diff -ru rockbox-19602-dma/firmware/target/arm/ata-pp5020.c rockbox-19602-dmabl/firmware/target/arm/ata-pp5020.c
--- rockbox-19602-dma/firmware/target/arm/ata-pp5020.c	2008-12-27 22:47:31.950000000 -0500
+++ rockbox-19602-dmabl/firmware/target/arm/ata-pp5020.c	2008-12-27 22:48:12.473600000 -0500
@@ -170,10 +170,14 @@
 
     IDE_DMA_CONTROL |= 2;
     IDE_DMA_LENGTH = bytes - 4;
-    /* Rockbox remaps RAM from 0x10000000 to 0.  The DMA
-       hardware needs a physical address.
-     */
-    IDE_DMA_ADDR = (unsigned long)addr + 0x10000000;
+
+#ifndef BOOTLOADER
+    if ((unsigned long)addr < DRAM_START)
+        /* Rockbox remaps DRAM to start at 0 */
+        IDE_DMA_ADDR = (unsigned long)addr + DRAM_START;
+    else
+#endif
+        IDE_DMA_ADDR = (unsigned long)addr;
 
     if (write)
         IDE_DMA_CONTROL &= ~IDE_DMA_CONTROL_READ;
diff -ru rockbox-19602-dma/firmware/target/arm/ata-target.h rockbox-19602-dmabl/firmware/target/arm/ata-target.h
--- rockbox-19602-dma/firmware/target/arm/ata-target.h	2008-12-27 22:47:31.950000000 -0500
+++ rockbox-19602-dmabl/firmware/target/arm/ata-target.h	2008-12-27 22:54:21.542400000 -0500
@@ -92,10 +92,16 @@
 
 /* Maximum multi-word DMA mode supported by the controller */
 #define ATA_MAX_MWDMA 2
+
+#ifndef BOOTLOADER    
 /* The PP5020 supports UDMA 4, but it needs cpu boosting and doesn't
-   improve test_disk results.
+   improve test_disk results.  UDMA 2 is stable at 30 Mhz.
  */
 #define ATA_MAX_UDMA 2
+#else
+/* The bootloader runs at 24 Mhz and needs a slower mode */
+#define ATA_MAX_UDMA 1
+#endif
 
 void ata_dma_set_mode(unsigned char mode);
 bool ata_dma_setup(void *addr, unsigned long bytes, bool write);