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RISC-V doesn't generate exceptions on divide-by-zero, but the result,
all bits set, is not likely what people expect either. In all cases
where we divide by baudrate there's a chance it's zero (when the DT
it came from is "bad"). To avoid difficult to debug situations, leave
baudrate dependent registers alone when baudrate is zero, as, also in
all cases, it appears we can skip initialization of those registers
and still [hopefully] have a functioning UART.
Signed-off-by: Andrew Jones <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The age old version of Shakti UART was upgraded long back, but we missed
updating the driver in OpenSBI. The old version of UART is not supported
anymore, hence removed the inline comment which is also outdated now.
Signed-off-by: Prasanna T <[email protected]>
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Xiang W <[email protected]>
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Using "void *" in arithmetic causes errors with strict compiler settings:
"error: pointer of type 'void *' used in arithmetic [-Werror=pointer-arith]"
Avoid these by calculating on "char *" where 1-byte data size is assumed.
Signed-off-by: Jukka Laitinen <[email protected]>
Reviewed-by: Dong Du <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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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 <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
Reviewed-by: Xiang W <[email protected]>
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Fix uart_putc implementation.
Due to a bug in the IP, this went unnoticed.
Use macros instead of magic numbers to make the code
more readable.
Signed-off-by: Vijai Kumar K <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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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 <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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