S905系列的uboot分析
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S905系列的uboot分析
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Ubuntu18.04通過PL2303HX連接TTL
接線的連接
PL2303的3.3V懸空, TX接盒子RX, RX接盒子TX, GND接盒子GND
終端選擇
系統自帶pl2303的驅動, 可以通過dmesg看到對應的設備, 例如 /dev/ttyUSB0,
留意一下設備的用戶組, 例如我這個是dialout, 需要把自己這個用戶加入這個用戶組, 然后通過id檢查是否生效, 不生效的話試試退出, 或者重啟
sudo usermod -a -G dialout milton
連接TTL可以直接通過screen 命令, 例如下面的命令, 如果已經添加過dialout用戶組, 就不需要sudo, 后面的115200是波特率, 要退出要使用組合鍵Ctrl + A, K 會提示是否退出
screen /dev/ttyUSB0 115200
但是screen命令在默認的terminal里面布局是亂的, 換成putty后就好了(如果同時開著screen和putty, 也是亂的), 但是putty無法粘貼復制. 最后換成了GtkTerm
進入UBOOT
R3300L的uboot是通過空格鍵<space>進入, 別的鍵不起作用, Ctrl+C也不起作用
如果以上鍵都不起作用, fw_printenv檢查 bootdelay 的值, 如果為0, 需要改成大于0的值, 例如3
fw_setenv bootdelay 3
Win7連接TTL
Win7下PL2302會自動安裝驅動, 連接軟件用putty, securecrt, xshell都可以, 如果用putty出現藍屏的話, 可以換成其他的軟件.
基礎信息
啟動日志輸出
GXBB:BL1:08dafd:0a8993;FEAT:EDFC318C;POC:3;RCY:0;EMMC:0;READ:0;CHK:0;
TE: 270602
no sdio debug board detected
BL2 Built : 13:55:05, Jan 28 2016.
gxb g3625dd5 - xiaobo.gu@droid05
Board ID = 1
set vcck to 1100 mv
set vddee to 1000 mv
CPU clk: 1536MHz
DDR channel setting: DDR0 Rank0+1 diff
DDR0: 1024MB(auto) @ 912MHz(2T)-13
DDR1: 1024MB(auto) @ 912MHz(2T)-13
DataBus test pass!
AddrBus test pass!
Load fip header from eMMC, src: 0x0000c000, des: 0x01400000, size: 0x00004000
New fip structure!
Load bl30 from eMMC, src: 0x00010000, des: 0x01000000, size: 0x0000a9b0
Sending bl30...........................................OK.
Run bl30...
Load bl301 from eMMC, src: 0x0001c000, des: 0x01000000, size: 0x00001c20
Wait bl30...Done
Sending bl301........OK.
Run bl301...
Load bl31 from eMMC, src: 0x00020000, des: 0x10100000, size: 0x00012130
--- UART initialized after reboot ---
[Reset cause: unknown]
[Image: unknown, amlogic_v1.1.3054-53e549c 2016-03-31 20:40:25 xing.xu@droid05]
bl30: check_permit, count is 1
bl30: check_permit: ok!
chipid: ef be ad de d f0 aLoad bl33 from eMMC, src: 0x00034000, des: 0x01000000, size: 0x0009fd60
d ba ef be ad de not ES chip
efuse init ops = 13
efuse init hdcp = c, cf9=7
[0.401121 Inits done]
secure task start!
high task start!
low task start!
NOTICE: BL3-1: v1.0(debug):4c66217
NOTICE: BL3-1: Built : 17:13:36, Jan 28 2016
INFO: BL3-1: Initializing runtime services
WARNING: No OPTEE provided by BL2 boot loader
ERROR: Error initializing runtime service opteed_fast
INFO: BL3-1: Preparing for EL3 exit to normal world
INFO: BL3-1: Next image address = 0x1000000
INFO: BL3-1: Next image spsr = 0x3c9
U-Boot 2015.01-ga9e9562-dirty (May 26 2016 - 20:33:11)
DRAM: 2 GiB
Relocation Offset is: 76ed3000
register usb cfg[0][1] = 0000000077f62120
register usb cfg[0][2] = 0000000077f62140
register usb cfg[2][0] = 0000000077f62160
vpu detect type: 5
vpu clk_level = 7
set vpu clk: 666667000Hz, readback: 666660000Hz(0x300)
boot_device_flag : 1
Nand PHY Ver:1.01.001.0006 (c) 2013 Amlogic Inc.
init bus_cycle=6, bus_timing=8, system=5.0ns
reset failed
get_chip_type and ret:fffffffe
get_chip_type and ret:fffffffe
chip detect failed and ret:fffffffe
nandphy_init failed and ret=0xfffffff1
MMC: aml_priv->desc_buf = 0x0000000073ec3770
aml_priv->desc_buf = 0x0000000073ec5900
SDIO Port B: 0, SDIO Port C: 1
emmc/sd response timeout, cmd8, status=0x3ff2800
emmc/sd response timeout, cmd55, status=0x3ff2800
[mmc_init] mmc init success
mmc read lba=0x14000, blocks=0x400
Amlogic multi-dtb tool
Single dtb detected
start dts,buffer=0000000073ec7ff0,dt_addr=0000000073ec7ff0
parts: 11
00: logo 0000000002000000 1
01: recovery 0000000002000000 1
02: rsv 0000000000800000 1
03: tee 0000000000800000 1
04: crypt 0000000002000000 1
05: misc 0000000002000000 1
06: instaboot 0000000020000000 1
07: boot 0000000002000000 1
08: system 0000000040000000 1
09: cache 0000000020000000 2
10: data ffffffffffffffff 4
get_dtb_struct: Get emmc dtb OK!
overide_emmc_partition_table: overide cache
[mmc_get_partition_table] skip partition cache.
Partition table get from SPL is :
name offset size flag
===================================================================================
0: bootloader 0 400000 0
1: reserved 2400000 4000000 0
2: cache 6c00000 20000000 2
3: env 27400000 800000 0
4: logo 28400000 2000000 1
5: recovery 2ac00000 2000000 1
6: rsv 2d400000 800000 1
7: tee 2e400000 800000 1
8: crypt 2f400000 2000000 1
9: misc 31c00000 2000000 1
10: instaboot 34400000 20000000 1
11: boot 54c00000 2000000 1
12: system 57400000 40000000 1
13: data 97c00000 136500000 4
mmc read lba=0x12000, blocks=0x2
mmc read lba=0x12002, blocks=0x2
mmc_read_partition_tbl: mmc read partition OK!
eMMC/TSD partition table have been checked OK!
mmc env offset: 0x27400000
In: serial
Out: serial
Err: serial
[store]To run cmd[emmc dtb_read 0x1000000 0x40000]
read emmc dtb
Amlogic multi-dtb tool
Single dtb detected
Net: Meson_Ethernet
wipe_data=successful
wipe_cache=successful
upgrade_step=2
reboot_mode=cold_boot
hpd_state=0
[CANVAS]addr=0x3f800000 width=3840, height=2160
Not find '576cvbs' mapped VIC
amlkey_init() enter!
[EFUSE_MSG]keynum is 4
[KM]Error:f[key_manage_query_size]L504:key[usid] not programed yet
[KM]Error:f[key_manage_query_size]L504:key[deviceid] not programed yet
gpio: pin GPIOAO_3 (gpio 122) value is 1
saradc - saradc sub-system
Usage:
saradc saradc open <channel> - open a SARADC channel
saradc close - close the SARADC
saradc getval - get the value in current channel
saradc get_in_range <min> <max> - return 0 if current value in the range of current channel
Enter USB burn
Try connect time out 701, 700, 640
Hit any key to stop autoboot: 1 0
Booting...
Unknown command 'unifykey' - try 'help'
Unknown command 'unifykey' - try 'help'
[store]To run cmd[emmc dtb_read 0x1000000 0x40000]
read emmc dtb
Amlogic multi-dtb tool
Single dtb detected
ee_gate_off ...
## Booting Android Image at 0x01080000 ...
reloc_addr =73f481c0
copy done
Amlogic multi-dtb tool
Single dtb detected
load dtb from 0x1000000 ......
Uncompressing Kernel Image ... OK
kernel loaded at 0x01080000, end = 0x01f00fb8
Loading Ramdisk to 73c2c000, end 73ec1388 ... OK
Loading Device Tree to 000000001fff4000, end 000000001ffff0ab ... OK
signature:
fdt_instaboot: get header err
Starting kernel ...
uboot time: 2541079 us
從上面的輸出中可以得到uboot env的起始位置, 對于后面配置fw_env.config有重要的意義
Partition table get from SPL is :
name offset size flag
===================================================================================
0: bootloader 0 400000 0
1: reserved 2400000 4000000 0
2: cache 6c00000 20000000 2
3: env 27400000 800000 0
4: logo 28400000 2000000 1
5: recovery 2ac00000 2000000 1
6: rsv 2d400000 800000 1
7: tee 2e400000 800000 1
8: crypt 2f400000 2000000 1
9: misc 31c00000 2000000 1
10: instaboot 34400000 20000000 1
11: boot 54c00000 2000000 1
12: system 57400000 40000000 1
13: data 97c00000 136500000 4
uboot配置信息
baudrate=115200
bootargs=rootfstype=ramfs init=/init console=ttyS0,115200 no_console_suspend earlyprintk=aml-uart,0xc81004c0 ramoops.mem_address=0x20000000 ramoops.mem_size=0x
100000 ramoops.record_size=0x8000 ramoops.console_size=0x4000 androidboot.selinux=permissive logo=osd1,loaded,0x3f800000,576cvbs hdmimode=1080p60hz cvbsmode=57
6cvbs hdmitx= androidboot.firstboot=0 mac=c4:2f:ad:XX:XX:XX
androidboot.mac=c4:2f:ad:XX:XX:XX
bootcmd=run storeboot
bootdelay=1
bootmode_check=get_rebootmode; echo reboot_mode=${reboot_mode};if test ${reboot_mode} = factory_reset; then defenv_reserv aml_dt;setenv upgrade_step 2; save;fi;
bootup_offset=0x1080240
bootup_size=0x3f4c8
cmdline_keys=if keyman init 0x1234; then if keyman read usid ${loadaddr} str; then setenv bootargs ${bootargs} androidboot.serialno=${usid};fi;if keyman read mac ${loadaddr} str; then setenv bootargs ${bootargs} mac=${mac} androidboot.mac=${mac};fi;if keyman read deviceid ${loadaddr} str; then setenv bootargs ${bootargs} androidboot.deviceid=${deviceid};fi;fi;
cvbsmode=576cvbs
display_bpp=16
display_color_bg=0
display_color_fg=0xffff
display_color_index=16
display_height=576
display_layer=osd1
display_width=720
dtb_mem_addr=0x1000000
edid.crcvalue=0xe2070000
ethact=Meson_Ethernet
ethaddr=00:15:18:01:81:31
factory_reset_poweroff_protect=echo wipe_data=${wipe_data}; echo wipe_cache=${wipe_cache};if test ${wipe_data} = failed; then run init_display; run storeargs;if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;fi; if test ${wipe_cache} = failed; then run init_display; run storeargs;if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;fi;
fb_addr=0x3f800000
fb_height=1080
fb_width=1920
fdt_high=0x20000000
firstboot=0
gatewayip=10.18.9.1
hdmimode=1080p60hz
hostname=arm_gxbb
identifyWaitTime=750
init_display=hdmitx hpd;osd open;osd clear;vout output ${outputmode};imgread pic logo bootup $loadaddr;bmp display $bootup_offset;bmp scale
initargs=rootfstype=ramfs init=/init console=ttyS0,115200 no_console_suspend earlyprintk=aml-uart,0xc81004c0 ramoops.mem_address=0x20000000 ramoops.mem_size=0x100000 ramoops.record_size=0x8000 ramoops.console_size=0x4000 androidboot.selinux=permissive
ipaddr=10.18.9.97
irremote_update=if irkey 0xe31cfb04 0xb748fb04 2500000; then echo read irkey ok!; if itest ${irkey_value} == 0xe31cfb04; then run update;else if itest ${irkey_value} == 0xb748fb04; then run update;fi;fi;fi;
loadaddr=1080000
mac=c4:2f:ad:xx:xx:xx
netmask=255.255.255.0
outputmode=576cvbs
preboot=run factory_reset_poweroff_protect;run upgrade_check;run bootmode_check;run init_display;run storeargs;run upgrade_key;run upgrade_sadckey;run switch_b
ootmode;
reboot_mode=cold_boot
recovery_from_flash=if imgread kernel recovery ${loadaddr}; then wipeisb; bootm ${loadaddr}; fi recovery_from_sdcard=if fatload mmc 0 ${loadaddr} aml_autoscript; then autoscr ${loadaddr}; fi;if fatload mmc 0 ${loadaddr} recovery.img; then if fatload mmc 0
${dtb_mem_addr} dtb.img; then echo sd dtb.img loaded; fi;wipeisb; bootm ${loadaddr};fi;
recovery_from_udisk=if fatload usb 0 ${loadaddr} aml_autoscript; then autoscr ${loadaddr}; fi;if fatload usb 0 ${loadaddr} recovery.img; then if fatload usb 0
${dtb_mem_addr} dtb.img; then echo udisk dtb.img loaded; fi;wipeisb; bootm ${loadaddr};fi;
sdc_burning=sdc_burn ${sdcburncfg}
sdcburncfg=aml_sdc_burn.ini
serverip=10.18.9.113
set=environment variables
stderr=serial
stdin=serial
stdout=serial
storeargs=setenv bootargs ${initargs} logo=${display_layer},loaded,${fb_addr},${outputmode} hdmimode=${hdmimode} cvbsmode=${cvbsmode} hdmitx=${cecconfig} andro
idboot.firstboot=${firstboot}; run cmdline_keys;
storeboot=echo Booting...; if unifykey get usid; then setenv bootargs ${bootargs} androidboot.serialno=${usid};fi;if unifykey get mac; then setenv bootargs ${
bootargs} mac=${ethaddr};fi;if imgread kernel boot ${loadaddr}; then store dtb read $dtb_mem_addr; bootm ${loadaddr}; fi;run update;
switch_bootmode=get_rebootmode;if test ${reboot_mode} = factory_reset; then run recovery_from_flash;else if test ${reboot_mode} = update; then run update;else
if test ${reboot_mode} = cold_boot; then run try_auto_burn; fi;fi;fi;
try_auto_burn=update 700 750;
update=run usb_burning; run sdc_burning; if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;
upgrade_check=echo upgrade_step=${upgrade_step}; if itest ${upgrade_step} == 3; then run init_display; run storeargs; run update;else if itest ${upgrade_step}
== 1; then defenv_reserv; setenv upgrade_step 2; saveenv;fi;fi;
upgrade_key=if gpio input GPIOAO_3; then echo detect upgrade key; run update;fi;
upgrade_sadckey=saradc open 0; if saradc get_in_range 0 0x50; then sleep 1; if saradc get_in_range 0 0x50; then echo update by key...; run update; fi;fi;
upgrade_step=2
usb_burning=update 1000
wipe_cache=successful
wipe_data=successful
不同系統啟動后的uboot配置
以下信息均采集于在同一個Q7 (S905L, 8G eMMC) 上運行的系統
EmuELEC 3.1 - Kernel 3.14.29
fw_env.config
EmuELEC:~ # more /etc/fw_env.config # Configuration file for fw_(printenv/setenv) utility. # Up to two entries are valid, in this case the redundant # environment sector is assumed present. # Notice, that the "Number of sectors" is not required on NOR and SPI-dataflash. # Futhermore, if the Flash sector size is ommitted, this value is assumed to # be the same as the Environment size, which is valid for NOR and SPI-dataflash # Amlogic NAND /dev/nand_env 0x000000 0x10000 0x10000 # Amlogic eMMC /dev/env 0x000000 0x10000 0x10000
fw_printenv
EmuELEC:~ # fw_printenv
1080i_h=1037
1080i_w=1843
1080i_x=38
1080i_y=21
1080p_h=1037
1080p_w=1843
1080p_x=38
1080p_y=21
576i_h=576
576i_w=720
576i_x=0
576i_y=0
720p_h=691
720p_w=1229
720p_x=25
720p_y=14
baudrate=115200
boot_count=0
bootcmd=if test ${bootfromnand} = 1; then setenv bootfromnand 0; saveenv; else run bootfromsd; run bootfromusb; fi; run storeboot
bootcount_check=echo bootcounts=${boot_count}; if itest ${boot_count} == 0; then setenv boot_count 1;saveenv;else if itest ${boot_count} == 1; then setenv boot_count 2;saveenv;else if itest ${boot_count} == 2; then setenv boot_count 3;saveenv;else if itest ${boot_count} == 3; then setenv boot_count 4;saveenv;else if itest ${boot_count} == 4; then run recovery_from_flash;fi;fi;fi;fi;fi
bootdelay=0
bootfromnand=0
bootfromsd=mmcinfo; if fatload mmc 0 ${loadaddr} kernel.img; then run sddtb; setenv bootargs ${bootargs} bootfromsd; bootm; fi
bootfromusb=usb start 0; if fatload usb 0 ${loadaddr} kernel.img; then run usbdtb; setenv bootargs ${bootargs} bootfromusb; bootm; fi
bootmode_check=get_rebootmode; echo reboot_mode=${reboot_mode};if test ${reboot_mode} = factory_reset; then defenv_reserv;setenv upgrade_step 2; save;fi;
cmdline_keys=if keyman init 0x1234; then if sec_keyunify read mac ${loadaddr} str; then setenv bootargs ${bootargs} mac=${mac} androidboot.mac=${mac};fi;fi;
cvbs_drv=0
cvbsmode=576cvbs
digitaudiooutput=HDMI&SPDIF PCM
display_bpp=24
display_color_bg=0
display_color_fg=0xffff
display_color_index=24
display_height=1080
display_layer=osd1
display_width=1920
dtb_mem_addr=0x1000000
factory_reset_poweroff_protect=echo wipe_data=${wipe_data}; echo wipe_cache=${wipe_cache};if test ${wipe_data} = failed; then run init_display; run storeargs;if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;fi; if test ${wipe_cache} = failed; then run init_display; run storeargs;if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;fi;
fb_addr=0x3d800000
fb_height=1080
fb_width=1920
fdt_high=0x20000000
firstboot=1
gatewayip=10.18.9.1
hdmimode=720p50hz
hostname=arm_gxbb
init_display=osd open;osd clear;imgread pic logo bootup $loadaddr;bmp display $bootup_offset;bmp scale
initargs=rootfstype=ramfs init=/init console=ttyS0,115200 no_console_suspend earlyprintk=aml-uart,0xc81004c0 ramoops.pstore_en=1 ramoops.record_size=0x8000 ramoops.console_size=0x4000 androidboot.selinux=permissive
ipaddr=10.18.9.97
irremote_update=if irkey 0xf8077748 0x7d824cb3 0x728ddd22 100000; then echo read irkey ok!; if itest ${irkey_value} == 0xf8077748; then run update;else if itest ${irkey_value} == 0x7d824cb3; then run update;else if itest ${irkey_value} == 0x728ddd22; then run update;
fi;fi;fi;fi;
jtag=apee
loadaddr=1080000
netmask=255.255.255.0
outputdefault=setenv outputmode 720p50hz;setenv 720p_w 1229;setenv 720p_h 691;setenv 720p_x 25;setenv 720p_y 14;setenv 1080i_w 1843;setenv 1080i_h 1037;setenv 1080i_x 38;setenv 1080i_y 21;setenv 1080p_w 1843;setenv 1080p_h 1037;setenv 1080p_x 38;setenv 1080p_y 21;setenv 576i_w 684;setenv 576i_h 547;setenv 576i_x 18;setenv 576i_y 14;
outputmode=720p50hz
preboot=run factory_reset_poweroff_protect;run upgrade_check;run bootmode_check;run init_display;run storeargs;run update_ir;run upgrade_key;run switch_bootmode;
recovery_from_flash=setenv bootargs ${bootargs} aml_dt=${aml_dt} recovery_part={recovery_part} recovery_offset={recovery_offset};if imgread kernel ${recovery_part} ${loadaddr} ${recovery_offset}; then wipeisb; bootm ${loadaddr}; fi
recovery_from_sdcard=if fatload mmc 0 ${loadaddr} aml_autoscript; then autoscr ${loadaddr}; fi;if fatload mmc 0 ${loadaddr} recovery.img; then if fatload mmc 0 ${dtb_mem_addr} dtb.img; then echo sd dtb.img loaded; fi;wipeisb; bootm ${loadaddr};fi;
recovery_from_udisk=if fatload usb 0 ${loadaddr} aml_autoscript; then autoscr ${loadaddr}; fi;if fatload usb 0 ${loadaddr} recovery.img; then if fatload usb 0 ${dtb_mem_addr} dtb.img; then echo udisk dtb.img loaded; fi;wipeisb; bootm ${loadaddr};fi;
recovery_offset=0
recovery_part=recovery
screenmode=full
sdc_burning=sdc_burn ${sdcburncfg}
sdcburncfg=aml_sdc_burn.ini
sddtb=if fatload mmc 0 ${dtb_mem_addr} dtb.img; then else store dtb read $dtb_mem_addr; fi
serverip=10.18.9.113
storeargs=setenv bootargs ${initargs} logo=${display_layer},loaded,${fb_addr},${outputmode} vout=${outputmode},enable hdmimode=${hdmimode} cvbsmode=${cvbsmode} hdmitx=${cecconfig} cvbsdrv=${cvbs_drv} androidboot.firstboot=${firstboot} quiet jtag=${jtag}; setenv bootargs ${bootargs} androidboot.hardware=amlogic androidboot.boardid=${boardid};run cmdline_keys;
storeboot=if imgread kernel boot ${loadaddr}; then bootm ${loadaddr}; fi;run update;
switch_bootmode=get_rebootmode;if test ${reboot_mode} = factory_reset; then run recovery_from_flash;else if test ${reboot_mode} = update; then run update;fi;fi;
try_auto_burn=update 700 750;
update=run usb_burning; run sdc_burning; if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;
update_ir=if irdetect; then run update; fi
update_sar=saradc open 0;if saradc get_in_range 0x0 0x100; then run update; fi
upgrade_check=echo upgrade_step=${upgrade_step}; if itest ${upgrade_step} == 3; then run init_display; run storeargs; run update;else if itest ${upgrade_step} == 1; then defenv_reserv; setenv upgrade_step 2; saveenv;else if itest ${upgrade_step} == 4; then defenv_reserv; run outputdefault; setenv upgrade_step 2; saveenv;fi;fi;fi;
upgrade_key=if gpio input GPIOH_6; then echo detect upgrade key; sleep 3; run update;fi;
upgrade_step=2
usb_burning=update 1000
usbdtb=if fatload usb 0 ${dtb_mem_addr} dtb.img; then else store dtb read $dtb_mem_addr; fi
wipe_cache=successful
wipe_data=successful
Armbian 19.11.3 - Kernel 5.3.0
fw_env.config 和3.14的kernel不一樣, mainline kernel 不再有/dev/nand這樣的設備了
root@aml:~# more /etc/fw_env.config # Configuration file for fw_(printenv/saveenv) utility. # Up to two entries are valid, in this case the redundant # environment sector is assumed present. # Notice, that the "Number of sectors" is ignored on NOR. /dev/mmcblk0 0x27400000 0x10000 0x10000
fw_printenv
root@aml:~# fw_printenv
1080i_h=1037
1080i_w=1843
1080i_x=38
1080i_y=21
1080p_h=1037
1080p_w=1843
1080p_x=38
1080p_y=21
576i_h=576
576i_w=720
576i_x=0
576i_y=0
720p_h=691
720p_w=1229
720p_x=25
720p_y=14
baudrate=115200
boot_count=0
bootcmd=run start_autoscript; run storeboot
bootcount_check=echo bootcounts=${boot_count}; if itest ${boot_count} == 0; then setenv boot_count 1;saveenv;else if itest ${boot_count} == 1; then setenv boot_count 2;saveenv;else if itest ${boot_count} == 2; then setenv boot_count 3;saveenv;else if itest ${boot_count} == 3; then setenv boot_count 4;saveenv;else if itest ${boot_count} == 4; then run recovery_from_flash;fi;fi;fi;fi;fi
bootdelay=0
bootmode_check=get_rebootmode; echo reboot_mode=${reboot_mode};if test ${reboot_mode} = factory_reset; then defenv_reserv;setenv upgrade_step 2; save;fi;
cmdline_keys=if keyman init 0x1234; then if sec_keyunify read mac ${loadaddr} str; then setenv bootargs ${bootargs} mac=${mac} androidboot.mac=${mac};fi;fi;
cvbs_drv=0
cvbsmode=576cvbs
digitaudiooutput=HDMI&SPDIF PCM
display_bpp=24
display_color_bg=0
display_color_fg=0xffff
display_color_index=24
display_height=1080
display_layer=osd1
display_width=1920
dtb_mem_addr=0x1000000
factory_reset_poweroff_protect=echo wipe_data=${wipe_data}; echo wipe_cache=${wipe_cache};if test ${wipe_data} = failed; then run init_display; run storeargs;if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;fi; if test ${wipe_cache} = failed; then run init_display; run storeargs;if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;fi;
fb_addr=0x3d800000
fb_height=1080
fb_width=1920
fdt_high=0x20000000
firstboot=1
gatewayip=10.18.9.1
hdmimode=720p50hz
hostname=arm_gxbb
init_display=osd open;osd clear;imgread pic logo bootup $loadaddr;bmp display $bootup_offset;bmp scale
initargs=rootfstype=ramfs init=/init console=ttyS0,115200 no_console_suspend earlyprintk=aml-uart,0xc81004c0 ramoops.pstore_en=1 ramoops.record_size=0x8000 ramoops.console_size=0x4000 androidboot.selinux=permissive
ipaddr=10.18.9.97
irremote_update=if irkey 0xf8077748 0x7d824cb3 0x728ddd22 100000; then echo read irkey ok!; if itest ${irkey_value} == 0xf8077748; then run update;else if itest ${irkey_value} == 0x7d824cb3; then run update;else if itest ${irkey_value} == 0x728ddd22; then run update;
fi;fi;fi;fi;
jtag=apee
loadaddr=1080000
netmask=255.255.255.0
outputdefault=setenv outputmode 720p50hz;setenv 720p_w 1229;setenv 720p_h 691;setenv 720p_x 25;setenv 720p_y 14;setenv 1080i_w 1843;setenv 1080i_h 1037;setenv 1080i_x 38;setenv 1080i_y 21;setenv 1080p_w 1843;setenv 1080p_h 1037;setenv 1080p_x 38;setenv 1080p_y 21;setenv 576i_w 684;setenv 576i_h 547;setenv 576i_x 18;setenv 576i_y 14;
outputmode=720p50hz
preboot=run factory_reset_poweroff_protect;run upgrade_check;run bootmode_check;run init_display;run storeargs;run update_ir;run upgrade_key;run switch_bootmode;
recovery_from_flash=setenv bootargs ${bootargs} aml_dt=${aml_dt} recovery_part={recovery_part} recovery_offset={recovery_offset};if imgread kernel ${recovery_part} ${loadaddr} ${recovery_offset}; then wipeisb; bootm ${loadaddr}; fi
recovery_from_sdcard=if fatload mmc 0 ${loadaddr} aml_autoscript; then autoscr ${loadaddr}; fi;if fatload mmc 0 ${loadaddr} recovery.img; then if fatload mmc 0 ${dtb_mem_addr} dtb.img; then echo sd dtb.img loaded; fi;wipeisb; bootm ${loadaddr};fi;
recovery_from_udisk=if fatload usb 0 ${loadaddr} aml_autoscript; then autoscr ${loadaddr}; fi;if fatload usb 0 ${loadaddr} recovery.img; then if fatload usb 0 ${dtb_mem_addr} dtb.img; then echo udisk dtb.img loaded; fi;wipeisb; bootm ${loadaddr};fi;
recovery_offset=0
recovery_part=recovery
screenmode=full
sdc_burning=sdc_burn ${sdcburncfg}
sdcburncfg=aml_sdc_burn.ini
serverip=10.18.9.113
start_autoscript=if mmcinfo; then run start_mmc_autoscript; fi; if usb start; then run start_usb_autoscript; fi; run start_emmc_autoscript
start_emmc_autoscript=if fatload mmc 1 1020000 emmc_autoscript; then autoscr 1020000; fi;
start_mmc_autoscript=if fatload mmc 0 1020000 s905_autoscript; then autoscr 1020000; fi;
start_usb_autoscript=for usbdev in 0 1 2 3; do if fatload usb ${usbdev} 1020000 s905_autoscript; then autoscr 1020000; fi; done
storeargs=setenv bootargs ${initargs} logo=${display_layer},loaded,${fb_addr},${outputmode} vout=${outputmode},enable hdmimode=${hdmimode} cvbsmode=${cvbsmode} hdmitx=${cecconfig} cvbsdrv=${cvbs_drv} androidboot.firstboot=${firstboot} quiet jtag=${jtag}; setenv bootargs ${bootargs} androidboot.hardware=amlogic androidboot.boardid=${boardid};run cmdline_keys;
storeboot=if imgread kernel boot ${loadaddr}; then bootm ${loadaddr}; fi;run update;
switch_bootmode=get_rebootmode;if test ${reboot_mode} = factory_reset; then run recovery_from_flash;else if test ${reboot_mode} = update; then run update;fi;fi;
try_auto_burn=update 700 750;
update=run usb_burning; run sdc_burning; if mmcinfo; then run recovery_from_sdcard;fi;if usb start 0; then run recovery_from_udisk;fi;run recovery_from_flash;
update_ir=if irdetect; then run update; fi
update_sar=saradc open 0;if saradc get_in_range 0x0 0x100; then run update; fi
upgrade_check=echo upgrade_step=${upgrade_step}; if itest ${upgrade_step} == 3; then run init_display; run storeargs; run update;else if itest ${upgrade_step} == 1; then defenv_reserv; setenv upgrade_step 2; saveenv;else if itest ${upgrade_step} == 4; then defenv_reserv; run outputdefault; setenv upgrade_step 2; saveenv;fi;fi;fi;
upgrade_key=if gpio input GPIOH_6; then echo detect upgrade key; sleep 3; run update;fi;
upgrade_step=2
usb_burning=update 1000
wipe_cache=successful
wipe_data=successful
從上面輸出的對比可以看出, EmuELEC所在的系統會對uboot增加如下配置
bootcmd=if test ${bootfromnand} = 1; then setenv bootfromnand 0; saveenv; else run bootfromsd; run bootfromusb; fi; run storeboot
bootfromnand=0
bootfromsd=mmcinfo; if fatload mmc 0 ${loadaddr} kernel.img; then run sddtb; setenv bootargs ${bootargs} bootfromsd; bootm; fi
bootfromusb=usb start 0; if fatload usb 0 ${loadaddr} kernel.img; then run usbdtb; setenv bootargs ${bootargs} bootfromusb; bootm; fi
sddtb=if fatload mmc 0 ${dtb_mem_addr} dtb.img; then else store dtb read $dtb_mem_addr; fi
usbdtb=if fatload usb 0 ${dtb_mem_addr} dtb.img; then else store dtb read $dtb_mem_addr; fi
Armbian會對uboot增加如下配置
bootcmd=run start_autoscript; run storeboot
start_autoscript=if mmcinfo; then run start_mmc_autoscript; fi; if usb start; then run start_usb_autoscript; fi; run start_emmc_autoscript
start_emmc_autoscript=if fatload mmc 1 1020000 emmc_autoscript; then autoscr 1020000; fi;
start_mmc_autoscript=if fatload mmc 0 1020000 s905_autoscript; then autoscr 1020000; fi;
start_usb_autoscript=for usbdev in 0 1 2 3; do if fatload usb ${usbdev} 1020000 s905_autoscript; then autoscr 1020000; fi; done
Armbian從TF卡啟動的機制
初次啟動時, 是通過安卓命令行下的reboot update開始的, 這時候uboot以update模式啟動, 依次嘗試以下步驟, 進入burning模式或啟動recovery系統:
run usb_burning 線刷,
run sdc_burning 卡刷,
recovery_from_sdcard SD/TF卡載recovery,
recovery_from_udisk U盤卡載recovery,
recovery_from flash 本機的recovery
在卡槽中存在Armbian系統TF時, 會進入第二步, 因為TF卡上有aml_autoscript這個文件, 其源文件如下
root@aml:/# more /boot/aml_autoscript.cmd
defenv
setenv bootcmd 'run start_autoscript; run storeboot'
setenv start_autoscript 'if mmcinfo; then run start_mmc_autoscript; fi; if usb start; then run start_usb_autoscript; fi; run start_emmc_autoscript'
setenv start_emmc_autoscript 'if fatload mmc 1 1020000 emmc_autoscript; then autoscr 1020000; fi;'
setenv start_mmc_autoscript 'if fatload mmc 0 1020000 s905_autoscript; then autoscr 1020000; fi;'
setenv start_usb_autoscript 'for usbdev in 0 1 2 3; do if fatload usb ${usbdev} 1020000 s905_autoscript; then autoscr 1020000; fi; done'
setenv upgrade_step 2
saveenv
sleep 1
reboot
.執行此腳本會更新uboot env中的bootcmd, 然后重啟. uboot以normal啟動后, 會首先執行strart_autoscript, 會依次嘗試start_mmc_autoscript,start_usb_autoscript,start_emmc_autoscript, 在卡槽中存在Armbian系統TF時, 會進入第一步, 去執行卡上的s905_autoscript這個腳本, 其源文件內容如下
if fatload mmc 0 0x11000000 boot_android; then if test ${ab} = 0; then setenv ab 1; saveenv; exit; else setenv ab 0; saveenv; fi; fi;
if fatload usb 0 0x11000000 boot_android; then if test ${ab} = 0; then setenv ab 1; saveenv; exit; else setenv ab 0; saveenv; fi; fi;
setenv env_addr 0x10400000
setenv kernel_addr 0x11000000
setenv initrd_addr 0x13000000
setenv boot_start booti ${kernel_addr} ${initrd_addr} ${dtb_mem_addr}
setenv addmac 'if printenv mac; then setenv bootargs ${bootargs} mac=${mac}; elif printenv eth_mac; then setenv bootargs ${bootargs} mac=${eth_mac}; fi'
setenv try_boot_start 'if fatload ${devtype} ${devnum} ${kernel_addr} zImage; then if fatload ${devtype} ${devnum} ${initrd_addr} uInitrd; then fatload ${devtype} ${devnum} ${env_addr} uEnv.ini && env import -t ${env_addr} ${filesize} && run addmac; fatload ${devtype} ${devnum} ${dtb_mem_addr} ${dtb_name} && run boot_start; fi; fi;'
setenv devtype mmc
setenv devnum 0
run try_boot_start
setenv devtype usb
for devnum in 0 1 2 3 ; do run try_boot_start ; done
其產生的uboot log如下
...
Hit any key to stop autoboot: 0
card in
[mmc_init] mmc init success
Device: SDIO Port B
Manufacturer ID: 3
OEM: 5344
Name: SU16G
Tran Speed: 50000000
Rd Block Len: 512
SD version 3.0
High Capacity: Yes
Capacity: 14.8 GiB
Bus Width: 4-bit
reading s905_autoscript
1112 bytes read in 9 ms (120.1 KiB/s)
## Executing script at 01020000
reading boot_android
** Unable to read file boot_android **
** Bad device usb 0 **
reading zImage
27871744 bytes read in 1264 ms (21 MiB/s)
reading uInitrd
9994338 bytes read in 452 ms (21.1 MiB/s)
reading uEnv.ini
224 bytes read in 3 ms (72.3 KiB/s)
## Error: "mac" not defined
## Error: "eth_mac" not defined
reading /dtb/amlogic/meson-gxl-s905x-nexbox-a95x.dtb
25654 bytes read in 13 ms (1.9 MiB/s)
## Loading init Ramdisk from Legacy Image at 13000000 ...
Image Name: uInitrd
Image Type: AArch64 Linux RAMDisk Image (gzip compressed)
Data Size: 9994274 Bytes = 9.5 MiB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Single dtb detected
load dtb from 0x1000000 ......
## Flattened Device Tree blob at 01000000
Booting using the fdt blob at 0x1000000
Loading Ramdisk to 33534000, end 33ebc022 ... OK
Loading Device Tree to 000000001fff6000, end 000000001ffff435 ... OK
Starting kernel ...
uboot time: 4023961 us
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[ 0.000000] Linux version 5.3.0-aml-g12 (root@os3-362-14133) (gcc version 7.4.1 20181213 [linaro-7.4-2019.02 revision 56ec6f6b99cc167ff0c2f8e1a2eed33b1edc85d4] (Linaro GCC 7.4-2019.02)) #5.99 SMP PREEMPT Wed Dec 4 21:34:52 JST 2019
...
參考
https://blog.lvu.kr/page/12/?page=15 很詳細的輸出記錄
總結
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