Date: Sat, 6 Jun 2020 14:55:27 -0500 From: Kyle Evans <kevans@freebsd.org> To: Robert Crowston <crowston@protonmail.com> Cc: =?UTF-8?Q?Klaus_K=C3=BCchemann?= <maciphone2@googlemail.com>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: Report: FreeBSD on Rpi4 8 GB model Message-ID: <CACNAnaE8hvyRWZQQ6fXcy2HtEn6uDC5t_uR36zh1ba25=GT9ng@mail.gmail.com> In-Reply-To: <TOfPYaU1tsGAVzQ8BHRMQKLpEJ3n-kGyxXrTnkciwTs5iQQlrRsN-ZfV_Dp2hbhfJR8mJHIaaPm6CTCW-Ga2kyA0cwG_IVWfq6wQZBWgiLA=@protonmail.com> References: <kb9ZDoXeXjZQGaI_pHItcwGDLz9nl5FzAe-_mxkI1N9MAFSkDpvFbwt-JUy-YmoOg-3C9bFyiNYgUoGvAnJZvsxbbGVHP4ZlUC84EgCd6A0=@protonmail.com> <F6CF4F00-44EA-4980-9B45-F7EE92738351@googlemail.com> <CACNAnaGwsrgQsSGxxOTr4n6cxP_ts3Z07pmTwb8inGzNXR2B3w@mail.gmail.com> <D14EC630-3BE9-4E19-B76A-B721C2BBBF75@googlemail.com> <TOfPYaU1tsGAVzQ8BHRMQKLpEJ3n-kGyxXrTnkciwTs5iQQlrRsN-ZfV_Dp2hbhfJR8mJHIaaPm6CTCW-Ga2kyA0cwG_IVWfq6wQZBWgiLA=@protonmail.com>
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On Sat, Jun 6, 2020 at 2:45 PM Robert Crowston <crowston@protonmail.com> wrote: > > > No, SPIN_PAGES=2 is fine > > I confirm that CONFIG_RPI_EFI_NR_SPIN_PAGES 2 is sufficient. > Thanks for confirming. :-) > > Even without this setting, it should still largely boot; > > you'll just only have half the memory you wanted. > > Without raising the spin pages limit, the kernel panics while trying to start the secondary CPUs. I don't have a working JTAG so I can't diagnose exactly why, but the spin table thing seemed like an obvious thing to check. > Sorry, that was specifically referring to raising CONFIG_NR_DRAM_BANKS -- an unmodified sysutils/u-boot-rpi4 (which uses CONFIG_RPI_EFI_NR_SPIN_PAGES=2) should boot with half the RAM recognized, and bumping CONFIG_NR_DRAM_BANKS in our fragment should correct that.
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