diff options
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
| -rw-r--r-- | arch/mips/kernel/cpu-probe.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index d5e335e6846a..9635c1db3ae6 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Processor capabilities determination functions. * @@ -5,11 +6,6 @@ * Copyright (C) 1994 - 2006 Ralf Baechle * Copyright (C) 2003, 2004 Maciej W. Rozycki * Copyright (C) 2001, 2004, 2011, 2012 MIPS Technologies, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/init.h> #include <linux/kernel.h> @@ -1973,6 +1969,14 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu) panic("Unknown Ingenic Processor ID!"); break; } + + /* + * The config0 register in the Xburst CPUs with a processor ID of + * PRID_COMP_INGENIC_D0 report themselves as MIPS32r2 compatible, + * but they don't actually support this ISA. + */ + if ((c->processor_id & PRID_COMP_MASK) == PRID_COMP_INGENIC_D0) + c->isa_level &= ~MIPS_CPU_ISA_M32R2; } static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu) |