util/scripts/dts-to-fmd.sh

   1 #!/usr/bin/env bash
   2 #
   3 # Copyright 2015 Google Inc.
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; version 2 of the License.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 # converts a depthcharge fmap.dts into an fmaptool compatible .fmd format
  14 # requires fdt utilities (dtc, fdtget)
  15 #
  16 # $1 dts file name
  17 # result on stdout
  18 set -e
  19
  20 if [ $# -lt 1 ]; then
  21         echo "usage: $0 dts-file"
  22         exit 1
  23 fi
  24
  25 DTS=$1
  26 DTB=`mktemp`
  27
  28 # $1 node
  29 # $2 start variable name
  30 # $3 size variable name
  31 get_reg() {
  32         local t=`fdtget -t x $DTB $1 reg 2>/dev/null`
  33         if [ -n "$t" ]; then
  34                 export $2=0x`echo $t|cut -d' ' -f1`
  35                 export $3=0x`echo $t|cut -d' ' -f2`
  36         else
  37                 export $3=0x`fdtget -t x $DTB $1 size`
  38         fi
  39 }
  40
  41 dtc -O dtb -o $DTB $DTS
  42 get_reg /flash ROM_START ROM_SIZE
  43 printf "FLASH@${ROM_START} ${ROM_SIZE} {"
  44
  45 PREFIX="\t"
  46 REGION_START=-1
  47 REGION_SIZE=0
  48 CONTAINER_END=$(( ${ROM_SIZE} ))
  49 CONTAINER_END_STACK=${CONTAINER_END}
  50 CONTAINER_OFFSET=0
  51 CONTAINER_OFFSET_STACK=0
  52
  53 FMAP_REGIONS=`fdtget -l $DTB /flash`
  54 for region in $FMAP_REGIONS; do
  55         OLD_REGION_START=$REGION_START
  56         OLD_REGION_SIZE=$REGION_SIZE
  57         get_reg /flash/$region REGION_START REGION_SIZE
  58
  59         # determine if we're past an existing container
  60         while [ $(( ${REGION_START} )) -ge ${CONTAINER_END} ]; do
  61                 PREFIX=`printf "${PREFIX}" | cut -c2-`
  62                 printf "\n${PREFIX}}"
  63                 CONTAINER_END_STACK=`printf "${CONTAINER_END_STACK}" | cut -d' ' -f2-`
  64                 CONTAINER_OFFSET_STACK=`printf "${CONTAINER_OFFSET_STACK}" | cut -d' ' -f2-`
  65                 CONTAINER_END=`printf ${CONTAINER_END_STACK} | cut -d' ' -f1`
  66                 CONTAINER_OFFSET=`printf ${CONTAINER_OFFSET_STACK} | cut -d' ' -f1`
  67         done
  68
  69         # determine if we're inside a new container region now
  70         if [ $(( ${OLD_REGION_START} + ${OLD_REGION_SIZE} )) -gt $(( ${REGION_START} )) ]; then
  71                 PREFIX="\t${PREFIX}"
  72                 CONTAINER_END=$(( ${OLD_REGION_START} + ${OLD_REGION_SIZE} ))
  73                 CONTAINER_OFFSET=$(( ${OLD_REGION_START} ))
  74                 CONTAINER_END_STACK="${CONTAINER_END} ${CONTAINER_END_STACK}"
  75                 CONTAINER_OFFSET_STACK="${CONTAINER_OFFSET} ${CONTAINER_OFFSET_STACK}"
  76                 printf " {"
  77         fi
  78
  79         LOCAL_REGION_START=$(( ${REGION_START} - ${CONTAINER_OFFSET} ))
  80         LOCAL_REGION_START=`printf "0x%x" ${LOCAL_REGION_START}`
  81
  82         REGION_NAME=`fdtget $DTB /flash/$region label | tr '[a-z]-' '[A-Z]_'`
  83         REGION_TYPE=`fdtget $DTB /flash/$region type 2>/dev/null | cut -d'/' -f1`
  84
  85         # a CBFS region? if so, mark as such
  86         if [ "${REGION_TYPE}" = "blob cbfs" ]; then
  87                 IS_CBFS="(CBFS)"
  88         else
  89                 IS_CBFS=""
  90         fi
  91
  92         # special handling: rename BOOT_STUB to COREBOOT, mark them as CBFS
  93         if [ "${REGION_NAME}" = "BOOT_STUB" ]; then
  94                 REGION_NAME="COREBOOT"
  95         fi
  96         if [ "${REGION_NAME}" = "COREBOOT" ]; then
  97                 IS_CBFS="(CBFS)"
  98         fi
  99
 100         # also mark RW_LEGACY (seabios et al) as CBFS
 101         if [ "${REGION_NAME}" = "RW_LEGACY" ]; then
 102                 IS_CBFS="(CBFS)"
 103         fi
 104
 105         # special handling: COREBOOT region at 0, inject a 128K bootblock
 106         # The size may need changes to accommodate the chipsets,
 107         # but should work for now.
 108         if [ "${REGION_NAME}" = "COREBOOT" -a \
 109                 $(( ${REGION_START} )) -eq 0 ]; then
 110                 printf "\n${PREFIX}BOOTBLOCK@0 128K"
 111                 LOCAL_REGION_START=$(( ${LOCAL_REGION_START} + 128*1024 ))
 112                 LOCAL_REGION_START=`printf 0x%x ${LOCAL_REGION_START}`
 113                 REGION_SIZE=$(( ${REGION_SIZE} - 128*1024 ))
 114                 REGION_SIZE=`printf 0x%x ${REGION_SIZE}`
 115         fi
 116
 117         printf "\n${PREFIX}${REGION_NAME}${IS_CBFS}@${LOCAL_REGION_START} ${REGION_SIZE}"
 118 done
 119
 120 while [ -n "${PREFIX}" ]; do
 121         PREFIX=`printf "${PREFIX}" | cut -c2-`
 122         printf "\n${PREFIX}}"
 123 done
 124 printf "\n"
 125
 126 rm -f $DTB