Commit Graph

14 Commits

Author SHA1 Message Date
Xiang W
86bbe6c52f lib: utils/serial: Fix fdt_serial to match more dt nodes
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 <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-13 18:39:37 +05:30
Xiang W
179e00a320 lib: utils/serial: Skip initialize serial when dt is not enabled
When the dt node has a status property and the value is not ok or
okay, skip initializing serial.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2024-06-13 18:36:49 +05:30
Xiang W
264d0be1fd lib: utils: Improve fdt_serial_init
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 <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2023-05-26 12:37:25 +05:30
Anup Patel
1e62705adc lib: utils/serial: Generate FDT serial driver list at compile-time
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 <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
2022-05-13 09:26:13 +05:30
Alistair Francis
4998a712b2 lib: utils: serial: Initial commit of xlnx-uartlite
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 <alistair.francis@wdc.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
2022-02-28 09:50:09 +05:30
Gabriel Somlo
52af6e4b52 lib: utils: Add LiteX UART support
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 <gsomlo@gmail.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-11-18 13:22:02 +05:30
Alexandre Ghiti
c891acca17 include: sbi_utils: Introduce an helper to get fdt base address
This simply adds an helper to get fdt address which is more explicit than
sbi_scratch_thishart_arg1_ptr.

Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
2021-11-02 11:23:16 +05:30
Heinrich Schuchardt
66c4fca532 lib: utils: consider ':' in stdout-path
The value of the /chosen/stdout-path devicetree property is used to
determine the UART used by openSBI. According to the devicetree
specification the value may contain a hyphen, e.g.

	chosen {
                stdout-path = "/serial@f00:115200";
        };

If the character ':' is present, it terminates the path of the device.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
2021-06-02 17:06:17 +05:30
Anup Patel
54d7def6c2 lib: utils: Try other FDT drivers when we see SBI_ENODEV
We should try other FDT drivers when we see SBI_ENODEV returned
by cold_init() of FDT driver.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Xiang W <wxjstz@126.com>
2021-05-24 15:49:21 +05:30
Daniel Cederman
117fb6dcb1 lib: utils/serial: Add support for Gaisler APBUART
This patch adds support for the UART used by the NOEL-V processor.

Cobham Gaisler's NOEL-V RISC-V processor IP is available under GPL
and commercial license and is described in more detail at
https://www.gaisler.com/noelv.

Signed-off-by: Daniel Cederman <cederman@gaisler.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2021-05-06 14:21:07 +05:30
Anup Patel
068ca086af lib: sbi: Simplify console platform operations
Instead of having console_putc() and console_getc() callbacks in
platform operations, it will be much simpler for console driver to
directly register these operations as device to the sbi_console
implementation.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Xiang W <wxjstz@126.com>
2021-04-28 16:58:23 +05:30
Vijai Kumar K
db56ef367c platform: Add support for Shakti C-class SoC from IIT-M
C-Class is a member of the SHAKTI family of processors from Indian
Institute of Technology - Madras(IIT-M).
It is an extremely configurable and commercial-grade 5-stage in-order
core supporting the standard RV64GCSUN ISA extensions.

https://gitlab.com/shaktiproject/cores/c-class/blob/master/README.md

We add OpenSBI support for Shakti C-class SoC.

Signed-off-by: Vijai Kumar K <vijai@behindbytes.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
2020-06-19 09:21:46 +05:30
Anup Patel
2c685c214f lib: utils: Extend fdt_find_match() Implementation
We extend fdt_find_match() implementation by adding node offset
parameter which represents the first node to match from.

The improved fdt_find_match() can be used to find multiple
match nodes.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-23 10:36:33 +05:30
Anup Patel
76a89403c8 lib: utils: Add simple FDT serial framework
We add simple serial framework which will select and use serial driver
based on details in FDT passed by previous booting stage.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
2020-05-01 10:02:39 +05:30