# Copyright Jamie Iles, 2017
#
# This file is part of s80x86.
#
# s80x86 is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# s80x86 is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with s80x86.  If not, see <http://www.gnu.org/licenses/>.

include(GetGitRevisionDescription)

set(CMAKE_SYSTEM_NAME none)
set(CMAKE_SYSTEM_PROCESSOR ia16)
set(CMAKE_C_COMPILER ia16-elf-gcc)
set(CMAKE_ASM_COMPILER ia16-elf-gcc)

# IA16 GCC doesn't support -g
set(CMAKE_C_FLAGS_DEBUG "")
set(CMAKE_ASM_FLAGS_DEBUG "")

set(CMAKE_C_FLAGS "-Wall -ffunction-sections -Werror -ffreestanding -O2 -std=gnu99 -mtune=i80186 -march=i80186")
set(CMAKE_ASM_FLAGS "-Wall -Werror -ffreestanding -O2 -std=gnu99 -nostdinc -mtune=i80186 -march=i80186")
set(CMAKE_EXE_LINKER_FLAGS "-Wl,-Map=${CMAKE_CURRENT_BINARY_DIR}/bios.map -ffreestanding -nostdlib -T ${CMAKE_CURRENT_SOURCE_DIR}/bios.x")

get_git_head_revision(BIOS_NAME BIOS_BUILD HEAD)
git_local_changes(LOCAL_CHANGES)
string(TIMESTAMP BIOS_BUILD_DATE "%m/%d/%y" UTC)
string(TIMESTAMP BIOS_BUILD_DAY "0x%d" UTC)
string(TIMESTAMP BIOS_BUILD_MONTH "0x%m" UTC)
string(TIMESTAMP BIOS_BUILD_YEAR "0x%Y" UTC)
string(TIMESTAMP BIOS_BUILD_SECOND "0x%S" UTC)
string(TIMESTAMP BIOS_BUILD_MINUTE "0x%M" UTC)
string(TIMESTAMP BIOS_BUILD_HOUR "0x%H" UTC)

add_definitions(-D__PLATFORM__="${BIOS_PLATFORM}"
                -D__BUILD__="${BIOS_BUILD}+${LOCAL_CHANGES}"
                -DBIOS_BUILD_DATE=\"${BIOS_BUILD_DATE}\"
                -DBIOS_BUILD_DAY=${BIOS_BUILD_DAY}
                -DBIOS_BUILD_MONTH=${BIOS_BUILD_MONTH}
                -DBIOS_BUILD_YEAR=${BIOS_BUILD_YEAR}
                -DBIOS_BUILD_SECOND=${BIOS_BUILD_SECOND}
                -DBIOS_BUILD_MINUTE=${BIOS_BUILD_MINUTE}
                -DBIOS_BUILD_HOUR=${BIOS_BUILD_HOUR}
                -DCACHE_SIZE=${CACHE_SIZE})

add_executable(bios-${BIOS_PLATFORM}
               bios.c
	       disk.c
	       display.c
               entry.S
               io.h
	       keyboard.c
	       leds.c
	       leds.h
	       mouse_asm.S
	       mouse.c
	       mouse.h
               sd.c
               sd.h
	       printk.c
	       serial.c
	       serial.h
	       timer.h
	       timer.c
               utils.h
               utils.c)
