1 files changed, 147 insertions, 0 deletions
diff --git a/openwrt/target/linux/linux-2.4/patches/brcm/004-bcm94710_mmu.patch b/openwrt/target/linux/linux-2.4/patches/brcm/004-bcm94710_mmu.patch
new file mode 100644
index 000000000..9fd0162ed
--- /dev/null
+++ b/openwrt/target/linux/linux-2.4/patches/brcm/004-bcm94710_mmu.patch
@@ -0,0 +1,147 @@
+diff -urN linux.old/arch/mips/mm/c-r4k.c linux.dev/arch/mips/mm/c-r4k.c
+--- linux.old/arch/mips/mm/c-r4k.c	2005-05-28 17:42:06.000000000 +0200
++++ linux.dev/arch/mips/mm/c-r4k.c	2005-05-29 18:26:34.000000000 +0200
+@@ -14,6 +14,12 @@
+ #include <linux/mm.h>
+ #include <linux/bitops.h>
+ 
++#ifdef CONFIG_BCM4710
++#include "../bcm947xx/include/typedefs.h"
++#include "../bcm947xx/include/sbconfig.h"
++#include <asm/paccess.h>
++#endif
++
+ #include <asm/bcache.h>
+ #include <asm/bootinfo.h>
+ #include <asm/cacheops.h>
+@@ -390,6 +396,11 @@
+ 			addr = start & ~(dc_lsize - 1);
+ 			aend = (end - 1) & ~(dc_lsize - 1);
+ 
++#ifdef CONFIG_BCM4710
++			BCM4710_FILL_TLB(addr);
++			BCM4710_FILL_TLB(aend);
++#endif
++
+ 			while (1) {
+ 				/* Hit_Writeback_Inv_D */
+ 				protected_writeback_dcache_line(addr);
+@@ -509,6 +520,10 @@
+ 		R4600_HIT_CACHEOP_WAR_IMPL;
+ 		a = addr & ~(dc_lsize - 1);
+ 		end = (addr + size - 1) & ~(dc_lsize - 1);
++#ifdef CONFIG_BCM4710
++		BCM4710_FILL_TLB(a);
++		BCM4710_FILL_TLB(end);
++#endif
+ 		while (1) {
+ 			flush_dcache_line(a);	/* Hit_Writeback_Inv_D */
+ 			if (a == end)
+@@ -576,6 +591,10 @@
+ 	unsigned long ic_lsize = current_cpu_data.icache.linesz;
+ 	unsigned long dc_lsize = current_cpu_data.dcache.linesz;
+ 
++#ifdef CONFIG_BCM4710
++	BCM4710_PROTECTED_FILL_TLB(addr);
++	BCM4710_PROTECTED_FILL_TLB(addr + 4);
++#endif
+ 	R4600_HIT_CACHEOP_WAR_IMPL;
+ 	protected_writeback_dcache_line(addr & ~(dc_lsize - 1));
+ 	protected_flush_icache_line(addr & ~(ic_lsize - 1));
+diff -urN linux.old/include/asm-mips/r4kcache.h linux.dev/include/asm-mips/r4kcache.h
+--- linux.old/include/asm-mips/r4kcache.h	2005-05-28 17:42:06.000000000 +0200
++++ linux.dev/include/asm-mips/r4kcache.h	2005-05-29 18:34:46.000000000 +0200
+@@ -15,6 +15,25 @@
+ #include <asm/asm.h>
+ #include <asm/cacheops.h>
+ 
++#ifdef CONFIG_BCM4710
++#define BCM4710_DUMMY_RREG() (((sbconfig_t *)(KSEG1ADDR(SB_ENUM_BASE + SBCONFIGOFF)))->sbimstate)
++
++#define BCM4710_FILL_TLB(addr) (*(volatile unsigned long *)(addr))
++#define BCM4710_PROTECTED_FILL_TLB(addr) ({ unsigned long x; get_dbe(x, (volatile unsigned long *)(addr)); })
++
++#define cache_op(op,addr)						\
++	BCM4710_DUMMY_RREG();						\
++	__asm__ __volatile__(						\
++	"	.set	noreorder				\n"	\
++	"	.set	mips3\n\t				\n"	\
++	"	cache	%0, %1					\n"	\
++	"	.set	mips0					\n"	\
++	"	.set	reorder"					\
++	:								\
++	: "i" (op), "m" (*(unsigned char *)(addr)))
++
++#else
++
+ #define cache_op(op,addr)						\
+ 	__asm__ __volatile__(						\
+ 	"	.set	noreorder				\n"	\
+@@ -24,6 +43,8 @@
+ 	"	.set	reorder"					\
+ 	:								\
+ 	: "i" (op), "m" (*(unsigned char *)(addr)))
++#endif
++
+ 
+ static inline void flush_icache_line_indexed(unsigned long addr)
+ {
+@@ -47,6 +68,10 @@
+ 
+ static inline void flush_dcache_line(unsigned long addr)
+ {
++
++#ifdef CONFIG_BCM4710	
++	BCM4710_DUMMY_RREG();
++#endif
+ 	cache_op(Hit_Writeback_Inv_D, addr);
+ }
+ 
+@@ -196,7 +221,13 @@
+ 	unsigned long start = page;
+ 	unsigned long end = start + PAGE_SIZE;
+ 
++#ifdef CONFIG_BCM4710	
++	BCM4710_FILL_TLB(start);
++#endif
+ 	do {
++#ifdef CONFIG_BCM4710	
++		BCM4710_DUMMY_RREG();
++#endif
+ 		cache16_unroll32(start,Hit_Invalidate_I);
+ 		start += 0x200;
+ 	} while (start < end);
+@@ -291,8 +322,12 @@
+ 	unsigned long ws, addr;
+ 
+ 	for (ws = 0; ws < ws_end; ws += ws_inc) 
+-		for (addr = start; addr < end; addr += 0x400) 
++		for (addr = start; addr < end; addr += 0x400) {
++#ifdef CONFIG_BCM4710	
++			BCM4710_DUMMY_RREG();
++#endif
+ 			cache32_unroll32(addr|ws,Index_Writeback_Inv_D);
++		}
+ }
+ 
+ static inline void blast_dcache32_page(unsigned long page)
+@@ -300,6 +335,9 @@
+ 	unsigned long start = page;
+ 	unsigned long end = start + PAGE_SIZE;
+ 
++#ifdef CONFIG_BCM4710	
++	__asm__ __volatile__("nop;nop;nop;nop");
++#endif
+ 	do {
+ 		cache32_unroll32(start,Hit_Writeback_Inv_D);
+ 		start += 0x400;
+@@ -339,6 +377,9 @@
+ 	unsigned long start = page;
+ 	unsigned long end = start + PAGE_SIZE;
+ 
++#ifdef CONFIG_BCM4710	
++	BCM4710_FILL_TLB(start);
++#endif
+ 	do {
+ 		cache32_unroll32(start,Hit_Invalidate_I);
+ 		start += 0x400;