X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=ArmEbPkg%2FInclude%2FArmEb%2FArmEbUart.h;fp=ArmEbPkg%2FInclude%2FArmEb%2FArmEbUart.h;h=642b83ac4c5161cac76ec3f90018fa429ea77213;hp=0000000000000000000000000000000000000000;hb=b76848cbeba962133377266a9121b58ebba9e6f3;hpb=f0c855b26386c16ba0a70600d72cd09c090db0e0

diff --git a/ArmEbPkg/Include/ArmEb/ArmEbUart.h b/ArmEbPkg/Include/ArmEb/ArmEbUart.h
new file mode 100755
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+++ b/ArmEbPkg/Include/ArmEb/ArmEbUart.h
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+/*++
+
+Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+Portions copyright (c) 2009, Hewlett-Packard Company. All rights reserved.<BR>
+Portions copyright (c) 2010, Apple Inc. 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        
+http://opensource.org/licenses/bsd-license.php                                            
+                                                                                          
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.  
+
+--*/
+
+#ifndef __ARM_EB_UART_H__
+#define __ARM_EB_UART_H__
+
+
+#define SERIAL_PORT_MAX_TIMEOUT            100000000    // 100 seconds
+
+
+// EB constants
+#define EB_UART1_BASE   0x10009000
+
+// PL011 Registers
+#define UARTDR          0x000
+#define UARTRSR         0x004
+#define UARTECR         0x004
+#define UARTFR          0x018
+#define UARTILPR        0x020
+#define UARTIBRD        0x024
+#define UARTFBRD        0x028
+#define UARTLCR_H       0x02C
+#define UARTCR          0x030
+#define UARTIFLS        0x034
+#define UARTIMSC        0x038
+#define UARTRIS         0x03C
+#define UARTMIS         0x040
+#define UARTICR         0x044
+#define UARTDMACR       0x048
+
+// If the required baud rate is 115200 and UARTCLK = 24MHz then:
+// Baud Rate Divisor = (24×10^6)/(16×115200) = 13.020833
+// This means BRDI = 13 and BRDF = 0.020833
+// Therefore, fractional part, m = integer(0.020833×64) = integer(1.33331) = 1
+// Generated baud rate divider = 13+1/64 = 13.015625
+// Generated baud rate = (24×10^6)/(16×13.015625) = 115246.098
+// Error = (115246.098-115200)/115200 × 100 = 0.04%
+#define UART_115200_IDIV    13
+#define UART_115200_FDIV    1
+
+// add more baud rates here as needed
+
+// data status bits
+#define UART_DATA_ERROR_MASK      0x0F00
+
+// status reg bits
+#define UART_STATUS_ERROR_MASK    0x0F
+
+// flag reg bits
+#define UART_TX_EMPTY_FLAG_MASK   0x80
+#define UART_RX_FULL_FLAG_MASK    0x40
+#define UART_TX_FULL_FLAG_MASK    0x20
+#define UART_RX_EMPTY_FLAG_MASK   0x10
+#define UART_BUSY_FLAG_MASK       0x08
+
+// control reg bits
+#define UART_CTSEN_CONTROL_MASK   0x8000
+#define UART_RTSEN_CONTROL_MASK   0x4000
+#define UART_RTS_CONTROL_MASK     0x0800
+#define UART_DTR_CONTROL_MASK     0x0400
+
+
+#endif