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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0+
#
# script to generate FIT image source for RISC-V boards with OpenSBI
# and, optionally, multiple device trees (given on the command line).
#
# usage: $0 [<dt_name> [<dt_name] ...]
[ -z "$OPENSBI" ] && OPENSBI="fw_dynamic.bin"
if [ -z "$UBOOT_LOAD_ADDR" ]; then
UBOOT_LOAD_ADDR="$(grep "^CONFIG_SYS_TEXT_BASE=" .config | awk 'BEGIN{FS="="} {print $2}')"
fi
if [ -z "$OPENSBI_LOAD_ADDR" ]; then
OPENSBI_LOAD_ADDR="$(grep "^CONFIG_SPL_OPENSBI_LOAD_ADDR=" .config | awk 'BEGIN{FS="="} {print $2}')"
fi
if [ ! -f $OPENSBI ]; then
echo "WARNING: OpenSBI binary \"$OPENSBI\" not found, resulting binary is not functional." >&2
OPENSBI=/dev/null
fi
cat << __HEADER_EOF
/dts-v1/;
/ {
description = "Configuration to load OpenSBI before U-Boot";
images {
uboot {
description = "U-Boot";
data = /incbin/("u-boot-nodtb.bin");
type = "standalone";
os = "U-Boot";
arch = "riscv";
compression = "none";
load = <$UBOOT_LOAD_ADDR>;
};
opensbi {
description = "RISC-V OpenSBI";
data = /incbin/("$OPENSBI");
type = "firmware";
os = "opensbi";
arch = "riscv";
compression = "none";
load = <$OPENSBI_LOAD_ADDR>;
entry = <$OPENSBI_LOAD_ADDR>;
};
__HEADER_EOF
cnt=1
for dtname in $*
do
cat << __FDT_IMAGE_EOF
fdt_$cnt {
description = "$(basename $dtname .dtb)";
data = /incbin/("$dtname");
type = "flat_dt";
compression = "none";
};
__FDT_IMAGE_EOF
cnt=$((cnt+1))
done
cat << __CONF_HEADER_EOF
};
configurations {
default = "config_1";
__CONF_HEADER_EOF
if [ $# -eq 0 ]; then
cat << __CONF_SECTION_EOF
config_1 {
description = "U-Boot FIT";
firmware = "opensbi";
loadables = "uboot";
};
__CONF_SECTION_EOF
else
cnt=1
for dtname in $*
do
cat << __CONF_SECTION_EOF
config_$cnt {
description = "$(basename $dtname .dtb)";
firmware = "opensbi";
loadables = "uboot";
fdt = "fdt_$cnt";
};
__CONF_SECTION_EOF
cnt=$((cnt+1))
done
fi
cat << __ITS_EOF
};
};
__ITS_EOF
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