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| author | Vineet Gupta <vgupta@synopsys.com> | 2016-10-20 18:08:10 -0700 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2016-10-28 10:09:06 -0700 |
| commit | a024fd9bc4d0b102b8aa66b8ecba678d2d32fdcf (patch) | |
| tree | 291d30ae7b47acf0eb3ab14f0c96a3061967fee8 /arch/arc/kernel | |
| parent | 73e284d2572581d848267c74552215f95f0f0996 (diff) | |
| download | linux-a024fd9bc4d0b102b8aa66b8ecba678d2d32fdcf.tar.gz linux-a024fd9bc4d0b102b8aa66b8ecba678d2d32fdcf.tar.bz2 linux-a024fd9bc4d0b102b8aa66b8ecba678d2d32fdcf.zip | |
ARC: boot log: don't assume SWAPE instruction support
This came to light when helping a customer with oldish ARC750 core who
were getting instruction errors because of lack of SWAPE but boot log
was incorrectly printing it as being present
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel')
| -rw-r--r-- | arch/arc/kernel/setup.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 0170d94f3860..156981aecd74 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -138,6 +138,9 @@ static void read_arc_build_cfg_regs(void) cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0; /* 1,3 */ cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0; cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */ + cpu->extn.swape = (cpu->core.family >= 0x34) ? 1 : + IS_ENABLED(CONFIG_ARC_HAS_SWAPE); + READ_BCR(ARC_REG_XY_MEM_BCR, cpu->extn_xymem); /* Read CCM BCRs for boot reporting even if not enabled in Kconfig */ @@ -250,7 +253,7 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len) IS_AVAIL1(cpu->extn.swap, "swap "), IS_AVAIL1(cpu->extn.minmax, "minmax "), IS_AVAIL1(cpu->extn.crc, "crc "), - IS_AVAIL2(1, "swape", CONFIG_ARC_HAS_SWAPE)); + IS_AVAIL2(cpu->extn.swape, "swape", CONFIG_ARC_HAS_SWAPE)); if (cpu->bpu.ver) n += scnprintf(buf + n, len - n, |