[PATCH u-boot][PATCH v4 3/3] Enable FIT image support and FDT loading for AST2400/AST2500

[Rick Altherr]

FIT is the modern U-Boot native image format for kernels, device trees,
and ramdisks.  Enabling FIT only compiles in support for the image
format.  For these devices, the kernel+dtb and ramdisk are loaded from
separate locations in flash and can be any mix of legacy or FIT images.
When using FIT images, the dtb is stored as a separate entry that
requires CONFIG_OF_LIBFDT to load it into RAM and pass it to the kernel.

U-Boot enables EFI support by default but it only builds once FIT
support is enabled.  EFI support adds ~13k to the binary and is
currently unused for any Aspeed platforms.  Explicitly disable EFI
support now that FIT support is enabled.

Tested under qemu with both legacy and FIT kernel+dtb images for
palmetto and witherspoon.

Signed-off-by: Rick Altherr <raltherr at google.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---

Changes in v4: None
Changes in v3:
- Fix capitalization of U-Boot in commit messages

Changes in v2:
- Reduce binary size by disabling EFI support

 configs/ast_g4_ncsi_defconfig | 5 +++++
 configs/ast_g4_phy_defconfig  | 5 +++++
 configs/ast_g5_ncsi_defconfig | 5 +++++
 configs/ast_g5_phy_defconfig  | 5 +++++
 4 files changed, 20 insertions(+)

diff --git a/configs/ast_g4_ncsi_defconfig b/configs/ast_g4_ncsi_defconfig
index 4ee71c5..ab4907c 100644
--- a/configs/ast_g4_ncsi_defconfig
+++ b/configs/ast_g4_ncsi_defconfig
@@ -1,7 +1,12 @@
 CONFIG_ARM=y
 CONFIG_TARGET_AST_G4=y
 CONFIG_SYS_PROMPT="ast# "
+CONFIG_CMD_BOOTEFI=n
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
+CONFIG_EFI_LOADER=n
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_OF_LIBFDT=y
 CONFIG_SPI_FLASH=y
 CONFIG_SYS_NS16550=y
diff --git a/configs/ast_g4_phy_defconfig b/configs/ast_g4_phy_defconfig
index 61fd69b..21a56c4 100644
--- a/configs/ast_g4_phy_defconfig
+++ b/configs/ast_g4_phy_defconfig
@@ -2,7 +2,12 @@ CONFIG_ARM=y
 CONFIG_TARGET_AST_G4=y
 CONFIG_ASPEED_NET_PHY=y
 CONFIG_SYS_PROMPT="ast# "
+CONFIG_CMD_BOOTEFI=n
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
+CONFIG_EFI_LOADER=n
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_OF_LIBFDT=y
 CONFIG_SPI_FLASH=y
 CONFIG_SYS_NS16550=y
diff --git a/configs/ast_g5_ncsi_defconfig b/configs/ast_g5_ncsi_defconfig
index 6d11afb..7cd4fd1 100644
--- a/configs/ast_g5_ncsi_defconfig
+++ b/configs/ast_g5_ncsi_defconfig
@@ -1,7 +1,12 @@
 CONFIG_ARM=y
 CONFIG_TARGET_AST_G5=y
 CONFIG_SYS_PROMPT="ast# "
+CONFIG_CMD_BOOTEFI=n
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
+CONFIG_EFI_LOADER=n
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_OF_LIBFDT=y
 CONFIG_SPI_FLASH=y
 CONFIG_SYS_NS16550=y
diff --git a/configs/ast_g5_phy_defconfig b/configs/ast_g5_phy_defconfig
index 20f62e0..c686dd2 100644
--- a/configs/ast_g5_phy_defconfig
+++ b/configs/ast_g5_phy_defconfig
@@ -2,7 +2,12 @@ CONFIG_ARM=y
 CONFIG_TARGET_AST_G5=y
 CONFIG_ASPEED_NET_PHY=y
 CONFIG_SYS_PROMPT="ast# "
+CONFIG_CMD_BOOTEFI=n
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
+CONFIG_EFI_LOADER=n
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_OF_LIBFDT=y
 CONFIG_SPI_FLASH=y
 CONFIG_SYS_NS16550=y
-- 
2.8.0.rc3.226.g39d4020