[U-Boot] [PATCH 03/10 v5] common/Makefile: Add new symbol CONFIG_SPL_ENV_SUPPORT for environment in SPL

[ying.zhang at freescale.com]

From: Ying Zhang <b40530 at freescale.com>

There will need the environment in SPL for reasons other than network
support (in particular, hwconfig contains info for how to set up DDR).

Add a new symbol CONFIG_SPL_ENV_SUPPORT to replace CONFIG_SPL_NET_SUPPORT
for environment in common/Makefile.

Signed-off-by: Ying Zhang <b40530 at freescale.com>
---
Compared with the original version, Changed as below:
1. Split from "boot from SD card/SPI flash with SPL".
2. Added explanation for CONFIG_SPL_ENV_SUPPORT.
3. Add symbol CONFIG_SPL_ENV_SUPPORT in include/configs/a3m071.h.
4. Add symbol CONFIG_SPL_ENV_IS_IN_NOWHERE in include/configs/am335x_evm.h
   and include/configs/am335x_evm.h

 README                       |    9 +++++++++
 common/Makefile              |   27 +++++++++++++++++----------
 include/configs/a3m071.h     |    1 +
 include/configs/am335x_evm.h |    1 +
 include/configs/pcm051.h     |    1 +
 5 files changed, 29 insertions(+), 10 deletions(-)

diff --git a/README b/README
index 2a7e4c1..50ddd1a 100644
--- a/README
+++ b/README
@@ -3022,6 +3022,15 @@ FIT uImage format:
 		CONFIG_SPL_LIBGENERIC_SUPPORT
 		Support for lib/libgeneric.o in SPL binary
 
+		CONFIG_SPL_ENV_SUPPORT
+		Support for the environment operating in SPL binary
+
+		CONFIG_SPL_NET_SUPPORT
+		Support for the net/libnet.o in SPL binary.
+		It only co-exist with CONFIG_ENV_IS_NOWHERE in the SPL. it
+		conflicts with SPL env from storage medium specified by
+		CONFIG_ENV_IS_xxx.
+
 		CONFIG_SPL_PAD_TO
 		Image offset to which the SPL should be padded before appending
 		the SPL payload. By default, this is defined as
diff --git a/common/Makefile b/common/Makefile
index 3ba4316..6c44a23 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -44,13 +44,11 @@ COBJS-$(CONFIG_SYS_GENERIC_BOARD) += board_r.o
 COBJS-y += cmd_boot.o
 COBJS-$(CONFIG_CMD_BOOTM) += cmd_bootm.o
 COBJS-y += cmd_help.o
-COBJS-y += cmd_nvedit.o
 COBJS-y += cmd_version.o
 
 # environment
 COBJS-y += env_attr.o
 COBJS-y += env_callback.o
-COBJS-y += env_common.o
 COBJS-y += env_flags.o
 COBJS-$(CONFIG_ENV_IS_IN_DATAFLASH) += env_dataflash.o
 COBJS-$(CONFIG_ENV_IS_IN_EEPROM) += env_eeprom.o
@@ -216,18 +214,27 @@ COBJS-$(CONFIG_CMD_GPT) += cmd_gpt.o
 endif
 
 ifdef CONFIG_SPL_BUILD
-COBJS-y += cmd_nvedit.o
-COBJS-y += env_common.o
 COBJS-$(CONFIG_ENV_IS_IN_FLASH) += env_flash.o
 COBJS-$(CONFIG_SPL_YMODEM_SUPPORT) += xyzModem.o
-COBJS-$(CONFIG_SPL_NET_SUPPORT) += cmd_nvedit.o
-COBJS-$(CONFIG_SPL_NET_SUPPORT) += env_attr.o
-COBJS-$(CONFIG_SPL_NET_SUPPORT) += env_callback.o
-COBJS-$(CONFIG_SPL_NET_SUPPORT) += env_common.o
-COBJS-$(CONFIG_SPL_NET_SUPPORT) += env_flags.o
-COBJS-$(CONFIG_SPL_NET_SUPPORT) += env_nowhere.o
 COBJS-$(CONFIG_SPL_NET_SUPPORT) += miiphyutil.o
+# environment
+COBJS-$(CONFIG_SPL_ENV_SUPPORT) += env_attr.o
+COBJS-$(CONFIG_SPL_ENV_SUPPORT) += env_flags.o
+COBJS-$(CONFIG_SPL_ENV_SUPPORT) += env_callback.o
+ifneq ($(CONFIG_SPL_NET_SUPPORT),y)
+COBJS-$(CONFIG_ENV_IS_NOWHERE) += env_nowhere.o
+COBJS-$(CONFIG_ENV_IS_IN_MMC) += env_mmc.o
+COBJS-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o
+COBJS-$(CONFIG_ENV_IS_IN_SPI_FLASH) += env_sf.o
+COBJS-$(CONFIG_ENV_IS_IN_FLASH) += env_flash.o
+else
+COBJS-y += env_nowhere.o
+endif
 endif
+# core command
+COBJS-y += cmd_nvedit.o
+#environment
+COBJS-y += env_common.o
 COBJS-$(CONFIG_BOUNCE_BUFFER) += bouncebuf.o
 COBJS-y += console.o
 COBJS-y += dlmalloc.o
diff --git a/include/configs/a3m071.h b/include/configs/a3m071.h
index e9af825..8f29229 100644
--- a/include/configs/a3m071.h
+++ b/include/configs/a3m071.h
@@ -426,6 +426,7 @@
 #define CONFIG_SPL_BSS_MAX_SIZE		(64 << 10)
 
 #define CONFIG_SPL_OS_BOOT
+#define CONFIG_SPL_ENV_SUPPORT
 /* Place patched DT blob (fdt) at this address */
 #define CONFIG_SYS_SPL_ARGS_ADDR	0x01800000
 
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index 737e19e..d1246f7 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -355,6 +355,7 @@
 #define CONFIG_SPL_GPIO_SUPPORT
 #define CONFIG_SPL_YMODEM_SUPPORT
 #define CONFIG_SPL_NET_SUPPORT
+#define CONFIG_SPL_ENV_SUPPORT
 #define CONFIG_SPL_NET_VCI_STRING	"AM335x U-Boot SPL"
 #define CONFIG_SPL_ETH_SUPPORT
 #define CONFIG_SPL_SPI_SUPPORT
diff --git a/include/configs/pcm051.h b/include/configs/pcm051.h
index 2ecd105..9b16c47 100644
--- a/include/configs/pcm051.h
+++ b/include/configs/pcm051.h
@@ -231,6 +231,7 @@
 #define CONFIG_SPL_GPIO_SUPPORT
 #define CONFIG_SPL_YMODEM_SUPPORT
 #define CONFIG_SPL_NET_SUPPORT
+#define CONFIG_SPL_ENV_SUPPORT
 #define CONFIG_SPL_NET_VCI_STRING	"pcm051 U-Boot SPL"
 #define CONFIG_SPL_ETH_SUPPORT
 #define CONFIG_SPL_SPI_SUPPORT
-- 
1.7.0.4