From 5d7ab39024705d872221aab126b42e743674d672 Mon Sep 17 00:00:00 2001
From: Patrick Georgi <pgeorgi@chromium.org>
Date: Sat, 12 Dec 2015 00:23:15 +0100
Subject: chromeos: import Chrome OS fmaps

These are generated from depthcharge's board/*/fmap.dts using the
dts-to-fmd.sh script.

One special case is google/veyron's chromeos.fmd, which is used for a
larger set of boards - no problem since the converted fmd was the same
for all of them.

Set aside 128K for the bootblock on non-x86 systems (where the COREBOOT
region ends up at the beginning of flash). This becomes necessary
because we're working without a real cbfs master header (exists for
transition only), which carved out the space for the offset.

Change-Id: Ieeb33702d3e58e07e958523533f83da97237ecf1
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/12715
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
---
 util/scripts/dts-to-fmd.sh | 110 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100755 util/scripts/dts-to-fmd.sh

(limited to 'util/scripts/dts-to-fmd.sh')

diff --git a/util/scripts/dts-to-fmd.sh b/util/scripts/dts-to-fmd.sh
new file mode 100755
index 0000000000..3b87eee737
--- /dev/null
+++ b/util/scripts/dts-to-fmd.sh
@@ -0,0 +1,110 @@
+#!/bin/bash
+# converts a depthcharge fmap.dts into an fmaptool compatible .fmd format
+# requires fdt utilities (dtc, fdtget)
+#
+# $1 dts file name
+# result on stdout
+set -e
+
+if [ $# -lt 1 ]; then
+	echo "usage: $0 dts-file"
+	exit 1
+fi
+
+DTS=$1
+DTB=`mktemp`
+
+# $1 node
+# $2 start variable name
+# $3 size variable name
+get_reg() {
+	local t=`fdtget -t x $DTB $1 reg 2>/dev/null`
+	if [ -n "$t" ]; then
+		export $2=0x`echo $t|cut -d' ' -f1`
+		export $3=0x`echo $t|cut -d' ' -f2`
+	else
+		export $3=0x`fdtget -t x $DTB $1 size`
+	fi
+}
+
+dtc -O dtb -o $DTB $DTS
+get_reg /flash ROM_START ROM_SIZE
+printf "FLASH@${ROM_START} ${ROM_SIZE} {"
+
+PREFIX="\t"
+REGION_START=-1
+REGION_SIZE=0
+CONTAINER_END=$(( ${ROM_SIZE} ))
+CONTAINER_END_STACK=${CONTAINER_END}
+CONTAINER_OFFSET=0
+CONTAINER_OFFSET_STACK=0
+
+FMAP_REGIONS=`fdtget -l $DTB /flash`
+for region in $FMAP_REGIONS; do
+	OLD_REGION_START=$REGION_START
+	OLD_REGION_SIZE=$REGION_SIZE
+	get_reg /flash/$region REGION_START REGION_SIZE
+
+	# determine if we're past an existing container
+	while [ $(( ${REGION_START} )) -ge ${CONTAINER_END} ]; do
+		PREFIX=`printf "${PREFIX}" | cut -c2-`
+		printf "\n${PREFIX}}"
+		CONTAINER_END_STACK=`printf "${CONTAINER_END_STACK}" | cut -d' ' -f2-`
+		CONTAINER_OFFSET_STACK=`printf "${CONTAINER_OFFSET_STACK}" | cut -d' ' -f2-`
+		CONTAINER_END=`printf ${CONTAINER_END_STACK} | cut -d' ' -f1`
+		CONTAINER_OFFSET=`printf ${CONTAINER_OFFSET_STACK} | cut -d' ' -f1`
+	done
+
+	# determine if we're inside a new container region now
+	if [ $(( ${OLD_REGION_START} + ${OLD_REGION_SIZE} )) -gt $(( ${REGION_START} )) ]; then
+		PREFIX="\t${PREFIX}"
+		CONTAINER_END=$(( ${OLD_REGION_START} + ${OLD_REGION_SIZE} ))
+		CONTAINER_OFFSET=$(( ${OLD_REGION_START} ))
+		CONTAINER_END_STACK="${CONTAINER_END} ${CONTAINER_END_STACK}"
+		CONTAINER_OFFSET_STACK="${CONTAINER_OFFSET} ${CONTAINER_OFFSET_STACK}"
+		printf " {"
+	fi
+
+	LOCAL_REGION_START=$(( ${REGION_START} - ${CONTAINER_OFFSET} ))
+	LOCAL_REGION_START=`printf "0x%x" ${LOCAL_REGION_START}`
+
+	REGION_NAME=`fdtget $DTB /flash/$region label | tr '[a-z]-' '[A-Z]_'`
+	REGION_TYPE=`fdtget $DTB /flash/$region type 2>/dev/null | cut -d'/' -f1`
+
+	# a CBFS region? if so, mark as such
+	if [ "${REGION_TYPE}" = "blob cbfs" ]; then
+		IS_CBFS="(CBFS)"
+	else
+		IS_CBFS=""
+	fi
+
+	# special handling: rename BOOT_STUB to COREBOOT, mark them as CBFS
+	if [ "${REGION_NAME}" = "BOOT_STUB" ]; then
+		REGION_NAME="COREBOOT"
+	fi
+	if [ "${REGION_NAME}" = "COREBOOT" ]; then
+		IS_CBFS="(CBFS)"
+	fi
+
+	# special handling: COREBOOT region at 0, inject a 128K bootblock
+	# The size may need changes to accomodate the chipsets,
+	# but should work for now.
+	if [ "${REGION_NAME}" = "COREBOOT" -a \
+		$(( ${REGION_START} )) -eq 0 ]; then
+		printf "\n${PREFIX}BOOTBLOCK@0 128K"
+		LOCAL_REGION_START=$(( ${LOCAL_REGION_START} + 128*1024 ))
+		LOCAL_REGION_START=`printf 0x%x ${LOCAL_REGION_START}`
+		REGION_SIZE=$(( ${REGION_SIZE} - 128*1024 ))
+		REGION_SIZE=`printf 0x%x ${REGION_SIZE}`
+	fi
+
+	printf "\n${PREFIX}${REGION_NAME}${IS_CBFS}@${LOCAL_REGION_START} ${REGION_SIZE}"
+done
+
+while [ -n "${PREFIX}" ]; do
+	PREFIX=`printf "${PREFIX}" | cut -c2-`
+	printf "\n${PREFIX}}"
+done
+printf "\n"
+
+rm -f $DTB
-- 
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