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2017-11-21The E31 and E51 have 16KiB of RAMDrew Barbier
2017-11-21coreplexip dhrystone updatesDrew Barbier
2017-11-21Merge pull request #79 from sifive/small-putsPalmer Dabbelt
Implement a smaller puts
2017-11-21Implement a smaller putsPalmer Dabbelt
The e31's init.c calls puts intsead of printf, which oddly enough is a lot bigger: since we wrap printf, puts pulls in a lot of newlib. This adds a wrapped puts so it's very small.
2017-11-20dhrystone score to reflect current resultDrew Barbier
2017-11-20Update dhrystone sectionDrew Barbier
2017-11-17Merge pull request #78 from sifive/dhrystonePalmer Dabbelt
Speed up Dhrystone on the HiFive1
2017-11-17Speed up Dhrystone on the HiFive1Palmer Dabbelt
There's a handful of things that went wrong here: * The read-only data sections were mapped to flash, which is very slow. I just put them in the data segment, so they end up in the scratchpad. This is about a 10x hit, so it's really important. * The toolchain was an old version, which didn't have a fast memcpy implementation on 32-bit systems. This is about a 2x hit. * Some compiler flags were incorrect, including * -Os instead of -O3 * Missing -mexplicit-relocs * Missing -DNOENUM * Missing -falign-functions=4 I haven't checked how much those hurt With this, I get $ make software BOARD=freedom-e300-hifive1 PROGRAM=dhrystone LINK_TARGET=dhrystone $ make upload BOARD=freedom-e300-hifive1 PROGRAM=dhrystone LINK_TARGET=dhrystone Execution starts, 10000000 runs through Dhrystone Execution ends Final values of the variables used in the benchmark: Int_Glob: 5 should be: 5 Bool_Glob: 1 should be: 1 Ch_1_Glob: A should be: A Ch_2_Glob: B should be: B Arr_1_Glob[8]: 7 should be: 7 Arr_2_Glob[8][7]: 10000010 should be: Number_Of_Runs + 10 Ptr_Glob-> Ptr_Comp: -2147470264 should be: (implementation-dependent) Discr: 0 should be: 0 Enum_Comp: 2 should be: 2 Int_Comp: 17 should be: 17 Str_Comp: DHRYSTONE PROGRAM, SOME STRING should be: DHRYSTONE PROGRAM, SOME STRING Next_Ptr_Glob-> Ptr_Comp: -2147470264 should be: (implementation-dependent), same as above Discr: 0 should be: 0 Enum_Comp: 1 should be: 1 Int_Comp: 18 should be: 18 Str_Comp: DHRYSTONE PROGRAM, SOME STRING should be: DHRYSTONE PROGRAM, SOME STRING Int_1_Loc: 5 should be: 5 Int_2_Loc: 13 should be: 13 Int_3_Loc: 7 should be: 7 Enum_Loc: 1 should be: 1 Str_1_Loc: DHRYSTONE PROGRAM, 1'ST STRING should be: DHRYSTONE PROGRAM, 1'ST STRING Str_2_Loc: DHRYSTONE PROGRAM, 2'ND STRING should be: DHRYSTONE PROGRAM, 2'ND STRING Microseconds for one run through Dhrystone: 1.3 Dhrystones per Second: 714285.6 which is 1.55 DMIPS/MHz at 262 MHz. It's still a bit slower than our current stuff, but I don't remember what was actually in the HiFive1 so I'm not sure what we should be getting. I verified the clock is accurate with a stopwatch. I haven't bothered to go look through the binary, but I think we're about 10 cycles off so it should be managable.
2017-10-06Merge pull request #67 from dgrubb/Makefile-tweaksMegan Wachs
Update Makefile with more user-friendly clean options
2017-09-22Fix typo in help (#75)pbing
2017-09-22Fix name resolving issue (#74)pbing
2017-09-22Fix `RISC_PATH` -> `RISCV_PATH` in README (#72)Frank
2017-08-22Update to the August 18th OpenOCD and toolchain releasesPalmer Dabbelt
2017-08-15Merge branch 'master' of github.com:sifive/freedom-e-sdkGleb Gagarin
2017-08-15blacklisted watchdog program for coreplexip-e51-arty boardGleb Gagarin
2017-08-15updated OpenOCD versionGleb Gagarin
2017-08-10Merge pull request #70 from sifive/ecalldbarbi1
added ecall to vectored irq example
2017-08-10added ecall to vectored irq exampleDrew Barbier
2017-08-07HiFive1 AON Watchdog exampleDrew Barbier
2017-07-27Merge pull request #69 from sifive/vectordbarbi1
Vector
2017-07-26changed synch trap entry to match other vectorsDrew Barbier
2017-07-26removed save/restore of x18Drew Barbier
2017-07-26E31 vectored_interrupt.c as a linked fileDrew Barbier
2017-07-26only save/restore caller registers on trap entryDrew Barbier
2017-07-26only save/restore "caller" registers on trap entryDrew Barbier
2017-07-26removed bin file commited by accidentDrew Barbier
2017-07-26fixed commentsDrew Barbier
2017-07-26fixed TRAP_EXIT macro. TRAP_ENTRY/EXIT2 only saves/restores calleeDrew Barbier
registers
2017-07-26E31 FS ProjectDrew Barbier
2017-07-25too many .aling 2'sDrew Barbier
2017-07-25FS debug launch fileDrew Barbier
2017-07-25added vectored interrupt exampleDrew Barbier
2017-06-26Update Makefile with more user-friendly clean optionsdgrubb
1) Change target 'clean' to refer to 'software_clean' rather than 'toolchain-clean' and 'openocd-clean'. 2) Update Makefile help to reflect changes.
2017-06-15removed language filesDrew Barbier
2017-06-15E31 linker script updateDrew Barbier
2017-06-15E51 linker script updatesDrew Barbier
2017-06-15linker file updateDrew Barbier
2017-06-14Update openocd to v20170612Palmer Dabbelt
2017-06-14Merge pull request #64 from sifive/multicore-scratchpadPalmer Dabbelt
Add support for multicore systems and scratchpad-only systems
2017-06-14led_fade doesn't build on the e300-artyPalmer Dabbelt
2017-06-14Add a SMP examplePalmer Dabbelt
This just prints "hello world" on two cores. It contains an example of how to initialize a multi-core system using IPIs, and a simple spin lock.
2017-06-14Ignore some generated binariesPalmer Dabbelt
2017-06-14Call puts instead of printf when printing constantsPalmer Dabbelt
printf doesn't fit in the scratchpad, but since there's really no reason to call it on constant strings it can be replaced with puts. With this change, the "hello" example fits in the scratchpad.
2017-06-14Add linker scripts that target the scratchpadPalmer Dabbelt
Everything still defaults to the flash, but users can optionally select the scratchpad. Note that you have to be pretty careful about your scratchpad programs, most of them won't fit. For example, printf is too big to fit in the scratchpad.
2017-06-14New Freedom Studio Examples (#66)Megan Wachs
* examples ported to ilg build plugin * project cleanup * CoreplexIP-E31 ilg projects * E51FPGA ilg projects * Tested Debug * debug launch files * E31 Debug Launch Files * removed typo project * E51 launch files. Forgotten E31 File * Missing coreplexip files * examples ported to ilg build plugin * project cleanup * CoreplexIP-E31 ilg projects * E51FPGA ilg projects * Tested Debug * debug launch files * E31 Debug Launch Files * removed typo project * E51 launch files. Forgotten E31 File * Missing coreplexip files * starting fresh * HiFive1 demo_gpio and libwrap * hifive1 hello * debug launchers for hello and demo_gpio * hifive1 led_fade * led_fade: Since E300 Arty Dev Kit doesn't have a PRCI, the led_fade demo doesn't really work on it. * update include paths to ease generating stand-alone zips * Adding E51 Examples * E51 demo launch files * E31 Demos * E31 demo launch files
2017-06-13Merge pull request #65 from sifive/led_fade_debugPalmer Dabbelt
Allow led_fade debug
2017-06-13led_fade: make sure the HFROSC is running before you try to use it.mwachs5
2017-06-13Merge pull request #62 from edwardcwang/masterPalmer Dabbelt
Dead script
2017-06-10Allow users to override the GDB portPalmer Dabbelt
2017-06-10Just lump all the RAM sections togetherPalmer Dabbelt
Since our loader doesn't support multiple sections anyway, there's really no reason to have all these sections floating around. They're causing trouble due to misalignment so it's easiest to just group them together so we can properly enforce alignment.
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