diff options
| -rw-r--r-- | core/init.c | 4 | ||||
| -rw-r--r-- | include/processor.h | 16 |
2 files changed, 20 insertions, 0 deletions
diff --git a/core/init.c b/core/init.c index 595d087..89240f6 100644 --- a/core/init.c +++ b/core/init.c @@ -1280,6 +1280,10 @@ void __noreturn __nomcount main_cpu_entry(const void *fdt) /* Install the OPAL Console handlers */ init_opal_console(); + if(is_fused_core(mfspr(SPR_PVR))) { + prerror("CPU: Detected unsupported fused core mode\n"); + abort(); + } /* * Some platforms set a flag to wait for SBE validation to be * performed by the BMC. If this occurs it leaves the SBE in a diff --git a/include/processor.h b/include/processor.h index 57c2ee1..42002fc 100644 --- a/include/processor.h +++ b/include/processor.h @@ -173,10 +173,12 @@ /* PVR bits */ #define SPR_PVR_TYPE 0xffff0000 +#define SPR_PVR_CHIP_TYPE 0x0000f000 #define SPR_PVR_VERS_MAJ 0x00000f00 #define SPR_PVR_VERS_MIN 0x000000ff #define PVR_TYPE(_pvr) GETFIELD(SPR_PVR_TYPE, _pvr) +#define PVR_CHIP_TYPE(_pvr) GETFIELD(SPR_PVR_CHIP_TYPE, _pvr) #define PVR_VERS_MAJ(_pvr) GETFIELD(SPR_PVR_VERS_MAJ, _pvr) #define PVR_VERS_MIN(_pvr) GETFIELD(SPR_PVR_VERS_MIN, _pvr) @@ -228,6 +230,20 @@ static inline bool is_power9n(uint32_t version) return true; } +static inline bool is_fused_core(uint32_t version) +{ + if (PVR_TYPE(version) != PVR_TYPE_P9) + return false; + + switch(PVR_CHIP_TYPE(version)) { + case 0: + case 2: + return true; + default: + return false; + } +} + #ifndef __TEST__ /* |