Blackfin: update tiny board settings (voltage/default env)

The tinyboards like to run at a little lower voltage than the default, and
they prefer to boot over the network.  For the latter, extend the common
code a little to make this easier.

Also fix the cm-bf527 env sector size while we're in here to reflect the
flash that is actually in use.

Signed-off-by: Harald Krapfenbauer <Harald.Krapfenbauer@bluetechnix.at>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/configs/cm-bf527.h b/include/configs/cm-bf527.h
index 3d41bd1..ad1dd12 100644
--- a/include/configs/cm-bf527.h
+++ b/include/configs/cm-bf527.h
@@ -38,6 +38,9 @@
 /* Values can range from 1-15						*/
 #define CONFIG_SCLK_DIV			4
 
+/* Decrease core voltage */
+#define CONFIG_VR_CTL_VAL (VLEV_120 | CLKBUFOE | FREQ_1000)
+
 
 /*
  * Memory Settings
@@ -105,7 +108,7 @@
 #define CONFIG_ENV_ADDR		0x20008000
 #define CONFIG_ENV_OFFSET	0x8000
 #define CONFIG_ENV_SIZE		0x8000
-#define CONFIG_ENV_SECT_SIZE	0x20000
+#define CONFIG_ENV_SECT_SIZE	0x8000
 #define CONFIG_ENV_IS_EMBEDDED_IN_LDR
 
 
@@ -125,6 +128,10 @@
 #define CONFIG_MISC_INIT_R
 #define CONFIG_RTC_BFIN
 #define CONFIG_UART_CONSOLE	0
+#define CONFIG_BOOTCOMMAND	"run flashboot"
+#define FLASHBOOT_ENV_SETTINGS \
+	"flashboot=flread 20040000 1000000 300000;" \
+	"bootm 0x1000000\0"
 
 
 /*