#
# (C) COPYRIGHT 2010-2016 ARM Limited. All rights reserved.
#
# This program is free software and is provided to you under the terms of the
# GNU General Public License version 2 as published by the Free Software
# Foundation, and any use by you of this program is subject to the terms
# of such GNU licence.
#
# A copy of the licence is included with the program, and can also be obtained
# from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA  02110-1301, USA.
#
#


import os
import re
import sys
Import('env')


if Glob('tests/sconscript'):
	SConscript( 'tests/sconscript' )

mock_test = 0

# Fake platform is a transient solution for GPL drivers running in kernel that does not provide configuration via platform data.
# For such kernels fake_platform_device should be set to 1. For kernels providing platform data fake_platform_device should be set to 0.
if env['platform_config']=='devicetree':
	fake_platform_device = 0
else:
	fake_platform_device = 1

# Source files required for kbase.
kbase_src = [Glob('#kernel/drivers/gpu/arm/midgard/*.c'),
             Glob('#kernel/drivers/gpu/arm/midgard/*.c'),
             Glob('#kernel/drivers/gpu/arm/midgard/backend/*/*.c'),
             Glob('#kernel/drivers/gpu/arm/midgard/backend/*/*.h'),
             Glob('#kernel/drivers/gpu/arm/midgard/platform/%s/*.c' % (env['platform_config'])),
             Glob('#kernel/drivers/gpu/arm/midgard/*.h'),
             Glob('#kernel/drivers/gpu/arm/midgard/*.h'),
             Glob('#kernel/drivers/gpu/arm/midgard/Makefile',
             Glob('#kernel/drivers/gpu/arm/midgard/K*'))
             ]

kbase_src += [Glob('#kernel/drivers/gpu/arm/midgard/internal/*/*.c')]

if Glob('#kernel/drivers/gpu/arm/midgard/tests/internal/src/mock') and env['unit'] == '1':
	kbase_src += [Glob('#kernel/drivers/gpu/arm/midgard/tests/internal/src/mock/*.c')]
	mock_test = 1

# we need platform config for GPL version using fake platform
if fake_platform_device==1:
	# Check if we are compiling for PBX
	linux_config_file = os.path.normpath(os.environ['KDIR']) + '/.config'
	search_term = '^[\ ]*CONFIG_MACH_REALVIEW_PBX[\ ]*=[\ ]*y'
	REALVIEW_PBX = 0
	for line in open(linux_config_file, 'r'):
		if re.search(search_term, line):
			REALVIEW_PBX = 1
			break
	if REALVIEW_PBX == 1 and (env['platform_config'] == 'vexpress' or env['platform_config'] == 'vexpress_6xvirtex7_10mhz'):
		sys.stderr.write("WARNING: Building for a PBX kernel but with platform_config=vexpress*\n")
	# if the file platform config file is in the tpip directory then use that, otherwise use the default config directory
	if Glob('#kernel/drivers/gpu/arm/midgard/config/tpip/*%s.c' % (env['platform_config'])):
		kbase_src += Glob('#kernel/drivers/gpu/arm/midgard/config/tpip/*%s.c' % (env['platform_config']))
	else:
		kbase_src += Glob('#kernel/drivers/gpu/arm/midgard/config/*%s.c' % (env['platform_config']))
	
# Note: cleaning via the Linux kernel build system does not yet work
if env.GetOption('clean') :
	env.Execute(Action("make clean", '[clean] kbase'))
	cmd = env.Command(['$STATIC_LIB_PATH/mali_kbase.ko', '$STATIC_LIB_PATH/mali_platform_fake.ko'], kbase_src, [])
else:
	if env['os'] == 'android':
		env['android'] = 1
	else:
		env['android'] = 0

	if env['unit'] == '1':
		env['kernel_test'] = 1
	else:
		env['kernel_test'] = 0

	#Extract environment options, note the trailing spaces are important
	env_options = \
	"PLATFORM=${platform} " +\
	"MALI_ERROR_INJECT_ON=${error_inject} " +\
	"MALI_ANDROID=${android} " +\
	"MALI_KERNEL_TEST_API=${kernel_test} " +\
	"MALI_UNIT_TEST=${unit} " +\
	"MALI_RELEASE_NAME=\"${mali_release_name}\" "+\
	"MALI_MOCK_TEST=%s " % mock_test +\
	"MALI_CUSTOMER_RELEASE=${release} " +\
	"MALI_INSTRUMENTATION_LEVEL=${instr} " +\
	"MALI_COVERAGE=${coverage} " +\
	"MALI_BUS_LOG=${buslog} "

	make_action_start = "cd ${SOURCE.dir} && make -j%d " % GetOption('num_jobs')
	make_action_end = "%s && cp mali_kbase.ko $STATIC_LIB_PATH/mali_kbase.ko" % env.kernel_get_config_defines(fake_platform_device)
	make_action = make_action_start + env_options + make_action_end

	makeAction=Action(make_action, '$MAKECOMSTR')
	cmd = env.Command('$STATIC_LIB_PATH/mali_kbase.ko', kbase_src, [makeAction])

# Add a dependency on kds.ko.
# Only necessary when KDS is not built into the kernel.
#
if env['os'] != 'android':
	linux_config_file = os.path.normpath(os.environ['KDIR']) + '/.config'
	search_term = '^[\ ]*CONFIG_KDS[\ ]*=[\ ]*y'
	kds_in_kernel = 0
	for line in open(linux_config_file, 'r'):
		if re.search(search_term, line):
	        # KDS in kernel.
			kds_in_kernel = 1
	if not kds_in_kernel:
		env.Depends('$STATIC_LIB_PATH/mali_kbase.ko', '$STATIC_LIB_PATH/kds.ko')

# need Module.symvers from ump.ko build
if int(env['ump']) == 1:
	env.Depends('$STATIC_LIB_PATH/mali_kbase.ko', '$STATIC_LIB_PATH/ump.ko')

env.KernelObjTarget('kbase', cmd)

env.AppendUnique(BASE=['cutils_linked_list'])