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-rw-r--r--src/commonlib/include/commonlib/coreboot_tables.h15
-rw-r--r--src/drivers/uart/Kconfig17
-rw-r--r--src/drivers/uart/oxpcie_early.c5
-rw-r--r--src/drivers/uart/pl011.c5
-rw-r--r--src/drivers/uart/uart8250io.c5
-rw-r--r--src/drivers/uart/uart8250mem.c5
-rw-r--r--src/lib/coreboot_table.c2
7 files changed, 54 insertions, 0 deletions
diff --git a/src/commonlib/include/commonlib/coreboot_tables.h b/src/commonlib/include/commonlib/coreboot_tables.h
index 5c28791594..7d58fddbb9 100644
--- a/src/commonlib/include/commonlib/coreboot_tables.h
+++ b/src/commonlib/include/commonlib/coreboot_tables.h
@@ -173,6 +173,21 @@ struct lb_serial {
uint32_t baseaddr;
uint32_t baud;
uint32_t regwidth;
+
+ /* Crystal or input frequency to the chip containing the UART.
+ * Provide the board specific details to allow the payload to
+ * initialize the chip containing the UART and make independent
+ * decisions as to which dividers to select and their values
+ * to eventually arrive at the desired console baud-rate. */
+ uint32_t input_hertz;
+
+ /* UART PCI address: bus, device, function
+ * 1 << 31 - Valid bit, PCI UART in use
+ * Bus << 20
+ * Device << 15
+ * Function << 12
+ */
+ uint32_t uart_pci_addr;
};
#define LB_TAG_CONSOLE 0x0010
diff --git a/src/drivers/uart/Kconfig b/src/drivers/uart/Kconfig
index f4ad011933..ae3e81adb1 100644
--- a/src/drivers/uart/Kconfig
+++ b/src/drivers/uart/Kconfig
@@ -41,3 +41,20 @@ config DRIVERS_UART_PL011
bool
default n
select HAVE_UART_SPECIAL
+
+config UART_USE_REFCLK_AS_INPUT_CLOCK
+ bool
+ default n
+ help
+ Use uart_platform_refclk to specify the input clock value.
+
+config UART_PCI_ADDR
+ hex "UART's PCI bus, device, function address"
+ default 0
+ help
+ Specify zero if the UART is connected to another bus type.
+ For PCI based UARTs, build the value as:
+ * 1 << 31 - Valid bit, PCI UART in use
+ * Bus << 20
+ * Device << 15
+ * Function << 12
diff --git a/src/drivers/uart/oxpcie_early.c b/src/drivers/uart/oxpcie_early.c
index eb91d31154..6582a9e5ab 100644
--- a/src/drivers/uart/oxpcie_early.c
+++ b/src/drivers/uart/oxpcie_early.c
@@ -92,6 +92,11 @@ void uart_fill_lb(void *data)
serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
serial.baud = default_baudrate();
serial.regwidth = 1;
+ if (IS_ENABLED(CONFIG_UART_USE_REFCLK_AS_INPUT_CLOCK))
+ serial.input_hertz = uart_platform_refclk();
+ else
+ serial.input_hertz = 0;
+ serial.uart_pci_addr = CONFIG_UART_PCI_ADDR;
lb_add_serial(&serial, data);
lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/drivers/uart/pl011.c b/src/drivers/uart/pl011.c
index aa55c682a6..808cb46538 100644
--- a/src/drivers/uart/pl011.c
+++ b/src/drivers/uart/pl011.c
@@ -48,6 +48,11 @@ void uart_fill_lb(void *data)
serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
serial.baud = default_baudrate();
serial.regwidth = 1;
+ if (IS_ENABLED(CONFIG_UART_USE_REFCLK_AS_INPUT_CLOCK))
+ serial.input_hertz = uart_platform_refclk();
+ else
+ serial.input_hertz = 0;
+ serial.uart_pci_addr = CONFIG_UART_PCI_ADDR;
lb_add_serial(&serial, data);
lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/drivers/uart/uart8250io.c b/src/drivers/uart/uart8250io.c
index 63bc42fccc..0974005a81 100644
--- a/src/drivers/uart/uart8250io.c
+++ b/src/drivers/uart/uart8250io.c
@@ -139,6 +139,11 @@ void uart_fill_lb(void *data)
serial.baseaddr = uart_platform_base(CONFIG_UART_FOR_CONSOLE);
serial.baud = default_baudrate();
serial.regwidth = 1;
+ if (IS_ENABLED(CONFIG_UART_USE_REFCLK_AS_INPUT_CLOCK))
+ serial.input_hertz = uart_platform_refclk();
+ else
+ serial.input_hertz = 0;
+ serial.uart_pci_addr = CONFIG_UART_PCI_ADDR;
lb_add_serial(&serial, data);
lb_add_console(LB_TAG_CONSOLE_SERIAL8250, data);
diff --git a/src/drivers/uart/uart8250mem.c b/src/drivers/uart/uart8250mem.c
index 278ddb8ebb..2f2bd2df56 100644
--- a/src/drivers/uart/uart8250mem.c
+++ b/src/drivers/uart/uart8250mem.c
@@ -156,6 +156,11 @@ void uart_fill_lb(void *data)
serial.regwidth = sizeof(uint32_t);
else
serial.regwidth = sizeof(uint8_t);
+ if (IS_ENABLED(CONFIG_UART_USE_REFCLK_AS_INPUT_CLOCK))
+ serial.input_hertz = uart_platform_refclk();
+ else
+ serial.input_hertz = 0;
+ serial.uart_pci_addr = CONFIG_UART_PCI_ADDR;
lb_add_serial(&serial, data);
lb_add_console(LB_TAG_CONSOLE_SERIAL8250MEM, data);
diff --git a/src/lib/coreboot_table.c b/src/lib/coreboot_table.c
index 4dbac1930d..3af2be6c9a 100644
--- a/src/lib/coreboot_table.c
+++ b/src/lib/coreboot_table.c
@@ -119,6 +119,8 @@ void lb_add_serial(struct lb_serial *new_serial, void *data)
serial->baseaddr = new_serial->baseaddr;
serial->baud = new_serial->baud;
serial->regwidth = new_serial->regwidth;
+ serial->input_hertz = new_serial->input_hertz;
+ serial->uart_pci_addr = new_serial->uart_pci_addr;
}
void lb_add_console(uint16_t consoletype, void *data)