BCM2708: Add some build configuration and support logic for low-level serial otput (unfinished)
This commit is contained in:
Gregory Nutt
parent
851fa7ba85
commit
d160ae8a32
@ -16,7 +16,163 @@ config ARCH_CHIP_BCM2835
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endchoice # BCM2708 Configuration Option
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menuconfig BCM2708_GPIO_IRQ
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menu "BCM2708 Peripheral Selections"
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config BCM2708_MINI_UART
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bool "Mini-UART"
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config BCM2708_PL011_UART
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bool "PL011UART"
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endmenu # BCM2708 Peripheral Selections
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menu "BCM2708 UART Configuration"
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depends on BCM2708_MINI_UART || BCM2708_PL011_UART
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menu "BCM2708 Mini-UART Configuration"
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depends on BCM2708_MINI_UART
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config BCM2708_MINI_UART_RXBUFSIZE
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int "Receive buffer size"
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default 256
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---help---
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Characters are buffered as they are received. This specifies
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the size of the receive buffer.
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config BCM2708_MINI_UART_TXBUFSIZE
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int "Transmit buffer size"
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default 256
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---help---
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Characters are buffered before being sent. This specifies
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the size of the transmit buffer.
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config BCM2708_MINI_UART_BAUD
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int "BAUD rate"
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default 115200
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---help---
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The configured BAUD of the UART.
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config BCM2708_MINI_UART_BITS
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int "Character size"
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default 8
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---help---
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The number of bits. Must be either 7 or 8.
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config BCM2708_MINI_UART_PARITY
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int "Parity setting"
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range 0 2
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default 0
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---help---
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0=no parity, 1=odd parity, 2=even parity
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config BCM2708_MINI_UART_2STOP
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int "use 2 stop bits"
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default 0
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---help---
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1=Two stop bits
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config BCM2708_MINI_UART_IFLOWCONTROL
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bool "Mini-UART RTS flow control"
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default n
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select SERIAL_IFLOWCONTROL
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---help---
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Enable BCM2708_MINI_UART RTS flow control
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config BCM2708_MINI_UART_OFLOWCONTROL
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bool "Mini-UART CTS flow control"
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default n
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select SERIAL_OFLOWCONTROL
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---help---
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Enable BCM2708_MINI_UART CTS flow control
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endmenu # BCM2708 Mini-UART Configuration
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menu "BCM2708 PL011 UART Configuration"
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depends on BCM2708_PL011_UART
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config BCM2708_PL011_UART_RXBUFSIZE
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int "Receive buffer size"
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default 256
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---help---
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Characters are buffered as they are received. This specifies
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the size of the receive buffer.
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config BCM2708_PL011_UART_TXBUFSIZE
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int "Transmit buffer size"
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default 256
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---help---
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Characters are buffered before being sent. This specifies
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the size of the transmit buffer.
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config BCM2708_PL011_UART_BAUD
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int "BAUD rate"
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default 115200
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---help---
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The configured BAUD of the UART.
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config BCM2708_PL011_UART_BITS
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int "Character size"
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default 8
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---help---
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The number of bits. Must be either 7 or 8.
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config BCM2708_PL011_UART_PARITY
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int "Parity setting"
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range 0 2
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default 0
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---help---
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0=no parity, 1=odd parity, 2=even parity
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config BCM2708_PL011_UART_2STOP
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int "use 2 stop bits"
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default 0
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---help---
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1=Two stop bits
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config BCM2708_PL011_UART_IFLOWCONTROL
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bool "UART RTS flow control"
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default n
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select SERIAL_IFLOWCONTROL
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---help---
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Enable UART RTS flow control. CD, DSR, DTR, and RI are not supported.
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config BCM2708_PL011_UART_OFLOWCONTROL
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bool "UART CTS flow control"
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default n
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select SERIAL_OFLOWCONTROL
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---help---
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Enable UART CTS flow control. CD, DSR, DTR, and RI are not supported.
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endmenu # BCM2708 PL011 UART Configuration
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choice
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prompt "BCM2708 Serial Console"
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default BCM2708_NO_SERIAL_CONSOLE
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depends on DEV_CONSOLE
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config BCM2708_MINI_UART_SERIAL_CONSOLE
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bool "Use Mini-UART as the serial console"
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depends on BCM2708_MINI_UART
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select OTHER_SERIAL_CONSOLE
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---help---
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Use the Mini-UART as the serial console
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config BCM2708_PL011_UART_SERIAL_CONSOLE
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bool "Use PO011 UART as the serial console"
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depends on BCM2708_PL011_UART
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select OTHER_SERIAL_CONSOLE
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---help---
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Use the PO011 UART as the serial console
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config BCM2708_NO_SERIAL_CONSOLE
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bool "No serial console"
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---help---
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No serial based console
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endchoice # BCM2708 Serial Console
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endmenu # BCM2708 UART Configuration
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config BCM2708_GPIO_IRQ
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bool "GPIO pin interrupts"
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---help---
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Enable support for interrupting GPIO pins
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@ -72,7 +72,7 @@ endif
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# BCM2708-specific source files.
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CHIP_CSRCS = bcm_boot.c bcm_memorymap.c bcm_clockconfig.c bcm_irq.c
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CHIP_CSRCS += bcm_tickless.c bcm_gpio.c
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CHIP_CSRCS += bcm_tickless.c bcm_gpio.c bcm_lowputc.c
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ifeq ($(CONFIG_BCM2708_GPIO_IRQ),y)
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CHIP_CSRCS += bcm_gpioint.c
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@ -46,10 +46,34 @@
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration **********************************************************/
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/* Configuration ************************************************************/
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/* Is there a UART enabled? */
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/* Is there a UART enabled? The BCM2835 device has two UARTS. On mini UART
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* and and PL011 UART.
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*/
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/* Is there a serial console? */
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#if defined(CONFIG_BCM2708_MINI_UART) || defined(CONFIG_BCM2708_PL011_UART)
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# define BCM_HAVE_UART
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#endif
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#undef SUPPRESS_CONSOLE_CONFIG
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#ifdef CONFIG_SUPPRESS_UART_CONFIG
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# define SUPPRESS_CONSOLE_CONFIG 1
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#endif
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/* Is there a serial console? It could be on UART1-5 */
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#if defined(CONFIG_BCM2708_MINI_UART_SERIAL_CONSOLE) && defined(CONFIG_BCM2708_MINI_UART)
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# undef CONFIG_BCM2708_PL011_UART_SERIAL_CONSOLE
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# define BCM_HAVE_UART_CONSOLE 1
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#elif defined(CONFIG_BCM2708_PL011_UART_SERIAL_CONSOLE) && defined(CONFIG_BCM2708_PL011_UART)
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# undef CONFIG_BCM2708_MINI_UART_SERIAL_CONSOLE
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# define BCM_HAVE_UART_CONSOLE 1
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#else
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# warning "No valid serial console Setting"
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# undef CONFIG_BCM2708_MINI_UART_SERIAL_CONSOLE
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# undef CONFIG_BCM2708_PL011_UART_SERIAL_CONSOLE
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# undef BCM_HAVE_UART_CONSOLE
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#endif
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#endif /* __ARCH_ARM_SRC_BCM2708_BCM_CONFIG_H */
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168
arch/arm/src/bcm2708/bcm_lowputc.c
Normal file
168
arch/arm/src/bcm2708/bcm_lowputc.c
Normal file
@ -0,0 +1,168 @@
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/****************************************************************************
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* arch/arm/src/bcm2708/bcm_lowputc.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <assert.h>
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#include "up_arch.h"
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#include "chip/bcm2708_uart_spi.h"
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#include "bcm_config.h"
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#include "bcm_lowputc.h"
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#include "up_internal.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#ifdef BCM_HAVE_UART_CONSOLE
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# if defined(CONFIG_BCM2708_MINI_UART_SERIAL_CONSOLE)
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# define BCM_CONSOLE_VBASE BCM_AUX_OFFSET
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# define BCM_CONSOLE_BAUD CONFIG_BCM2708_MINI_UART_BAUD
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# define BCM_CONSOLE_BITS CONFIG_BCM2708_MINI_UART_BITS
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# define BCM_CONSOLE_PARITY CONFIG_BCM2708_MINI_UART_PARITY
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# define BCM_CONSOLE_2STOP CONFIG_BCM2708_MINI_UART_2STOP
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# elif defined(CONFIG_BCM2708_PL011_UART_SERIAL_CONSOLE)
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# define BCM_CONSOLE_VBASE BCM_PL011_VBASE
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# define BCM_CONSOLE_BAUD CONFIG_BCM2708_PL011_UART_BAUD
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# define BCM_CONSOLE_BITS CONFIG_BCM2708_PL011_UART_BITS
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# define BCM_CONSOLE_PARITY CONFIG_BCM2708_PL011_UART_PARITY
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# define BCM_CONSOLE_2STOP CONFIG_BCM2708_PL011_UART_2STOP
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# endif
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#ifdef BCM_HAVE_UART_CONSOLE
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static const struct uart_config_s g_console_config =
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{
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.baud = BCM_CONSOLE_BAUD, /* Configured baud */
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.parity = BCM_CONSOLE_PARITY, /* 0=none, 1=odd, 2=even */
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.bits = BCM_CONSOLE_BITS, /* Number of bits (5-9) */
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.stopbits2 = BCM_CONSOLE_2STOP, /* true: Configure with 2 stop bits instead of 1 */
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};
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: bcm_lowsetup
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*
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* Description:
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* Called at the very beginning of _start. Performs low level
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* initialization including setup of the console UART. This UART done
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* early so that the serial console is available for debugging very early
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* in the boot sequence.
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*
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****************************************************************************/
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void bcm_lowsetup(void)
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{
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#ifndef CONFIG_SUPPRESS_UART_CONFIG
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#ifdef CONFIG_BCM2708_MINI_UART
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/* Disable and configure the Mini-UART */
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# warning Missing logic
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/* Configure Mini-pins: RXD and TXD. Also configure RTS and CTS if flow
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* control is enabled.
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*/
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# warning Missing logic
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#endif
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#ifdef CONFIG_BCM2708_PL011_UART
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/* Disable and configure the PL011 UART */
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# warning Missing logic
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/* Configure PL001 pins: RXD and TXD. Also configure RTS and CTS if flow
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* control is enabled.
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*/
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# warning Missing logic
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#endif
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#ifdef BCM_HAVE_UART_CONSOLE
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/* Configure the serial console for initial, non-interrupt driver mode */
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(void)bcm_uart_configure(BCM_CONSOLE_VBASE, &g_console_config);
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#endif
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#endif /* CONFIG_SUPPRESS_UART_CONFIG */
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}
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/************************************************************************************
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* Name: bcm_uart_configure
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*
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* Description:
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* Configure a UART for non-interrupt driven operation
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*
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************************************************************************************/
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#ifdef BCM_HAVE_UART
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int bcm_uart_configure(uint32_t base, FAR const struct uart_config_s *config)
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{
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#ifndef CONFIG_SUPPRESS_UART_CONFIG
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# warning Missing logic
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#endif
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return OK;
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}
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#endif /* BCM_HAVE_UART */
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/************************************************************************************
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* Name: bcm_lowputc
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*
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* Description:
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* Output a byte with as few system dependencies as possible. This will even work
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* BEFORE the console is initialized if we are booting from U-Boot (and the same
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* UART is used for the console, of course.)
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*
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************************************************************************************/
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#if defined(BCM_HAVE_UART) && defined(CONFIG_DEBUG_FEATURES)
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void bcm_lowputc(int ch)
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{
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#warning Missing logic
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}
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#endif
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@ -54,7 +54,7 @@
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* Public Types
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****************************************************************************/
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#ifdef IMX_HAVE_UART
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#ifdef BCM_HAVE_UART
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/* This structure describes the configuration of an UART */
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struct uart_config_s
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@ -91,7 +91,7 @@ void bcm_lowsetup(void);
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*
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****************************************************************************/
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#ifdef IMX_HAVE_UART
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#ifdef BCM_HAVE_UART
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int bcm_uart_configure(uint32_t base, FAR const struct uart_config_s *config);
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#endif
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@ -105,7 +105,7 @@ int bcm_uart_configure(uint32_t base, FAR const struct uart_config_s *config);
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*
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************************************************************************************/
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#if defined(IMX_HAVE_UART) && defined(CONFIG_DEBUG_FEATURES)
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#if defined(BCM_HAVE_UART) && defined(CONFIG_DEBUG_FEATURES)
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void bcm_lowputc(int ch);
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#else
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# define bcm_lowputc(ch)
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@ -33,8 +33,8 @@
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_BCM2708_IMX_MEMORYMAP_H
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#define __ARCH_ARM_SRC_BCM2708_IMX_MEMORYMAP_H
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#ifndef __ARCH_ARM_SRC_BCM2708_BCM_MEMORYMAP_H
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#define __ARCH_ARM_SRC_BCM2708_BCM_MEMORYMAP_H
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/****************************************************************************
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* Included Files
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@ -73,4 +73,4 @@ struct section_mapping_s
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extern const struct section_mapping_s g_section_mapping[];
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extern const size_t g_num_mappings;
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#endif /* __ARCH_ARM_SRC_BCM2708_IMX_MEMORYMAP_H */
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#endif /* __ARCH_ARM_SRC_BCM2708_BCM_MEMORYMAP_H */
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@ -100,7 +100,7 @@ void bcm_earlyserialinit(void);
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*
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****************************************************************************/
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#if defined(USE_EARLYSERIALINIT) && defined(IMX6_HAVE_UART)
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#if defined(USE_EARLYSERIALINIT) && defined(BCM6_HAVE_UART)
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void uart_earlyserialinit(void);
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#endif
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@ -113,7 +113,7 @@ void uart_earlyserialinit(void);
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*
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****************************************************************************/
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#ifdef IMX6_HAVE_UART
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#ifdef BCM6_HAVE_UART
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void uart_serialinit(void);
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#endif
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@ -66,14 +66,14 @@
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#define BCM_PCM_CLK_OFFSET 0x00101098 /* PCM Clock */
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#define BCM_RNG_OFFSET 0x00104000 /* Hardware RNG */
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#define BCM_GPIO_OFFSET 0x00200000 /* GPIO peripheral */
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#define BCM_UART0_OFFSET 0x00201000 /* UART0 peripheral */
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#define BCM_PL011_OFFSET 0x00201000 /* PL011 UART peripheral */
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#define BCM_MMCI0_OFFSET 0x00202000 /* MMC0 peripheral */
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#define BCM_I2S_OFFSET 0x00203000 /* PCM/I2S audio interface */
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#define BCM_SPI0_OFFSET 0x00204000 /* Serial interface peripheral */
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#define BCM_BSC0_OFFSET 0x00205000 /* Broadcom Serial Controller 0 (BSC0) */
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#define BCM_PWM_OFFSET 0x0020c000 /* Pulse Width Modulator interface */
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#define BCM_BSCSPI_OFFSET 0x00214000 /* BSC/SPI peripheral */
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#define BCM_UART1_OFFSET 0x00215000 /* UART1 peripheral */
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#define BCM_AUX_OFFSET 0x00215000 /* AUX/Mini-UART/SPI peripherals */
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#define BCM_EMMC_OFFSET 0x00300000 /* External Mass Media Controller */
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#define BCM_SMI_OFFSET 0x00600000 /* SMI */
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#define BCM_BSC1_OFFSET 0x00804000 /* Broadcom Serial Controller 1 (BSC1) */
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@ -128,14 +128,14 @@
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#define BCM_PCM_CLK_VBASE (BCM_PERIPH_VSECTION + BCM_PCM_CLK_OFFSET)
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#define BCM_RNG_VBASE (BCM_PERIPH_VSECTION + BCM_RNG_OFFSET)
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#define BCM_GPIO_VBASE (BCM_PERIPH_VSECTION + BCM_GPIO_OFFSET)
|
||||
#define BCM_UART0_VBASE (BCM_PERIPH_VSECTION + BCM_UART0_OFFSET)
|
||||
#define BCM_PL011_VBASE (BCM_PERIPH_VSECTION + BCM_PL011_OFFSET)
|
||||
#define BCM_MMCI0_VBASE (BCM_PERIPH_VSECTION + BCM_MMCI0_OFFSET)
|
||||
#define BCM_I2S_VBASE (BCM_PERIPH_VSECTION + BCM_I2S_OFFSET)
|
||||
#define BCM_SPI0_VBASE (BCM_PERIPH_VSECTION + BCM_SPI0_OFFSET)
|
||||
#define BCM_BSC0_VBASE (BCM_PERIPH_VSECTION + BCM_BSC0_OFFSET)
|
||||
#define BCM_PWM_VBASE (BCM_PERIPH_VSECTION + BCM_PWM_OFFSET)
|
||||
#define BCM_BSCSPI_VBASE (BCM_PERIPH_VSECTION + BCM_BSCSPI_OFFSET)
|
||||
#define BCM_UART1_VBASE (BCM_PERIPH_VSECTION + BCM_UART1_OFFSET)
|
||||
#define BCM_AUX_VBASE (BCM_PERIPH_VSECTION + BCM_AUX_OFFSET)
|
||||
#define BCM_EMMC_VBASE (BCM_PERIPH_VSECTION + BCM_EMMC_OFFSET)
|
||||
#define BCM_SMI_VBASE (BCM_PERIPH_VSECTION + BCM_SMI_OFFSET)
|
||||
#define BCM_BSC1_VBASE (BCM_PERIPH_VSECTION + BCM_BSC1_OFFSET)
|
||||
|
||||
@ -9,6 +9,8 @@ CONFIG_ARCH_CHIP_BCM2835=y
|
||||
CONFIG_ARCH_LOWVECTORS=y
|
||||
CONFIG_ARCH_STACKDUMP=y
|
||||
CONFIG_ARCH="arm"
|
||||
CONFIG_BCM2708_MINI_UART_SERIAL_CONSOLE=y
|
||||
CONFIG_BCM2708_MINI_UART=y
|
||||
CONFIG_BOARD_LOOPSPERMSEC=16717
|
||||
CONFIG_BOOT_RUNFROMSDRAM=y
|
||||
CONFIG_BUILTIN=y
|
||||
|
||||
Loading…
Reference in New Issue
Block a user