1 files changed, 125 insertions, 0 deletions
diff --git a/cpu/bf533/cache.S b/cpu/bf533/cache.S
new file mode 100644
index 0000000..1822d1f
--- /dev/null
+++ b/cpu/bf533/cache.S
@@ -0,0 +1,125 @@
+
+
+#define ASSEMBLY
+#include <asm/linkage.h>
+#include <asm/cpu/def_LPBlackfin.h>
+
+.text
+.align 2
+ENTRY(blackfin_icache_flush_range)
+	R2 = -32;
+	R2 = R0 & R2;
+	P0 = R2;
+	P1 = R1;
+	CSYNC;
+1:
+	IFLUSH[P0++];
+	CC = P0 < P1(iu);
+	IF CC JUMP 1b(bp);
+	IFLUSH[P0];
+	SSYNC;
+	RTS;
+
+ENTRY(blackfin_dcache_flush_range)
+	R2 = -32;
+        R2 = R0 & R2;
+        P0 = R2;
+        P1 = R1;
+        CSYNC;
+1:
+        FLUSH[P0++];
+        CC = P0 < P1(iu);
+        IF CC JUMP 1b(bp);
+        FLUSH[P0];
+        SSYNC;
+        RTS;
+
+ENTRY(_icache_invalidate)
+ENTRY(invalidate_entire_icache)
+        [--SP] = ( R7:5);
+                                                                                                                                                             
+        P0.L = (IMEM_CONTROL & 0xFFFF);
+        P0.H = (IMEM_CONTROL >> 16);
+        R7 = [P0];
+                                                                                                                                                             
+        /* Clear the IMC bit , All valid bits in the instruction
+         * cache are set to the invalid state
+         */
+        BITCLR(R7,IMC_P);
+        CLI R6;
+        SSYNC;          /* SSYNC required before invalidating cache. */
+        .align 8;
+        [P0] = R7;
+        SSYNC;
+        STI R6;
+                                                                                                                                                             
+        /* Configures the instruction cache agian */
+        R6 = (IMC | ENICPLB);
+        R7 = R7 | R6;
+                                                                                                                                                             
+        CLI R6;
+        SSYNC;          /* SSYNC required before writing to IMEM_CONTROL. */
+        .align 8;
+        [P0] = R7;
+        SSYNC;
+        STI R6;
+                                                                                                                                                             
+        ( R7:5) = [SP++];
+        RTS;
+
+/* Invalidate the Entire Data cache by
+ * clearing DMC[1:0] bits
+ */
+ENTRY(invalidate_entire_dcache)
+ENTRY(_dcache_invalidate)
+        [--SP] = ( R7:6);
+                                                                                                                                                             
+        P0.L = (DMEM_CONTROL & 0xFFFF);
+        P0.H = (DMEM_CONTROL >> 16);
+        R7 = [P0];
+                                                                                                                                                             
+        /* Clear the DMC[1:0] bits, All valid bits in the data
+         * cache are set to the invalid state
+         */
+        BITCLR(R7,DMC0_P);
+        BITCLR(R7,DMC1_P);
+        CLI R6;
+        SSYNC;          /* SSYNC required before writing to DMEM_CONTROL. */
+        .align 8;
+        [P0] = R7;
+        SSYNC;
+        STI R6;
+                                                                                                                                                             
+        /* Configures the data cache again */
+                                                                                                                                                             
+        R6 = (ACACHE_BCACHE | ENDCPLB | PORT_PREF0);
+        R7 = R7 | R6;
+                                                                                                                                                             
+        CLI R6;
+        SSYNC;          /* SSYNC required before writing to DMEM_CONTROL. */
+        .align 8;
+        [P0] = R7;
+        SSYNC;
+        STI R6;
+                                                                                                                                                             
+        ( R7:6) = [SP++];
+        RTS;
+
+ENTRY(blackfin_dcache_invalidate_range)
+	R2 = -32;
+	R2 = R0 & R2;
+	P0 = R2;
+	P1 = R1;
+	CSYNC;
+1:
+	FLUSHINV[P0++];
+	CC = P0 < P1 (iu);
+	IF CC JUMP 1b (bp);
+
+	/* If the data crosses a cache line, then we'll be pointing to
+	** the last cache line, but won't have flushed/invalidated it yet, so do
+	** one more.
+	*/
+	FLUSHINV[P0];
+	SSYNC;
+	RTS;