ppc4xx: Add routine to retrieve CPU number
PATCH v5 3/3 ppc4xx: Add routine to retrieve CPU number
Provide a weak defined routine to retrieve the CPU number for reference boards that have multiple CPU's. Default behavior is the existing single CPU print output. Reference boards with multiple CPU's need to provide a board specific routine. See board/amcc/arches/arches.c for an example.
Signed-off-by Adam Graham <[email protected]>
Signed-off-by Victor Gallardo <[email protected]>
---
v2:
- Correct return code of the generic get_cpu_num routine and make the return code a defined value.
v3:
- Correct tab/spaces in ppc4xx.h
v4:
- Fix commit text (line to long)
- Remove starting underscores from NA_OR_UNKNOWN_CPU
v5:
- Fix commit text (line to long) again.
cpu/ppc4xx/cpu.c | 19 ++++++++++++++++++- include/ppc4xx.h | 3 +++ 2 files changed, 21 insertions(+), 1 deletions(-)
cpu/ppc4xx/cpu.c +18 -1
@@ -41,6 +41,18 @@ DECLARE_GLOBAL_DATA_PTR;void board_reset (void ); +/* +* To provide an interface to detect CPU number for boards that support +* more then one CPU, we implement the "weak" default functions here. +* +* Returns CPU number +*/ +int __get_cpu_num (void ) +{ +return NA_OR_UNKNOWN_CPU ; +} +int get_cpu_num (void ) __attribute__((weak,alias ("__get_cpu_num" ))); +#if defined(CONFIG_405GP ) || \ defined(CONFIG_440EP ) || defined(CONFIG_440GR ) || \ defined(CONFIG_440EPX ) || defined(CONFIG_440GRX )
@@ -274,8 +286,13 @@ int checkcpu (void)#if !defined(CONFIG_IOP480 )char addstr[64 ] ="" ;sys_info_t sys_info; +int cpu_num; -puts ("CPU: " ); + cpu_num =get_cpu_num (); +if (cpu_num >=0 ) +printf ("CPU%d: " , cpu_num); +else +puts ("CPU: " );get_sys_info (&sys_info);
include/ppc4xx.h +3 -0
@@ -218,4 +218,7 @@ static inline void set_mcsr(u32 val)#endif /* __ASSEMBLY__ */ +/* for multi-cpu support */ +#define NA_OR_UNKNOWN_CPU -1 +#endif /* __PPC4XX_H__ */
Signature · 1 line
1.5.5