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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-09 18:10:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-09 18:10:34 -0700
commit82abb273d838318424644d8f02825db0fbbd400a (patch)
treee1ea8a92db4ba68f347249986ffe3a25ffbf8219 /arch/mips/kernel/cpu-probe.c
parent9b651cc2277b5e4883012ebab0fea2bcda4cbafa (diff)
parentf8647b506d7116a1a3accd8d618184096e85f50b (diff)
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle: - three fixes for 3.15 that didn't make it in time - limited Octeon 3 support. - paravirtualization support - improvment to platform support for Netlogix SOCs. - add support for powering down the Malta eval board in software - add many instructions to the in-kernel microassembler. - add support for the BPF JIT. - minor cleanups of the BCM47xx code. - large cleanup of math emu code resulting in significant code size reduction, better readability of the code and more accurate emulation. - improvments to the MIPS CPS code. - support C3 power status for the R4k count/compare clock device. - improvments to the GIO support for older SGI workstations. - increase number of supported CPUs to 256; this can be reached on certain embedded multithreaded ccNUMA configurations. - various small cleanups, updates and fixes * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (173 commits) MIPS: IP22/IP28: Improve GIO support MIPS: Octeon: Add twsi interrupt initialization for OCTEON 3XXX, 5XXX, 63XX DEC: Document the R4k MB ASIC mini interrupt controller DEC: Add self as the maintainer MIPS: Add microMIPS MSA support. MIPS: Replace calls to obsolete strict_strto call with kstrto* equivalents. MIPS: Replace obsolete strict_strto call with kstrto MIPS: BFP: Simplify code slightly. MIPS: Call find_vma with the mmap_sem held MIPS: Fix 'write_msa_##' inline macro. MIPS: Fix MSA toolchain support detection. mips: Update the email address of Geert Uytterhoeven MIPS: Add minimal defconfig for mips_paravirt MIPS: Enable build for new system 'paravirt' MIPS: paravirt: Add pci controller for virtio MIPS: Add code for new system 'paravirt' MIPS: Add functions for hypervisor call MIPS: OCTEON: Add OCTEON3 to __get_cpu_type MIPS: Add function get_ebase_cpunum MIPS: Add minimal support for OCTEON3 to c-r4k.c ...
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
-rw-r--r--arch/mips/kernel/cpu-probe.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 6e8fb85ce7c3..d74f957c561e 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -62,7 +62,7 @@ static inline void check_errata(void)
case CPU_34K:
/*
* Erratum "RPS May Cause Incorrect Instruction Execution"
- * This code only handles VPE0, any SMP/SMTC/RTOS code
+ * This code only handles VPE0, any SMP/RTOS code
* making use of VPE1 will be responsable for that VPE.
*/
if ((c->processor_id & PRID_REV_MASK) <= PRID_REV_34K_V1_0_2)
@@ -423,7 +423,7 @@ static void decode_configs(struct cpuinfo_mips *c)
#ifndef CONFIG_MIPS_CPS
if (cpu_has_mips_r2) {
- c->core = read_c0_ebase() & 0x3ff;
+ c->core = get_ebase_cpunum();
if (cpu_has_mipsmt)
c->core >>= fls(core_nvpes()) - 1;
}
@@ -684,21 +684,6 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
*/
c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48;
break;
- case PRID_IMP_RM9000:
- c->cputype = CPU_RM9000;
- __cpu_name[cpu] = "RM9000";
- set_isa(c, MIPS_CPU_ISA_IV);
- c->options = R4K_OPTS | MIPS_CPU_FPU | MIPS_CPU_32FPR |
- MIPS_CPU_LLSC;
- /*
- * Bit 29 in the info register of the RM9000
- * indicates if the TLB has 48 or 64 entries.
- *
- * 29 1 => 64 entry JTLB
- * 0 => 48 entry JTLB
- */
- c->tlbsize = (read_c0_info() & (1 << 29)) ? 64 : 48;
- break;
case PRID_IMP_R8000:
c->cputype = CPU_R8000;
__cpu_name[cpu] = "RM8000";
@@ -1041,6 +1026,7 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
decode_configs(c);
/* JZRISC does not implement the CP0 counter. */
c->options &= ~MIPS_CPU_COUNTER;
+ BUG_ON(!__builtin_constant_p(cpu_has_counter) || cpu_has_counter);
switch (c->processor_id & PRID_IMP_MASK) {
case PRID_IMP_JZRISC:
c->cputype = CPU_JZRISC;
@@ -1074,6 +1060,7 @@ static inline void cpu_probe_netlogic(struct cpuinfo_mips *c, int cpu)
switch (c->processor_id & PRID_IMP_MASK) {
case PRID_IMP_NETLOGIC_XLP2XX:
case PRID_IMP_NETLOGIC_XLP9XX:
+ case PRID_IMP_NETLOGIC_XLP5XX:
c->cputype = CPU_XLP;
__cpu_name[cpu] = "Broadcom XLPII";
break;