From df4f41261cf9da3cb1681c7495c51badfe1d999c Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Date: Tue, 16 Aug 2016 14:49:20 +0300
Subject: archs38: Introduce images for SD-cards

Historically on ARC we started from initramfs-based images because:
 a) It was much easier to debug especially when toolchain and other
    components were changing quite dynamically
 b) It was our usual approach for embedded Linux

But now with ARC port of Lede/OpenWRT getting more stable and mature
we're ready for more real-life scenarios with FS permanently stored
on SD-card. This essentially benefits from ability to setup devices
that survive reboots with all settings and extra packages kept in place.

Still we keep an ability to build images with initramfs.
This allows us to use storage-less simulators for testing still.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: John Crispin <john@phrozen.org>
---
 target/linux/archs38/image/Makefile | 80 +++++++++++++++++++++++++------------
 1 file changed, 55 insertions(+), 25 deletions(-)

(limited to 'target/linux/archs38/image/Makefile')

diff --git a/target/linux/archs38/image/Makefile b/target/linux/archs38/image/Makefile
index f5dce288bd..505ed02625 100644
--- a/target/linux/archs38/image/Makefile
+++ b/target/linux/archs38/image/Makefile
@@ -14,43 +14,73 @@ define Build/calculate-ep
 	$(eval KERNEL_ENTRY=$(shell $(KERNEL_CROSS)readelf -h $(LINUX_DIR)/vmlinux | grep "Entry point address" | grep -o 0x.*))
 endef
 
-define Build/patch-dtb
-	$(call Image/BuildDTB,$(DTS_DIR)/$(DEVICE_DTS).dts,$@.dtb)
-	$(STAGING_DIR_HOST)/bin/patch-dtb $@ $@.dtb
+define Build/build-dtb
+	$(call Image/BuildDTB,$(DTS_DIR)/$(DEVICE_DTS).dts,$(DTS_DIR)/$(DEVICE_DTS).dtb)
 endef
 
-# Shared device definition: applies to every defined device
-define Device/Default
-  PROFILES = Default $$(DEVICE_PROFILE)
-  KERNEL_DEPENDS = $$(wildcard ../dts/$$(DEVICE_DTS).dts)
-  DEVICE_PROFILE :=
+define Build/patch-dtb
+	$(STAGING_DIR_HOST)/bin/patch-dtb $@ $(DTS_DIR)/$(DEVICE_DTS).dtb
 endef
-DEVICE_VARS += DEVICE_PROFILE
 
+ifneq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),)
+# Root FS built-in
 define Device/vmlinux
-  KERNEL_SUFFIX := .elf
-  KERNEL_INITRAMFS := kernel-bin | patch-dtb
-  KERNEL_INITRAMFS_NAME = vmlinux-initramfs.elf
-endef
-
-define Device/uImage
-  KERNEL_SUFFIX := -uImage
-  KERNEL_INITRAMFS := kernel-bin | patch-dtb | calculate-ep | uImage none
-  KERNEL_LOADADDR := 0x80000000
+	KERNEL_SUFFIX := .elf
+	KERNEL := kernel-bin | build-dtb | patch-dtb
+	KERNEL_INITRAMFS_NAME = vmlinux-initramfs.elf
 endef
 
-define Device/axs103
-	$(call Device/uImage)
-	DEVICE_PROFILE := axs103
-	DEVICE_DTS := axs103_idu
-endef
-TARGET_DEVICES += axs103
-
 define Device/nsim_hs
 	$(call Device/vmlinux)
 	DEVICE_PROFILE := nsim_hs
 	DEVICE_DTS := nsim_hs_idu
 endef
 TARGET_DEVICES += nsim_hs
+else
+# Root FS on SD-card
+KERNEL_LOADADDR := 0x80000000
+DEVICE_DTS_LIST:= axs103_idu
+FAT32_BLOCK_SIZE=1024
+FAT32_BLOCKS=$(shell echo $$(($(CONFIG_AXS10X_SD_BOOT_PARTSIZE)*1024*1024/$(FAT32_BLOCK_SIZE))))
+
+define Image/Build/SDCard
+	rm -f $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img
+	mkdosfs $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img -C $(FAT32_BLOCKS)
+	mkimage -C none -A arc -T script -d uEnv.txt $(BIN_DIR)/uEnv.scr
+	mcopy -i $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img $(BIN_DIR)/uEnv.scr ::boot.scr
+	mcopy -i $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img $(DTS_DIR)/*.dtb ::
+	mcopy -i $(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img $(BIN_DIR)/$(IMG_PREFIX)-uImage ::uImage
+
+	./gen_axs10x_sdcard_img.sh \
+		$(BIN_DIR)/$(IMG_PREFIX)-$(PROFILE)-sdcard-vfat-$(1).img \
+		$(KDIR_TMP)/$(IMG_PREFIX)-$(PROFILE)-boot.img \
+		$(KDIR)/root.$(1) \
+		$(CONFIG_AXS10X_SD_BOOT_PARTSIZE) \
+		$(CONFIG_TARGET_ROOTFS_PARTSIZE)
+
+ifneq ($(CONFIG_TARGET_IMAGES_GZIP),)
+	gzip -f9n $(BIN_DIR)/$(IMG_PREFIX)-$(PROFILE)-sdcard-vfat-$(1).img
+endif
+endef
+
+define Image/BuildKernel
+	# Build unified uImage
+	$(call Build/calculate-ep)
+	$(call Image/BuildKernel/MkuImage, \
+		none, $(KERNEL_LOADADDR), $(KERNEL_ENTRY), \
+		$(KDIR)/vmlinux, \
+		$(BIN_DIR)/$(IMG_PREFIX)-uImage \
+	)
+
+	# Build .dtb for all boards we may run on
+	$(foreach DEVICE_DTS,$(shell echo $(DEVICE_DTS_LIST)), $(call Build/build-dtb))
+endef
+
+define Image/Build
+	$(call Image/Build/$(1),$(1))
+	$(call Image/Build/SDCard,$(1))
+	dd if=$(KDIR)/root.$(1) of=$(BIN_DIR)/$(IMG_PREFIX)-root.$(1) bs=128k conv=sync
+endef
+endif
 
 $(eval $(call BuildImage))
-- 
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