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Re: Pandaboard ES
On Tue, May 09, 2023 at 10:44:35AM -0400, Lwazi Dube wrote:
> On Tue, 9 May 2023 at 09:57, Rui-Xiang Guo <rxg%lavabit.com@localhost> wrote:
> > On Mon, May 01, 2023 at 07:31:07AM -0300, Jared McNeill wrote:
> > > The PANDABOARD kernel relies on firmware to program the base address of the
> > > GIC and local timers correctly in the CBAR cp15 register. Likely the reason
> > > that the GIC driver did not discover any valid sources:
> > >
> > > > [ 1.0000000] armgic0 at armperiph0: Generic Interrupt Controller, 32 sources (0 valid)
> > > > [ 1.0000000] armgic0: 1 Priorities, 0 SPIs, 0 PPIs, 0 SGIs
> > >
> > > With 0 valid sources, the A9 timer interrupt (and all others!) will not be
> > > available.
> > I found it also missed armscu_attach. When I tried to enable it by adding
> > MULTIPROCESSOR to conf/PANDABOARD, the new kernel just hang on very early
> > boot process.
> > [ 1.0000000] uboot arg = 0xbdf44f98, 0, 0xbffaad5e, 0xbdf46b08
> > [ 1.0000000] initarm: cbar=0x48240000
> > [ 1.0000000] [ Kernel symbol table missing! ]
> > Any ideas?
> > -rxg
> Every time I used NetBSD on the Pandaboard ES, I had to fix something
> first. I made the following changes for an older version. Maybe they
> will be useful to you.
Thanks for your information. Looks like Pandaboard has the TrustZone issue.
Additional spare time is required to delve into it.
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