diff options
| author | Julien Viard de Galbert <jviarddegalbert@online.net> | 2018-02-20 11:45:48 +0100 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-02-21 16:09:06 +0000 |
| commit | 235daa4bf6b6467b5df675dcfe5041b7f62eeae3 (patch) | |
| tree | 074bc4b58e2da4c7f6fb43c5e7613b08861d5d33 /src/drivers/uart | |
| parent | fa650f5e8c7cd81138b60d09d4a41b5454f03cc1 (diff) | |
| download | coreboot-235daa4bf6b6467b5df675dcfe5041b7f62eeae3.tar.xz | |
driver/uart: Introduce a way for mainboard to override the baudrate
The rationale is to allow the mainboard to override the default
baudrate for instance by sampling GPIOs at boot.
A new configuration option is available for mainboards to select
this behaviour. It will then have to define the function
get_uart_baudrate to return the computed baudrate.
Change-Id: I970ee788bf90b9e1a8c6ccdc5eee8029d9af0ecc
Signed-off-by: Julien Viard de Galbert <jviarddegalbert@online.net>
Reviewed-on: https://review.coreboot.org/23713
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/drivers/uart')
| -rw-r--r-- | src/drivers/uart/pl011.c | 2 | ||||
| -rw-r--r-- | src/drivers/uart/uart8250io.c | 4 | ||||
| -rw-r--r-- | src/drivers/uart/uart8250mem.c | 4 |
3 files changed, 5 insertions, 5 deletions
diff --git a/src/drivers/uart/pl011.c b/src/drivers/uart/pl011.c index e690a9afb5..415dce13bc 100644 --- a/src/drivers/uart/pl011.c +++ b/src/drivers/uart/pl011.c @@ -51,7 +51,7 @@ void uart_fill_lb(void *data) struct lb_serial serial; serial.type = LB_SERIAL_TYPE_MEMORY_MAPPED; serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE); - serial.baud = CONFIG_TTYS0_BAUD; + serial.baud = get_uart_baudrate(); serial.regwidth = 1; serial.input_hertz = uart_platform_refclk(); serial.uart_pci_addr = CONFIG_UART_PCI_ADDR; diff --git a/src/drivers/uart/uart8250io.c b/src/drivers/uart/uart8250io.c index ace2c59fd5..94970f9c7d 100644 --- a/src/drivers/uart/uart8250io.c +++ b/src/drivers/uart/uart8250io.c @@ -107,7 +107,7 @@ void uart_init(int idx) { if (!IS_ENABLED(CONFIG_DRIVERS_UART_8250IO_SKIP_INIT)) { unsigned int div; - div = uart_baudrate_divisor(CONFIG_TTYS0_BAUD, + div = uart_baudrate_divisor(get_uart_baudrate(), uart_platform_refclk(), uart_input_clock_divider()); uart8250_init(uart_platform_base(idx), div); } @@ -134,7 +134,7 @@ void uart_fill_lb(void *data) struct lb_serial serial; serial.type = LB_SERIAL_TYPE_IO_MAPPED; serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE); - serial.baud = CONFIG_TTYS0_BAUD; + serial.baud = get_uart_baudrate(); serial.regwidth = 1; serial.input_hertz = uart_platform_refclk(); serial.uart_pci_addr = CONFIG_UART_PCI_ADDR; diff --git a/src/drivers/uart/uart8250mem.c b/src/drivers/uart/uart8250mem.c index 9eb50cb4b1..b73a428b9b 100644 --- a/src/drivers/uart/uart8250mem.c +++ b/src/drivers/uart/uart8250mem.c @@ -119,7 +119,7 @@ void uart_init(int idx) return; unsigned int div; - div = uart_baudrate_divisor(CONFIG_TTYS0_BAUD, + div = uart_baudrate_divisor(get_uart_baudrate(), uart_platform_refclk(), uart_input_clock_divider()); uart8250_mem_init(base, div); } @@ -156,7 +156,7 @@ void uart_fill_lb(void *data) serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE); if (!serial.baseaddr) return; - serial.baud = CONFIG_TTYS0_BAUD; + serial.baud = get_uart_baudrate(); if (IS_ENABLED(CONFIG_DRIVERS_UART_8250MEM_32)) serial.regwidth = sizeof(uint32_t); else |