Date: Sun, 11 Sep 2022 16:31:21 +0100 From: void <void@f-m.fm> To: freebsd-hackers@freebsd.org Subject: [can freebsd utilise gpu split memory on rpi4] Message-ID: <Yx3/SeQEk0%2BwmisE@void.f-m.fm>
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Hello, Posting this here in the hope that someone might know a bit about arm64 internals in the way cpu/gmu memory split applies or doesn't apply for x11 etc on -current. TIA ----- Forwarded message from void <void@f-m.fm> ----- Date: Sun, 4 Sep 2022 15:00:35 +0100 From: void <void@f-m.fm> To: freebsd-arm@freebsd.org Subject: can freebsd utilise gpu split memory on rpi4 Mail-Followup-To: freebsd-arm@freebsd.org List-Id: Porting FreeBSD to ARM processors <freebsd-arm.freebsd.org> Hi, tl;dr : I'm trying to make a freebsd desktop configuration for rpi4b. Is freebsd able to utilise the GPU part of the raspberry pi 4b? In config.txt there can be a GPU_MEM statement for a variable size, the remaining memory being used by the CPU. Would it make sense to set this as large as possible for a desktop environment, or will it simply subtract from available memory and not be used, or does it not have any effect at all in freebsd/xorg ? GPU memory split appears under legacy options. https://www.raspberrypi.com/documentation/computers/config_txt.html#legacy-options it's not clear to me if these would even work under latest firmware. -- ----- End forwarded message ----- --
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