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source: trunk/platforms/tsar_generic_leti/arch.py @ 848

Last change on this file since 848 was 826, checked in by cfuguet, 10 years ago

tsar_generic_leti: introduce emulator mode

IO cluster is not instantiated when USE_PIC == 0

Property svn:executable set to *

File size: 16.4 KB

Rev	Line
[793]	1	#!/usr/bin/env python
	2
[803]	3	from math import log, ceil
[793]	4	from mapping import *
	5
	6	###############################################################################
[803]	7	# file : arch.py (for the tsar_generic_leti architecture)
[793]	8	# date : may 2014
	9	# author : Alain Greiner
	10	###############################################################################
[803]	11	# This file contains a mapping generator for the "tsar_generic_leti" platform.
[793]	12	# This includes both the hardware architecture (clusters, processors,
	13	# peripherals, physical space segmentation) and the mapping of all kernel
[803]	14	# objects (global vsegs).
[793]	15	#
	16	# The "constructor" parameters are:
	17	# - x_size : number of clusters in a row
	18	# - y_size : number of clusters in a column
	19	# - nb_procs : number of processors per cluster
[820]	20	# - fbf_width : frame_buffer width = frame_buffer heigth
[793]	21	#
	22	# The "hidden" parameters (defined below) are:
	23	# - nb_ttys : number of TTY channels
	24	# - nb_nics : number of NIC channels
	25	# - x_io : cluster_io x coordinate
	26	# - y_io : cluster_io y coordinate
	27	# - x_width : number of bits for x coordinate
	28	# - y_width : number of bits for y coordinate
	29	# - paddr_width : number of bits for physical address
	30	# - irq_per_proc : number of input IRQs per processor
	31	# - use_ramdisk : use a ramdisk when True
	32	# - peri_increment : address increment for replicated peripherals
[820]	33	#
	34	# Regarding physical memory allocation, there is one allocator per cluster:
	35	# - We use only one big physical page (2 Mbytes) for the five boot vsegs,
	36	# allocated in cluster[0,0], identity mapping.
	37	# - We use one big page per cluster for the kernel vsegs.
	38	# The kernel_code, kernel_init and kernel_ptab can be replicated in all clusters.
	39	# The kernel_data and kernel_uncdata shared vsegs are only mapped in cluster[0,0].
	40	# - We use 8 small physical pages (4 Kbytes) per cluster for the schedulers.
	41	# - We use one big page for each external peripheral in IO cluster,
	42	# - We use one small page per cluster for each internal peripheral.
	43	###################################################################################
[793]	44
	45	########################
[820]	46	def arch( x_size = 2,
	47	y_size = 2,
	48	nb_procs = 2,
	49	fbf_width = 128 ):
[793]	50
	51	### define architecture constants
	52
[820]	53	nb_ttys = 1
	54	nb_nics = 2
	55	x_io = 0
	56	y_io = 0
	57	x_width = 4
	58	y_width = 4
[822]	59	p_width = 2
[820]	60	paddr_width = 40
	61	irq_per_proc = 4
	62	use_ramdisk = True
	63	peri_increment = 0x10000 # distributed peripherals vbase address increment
	64	sched_increment = 0x10000 # distributed schedulers vbase address increment
	65	ptab_increment = 0x200000 # distributed page tables vbase address increment
	66	reset_address = 0x00000000
[793]	67
	68	### parameters checking
	69
[803]	70	assert( nb_procs <= (1 << p_width) )
[793]	71
	72	assert( (x_size == 1) or (x_size == 2) or (x_size == 4)
	73	or (x_size == 8) or (x_size == 16) )
	74
	75	assert( (y_size == 1) or (y_size == 2) or (y_size == 4)
	76	or (y_size == 8) or (y_size == 16) )
	77
	78	assert( nb_ttys == 1 )
	79
	80	assert( ((x_io == 0) and (y_io == 0)) or
	81	((x_io == x_size-1) and (y_io == y_size-1)) )
	82
[803]	83	platform_name = 'tsar_leti_%d_%d_%d' % ( x_size, y_size, nb_procs )
[793]	84
	85	### define physical segments
[820]	86	### These segments are replicated in all clusters
[793]	87
	88	ram_base = 0x0000000000
	89	ram_size = 0x4000000 # 64 Mbytes
	90
	91	xcu_base = 0x00F0000000
	92	xcu_size = 0x1000 # 4 Kbytes
	93
	94	mmc_base = 0x00E0000000
	95	mmc_size = 0x1000 # 4 Kbytes
	96
[820]	97	### define physical segments for external peripherals
	98	## These segments are only defined in cluster_io
	99
[793]	100	offset_io = ((x_io << y_width) + y_io) << (paddr_width - x_width - y_width)
	101
	102	bdv_base = 0x00F2000000 + offset_io
	103	bdv_size = 0x1000 # 4kbytes
	104
	105	tty_base = 0x00F4000000 + offset_io
	106	tty_size = 0x4000 # 16 Kbytes
	107
	108	nic_base = 0x00F7000000 + offset_io
	109	nic_size = 0x80000 # 512 kbytes
	110
	111	cma_base = 0x00F8000000 + offset_io
	112	cma_size = 0x1000 * 2 * nb_nics # 4 kbytes * 2 * nb_nics
	113
	114	fbf_base = 0x00F3000000 + offset_io
	115	fbf_size = fbf_width * fbf_width # fbf_width * fbf_width bytes
	116
	117	pic_base = 0x00F9000000 + offset_io
	118	pic_size = 0x1000 # 4 Kbytes
	119
	120	rdk_base = 0x02000000
	121	rdk_size = 0x02000000 # 32 Mbytes
	122
[819]	123	### define preloader & bootloader vsegs base addresses and sizes
[820]	124	### We want to pack these 5 vsegs in the same big page
	125	### => boot cost is one BPP in cluster[0][0]
[803]	126
	127	preloader_vbase = 0x00000000 # ident
	128	preloader_size = 0x00010000 # 64 Kbytes
	129
	130	boot_mapping_vbase = 0x00010000 # ident
[793]	131	boot_mapping_size = 0x00080000 # 512 Kbytes
	132
[803]	133	boot_code_vbase = 0x00090000 # ident
[793]	134	boot_code_size = 0x00040000 # 256 Kbytes
	135
[803]	136	boot_data_vbase = 0x000D0000 # ident
[793]	137	boot_data_size = 0x00080000 # 512 Kbytes
	138
[803]	139	boot_stack_vbase = 0x00150000 # ident
[793]	140	boot_stack_size = 0x00050000 # 320 Kbytes
	141
	142	### define kernel vsegs base addresses and sizes
[820]	143	### code, init, ptab & sched vsegs are replicated in all clusters.
	144	### data & uncdata vsegs are only mapped in cluster[0][0].
	145	### - We pack code, init, data vsegs in the same BIG page.
	146	### - We use another BIG page for the ptab vseg.
	147	### - We use 2*nb_procs SMALL pages for the sched vseg.
	148	### - we use one SMALL page for uncdata
	149	### => kernel cost is 2 BPPs and (2*n + 1) SPPs per cluster.
	150
[793]	151	kernel_code_vbase = 0x80000000
[819]	152	kernel_code_size = 0x00080000 # 512 Kbytes per cluster
[793]	153
[819]	154	kernel_init_vbase = 0x80080000
	155	kernel_init_size = 0x00080000 # 512 Kbytes per cluster
[793]	156
[819]	157	kernel_data_vbase = 0x80100000
[820]	158	kernel_data_size = 0x00100000 # 1 Mbytes in cluster[0][0]
[793]	159
[825]	160	kernel_uncdata_vbase = 0x80200000
[819]	161	kernel_uncdata_size = 0x00001000 # 4 Kbytes
[793]	162
[825]	163	kernel_sched_vbase = 0x80400000 # distributed in all clusters
[820]	164	kernel_sched_size = 0x00002000 * nb_procs # 8 kbytes per processor
[819]	165
[825]	166	kernel_ptab_vbase = 0xC0000000
	167	kernel_ptab_size = 0x00200000 # 2 Mbytes per cluster
	168
[793]	169	### create mapping
	170
	171	mapping = Mapping( name = platform_name,
	172	x_size = x_size,
	173	y_size = y_size,
[819]	174	nprocs = nb_procs,
[793]	175	x_width = x_width,
	176	y_width = y_width,
[803]	177	p_width = p_width,
[793]	178	paddr_width = paddr_width,
	179	coherence = True,
	180	irq_per_proc = irq_per_proc,
	181	use_ramdisk = use_ramdisk,
	182	x_io = x_io,
	183	y_io = y_io,
	184	peri_increment = peri_increment,
	185	reset_address = reset_address,
	186	ram_base = ram_base,
	187	ram_size = ram_size )
	188
	189	### external peripherals (accessible in cluster[0,0] only for this mapping)
	190
[820]	191	bdv = mapping.addPeriph( 'BDV', base = bdv_base, size = bdv_size, ptype = 'IOC', subtype = 'BDV' )
[793]	192
[820]	193	tty = mapping.addPeriph( 'TTY', base = tty_base, size = tty_size, ptype = 'TTY', channels = nb_ttys )
[793]	194
[826]	195	if x_io != 0 or y_io != 0:
	196	nic = mapping.addPeriph( 'NIC', base = nic_base, size = nic_size, ptype = 'NIC', channels = nb_nics )
	197	cma = mapping.addPeriph( 'CMA', base = cma_base, size = cma_size, ptype = 'CMA', channels = 2*nb_nics )
	198	fbf = mapping.addPeriph( 'FBF', base = fbf_base, size = fbf_size, ptype = 'FBF', arg = fbf_width )
	199	pic = mapping.addPeriph( 'PIC', base = pic_base, size = pic_size, ptype = 'PIC', channels = 32 )
[793]	200
[826]	201	mapping.addIrq( pic, index = 0 , isrtype = 'ISR_NIC_RX', channel = 0 )
	202	mapping.addIrq( pic, index = 1 , isrtype = 'ISR_NIC_RX', channel = 1 )
	203	mapping.addIrq( pic, index = 2 , isrtype = 'ISR_NIC_TX', channel = 0 )
	204	mapping.addIrq( pic, index = 3 , isrtype = 'ISR_NIC_TX', channel = 1 )
	205	mapping.addIrq( pic, index = 4 , isrtype = 'ISR_CMA' , channel = 0 )
	206	mapping.addIrq( pic, index = 5 , isrtype = 'ISR_CMA' , channel = 1 )
	207	mapping.addIrq( pic, index = 6 , isrtype = 'ISR_CMA' , channel = 2 )
	208	mapping.addIrq( pic, index = 7 , isrtype = 'ISR_CMA' , channel = 3 )
	209	mapping.addIrq( pic, index = 8 , isrtype = 'ISR_BDV' , channel = 0 )
	210	mapping.addIrq( pic, index = 16, isrtype = 'ISR_TTY_RX', channel = 0 )
[793]	211
[826]	212	mapping.addGlobal( 'seg_nic', nic_base, nic_size, '__W_',
	213	vtype = 'PERI', x = 0, y = 0, pseg = 'NIC',
	214	local = False, big = True )
[793]	215
[826]	216	mapping.addGlobal( 'seg_cma', cma_base, cma_size, '__W_',
	217	vtype = 'PERI', x = 0, y = 0, pseg = 'CMA',
	218	local = False, big = True )
[793]	219
[826]	220	mapping.addGlobal( 'seg_fbf', fbf_base, fbf_size, '__W_',
	221	vtype = 'PERI', x = 0, y = 0, pseg = 'FBF',
	222	local = False, big = True )
[793]	223
[826]	224	mapping.addGlobal( 'seg_pic', pic_base, pic_size, '__W_',
	225	vtype = 'PERI', x = 0, y = 0, pseg = 'PIC',
	226	local = False, big = True )
	227
[793]	228	### hardware components replicated in all clusters
	229
	230	for x in xrange( x_size ):
	231	for y in xrange( y_size ):
	232	cluster_xy = (x << y_width) + y;
	233	offset = cluster_xy << (paddr_width - x_width - y_width)
	234
[820]	235	ram = mapping.addRam( 'RAM', base = ram_base + offset, size = ram_size )
[793]	236
[820]	237	mmc = mapping.addPeriph( 'MMC', base = mmc_base + offset, size = mmc_size,
	238	ptype = 'MMC' )
[793]	239
[820]	240	xcu = mapping.addPeriph( 'XCU', base = xcu_base + offset, size = xcu_size,
	241	ptype = 'XCU', channels = nb_procs * irq_per_proc, arg = 16 )
[793]	242
	243	# IRQs replicated in all clusters
	244	mapping.addIrq( xcu, index = 8, isrtype = 'ISR_MMC' )
	245
	246	# IRQ in IO cluster (0,0)
	247	if x == 0 and y == 0:
	248	mapping.addIrq( xcu, index = 9 , isrtype = 'ISR_BDV' )
	249	mapping.addIrq( xcu, index = 10, isrtype = 'ISR_TTY_RX' )
	250
	251	# processors
	252	for p in xrange ( nb_procs ):
	253	mapping.addProc( x, y, p )
	254
[820]	255	### global vsegs for preloader & boot_loader
	256	### we want to pack those 5 vsegs in the same big page
	257	### => same flags CXW_ / identity mapping / non local / big page
[793]	258
[820]	259	mapping.addGlobal( 'seg_preloader', preloader_vbase, preloader_size,
[819]	260	'CXW_', vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM',
	261	identity = True, local = False, big = True )
	262
[793]	263	mapping.addGlobal( 'seg_boot_mapping', boot_mapping_vbase, boot_mapping_size,
[819]	264	'CXW_', vtype = 'BLOB' , x = 0, y = 0, pseg = 'RAM',
	265	identity = True, local = False, big = True )
[793]	266
	267	mapping.addGlobal( 'seg_boot_code', boot_code_vbase, boot_code_size,
	268	'CXW_', vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM',
[819]	269	identity = True, local = False, big = True )
[793]	270
	271	mapping.addGlobal( 'seg_boot_data', boot_data_vbase, boot_data_size,
[819]	272	'CXW_', vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM',
	273	identity = True, local = False, big = True )
[793]	274
	275	mapping.addGlobal( 'seg_boot_stack', boot_stack_vbase, boot_stack_size,
[819]	276	'CXW_', vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM',
	277	identity = True, local = False, big = True )
[793]	278
[820]	279	### global vsegs kernel_code, kernel_init : local / big page
	280	### replicated in all clusters with the same name (same vbase)
[819]	281	for x in xrange( x_size ):
	282	for y in xrange( y_size ):
	283	mapping.addGlobal( 'seg_kernel_code', kernel_code_vbase, kernel_code_size,
[820]	284	'CXW_', vtype = 'ELF', x = x, y = y, pseg = 'RAM',
	285	binpath = 'build/kernel/kernel.elf',
[819]	286	local = True, big = True )
[793]	287
[819]	288	mapping.addGlobal( 'seg_kernel_init', kernel_init_vbase, kernel_init_size,
[820]	289	'CXW_', vtype = 'ELF', x = x, y = y, pseg = 'RAM',
[819]	290	binpath = 'build/kernel/kernel.elf',
	291	local = True, big = True )
[793]	292
[820]	293	### global vseg kernel_data: non local / big page
	294	### Only mapped in cluster[0][0]
[793]	295	mapping.addGlobal( 'seg_kernel_data', kernel_data_vbase, kernel_data_size,
[825]	296	'CXW_', vtype = 'ELF', x = 0, y = 0, pseg = 'RAM',
	297	binpath = 'build/kernel/kernel.elf',
	298	local = False, big = True )
[793]	299
[820]	300	### global vseg kernel_uncdata: non local / small page
	301	### Only mapped in cluster[0][0]
[793]	302	mapping.addGlobal( 'seg_kernel_uncdata', kernel_uncdata_vbase, kernel_uncdata_size,
	303	'__W_', vtype = 'ELF', x = 0, y = 0, pseg = 'RAM',
[825]	304	binpath = 'build/kernel/kernel.elf',
	305	local = False, big = False )
[793]	306
[820]	307	for x in xrange( x_size ):
	308	for y in xrange( y_size ):
	309	cluster_xy = (x << y_width) + y;
	310
	311	### Global vsegs kernel_ptab_x_y: non local / big pages
	312	### replicated in all clusters with name indexed by (x,y)
	313	### as vbase address is incremented by (cluster_xy * vseg_increment)
	314	offset = cluster_xy * ptab_increment
	315	mapping.addGlobal( 'seg_kernel_ptab_%d_%d' %(x,y), kernel_ptab_vbase + offset, kernel_ptab_size,
	316	'CXW_', vtype = 'PTAB', x = x, y = y, pseg = 'RAM',
	317	local = False, big = True )
	318
	319	### global vsegs kernel_sched : non local / small pages
	320	### allocated in all clusters with name indexed by (x,y)
	321	### as vbase address is incremented by (cluster_xy * vseg_increment)
	322	offset = cluster_xy * sched_increment
[825]	323	mapping.addGlobal( 'seg_kernel_sched_%d_%d' %(x,y), kernel_sched_vbase + offset, kernel_sched_size,
[820]	324	'C_W_', vtype = 'SCHED', x = x, y = y, pseg = 'RAM',
	325	local = False, big = False )
	326
	327	### global vseg for ram disk
	328	if use_ramdisk:
	329	mapping.addGlobal( 'seg_rdk', rdk_base, rdk_size, '__W_',
	330	vtype = 'BUFFER', x = 0, y = 0, pseg = 'RAM',
	331	identity = True, local = False, big = True )
	332
	333	### global vsegs for external peripherals: non local / big page
	334	mapping.addGlobal( 'seg_bdv', bdv_base, bdv_size, '__W_',
	335	vtype = 'PERI', x = 0, y = 0, pseg = 'BDV',
	336	local = False, big = True )
	337
	338	mapping.addGlobal( 'seg_tty', tty_base, tty_size, '__W_',
	339	vtype = 'PERI', x = 0, y = 0, pseg = 'TTY',
	340	local = False, big = True )
	341
	342	### global vsegs for internal peripherals : non local / small pages
	343	### allocated in all clusters with name indexed by (x,y)
	344	### as vbase address is incremented by (cluster_xy * vseg_increment)
	345	for x in xrange( x_size ):
	346	for y in xrange( y_size ):
	347	offset = ((x << y_width) + y) * peri_increment
	348
	349	mapping.addGlobal( 'seg_xcu_%d_%d' %(x,y), xcu_base + offset, xcu_size,
	350	'__W_', vtype = 'PERI' , x = x , y = y , pseg = 'XCU',
	351	local = False, big = False )
	352
	353	mapping.addGlobal( 'seg_mmc_%d_%d' %(x,y), mmc_base + offset, mmc_size,
	354	'__W_', vtype = 'PERI' , x = x , y = y , pseg = 'MMC',
	355	local = False, big = False )
	356
[793]	357	### return mapping ###
	358
	359	return mapping
	360
	361	################################# platform test #######################################################
	362
	363	if __name__ == '__main__':
	364
	365	mapping = arch( x_size = 2,
	366	y_size = 2,
	367	nb_procs = 2 )
	368
	369	# print mapping.netbsd_dts()
	370
	371	print mapping.xml()
	372
	373	# print mapping.giet_vsegs()
	374
	375
	376	# Local Variables:
	377	# tab-width: 4;
	378	# c-basic-offset: 4;
	379	# c-file-offsets:((innamespace . 0)(inline-open . 0));
	380	# indent-tabs-mode: nil;
	381	# End:
	382	#
	383	# vim: filetype=python:expandtab:shiftwidth=4:tabstop=4:softtabstop=4
	384

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