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| | __FORCETOC__ |
| {{DISPLAYTITLE:RZ/G2 ARM Trusted Firmware}} | | {{DISPLAYTITLE:RZ/G2 ARM Trusted Firmware}} |
| ← [[RZ-G]] | | ← [[RZ-G]] |
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| = Locations for each code section = | | = Updating TF-A on Your Board = |
| | | * [[RZ-G/RZ-G2_Update_Trusted-firmware_and_U-boot_Under_Linux|Update Trusted Firmware under Linux]] |
| '''File containing #defines'''
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| If you look in file sa6.c, you will find the #defines for all the flash locations for both SPI boot and eMMC boot.
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| * arm-trusted-firmware/tools/dummy_create/sa6.c | |
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| '''eMMC partitions'''
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| All eMMC devices contain 3 separate Flash sections: 2 boot partitions and 1 main flash area.
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| The partitions are selected as part of the eMMC command protocols.
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| The boot partitions are usually about 4MB each.
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| By default, the RZ/G2 BSP places the IPL (arm-trusted-firmware) in eMMC boot partition 1 and u-boot in eMMC boot partition 2. However, you can place both the IPL and u-boot in the same partition if you really wanted to (boot partition 1) and leave boot partition 2 blank (or do something else with it).
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| However it should be noted that the u-boot for the HiHope board is set up to use boot partition 2 for its environment variable area.
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| = Hardware setup code =
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| Since arm-trusted-firmware is the first software to run after RESET, a minimal set of peripherals need to be configured and used.
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| Some required configurations are as follows:
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| * PFC: For pin control setting to change from default GPIO pins to peripheral pins
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| * DBSC4, AXI: For memory DDR setting, and QoS setting
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| * GPIO, I2C: For controlling PMIC
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| * SCIF: For output message to debug serial
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| * WDT: If timeout detection is being used
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| * CPG: For enabling above modules
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| * SPI: If the bootloader images are stored in SPI flash
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| * SDHI, MMC: If the bootloader images are stored in SD card or eMMC.
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