brcm47xx: add a few nops to keep the cpu happy

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6568 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/brcm47xx-2.6/patches/150-cpu_fixes.patch b/target/linux/brcm47xx-2.6/patches/150-cpu_fixes.patch
new file mode 100644 (file)
index 0000000..6f96959
--- /dev/null
+++ b/target/linux/brcm47xx-2.6/patches/150-cpu_fixes.patch
@@ -0,0 +1,28 @@
+diff -urN linux-2.6.19.ref/arch/mips/kernel/genex.S linux-2.6.19/arch/mips/kernel/genex.S
+--- linux-2.6.19.ref/arch/mips/kernel/genex.S  2006-11-29 22:57:37.000000000 +0100
++++ linux-2.6.19/arch/mips/kernel/genex.S      2006-12-04 21:34:09.000000000 +0100
+@@ -73,6 +73,10 @@
+       .set    push
+       .set    mips3
+       .set    noat
++#ifdef CONFIG_BCM947XX
++      nop
++      nop
++#endif
+       mfc0    k1, CP0_CAUSE
+       li      k0, 31<<2
+       andi    k1, k1, 0x7c
+diff -urN linux-2.6.19.ref/include/asm-mips/stackframe.h linux-2.6.19/include/asm-mips/stackframe.h
+--- linux-2.6.19.ref/include/asm-mips/stackframe.h     2006-11-29 22:57:37.000000000 +0100
++++ linux-2.6.19/include/asm-mips/stackframe.h 2006-12-04 21:34:09.000000000 +0100
+@@ -334,6 +334,10 @@
+               .macro  RESTORE_SP_AND_RET
+               LONG_L  sp, PT_R29(sp)
+               .set    mips3
++#ifdef CONFIG_BCM947XX
++              nop
++              nop
++#endif
+               eret
+               .set    mips0
+               .endm