Altera MAX 10 FPGA Manuale Utente Scaricare il pdf (Pagina 45)

Once the .ekp is integrated into the .pof, you can to save the integrated .pof into a new .pof. This newly

saved file will have original .pof integrated with .ekp information.

7. Select the <yourpoffile.pof> in the Program/Configure column.

8. After all settings are set, click Start to start programming

Encryption in Internal Configuration

During internal configuration, the FPGA decrypts the .pof with the stored key and uses the decrypted data

to configure itself. The configuration image loaded during configuration is also affected by the encryption

settings and the Auto-reconfigure from secondary image when initial image fails setting.

Table 3-3: Configuration Image Outcome Based on Encryption Settings, Encryption Key and CONFIG_SEL

Pin Settings

Table shows the scenario when Auto-reconfigure from secondary image when initial image fails is enabled.

Configura‐

tion Image

Mode

CFM0 (image 0)

Encryption Key

CFM1 (image 1)

Encryption Key

Key Stored

in the Device

Allow

Encrypted

POF Only

CONFIG_SEL

Design Loaded

After Power-up

Single Not Encrypted Not Available No key Disabled 0 image 0

Single Not Encrypted Not Available No key Disabled 1 image 0

Single Not Encrypted Not Available Key X Disabled 0 image 0

Single Not Encrypted Not Available Key X Disabled 1 image 0

Single Not Encrypted Not Available Key X Enabled 0 Configuration Fail

Single Not Encrypted Not Available Key X Enabled 1 Configuration Fail

Single Key X Not Available No key Enabled 0 Configuration Fail

Single Key X Not Available No key Enabled 1 Configuration Fail

Single Key X Not Available Key X Enabled 0 image 0

Single Key X Not Available Key X Enabled 1 image 0

Single Key X Not Available Key Y Enabled 0 Configuration Fail

Single Key X Not Available Key Y Enabled 1 Configuration Fail

Dual Not Encrypted Not Encrypted No key Disabled 0 image 0

Dual Not Encrypted Not Encrypted No key Disabled 1 image 1

Dual Key X Not Encrypted No key Disabled 0 image 1

(8)

Dual Key X Not Encrypted No key Disabled 1 image 1

Dual Key X Not Encrypted Key X Disabled 0 image 0

Dual Key X Not Encrypted Key X Disabled 1 image 1

Dual Key X Not Encrypted Key X Enabled 0 image 0

Dual Key X Not Encrypted Key X Enabled 1 image 0

(8)

After image 0 configuration failed, device will automatically load image 1.

(9)

After image 1 configuration failed, device will automatically load image 0.

UG-M10CONFIG

2015.05.04

Encryption in Internal Configuration

3-15

MAX 10 FPGA Configuration Design Guidelines

Altera Corporation

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Altera MAX 10 FPGA Manuale Utente Pagina 45

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