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MIPS: Don't panic on 5KEc.

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It's a bloody bog standard MIPS64R2 core with just a new PrId ID.  Iow
that essentially means Linux just panics because it doesn't know how to
name the core.

[ralf@linux-mips.org: Split original patch into several smaller patches.]

Signed-off-by: Leonid Yegoshin <yegoshin@mips.com>
Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3792/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Leonid Yegoshin 2012-07-06 21:56:01 +02:00 committed by Ralf Baechle
parent 113c62d984
commit 78d4803f75
3 changed files with 6 additions and 1 deletions
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2
arch/mips/include/asm/cpu.h
View File

@ -266,7 +266,7 @@ enum cpu_type_enum {
/*
* MIPS64 class processors
*/
CPU_5KC, CPU_20KC, CPU_25KF, CPU_SB1, CPU_SB1A, CPU_LOONGSON2,
CPU_5KC, CPU_5KE, CPU_20KC, CPU_25KF, CPU_SB1, CPU_SB1A, CPU_LOONGSON2,
CPU_CAVIUM_OCTEON, CPU_CAVIUM_OCTEON_PLUS, CPU_CAVIUM_OCTEON2,
CPU_XLR, CPU_XLP,

4
arch/mips/kernel/cpu-probe.c
View File

@ -811,6 +811,10 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
c->cputype = CPU_5KC;
__cpu_name[cpu] = "MIPS 5Kc";
break;
case PRID_IMP_5KE:
c->cputype = CPU_5KE;
__cpu_name[cpu] = "MIPS 5KE";
break;
case PRID_IMP_20KC:
c->cputype = CPU_20KC;
__cpu_name[cpu] = "MIPS 20Kc";

1
arch/mips/kernel/traps.c
View File

@ -1249,6 +1249,7 @@ static inline void parity_protection_init(void)
break;
case CPU_5KC:
case CPU_5KE:
write_c0_ecc(0x80000000);
back_to_back_c0_hazard();
/* Set the PE bit (bit 31) in the c0_errctl register. */