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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-02-24 20:51:30 +0200 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2014-04-09 11:13:03 +0200 |
| commit | c2610a4a186c6e5a05f6518c2c7a734fde8f6cfd (patch) | |
| tree | 21af900856344ac5a21ff6eca474d54fd7de97ac /src/cpu/ti/am335x/uart.c | |
| parent | e5760af3980ea4c55afd7e759e8ca2a078a4a1dc (diff) | |
| download | coreboot-c2610a4a186c6e5a05f6518c2c7a734fde8f6cfd.tar.xz | |
uart: Prepare to support multiple base addresses
Prepare low-level register access to take UART base address as a
parameter. This is done to support a list of base addresses defined
in the platform.
Change-Id: Ie630e55f2562f099b0ba9eb94b08c92d26dfdf2e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5309
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Diffstat (limited to 'src/cpu/ti/am335x/uart.c')
| -rw-r--r-- | src/cpu/ti/am335x/uart.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/cpu/ti/am335x/uart.c b/src/cpu/ti/am335x/uart.c index 27051ea2cc..09bb96ece3 100644 --- a/src/cpu/ti/am335x/uart.c +++ b/src/cpu/ti/am335x/uart.c @@ -35,10 +35,8 @@ * Initialise the serial port with the given baudrate divisor. The settings * are always 8 data bits, no parity, 1 stop bit, no start bits. */ -static void am335x_uart_init(uint16_t div) +static void am335x_uart_init(struct am335x_uart *uart, uint16_t div) { - struct am335x_uart *uart = (struct am335x_uart *) - CONFIG_CONSOLE_SERIAL_UART_ADDRESS; uint16_t lcr_orig, efr_orig, mcr_orig; /* reset the UART */ @@ -131,11 +129,8 @@ static void am335x_uart_init(uint16_t div) * otherwise. When the function is successful, the character read is * written into its argument c. */ -static unsigned char am335x_uart_rx_byte(void) +static unsigned char am335x_uart_rx_byte(struct am335x_uart *uart) { - struct am335x_uart *uart = - (struct am335x_uart *)CONFIG_CONSOLE_SERIAL_UART_ADDRESS; - while (!(read16(&uart->lsr) & LSR_RXFIFOE)); return read8(&uart->rhr); @@ -144,11 +139,8 @@ static unsigned char am335x_uart_rx_byte(void) /* * Output a single byte to the serial port. */ -static void am335x_uart_tx_byte(unsigned char data) +static void am335x_uart_tx_byte(struct am335x_uart *uart, unsigned char data) { - struct am335x_uart *uart = - (struct am335x_uart *)CONFIG_CONSOLE_SERIAL_UART_ADDRESS; - while (!(read16(&uart->lsr) & LSR_TXFIFOE)); return write8(data, &uart->thr); @@ -159,28 +151,36 @@ unsigned int uart_platform_refclk(void) return 48000000; } +unsigned int uart_platform_base(int idx) +{ + return CONFIG_CONSOLE_SERIAL_UART_ADDRESS; +} + #if !defined(__PRE_RAM__) uint32_t uartmem_getbaseaddr(void) { - return CONFIG_CONSOLE_SERIAL_UART_ADDRESS; + return uart_platform_base(0); } #endif void uart_init(void) { + struct am335x_uart *uart = uart_platform_baseptr(0); uint16_t div = (uint16_t) uart_baudrate_divisor( default_baudrate(), uart_platform_refclk(), 16); - am335x_uart_init(div); + am335x_uart_init(uart, div); } unsigned char uart_rx_byte(void) { - return am335x_uart_rx_byte(); + struct am335x_uart *uart = uart_platform_baseptr(0); + return am335x_uart_rx_byte(uart); } void uart_tx_byte(unsigned char data) { - am335x_uart_tx_byte(data); + struct am335x_uart *uart = uart_platform_baseptr(0); + am335x_uart_tx_byte(uart, data); } void uart_tx_flush(void) |