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ArmPlatformPkg/PL011Uart: Create PL011 UART driver

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This library makes the interface with the PL011 UART controller.
This library can be linked to different types of driver (Serial Console,
debugger, etc) using PL011 UART controller.


ArmPlatformPkg/PL011SerialPortLib: Use Drivers/PL011Uart

Remove the direct accesses to the PL011 UART controller to use the PL011Uart
library.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11743 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2011-06-03 09:31:02 +00:00
parent f0a7a8ce23
commit 9dcfb8e5c8
8 changed files with 295 additions and 56 deletions
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57
ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.c
View File

@@ -15,9 +15,13 @@
**/
#include <Include/Uefi.h>
#include <Library/SerialPortLib.h>
#include <Library/IoLib.h>
#include <Library/PcdLib.h>
#include <Library/SerialPortLib.h>
#include <Drivers/PL011Uart.h>
#include <ArmPlatform.h>
/*
@@ -33,32 +37,11 @@ SerialPortInitialize (
VOID
)
{
if (PL011_CONSOLE_UART_SPEED == 115200) {
// Initialize baud rate generator
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTIBRD, UART_115200_IDIV);
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTFBRD, UART_115200_FDIV);
} else if (PL011_CONSOLE_UART_SPEED == 38400) {
// Initialize baud rate generator
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTIBRD, UART_38400_IDIV);
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTFBRD, UART_38400_FDIV);
} else if (PL011_CONSOLE_UART_SPEED == 19200) {
// Initialize baud rate generator
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTIBRD, UART_19200_IDIV);
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTFBRD, UART_19200_FDIV);
} else {
return EFI_INVALID_PARAMETER;
}
// No parity, 1 stop, no fifo, 8 data bits
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTLCR_H, 0x60);
// Clear any pending errors
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTECR, 0);
// enable tx, rx, and uart overall
MmioWrite32 (PL011_CONSOLE_UART_BASE + UARTCR, 0x301);
return EFI_SUCCESS;
return PL011UartInitialize (
(UINTN)PcdGet64 (PcdSerialRegisterBase),
(UINTN)PcdGet64 (PcdUartDefaultBaudRate),
PL011_UARTLCR_H_WLEN_8);
}
/**
@@ -76,16 +59,9 @@ EFIAPI
SerialPortWrite (
IN UINT8 *Buffer,
IN UINTN NumberOfBytes
)
)
{
UINTN Count;
for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) {
while ((MmioRead32 (PL011_CONSOLE_UART_BASE + UARTFR) & UART_TX_EMPTY_FLAG_MASK) == 0);
MmioWrite8 (PL011_CONSOLE_UART_BASE + UARTDR, *Buffer);
}
return NumberOfBytes;
return PL011UartWrite ((UINTN)PcdGet64 (PcdSerialRegisterBase), Buffer, NumberOfBytes);
}
/**
@@ -105,14 +81,7 @@ SerialPortRead (
IN UINTN NumberOfBytes
)
{
UINTN Count;
for (Count = 0; Count < NumberOfBytes; Count++, Buffer++) {
while ((MmioRead32 (PL011_CONSOLE_UART_BASE + UARTFR) & UART_RX_EMPTY_FLAG_MASK) != 0);
*Buffer = MmioRead8 (PL011_CONSOLE_UART_BASE + UARTDR);
}
return NumberOfBytes;
return PL011UartRead ((UINTN)PcdGet64 (PcdSerialRegisterBase), Buffer, NumberOfBytes);
}
/**
@@ -129,5 +98,5 @@ SerialPortPoll (
VOID
)
{
return ((MmioRead32 (PL011_CONSOLE_UART_BASE + UARTFR) & UART_RX_EMPTY_FLAG_MASK) == 0);
return PL011UartPoll ((UINTN)PcdGet64 (PcdSerialRegisterBase));
}

10
ArmPlatformPkg/Library/PL011SerialPortLib/PL011SerialPortLib.inf
View File

@@ -2,7 +2,7 @@
#
# Component discription file for NorFlashDxe module
#
# Copyright (c) 2010, ARM Ltd. All rights reserved.<BR>
# Copyright (c) 2011, ARM Ltd. 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
@@ -25,8 +25,14 @@
PL011SerialPortLib.c
[LibraryClasses]
IoLib
PL011UartLib
PcdLib
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
ArmPlatformPkg/ArmPlatformPkg.dec
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdSerialRegisterBase
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate