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authorJulien Viard de Galbert <jviarddegalbert@online.net>2018-02-20 11:45:48 +0100
committerMartin Roth <martinroth@google.com>2018-02-21 16:09:06 +0000
commit235daa4bf6b6467b5df675dcfe5041b7f62eeae3 (patch)
tree074bc4b58e2da4c7f6fb43c5e7613b08861d5d33 /src/drivers
parentfa650f5e8c7cd81138b60d09d4a41b5454f03cc1 (diff)
downloadcoreboot-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')
-rw-r--r--src/drivers/uart/pl011.c2
-rw-r--r--src/drivers/uart/uart8250io.c4
-rw-r--r--src/drivers/uart/uart8250mem.c4
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