Enable boot from SD for Sansa e200

Change-Id: I0940f2cd5fc914d6d5061b5798b1a636009649b7

2 files changed, 27 insertions, 3 deletions

diff --git a/firmware/export/config/sansae200.h b/firmware/export/config/sansae200.h
index e03784a204..59e531241f 100644
--- a/firmware/export/config/sansae200.h
+++ b/firmware/export/config/sansae200.h
@@ -8,6 +8,12 @@
 
 #define HW_SAMPR_CAPS       (SAMPR_CAP_48 | SAMPR_CAP_44 | SAMPR_CAP_32)
 
+/* Define if boot data from bootloader has been enabled for the target */
+#define HAVE_BOOTDATA
+
+/* define boot redirect file name allows booting from external drives */
+#define BOOT_REDIR "rockbox_main.e200"
+
 /* define this if you have recording possibility */
 #define HAVE_RECORDING
 
@@ -178,11 +184,10 @@
 #define FIRMWARE_OFFSET_FILE_CRC    0x0
 #define FIRMWARE_OFFSET_FILE_DATA   0x8
 
-#ifndef BOOTLOADER
 #define HAVE_MULTIDRIVE
+//#define HAVE_MULTIVOLUME
 #define NUM_DRIVES 2
-#define HAVE_HOTSWAP
-#endif
+#define HAVE_HOTSWAP /* required to access sd from bootloader */
 
 /* USB On-the-go */
 #define CONFIG_USBOTG USBOTG_ARC
diff --git a/firmware/export/mi4-loader.h b/firmware/export/mi4-loader.h
index 1b4a4b93b2..f66164ec2c 100644
--- a/firmware/export/mi4-loader.h
+++ b/firmware/export/mi4-loader.h
@@ -49,3 +49,22 @@ struct tea_key {
 
 int load_mi4(unsigned char* buf, const char* firmware, unsigned int buffer_size);
 const char *mi4_strerror(int8_t errno);
+
+#ifdef HAVE_MULTIBOOT /* defined by config.h */
+/* Check in root of this <volume> for rockbox_main.<playername>
+ * if this file empty or there is a single slash '/'
+ * buf = '<volume#>/<rootdir>/<firmware(name)>\0'
+ * If instead '/<*DIRECTORY*>' is supplied
+ * addpath will be set to this DIRECTORY buf =
+ * '/<volume#>/addpath/<rootdir>/<firmware(name)>\0'
+ * On error returns Negative number or 0
+ * On success returns bytes from snprintf
+ * and generated path will be placed in buf
+ * note: if supplied buffer is too small return will be
+ * the number of bytes that would have been written
+ */
+
+/* TODO needs mapped back to debug_menu if root redirect ever becomes a reality */
+int get_redirect_dir(char* buf, int buffer_size, int volume,
+                     const char* rootdir, const char* firmware);
+#endif