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| author | Mike Frysinger <vapier@gentoo.org> | 2011-02-02 22:31:42 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-03-18 04:01:03 -0400 |
| commit | 820b127dae869cbbd2133f066e8b8f32a90d46e5 (patch) | |
| tree | 792ffece1051b81b1c678174129663680d54253b /arch/blackfin/mach-common | |
| parent | 567ebfc99d7546913408b560ad443a5315bf8a53 (diff) | |
| download | talos-obmc-linux-820b127dae869cbbd2133f066e8b8f32a90d46e5.tar.gz talos-obmc-linux-820b127dae869cbbd2133f066e8b8f32a90d46e5.zip | |
Blackfin: split optimization settings more
We need to place icache flush funcs into L1 inst sram to work around a
hardware anomaly. But this currently breaks SMP support as the L1 inst
sram is per-core and cannot be called directly. So in preparation for
making that work, split the two options.
Further, split out the SMP depend so that we can allow some for SMP.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-common')
| -rw-r--r-- | arch/blackfin/mach-common/arch_checks.c | 2 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/cache.S | 18 |
2 files changed, 13 insertions, 7 deletions
diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c index bceb98126c21..d8643fdd0fcf 100644 --- a/arch/blackfin/mach-common/arch_checks.c +++ b/arch/blackfin/mach-common/arch_checks.c @@ -61,6 +61,6 @@ # error "Anomaly 05000220 does not allow you to use Write Back cache with L2 or External Memory" #endif -#if ANOMALY_05000491 && !defined(CONFIG_CACHE_FLUSH_L1) +#if ANOMALY_05000491 && !defined(CONFIG_ICACHE_FLUSH_L1) # error You need IFLUSH in L1 inst while Anomaly 05000491 applies #endif diff --git a/arch/blackfin/mach-common/cache.S b/arch/blackfin/mach-common/cache.S index ab4a925a443e..85aadeb76658 100644 --- a/arch/blackfin/mach-common/cache.S +++ b/arch/blackfin/mach-common/cache.S @@ -11,12 +11,6 @@ #include <asm/cache.h> #include <asm/page.h> -#ifdef CONFIG_CACHE_FLUSH_L1 -.section .l1.text -#else -.text -#endif - /* 05000443 - IFLUSH cannot be last instruction in hardware loop */ #if ANOMALY_05000443 # define BROK_FLUSH_INST "IFLUSH" @@ -68,11 +62,23 @@ RTS; .endm +#ifdef CONFIG_ICACHE_FLUSH_L1 +.section .l1.text +#else +.text +#endif + /* Invalidate all instruction cache lines assocoiated with this memory area */ ENTRY(_blackfin_icache_flush_range) do_flush IFLUSH ENDPROC(_blackfin_icache_flush_range) +#ifdef CONFIG_DCACHE_FLUSH_L1 +.section .l1.text +#else +.text +#endif + /* Throw away all D-cached data in specified region without any obligation to * write them back. Since the Blackfin ISA does not have an "invalidate" * instruction, we use flush/invalidate. Perhaps as a speed optimization we |
