imx233:fuze+: major memory and usb rework

- now identity map dram uncached and have a cached and buffered virtual alias
- rework dma to handle virtual to physical pointers conversion
- fix lcd frame pointer
- implement usb detection properly
- implement bootloader usb properly
- allow the bootloader to disable MMC windowing (useful for recovery)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30432 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 15 insertions, 1 deletions

diff --git a/firmware/target/arm/imx233/boot.lds b/firmware/target/arm/imx233/boot.lds
index 8e4f2016df..fb6ffdcf23 100644
--- a/firmware/target/arm/imx233/boot.lds
+++ b/firmware/target/arm/imx233/boot.lds
@@ -9,7 +9,8 @@ STARTUP(target/arm/imx233/crt0.o)
 MEMORY
 {
     IRAM : ORIGIN = IRAM_ORIG, LENGTH = IRAM_SIZE
-    DRAM : ORIGIN = DRAM_ORIG, LENGTH = DRAM_SIZE - TTB_SIZE - FRAME_SIZE
+    DRAM : ORIGIN = CACHED_DRAM_ADDR, LENGTH = DRAM_SIZE - TTB_SIZE - FRAME_SIZE
+    UNCACHED_DRAM : ORIGIN = UNCACHED_DRAM_ADDR, LENGTH = DRAM_SIZE - TTB_SIZE - FRAME_SIZE
 }
 
 SECTIONS
@@ -57,10 +58,23 @@ SECTIONS
         stackend = .;
     } > DRAM
 
+    /* treat .bss and .ncbss as a single section */
     .bss (NOLOAD) :
     {
         _edata = .;
         *(.bss*);
+    } > DRAM
+
+    /* align on cache size boundary to avoid mixing cached and noncached stuff */
+    .ncbss . - CACHED_DRAM_ADDR + UNCACHED_DRAM_ADDR (NOLOAD) :
+    {
+        . = ALIGN(CACHEALIGN_SIZE);
+        *(.ncbss*)
+        . = ALIGN(CACHEALIGN_SIZE);
+    } AT> DRAM
+
+    .bssendadr . - UNCACHED_DRAM_ADDR + CACHED_DRAM_ADDR (NOLOAD) :
+    {
         _end = .;
     } > DRAM
 }