Sansa AMS: Centralise mapping of RAM and IRAM in as3525.h via #defines. This will hopefully make ongoing mmu work easier as less places need to be changed.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21000 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 18 insertions, 0 deletions

diff --git a/firmware/export/as3525.h b/firmware/export/as3525.h
index 388df2a925..326a7610bb 100644
--- a/firmware/export/as3525.h
+++ b/firmware/export/as3525.h
@@ -22,10 +22,28 @@
 
 #define UART_CHANNELS 1
 
+
+#if MEMORYSIZE <= 2
+/* we put the codec buffer in IRAM */
+#define AMS_LOWMEM
+#endif
+/* these addresses are valid after mapping through the MMU */
+#define DRAM_ORIG 0x30000000
+#define IRAM_ORIG 0x0
+
+#define DRAM_SIZE (MEMORYSIZE * 0x100000)
+#define IRAM_SIZE 0x50000
+
+
 /* AS352X only supports 512 Byte HW ECC */
 #define ECCSIZE 512
 #define ECCBYTES 3
 
+/* AS352X MMU Page Table Entries */
+/* to be implemented */
+#define TTB_SIZE                  0x0           /* Mimics OF  */
+#define TTB_BASE_ADDR             (DRAM_ORIG + DRAM_SIZE - TTB_SIZE)
+
 
 /* AS352X device base addresses */