On Sat, Jun 27, 2026 at 03:44:12PM +0100, Harsimran Singh Tungal wrote: > Add efi_memset_runtime() for EFI runtime paths > > This keeps buffer initialization in runtime-resident code after > ExitBootServices() and avoids relying on non-runtime helpers. > > Reviewed-by: Ilias Apalodimas <[email protected]> > Reviewed-by: Simon Glass <[email protected]> > Signed-off-by: Harsimran Singh Tungal <[email protected]> > --- > include/efi_loader.h | 3 +++ > lib/efi_loader/efi_runtime.c | 20 ++++++++++++++++++++ > 2 files changed, 23 insertions(+) > > diff --git a/include/efi_loader.h b/include/efi_loader.h > index 3a4d502631c..9dfea1fd7de 100644 > --- a/include/efi_loader.h > +++ b/include/efi_loader.h > @@ -1151,6 +1151,9 @@ void efi_memcpy_runtime(void *dest, const void *src, > size_t n); > /* runtime implementation of memcmp() */ > int efi_memcmp_runtime(const void *s1, const void *s2, size_t n); > > +/* runtime implementation of memset() */ > +void *efi_memset_runtime(void *dest, int c, size_t n); > + > /* commonly used helper functions */ > u16 *efi_create_indexed_name(u16 *buffer, size_t buffer_size, const char > *name, > unsigned int index); > diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c > index 73d4097464c..c0182931c42 100644 > --- a/lib/efi_loader/efi_runtime.c > +++ b/lib/efi_loader/efi_runtime.c > @@ -233,6 +233,26 @@ int __efi_runtime efi_memcmp_runtime(const void *s1, > const void *s2, size_t n) > return 0; > } > > +/** > + * efi_memset_runtime() - fill memory area > + * > + * At runtime memset() is not available. > + * > + * @dest: destination buffer > + * @c: byte value used to fill destination buffer > + * @n: number of bytes to set > + * Return: pointer to destination buffer > + */ > +__efi_runtime void *efi_memset_runtime(void *dest, int c, size_t n) > +{ > + u8 *d = dest; > + > + for (; n; --n) > + *d++ = (u8)c; > + > + return dest; > +} > + > /** > * efi_update_table_header_crc32() - Update crc32 in table header > * > -- > 2.34.1 >
Reviewed-by: Abdellatif El Khlifi <[email protected]>
