arm64(aarch64)的内核当前并不提供自解压功能,因此需要解压在boot loader里完成(比如gzip格式)。如果boot loader不支持解压,可以使用不压缩的镜像来启动。 4、启动内核镜像 解压后的内核镜像包含64byte的头,头结构定义如下: 1 2 3 4 5 6 7 8 9 10 u32 code0; /* Executable code */ u32 code1; /* ...
ID_AA64PFR0_EL1,AArch64 Processor Feature Register 0,该寄存器描述了PE实现的feature。GIC bits [27:24]描述了该PE是否实现了system register来访问GIC,如果没有(GIC bits 等于0)那么就略过GIC V3的设定。ICC_SRE_EL2,Interrupt Controller System Register Enable register (EL2),该寄存器用来(在EL2状态时...
With this renaming, existing projects that use old port, should migrate to renamed port as follows: * `ARM_CA53_64_BIT` -> `Arm_AARCH64` * `ARM_CA53_64_BIT_SRE` -> `Arm_AARCH64_SRE` Signed-off-by: Devaraj Ranganna <devaraj.ranganna@arm.com> Co-authored-by: Gaurav-A...
1.1 链接脚本arch/arm64/kernel/vmlinux.lds.S 这里只列举与内存初始化相关的定义,其它的采用“...”省略。 ... OUTPUT_ARCH(aarch64)'指定一个特定的输出机器架构为aarch64' ENTRY(_text)'设置入口地址,实现在arch/arm64/kernel/head.S' ... SECTIONS { ... '在5.8内核版本发现TEXT_OFFSET没...
Description The Cortex-A53 ports are generic and can be used as a starting point for other Armv8-A application processors. Therefore, rename ARM_CA53_64_BIT to Arm_AARCH64 and ARM_CA53_64_BIT_SRE to Arm_AARCH64_SRE. With this renaming, existing projects
AArch32 System register DACR bits [31:0] are architecturally mapped to AArch64 System register DACR32_EL2[31:0]. This register is present only when AArch32 is supported at any Exception level. Otherwise, direct accesses to DACR are UNDEFINED. This register has no function when TTBCR.EAE...
TTBCR.EAE == 0b1: 64-bit format is used. When EL3 is using AArch32, write access to TTBR0(S) is disabled when the CP15SDISABLE signal is asserted HIGH. Used in conjunction with the TTBCR. When the 64-bit TTBR0 format is used, cacheability and shareability information is held ...
AArch32使用PL，来确定VA转PA的权限控制。而PL和PE模式的映射关系，如下表所示：也就是：在non-secure...
... For example, when issuing a Translation Lookaside Buffer (TLB) invalidation ... Moving between Security statesShow all results in this document Guide Version: 1.3 - New Last Thursday Learn the architecture - AArch64 Exception Model Home|Architectures|Learn the architecture This guide ...
关键词:CPU性能优化 --- 1.负boss责支持AARCH64服务器Web服务的性能优化,解决客户对性能和功能的需求,尤其是性能优化问题; 2.根据行业应用需求开发Web相关支撑软件栈, 包括性能监控和优化软件等; 3.收集和理解客户需求,持续支持Web软件栈维护和优化; 任职要求: 1. 本科及以上学历,3年以上后端开发经验; 2. ...