src/starkernel/hal/

Hardware-abstraction-layer implementation, backing include/starkernel/hal/hal.h.

hal.c — top-level HAL dispatch.
console.c — UART 16550 console driver.
framebuffer.c, font_8x16.c, vt100.c — framebuffer console driver, its bitmap font, and VT100 terminal emulation over the framebuffer.
memory.c — HAL-level memory query interface.
host_services.c — host-service shims used by kernel code that needs a narrow, testable interface to hardware/firmware services.