[RFC PATCH] lib: sbi: Disambiguation between ISA and misa register

[Tsukasa OI]

I'm withdrawing this because I missed one important commit:
5a6be99cc53b "lib: sbi: Remove 's' and 'u' from misa_string() output"

My original proposal (the first version) was made long before this
commit is merged (Nov 2021) and I didn't notice this when submitting this.

With this removal of 'S' and 'U', (although it wouldn't be always good)
we don't need to worry about mixing "misa" and Base ISA since we don't
have "Base ISA" invalid as an ISA string.

Thanks,
Tsukasa

On 2022/11/27 12:46, Tsukasa OI wrote:
> From: Tsukasa OI <research_trasio at irq.a4lg.com>
> 
> This commit makes disambiguation between named base ISA (and extensions
> implemented) and contents of "misa" CSR (ISA, some major extensions and
> implemented privilege modes).
> 
> For instance, 'S' and 'U' are valid bits in the "misa" CSR (denoting
> existence of supervisor mode and user mode, respectively) but not valid
> extensions.
> 
> The author proposes calling "Boot HART Base ISA" something else.
> 
> Signed-off-by: Tsukasa OI <research_trasio at irq.a4lg.com>
> ---
>  lib/sbi/sbi_init.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/lib/sbi/sbi_init.c b/lib/sbi/sbi_init.c
> index a8500e592742..fc00cd81f6ef 100644
> --- a/lib/sbi/sbi_init.c
> +++ b/lib/sbi/sbi_init.c
> @@ -146,7 +146,7 @@ static void sbi_boot_print_hart(struct sbi_scratch *scratch, u32 hartid)
>  	sbi_hart_get_priv_version_str(scratch, str, sizeof(str));
>  	sbi_printf("Boot HART Priv Version    : %s\n", str);
>  	misa_string(xlen, str, sizeof(str));
> -	sbi_printf("Boot HART Base ISA        : %s\n", str);
> +	sbi_printf("Boot HART MISA Register   : %s\n", str);
>  	sbi_hart_get_extensions_str(scratch, str, sizeof(str));
>  	sbi_printf("Boot HART ISA Extensions  : %s\n", str);
>  	sbi_printf("Boot HART PMP Count       : %d\n",
> 
> base-commit: 1b0d71bb9ff9180c4ae0026de5f4a92a88f1884e