LDR6020 PD协议芯片
完整的介绍了ARM7的指令集，也可以作为后续架构如ARM11、A5、A8、A9等全系列ARM内核的CPU的参考资料，自己整理了书签，方便阅读，在此贡献出来
编译器利用pc指针和ldr生成PIC演示
该资料在我们初学ARM汇编或是arm平台软件的逆向分析都很有帮助，遇到不懂得指令查一下就明白了，非常好的工具类资料，分享给大家。
苹果20W快充方案
乐得瑞（LDR），LDR6023
USB PD 3.0 ◇ 双 TYPE-C 接口都支持 DRP
Linux Device Driver (3edtion)原版 1. An Introduction to Device Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 The Role of the Device Driver 2 Splitting the Kernel 4 Classes of Devices and Modules 5 Security Issues 8 Version Numbering 10 License Terms 11 Joining the Kernel Development Community 12 Overview of the Book 12 2. Building and Running Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Setting Up Your Test System 15 The Hello World Module 16 Kernel Modules Versus Applications 18 Compiling and Loading 22 The Kernel Symbol Table 28 Preliminaries 30 Initialization and Shutdown 31 Module Parameters 35 Doing It in User Space 37 Quick Reference 39 3. Char Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 The Design of scull 42 Major and Minor Numbers 43 Some Important Data Structures 49 ,ldr3TOC.fm.4587 Page v Thursday, January 20, 2005 9:30 AMvi | Table of Contents Char Device Registration 55 open and release 58 scull’s Memory Usage 60 read and write 63 Playing with the New Devices 70 Quick Reference 70 4. Debugging Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Debugging Support in the Kernel 73 Debugging by Printing 75 Debugging by Querying 82 Debugging by Watching 91 Debugging System Faults 93 Debuggers and Related Tools 99 5. Concurrency and Race Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Pitfalls in scull 107 Concurrency and Its Management 107 Semaphores and Mutexes 109 Completions 114 Spinlocks 116 Locking Traps 121 Alternatives to Locking 123 Quick Reference 130 6. Advanced Char Driver Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 ioctl 135 Blocking I/O 147 poll and select 163 Asynchronous Notification 169 Seeking a Device 171 Access Control on a Device File 173 Quick Reference 179 7. Time, Delays, and Deferred Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 Measuring Time Lapses 183 Knowing the Current Time 188 Delaying Execution 190 Kernel Timers 196 Tasklets 202 ,ldr3TOC.fm.4587 Page vi Thursday, January 20, 2005 9:30 AMTable of Contents | vii Workqueues 205 Quick Reference 208 8. Allocating Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 The Real Story of kmalloc 213 Lookaside Caches 217 get_free_page and Friends 221 vmalloc and Friends 224 Per-CPU Variables 228 Obtaining Large Buffers 230 Quick Reference 231 9. Communicating with Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 I/O Ports and I/O Memory 235 Using I/O Ports 239 An I/O Port Example 245 Using I/O Memory 248 Quick Reference 255 10. Interrupt Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258 Preparing the Parallel Port 259 Installing an Interrupt Handler 259 Implementing a Handler 269 Top and Bottom Halves 275 Interrupt Sharing 278 Interrupt-Driven I/O 281 Quick Reference 286 11. Data Types in the Kernel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Use of Standard C Types 288 Assigning an Explicit Size to Data Items 290 Interface-Specific Types 291 Other Portability Issues 292 Linked Lists 295 Quick Reference 299 12. PCI Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 The PCI Interface 302 A Look Back: ISA 319 PC/104 and PC/104+ 322 ,ldr3TOC.fm.4587 Page vii Thursday, January 20, 2005 9:30 AMviii | Table of Contents Other PC Buses 322 SBus 323 NuBus 324 External Buses 325 Quick Reference 325 13. USB Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327 USB Device Basics 328 USB and Sysfs 333 USB Urbs 335 Writing a USB Driver 346 USB Transfers Without Urbs 356 Quick Reference 360 14. The Linux Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362 Kobjects, Ksets, and Subsystems 364 Low-Level Sysfs Operations 371 Hotplug Event Generation 375 Buses, Devices, and Drivers 377 Classes 387 Putting It All Together 391 Hotplug 397 Dealing with Firmware 405 Quick Reference 407 15. Memory Mapping and DMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412 Memory Management in Linux 412 The mmap Device Operation 422 Performing Direct I/O 435 Direct Memory Access 440 Quick Reference 459 16. Block Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464 Registration 465 The Block Device Operations 471 Request Processing 474 Some Other Details 491 Quick Reference 494 ,ldr3TOC.fm.4587 Page viii Thursday, January 20, 2005 9:30 AMTable of Contents | ix 17. Network Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 497 How snull Is Designed 498 Connecting to the Kernel 502 The net_device Structure in Detail 506 Opening and Closing 515 Packet Transmission 516 Packet Reception 521 The Interrupt Handler 523 Receive Interrupt Mitigation 525 Changes in Link State 528 The Socket Buffers 528 MAC Address Resolution 532 Custom ioctl Commands 535 Statistical Information 536 Multicast 537 A Few Other Details 540 Quick Reference 542 18. TTY Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 546 A Small TTY Driver 548 tty_driver Function Pointers 553 TTY Line Settings 560 ioctls 564 proc and sysfs Handling of TTY Devices 566 The tty_driver Structure in Detail 567 The tty_operations Structure in Detail 569 The tty_struct Structure in Detail 571 Quick Reference 573 Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 575 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 579
协议芯片
LDR6032 Spec EN V1.5.pdf
目录 u-boot-1.1.6 之 cpu/arm920t/start.s分析 ........................................................................................... 2 u-boot 中.lds连接脚本文件的分析 ...................................................................................................12 分享一篇我总结的 uboot 学习笔记（转） .....................................................................................15 U-BOOT内存布局及启动过程浅析 ...................................................................................................22 u-boot 中的命令实现 .......................................................................................................................... 25 U-BOOT环境变量实现 ........................................................................................................................28 1.相关文件 ....................................................................................................................................28 2.数据结构 ....................................................................................................................................28 3.ENV 的初始化...........................................................................................................................30 3.1env_init ............................................................................................................................30 3.2 env_relocate ...................................................................................................................30 3.3*env_relocate_spec ........................................................................................................31 4. ENV 的保存 ..............................................................................................................................31 U-Boot 环境变量 ..........................................................................................................................32 u-boot 代码链接的问题 ......................................................................................................................35 ldr 和 adr 在使用标号表达式作为操作数的区别 ............................................................................40 start_armboot 浅析 ..............................................................................................................................42 1.全局数据结构的初始化 ..........................................................................................................42 2.调用通用初始化函数...............................................................................................................43 3.初始化具体设备 .......................................................................................................................44 4.初始化环境变量 .......................................................................................................................44 5.进入主循环 ...............................................................................................................................44 u-boot 编译过程 ...................................................................................................................................44 mkconfig文件的分析 .......................................................................................................................... 47 从 NAND闪存中启动 U-BOOT的设计 ..............................................................................................50 引言 ...............................................................................................................................................50 NAND闪存工作原理 ................................................................................................................... 51 从 NAND闪存启动 U-BOOT的设计思路.................................................................................. 51 具体设计 ....................................................................................................................................... 51 支持 NAND闪存的启动程序设计 ..................................................................................... 51 支持 U-BOOT命令设计 ...................................................................................................... 52 结语 ............................................................................................................................................... 53 参考文献 ....................................................................................................................................... 53 U-boot 给 kernel 传参数和 kernel 读取参数—struct tag (以及补充) ............................................ 53 1 、u-boot 给 kernel 传 RAM 参数 ........................................................................................54 2 、Kernel 读取 U-boot 传递的相关参数 .............................................................................56 3 、关于 U-boot 中的 bd 和 gd...............................................................................................59 U-BOOT源码分析及移植 ....................................................................................................................60 一、 u-boot 工程的总体结构： ..................................................................................................61 1、源代码组织 ....................................................................................................................61 2.makefile简要分析 ............................................................................................................61 3、u-boot 的通用目录是怎么做到与平台无关的？......................................................63 4、smkd2410 其余重要的文件 ： ...................................................................................63 二、u-boot 的流程、主要的数据结构、内存分配 ................................................................64 1、u-boot 的启动流程： ...................................................................................................64 2、u-boot 主要的数据结构 ...............................................................................................66 3、u-boot 重定位后的内存分布： ...................................................................................68 三、u-boot 的重要细节 。 ........................................................................................................68 关于 U-boot 中命令相关的编程 ： ................................................................................. 73 四、U-boot 在 ST2410 的移植，基于 NOR FLASH和 NAND FLASH启动。......................... 76 1、从 smdk2410 到 ST2410: .............................................................................................. 76 2、移植过程： .................................................................................................................... 76 3、移植要考虑的问题： ...................................................................................................77 4、SST39VF1601: .................................................................................................................77 5、我实现的 flash.c主要部分： ...................................................................................... 78 6、增加从 Nand 启动的代码 ： ..................................................................................... 82 7、添加网络命令。 ............................................................................................................ 87
移动电源充电方案
LDR6321max Spec CH V1.1.pdf
LDR6023C SSOP16 是乐得瑞科技针对 USB Type-C 标准中的 Bridge 设备而开发的双 USB-C DRP 接口 USB PD 通信芯片。具备 Power Negotiation 数据包透传功能，切换 Data Role 功能，以及通 过 VDM 协商让智能设备进入 ALT MODE 的功能,并针对各大手机品牌的 USB-C 兼容性进行了特别优 化，适合于手机音频转接器应用场景。LDR6023C 还可以兼容模拟 USB TYPE-C 耳机的识别。
乐得瑞（LDR），LDR6025
冲用ARM指令集及汇编，需要的看看！写的挺全。高清版的！
LDR6023M Spec CH V2.7.pdf显示器控制芯片
原作者：宛城布衣。 本文件已移除PDF签名，如内容有误，欢迎大家指正。 目录 前言 i 目录 I ARM7TDMI(-S)指令集及汇编1 ARM 处理器寻址方式2 寄存器寻址2 立即寻址2 寄存器偏移寻址2 寄存器间接寻址3 基址寻址3 多寄存器寻址4 堆栈寻址4 块拷贝寻址5 相对寻址5 指令集介绍7 ARM 指令集7 指令格式7 第 2 个操作数7 ＃immed_8r 7 Rm8 Rm,shift8 条件码9 ARM 存储器访问指令 11 LDR 和 STR 11 LDM 和 STM14 SWP 17 ARM 数据处理指令19 数据传送指令20 MOV 20 MVN 20 算术逻辑运算指令20 ADD 20 SUB21 RSB 21 ADC 21 SBC 21 RSC 22 AND 22 ORR22 EOR22 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII BIC 23 第 I 页常用 ARM 指令集及汇编 Ver：1010 比较指令23 CMP 23 CMN23 TST24 TEQ24 乘法指令25 MUL25 MLA25 UMULL25 UMLAL26 SMULL 26 SMLAL 26 ARM 跳转指令27 B27 BL27 BX 27 ARM 协处理器指令28 CDP28 LDC29 STC 29 MCR30 MRC30 ARM 杂项指令31 SWI 31 MRS 32 MSR 33 ARM 伪指令34 ADR 35 ADRL35 LDR36 NOP37 Thumb 指令集39 Thumb 指令集与 ARM 指令集的区别 39 Thumb 存储器访问指令 40 LDR 和 STR 41 PUSH 和 POP 43 LDMIA 和 STMIA 43 Thumb 数据处理指令 45 数据传送指令46 MOV 46 MVN 46 NEG47 算术逻辑运算指令47 ADD 47 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII 第 II 页常用 ARM 指令集及汇编 Ver：1010 SUB48 ADC 49 SBC 49 MUL50 AND 50 ORR50 EOR51 BIC 51 ASR51 LSL52 LSR 52 ROR53 比较指令53 CMP 53 CMN54 TST54 Thumb 跳转指令 55 B 55 BL55 BX 55 Thumb 杂项指令 56 SWI 56 Thumb 伪指令 57 ADR 57 LDR57 NOP58 伪指令59 符号定义伪指令59 GBLA、GBLL、GBLS 59 LCLA、LCLL、LCLS60 SETA、SETL、SETS 61 RLIST61 CN 62 CP62 DN、SN62 FN63 数据定义伪指令63 LTORG64 MAP64 FIELD 65 SPACE66 DCB 66 DCD 和 DCDU67 DCDO 67 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII 第 III 页常用 ARM 指令集及汇编 Ver：1010 DCFD 和 DCFDU68 DCFS 和 DCFSU68 DCI69 DCQ 和 DCQU69 DCW 和 DCWU 70 报告伪指令70 ASSERT 70 INFO 71 OPT 71 TTL 和 SUBT 72 汇编控制伪指令73 IF、ELSE 和 ENDIF73 MACRO 和 MEND 74 WHIL 和 WEND 75 杂项伪指令76 ALIGN 77 AREA78 CODE16 和 CODE32 79 END 80 ENTRY80 EQU 81 EXPORT 和 GLOBAL 81 IMPORT 和 EXTERN 82 GET 和 INCLUDE 83 INCBIN83 KEEP83 NOFP 84 REQUIRE 84 PEQUIRE8 和 PRESERVE8 84 RN 84 ROUT85 ARM 伪指令86 ADR 86 ADRL86 LDR86
