a6caee65ac
The PcdStandalone is a PCD ARM Ltd uses to make the difference between a standalone UEFI (boot from cold boot to Boot Manager without user intervention) and a Debug UEFI firmware (the firmware engineer has to copy the Normale World image into the DRAM to enable his/her firmware). By coping the firmware into DRAM in the non standalone version it is much faster than reflashing the NOR Flash after each build. ArmPlatformSecExtraAction() function is called just before the Sec module jump to normal world. The platform firmware can run extra actions at this stage. The 'ARM Standalone' concept has moved to the implementation of ArmPlatformSecExtraAction() for the ARM development boards (in ArmPlatformPkg/Library/DebugSecExtraActionLib). ArmPlatformPkg: Enable DebugAgentLib in Sec and PrePeiCore ArmPlatformPkg: Fix line endings in some source files Use CR+LF line endings as defined by the EDK2 coding convention git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11991 6f19259b-4bc3-4df7-8a09-765794883524
119 lines
2.5 KiB
C
119 lines
2.5 KiB
C
/** @file
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Basic serial IO abstaction for GDB
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Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <Library/GdbSerialLib.h>
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#include <Library/PcdLib.h>
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#include <Library/IoLib.h>
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#include <Drivers/PL011Uart.h>
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RETURN_STATUS
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EFIAPI
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GdbSerialLibConstructor (
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VOID
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)
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{
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return GdbSerialInit (115200, 0, 8, 1);
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}
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RETURN_STATUS
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EFIAPI
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GdbSerialInit (
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IN UINT64 BaudRate,
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IN UINT8 Parity,
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IN UINT8 DataBits,
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IN UINT8 StopBits
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)
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{
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if ((Parity != 0) || (DataBits != 8) || (StopBits != 1)) {
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return RETURN_UNSUPPORTED;
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}
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if (BaudRate != 115200) {
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// Could add support for different Baud rates....
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return RETURN_UNSUPPORTED;
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}
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UINT32 Base = PcdGet32 (PcdGdbUartBase);
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// initialize baud rate generator to 115200 based on EB clock REFCLK24MHZ
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MmioWrite32 (Base + UARTIBRD, UART_115200_IDIV);
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MmioWrite32 (Base + UARTFBRD, UART_115200_FDIV);
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// no parity, 1 stop, no fifo, 8 data bits
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MmioWrite32 (Base + UARTLCR_H, 0x60);
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// clear any pending errors
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MmioWrite32 (Base + UARTECR, 0);
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// enable tx, rx, and uart overall
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MmioWrite32 (Base + UARTCR, 0x301);
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return RETURN_SUCCESS;
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}
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BOOLEAN
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EFIAPI
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GdbIsCharAvailable (
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VOID
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)
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{
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UINT32 FR = PcdGet32 (PcdGdbUartBase) + UARTFR;
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if ((MmioRead32 (FR) & UART_RX_EMPTY_FLAG_MASK) == 0) {
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return TRUE;
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} else {
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return FALSE;
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}
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}
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CHAR8
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EFIAPI
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GdbGetChar (
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VOID
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)
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{
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UINT32 FR = PcdGet32 (PcdGdbUartBase) + UARTFR;
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UINT32 DR = PcdGet32 (PcdGdbUartBase) + UARTDR;
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while ((MmioRead32 (FR) & UART_RX_EMPTY_FLAG_MASK) == 0);
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return MmioRead8 (DR);
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}
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VOID
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EFIAPI
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GdbPutChar (
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IN CHAR8 Char
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)
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{
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UINT32 FR = PcdGet32 (PcdGdbUartBase) + UARTFR;
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UINT32 DR = PcdGet32 (PcdGdbUartBase) + UARTDR;
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while ((MmioRead32 (FR) & UART_TX_EMPTY_FLAG_MASK) != 0);
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MmioWrite8 (DR, Char);
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return;
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}
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VOID
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GdbPutString (
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IN CHAR8 *String
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)
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{
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while (*String != '\0') {
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GdbPutChar (*String);
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String++;
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}
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}
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