deactivate mips wait instruction for MIPS 74K on Broadcom SoCs
authorHauke Mehrtens <hauke@hauke-m.de>
Thu, 20 Sep 2012 14:51:57 +0000 (14:51 +0000)
committerHauke Mehrtens <hauke@hauke-m.de>
Thu, 20 Sep 2012 14:51:57 +0000 (14:51 +0000)
When not removing support for the wait instruction, when ruining on the
BCM4706 SoC the system stops after msleep() without an exception. I
haven't seen this problem on the other Broadcom SoCs with a 74K CPU,
but in the Broadcom SDK it is deactivated for all CPUs of this type.

SVN-Revision: 33496

target/linux/brcm47xx/patches-3.3/170-fix-74k-cpu.patch [new file with mode: 0644]

diff --git a/target/linux/brcm47xx/patches-3.3/170-fix-74k-cpu.patch b/target/linux/brcm47xx/patches-3.3/170-fix-74k-cpu.patch
new file mode 100644 (file)
index 0000000..6eee895
--- /dev/null
@@ -0,0 +1,12 @@
+--- a/arch/mips/kernel/cpu-probe.c
++++ b/arch/mips/kernel/cpu-probe.c
+@@ -209,9 +209,6 @@ void __init check_wait(void)
+               break;
+       case CPU_74K:
+-              cpu_wait = r4k_wait;
+-              if ((c->processor_id & 0xff) >= PRID_REV_ENCODE_332(2, 1, 0))
+-                      cpu_wait = r4k_wait_irqoff;
+               break;
+       case CPU_TX49XX: