Re: Any experiences with Tow-Boot on Pinebook Pro

[Nikita <nekiti%gmail.com@localhost>]

I am aware of /dev/spiflash0, but if I dd to it on netbsd, I get “device not configured” message even on GENERIC64 kernel (rkspi enabled).

> On 7. Sep 2022, at 22.27, Tobias Nygren <tnn%NetBSD.org@localhost> wrote:
> 
> On Wed, 7 Sep 2022 20:30:15 +0300
> Nikita <nekiti%gmail.com@localhost> wrote:
> 
>> Also how did you flash the SPI? NetBSD seems incapable of this.
> 
> On NetBSD-current, the SPI flash should appear as /dev/spiflash0,
> a regular block device which can be written to with dd(1).
> Beware that the RK3399 processor has no bootstrap pins and the mask ROM
> is hardcoded to prefer booting from SPI flash with eMMC/SD as a
> fallback. So if a defective firmware (but with a valid signature) is
> flashed one must short the spi clock to ground or otherwise temporarily
> cripple the SPI bus in order to recover from SD card.
> 
> 
> 
>