Dear Stefan,
In message <20210806133843.3642916-2...@denx.de> you wrote:
> The optimized memset() ARM64 implementation cannot be used very early
> on, since caches need to be enabled for this function to work. Otherwise
> an exception occurs (only printed with very early DEBUG_UART enabled).
>
> This patch now implements a very simple memset() version, which will be
> used in a few selected places in the ARM64 early boot process.
...
We have already implementations of memset() elsewhere, for example in
lib/string.c [hey, that's even the file you are modifying...], then
again in lib/efi/efi_stub.c and also in
lib/efi_loader/efi_freestanding.c - so do we really need another
implementation?
BTW: lib/efi_loader/efi_freestanding.c looks completely useless to
me. Can we dump this? [Adding Heinich to Cc:]
> +void *memset_simple(void *s, int c, size_t count)
> +{
> + char *s8 = (char *)s;
> +
> + while (count--)
> + *s8++ = c;
> +
> + return s;
> +}
In which way is this different from memset() as defined in the same
file (further up) with CONFIG_TINY_MEMSET enabled? And even without
this option the memset() implementation here should work. Or does
it not?
Best regards,
Wolfgang Denk
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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
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