r
- PcdSetBool (PcdPciDisableBusEnumeration, FALSE);\r
-\r
- DEBUG ((EFI_D_INFO, "%a: Config[0x%Lx+0x%Lx) Bus[0x%x..0x%x] "\r
- "Io[0x%Lx+0x%Lx)@0x%Lx Mem[0x%Lx+0x%Lx)@0x%Lx\n", __FUNCTION__, ConfigBase,\r
- ConfigSize, BusMin, BusMax, IoBase, IoSize, IoTranslation, MmioBase,\r
- MmioSize, MmioTranslation));\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
EFI_STATUS\r
EFIAPI\r
InitializeVirtFdtDxe (\r
VIRTIO_TRANSPORT_DEVICE_PATH *DevicePath;\r
EFI_HANDLE Handle;\r
UINT64 RegBase;\r
- BOOLEAN HavePci;\r
\r
Hob = GetFirstGuidHob(&gFdtHobGuid);\r
if (Hob == NULL || GET_GUID_HOB_DATA_SIZE (Hob) != sizeof (UINT64)) {\r
DEBUG ((EFI_D_INFO, "%a: DTB @ 0x%p\n", __FUNCTION__, DeviceTreeBase));\r
\r
RtcNode = -1;\r
- HavePci = FALSE;\r
//\r
// Now enumerate the nodes and install peripherals that we are interested in,\r
// i.e., GIC, RTC and virtio MMIO nodes\r
ASSERT (RegProp != NULL);\r
\r
switch (PropType) {\r
- case PropertyTypePciHost:\r
- ASSERT (Len == 2 * sizeof (UINT64));\r
- Status = ProcessPciHost (DeviceTreeBase, Node, RegProp);\r
- ASSERT_EFI_ERROR (Status);\r
- HavePci = TRUE;\r
- break;\r
-\r
case PropertyTypeVirtio:\r
ASSERT (Len == 16);\r
//\r
"disabled") != 0) {\r
DEBUG ((EFI_D_WARN, "Failed to set PL031 status to 'disabled'\n"));\r
}\r
-\r
- if (HavePci) {\r
- //\r
- // Set the /chosen/linux,pci-probe-only property to 1, so that the PCI\r
- // setup we will perform in the firmware is honored by the Linux OS,\r
- // rather than torn down and done from scratch. This is generally a more\r
- // sensible approach, and aligns with what ACPI based OSes do in general.\r
- //\r
- // In case we are exposing an emulated VGA PCI device to the guest, which\r
- // may subsequently get exposed via the Graphics Output protocol and\r
- // driven as an efifb by Linux, we need this setting to prevent the\r
- // framebuffer from becoming unresponsive.\r
- //\r
- Node = fdt_path_offset (DeviceTreeBase, "/chosen");\r
- if (Node < 0) {\r
- Node = fdt_add_subnode (DeviceTreeBase, 0, "/chosen");\r
- }\r
- if (Node < 0 ||\r
- fdt_setprop_u32 (DeviceTreeBase, Node, "linux,pci-probe-only", 1) < 0) {\r
- DEBUG ((EFI_D_WARN, "Failed to set /chosen/linux,pci-probe-only property\n"));\r
- }\r
- }\r
}\r
return EFI_SUCCESS;\r
}\r
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