diff options
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/Kconfig | 21 | ||||
| -rw-r--r-- | drivers/serial/sandbox.c | 24 | ||||
| -rw-r--r-- | drivers/serial/serial-uclass.c | 4 |
3 files changed, 48 insertions, 1 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 5fa27254e3..597db4b9cb 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -53,6 +53,16 @@ config SPL_SERIAL_PRESENT This option enables the full UART in SPL, so if is it disabled, the full UART driver will be omitted, thus saving space. +config TPL_SERIAL_PRESENT + bool "Provide a serial driver in TPL" + depends on DM_SERIAL + default y + help + In very space-constrained devices even the full UART driver is too + large. In this case the debug UART can still be used in some cases. + This option enables the full UART in TPL, so if is it disabled, + the full UART driver will be omitted, thus saving space. + # Logic to allow us to use the imply keyword to set what the default port # should be. The default is otherwise 1. config CONS_INDEX_0 @@ -324,6 +334,15 @@ config DEBUG_UART_MXC will need to provide parameters to make this work. The driver will be available until the real driver model serial is running. +config DEBUG_UART_SANDBOX + bool "sandbox" + depends on SANDBOX_SERIAL + help + Select this to enable the debug UART using the sandbox driver. This + provides basic serial output from the console without needing to + start up driver model. The driver will be available until the real + driver model serial is running. + config DEBUG_UART_STM32 bool "STMicroelectronics STM32" depends on STM32_SERIAL @@ -354,6 +373,7 @@ endchoice config DEBUG_UART_BASE hex "Base address of UART" depends on DEBUG_UART + default 0 if DEBUG_UART_SANDBOX help This is the base address of your UART for memory-mapped UARTs. @@ -363,6 +383,7 @@ config DEBUG_UART_BASE config DEBUG_UART_CLOCK int "UART input clock" depends on DEBUG_UART + default 0 if DEBUG_UART_SANDBOX help The UART input clock determines the speed of the internal UART circuitry. The baud rate is derived from this by dividing the input diff --git a/drivers/serial/sandbox.c b/drivers/serial/sandbox.c index 94b4fdfb17..4a05ea44ce 100644 --- a/drivers/serial/sandbox.c +++ b/drivers/serial/sandbox.c @@ -22,6 +22,8 @@ DECLARE_GLOBAL_DATA_PTR; +#if CONFIG_IS_ENABLED(OF_CONTROL) + /* * * serial_buf: A buffer that holds keyboard characters for the @@ -124,7 +126,7 @@ static int sandbox_serial_pending(struct udevice *dev, bool input) if (next_index == serial_buf_read) return 1; /* buffer full */ - count = os_read_no_block(0, &serial_buf[serial_buf_write], 1); + count = os_read(0, &serial_buf[serial_buf_write], 1); if (count == 1) serial_buf_write = next_index; @@ -142,6 +144,24 @@ static int sandbox_serial_getc(struct udevice *dev) serial_buf_read = increment_buffer_index(serial_buf_read); return result; } +#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */ + +#ifdef CONFIG_DEBUG_UART_SANDBOX + +#include <debug_uart.h> + +static inline void _debug_uart_init(void) +{ +} + +static inline void _debug_uart_putc(int ch) +{ + os_putc(ch); +} + +DEBUG_UART_FUNCS + +#endif /* CONFIG_DEBUG_UART_SANDBOX */ static int sandbox_serial_setconfig(struct udevice *dev, uint serial_config) { @@ -156,6 +176,7 @@ static int sandbox_serial_setconfig(struct udevice *dev, uint serial_config) return 0; } +#if CONFIG_IS_ENABLED(OF_CONTROL) static const char * const ansi_colour[] = { "black", "red", "green", "yellow", "blue", "megenta", "cyan", "white", @@ -215,3 +236,4 @@ U_BOOT_DEVICE(serial_sandbox_non_fdt) = { .name = "serial_sandbox", .platdata = &platdata_non_fdt, }; +#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */ diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c index ffdcae0931..e50f0aa851 100644 --- a/drivers/serial/serial-uclass.c +++ b/drivers/serial/serial-uclass.c @@ -26,6 +26,7 @@ static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; #error "Serial is required before relocation - define CONFIG_$(SPL_)SYS_MALLOC_F_LEN to make this work" #endif +#if CONFIG_IS_ENABLED(SERIAL_PRESENT) static int serial_check_stdout(const void *blob, struct udevice **devp) { int node; @@ -150,12 +151,15 @@ static void serial_find_console_or_panic(void) panic_str("No serial driver found"); #endif } +#endif /* CONFIG_SERIAL_PRESENT */ /* Called prior to relocation */ int serial_init(void) { +#if CONFIG_IS_ENABLED(SERIAL_PRESENT) serial_find_console_or_panic(); gd->flags |= GD_FLG_SERIAL_READY; +#endif return 0; } |