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ArmVirtPkg/FdtClientDxe: report address and size cell count directly 

The FDT client protocol methods dealing with "reg" properties return
the size of a "reg" element. Currently, we have hardcoded this as '8',
since #address-cells == #size-cells == 2 in most cases. However, for
different values, have a single 'reg' element size is not unambiguous,
since - however unlikely - if #address-cells != #size-cells, we do not
know which is which.

So before adding more methods to the protocol, fix up this oversight.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Ard Biesheuvel 2016-09-15 14:15:14 +01:00
parent 38ed4a9e3a
commit cfc8d51c0c
6 changed files with 31 additions and 14 deletions
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6
ArmVirtPkg/FdtClientDxe/FdtClientDxe.c
View File

@ -159,7 +159,8 @@ FindCompatibleNodeReg (
IN FDT_CLIENT_PROTOCOL *This,
IN CONST CHAR8 *CompatibleString,
OUT CONST VOID **Reg,
OUT UINT32 *RegElemSize,
OUT UINTN *AddressCells,
OUT UINTN *SizeCells,
OUT UINT32 *RegSize
)
{
@ -185,7 +186,8 @@ FindCompatibleNodeReg (
return EFI_NOT_FOUND;
}
*RegElemSize = 8;
*AddressCells = 2;
*SizeCells = 2;
return EFI_SUCCESS;
}

3
ArmVirtPkg/Include/Protocol/FdtClient.h
View File

@ -80,7 +80,8 @@ EFI_STATUS
IN FDT_CLIENT_PROTOCOL *This,
IN CONST CHAR8 *CompatibleString,
OUT CONST VOID **Reg,
OUT UINT32 *RegElemSize,
OUT UINTN *AddressCells,
OUT UINTN *SizeCells,
OUT UINT32 *RegSize
);

9
ArmVirtPkg/Library/ArmVirtGicArchLib/ArmVirtGicArchLib.c
View File

@ -36,7 +36,8 @@ ArmVirtGicArchLibConstructor (
UINT32 IccSre;
FDT_CLIENT_PROTOCOL *FdtClient;
CONST UINT64 *Reg;
UINT32 RegElemSize, RegSize;
UINT32 RegSize;
UINTN AddressCells, SizeCells;
UINTN GicRevision;
EFI_STATUS Status;
UINT64 DistBase, CpuBase, RedistBase;
@ -47,11 +48,13 @@ ArmVirtGicArchLibConstructor (
GicRevision = 2;
Status = FdtClient->FindCompatibleNodeReg (FdtClient, "arm,cortex-a15-gic",
(CONST VOID **)&Reg, &RegElemSize, &RegSize);
(CONST VOID **)&Reg, &AddressCells, &SizeCells,
&RegSize);
if (Status == EFI_NOT_FOUND) {
GicRevision = 3;
Status = FdtClient->FindCompatibleNodeReg (FdtClient, "arm,gic-v3",
(CONST VOID **)&Reg, &RegElemSize, &RegSize);
(CONST VOID **)&Reg, &AddressCells, &SizeCells,
&RegSize);
}
if (EFI_ERROR (Status)) {
return Status;

9
ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c
View File

@ -122,7 +122,8 @@ QemuFwCfgInitialize (
EFI_STATUS Status;
FDT_CLIENT_PROTOCOL *FdtClient;
CONST UINT64 *Reg;
UINT32 RegElemSize, RegSize;
UINT32 RegSize;
UINTN AddressCells, SizeCells;
UINT64 FwCfgSelectorAddress;
UINT64 FwCfgSelectorSize;
UINT64 FwCfgDataAddress;
@ -135,7 +136,8 @@ QemuFwCfgInitialize (
ASSERT_EFI_ERROR (Status);
Status = FdtClient->FindCompatibleNodeReg (FdtClient, "qemu,fw-cfg-mmio",
(CONST VOID **)&Reg, &RegElemSize, &RegSize);
(CONST VOID **)&Reg, &AddressCells, &SizeCells,
&RegSize);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_WARN,
"%a: No 'qemu,fw-cfg-mmio' compatible DT node found (Status == %r)\n",
@ -143,7 +145,8 @@ QemuFwCfgInitialize (
return EFI_SUCCESS;
}
ASSERT (RegElemSize == sizeof (UINT64));
ASSERT (AddressCells == 2);
ASSERT (SizeCells == 2);
ASSERT (RegSize == 2 * sizeof (UINT64));
FwCfgDataAddress = SwapBytes64 (Reg[0]);

8
ArmVirtPkg/XenAcpiPlatformDxe/XenAcpiPlatformDxe.c
View File

@ -45,7 +45,8 @@ GetXenArmAcpiRsdp (
EFI_STATUS Status;
FDT_CLIENT_PROTOCOL *FdtClient;
CONST UINT64 *Reg;
UINT32 RegElemSize, RegSize;
UINT32 RegSize;
UINTN AddressCells, SizeCells;
UINT64 RegBase;
UINT8 Sum;
@ -59,13 +60,16 @@ GetXenArmAcpiRsdp (
ASSERT_EFI_ERROR (Status);
Status = FdtClient->FindCompatibleNodeReg (FdtClient, "xen,guest-acpi",
(CONST VOID **)&Reg, &RegElemSize, &RegSize);
(CONST VOID **)&Reg, &AddressCells, &SizeCells,
&RegSize);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_WARN, "%a: No 'xen,guest-acpi' compatible DT node found\n",
__FUNCTION__));
return EFI_NOT_FOUND;
}
ASSERT (AddressCells == 2);
ASSERT (SizeCells == 2);
ASSERT (RegSize == 2 * sizeof (UINT64));
RegBase = SwapBytes64(Reg[0]);

10
ArmVirtPkg/XenioFdtDxe/XenioFdtDxe.c
View File

@ -31,7 +31,8 @@ InitializeXenioFdtDxe (
EFI_STATUS Status;
FDT_CLIENT_PROTOCOL *FdtClient;
CONST UINT64 *Reg;
UINT32 RegElemSize, RegSize;
UINT32 RegSize;
UINTN AddressCells, SizeCells;
EFI_HANDLE Handle;
UINT64 RegBase;
@ -40,14 +41,17 @@ InitializeXenioFdtDxe (
ASSERT_EFI_ERROR (Status);
Status = FdtClient->FindCompatibleNodeReg (FdtClient, "xen,xen",
(CONST VOID **)&Reg, &RegElemSize, &RegSize);
(CONST VOID **)&Reg, &AddressCells, &SizeCells,
&RegSize);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_WARN, "%a: No 'xen,xen' compatible DT node found\n",
__FUNCTION__));
return EFI_UNSUPPORTED;
}
ASSERT (RegSize == 16);
ASSERT (AddressCells == 2);
ASSERT (SizeCells == 2);
ASSERT (RegSize == 2 * sizeof (UINT64));
//
// Retrieve the reg base from this node and wire it up to the