M:Robe 500 - Enable ASM optimized ATA interface improving disk access speed.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23572 a1c6a512-1295-4272-9138-f99709370657

firmware/SOURCES

@@ -881,6 +881,7 @@ target/arm/tms320dm320/uart-dm320.c
 
 #ifdef MROBE_500
 #ifndef SIMULATOR
+target/arm/ata-as-arm.S
 target/arm/lcd-as-memframe.S
 target/arm/mmu-arm.S
 target/arm/tms320dm320/mrobe-500/adc-mr500.c

firmware/target/arm/ata-as-arm.S

@@ -38,6 +38,12 @@
 #elif defined(CREATIVE_ZVx) /* Zen Vision could have an other address */
     .text
     .equ    .ata_port, 0x50FEE000
+#elif defined(MROBE_500)
+    .text
+    .equ    .ata_port, 0x50400000
+#else
+    /* This isn't vaild, but it does it's job, not sure what this should be */
+    #error ata_port undefined!
 #endif
 
     .align  2

firmware/target/arm/tms320dm320/mrobe-500/ata-target.h

@@ -22,9 +22,18 @@
 #ifndef ATA_TARGET_H
 #define ATA_TARGET_H
 
+#if 0
 /* Plain C read & write loops */
 #define PREFER_C_READING
 #define PREFER_C_WRITING
+#else
+/* ASM optimized reading and writing */
+#define ATA_OPTIMIZED_READING
+#define ATA_OPTIMIZED_WRITING
+
+void copy_read_sectors(const unsigned char* buf, int wordcount);
+void copy_write_sectors(const unsigned char* buf, int wordcount);
+#endif
 
 #define ATA_IOBASE      0x50000000
 #define REGISTER_OFFSET (ATA_IOBASE+0x00400000) /* A21 = High */