Re: STX7105(NEXTVOD) not booting
Rui-Xiang Guo <[email protected]> Sun, 28 Apr 2024 15:37:23 +0800
| Newsgroups | gmane.os.netbsd.ports.sh3 |
|---|---|
| Message-ID | <Zi38s2ONJAz1KSQr@picohive> |
> NEXTVOD config says at the very top it's work in progress and not even > expected to compile :) Yes, I saw the comments and expected to get at least the kernel panic. :) > Seriously so, I did spent some time on NEXTVOD during the early months > of lockdown but didn't get too far. NEXTVOD runs in the new "space > enhanced" 32-bit mode by default, using PMB, but NetBSD sh3 ports only > do 29-bit mode (fixed mappings for P0 &c). > > Writing a new pmap that uses 32-bit physical space requires time and > effort. We don't have many people using (not to mention working on) > sh3, given how the hardware is a bit exotic and not easy to come by. > > A palliative solution would be to use a verion of firmware that > doesn't switch to the 32-bit SE mode (limiting physical memory to > 512MB) or to do the mode switch song and dance early in the kernel (I > don't remember if NetBSD ever wants anything from the firmware once it > booted). At least the device drivers can be worked on in that setup. Indeed, the customized u-boot uses 32-bit mode: Board: STx7105-PDK [32-bit mode] Which path to the destination is shorter? -rxg