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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-29 11:13:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-29 11:13:10 -0700
commitb77d643ced576bdd1e918aebda869de74696cde9 (patch)
treebb5d708f4bbb48461923a28e63a8cf8bdd477dd7 /arch/mips/kernel/cpu-probe.c
parentb4020c1b198c0f0c0b0ff0cfdd824a26b93edd6f (diff)
parent64575f918f3279d8487cf670dbefa956ce16a526 (diff)
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (46 commits) ftrace/MIPS: Enable C Version of recordmcount ftrace/MIPS: Add module support for C version of recordmcount ftrace/MIPS: Add MIPS64 support for C version of recordmcount MIPS: Make TASK_SIZE reflect proper size for both 32 and 64 bit processes. MIPS: Allow UserLocal on MIPS_R1 processors MIPS: Honor L2 bypass bit MIPS: Add BMIPS CP0 register definitions MIPS: Add BMIPS processor types to Kconfig MIPS: Decouple BMIPS CPU support from bcm47xx/bcm63xx SoC code MIPS: Add support for hardware performance events (mipsxx) MIPS: Perf-events: Add callchain support MIPS: add support for hardware performance events (skeleton) MIPS: add support for software performance events MIPS: define local_xchg from xchg_local to atomic_long_xchg MIPS: AR7: Add support for Titan (TNETV10xx) SoC variant MIPS: AR7: Initialize GPIO earlier MIPS: Add platform device and Kconfig for Octeon USB EHCI / OHCI USB: Add EHCI and OHCH glue for OCTEON II SOCs. MIPS: Octeon: Add register definitions for EHCI / OHCI USB glue logic. MIPS: Octeon: Apply CN63XXP1 errata workarounds. ...
Diffstat (limited to 'arch/mips/kernel/cpu-probe.c')
-rw-r--r--arch/mips/kernel/cpu-probe.c82
1 files changed, 53 insertions, 29 deletions
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index b1b304ea212..71620e19827 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -25,6 +25,8 @@
#include <asm/system.h>
#include <asm/watch.h>
#include <asm/spram.h>
+#include <asm/uaccess.h>
+
/*
* Not all of the MIPS CPUs have the "wait" instruction available. Moreover,
* the implementation of the "wait" feature differs between CPU families. This
@@ -181,12 +183,13 @@ void __init check_wait(void)
case CPU_5KC:
case CPU_25KF:
case CPU_PR4450:
- case CPU_BCM3302:
- case CPU_BCM6338:
- case CPU_BCM6348:
- case CPU_BCM6358:
+ case CPU_BMIPS3300:
+ case CPU_BMIPS4350:
+ case CPU_BMIPS4380:
+ case CPU_BMIPS5000:
case CPU_CAVIUM_OCTEON:
case CPU_CAVIUM_OCTEON_PLUS:
+ case CPU_CAVIUM_OCTEON2:
case CPU_JZRISC:
cpu_wait = r4k_wait;
break;
@@ -902,33 +905,37 @@ static inline void cpu_probe_broadcom(struct cpuinfo_mips *c, unsigned int cpu)
{
decode_configs(c);
switch (c->processor_id & 0xff00) {
- case PRID_IMP_BCM3302:
- /* same as PRID_IMP_BCM6338 */
- c->cputype = CPU_BCM3302;
- __cpu_name[cpu] = "Broadcom BCM3302";
- break;
- case PRID_IMP_BCM4710:
- c->cputype = CPU_BCM4710;
- __cpu_name[cpu] = "Broadcom BCM4710";
- break;
- case PRID_IMP_BCM6345:
- c->cputype = CPU_BCM6345;
- __cpu_name[cpu] = "Broadcom BCM6345";
+ case PRID_IMP_BMIPS32:
+ c->cputype = CPU_BMIPS32;
+ __cpu_name[cpu] = "Broadcom BMIPS32";
+ break;
+ case PRID_IMP_BMIPS3300:
+ case PRID_IMP_BMIPS3300_ALT:
+ case PRID_IMP_BMIPS3300_BUG:
+ c->cputype = CPU_BMIPS3300;
+ __cpu_name[cpu] = "Broadcom BMIPS3300";
+ break;
+ case PRID_IMP_BMIPS43XX: {
+ int rev = c->processor_id & 0xff;
+
+ if (rev >= PRID_REV_BMIPS4380_LO &&
+ rev <= PRID_REV_BMIPS4380_HI) {
+ c->cputype = CPU_BMIPS4380;
+ __cpu_name[cpu] = "Broadcom BMIPS4380";
+ } else {
+ c->cputype = CPU_BMIPS4350;
+ __cpu_name[cpu] = "Broadcom BMIPS4350";
+ }
break;
- case PRID_IMP_BCM6348:
- c->cputype = CPU_BCM6348;
- __cpu_name[cpu] = "Broadcom BCM6348";
+ }
+ case PRID_IMP_BMIPS5000:
+ c->cputype = CPU_BMIPS5000;
+ __cpu_name[cpu] = "Broadcom BMIPS5000";
+ c->options |= MIPS_CPU_ULRI;
break;
- case PRID_IMP_BCM4350:
- switch (c->processor_id & 0xf0) {
- case PRID_REV_BCM6358:
- c->cputype = CPU_BCM6358;
- __cpu_name[cpu] = "Broadcom BCM6358";
- break;
- default:
- c->cputype = CPU_UNKNOWN;
- break;
- }
+ case PRID_IMP_BMIPS4KC:
+ c->cputype = CPU_4KC;
+ __cpu_name[cpu] = "MIPS 4Kc";
break;
}
}
@@ -953,6 +960,12 @@ platform:
if (cpu == 0)
__elf_platform = "octeon";
break;
+ case PRID_IMP_CAVIUM_CN63XX:
+ c->cputype = CPU_CAVIUM_OCTEON2;
+ __cpu_name[cpu] = "Cavium Octeon II";
+ if (cpu == 0)
+ __elf_platform = "octeon2";
+ break;
default:
printk(KERN_INFO "Unknown Octeon chip!\n");
c->cputype = CPU_UNKNOWN;
@@ -976,6 +989,12 @@ static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
}
}
+#ifdef CONFIG_64BIT
+/* For use by uaccess.h */
+u64 __ua_limit;
+EXPORT_SYMBOL(__ua_limit);
+#endif
+
const char *__cpu_name[NR_CPUS];
const char *__elf_platform;
@@ -1053,6 +1072,11 @@ __cpuinit void cpu_probe(void)
c->srsets = 1;
cpu_probe_vmbits(c);
+
+#ifdef CONFIG_64BIT
+ if (cpu == 0)
+ __ua_limit = ~((1ull << cpu_vmbits) - 1);
+#endif
}
__cpuinit void cpu_report(void)