diff options
Diffstat (limited to 'OvmfPkg/Library/QemuFwCfgLib')
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S | 22 | ||||
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm | 24 | ||||
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c | 51 | ||||
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.S | 19 | ||||
| -rw-r--r-- | OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm | 22 |
5 files changed, 133 insertions, 5 deletions
diff --git a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S index a32b2c60c4..c2735d2c65 100644 --- a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S +++ b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.S @@ -1,6 +1,6 @@ #------------------------------------------------------------------------------
#
-# Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -30,3 +30,23 @@ rep insb popl %edi
ret
+
+#------------------------------------------------------------------------------
+# VOID
+# EFIAPI
+# IoWriteFifo8 (
+# IN UINTN Port,
+# IN UINTN Size,
+# IN VOID *Buffer
+# );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoWriteFifo8)
+ASM_PFX(IoWriteFifo8):
+ movw 4(%esp), %dx
+ movl 8(%esp), %ecx
+ pushl %esi
+ movl 16(%esp), %esi
+rep outsb
+ popl %esi
+ ret
+
diff --git a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm index 248d52237e..f7d65c49af 100644 --- a/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm +++ b/OvmfPkg/Library/QemuFwCfgLib/Ia32/IoLibExAsm.asm @@ -1,6 +1,6 @@ ;------------------------------------------------------------------------------
;
-; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+; Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
@@ -36,5 +36,27 @@ rep insb IoReadFifo8 ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; IoWriteFifo8 (
+; IN UINTN Port,
+; IN UINTN Size,
+; IN VOID *Buffer
+; );
+;------------------------------------------------------------------------------
+IoWriteFifo8 PROC
+
+ mov dx, [esp + 4]
+ mov ecx, [esp + 8]
+ push esi
+ mov esi, [esp + 16]
+rep outsb
+ pop esi
+ ret
+
+IoWriteFifo8 ENDP
+
END
diff --git a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c index 8caab42e8b..7e5ea00bf9 100644 --- a/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c +++ b/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgLib.c @@ -1,6 +1,6 @@ /** @file
- Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -50,6 +50,32 @@ IoReadFifo8 ( OUT VOID *Buffer
);
+/**
+ Writes an 8-bit I/O port fifo from a block of memory.
+
+ Writes the 8-bit I/O fifo port specified by Port.
+
+ The port is written Count times, and the data are obtained
+ from the provided Buffer.
+
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 8-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+ @param Count The number of times to read I/O port.
+ @param Buffer The buffer to store the read data into.
+
+**/
+VOID
+EFIAPI
+IoWriteFifo8 (
+ IN UINTN Port,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
/**
Returns a boolean indicating if the firmware configuration interface
@@ -132,6 +158,29 @@ QemuFwCfgReadBytes ( }
}
+/**
+ Write firmware configuration bytes from a buffer
+
+ If called multiple times, then the data written will
+ continue at the offset of the firmware configuration
+ item where the previous write ended.
+
+ @param[in] Size - Size in bytes to write
+ @param[in] Buffer - Buffer to read data from
+
+**/
+VOID
+EFIAPI
+QemuFwCfgWriteBytes (
+ IN UINTN Size,
+ IN VOID *Buffer
+ )
+{
+ if (mQemuFwCfgSupported) {
+ IoWriteFifo8 (0x511, Size, Buffer);
+ }
+}
+
/**
Reads a UINT8 firmware configuration value
diff --git a/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.S b/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.S index b1125ed7da..69167b7081 100644 --- a/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.S +++ b/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.S @@ -1,6 +1,6 @@ #------------------------------------------------------------------------------
#
-# Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
@@ -28,3 +28,20 @@ rep insb mov %r8, %rdi # restore rdi
ret
+#------------------------------------------------------------------------------
+# VOID
+# EFIAPI
+# IoWriteFifo8 (
+# IN UINTN Port, // rcx
+# IN UINTN Size, // rdx
+# IN VOID *Buffer // r8
+# );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(IoWriteFifo8)
+ASM_PFX(IoWriteFifo8):
+ xchg %rcx, %rdx
+ xchg %r8, %rsi # rdi: buffer address; r8: save rsi
+rep outsb
+ mov %r8, %rsi # restore rsi
+ ret
+
diff --git a/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm b/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm index c60ad2c5d4..47ac158f85 100644 --- a/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm +++ b/OvmfPkg/Library/QemuFwCfgLib/X64/IoLibExAsm.asm @@ -1,6 +1,6 @@ ;------------------------------------------------------------------------------
;
-; Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
+; Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
; This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
@@ -32,5 +32,25 @@ rep insb IoReadFifo8 ENDP
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; IoWriteFifo8 (
+; IN UINTN Port, // rcx
+; IN UINTN Size, // rdx
+; IN VOID *Buffer // r8
+; );
+;------------------------------------------------------------------------------
+IoWriteFifo8 PROC
+
+ xchg rcx, rdx
+ xchg rsi, r8 ; rdi: buffer address; r8: save rdi
+rep outsb
+ mov rsi, r8 ; restore rdi
+ ret
+
+IoWriteFifo8 ENDP
+
END
|