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Directory structure of the project:
doc/
build/
Makefile
Makefile
src/
lib/
rs232/
rs232.c
rs232.h
host/
pipe_image.c
makefs.c
arm/
common/
svc_interface.h
strings.c
io.h
io.c
strings.h
PL0/
PL0_utils.h
svc.S
PL0_utils.c
PL0_test.c
PL0_test.ld
PL1/
loader/
loader_stage2.ld
loader_stage2.c
loader_stage1.S
loader.ld
kernel/
demo_functionality.c
paging.h
setup.c
interrupts.h
interrupt_vector.S
kernel.ld
scheduler.h
atags.c
translation_table_descriptors.h
bcmclock.h
ramfs.c
kernel_stage1.S
paging.c
ramfs.h
interrupts.c
armclock.h
atags.h
kernel_stage2.ld
cp_regs.h
psr.h
scheduler.c
memory.h
demo_functionality.h
PL1_common/
global.h
uart.h
uart.c
Meaning of significant directories and files:
doc/
Contains documentation of the project.
build/
Contains main Makefile of the project. All objects created during the build process are placed there.
Makefile
Proxies all calls to Makefile in build/.
src/
Contains all sources of the project.
src/host/
Contains sources of helper programs to be compiled using native GCC and run on the machine where development takes place.
src/arm/
Contains sources to be compiled using ARM cross-compiler GCC and run on the RaspberryPi.
src/arm/common
Contains sources used in both: privileged mode and unprivileged mode.
src/arm/PL0
Contains sources used exclusively in unprivileged, user-mode (PL0) program, as well as the program's linker script.
src/arm/PL1
Contains sources used exclusively in privileged (PL1) mode.
src/arm/PL1/loader
Contains sources used exclusively in the bootloader, as well as linker scripts for stages 1 and 2 of this bootloader.
src/arm/PL1/kernel
Contains sources used exclusively in the kernel, as well as linker scripts for stages 1 and 2 of this kernel.
src/arm/PL1/PL1_common
Contains sources used in both: kernel and bootloader.
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