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。
7 m2 r' Z0 ?3 b, C
4 ?3 D! k$ E- O9 n
" B5 Z0 o, Z* [. Y& @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
BANK1，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
BogoMIPS，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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* [$ m- }+ e; h- N3 U$ d; @- x! S


U-Boot 2010.03 (Nov 26 2018 - 21:30:21)
: W. i8 |! K3 u
! h7 p0 i  g3 I5 ICPU  : STM32F7 (Cortex-M7)
8 R8 y- `, h* S! X) V2 V, g$ K9 K: tFreqs: SYSCLK=216MHz,HCLK=216MHz,PCLK1=54MHz,PCLK2=108MHz
6 n+ h  ^& X# C( x) {& Q% VDRAM:  64 MB
In:    serial
Out:   serial
Err:   serial
QSPI:  32 MB mapped at 0x90000000
Net:   miiphy_register done.
eth hw init done.
STM32_MAC
) v3 a2 V9 y$ b/ X1 u0 L5 JHit any key to stop autoboot:  0
Booting from QSPI
" P" y0 m& H/ G: ^; T9 `2 Y## Booting kernel from Legacy Image at c0007fc0 ...
) p) k  o& @. Q4 d  H4 R   Image Name:   Linux-4.2.0
   Image Type:   ARM Linux Multi-File Image (uncompressed)
   Data Size:    7496295 Bytes =  7.1 MB
8 T0 ?; X6 X& `( K2 k   Load Address: c0008000
" n' S3 a7 @9 d0 T8 `' h! ~5 u   Entry Point:  c0008001
/ Z2 U! X. v; i1 ^   Contents:
) }. ]; `" t- u( J7 X: G5 B: O      Image 0: 7471388 Bytes =  7.1 MB
      Image 1: 24895 Bytes = 24.3 kB
9 L; p9 P, @/ n; P+ Y   Verifying Checksum ... OK
## Flattened Device Tree from multi component Image at C0007FC0
( i6 R6 X6 z# F( I8 l/ t: {4 @1 N   Booting using the fdt at 0xc0728128
9 c5 D, c% h8 W# D   Loading Multi-File Image ... OK
2 ^+ x8 }4 J: h4 {7 i: xOK
# d1 {9 l, L9 n7 n1 A3 [  _- H  PWARNING: legacy format multi component image overwritten
5 Z7 ?; O0 O+ Z. A3 `7 X   Loading Device Tree to c3ff6000, end c3fff13e ... OK
  n: i0 ?+ l4 ^  w' Q) T
. C% l7 Y- H! GStarting kernel ...

Booting Linux on physical CPU 0x0
1 G+ L9 Y9 m2 `- X6 i/ g0 ^, q) g8 QLinux version 4.2.0 (hw@localhost.localdomain) (gcc version 4.4.1 (Sourcery G++ Lite 2010
q1-189) ) #90 Tue Dec 4 03:32:33 EST 2018
. \- {- L$ T1 E  @  b6 r6 U. yCPU: ARMv7-M [410fc271] revision 1 (ARMv7M), cr=00000000
CPU: WBA data cache, WBA instruction cache
Machine model: EmCraft Systems STM32F7-SOM board
$ b4 P/ Y' _# D$ k/ h# f& JBuilt 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: stm32_platform=stm32f7-disco console=ttyS0,115200 panic=10 ip=169.25
4.1.10:169.254.1.2:::stm32f7-disco：eth0：off
8 b' y& c5 g7 z8 v9 \# @PID hash table entries: 256 (order: -2, 1024 bytes)
+ ]) L: [& I9 ?5 X9 kDentry cache hash table entries: 8192 (order: 3, 32768 bytes)
. U3 d3 E! Y/ h" NInode-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)
" [' q4 L) q8 @Virtual kernel memory layout:
) r& v! l& ?( H, h8 Z3 [    vector  : 0x00000000 - 0x00001000   (   4 kB)
# b, @# K/ e4 q/ k+ \    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0x00000000 - 0xffffffff   (4095 MB)
    lowmem  : 0xc0000000 - 0xc4000000   (  64 MB)
      .text : 0xc0008000 - 0xc0312000   (3112 kB)
      .init : 0xc0312000 - 0xc06fa000   (4000 kB)
      .data : 0xc06fa000 - 0xc07277c0   ( 182 kB)
: {  j! C) R: J9 _       .bss : 0xc072811c - 0xc0743e84   ( 112 kB)
NR_IRQS:16 nr_irqs:16 16
) U* t7 u: u. Q/ T& x/interrupt-controller@40013c00: 24 External IRQs detected
% r2 g% v/ m6 o, P# P* L" Fclocksource: arm_system_timer: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 27651335
8 ns
$ |; \3 C4 @$ V% LARM System timer initialized as clocksource
/soc/timer@40000000: STM32 clockevent driver initialized (32 bits)
sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836475000000ns
+ N: r5 C( S" {+ X% LCalibrating delay loop... 427.62 BogoMIPS (lpj=2138112)
2 @) s6 m- O2 f3 Wpid_max: default: 4096 minimum: 301
# O) Y3 Q9 C) t% X& Q0 JMount-cache hash table entries: 1024 (order: 0, 4096 bytes)
$ _1 `$ D% _* E  [! @, I% L5 @7 kMountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
) ]$ Q: U  r+ ~1 D+ Cdevtmpfs: initialized
9 j' g% R% g3 N# Y9 \clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275
0000 ns
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
stm32-pinctrl pin-controller: nbanks = 11
- ^; P8 J8 v' t$ estm32-pinctrl pin-controller: nfunctions = 20
. ^0 }0 ]8 \: l, M+ A* Rstm32-pinctrl pin-controller: ngroups = 23
stm32-pinctrl pin-controller: GPIOA bank added.
* K0 [( d6 L( ~7 i% A4 mstm32-pinctrl pin-controller: GPIOB bank added.
4 m% |8 \  `- \3 K! Jstm32-pinctrl pin-controller: GPIOC bank added.
stm32-pinctrl pin-controller: GPIOD bank added.
; S- m" Z) m3 a0 G+ f5 H* bstm32-pinctrl pin-controller: GPIOE bank added.
2 {* u% U  [3 ?stm32-pinctrl pin-controller: GPIOF bank added.
stm32-pinctrl pin-controller: GPIOG bank added.
) A) b1 v/ @5 t! v* J" Ystm32-pinctrl pin-controller: GPIOH bank added.
stm32-pinctrl pin-controller: GPIOI bank added.
stm32-pinctrl pin-controller: GPIOJ bank added.
stm32-pinctrl pin-controller: GPIOK bank added.
stm32-pinctrl pin-controller: Function[0         name:i2c_1,    groups:1]
7 Z5 T; T# l8 ^! M9 [stm32-pinctrl pin-controller: Function[1         name:i2c_2,    groups:1]
stm32-pinctrl pin-controller: Function[2         name:i2c_3,    groups:1]
, P1 g2 e8 ]/ H2 }0 Cstm32-pinctrl pin-controller: Function[3         name:mac,      groups:2]
stm32-pinctrl pin-controller: Function[4         name:sdio,     groups:1]
' x' E0 ~( F' Y0 F9 I$ q7 z5 y* J; Nstm32-pinctrl pin-controller: Function[5         name:spi_2,    groups:1]
stm32-pinctrl pin-controller: Function[6         name:spi_4,    groups:1]
# W' o' R! }8 i1 d  |$ zstm32-pinctrl pin-controller: Function[7         name:spi_5,    groups:1]
stm32-pinctrl pin-controller: Function[8         name:usart1,   groups:1]
0 v: Y% b' F$ `. n4 h; b% nstm32-pinctrl pin-controller: Function[9         name:usart6,   groups:1]
stm32-pinctrl pin-controller: Function[10        name:usart7,   groups:1]
stm32-pinctrl pin-controller: Function[11        name:usb_fs,   groups:1]
stm32-pinctrl pin-controller: Function[12        name:usb_hs,   groups:1]
  F3 b% l' |8 H; j4 O6 ustm32-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]
. z* ~- X$ e# M+ Estm32-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]
stm32-dma 40026000.dma: STM32 DMA driver registered
stm32-dma 40026400.dma: STM32 DMA driver registered
) F0 @7 @3 A$ A% s8 ~! u8 BSCSI subsystem initialized
usbcore: registered new interface driver usbfs
+ `/ f/ R2 U8 m8 r7 Ousbcore: registered new interface driver hub
usbcore: registered new device driver usb
1 k1 L7 U! u; N9 [) Q; A4 \soc:phy_hs supply vcc not found, using dummy regulator
soc:phy_fs supply vcc not found, using dummy regulator
1 p; M/ h4 |; W5 l5 D; k4 Tpps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
PTP clock support registered
9 [8 k+ H$ \4 _- d5 B0 |( MAdvanced Linux Sound Architecture Driver Initialized.
Bluetooth: Core ver 2.20
9 M  _, y/ y% i, {7 n& H" i: t- r/ pNET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP socket layer initialized
4 ]2 S  [% E( {# a* c$ S* mBluetooth: SCO socket layer initialized
clocksource: Switched to clocksource arm_system_timer
1 h% m8 j7 w2 N; uNET: Registered protocol family 2
' V- D% g5 y  C9 \4 VTCP established hash table entries: 1024 (order: 0, 4096 bytes)
% u  j0 T2 G1 n% Z" n$ O7 @TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
9 [5 U: l) H' {- F" RTCP: Hash tables configured (established 1024 bind 1024)
$ P! I# o0 u7 u7 S; R- a$ _UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
9 j2 a- N+ [) V) X- O" p7 \) b% IRPC: Registered named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
& |% ?  t: D3 f  \6 CRPC: Registered tcp NFSv4.1 backchannel transport module.
Power Management for STM32
+ k9 o, q! T( v$ j; |( Hfutex hash table entries: 16 (order: -5, 192 bytes)
5 i5 \/ h# |4 z- r; Y. d+ f- t* Cjffs2: version 2.2. (NAND) (SUMMARY)  漏 2001-2006 Red Hat, Inc.
fuse init (API version 7.23)
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
, B9 L1 F4 h6 rio scheduler noop registered
8 t% h/ C% o2 ?0 qio scheduler cfq registered (default)
3 Z* O4 t: c0 M% V+ B! z, mstm32-pinctrl pin-controller: maps: function gpio group pwms num 2
" z! {! v( j3 ~$ [  _: ^5 ostm32-pwm pwm0: basing on TIM3.1(x16)
stm32-pinctrl pin-controller: maps: function ltdc group ltdc-0 num 29
8 y) ^6 r8 |" Gstm32_lcdfb 40016800.ltdc: fb0: fb device registered successfully
STM32 USART driver initialized
* |1 ~% |8 a& G  T$ Q4 `stm32-pinctrl pin-controller: maps: function usart1 group usart1-0 num 3
40011000.serial: ttyS0 at MMIO 0x40011000 (irq = 34, base_baud = 6750000) is a stm32-usar
+ |  _5 Z: M1 l% D( a  q/ Zt
% V# ?3 i( O/ s9 ]console [ttyS0] enabled
- J' p5 \7 r* r5 ^9 I& C9 Fstm32-pinctrl pin-controller: maps: function usart6 group usart6-0 num 3
40011400.serial: ttyS5 at MMIO 0x40011400 (irq = 35, base_baud = 6750000) is a stm32-usar
t
& n9 Q: @8 [4 L. rnbd: registered device at major 43
! X- A% X5 t0 D5 ^9 Hstm32-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
. G$ [% n6 P, p. w3 Z. K+ Estm32_dac 40007400.dac: created 1 character devices with MAJOR 248
2 ofpart partitions found on MTD device physmap-stm-flash.0
4 Q% S6 C( F* n7 m4 c. y$ nCreating 2 MTD partitions on "physmap-stm-flash.0":
0x000000000000-0x000000020000 : "stm_flash_uboot"
0x000000040000-0x000000100000 : "stm_flash_unused"
stm32-pinctrl pin-controller: maps: function spi_5 group spi_5-0 num 4
+ I! Z3 M' G' i& W" d. e% gstm32-spi 40015000.spi: SPI Controller 4 at 40015000,irq=38,hz=108000000
CAN device driver interface
" O0 h4 N% J+ i7 _# ~stm32-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
Ring mode enabled
DMA HW capability register supported
/ m) c! P2 F' i! G7 G Enhanced/Alternate descriptors
8 C4 K* c# f0 X/ S( `7 N, `        Enabled extended descriptors
RX Checksum Offload Engine supported (type 2)
TX Checksum insertion supported
* m7 i* t2 k  n/ O9 J3 V; U5 b. x Wake-Up On Lan supported
. K& g7 Z! ?* e4 c+ w: q8 v Enable RX Mitigation via HW Watchdog Timer
, ^# {4 e" L8 c) W; cstm32-dwmac 40028000.ethernet eth0: No MDIO subnode found
; |, u! E$ v, T% T- c6 V; V' ^1 Dlibphy: stmmac: probed
' ?! ?+ s5 U- ceth0: PHY ID 0007c0f1 at 0 IRQ POLL (stmmac-0:00) active
PPP generic driver version 2.4.2
! \- @+ I5 H; MPPP BSD Compression module registered
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
! m  F" a$ n' L# h6 Wdwc2 40040000.usb: DWC OTG Controller
dwc2 40040000.usb: new USB bus registered, assigned bus number 1
dwc2 40040000.usb: irq 56, io mem 0x00000000
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
, }) M1 G+ i, J3 v% ~usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: DWC OTG Controller
' J4 H1 ~# U" S+ ~3 uusb usb1: Manufacturer: Linux 4.2.0 dwc2_hsotg
8 S2 d8 q4 C& c& a# e3 Nusb usb1: SerialNumber: 40040000.usb
hub 1-0:1.0: USB hub found
5 o- Y2 |7 A# Q: f) Uhub 1-0:1.0: 1 port detected
stm32-pinctrl pin-controller: maps: function usb_fs group usb_fs-0 num 3
50000000.usb supply vusb_d not found, using dummy regulator
% P4 |- l& t2 M9 D# t, H50000000.usb supply vusb_a not found, using dummy regulator
4 r7 d  C* J8 T( j! d' zdwc2 50000000.usb: EPs: 6, dedicated fifos, 512 entries in SPRAM
& Q: t6 n; W; }3 ?1 Hdwc2 50000000.usb: DCFG=0x08200000, DCTL=0x00000002, DIEPMSK=0000000b
dwc2 50000000.usb: GAHBCFG=0x00000000, GHWCFG1=0x00000000
dwc2 50000000.usb: GRXFSIZ=0x000000a0, GNPTXFSIZ=0x004000a0
dwc2 50000000.usb: DPTx[1] FSize=32, StAddr=0x000000e0
7 ]0 J( o+ f3 a1 d: S% c* Y0 mdwc2 50000000.usb: DPTx[2] FSize=64, StAddr=0x00000100
2 e! E0 h5 m& l) n  Jdwc2 50000000.usb: DPTx[3] FSize=512, StAddr=0x00000800
4 f% t4 @- R$ n* h, qdwc2 50000000.usb: DPTx[4] FSize=512, StAddr=0x00000a00
, [0 T9 T* M0 y* J$ X" T" Gdwc2 50000000.usb: DPTx[5] FSize=512, StAddr=0x00000c00
; D( I( {; e$ l! g) i* u& vdwc2 50000000.usb: ep0-in: EPCTL=0x00008000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep0-out: EPCTL=0x00008000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep1-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep1-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
  u( }4 ?- ]) t$ i; ddwc2 50000000.usb: ep2-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep2-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
+ l6 `- c3 d! h  c3 R/ Jdwc2 50000000.usb: ep3-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
1 g) f6 k3 R6 k. ^- c( h" \. H/ odwc2 50000000.usb: ep3-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep4-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep4-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep5-in: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
dwc2 50000000.usb: ep5-out: EPCTL=0x00000000, SIZ=0x00000000, DMA=0x5abee5fb
- \2 e0 C  @$ R* jdwc2 50000000.usb: DVBUSDIS=0x000017d7, DVBUSPULSE=000005b8
usbcore: registered new interface driver cdc_acm
3 R- K" f! b- z, |! m% ecdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
* l, A9 L0 e6 |9 cusbcore: registered new interface driver uas
! u+ b/ x. T( x# U$ x0 B# cusbcore: registered new interface driver usb-storage
g_serial gadget: Gadget Serial v2.4
7 K0 Q' T. J6 N4 d: Hg_serial gadget: g_serial ready
dwc2 50000000.usb: bound driver g_serial
i2c /dev entries driver
stm32-pinctrl pin-controller: maps: function i2c_4 group i2c_4-0 num 3
bmp085 3-0077: Successfully initialized bmp085!
stm32f7-i2c 40006000.i2c: I2C Controller i2c-3 at 40006000,irq=58
, b% Z( s% o+ r& J- [% mDriver for 1-wire Dallas network protocol.
( `: Z6 h( M8 g6 musbcore: registered new interface driver btusb
stm32-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)
- b- W& K2 |' J8 {* {stm32-dma 40026400.dma: stm32_dma_of_xlate: unable to get channel 3 - was already request
9 A* ]3 Z8 u. }# C! ]2 ied
mmci-pl18x 40012c00.sdi: DMA channels RX dma1chan3, TX dma1chan3
- J8 I4 p; [" ~4 w1 d5 l3 S$ v+ Nstm32_gpio_to_irq: Event line 3 now points to fire interrupts from bank G
. P4 z1 t3 J4 b" x- ^stm32-pinctrl pin-controller: maps: function gpio group outs num 2
hidraw: raw HID events driver (C) Jiri Kosina
: x2 |  N. V# A" X2 _& Rusbcore: registered new interface driver usbhid
usbhid: USB HID core driver
4 @9 {5 _, U* @& n7 qstm32-pinctrl pin-controller: maps: function adc1_in0_pin group adc1-0 num 2
stm32f4-adc 40012000.adc: registered
stm32-pinctrl pin-controller: maps: function sai_2 group sai_2-0 num 5
( g# V8 j) Z/ B, _+ r5 Y# k7 ?6 I4 ustm32-dma 40026400.dma: stm32_dma_of_xlate: unable to get channel 4 - was already request
ed
stm32-asoc-card sound: failed to find codec platform device
stm32-asoc-card: probe of sound failed with error -22
NET: Registered protocol family 17
can: controller area network core (rev 20120528 abi 9)
NET: Registered protocol family 29
& `7 c. o  g: ^& o7 B4 i) ?$ Acan: raw protocol (rev 20120528)
can: broadcast manager protocol (rev 20120528 t)
% k& M+ B: `& [1 q; ~1 ~can: netlink gateway (rev 20130117) max_hops=1
6 A! n& x& ^* P* q; s" hBluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM socket layer initialized
: X) E% I4 p# u, cBluetooth: RFCOMM ver 1.11
! k  D- s+ M& ]4 b0 _. q- F& O% ehctosys: unable to open rtc device (rtc0)
vmmc: disabling
+ K" g7 h" w- H+ fALSA device list:
) i4 f6 g" w* e+ D+ G9 n9 Q  No soundcards found.
Freeing unused kernel memory: 4000K (c0312000 - c06fa000)
init started: BusyBox v1.24.2 (2018-11-22 20:35:58 EST)
/ # amixer: Mixer attach default error: No such file or directory
2 W9 ?5 Y4 P) ?9 `stm32-dwmac 40028000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx

7 F1 @* d3 N+ ^9 L" b8 `/ # free
8 ]! |1 C( Y6 @9 ]/ u8 X7 o             total       used       free     shared    buffers     cached
Mem:         60432       8140      52292          0          0       4792
-/+ buffers/cache:       3348      57084
/ #
$ ?1 W4 o  _+ z- x9 Q3 L% W, B" w+ F
) G4 m; u( u3 b5 T6 j
( u- H8 t2 b9 O. I; k) c' A

哇哦！