Stuff

diff --git a/apps/main.c b/apps/main.c
index a912e07..6edae5f 100644
--- a/apps/main.c
+++ b/apps/main.c
@@ -106,6 +106,8 @@
 #include "cuesheet.h"
 
 /*#define AUTOROCK*/ /* define this to check for "autostart.rock" on boot */
+volatile unsigned char IDATA_ATTR CPU_MESSAGE=0;
+volatile unsigned char IDATA_ATTR CPU_REPLY=0;
 
 const char appsversion[]=APPSVERSION;
 
@@ -542,6 +544,28 @@ static void init(void)
 }
 
 #ifdef CPU_PP
+void cop_rolo(void) ICODE_ATTR;
+void cop_rolo(void)
+{
+    /* Invalidate cache */
+    outl(inl(0xf000f044) | 0x6, 0xf000f044);
+    while ((inl(0x6000c000) & 0x8000) != 0) {}
+    
+    /* Disable cache */
+    outl(0x0, 0x6000C000);
+
+    /* Wait while RoLo loads the image into SDRAM */
+    /* TODO: Accept checksum failure gracefully */
+    while(CPU_MESSAGE == 1) {}
+
+    CPU_REPLY = 1;
+
+    asm volatile(
+        "mov   r0, #0x10000000   \n"
+        "mov   pc, r0            \n"
+    );
+}
+
 void cop_main(void)
 {
 /* This is the entry point for the coprocessor
@@ -550,9 +574,15 @@ void cop_main(void)
    platforms which support it.
 
    At present all we do is send the COP to sleep if anything wakes it. */
-    while(1) {
+    long i;
+    unsigned long* memmapregs = (unsigned long*)0xf000f000;
+
+    (*(volatile unsigned long*)(0x60004134)) |= 0x10; /* Set mailbox interrupt */
+
+    while(CPU_MESSAGE != COP_REBOOT) {
         COP_CTL = PROC_SLEEP;
     }
+    cop_rolo();
 }
 #endif
 
diff --git a/firmware/export/config.h b/firmware/export/config.h
index 1a3e0be..ac2ee68 100644
--- a/firmware/export/config.h
+++ b/firmware/export/config.h
@@ -280,6 +280,8 @@
 
 #define NUM_CORES 1
 #define CURRENT_CORE 0
+
+#define COP_REBOOT 0x00000001
 #else
 #define NUM_CORES 1
 #define CURRENT_CORE 0
diff --git a/firmware/export/pp5020.h b/firmware/export/pp5020.h
index d304895..1cc23e9 100644
--- a/firmware/export/pp5020.h
+++ b/firmware/export/pp5020.h
@@ -25,6 +25,17 @@
 #define CPU_CTL          (*(volatile unsigned long *)(0x60007000))
 #define COP_CTL          (*(volatile unsigned long *)(0x60007004))
 
+/* Mailboxes */
+/* Each processor has two mailboxes it can write to and two which
+   it can read from.  We define the first to be for sending messages
+   and the second for replying to messages */
+#if 0
+#define CPU_MESSAGE      (*(volatile unsigned long *)(0x60001000))
+#define COP_MESSAGE      (*(volatile unsigned long *)(0x60001004))
+#define CPU_REPLY        (*(volatile unsigned long *)(0x60001008))
+#define COP_REPLY        (*(volatile unsigned long *)(0x6000100c))
+#endif
+
 #define GPIOA_ENABLE     (*(volatile unsigned long *)(0x6000d000))
 #define GPIOB_ENABLE     (*(volatile unsigned long *)(0x6000d004))
 #define GPIOC_ENABLE     (*(volatile unsigned long *)(0x6000d008))
diff --git a/firmware/rolo.c b/firmware/rolo.c
index 84b3280..cc97632 100644
--- a/firmware/rolo.c
+++ b/firmware/rolo.c
@@ -63,6 +63,8 @@ void rolo_restart(const unsigned char* source, unsigned char* dest,
     long i;
     unsigned char* localdest = dest;
 #if (CONFIG_CPU==PP5020) || (CONFIG_CPU==PP5024)
+    extern volatile unsigned char CPU_MESSAGE;
+    extern volatile unsigned char CPU_REPLY;
     unsigned long* memmapregs = (unsigned long*)0xf000f000;
 #endif
 
@@ -78,6 +80,10 @@ void rolo_restart(const unsigned char* source, unsigned char* dest,
         : : "a"(dest)
     );
 #elif (CONFIG_CPU==PP5020) || (CONFIG_CPU==PP5024)
+
+    CPU_MESSAGE = 0;
+    COP_CTL = PROC_WAKE;
+
     /* Flush cache */
     outl(inl(0xf000f044) | 0x2, 0xf000f044);
     while ((inl(0x6000c000) & 0x8000) != 0) {}
@@ -85,10 +91,13 @@ void rolo_restart(const unsigned char* source, unsigned char* dest,
     /* Disable cache */
     outl(0x0, 0x6000C000);
 
+    
     /* Reset the memory mapping registers to zero */
     for (i=0;i<8;i++)
         memmapregs[i]=0;
 
+    while(CPU_REPLY != 1) {}
+
     asm volatile(
         "mov   r0, #0x10000000   \n"
         "mov   pc, r0            \n"
@@ -117,6 +126,9 @@ int rolo_load(const char* filename)
     long file_length;
     unsigned short checksum,file_checksum;
 #endif
+#ifdef CPU_PP
+    extern volatile unsigned char CPU_MESSAGE;
+#endif
     unsigned char* ramstart = (void*)&loadaddress;
 
     lcd_clear_display();
@@ -150,6 +162,10 @@ int rolo_load(const char* filename)
 
     /* Rockbox checksums are big-endian */
     file_checksum = betoh32(file_checksum);
+#ifdef CPU_PP
+    CPU_MESSAGE = COP_REBOOT;
+    COP_CTL = PROC_WAKE;
+#endif
 
     lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);