From bd42d31e5eb1eed61da6c25064de1eed23c7163e Mon Sep 17 00:00:00 2001
From: Linus Nielsen Feltzing <linus@haxx.se>
Date: Thu, 31 Mar 2005 08:47:02 +0000
Subject: RoLo now works on the iRiver

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6238 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/rolo.c | 91 +++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 75 insertions(+), 16 deletions(-)

(limited to 'firmware/rolo.c')

diff --git a/firmware/rolo.c b/firmware/rolo.c
index fccc9f38da..ceb70791cf 100644
--- a/firmware/rolo.c
+++ b/firmware/rolo.c
@@ -29,8 +29,8 @@
 #include "string.h"
 #include "buffer.h"
 
-#if (CONFIG_CPU != MCF5249) && (CONFIG_CPU != TCC730)
-/* FIX: this doesn't work on iRiver or Gmini yet */
+#if CONFIG_CPU != TCC730
+/* FIX: this doesn't work on Gmini yet */
 
 #define IRQ0_EDGE_TRIGGER 0x80
 
@@ -46,11 +46,36 @@ static void rolo_error(const char *text)
     lcd_stop_scroll();
 }
 
+#if CONFIG_CPU == SH7034
 /* these are in assembler file "descramble.S" */
 extern unsigned short descramble(const unsigned char* source,
                                  unsigned char* dest, int length);
 extern void rolo_restart(const unsigned char* source, unsigned char* dest,
                          int length);
+#else
+void rolo_restart(const unsigned char* source, unsigned char* dest,
+                  long length)  __attribute__ ((section (".icode")));
+void rolo_restart(const unsigned char* source, unsigned char* dest,
+                         long length)
+{
+    long i;
+
+    for(i = 0;i < length;i++)
+        *dest++ = *source++;
+
+#if CONFIG_CPU == MCF5249
+    asm volatile (" move.l #0,%d0");
+    asm volatile (" move.l #0x30000000,%d0");
+    asm volatile (" movec.l %d0,%vbr");
+    asm volatile (" move.l 0x30000000,%sp");
+    asm volatile (" move.l 0x30000004,%a0");
+    asm volatile (" jmp (%a0)");
+#endif
+}
+#endif
+
+/* This is assigned in the linker control file */
+extern unsigned long loadaddress;
 
 /***************************************************************************
  *
@@ -61,10 +86,15 @@ extern void rolo_restart(const unsigned char* source, unsigned char* dest,
 int rolo_load(const char* filename)
 {
     int fd;
-    unsigned long length;
-    unsigned long file_length;
+    long length;
+#ifdef IRIVER_H100
+    int i;
+    unsigned long checksum,file_checksum;
+#else
+    long file_length;
     unsigned short checksum,file_checksum;
-    unsigned char* ramstart = (void*)0x09000000;
+#endif
+    unsigned char* ramstart = (void*)&loadaddress;
 
     lcd_clear_display();
     lcd_puts(0, 0, "ROLO...");
@@ -79,8 +109,40 @@ int rolo_load(const char* filename)
         return -1;
     }
 
+    length = filesize(fd) - FIRMWARE_OFFSET_FILE_DATA;
+
+#if CONFIG_CPU == MCF5249
+    /* Read and save checksum */
+    lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET);
+    if (read(fd, &file_checksum, 4) != 4) {
+        rolo_error("Error Reading checksum");
+        return -1;
+    }
+    lseek(fd, FIRMWARE_OFFSET_FILE_DATA, SEEK_SET);
+
+    if (read(fd, mp3buf, length) != length) {
+        rolo_error("Error Reading File");
+        return -1;
+    }
+
+    checksum = 0;
+    
+    for(i = 0;i < length;i++) {
+        checksum += mp3buf[i];
+    }
+
+    /* Verify checksum against file header */
+    if (checksum != file_checksum) {
+        rolo_error("Checksum Error");
+        return -1;
+    }
+
+    lcd_puts(0, 1, "Executing     ");
+    lcd_update();
+
+    set_irq_level(HIGHEST_IRQ_LEVEL);
+#else
     /* Read file length from header and compare to real file length */
-    length=lseek(fd,0,SEEK_END)-FIRMWARE_OFFSET_FILE_DATA;
     lseek(fd, FIRMWARE_OFFSET_FILE_LENGTH, SEEK_SET);
     if(read(fd, &file_length, 4) != 4) {
         rolo_error("Error Reading File Length");
@@ -90,7 +152,7 @@ int rolo_load(const char* filename)
         rolo_error("File length mismatch");
         return -1;
     }
-
+    
     /* Read and save checksum */
     lseek(fd, FIRMWARE_OFFSET_FILE_CRC, SEEK_SET);
     if (read(fd, &file_checksum, 2) != 2) {
@@ -114,9 +176,8 @@ int rolo_load(const char* filename)
     lcd_update();
 
     checksum = descramble(mp3buf + length, mp3buf, length);
-
+    
     /* Verify checksum against file header */
-
     if (checksum != file_checksum) {
         rolo_error("Checksum Error");
         return -1;
@@ -125,10 +186,8 @@ int rolo_load(const char* filename)
     lcd_puts(0, 1, "Executing     ");
     lcd_update();
 
-    /* Disable interrupts */
-    asm("mov #15<<4,r6\n"
-        "ldc r6,sr");
-
+    set_irq_level(HIGHEST_IRQ_LEVEL);
+    
     /* Calling these 2 initialization routines was necessary to get the
        the origional Archos version of the firmware to load and execute. */
     system_init();           /* Initialize system for restart */
@@ -141,12 +200,12 @@ int rolo_load(const char* filename)
     defined(ARCHOS_FMRECORDER)
     PAIOR = 0x0FA0;
 #endif
-
+#endif
     rolo_restart(mp3buf, ramstart, length);
 
     return 0; /* this is never reached */
 }
-#else  /* (CONFIG_CPU != MCF5249) && (CONFIG_CPU != TCC730) */
+#else  /* CONFIG_CPU != TCC730 */
 int rolo_load(const char* filename)
 {
     /* dummy */
@@ -154,4 +213,4 @@ int rolo_load(const char* filename)
     return 0;
 }
 
-#endif /* ! (CONFIG_CPU != MCF5249) && (CONFIG_CPU != TCC730) */
+#endif /* ! CONFIG_CPU != TCC730 */
-- 
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