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Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 40 |
1 files changed, 10 insertions, 30 deletions
@@ -4,8 +4,6 @@ This repository, maintained by SiFive, Inc, makes it easy to get started develop ### Contents ### -* RISC-V Software Toolchain -* RISC-V Debugging Toolchain * Board Support Packages for FE310 and Development Kits * A Few Example Programs @@ -24,33 +22,15 @@ cd freedom-e-sdk make help ``` -#### Building Tools from Source #### +#### Install the RISC-V Toolchain #### -Ubuntu packages needed: +The RISC-V GNU Toolchain and OpenOCD are available from the SiFive Website at - $ sudo apt-get install autoconf automake libmpc-dev libmpfr-dev libgmp-dev gawk bison flex texinfo libtool libusb-1.0-0-dev make g++ pkg-config libexpat1-dev zlib1g-dev +https://www.sifive.com/boards -Next, build the tools: - -``` -cd freedom-e-sdk -make tools [BOARD=freedom-e300-hifive1] -``` - -If your machine has enough resources, you can speed up the build process by adding `-j n` to `make`, where `n` is the number of processors of your build system. - - -#### Using Pre-Built Binary Tools #### - -If you would like to avoid compiling the tools from source, they are -available as pre-built binaries from - -https://www.sifive.com/products/tools - -For OpenOCD and/or RISC-V GNU Toolchain, -download the .tar.gz for your platform, and unpack it to -your desired location. Then, use the `RISCV_PATH` and `RISCV_OPENOCD_PATH` -variables when attempting to use the tools: +For OpenOCD and/or RISC-V GNU Toolchain, download the .tar.gz for your platform, +and unpack it to your desired location. Then, use the `RISCV_PATH` and +`RISCV_OPENOCD_PATH` variables when attempting to use the tools: ``` cp openocd-<date>-<platform>.tar.gz /my/desired/location/ @@ -96,17 +76,17 @@ Run `make help` for more commands. After setting up the software and debug toolchains, you can build and execute everyone's favorite benchmark as follows: -- Compile the benchmark with the command `make software PROGRAM=dhrystone`. -- Run on the HiFive1 board with the command `make upload PROGRAM=dhrystone`. +- Compile the benchmark with the command `make software BOARD=freedom-e300-hifive1 PROGRAM=dhrystone LINK_TARGET=dhrystone`. Note that a slightly different linker file is used for Dhrystone which stores read only data in DTIM instead of external flash. +- Run on the HiFive1 board with the command `make upload BOARD=freedom-e300-hifive1 PROGRAM=dhrystone`. This will take a few minutes. Sample output is provided below. - Compute DMIPS by dividing the Dhrystones per Second result by 1757, which was the VAX 11/780's performance. In the example below, 729927 / 1757 = 415 DMIPS. - Compute DMIPS/MHz by dividing by the clock rate: in the example below, - 415 / 260 = 1.60 DMIPS/MHz. + 415 / 268 = 1.55 DMIPS/MHz. ``` -core freq at 259830579 Hz +core freq at 268694323 Hz Dhrystone Benchmark, Version 2.1 (Language: C) |