Instruction selection in LLVM maps the compiler intermediate representation (IR) to target instructions by matching nodes in a selection DAG. It performs this mapping greedily by choosing instructions with higher complexity that can cover more operations. The selection DAG is legalized to ensure operations are supported by the target before instruction matching using patterns defined in tablegen files.
ZynqMPのブートとパワーマネージメント : (ZynqMP Boot and Power Management)Mr. Vengineer
?
2016年2月20日(金)のZynq Ultrasclae+ MPSoC 勉強会で使った資料です。
追記) 2016.05.08
公式ARM Trusted Firmwareのサイトに、Zynq UltraScale+ MPSoCの実装が追加されていていることを明記した
This is the material I used at Zynq Ultrasclae + MPSoC SIG on 20th February (Friday).
Addendum) 2016.05.08
We stated that the implementation of Zynq UltraScale + MPSoC was added to the official ARM Trusted Firmware site.
This document discusses RISC-V boot processes using the Berkeley Boot Loader (BBL) and RISC-V Proxy Kernel (PK). It explains how upon reset, code in Machine mode initializes the system and switches to Supervisor mode. The boot loader then loads an application ELF into memory. For BBL, it loads a Linux kernel, and for PK it loads a user application. Control is then transferred to the loaded program in User mode. Trap handling mechanisms involving different privilege modes are also covered.
Using the new extended Berkley Packet Filter capabilities in Linux to the improve performance of auditing security relevant kernel events around network, file and process actions.
High-Performance Networking Using eBPF, XDP, and io_uringScyllaDB
?
Bryan McCoid discusses using eBPF, XDP, and io_uring for high performance networking. XDP allows programs to process packets in the kernel without loading modules. AF_XDP sockets use eBPF to route packets between kernel and userspace via ring buffers. McCoid is building a Rust runtime called Glommio to interface with these techniques. The runtime integrates with io_uring and allows multiple design patterns for receiving packets from AF_XDP sockets.
Instruction selection in LLVM maps the compiler intermediate representation (IR) to target instructions by matching nodes in a selection DAG. It performs this mapping greedily by choosing instructions with higher complexity that can cover more operations. The selection DAG is legalized to ensure operations are supported by the target before instruction matching using patterns defined in tablegen files.
ZynqMPのブートとパワーマネージメント : (ZynqMP Boot and Power Management)Mr. Vengineer
?
2016年2月20日(金)のZynq Ultrasclae+ MPSoC 勉強会で使った資料です。
追記) 2016.05.08
公式ARM Trusted Firmwareのサイトに、Zynq UltraScale+ MPSoCの実装が追加されていていることを明記した
This is the material I used at Zynq Ultrasclae + MPSoC SIG on 20th February (Friday).
Addendum) 2016.05.08
We stated that the implementation of Zynq UltraScale + MPSoC was added to the official ARM Trusted Firmware site.
This document discusses RISC-V boot processes using the Berkeley Boot Loader (BBL) and RISC-V Proxy Kernel (PK). It explains how upon reset, code in Machine mode initializes the system and switches to Supervisor mode. The boot loader then loads an application ELF into memory. For BBL, it loads a Linux kernel, and for PK it loads a user application. Control is then transferred to the loaded program in User mode. Trap handling mechanisms involving different privilege modes are also covered.
Using the new extended Berkley Packet Filter capabilities in Linux to the improve performance of auditing security relevant kernel events around network, file and process actions.
High-Performance Networking Using eBPF, XDP, and io_uringScyllaDB
?
Bryan McCoid discusses using eBPF, XDP, and io_uring for high performance networking. XDP allows programs to process packets in the kernel without loading modules. AF_XDP sockets use eBPF to route packets between kernel and userspace via ring buffers. McCoid is building a Rust runtime called Glommio to interface with these techniques. The runtime integrates with io_uring and allows multiple design patterns for receiving packets from AF_XDP sockets.
16. UCFの記述
● いつも通り.メモリは書かなくていいから楽
NET RS232_Uart_1_sout LOC = T7 | IOSTANDARD = LVCMOS33;
NET RS232_Uart_1_sin LOC = R7 | IOSTANDARD = LVCMOS33;
NET RESET LOC = V4 | IOSTANDARD = LVCMOS33 | TIG | PULLDOWN;
NET LEDS_TRI_O<0> LOC = P4 | IOSTANDARD = LVCMOS18;
NET LEDS_TRI_O<1> LOC = L6 | IOSTANDARD = LVCMOS18;
NET LEDS_TRI_O<2> LOC = F5 | IOSTANDARD = LVCMOS18;
NET LEDS_TRI_O<3> LOC = C2 | IOSTANDARD = LVCMOS18;
NET DIP_Switches_TRI_I<0> LOC = B3 | IOSTANDARD = LVCMOS33;
NET DIP_Switches_TRI_I<1> LOC = A3 | IOSTANDARD = LVCMOS33;
NET DIP_Switches_TRI_I<2> LOC = B4 | IOSTANDARD = LVCMOS33;
NET DIP_Switches_TRI_I<3> LOC = A4 | IOSTANDARD = LVCMOS33;
NET clock_generator_0_CLKIN_pin LOC = K15 | IOSTANDARD = LVCMOS33;
NET QSPI_FLASH_SCK_pin LOC = R15 | IOSTANDARD = LVCMOS33;
NET QSPI_FLASH_SS_pin LOC = V3 | IOSTANDARD = LVCMOS33;
NET QSPI_FLASH_IO0_pin LOC = T13 | IOSTANDARD = LVCMOS33;
NET QSPI_FLASH_IO1_pin LOC = R13 | IOSTANDARD = LVCMOS33;
NET QSPI_FLASH_HOLD LOC = V14 | IOSTANDARD = LVCMOS33;
NET "clock_generator_0_CLKIN_pin" TNM_NET = clock_generator_0_CLKIN_pin;
TIMESPEC TS_clock_generator_0_CLKIN_pin = PERIOD clock_generator_0_CLKIN_pin 66666 kHz;
### Set Vccaux for S6LX9 MicroBoard to 3.3V ###
CONFIG VCCAUX = "3.3" ;