Tyan S8226: Fix integer truncated warning
Fix Warning:
sb700_cfg.c:129, GNU Compiler 4 (gcc), Priority: Normal
large integer implicitly truncated to unsigned type [-Woverflow]
The issue here was that an 8 bit value was being placed into a 2-bit
bitfield.
$ more src/vendorcode/amd/cimx/sb700/SBTYPE.h
[…]
UINT32 AzaliaSdin0 :2; //6
UINT32 AzaliaSdin1 :2; //8
UINT32 AzaliaSdin2 :2; //10
UINT32 AzaliaSdin3 :2; //12
$ more src/mainboard/tyan/s8226/sb700_cfg.h
[…]
* SDIN0 is define at BIT0 & BIT1
* 00 - GPIO PIN
* 01 - Reserved
* 10 - As a Azalia SDIN pin
* SDIN1 is define at BIT2 & BIT3
* SDIN2 is define at BIT4 & BIT5
* SDIN3 is define at BIT6 & BIT7
*/
#ifndef AZALIA_SDIN_PIN
#define AZALIA_SDIN_PIN 0x2A
#endif
[…]
$ more src/mainboard/tyan/s8226/sb700_cfg.c
[…]
sb_config->AzaliaSdin0 = AZALIA_SDIN_PIN;
[…]
The 8 bit value 0x2A (binary 00 10 10 10), was being used incorrectly
– I believe the original intent of this value was to enable the SDIN
pins 0, 1, & 2. Because it was getting truncated as it was put into
AzaliaSdin0, this wasn't happening and only SDIN0 was being enabled.
I am leaving only SDIN0 enabled at this point to as not change the
actual behavior on the platform.
Change-Id: Icaeb956926309dbfb5af25a36ccb842877e17a34
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/2452
Tested-by: build bot (Jenkins)
Reviewed-by: Dave Frodin <dave.frodin@se-eng.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed