- #Android u boot source serial#
- #Android u boot source download#
#Android u boot source download#
With option 1, you can download Flash Writer and program the bootloaders, Arm Trusted Firmware (ATF) and U-Boot, into QSPI / eMMC boot partition, then reset and run U-Boot. In any of the cases above the goal is to have U-Boot up and running, then there are plenty of options to program the rootfs: ethernet, SD card, USB as host, USB with Mass Storage gadget, fastboot or even boot Linux kernel + initramfs.
It is worth to mention that, in general, if a QSPI FLASH is present on the custom board, it can also be bought preprogrammed. RZ/G2L cannot boot from USB, so at the end-of-line there are a few real viable options: To transfer this amount of data a fast interface is indeed required. Usually firmware and bootloaders are relatively small (less than 1MB in total), kernel is instead in the tens of megabyte range and rootfs can go up to several hundreds of megabytes. We can also reasonably say that being the RZ/G2L a low-end device, there is the tendency to remove the QSPI to save money on the BOM.Īt the end of the production line of course non-volatile memories are virgin (with a notable exception explained later) and need to be programmed. There might be other special cases but we can confidently state that these cover the great majority. Very often there is only one ext partition in the user space and Linux kernel and device tree are stored in it (e.g. In this case one of the two eMMC boot partitions is used for boot loaders and the user partition is then used for rootfs and kernel. ATF and u-boot) whereas eMMC for kernel and rootfs. QSPI is normally used for firmware / boot loaders (i.e. In most of the Linux applications covered by the RZ/G2L, when it comes to non-volatile memory there are two main use cases: 
When the eMMC is delivered from the manufactures is normally divided into several areas as shown below.
#Android u boot source serial#
RZ/G2L boot modes are summarized in the table below.ġ.8-V Single Quad or Octal serial flash memory RZ/G2L boot modes and typical boot storage media The content of this page refers to RZ/G2L, however, given the similarities with RZ/V2L, RZ/G2LC and RZ/G2UL, the information included can be considered valid for these devices too.
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