opensbi.git/lib/utils/serial/semihosting.c, branch v1.5

lib: utils/serial: remove semihosting_putc

2023-11-17T10:33:24Z

For some debuggers that do not implement SYSWRITEC and SYSREADC operations, we have to use SYSWRITE and SYSREAD. Instead of implementing semihosting_putc() using SYSWRITE, let us simply remove semihosting_putc() because console_putc/console_puts are now interchangeable. Signed-off-by: Chen Pei Signed-off-by: Xiang W Reviewed-by: Guo Ren Reviewed-by: Anup Patel

lib: utils/serial: Optimize semihosting_putc implementation

2023-11-16T06:06:44Z

For some debuggers that do not implement SYSWRITEC and SYSREADC operations, we can use SYSWRITE and SYSREAD instead like the implementation of semihosting_getc(). Signed-off-by: Chen Pei Reviewed-by: Xiang W Reviewed-by: Anup Patel

lib: utils/serial: Implement console_puts() for semihosting

2023-02-10T04:34:59Z

We implement console_puts() for semihosting serial driver to speed-up semihosting based prints. Signed-off-by: Anup Patel Reviewed-by: Atish Patra Reviewed-by: Xiang W Reviewed-by: Bin Meng Reviewed-by: Andrew Jones

lib: utils/serial: Fix semihosting compile error using LLVM

2022-11-15T11:08:41Z

We fix the following semihosting compile error observed using LLVM: lib/utils/serial/semihosting.c:158:12: error: result of comparison of constant -1 with expression of type 'char' is always true [-Werror,-Wtautological-constant-out-of-range-compare] ret = ch > -1 ? ch : -1; ~~ ^ ~~ Fixes: 7f09fba86e43 ("lib: utils/serial: add semihosting support") Signed-off-by: Anup Patel Reviewed-by: Xiang W Reviewed-by: Bin Meng

lib: utils/serial: add semihosting support

2022-09-13T12:54:42Z

We add RISC-V semihosting based serial console for JTAG based early debugging. The RISC-V semihosting specification is available at: https://github.com/riscv/riscv-semihosting-spec/blob/main/riscv-semihosting-spec.adoc Signed-off-by: Anup Patel Signed-off-by: Kautuk Consul Reviewed-by: Anup Patel