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| author | Chao Li <lichao@loongson.cn> | 2024-01-16 20:26:22 +0800 |
|---|---|---|
| committer | Liming Gao <gaoliming@byosoft.com.cn> | 2024-02-06 23:51:47 +0800 |
| commit | 0cca97e0a839eac1a333193d7811a32ad5c44c5f (patch) | |
| tree | 19983fd222ac89d530ed9ef172713ea8187117e5 /OvmfPkg/Include | |
| parent | 5a3788bfca0b305044704bdb02d582f49974c9f3 (diff) | |
| download | edk2-0cca97e0a839eac1a333193d7811a32ad5c44c5f.zip edk2-0cca97e0a839eac1a333193d7811a32ad5c44c5f.tar.gz edk2-0cca97e0a839eac1a333193d7811a32ad5c44c5f.tar.bz2 | |
ArmVirtPkg: Move the FdtSerialPortAddressLib to OvmfPkg
Move the FdtSerialPortAddressLib to Ovmfpkg so that other ARCH can
easily use it.
Build-tested only (with "ArmVirtQemu.dsc and OvmfPkgX64.dsc").
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4584
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Chao Li <lichao@loongson.cn>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'OvmfPkg/Include')
| -rw-r--r-- | OvmfPkg/Include/Library/FdtSerialPortAddressLib.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/OvmfPkg/Include/Library/FdtSerialPortAddressLib.h b/OvmfPkg/Include/Library/FdtSerialPortAddressLib.h new file mode 100644 index 0000000..3d4c911 --- /dev/null +++ b/OvmfPkg/Include/Library/FdtSerialPortAddressLib.h @@ -0,0 +1,83 @@ +/** @file
+ Determine the base addresses of serial ports from the Device Tree.
+
+ Copyright (C) Red Hat
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef FDT_SERIAL_PORT_ADDRESS_LIB_H_
+#define FDT_SERIAL_PORT_ADDRESS_LIB_H_
+
+#include <Base.h>
+
+typedef struct {
+ UINTN NumberOfPorts;
+ UINT64 BaseAddress[2];
+} FDT_SERIAL_PORTS;
+
+/**
+ Collect the first ARRAY_SIZE (Ports->BaseAddress) serial ports into Ports from
+ DeviceTree.
+
+ @param[in] DeviceTree The flat device tree (FDT) to scan.
+
+ @param[in] Compatible Look for Compatible in the "compatible" property of the
+ scanned nodes.
+
+ @param[out] Ports On successful return, Ports->NumberOfPorts contains the
+ number of serial ports found; it is (a) positive and
+ (b) at most ARRAY_SIZE (Ports->BaseAddress). If the FDT
+ had more serial ports, those are not reported. On
+ error, the contents of Ports are indeterminate.
+
+ @retval RETURN_INVALID_PARAMETER DeviceTree does not point to a valid FDT
+ header.
+
+ @retval RETURN_NOT_FOUND No compatible and enabled serial port has
+ been found.
+
+ @retval RETURN_SUCCESS At least one compatible and enabled serial
+ port has been found; Ports has been filled
+ in.
+**/
+RETURN_STATUS
+EFIAPI
+FdtSerialGetPorts (
+ IN CONST VOID *DeviceTree,
+ IN CONST CHAR8 *Compatible,
+ OUT FDT_SERIAL_PORTS *Ports
+ );
+
+/**
+ Fetch the base address of the serial port identified in the "stdout-path"
+ property of the "/chosen" node in DeviceTree.
+
+ @param[in] DeviceTree The flat device tree (FDT) to scan.
+
+ @param[out] BaseAddress On success, the base address of the preferred serial
+ port (to be used as console). On error, BaseAddress
+ is not modified.
+
+ @retval RETURN_INVALID_PARAMETER DeviceTree does not point to a valid FDT
+ header.
+
+ @retval RETURN_NOT_FOUND No enabled console port has been found.
+
+ @retval RETURN_PROTOCOL_ERROR The first (or only) node path in the
+ "stdout-path" property is an empty string.
+
+ @retval RETURN_PROTOCOL_ERROR The console port has been found in the FDT,
+ but its base address is not correctly
+ represented.
+
+ @retval RETURN_SUCCESS BaseAddress has been populated.
+**/
+RETURN_STATUS
+EFIAPI
+FdtSerialGetConsolePort (
+ IN CONST VOID *DeviceTree,
+ OUT UINT64 *BaseAddress
+ );
+
+#endif
|