git.cappig.dev | apheleiaOS.git - Boot and framebuffer fixes, add rootfs staging

da54886991faf1a7846260f76e3a3f3c9fb01385 master

cappig <[email protected]> · 4 months ago

Boot and framebuffer fixes, add rootfs staging

* Fix a bunch of real-mode addressing bugs in the BIOS bootloader
  (segment setup, INT 10h/13h calls, VBE init, A20 enable) and
  MBR stage 1 (INT 13h extension check, DMA boundary, DAP align)
* Stage rootfs into a contiguous memory region at boot, pass to
  kernel via boot_info_t. Kernel registers it as ram0 block device.
* UEFI bootloader: fix page table mapping for loader runtime
  memory and high-address framebuffers, stage rootfs from ESP,
  fix kernel jump asm
* Fix NX bit detection, e820 OOB access, 32-bit PDPT flag
  propagation, and a few other memory management bugs
* Window manager: pitch-aware framebuffer writes, EINTR retry.
  Default video mode changed to text.

24 files changed, 852 insertions, 300 deletions

kernel/arch/paging.h +27 -1

kernel/arch/x86/arch.c +128 -0

kernel/arch/x86/asm.h +1 -0

kernel/arch/x86/boot.h +3 -1

kernel/arch/x86/boot/bios/disk.c +64 -5

kernel/arch/x86/boot/bios/disk.h +1 -0

kernel/arch/x86/boot/bios/entry.asm +6 -4

kernel/arch/x86/boot/bios/main.c +17 -0

kernel/arch/x86/boot/bios/paging64.c +22 -4

kernel/arch/x86/boot/bios/vesa.c +69 -29

kernel/arch/x86/boot/mbr/mbr.asm +12 -2

kernel/arch/x86/boot/uefi/build.mk +2 -0

kernel/arch/x86/boot/uefi/main.c +197 -13

kernel/arch/x86/boot/uefi/util.c +1 -4

kernel/arch/x86/build/mbr.sh +6 -9

kernel/arch/x86/e820.c +8 -3

kernel/arch/x86/mm/virtual32.c +4 -4

kernel/disk_image.sh +69 -79

kernel/image.sh +28 -36

kernel/iso_image.sh +67 -87

kernel/lib/boot.h +1 -1

kernel/sys/disk.c +29 -14

user/wm/main.c +16 -0

user/wm/wm_loop.c +74 -4