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SGI-IP28 systems only use broken R10k rev 2.5 CPUs, which could lock
up, if ll/sc sequences are issued in certain order. Since those systems
are all non-SMP, we can disable ll/sc usage in kernel.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
BCM1250_M3_WAR is depending on CONFIG_CONFIG_SB1_PASS_2_WORKAROUNDS.
So using this option directly lets and remove define.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
SB1250 uart bug is related to PASS 2 workarounds. Use config
CONFIG_SB1_PASS_2_WORKAROUNDS directly and get rid of SIBYTE_1956_WAR.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Use a new config option to enable MIPS 34K ITLB workaround and remove
define from different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Use a new config option to enabel R1000_LLSC workaound and remove
define from different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Use a new config option to enable I-cache refill workaround and remove
define from different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Use a new config option to enable TX49XX I-cache index invalidate
workaround and remove define from different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Neither MIPS4K_ICACHE_REFILL_WAR nor MIPS_CACHE_SYNC_WAR are implemented,
so removing defines for it won't change anything.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Use a new config option to enable R4600 V2 cacheop hit workaround
and remove define from different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Use a new config option to enable R4600 V1 cacheop hit workaround
and remove define from the different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Use a new config option to enable R4600 V1 index I-cacheop workaround
and remove define from different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
R5432_CP0_INTERRUPT_WAR is defined as 0 for every system we support, and
so the workaround is never used. Remove the dead code.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Hardcode the absence of the MIPS16e2 ASE for all the systems that do so
for the MIPS16 ASE already, providing for code to be optimized away.
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16097/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Broken values for UNCAC_BASE/IO_BASE caused complete breakage of IP28
builds. Only set special PHY_OFFSET and take everything else from
generic spaces.h
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7549/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 81832d7e7962a40d08d9fe2e7e71b7887bc30097)
o Move current_cpu_type() to a separate header file
o #ifdefing on supported CPU types lets modern GCC know that certain
code in callers may be discarded ideally turning current_cpu_type() into
a function returning a constant.
o Use current_cpu_type() rather than direct access to struct cpuinfo_mips.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5833/
This reverts commit 3f4579252aa166641861a64f1c2883365ca126c2. It is
invalid because the macros CAC_ADDR and UNCAC_ADDR have a kernel
virtual address as an argument and also returns a kernel virtual
address. Using and physical address PHYS_OFFSET is blatantly wrong
for a macro common to multiple platforms.
Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Florian Fainelli <florian@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/5528/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Having received another series of whitespace patches I decided to do this
once and for all rather than dealing with this kind of patches trickling
in forever.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Most supported systems currently hardwire cpu_has_dsp to 0, so we also
can disable support for cpu_has_dsp2 resulting in a slightly smaller
kernel.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patchset removes some dead code and creates a platform device
for the RTC class driver.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
