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MIPS: r4k-bugs64: Limit R4k bug checks to affected systems

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Only build the checks for R4k errata workarounds if we expect that the
kernel might actually run on a system with an R4k CPU - ie.
CONFIG_SYS_HAS_CPU_R4X00=y & we're targeting a pre-MIPSr1 ISA revision.

Rename cpu-bugs64.c to r4k-bugs64.c to indicate the fact that the code
is specific to R4k CPUs.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
This commit is contained in:
Paul Burton
2019-10-01 23:04:32 +00:00
parent 4bf841ebf1
commit 071d2f0b54
5 changed files with 14 additions and 12 deletions
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18
arch/mips/include/asm/bugs.h
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@@ -26,9 +26,8 @@ extern void check_bugs64(void);
static inline void check_bugs_early(void)
{
#ifdef CONFIG_64BIT
check_bugs64_early();
#endif
if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
check_bugs64_early();
}
static inline void check_bugs(void)
@@ -37,19 +36,18 @@ static inline void check_bugs(void)
cpu_data[cpu].udelay_val = loops_per_jiffy;
check_bugs32();
#ifdef CONFIG_64BIT
check_bugs64();
#endif
if (IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
check_bugs64();
}
static inline int r4k_daddiu_bug(void)
{
#ifdef CONFIG_64BIT
if (!IS_ENABLED(CONFIG_CPU_R4X00_BUGS64))
return 0;
WARN_ON(daddiu_bug < 0);
return daddiu_bug != 0;
#else
return 0;
#endif
}
#endif /* _ASM_BUGS_H */