firmware: Allow for selective board and environment builds.

diff --git a/src/target/firmware/Makefile b/src/target/firmware/Makefile
index 540ba23..7c6ba7a 100644 (file)
--- a/src/target/firmware/Makefile
+++ b/src/target/firmware/Makefile
@@ -12,13 +12,13 @@ RF_OBJS=rf/trf6151.o
 START=board/common/compal_ramload_start.S
 
 # List of all supported boards
-BOARDS=compal_e88 compal_e99
+BOARDS?=compal_e88 compal_e99
 compal_COMMON_OBJS=board/common/rffe_compal_dualband.o board/common/calypso_uart.o board/common/calypso_pwl.o
 compal_e88_OBJS=$(compal_COMMON_OBJS) board/compal_e88/init.o
 compal_e99_OBJS=$(compal_COMMON_OBJS) board/compal_e99/init.o
 
 # List of all supported execution environments
-ENVIRONMENTS=ramload osmoload
+ENVIRONMENTS?=ramload osmoload
 ramload_LDS=board/common/compal_ramload.lds
 osmoload_LDS=board/common/compal_osmoload.lds