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AM2732: 使用 uart_uniflash.py 和 default_sbl_qspi.cfg 烧录疑问

Part Number: AM2732
Other Parts Discussed in Thread: UNIFLASH

default_sbl_qspi.cfg 中 --flash-writer指向了 sbl_uart_uniflash.release.tiimage 。这个作用是?

我理解 2732 有固化的 bootloader,当我们选择 UART 启动模式时,固化的 bootloader 应该是等待xmodem发送过来的 SBL 镜像,这个镜像是 sbl_qspi.release.tiimage。还有一个 application image ,指的是hello_world.release.appimage。那 sbl_uart_uniflash.release.tiimage 作用是什么?与固化的bootloader 及 SBL 分别是什么关系?