Optional dual-boot support in iAudio X5 and M5 bootloader, based on FS#5289.

In order to enable it, #define HAVE_DUALBOOT when building the bootloader.
Do not use the automatically created x5_fw.bin or m5_fw.bin, but use mkboot
to create a new firmware file from an OF x5_fw.bin resp. m5_fw.bin and
bootloader.bin.

The dual-boot bootloader boots the OF when pressing Play (main or remote) for
more than 3 seconds. Hold it a bit longer because the OF also checks buttons.
Short press boots rockbox.

As a bonus, the Play button read (for hold check) is done a bit earlier for
single-boot mode as well.



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30018 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 5 insertions, 1 deletions

diff --git a/firmware/target/coldfire/iaudio/boot.lds b/firmware/target/coldfire/iaudio/boot.lds
index 4cd0e8eaab..9288a6c18b 100644
--- a/firmware/target/coldfire/iaudio/boot.lds
+++ b/firmware/target/coldfire/iaudio/boot.lds
@@ -14,8 +14,12 @@ STARTUP(target/coldfire/crt0.o)
 #define IRAMSIZE 0x18000
 #endif
 #define DRAMORIG 0x31000000
+#ifdef HAVE_DUALBOOT
+#define FLASHORIG 0x00150000
+#else
 #define FLASHORIG 0x00010000
-#define FLASHSIZE 4M
+#endif
+#define FLASHSIZE 4M - FLASHORIG
 
 MEMORY
 {