Wayne Lin

Background

About Wayne Lin

Linux kernel - tuning, profiling, porting and debugging. a. Familiar with Open source Linux project b. Perf/oprofile/lttng performance tuning, sar tuning c. T32/OPENOCD/GDB debugging - Writing cmm script, debug kernel/user space. d. Uboot loader porting and tuning e. File system: UBIFS/SUASHFS/JFFS2/YAFFS2 debug and integration f. SMP(Multi-core)- Implement related SMP mechanism boot and drivers.(From low level loader to Linux flow design.) g. Dual OS design - One core is RTOS, another is Linux. Communicate by shared memory IPC. h. Fast boot - Booting to shell under 1 sec. i. Suspend To RAM overall system design.(RAM enter self-refresh mode, and system power-off.) j. CMA and memory hotplug for media framework application k. CVE security report check and patch integration. Linux device drivers a. Bus driver: SPI/I2C/GPIO/IRQ/SD/Nand b. Functional drivers: Battery gauge/charging/Power saving (Suspend-To-RAM)/runtime PM c. Peripheral drivers: Wifi/Display/3G,4G dongle/UART d. Video driver: Deinterlace driver: Non-blocking driver (Linked-list, multi-thread/irq handling.) e. Synopsys DWC PCIe host controller driver and PCIe device driver for RC/Multiple EP application/driver porting.(BAR config, ATU config and access EP resource through PCIe address domain.etc) 3. ARM/MIPS SOC development a. Cortex A53 (ARMv8): GIC/aarch32/aarch64/generic timer/neon optimization b. Cortex A73 (ARMv8): GIC/aarch32/aarch64/generic timer/neon optimization c. Cortex A9 (ARMv7): Global timer, GIC, L2 outer cache tuning d. Cortex A7 (ARMv7): Global timer, GIC, L2 outer cache tuning d. MIPS24kec e. FPGA verification/debug f. Familiar with TI OMAP/MediaTek/Qualcomm/Freescale platform. g. glibc/uclibc toolchain compile and apply the glibc patch(including of CVE report) 4. Open source a. Software stack planning.(Integration and application) b. Android for Tablet/Embedded Linux for IOT c. OpenAMP IPC framework application. Security related (ARM trust zone) a. OPTEE kernel porting and debug (ARM64/ARM32) b. Plan for SMC call to switch Ree and Tee c. OPTEE driver porting and security boot flow planning d. Familiar with monitor mode dispatch smc event. Android HAL and AIDL/Framework 7. Other a. Makefile/GIT/Python/Bash shell/PHP/HTML/BitBucket b. BSP/Driver team leader (plan and develop organization)