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products:sbc:vim4:development:boot-sequence

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products:sbc:vim4:development:boot-sequence [2022/08/21 23:51]
ruby [U-boot shell usage] 		products:sbc:vim4:development:boot-sequence [2022/08/22 03:33] (current)
hyphop old revision restored (2022/08/22 14:54)
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 ====== VIM4 OS Boot Priority ====== ====== VIM4 OS Boot Priority ======
  
-VIM4 is capable of boot-up from: ''eMMC'', ''TF Card'', ''SPI-Flash''+VIM4 have possibility boot-up from : ''eMMC'', ''TF Card'', ''SPI-Flash''
  
 <WRAP info > <WRAP info >
-We talking there only about 1st stage SOC boot, +We talking there only about 1st stage SoC boot, 
 next second stage OS loading possible for any other devices like USB storage's, next second stage OS loading possible for any other devices like USB storage's,
 NVMe etc ... and depends from ''u-boot'' configurations NVMe etc ... and depends from ''u-boot'' configurations
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 ===== Default boot priority ===== ===== Default boot priority =====
  
-  - TF-Card <wrap important> always have highest priority</wrap>+  - TF-Card <wrap important>always highest priority</wrap>
   - eMMC   - eMMC
   - SPI-Flash   - SPI-Flash
  
-===== U-boot shell usage ===== +===== U-Boot shell usage ===== 
-We can swap the boot priority of the ''eMMC'' and ''SPI-Flash'' via the [[products:sbc:vim4:development:kbi|KBI(Khadas Boot Instructions)]] from u-boot shell+You can change the boot priority of the ''eMMC'' and ''SPI-Flash'' via the [[products:sbc:vim4:development:kbi|KBI(Khadas Boot Instructions)]] from u-boot shell
  
-Change boot priority to: ''TF-Card => eMMC => SPI-Flash''+Change boot priority to: ''TF-Card'' => ''eMMC'' => ''SPI-Flash''
  
 ```shell ```shell
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 ``` ```
  
-Change boot priority to: ''TF-Card => SPI-Flash => eMMC''+Change boot priority to: ''TF-Card'' => ''SPI-Flash'' => ''eMMC''
  
 ```shell ```shell
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 <WRAP important > <WRAP important >
-To make the booting priority swap take effect, you can reset via MCU, or you can reboot the hardware by clicking the Reset button, or plugging the power supply or cable. +for apply setting for next boot, need reboot device by ''RESET'' button or re-plug power cable or power-off device or [[#hot-apply-setting-changes-via-mcu-reboot|reboot via mcu]]
- need reboot device by ''RESET'' button or re-plug power cable or power-off device or [[#hot-apply-setting-changes-via-mcu-reboot|reboot via mcu]]+
 </WRAP> </WRAP>
  
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 Hold ''FUNCTION'' and short press ''RESET'' to force boot [[:OOWOW]] service from SPI-flash, and skip other boot sources Hold ''FUNCTION'' and short press ''RESET'' to force boot [[:OOWOW]] service from SPI-flash, and skip other boot sources
  
-<WRAP important>TF-card slot must be empty</WRAP>+<WRAP important>TF-card slot must be empty.</WRAP>
  
  
Last modified: 2022/08/21 23:51 by ruby

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