前段时间ST推出了Value Line的STM32F750和H750两个系列，看了一下选型表，F750有LQFP144封装，正好适合我的STM32 linux板子。
1 I* K/ g+ U  `1 }+ ?  S
于是，双十一买了几片。同时，我对我的linux板做了小幅改版：将SPI Flash容量扩大到32MB并连接到F750的QSPI
! ~' t8 M7 S8 z) N/ jBANK1，添加了CAN收发器和接口，增加了两个I2C外设（温湿度传感器和气压传感器）。板子做回来后先焊了一片，调试过程还算比较顺利，现在u-boot和Linux都工作起来了，下面是系统启动log，F750速度还是相当快的（427.62
' J' p* y5 t5 c* i# P8 X3 jBogoMIPS，F429跑Linux只有35.84
BogoMIPS），QSPI的加载速度也很给力。下一步我准备多测试几种STM32外设的Linux
driver，emcraft现在的SDK比两三年前多了不少外设驱动，可以都试试看。
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8 G7 v) [6 J2 ?4 Q' p2 @! D

3 O" j% {! @" G* N/ B

U-Boot 2010.03 (Nov 26 2018 - 21:30:21)
% d3 t5 C0 L/ Y2 L& x( H' r. W
# e* M. E" C8 h7 tCPU  : STM32F7 (Cortex-M7)
! G" i3 s" S/ p# @* [, T8 tFreqs: SYSCLK=216MHz,HCLK=216MHz,PCLK1=54MHz,PCLK2=108MHz
Board: STM32F750 Rev 1.0
DRAM:  64 MB
In:    serial
Out:   serial
Err:   serial
9 q! p. K' p  R+ ~6 ?QSPI:  32 MB mapped at 0x90000000
# A" n: o9 a+ O! \. ?4 @Net:   miiphy_register done.
+ ]. {! N$ E& Zeth hw init done.
STM32_MAC
Hit any key to stop autoboot:  0
! \- g" X9 v' i3 J+ ^! ]8 z, Y2 kBooting from QSPI
## Booting kernel from Legacy Image at c0007fc0 ...
0 R7 q9 q8 K9 Y2 X" ^   Image Name:   Linux-4.2.0
   Image Type:   ARM Linux Multi-File Image (uncompressed)
   Data Size:    7496295 Bytes =  7.1 MB
   Load Address: c0008000
2 K9 s0 b) g" ]   Entry Point:  c0008001
* y$ a! u  H( ?/ \8 _   Contents:
5 s8 O0 l$ e; c+ a      Image 0: 7471388 Bytes =  7.1 MB
      Image 1: 24895 Bytes = 24.3 kB
   Verifying Checksum ... OK
## Flattened Device Tree from multi component Image at C0007FC0
   Booting using the fdt at 0xc0728128
4 q6 \0 n: Y8 h8 m5 \   Loading Multi-File Image ... OK
OK
" z! L/ f# l- f. q+ G" OWARNING: legacy format multi component image overwritten
* Y, E; D/ q& }: k2 c9 u   Loading Device Tree to c3ff6000, end c3fff13e ... OK
: R* Z# K& j+ |7 A7 v+ y
( t5 D) u+ ~5 ?* z- g) F/ KStarting kernel ...Booting Linux on physical CPU 0x0
7 C5 V0 t$ f  Y4 _9 B0 U* }7 p, xLinux version 4.2.0(gcc version 4.4.1 (Sourcery G++ Lite 2010
8 n( t. ^  z3 m3 {6 A, Fq1-189) ) #90 Tue Dec 4 03:32:33 EST 2018
CPU: ARMv7-M [410fc271] revision 1 (ARMv7M), cr=00000000
8 d0 B9 A7 S& V+ y* j% ]# X) OCPU: WBA data cache, WBA instruction cache
6 X( z" j! X7 }  U/ MMachine model: EmCraft Systems STM32F7-SOM board
0 m! h( T5 l& vBuilt 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
% o5 Y* @8 X1 M9 S3 W! AKernel command line: stm32_platform=stm32f7-disco console=ttyS0,115200 panic=10 ip=169.25
4.1.10:169.254.1.2:::stm32f7-disco:eth0:ff
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 56432K/65536K available (2523K kernel code, 181K rwdata, 588K rodata, 4000K init,
111K bss, 9104K reserved, 0K cma-reserved)
3 D8 W! u& ]* a3 oVirtual kernel memory layout:
( M% w2 U3 Y2 w6 r5 ]: k2 {1 w4 o. V    vector  : 0x00000000 - 0x00001000   (   4 kB)
4 H/ Y! [. o) [( P% n' J8 Z& y    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0x00000000 - 0xffffffff   (4095 MB)
* b  U2 {7 }9 D+ d* \    lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
      .text : 0xc0008000 - 0xc0312000   (3112 kB)
. o0 q: F: o- \: H1 r- y& L/ M      .init : 0xc0312000 - 0xc06fa000   (4000 kB)
      .data : 0xc06fa000 - 0xc07277c0   ( 182 kB)
       .bss : 0xc072811c - 0xc0743e84   ( 112 kB)

NR_IRQS:16 nr_irqs:16 16
( z$ r. N) `6 h5 v' S- z/ ]/interrupt-controller@40013c00: 24 External IRQs detected
2 ~2 n' z. ^9 {6 J. Pclocksource: arm_system_timer: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 27651335
( C% O& \" b% m; f7 P8 ns
ARM System timer initialized as clocksource
4 Y1 i/ j/ d' ^: M* C; G( B* y/soc/timer@40000000: STM32 clockevent driver initialized (32 bits)
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836475000000ns
Calibrating delay loop... 427.62 BogoMIPS (lpj=2138112)
1 V1 p% B/ h. n& F6 {pid_max: default: 4096 minimum: 301
5 b  f( {, n% r& J+ AMount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
) `6 c5 m9 y7 [5 @2 [) rdevtmpfs: initialized
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275
9 s9 _( ^4 ~# Q  l, R3 S/ L0000 ns
pinctrl core: initialized pinctrl subsystem
' u9 R' \/ `9 T# C3 K5 ^9 _NET: Registered protocol family 16
stm32-pinctrl pin-controller: nbanks = 11
stm32-pinctrl pin-controller: nfunctions = 20
+ z2 u/ w0 n. \2 tstm32-pinctrl pin-controller: ngroups = 23
7 @& \7 h- D* X% m& T1 J, \6 ostm32-pinctrl pin-controller: GPIOA bank added.
0 t9 N) |" `/ F5 Lstm32-pinctrl pin-controller: GPIOB bank added.
stm32-pinctrl pin-controller: GPIOC bank added.
stm32-pinctrl pin-controller: GPIOD bank added.
% E' i. s- x+ U0 xstm32-pinctrl pin-controller: GPIOE bank added.
% f/ V% U4 a+ w" w. Sstm32-pinctrl pin-controller: GPIOF bank added.
stm32-pinctrl pin-controller: GPIOG bank added.
stm32-pinctrl pin-controller: GPIOH bank added.
stm32-pinctrl pin-controller: GPIOI bank added.
" p% K$ M0 q/ ^# h; ~7 qstm32-pinctrl pin-controller: GPIOJ bank added.
stm32-pinctrl pin-controller: GPIOK bank added.
, v4 D3 o3 w' |; B% l) H3 t5 ?8 }stm32-pinctrl pin-controller: Function[0         name:i2c_1,    groups:1]
stm32-pinctrl pin-controller: Function[1         name:i2c_2,    groups:1]
stm32-pinctrl pin-controller: Function[2         name:i2c_3,    groups:1]
stm32-pinctrl pin-controller: Function[3         name:mac,      groups:2]
4 q- Q' _$ A4 w. G* E  d9 J, lstm32-pinctrl pin-controller: Function[4         name:sdio,     groups:1]
stm32-pinctrl pin-controller: Function[5         name:spi_2,    groups:1]
stm32-pinctrl pin-controller: Function[6         name:spi_4,    groups:1]
stm32-pinctrl pin-controller: Function[7         name:spi_5,    groups:1]
stm32-pinctrl pin-controller: Function[8         name:usart1,   groups:1]
stm32-pinctrl pin-controller: Function[9         name:usart6,   groups:1]
' h6 O4 W" I) @stm32-pinctrl pin-controller: Function[10        name:usart7,   groups:1]
stm32-pinctrl pin-controller: Function[11        name:usb_fs,   groups:1]
" R: c" x0 F% S' T9 w! D  q0 x6 d0 wstm32-pinctrl pin-controller: Function[12        name:usb_hs,   groups:1]
0 o: q% B& r% m* istm32-pinctrl pin-controller: Function[13        name:can_1,    groups:1]
stm32-pinctrl pin-controller: Function[14        name:adc1_in0_pin,     groups:1]
stm32-pinctrl pin-controller: Function[15        name:dac_out2_pin,     groups:1]
stm32-pinctrl pin-controller: Function[16        name:ltdc,     groups:1]
stm32-pinctrl pin-controller: Function[17        name:sai_2,    groups:1]
stm32-pinctrl pin-controller: Function[18        name:i2c_4,    groups:1]
stm32-pinctrl pin-controller: Function[19        name:gpio,     groups:3]
9 e" L: K' ]9 W; l- q  }stm32-dma 40026000.dma: STM32 DMA driver registered
& v; i- E0 u/ n% l8 j3 U# p  x) ?stm32-dma 40026400.dma: STM32 DMA driver registered
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
soc:phy_hs supply vcc not found, using dummy regulator
  {4 V4 |% y$ ^  N/ B8 q- Nsoc:phy_fs supply vcc not found, using dummy regulator
: t* [. ?! c% ~$ r9 Jpps_core: LinuxPPS API ver. 1 registered
; O: p9 N8 z9 o4 d0 h# d  n8 s3 A# S* rpps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
PTP clock support registered
( _+ @9 e% O0 z) PAdvanced Linux Sound Architecture Driver Initialized.
Bluetooth: Core ver 2.20
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
- i  Q1 Z  ~; |0 Q3 {Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP socket layer initialized
2 r/ v  ?2 S1 H1 M+ B( C# E) p8 bBluetooth: SCO socket layer initialized
4 M  I  R; z* E2 Tclocksource: Switched to clocksource arm_system_timer
6 |- E4 Y' ]% W0 M; }/ ]  NNET: Registered protocol family 2
! e8 N! s! I8 B1 |3 m' CTCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
" f" K2 W, V+ ^& O' [( QUDP hash table entries: 256 (order: 0, 4096 bytes)
+ c  R& Z4 s4 ^1 V( d, K  b9 s; bUDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
RPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
- Q4 Y2 U: k+ D4 e; S6 ^RPC: Registered tcp NFSv4.1 backchannel transport module.
8 k' v$ M3 ~' B- D) w- mPower Management for STM32
futex hash table entries: 16 (order: -5, 192 bytes)
6 r  N# E& S% M+ E% P$ L' N8 u" Hjffs2: version 2.2. (NAND) (SUMMARY)  漏 2001-2006 Red Hat, Inc.
" t5 g+ |" ?9 T' _: C% P+ F/ Yfuse init (API version 7.23)
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
io scheduler noop registered
io scheduler cfq registered (default)
stm32-pinctrl pin-controller: maps: function gpio group pwms num 2
. B! v* b" P) X7 B% m4 ?stm32-pwm pwm0: basing on TIM3.1(x16)
stm32-pinctrl pin-controller: maps: function ltdc group ltdc-0 num 29
( P) H3 l4 _9 ?0 l/ W6 G' Tstm32_lcdfb 40016800.ltdc: fb0: fb device registered successfully
STM32 USART driver initialized
stm32-pinctrl pin-controller: maps: function usart1 group usart1-0 num 3
: G* b. P. k! l+ l40011000.serial: ttyS0 at MMIO 0x40011000 (irq = 34, base_baud = 6750000) is a stm32-usar
t
. s. x' q8 T# G7 Hconsole [ttyS0] enabled
2 N- {- c- o1 s( X2 zstm32-pinctrl pin-controller: maps: function usart6 group usart6-0 num 3
5 X- S9 E8 r' ~6 j8 {5 z5 d2 V40011400.serial: ttyS5 at MMIO 0x40011400 (irq = 35, base_baud = 6750000) is a stm32-usar
t
/ o" L8 E# X1 Qnbd: registered device at major 43
3 o2 |5 T2 `5 ~  g7 kstm32-pinctrl pin-controller: maps: function dac_out2_pin group dac-0 num 2
stm32_dac 40007400.dac: dac1: no timer assigned, DMA functionality is not available
stm32_dac 40007400.dac: created 1 character devices with MAJOR 248
9 a" r1 r$ D  N: |, [2 ofpart partitions found on MTD device physmap-stm-flash.0
Creating 2 MTD partitions on "physmap-stm-flash.0":
0x000000000000-0x000000020000 : "stm_flash_uboot"
0 j  y9 m# W0 G  u2 r0x000000040000-0x000000100000 : "stm_flash_unused"
3 ~4 x4 r) }: `. `- [- Q  Kstm32-pinctrl pin-controller: maps: function spi_5 group spi_5-0 num 4
stm32-spi 40015000.spi: SPI Controller 4 at 40015000,irq=38,hz=108000000
7 ?- Z3 W! I  c- @) GCAN device driver interface
4 l! \- C6 S% T$ Hstm32-pinctrl pin-controller: maps: function can_1 group can_1-0 num 3
stm32-can 40006400.can: device registered (reg=40006400, irq=31)
stm32-pinctrl pin-controller: maps: function mac group mac_rmii num 10
stmmac - user ID: 0x10, Synopsys ID: 0x35
/ v  z7 v/ X9 E6 a Ring mode enabled
3 D& E8 [- w6 l. R1 T5 n# N6 f. Z, o DMA HW capability register supported
Enhanced/Alternate descriptors
) H; {1 O; _4 `  h9 S8 l( ]% u        Enabled extended descriptors
2 |5 b6 N; P; [& i$ ]5 ] RX Checksum Offload Engine supported (type 2)
TX Checksum insertion supported
Wake-Up On Lan supported
Enable RX Mitigation via HW Watchdog Timer
stm32-dwmac 40028000.ethernet eth0: No MDIO subnode found
libphy: stmmac: probed
- e# J/ _0 O0 p- A, Seth0: PHY ID 0007c0f1 at 0 IRQ POLL (stmmac-0:00) active
4 C  a; Z1 r$ W( h: f3 qPPP generic driver version 2.4.2
& K" }; T  Y2 D7 j& o6 \" k) N9 fPPP BSD Compression module registered
6 R6 z, `3 A5 \PPP Deflate Compression module registered
usbcore: registered new interface driver rt2800usb
stm32-pinctrl pin-controller: maps: function usb_hs group usb_hs-0 num 3
5 n& y2 N. N/ p* Y( Gdwc2 40040000.usb: DWC OTG Controller
dwc2 40040000.usb: new USB bus registered, assigned bus number 1
dwc2 40040000.usb: irq 56, io mem 0x00000000
; W/ b- Q" o. y: Z" X) [usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: DWC OTG Controller
2 A1 g& v# p* H- F- iusb usb1: Manufacturer: Linux 4.2.0 dwc2_hsotg
usb usb1: SerialNumber: 40040000.usb
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
1 j4 f7 ^4 |3 L3 Mstm32-pinctrl pin-controller: maps: function usb_fs group usb_fs-0 num 3
5 h4 a9 W2 r* W  `, _50000000.usb supply vusb_d not found, using dummy regulator
& ?" ~/ x+ d! q5 Q* V5 I, j& d50000000.usb supply vusb_a not found, using dummy regulator
1 H+ i  y! s( _' n8 e) F1 Idwc2 50000000.usb: EPs: 6, dedicated fifos, 512 entries in SPRAM
dwc2 50000000.usb: DCFG=0x08200000, DCTL=0x00000002, DIEPMSK=0000000b
dwc2 50000000.usb: GAHBCFG=0x00000000, GHWCFG1=0x00000000
: i0 m/ T$ u2 g: j( Tdwc2 50000000.usb: GRXFSIZ=0x000000a0, GNPTXFSIZ=0x004000a0
dwc2 50000000.usb: DPTx[1] FSize=32, StAddr=0x000000e0
dwc2 50000000.usb: DPTx[2] FSize=64, StAddr=0x00000100
* e5 T, m+ K' s* \& S# idwc2 50000000.usb: DPTx[3] FSize=512, StAddr=0x00000800
dwc2 50000000.usb: DPTx[4] FSize=512, StAddr=0x00000a00
dwc2 50000000.usb: DPTx[5] FSize=512, StAddr=0x00000c00
dwc2 50000000.usb: ep0-in: EPCTL=0x00008000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep0-out: EPCTL=0x00008000, SIZ=0x00000000, DMA=0x5abee5fb
/ T" J* v- M$ Xdwc2 50000000.usb: ep1-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
6 q8 w( N5 p6 x2 r  d* Cdwc2 50000000.usb: ep1-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
, g+ A* L" G6 ^4 S2 X8 v  j' t. Mdwc2 50000000.usb: ep2-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
0 S' T% i/ F1 H5 X# Zdwc2 50000000.usb: ep2-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep3-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
" M! ]1 V; q/ Q; J: x6 h. t9 adwc2 50000000.usb: ep3-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
' c0 `, b1 V2 P! k* C" a! @9 x2 Adwc2 50000000.usb: ep4-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep4-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
; J; e, p- a( |2 t$ C8 Pdwc2 50000000.usb: ep5-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep5-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: DVBUSDIS=0x000017d7, DVBUSPULSE=000005b8
+ J% B0 S7 u; h9 v! ]usbcore: registered new interface driver cdc_acm
3 l8 H" _. ?9 R. ]$ s3 A! Icdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
* `% [% G# |0 \0 O' S- pusbcore: registered new interface driver uas
usbcore: registered new interface driver usb-storage
g_serial gadget: Gadget Serial v2.4
# m8 ~& G/ C6 _' I/ m  Mg_serial gadget: g_serial ready
dwc2 50000000.usb: bound driver g_serial
3 c3 O. B6 @  p" h  Pi2c /dev entries driver
0 u7 \0 R" a/ S  Astm32-pinctrl pin-controller: maps: function i2c_4 group i2c_4-0 num 3
5 j5 @9 ~0 ]/ L* kbmp085 3-0077: Successfully initialized bmp085!
stm32f7-i2c 40006000.i2c: I2C Controller i2c-3 at 40006000,irq=58
% N1 D. `/ U* q' WDriver for 1-wire Dallas network protocol.
' L4 K* v6 s0 a; v: u) v2 Y& [, e3 ausbcore: registered new interface driver btusb
2 n. m# ~7 X$ q* R6 L* l: Lstm32-pinctrl pin-controller: maps: function sdio group sdio-0 num 7
mmci-pl18x 40012c00.sdi: Got CD GPIO
mmci-pl18x 40012c00.sdi: mmc0: PL180 manf 80 rev4 at 0x40012c00 irq 37,0 (pio)
stm32-dma 40026400.dma: stm32_dma_of_xlate: unable to get channel 3 - was already request
" H# b* [# \: q: q' _) hed
8 e; S/ z( H( b% ~3 \mmci-pl18x 40012c00.sdi: DMA channels RX dma1chan3, TX dma1chan3
. }* u1 j* A# o) W+ z, _stm32_gpio_to_irq: Event line 3 now points to fire interrupts from bank G
, \/ e5 S% u! B0 X3 }- Estm32-pinctrl pin-controller: maps: function gpio group outs num 2
" t, ]" E5 n' L, Thidraw: raw HID events driver (C) Jiri Kosina
4 i+ R2 l: ]' ?usbcore: registered new interface driver usbhid
1 n1 |6 y$ V+ x7 rusbhid: USB HID core driver
stm32-pinctrl pin-controller: maps: function adc1_in0_pin group adc1-0 num 2
stm32f4-adc 40012000.adc: registered
4 j/ P+ u( M' b: v/ dstm32-pinctrl pin-controller: maps: function sai_2 group sai_2-0 num 5
/ [! M9 e, n5 u- m; d# bstm32-dma 40026400.dma: stm32_dma_of_xlate: unable to get channel 4 - was already request
( C2 b5 ^# Z& V; e3 @ed
stm32-asoc-card sound: failed to find codec platform device
  i- y8 [7 U8 K- C9 |- |8 e6 Hstm32-asoc-card: probe of sound failed with error -22
NET: Registered protocol family 17
3 k. V3 V6 K8 q- C% Vcan: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
9 f& b: @" M, F+ Z0 H8 Ican: raw protocol (rev 20120528)
can: broadcast manager protocol (rev 20120528 t)
can: netlink gateway (rev 20130117) max_hops=1
* i2 f/ o  g: w) w9 x8 [1 H# N* HBluetooth: RFCOMM TTY layer initialized
% g# m0 t1 G5 V. o4 iBluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM ver 1.11
hctosys: unable to open rtc device (rtc0)
) _% l+ B# C" lvmmc: disabling
$ v8 Z/ n% |0 j& cALSA device list:
  No soundcards found.
Freeing unused kernel memory: 4000K (c0312000 - c06fa000)
+ n8 }" s! m; N/ X+ e/ j5 W% zinit started: BusyBox v1.24.2 (2018-11-22 20:35:58 EST)
8 k% Z6 W. w3 l1 R! g% ~. j/ # amixer: Mixer attach default error: No such file or directory
stm32-dwmac 40028000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
- K1 D  G* u6 u- E# e' x& [
( O8 ^3 a0 g1 t) @6 c/ # free
             total       used       free     shared    buffers     cached
( H' g5 ]! Z9 R* D) K+ wMem:         60432       8140      52292          0          0       4792
-/+ buffers/cache:       3348      57084
/ #

0 n( z& g0 q! N8 L
+ q5 u$ W- }4 L

$ f+ f7 c" \- Z! t* l, ^