fork of 9front i guess
bcf988aff1
on the 2GB and 4GB raspberry pi 4 variants, there are two memory regions for ram: [0x00000000..0x3e600000) [0x40000000..0xfc000000) the framebuffer is somewhere at the end of the first GB of memory. to handle these, we append the region base and limit of the second region to *maxmem= like: *maxmem=0x3e600000 0x40000000 0xfc000000 the mmu code has been changed to have non-existing ram unmapped and mmukmap() now uses small 64K pages instead of 512GB pages to avoid aliasing (framebuffer). the VIRTPCI mapping has been removed as we now have a proper vmap() implementation which assigns vritual addresses automatically. |
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