69 lines
1.9 KiB
Markdown
69 lines
1.9 KiB
Markdown
OTP Pattern Generator for OEM
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2022 Amlogic, Inc. All rights reserved.
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## Command line
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```
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$ ./gen-oem-otp.sh -i <csv_file_input> -o <output_filename>
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```
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## CSV format in Depth
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* First line of CSV file must be `Feature,Size,Value`
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* Name the required feature, a size (in bits) and a value in the following lines
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* The value must be in hexadecimal.
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* Execute the command line to generate the OTP efuse pattern.
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* What features to be included with what values must be discussed with Synamedia.
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Examples
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```
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Feature,Size,Value
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FEAT_ENABLE_DEVICE_SCS_SIG_0,1,1
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FEAT_ENABLE_DEVICE_SCS_SIG_1,1,1
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FEAT_ENABLE_DEVICE_VENDOR_SIG_0,1,1
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FEAT_ENABLE_DEVICE_VENDOR_SIG_1,1,1
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FEAT_ENABLE_DEVICE_PROT_0,1,1
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FEAT_ENABLE_DEVICE_PROT_1,1,1
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FEAT_DISABLE_BOOT_NORMAL_SPI_NOR,1,1
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FEAT_DISABLE_BOOT_NORMAL_NAND,1,1
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FEAT_DISABLE_BOOT_NORMAL_EMMC,1,1
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FEAT_DISABLE_BOOT_NORMAL_SDCARD,1,1
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FEAT_DISABLE_BOOT_NORMAL_SPI_NAND,1,1
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FEAT_DISABLE_BOOT_DFU_USB,1,1
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FEAT_DISABLE_BOOT_ALTSRC,1,1
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FEAT_DISABLE_BOOT_NORMAL_FALLBACK2USB,1,1
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FEAT_DISABLE_SW_BOOT_OVERRIDE,1,1
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FEAT_DISABLE_EXT_BOOT_OVERRIDE,1,1
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FEAT_DISABLE_DDR_FIP_CONTAINER,1,1
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FEAT_ENABLE_USB_AUTH,1,1
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FEAT_ENABLE_DIF_MASTER_PROT,1,1
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FEAT_ENABLE_ACPU_JTAG_PROT,1,1
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FEAT_ENABLE_AOCPU_JTAG_PROT,1,1
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FEAT_ENABLE_DSP_JTAG_PROT,1,1
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FEAT_DISABLE_NSK_CONCURRENCY,1,1
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NSK_PUB_OTP_OID,16,1122
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NSK_PUB_OTP_VID,16,3344
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DEVICE_SCS_SEGID,32,55667788
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DEVICE_VENDOR_SEGID,32,aabbccdd
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DGPK1,128,00112233445566778899aabbccddEEFF
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LICENSE_LOCK_1_B228_LOCK,1,1
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NSK_OTP_WRITE_PASSWORD_PROTECT,1,1
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```
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## Fusing OTP
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1. Copy generated files to SD card or usb storage device
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2. Insert storage into the slot and boot.
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On u-boot prompt:
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```
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#sdcard
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sc2_ah219# fatload mmc 0 1080000 <generated.output.efuse>
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sc2_ah219# efuse amlogic_set 1080000
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#usb storage device
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sc2_ah219# usb start
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sc2_ah219# usb tree # to check if usb device has been recognized
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sc2_ah219# fatload usb 0 1080000 <generated.output.efuse>
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sc2_ah219# efuse amlogic_set 1080000
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``` |