Temporarily remove image RW.B due to code size.

To accomodate our growing code, image RW.B is removed so that RO and
RW.A can both have 60K space. This is just a temporary solution. Add
RW.B back when we have enough space for all three images.

Also add license header to firmware_image.lds.S so that repo does not
complain about it.

BUG=chrome-os-partner:8079
TEST=build image and run on proto-0.

Change-Id: I85b723f3e645c12fd89b189263ca44d58c4621eb
Signed-off-by: Vic Yang <victoryang@chromium.org>

chip/lm4/config.h

@@ -10,8 +10,12 @@
 #define CONFIG_RAM_BASE         0x20000000
 #define CONFIG_RAM_SIZE         0x00008000
 
+/* Disable RW.B firmware due to code size.
+ * TODO: Add it back when we can. */
+#define CONFIG_NO_RW_B
+
 /* Size of one firmware image in flash */
-#define CONFIG_FW_IMAGE_SIZE    (40 * 1024)
+#define CONFIG_FW_IMAGE_SIZE    (60 * 1024)
 #define CONFIG_FW_RO_OFF        0
 #define CONFIG_FW_A_OFF         CONFIG_FW_IMAGE_SIZE
 #define CONFIG_FW_B_OFF         (2 * CONFIG_FW_IMAGE_SIZE)

common/firmware_image.S

@@ -20,6 +20,8 @@
 .section .image.A, "ax"
 .incbin FW_IMAGE(A)
 
+#ifndef CONFIG_NO_RW_B
 /* Read Write firmware copy B */
 .section .image.B, "ax"
 .incbin FW_IMAGE(B)
+#endif

common/firmware_image.lds.S

@@ -1,3 +1,8 @@
+/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
 #include "config.h"
 
 OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
@@ -16,8 +21,10 @@ SECTIONS
     .image.A : AT(CONFIG_FW_A_OFF) {
         *(.image.A)
     } > FLASH
+#ifndef CONFIG_NO_RW_B
     . = ALIGN(CONFIG_FLASH_BANK_SIZE);
     .image.B : AT(CONFIG_FW_B_OFF) {
         *(.image.B)
     } > FLASH
+#endif
 }