as3525v2: Move codec into iram freeing 1MB for the audio buffer and also a small decoding speedup (iram seems to be 50% faster than dram when boosted and the same when unboosed). 32k is still reserved for the core and can be readjusted if needed. Codecs don't appear to ever need the 1MB (usually <350k only).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25491 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 7 insertions, 5 deletions

diff --git a/firmware/target/arm/as3525/app.lds b/firmware/target/arm/as3525/app.lds
index 56a4b20fa6..f9d070e60d 100644
--- a/firmware/target/arm/as3525/app.lds
+++ b/firmware/target/arm/as3525/app.lds
@@ -23,8 +23,10 @@ STARTUP(target/arm/crt0.o)
 /* End of the audio buffer, where the codec buffer starts */
 #define ENDAUDIOADDR  (DRAMORIG + DRAMSIZE)
 
+#define CODEC_BUFFER_FILLS_IRAM defined(AMS_LOWMEM) || (CONFIG_CPU == AS3525v2)
 
-#ifdef AMS_LOWMEM
+#if CODEC_BUFFER_FILLS_IRAM
+/* Entire codec buffer in IRAM */
 #define DRAMSIZE (DRAM_SIZE - STUBOFFSET - PLUGINSIZE - TTB_SIZE)
 #define CODECORIG (IRAMORIG + (IRAM_SIZE - CODEC_SIZE))
 #define IRAMSIZE (IRAM_SIZE - CODEC_SIZE)
@@ -36,7 +38,7 @@ STARTUP(target/arm/crt0.o)
 
 
 /* Where the codec buffer ends, and the plugin buffer starts */
-#ifdef AMS_LOWMEM
+#if CODEC_BUFFER_FILLS_IRAM
 #define ENDADDR (ENDAUDIOADDR)
 #else
 #define ENDADDR (ENDAUDIOADDR + CODECSIZE)
@@ -44,7 +46,7 @@ STARTUP(target/arm/crt0.o)
 
 MEMORY
 {
-#ifdef AMS_LOWMEM
+#if CODEC_BUFFER_FILLS_IRAM
     CODEC_IRAM : ORIGIN = CODECORIG, LENGTH = CODEC_SIZE
 #endif
     IRAM : ORIGIN = IRAMORIG, LENGTH = IRAMSIZE
@@ -110,7 +112,7 @@ SECTIONS
         _iend = .;
     } > IRAM
 
-    .init CODECORIG : 
+    .init ENDADDR : 
     {
         . = ALIGN(4);
         _initstart = .;
@@ -154,7 +156,7 @@ SECTIONS
     {
         codecbuf = .;
         _codecbuf = .;
-#ifdef AMS_LOWMEM
+#if CODEC_BUFFER_FILLS_IRAM
     } > CODEC_IRAM
 #else
     } > DRAM