When starting from flash, we have to wait for the disk to get ready. (Quite a new situation ;-)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3803 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 17 insertions, 7 deletions

diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c
index 46c2bc8645..f4e1da48c4 100644
--- a/firmware/drivers/ata.c
+++ b/firmware/drivers/ata.c
@@ -424,8 +424,18 @@ extern void ata_flush(void)
 
 static int check_registers(void)
 {
-    if ( ATA_STATUS & STATUS_BSY )
-        return -1;
+    /* When starting from Flash, the disk is not yet ready when we get here. */
+    /* Crude first fix is to block and poll here for a while, 
+       can we do better? */
+    int time = 0;
+    while ((ATA_STATUS & STATUS_BSY))
+    {
+        if (time >= HZ*10) /* timeout, disk is not coming up */
+            return -1;
+
+        sleep(HZ/10);
+        time += HZ/10;
+    };
     
     ATA_NSECTOR = 0xa5;
     ATA_SECTOR  = 0x5a;
@@ -797,14 +807,14 @@ unsigned short* ata_get_identify(void)
 
 int ata_init(void)
 {
-    mutex_init(&ata_mtx);
+        mutex_init(&ata_mtx);
 
     led(false);
 
-        /* Port A setup */
-        PAIOR |= 0x0200; /* output for ATA reset */
-        PADR |= 0x0200; /* release ATA reset */
-        PACR2 &= 0xBFFF; /* GPIO function for PA7 (IDE enable) */
+    /* Port A setup */
+    PAIOR |= 0x0200; /* output for ATA reset */
+    PADR |= 0x0200; /* release ATA reset */
+    PACR2 &= 0xBFFF; /* GPIO function for PA7 (IDE enable) */
 
     ata_enable(true);