Vishal Bhoj | 82c8071 | 2015-12-15 21:13:33 +0530 | [diff] [blame] | 1 | /** @file
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| 2 | Basic serial IO abstaction for GDB
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| 3 |
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| 4 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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| 5 |
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| 6 | This program and the accompanying materials
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| 7 | are licensed and made available under the terms and conditions of the BSD License
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| 8 | which accompanies this distribution. The full text of the license may be found at
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| 9 | http://opensource.org/licenses/bsd-license.php
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| 10 |
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| 11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 13 |
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| 14 | **/
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| 15 |
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| 16 | #include <Uefi.h>
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| 17 | #include <Library/GdbSerialLib.h>
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| 18 | #include <Library/PcdLib.h>
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| 19 | #include <Library/IoLib.h>
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| 20 | #include <Library/DebugLib.h>
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| 21 | #include <Library/OmapLib.h>
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| 22 | #include <Omap3530/Omap3530.h>
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| 23 |
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| 24 | RETURN_STATUS
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| 25 | EFIAPI
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| 26 | GdbSerialLibConstructor (
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| 27 | VOID
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| 28 | )
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| 29 | {
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| 30 | return RETURN_SUCCESS;
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| 31 | }
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| 32 |
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| 33 | RETURN_STATUS
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| 34 | EFIAPI
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| 35 | GdbSerialInit (
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| 36 | IN UINT64 BaudRate,
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| 37 | IN UINT8 Parity,
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| 38 | IN UINT8 DataBits,
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| 39 | IN UINT8 StopBits
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| 40 | )
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| 41 | {
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| 42 | return RETURN_SUCCESS;
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| 43 | }
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| 44 |
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| 45 | BOOLEAN
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| 46 | EFIAPI
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| 47 | GdbIsCharAvailable (
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| 48 | VOID
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| 49 | )
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| 50 | {
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| 51 | UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
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| 52 |
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| 53 | if ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_NOT_EMPTY) {
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| 54 | return TRUE;
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| 55 | } else {
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| 56 | return FALSE;
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | CHAR8
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| 61 | EFIAPI
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| 62 | GdbGetChar (
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| 63 | VOID
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| 64 | )
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| 65 | {
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| 66 | UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
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| 67 | UINT32 RBR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_RBR_REG;
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| 68 | CHAR8 Char;
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| 69 |
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| 70 | while ((MmioRead8(LSR) & UART_LSR_RX_FIFO_E_MASK) == UART_LSR_RX_FIFO_E_EMPTY);
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| 71 | Char = MmioRead8(RBR);
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| 72 |
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| 73 | return Char;
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| 74 | }
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| 75 |
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| 76 | VOID
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| 77 | EFIAPI
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| 78 | GdbPutChar (
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| 79 | IN CHAR8 Char
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| 80 | )
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| 81 | {
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| 82 | UINT32 LSR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_LSR_REG;
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| 83 | UINT32 THR = UartBase(PcdGet32(PcdOmap35xxConsoleUart)) + UART_THR_REG;
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| 84 |
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| 85 | while ((MmioRead8(LSR) & UART_LSR_TX_FIFO_E_MASK) == UART_LSR_TX_FIFO_E_NOT_EMPTY);
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| 86 | MmioWrite8(THR, Char);
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| 87 | }
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| 88 |
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| 89 | VOID
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| 90 | GdbPutString (
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| 91 | IN CHAR8 *String
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| 92 | )
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| 93 | {
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| 94 | while (*String != '\0') {
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| 95 | GdbPutChar (*String);
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| 96 | String++;
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| 97 | }
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| 98 | }
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| 99 |
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| 100 |
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| 101 |
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| 102 |
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