diff options
| author | Saurabh Mishra <mishra.saurabh@intel.corp-partner.google.com> | 2024-08-30 14:02:06 +0530 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2024-09-04 18:31:25 +0000 |
| commit | 640d1c456c977711774f0b7f58f1a97e4512fc4b (patch) | |
| tree | 4a75eebc033c416ac4be3ac25468dded0e439bca /src | |
| parent | 8db1dfb9cb8ae797214f7506a3204faf3af00945 (diff) | |
src/include: Introduce a new BIT_FLAG_32(x) macro
Introduces the BIT_FLAG_32(x) macro to create a 32-bit mask with the
designated bit set. This ensures compatibility with the 32-bit
'GEN_PMCON_A' register on 64-bit systems, where 1ul is 64 bits wide and
could potentially cause an overflow when shifted beyond 31 bits.
Change-Id: I70be1ccba59d25af2ba85a2014232072abf2f87d
Signed-off-by: Saurabh Mishra <mishra.saurabh@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84142
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Pratikkumar V Prajapati <pratikkumar.v.prajapati@intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/types.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/include/types.h b/src/include/types.h index ca4571777c..df5e7ae06d 100644 --- a/src/include/types.h +++ b/src/include/types.h @@ -21,6 +21,15 @@ #define BIT(x) (1ul << (x)) #endif +/* + * This macro declares a bit as a 32-bits unsigned integer. The common BIT_32(x) + * macro is already used by some external header file. To avoid any conflicts, we + * use a different name. + */ +#ifndef BIT_FLAG_32 +#define BIT_FLAG_32(x) (1u << (x)) +#endif + #define BITS_PER_BYTE 8 #endif /* __TYPES_H */ |