[atheros] enable 2.6.24 to run on ar53xx

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10957 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 61 insertions, 0 deletions

diff --git a/target/linux/atheros/patches-2.6.24/900-cevt_r4k_irq_disable_hazard.patch b/target/linux/atheros/patches-2.6.24/900-cevt_r4k_irq_disable_hazard.patch
new file mode 100644
index 000000000..d5e60624b
--- /dev/null
+++ b/target/linux/atheros/patches-2.6.24/900-cevt_r4k_irq_disable_hazard.patch
@@ -0,0 +1,12 @@
+Index: linux-2.6.24.2/arch/mips/kernel/cevt-r4k.c
+===================================================================
+--- linux-2.6.24.2.orig/arch/mips/kernel/cevt-r4k.c
++++ linux-2.6.24.2/arch/mips/kernel/cevt-r4k.c
+@@ -205,6 +205,7 @@ static int c0_compare_int_usable(void)
+ 	while ((int)(read_c0_count() - cnt) <= 0)
+ 		;	/* Wait for expiry  */
+ 
++	irq_disable_hazard();
+ 	if (!c0_compare_int_pending())
+ 		return 0;
+ 
diff --git a/target/linux/atheros/patches-2.6.24/901-get_c0_compare_irq_function.patch b/target/linux/atheros/patches-2.6.24/901-get_c0_compare_irq_function.patch
new file mode 100644
index 000000000..05da3864a
--- /dev/null
+++ b/target/linux/atheros/patches-2.6.24/901-get_c0_compare_irq_function.patch
@@ -0,0 +1,49 @@
+Index: linux-2.6.24.2/arch/mips/kernel/traps.c
+===================================================================
+--- linux-2.6.24.2.orig/arch/mips/kernel/traps.c
++++ linux-2.6.24.2/arch/mips/kernel/traps.c
+@@ -42,6 +42,7 @@
+ #include <asm/mmu_context.h>
+ #include <asm/types.h>
+ #include <asm/stacktrace.h>
++#include <asm/time.h>
+ 
+ extern asmlinkage void handle_int(void);
+ extern asmlinkage void handle_tlbm(void);
+@@ -1360,6 +1361,8 @@ void __init per_cpu_trap_init(void)
+ 	 */
+ 	if (cpu_has_mips_r2) {
+ 		cp0_compare_irq = (read_c0_intctl() >> 29) & 7;
++		if (get_c0_compare_irq)
++			cp0_compare_irq = get_c0_compare_irq();
+ 		cp0_perfcount_irq = (read_c0_intctl() >> 26) & 7;
+ 		if (cp0_perfcount_irq == cp0_compare_irq)
+ 			cp0_perfcount_irq = -1;
+Index: linux-2.6.24.2/include/asm-mips/time.h
+===================================================================
+--- linux-2.6.24.2.orig/include/asm-mips/time.h
++++ linux-2.6.24.2/include/asm-mips/time.h
+@@ -60,6 +60,7 @@ extern int (*perf_irq)(void);
+ #ifdef CONFIG_CEVT_R4K
+ extern int mips_clockevent_init(void);
+ extern unsigned int __weak get_c0_compare_int(void);
++extern unsigned int __weak get_c0_compare_irq(void);
+ #else
+ static inline int mips_clockevent_init(void)
+ {
+Index: linux-2.6.24.2/arch/mips/atheros/board.c
+===================================================================
+--- linux-2.6.24.2.orig/arch/mips/atheros/board.c
++++ linux-2.6.24.2/arch/mips/atheros/board.c
+@@ -205,6 +205,11 @@ void (*board_time_init)(void);
+ void __init plat_time_init(void) {
+     board_time_init();
+ }
++
++unsigned int __init get_c0_counter_irq(void)
++{
++	return CP0_LEGACY_COMPARE_IRQ;
++}
+ #endif
+ 
+ void __init arch_init_irq(void)