149 lines
2.7 KiB
Plaintext
149 lines
2.7 KiB
Plaintext
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#!/bin/sh
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mount -t proc proc /proc
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mount -t sysfs sysfs /sys
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mount -t devtmpfs none /dev
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exec < /dev/console > /dev/console 2>&1
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for parm in $(cat /proc/cmdline); do
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case $parm in
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ramfs)
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RAMFS_MODE=1
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;;
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root=*)
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ROOT_DEVICE=`echo $parm | awk -F\= '{print $2}'`
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;;
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console=*)
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CONSOLE_DEVICE=`echo $parm | awk -F\= '{print $2}' | awk -F\, '{print $1}'`
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;;
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gpt=*)
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GPT_SUPPORT=`echo $parm | awk -F\= '{print $2}'`
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;;
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esac
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done
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if [ "x$ROOT_DEVICE" = "x" ]; then
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ROOT_DEVICE=autoconfig
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fi
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echo [$0]: "getty is $CONSOLE_DEVICE"
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echo [$0]: RootDevice is \"$ROOT_DEVICE\" , GPT_SUPPORT=$GPT_SUPPORT
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#set the default device for autoconfig
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if [ "x$GPT_SUPPORT" = "x1" ]; then
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NAND_DEF_DEVICE=nand0p5
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SDMMC_DEF_DEVICE=mmcblk0p5
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else
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NAND_DEF_DEVICE=nandd
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SDMMC_DEF_DEVICE=mmcblk0p7
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fi
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# $1: the name of block device
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wait_for_ready()
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{
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CNT=10
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while true; do
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if [ -b $1 ]; then
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return 0
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fi
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echo [$0]: Wait $1 ready ...
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CNT=`expr $CNT - 1`
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if [ $CNT -eq 0 ]; then
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echo [$0]: $1 is not available!
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return 1
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fi
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sleep 1
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done
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}
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# $1: The block device
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do_mount()
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{
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# e2fsck -y $1
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# mount -o rw,noatime,nodiratime,norelatime,noauto_da_alloc,barrier=0,data=ordered -t ext4 $1 /mnt
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mount -t squashfs $1 /mnt
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if [ $? -ne 0 ]; then
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echo [$0]: Failed to mount $1!
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fi
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}
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load_nand()
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{
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echo [$0]: Try to load Nand ...
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# NAND_MODULE=/lib/modules/$(uname -r)/nand.ko
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# if [ ! -f $NAND_MODULE ]; then
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# echo [$0]: $NAND_MODULE does not exist!
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# return 1
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# fi
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# insmod $NAND_MODULE
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# if [ $? -ne 0 ]; then
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# echo [$0]: $NAND_MODULE is invalid!
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# return 2
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# fi
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wait_for_ready $1
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if [ $? -eq 0 ]; then
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do_mount $1
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fi
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}
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load_emmc()
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{
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echo [$0]: Try to load EMMC ...
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wait_for_ready $1
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if [ $? -eq 0 ]; then
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do_mount $1
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fi
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}
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load_nor()
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{
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echo [$0]: Try to load Nor ...
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wait_for_ready $1
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if [ $? -eq 0 ]; then
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do_mount $1
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fi
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}
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case $ROOT_DEVICE in
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/dev/nand*|/dev/system)
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load_nand $ROOT_DEVICE
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;;
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/dev/mmc*)
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load_emmc $ROOT_DEVICE
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;;
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/dev/mtd*)
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load_nor $ROOT_DEVICE
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;;
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autoconfig*)
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sleep 1;
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echo [$0]: default device $SDMMC_DEF_DEVICE $NAND_DEF_DEVICE
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if cat /proc/partitions|grep "$SDMMC_DEF_DEVICE" >/dev/null;then
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magic_num=$(hexdump -s 1292 -n 2 -x /dev/$SDMMC_DEF_DEVICE|head -1|awk '{print $2 }')
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echo $magic_num|grep "f30a" >/dev/null
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if [ $? -eq 0 ]; then
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echo [$0]: "magic_num[f30a] match!!!"
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else
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load_emmc /dev/$SDMMC_DEF_DEVICE
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fi
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else
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load_nand /dev/$NAND_DEF_DEVICE
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fi
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;;
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*)
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echo [$0]: "Use default type"
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;;
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esac
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[ -x /mnt/pseudo_init ] && mount -o noatime,move /dev /mnt/dev && exec switch_root /mnt /pseudo_init
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[ -x /mnt/sbin/init ] && exec switch_root /mnt /sbin/init
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#/sbin/getty -L $CONSOLE_DEVICE 115200 vt100 -n -l /bin/sh
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/bin/sh
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