void sam_lowsetup(void)
{
/* Enable clocking for all selected UART/USARTs */
#ifdef CONFIG_SAM34_UART0
sam_uart0_enableclk();
#endif
#ifdef CONFIG_SAM34_UART1
sam_uart1_enableclk();
#endif
#ifdef CONFIG_SAM34_USART0
sam_usart0_enableclk();
#endif
#ifdef CONFIG_SAM34_USART1
sam_usart1_enableclk();
#endif
#ifdef CONFIG_SAM34_USART2
sam_usart2_enableclk();
#endif
#ifdef CONFIG_SAM34_USART3
sam_usart3_enableclk();
#endif
/* Configure UART pins for all selected UART/USARTs */
#ifdef CONFIG_SAM34_UART0
(void)sam_configgpio(GPIO_UART0_RXD);
(void)sam_configgpio(GPIO_UART0_TXD);
#endif
#ifdef CONFIG_SAM34_UART1
(void)sam_configgpio(GPIO_UART1_RXD);
(void)sam_configgpio(GPIO_UART1_TXD);
#endif
#ifdef CONFIG_SAM34_USART0
(void)sam_configgpio(GPIO_USART0_RXD);
(void)sam_configgpio(GPIO_USART0_TXD);
#ifdef CONFIG_USART0_OFLOWCONTROL
(void)sam_configgpio(GPIO_USART0_CTS);
#endif
#ifdef CONFIG_USART0_IFLOWCONTROL
(void)sam_configgpio(GPIO_USART0_RTS);
#endif
#endif
#ifdef CONFIG_SAM34_USART1
(void)sam_configgpio(GPIO_USART1_RXD);
(void)sam_configgpio(GPIO_USART1_TXD);
#ifdef CONFIG_USART1_OFLOWCONTROL
(void)sam_configgpio(GPIO_USART1_CTS);
#endif
#ifdef CONFIG_USART1_IFLOWCONTROL
(void)sam_configgpio(GPIO_USART1_RTS);
#endif
#endif
#ifdef CONFIG_SAM34_USART2
(void)sam_configgpio(GPIO_USART2_RXD);
(void)sam_configgpio(GPIO_USART2_TXD);
#ifdef CONFIG_USART2_OFLOWCONTROL
(void)sam_configgpio(GPIO_USART2_CTS);
#endif
#ifdef CONFIG_USART2_IFLOWCONTROL
(void)sam_configgpio(GPIO_USART2_RTS);
#endif
#endif
#ifdef CONFIG_SAM34_USART3
(void)sam_configgpio(GPIO_USART3_RXD);
(void)sam_configgpio(GPIO_USART3_TXD);
#ifdef CONFIG_USART3_OFLOWCONTROL
(void)sam_configgpio(GPIO_USART3_CTS);
#endif
#ifdef CONFIG_USART3_IFLOWCONTROL
(void)sam_configgpio(GPIO_USART3_RTS);
#endif
#endif
/* Configure the console (only) */
#if defined(HAVE_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG)
/* Reset and disable receiver and transmitter */
putreg32((UART_CR_RSTRX | UART_CR_RSTTX | UART_CR_RXDIS | UART_CR_TXDIS),
SAM_CONSOLE_BASE + SAM_UART_CR_OFFSET);
/* Disable all interrupts */
putreg32(0xffffffff, SAM_CONSOLE_BASE + SAM_UART_IDR_OFFSET);
/* Set up the mode register */
putreg32(MR_VALUE, SAM_CONSOLE_BASE + SAM_UART_MR_OFFSET);
/* Configure the console baud. NOTE: Oversampling by 8 is not supported.
* This may limit BAUD rates for lower USART clocks.
*/
putreg32(((SAM_USART_CLOCK + (SAM_CONSOLE_BAUD << 3)) / (SAM_CONSOLE_BAUD << 4)),
SAM_CONSOLE_BASE + SAM_UART_BRGR_OFFSET);
/* Enable receiver & transmitter */
putreg32((UART_CR_RXEN | UART_CR_TXEN),
SAM_CONSOLE_BASE + SAM_UART_CR_OFFSET);
#endif
}
void sam_lowsetup(void)
{
/* Enable clocking for all selected UART/USARTs (USARTs may not
* necessarily be configured as UARTs).
*/
#ifdef CONFIG_SAMA5_UART0
sam_uart0_enableclk();
#endif
#ifdef CONFIG_SAMA5_UART1
sam_uart1_enableclk();
#endif
#ifdef CONFIG_SAMA5_UART2
sam_uart2_enableclk();
#endif
#ifdef CONFIG_SAMA5_UART3
sam_uart3_enableclk();
#endif
#ifdef CONFIG_SAMA5_UART4
sam_uart4_enableclk();
#endif
#ifdef CONFIG_USART0_SERIALDRIVER
sam_usart0_enableclk();
#endif
#ifdef CONFIG_SAMA5_USART1
sam_usart1_enableclk();
#endif
#ifdef CONFIG_SAMA5_USART2
sam_usart2_enableclk();
#endif
#ifdef CONFIG_SAMA5_USART3
sam_usart3_enableclk();
#endif
#ifdef CONFIG_SAMA5_FLEXCOM0
sam_flexcom0_enableclk();
#endif
#ifdef CONFIG_SAMA5_FLEXCOM1
sam_flexcom1_enableclk();
#endif
#ifdef CONFIG_SAMA5_FLEXCOM2
sam_flexcom2_enableclk();
#endif
#ifdef CONFIG_SAMA5_FLEXCOM3
sam_flexcom3_enableclk();
#endif
#ifdef CONFIG_SAMA5_FLEXCOM4
sam_flexcom4_enableclk();
#endif
/* Configure UART pins for all selected UART/USARTs. USARTs pins are
* only configured if the USART is also configured as as a UART.
*/
#ifdef CONFIG_SAMA5_UART0
(void)sam_configpio(PIO_UART0_RXD);
(void)sam_configpio(PIO_UART0_TXD);
#endif
#ifdef CONFIG_SAMA5_UART1
(void)sam_configpio(PIO_UART1_RXD);
(void)sam_configpio(PIO_UART1_TXD);
#endif
#ifdef CONFIG_SAMA5_UART2
(void)sam_configpio(PIO_UART2_RXD);
(void)sam_configpio(PIO_UART2_TXD);
#endif
#ifdef CONFIG_SAMA5_UART3
(void)sam_configpio(PIO_UART3_RXD);
(void)sam_configpio(PIO_UART3_TXD);
#endif
#ifdef CONFIG_SAMA5_UART4
(void)sam_configpio(PIO_UART4_RXD);
(void)sam_configpio(PIO_UART4_TXD);
#endif
#if defined(CONFIG_USART0_SERIALDRIVER) && defined(CONFIG_SAMA5_USART0)
(void)sam_configpio(PIO_USART0_RXD);
(void)sam_configpio(PIO_USART0_TXD);
#ifdef CONFIG_USART0_OFLOWCONTROL
(void)sam_configpio(PIO_USART0_CTS);
#endif
#ifdef CONFIG_USART0_IFLOWCONTROL
(void)sam_configpio(PIO_USART0_RTS);
#endif
#endif
#if defined(CONFIG_USART1_SERIALDRIVER) && defined(CONFIG_SAMA5_USART1)
(void)sam_configpio(PIO_USART1_RXD);
(void)sam_configpio(PIO_USART1_TXD);
#ifdef CONFIG_USART1_OFLOWCONTROL
(void)sam_configpio(PIO_USART1_CTS);
#endif
#ifdef CONFIG_USART1_IFLOWCONTROL
(void)sam_configpio(PIO_USART1_RTS);
#endif
#endif
#if defined(CONFIG_USART2_SERIALDRIVER) && defined(CONFIG_SAMA5_USART2)
(void)sam_configpio(PIO_USART2_RXD);
(void)sam_configpio(PIO_USART2_TXD);
#ifdef CONFIG_USART2_OFLOWCONTROL
(void)sam_configpio(PIO_USART2_CTS);
#endif
#ifdef CONFIG_USART2_IFLOWCONTROL
(void)sam_configpio(PIO_USART2_RTS);
#endif
#endif
#if defined(CONFIG_USART3_SERIALDRIVER) && defined(CONFIG_SAMA5_USART3)
(void)sam_configpio(PIO_USART3_RXD);
(void)sam_configpio(PIO_USART3_TXD);
#ifdef CONFIG_USART3_OFLOWCONTROL
(void)sam_configpio(PIO_USART3_CTS);
#endif
#ifdef CONFIG_USART3_IFLOWCONTROL
(void)sam_configpio(PIO_USART3_RTS);
#endif
#endif
#if defined(CONFIG_USART4_SERIALDRIVER) && defined(CONFIG_SAMA5_USART4)
(void)sam_configpio(PIO_USART4_RXD);
(void)sam_configpio(PIO_USART4_TXD);
#ifdef CONFIG_USART4_OFLOWCONTROL
(void)sam_configpio(PIO_USART4_CTS);
#endif
#ifdef CONFIG_USART4_IFLOWCONTROL
(void)sam_configpio(PIO_USART4_RTS);
#endif
#endif
/* For Flexcom USARTs:
*
* FLEXCOM_IO0 = TXD
* FLEXCOM_IO1 = RXD
* FLEXCOM_IO2 = SCK
* FLEXCOM_IO3 = CTS
* FLEXCOM_IO4 = RTS
*/
#if defined(CONFIG_USART0_SERIALDRIVER) && defined(CONFIG_SAMA5_FLEXCOM0_USART)
(void)sam_configpio(PIO_FLEXCOM0_IO0);
(void)sam_configpio(PIO_FLEXCOM0_IO1);
#ifdef CONFIG_USART0_OFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM0_IO3);
#endif
#ifdef CONFIG_USART0_IFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM0_IO4);
#endif
#endif
#if defined(CONFIG_USART1_SERIALDRIVER) && defined(CONFIG_SAMA5_FLEXCOM1_USART)
(void)sam_configpio(PIO_FLEXCOM1_IO0);
(void)sam_configpio(PIO_FLEXCOM1_IO1);
#ifdef CONFIG_USART1_OFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM1_IO3);
#endif
#ifdef CONFIG_USART1_IFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM1_IO4);
#endif
#endif
#if defined(CONFIG_USART2_SERIALDRIVER) && defined(CONFIG_SAMA5_FLEXCOM2_USART)
(void)sam_configpio(PIO_FLEXCOM2_IO0);
(void)sam_configpio(PIO_FLEXCOM2_IO1);
#ifdef CONFIG_USART2_OFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM2_IO3);
#endif
#ifdef CONFIG_USART2_IFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM2_IO4);
#endif
#endif
#if defined(CONFIG_USART3_SERIALDRIVER) && defined(CONFIG_SAMA5_FLEXCOM3_USART)
(void)sam_configpio(PIO_FLEXCOM3_IO0);
(void)sam_configpio(PIO_FLEXCOM3_IO1);
#ifdef CONFIG_USART3_OFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM3_IO3);
#endif
#ifdef CONFIG_USART3_IFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM3_IO4);
#endif
#endif
#if defined(CONFIG_USART4_SERIALDRIVER) && defined(CONFIG_SAMA5_FLEXCOM4_USART)
(void)sam_configpio(PIO_FLEXCOM4_IO0);
(void)sam_configpio(PIO_FLEXCOM4_IO1);
#ifdef CONFIG_USART4_OFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM4_IO3);
#endif
#ifdef CONFIG_USART4_IFLOWCONTROL
(void)sam_configpio(PIO_FLEXCOM4_IO4);
#endif
#endif
/* Configure the console (only) */
#if (defined(SAMA5_HAVE_UART_CONSOLE) || defined(SAMA5_HAVE_USART_CONSOLE)) && \
!defined(SUPPRESS_CONSOLE_CONFIG)
/* Reset and disable receiver and transmitter */
putreg32((UART_CR_RSTRX | UART_CR_RSTTX | UART_CR_RXDIS | UART_CR_TXDIS),
SAM_CONSOLE_VBASE + SAM_UART_CR_OFFSET);
/* Disable all interrupts */
putreg32(0xffffffff, SAM_CONSOLE_VBASE + SAM_UART_IDR_OFFSET);
/* Set up the mode register */
putreg32(MR_VALUE, SAM_CONSOLE_VBASE + SAM_UART_MR_OFFSET);
/* Configure the console baud. NOTE: Oversampling by 8 is not supported.
* This may limit BAUD rates for lower USART clocks.
*/
putreg32(((SAM_USART_CLOCK + (SAM_CONSOLE_BAUD << 3)) / (SAM_CONSOLE_BAUD << 4)),
SAM_CONSOLE_VBASE + SAM_UART_BRGR_OFFSET);
/* Enable receiver & transmitter */
putreg32((UART_CR_RXEN | UART_CR_TXEN),
SAM_CONSOLE_VBASE + SAM_UART_CR_OFFSET);
#elif defined(SAMA5_HAVE_FLEXCOM_CONSOLE) && !defined(SUPPRESS_CONSOLE_CONFIG)
/* Select USART mode for the Flexcom */
putreg32(FLEX_MR_OPMODE_USART, SAM_CONSOLE_VBASE + SAM_FLEX_MR_OFFSET);
/* Reset and disable receiver and transmitter */
putreg32((FLEXUS_CR_RSTRX | FLEXUS_CR_RSTTX | FLEXUS_CR_RXDIS | FLEXUS_CR_TXDIS),
SAM_CONSOLE_VBASE + SAM_FLEXUS_CR_OFFSET);
/* Disable all interrupts */
putreg32(0xffffffff, SAM_CONSOLE_VBASE + SAM_FLEXUS_IDR_OFFSET);
/* Set up the mode register */
putreg32(MR_VALUE, SAM_CONSOLE_VBASE + SAM_FLEXUS_MR_OFFSET);
/* Configure the console baud. NOTE: Oversampling by 8 is not supported.
* This may limit BAUD rates for lower USART clocks.
*/
putreg32(((SAM_USART_CLOCK + (SAM_CONSOLE_BAUD << 3)) / (SAM_CONSOLE_BAUD << 4)),
SAM_CONSOLE_VBASE + SAM_FLEXUS_BRGR_OFFSET);
/* Enable receiver & transmitter */
putreg32((FLEXUS_CR_RXEN | FLEXUS_CR_TXEN),
SAM_CONSOLE_VBASE + SAM_FLEXUS_CR_OFFSET);
#endif
#ifdef CONFIG_SAMA5_DBGU
/* Initialize the DBGU (might be the serial console) */
sam_dbgu_initialize();
#endif
}
