Optimized U-Boot startup

FunKey/board/funkey/boot.cmd

@@ -1,4 +1,4 @@
-setenv bootargs console=ttyS0,115200 panic=5 rootwait fbcon=map:10 fbcon=font:VGA8x8 root=/dev/mmcblk0p2 earlyprintk rootfstype=ext4 rootflags=commit=120,data=writeback,barrier=0,journal_async_commit rw resume=/dev/mmcblk0p2 resume_offset=88064 hibernate=nocompress
+setenv bootargs console=ttyS0,115200 panic=5 rootwait fbcon=map:10 fbcon=font:VGA8x8 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=120,data=writeback,barrier=0,journal_async_commit rw resume=/dev/mmcblk0p2 resume_offset=88064 hibernate=nocompress quiet
 load mmc 0:1 0x41000000 uImage
 load mmc 0:1 0x41800000 sun8i-v3s-funkey.dtb
 bootm 0x41000000 - 0x41800000

FunKey/board/funkey/rootfs-overlay/etc/fw_env.config

@@ -0,0 +1,40 @@
+# Configuration file for fw_(printenv/setenv) utility.
+# Up to two entries are valid, in this case the redundant
+# environment sector is assumed present.
+# Notice, that the "Number of sectors" is not required on NOR and SPI-dataflash.
+# Futhermore, if the Flash sector size is omitted, this value is assumed to
+# be the same as the Environment size, which is valid for NOR and SPI-dataflash
+# Device offset must be prefixed with 0x to be parsed as a hexadecimal value.
+
+# NOR example
+# MTD device name	Device offset	Env. size	Flash sector size	Number of sectors
+#/dev/mtd1		0x0000		0x4000		0x4000
+#/dev/mtd2		0x0000		0x4000		0x4000
+
+# MTD SPI-dataflash example
+# MTD device name	Device offset	Env. size	Flash sector size	Number of sectors
+#/dev/mtd5		0x4200		0x4200
+#/dev/mtd6		0x4200		0x4200
+
+# NAND example
+#/dev/mtd0		0x4000		0x4000		0x20000			2
+
+# On a block device a negative offset is treated as a backwards offset from the
+# end of the device/partition, rather than a forwards offset from the start.
+
+# Block device example
+#/dev/mmcblk0		0xc0000		0x20000
+#/dev/mmcblk0		-0x20000	0x20000
+/dev/mmcblk0		0x88000		0x20000
+
+# VFAT example
+#/boot/uboot.env	0x0000          0x4000
+
+# UBI volume
+#/dev/ubi0_0		0x0		0x1f000		0x1f000
+#/dev/ubi0_1		0x0		0x1f000		0x1f000
+
+# UBI volume by name
+#/dev/ubi0:env		0x0		0x1f000		0x1f000
+#/dev/ubi0:env-redund	0x0		0x1f000		0x1f000
+

FunKey/board/funkey/rootfs-overlay/etc/u-boot.env

@@ -0,0 +1,20 @@
+arch=arm
+args_mmc=setenv bootargs console=ttyS0,115200 panic=5 rootwait fbcon=map:10 fbcon=font:VGA8x8 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=120,data=writeback,barrier=0,journal_async_commit rw resume=/dev/mmcblk0p2 resume_offset=88064 hibernate=nocompress quiet
+baudrate=115200
+board=sunxi
+board_name=sunxi
+bootcmd=run args_mmc; run loadfdt; run loadimage; bootm ${loadaddr} - ${fdtaddr}
+bootdelay=0
+console=ttyS0,115200
+cpu=armv7
+fdt_high=0xffffffff
+fdtaddr=0x41800000
+loadaddr=0x41000000
+loadfdt=load mmc 0:1 ${fdtaddr} sun8i-v3s-funkey.dtb
+loadimage=load mmc 0:1 ${loadaddr} uImage
+serial#=12c000026a14b94a
+soc=sunxi
+stderr=serial@01c28000
+stdin=serial@01c28000
+stdout=serial@01c28000
+verify=n

FunKey/board/funkey/rootfs-overlay/usr/sbin/fw_saveenv

@@ -0,0 +1,59 @@
+#!/bin/bash
+
+# Uncomment the following line to get debug info
+set -xv
+
+fw_saveenv () {
+
+    # Check arguments
+    if [ $# -ne 1 ]; then
+	echo "usage: fw_saveenv filename" >&2 | tee /dev/kmsg
+	exit 1
+    fi
+
+    # Save the input file name
+    local input_file=${1}
+
+    # Read the fw_env config file
+    local config=$(sed -e 's/#.*$//' -e '/^$/d' /etc/fw_env.config)
+    set ${config}
+    local of=${1}
+    local seek=$((${2} / 1024))
+    local count=$((${3} / 1024))
+
+    # Create 2 temporary files
+    local tmp_file=$(mktemp /tmp/fw_saveenv.XXXXXX)
+    local raw_file=$(mktemp /tmp/fw_saveenv.XXXXXX)
+    local raw2_file=$(mktemp /tmp/fw_saveenv.XXXXXX)
+
+    # Convert provided file to null-terminated string blob
+    cat ${input_file} | tr '\n' '\0' > ${tmp_file}
+
+    # Compute blob length in bytes
+    local length=$(stat --printf="%s" ${tmp_file})
+
+    # Compute the padding size
+    let length=${count}*1024-4-${length}
+
+    # Pad blob with zeros up to the total size
+    dd if=/dev/zero bs=1 count=${length} >>${tmp_file} 2>/dev/null
+
+    # Compute the CRC32 for the padded blob and store it into the final file
+    cat ${tmp_file} | gzip -1 | tail -c 8 | head -c 4 | \
+	hexdump -e '1/4 "%08x" "\n"' | xxd -r -p > ${raw_file}
+
+    # Convert CRC32 to little endian
+    tac -rs '.' ${raw_file} ${raw2_file}
+
+    # Append the binary blob to the final file
+    cat ${tmp_file} >> ${raw2_file}
+
+    # Write the final file to the raw device
+    #dd if=${raw2_file} of=${1} bs=1k count=$((${3} / 1024)) seek=$((${2} / 1024))
+
+    # Remove the temporay files
+    rm ${tmp_file} ${raw_file} ${raw2_file}
+    return 0
+}
+
+fw_saveenv $*

FunKey/board/funkey/uboot.config

@@ -1,24 +1,31 @@
 CONFIG_ARM=y
 CONFIG_ARCH_SUNXI=y
+# CONFIG_SPL_LIBDISK_SUPPORT is not set
+# CONFIG_SPL_POWER_SUPPORT is not set
 # CONFIG_ARMV7_NONSEC is not set
 CONFIG_IDENT_STRING=" FunKey"
 # CONFIG_PRE_CONSOLE_BUFFER is not set
 CONFIG_MACH_SUN8I_V3S=y
 CONFIG_DRAM_CLK=360
 CONFIG_DRAM_ZQ=14779
-# CONFIG_VIDEO is not set
+CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:87,ri:40,up:31,lo:13,hs:1,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_BL_PWM="PB4"
+# CONFIG_VIDEO_LCD_BL_PWM_ACTIVE_LOW is not set
 CONFIG_DEFAULT_DEVICE_TREE="sun8i-v3s-funkey"
 CONFIG_LOCALVERSION="-funkey"
 # CONFIG_DISTRO_DEFAULTS is not set
 CONFIG_BOOTDELAY=0
+# CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
-CONFIG_SYS_STDIO_DEREGISTER=y
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y
-CONFIG_CMD_BOOTZ=y
+CONFIG_SYS_PROMPT="FunKey> "
+# CONFIG_CMD_BOOTD is not set
+# CONFIG_CMD_ELF is not set
 # CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_XIMG is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_NET is not set
@@ -27,4 +34,4 @@ CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
-CONFIG_REGEX=y
+# CONFIG_EFI_LOADER is not set

FunKey/configs/funkey_defconfig

@@ -58,6 +58,8 @@ BR2_PACKAGE_SDL_MIXER=y
 BR2_PACKAGE_SDL_SOUND=y
 BR2_PACKAGE_SDL_SOUND_PLAYSOUND=y
 BR2_PACKAGE_SDL_TTF=y
+BR2_PACKAGE_UBOOT_TOOLS=y
+BR2_PACKAGE_UBOOT_TOOLS_MKENVIMAGE=y
 BR2_PACKAGE_ZLIB=y
 BR2_PACKAGE_DHCPCD=y
 BR2_PACKAGE_DROPBEAR=y