opensbi.git/lib/utils/serial/fdt_serial.c, branch master

lib: utils/serial: Use fdt_driver for initialization

2024-11-28T12:22:58Z

The serial driver subsystem does not need any extra data, so it can use `struct fdt_driver` directly. The generic fdt_serial_init() first attempts to match the chosen stdout device, and upon failure matches the first available serial device in the DT. It is a fatal error if no such device is found. This matches the behavior of fdt_driver_init_one(). Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

treewide: Make carray arrays const and NULL-terminated

2024-11-28T11:39:17Z

This allows the compiler to generate significantly better code, because it does not have to maintain either the loop counter or loop limit. Plus there are half as many symbols to relocate. This also simplifies passing carray arrays to helper functions. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/serial: Pass the FDT to fdt_serial_init()

2024-08-24T07:33:01Z

Indicate that this function does not modify the FDT blob, and deduplicate the call to fdt_get_address(). Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: utils/serial: Constify FDT pointers in parsing functions

2024-08-24T07:32:46Z

Indicate that none of these functions modify the devicetree by constifying the parameter type. Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: utils/serial: Fix fdt_serial to match more dt nodes

2024-06-13T13:09:37Z

If there are multiple dt nodes, the previous code only tries to match the first one, which may lose initialization. Signed-off-by: Xiang W Reviewed-by: Anup Patel

lib: utils/serial: Skip initialize serial when dt is not enabled

2024-06-13T13:06:49Z

When the dt node has a status property and the value is not ok or okay, skip initializing serial. Signed-off-by: Xiang W Reviewed-by: Anup Patel

lib: utils: Improve fdt_serial_init

2023-05-26T07:07:25Z

A final check of all DT nodes does not necessarily find a match, so SBI_ENODEV needs to be returned. Optimize removal of current_driver. Signed-off-by: Xiang W Reviewed-by: Anup Patel

lib: utils/serial: Generate FDT serial driver list at compile-time

2022-05-13T03:56:13Z

Instead of having FDT serial driver list hard-coded in the C source, we generate it using carray.sh at compile-time. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils: serial: Initial commit of xlnx-uartlite

2022-02-28T04:20:09Z

Initial commit of the xlnx-uartlite device and FDT support. This was tested by running OpenSBI on a modified QEMU virt machine using the xlnx-uartlite for serial. Signed-off-by: Alistair Francis Reviewed-by: Xiang W Reviewed-by: Anup Patel

lib: utils: Add LiteX UART support

2021-11-18T07:52:02Z

Add support for the UART provided by the LiteX SoC framework (https://github.com/enjoy-digital/litex), based on its FDT info (described in the Linux tree at Documentation/devicetree/bindings/serial/litex,liteuart.yaml). Signed-off-by: Gabriel Somlo Reviewed-by: Xiang W Reviewed-by: Anup Patel