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#!/bin/bash
SCRIPTDIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
source $SCRIPTDIR/common.sh
FEL=fel
echo "BUILDROOT_OUTPUT_DIR = $BUILDROOT_OUTPUT_DIR"
NAND_ERASE_BB=false
if [ "$1" == "erase-bb" ]; then
NAND_ERASE_BB=true
fi
PATH=$PATH:$BUILDROOT_OUTPUT_DIR/host/usr/bin
TMPDIR=`mktemp -d -t chipflashXXXXXX`
PADDED_SPL="$TMPDIR/sunxi-padded-spl"
PADDED_SPL_SIZE=0
UBOOT_SCRIPT="$TMPDIR/uboot.scr"
UBOOT_SCRIPT_MEM_ADDR=0x43100000
UBOOT_SCRIPT_SRC="$TMPDIR/uboot.cmds"
SPL="$BUILDROOT_OUTPUT_DIR/images/sunxi-spl.bin"
SPL_MEM_ADDR=0x43000000
UBOOT="$BUILDROOT_OUTPUT_DIR/images/u-boot-dtb.bin"
PADDED_UBOOT="$TMPDIR/padded-uboot"
PADDED_UBOOT_SIZE=0xc0000
UBOOT_MEM_ADDR=0x4a000000
UBI="$BUILDROOT_OUTPUT_DIR/images/rootfs.ubi"
UBI_MEM_ADDR=0x4b000000
UBI_SIZE=`filesize $UBI | xargs printf "0x%08x"`
prepare_images() {
local in=$SPL
local out=$PADDED_SPL
if [ -e "$out" ]; then
rm "$out"
fi
# The BROM cannot read 16K pages: it only reads 8k of data at most.
# Split the SPL image in 8k chunks and pad each chunk with 8k of random
# data to limit the impact of repeated patterns on the MLC chip.
dd if=$in of=$out bs=8k count=1 skip=0 conv=sync
dd if=/dev/urandom of=$out bs=8k count=1 seek=1 conv=sync
dd if=$in of=$out bs=8k count=1 skip=1 seek=2 conv=sync
dd if=/dev/urandom of=$out bs=8k count=1 seek=3 conv=sync
dd if=$in of=$out bs=8k count=1 skip=2 seek=4 conv=sync
dd if=/dev/urandom of=$out bs=8k count=1 seek=5 conv=sync
PADDED_SPL_SIZE=`filesize $out | xargs printf "0x%08x"`
# Align the u-boot image on a page boundary
dd if=$UBOOT of=$PADDED_UBOOT bs=16k conv=sync
UBOOT_SIZE=`filesize $PADDED_UBOOT | xargs printf "0x%08x"`
dd if=/dev/urandom of=$PADDED_UBOOT seek=$((UBOOT_SIZE / 0x4000)) bs=16k count=$(((PADDED_UBOOT_SIZE - UBOOT_SIZE) / 0x4000))
}
prepare_uboot_script() {
if [ "$NAND_ERASE_BB" = true ] ; then
echo "nand scrub -y 0x0 0x200000000" > "${UBOOT_SCRIPT_SRC}"
else
echo "nand erase 0x0 0x200000000" > "${UBOOT_SCRIPT_SRC}"
fi
echo "sunxi_nand config spl" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x0 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x100000 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x200000 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x300000 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x400000 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x500000 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x600000 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $SPL_MEM_ADDR 0x700000 $PADDED_SPL_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "sunxi_nand config default" >> "${UBOOT_SCRIPT_SRC}"
echo "nand write $UBOOT_MEM_ADDR 0x800000 $PADDED_UBOOT_SIZE" >> "${UBOOT_SCRIPT_SRC}"
echo "setenv bootargs root=ubi0:rootfs rootfstype=ubifs rw earlyprintk ubi.mtd=4" >> "${UBOOT_SCRIPT_SRC}"
echo "setenv bootcmd 'source \${scriptaddr}; nand slc-mode on; mtdparts; ubi part UBI; ubifsmount ubi0:rootfs; ubifsload \$fdt_addr_r /boot/sun5i-r8-chip.dtb; ubifsload \$kernel_addr_r /boot/zImage; bootz \$kernel_addr_r - \$fdt_addr_r'" >> "${UBOOT_SCRIPT_SRC}"
echo "saveenv" >> "${UBOOT_SCRIPT_SRC}"
echo "echo going to fastboot mode" >>"${UBOOT_SCRIPT_SRC}"
echo "fastboot 0" >>"${UBOOT_SCRIPT_SRC}"
echo "echo " >>"${UBOOT_SCRIPT_SRC}"
echo "echo *****************[ BOOT ]*****************" >>"${UBOOT_SCRIPT_SRC}"
echo "echo " >>"${UBOOT_SCRIPT_SRC}"
echo "boot" >>"${UBOOT_SCRIPT_SRC}"
mkimage -A arm -T script -C none -n "flash CHIP" -d "$UBOOT_SCRIPT_SRC" "$UBOOT_SCRIPT"
}
wait_for_fastboot() {
echo -n "waiting for fastboot...";
for ((i=$TIMEOUT; i>0; i--)) {
if [[ ! -z "$(fastboot devices)" ]]; then
echo "OK";
return 0;
fi
echo -n ".";
sleep 1
}
echo "TIMEOUT";
return 1
}
echo == preparing images ==
prepare_images
prepare_uboot_script
echo == upload the SPL to SRAM and execute it ==
${FEL} spl $SPL
sleep 1 # wait for DRAM initialization to complete
echo == upload spl ==
${FEL} write $SPL_MEM_ADDR "$PADDED_SPL"
echo == upload u-boot ==
${FEL} write $UBOOT_MEM_ADDR "$PADDED_UBOOT"
echo == upload u-boot script ==
${FEL} write $UBOOT_SCRIPT_MEM_ADDR "$UBOOT_SCRIPT"
echo == execute the main u-boot binary ==
${FEL} exe $UBOOT_MEM_ADDR
echo == waiting for fastboot ==
if wait_for_fastboot; then
fastboot -S 0 -u flash UBI "${BUILDROOT_OUTPUT_DIR}/images/rootfs.ubi"
fastboot continue
else
rm -rf "${TMPDIR}"
exit 1
fi