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109 Creating a branche for release candidate 1.0. rfajardo 3292d 23h /minsoc/branches/rc-1.0/sw/
80 Establishing a better Makefile system for firmwares. rfajardo 3361d 08h /minsoc/trunk/sw/
74 or1200.h includes a CLABLE macro which uses __USER_LABEL_PREFIX__(from compiler defined macro) to find out if we need the underscore as prefix to reference C functions (its assembly labels) or not.

except.S and reset.S use CLABLE to call externally defined C functions.

This should avoid problems compiling firmware with old or new toolchain.

support/common.mk updated, reset-nocache.o and reset-icdc.o are dependent on or1200.h
rfajardo 3462d 00h /minsoc/trunk/sw/
69 backend update:
-minsoc_bench_defines.v
-gcc-opt.mk
Both files should now be under minsoc/backend to proper system functionality.
backend subdirectories have been given those files. Configure script updated accordingly.

They are searched there from system scripts and Makefiles.
-sim/bin/minsoc_verilog_files.txt has the files for Icarus Verilog, minsoc_bench_defines.v is now referenced from backend directory.
-sw/support/Makefile.inc now references to gcc-opt.mk inside backend.

backend/spartan3e_starter_kit_eth:
-It is the system configuration for Spartan 3E Starter Kit with Ethernet.
rfajardo 3467d 01h /minsoc/trunk/sw/
65 Files missing in the last commit.
backend/std/configure
sw: eth, uart and driver Makefiles
rfajardo 3469d 06h /minsoc/trunk/sw/
64 firmware makefiles:
-every firmware makefile has now complete dependency. This also includes dependency on files under minsoc/backend (target specific files). That means, that if some target specific header changes, the support library dependent on it will be compiled. That will always happen, even if you compile the uart firmware. In other words, if you want to use uart firmware, you can always simply compile uart by issuing make all. If anything has changed, backend files, support library, drivers, it will update everything for you.
-TODO: dependency can be automatic created by using make together with gcc. Use it instead of declaring all dependencies manually.

Makefile system for synthesis:
-the dependency for every implementation step has been checked and is working fine.
-Makefile plus support files have been moved to minsoc/syn/src
-make usage is still under syn through files generated by backend bashscripts
Backend:
-files under backend are target specific files used for the system to work
-firmware compilation
-system simulation
-system implementation
-This directory is populated by visiting one of its subdirectories and typing ./configure

backend/spartan3a_dsp_kit:
-working on FPGA

backend/spartan3e_starter_kit:
-has to be tested

backend/ml509:
-missing files have to be copied and adapted, configure script has to be copied and adapted

backend/std:
-include files necessary for firmware compilation and system configuration
-it does not include files for synthesis and is not synthesizable
rfajardo 3469d 08h /minsoc/trunk/sw/
61 Removing supposely defined external function, which don't exist anymore. rfajardo 3473d 09h /minsoc/trunk/sw/
55 Adjusting Makefiles to compile correctly with new firmware updates.

1) except.o not included into libsupport.a.
2) libsupport.a linked to except.o, now in correct order: ld libsupport.a except.o -o executable (not the other way around)
3) int.c was not being compiled because of a #ifdef which is not set anywhere
rfajardo 3482d 05h /minsoc/trunk/sw/
54 Moving spr_defs.h to or1200.h ConX. 3482d 06h /minsoc/trunk/sw/
53 Indentation, deleting redundant files and adding externals ConX. 3482d 08h /minsoc/trunk/sw/
51 sw/support/uart.c: Changing the order of writes to the Divisor Latch of UART. (Thanks Ramkumar) rfajardo 3497d 10h /minsoc/trunk/sw/
50 Removing unused firmware files, respective to or1ksim actually.

Removing the inclusion of the removed file mc.h in reset.S, probably required by or1ksim at some point.

Reworked except.S to use a macro instead of repeating the same procedure 16 times or so. Explanation added to the macro as a leading comment.
rfajardo 3509d 07h /minsoc/trunk/sw/
47 Firmware updated to work with gcc-4.5. It is actually working just fine and gcc-4.5 assembly code seems a lot cleaner.

I noticed that by increasing the free stack space for the interrupt handler by 130 made the resulting firmware not work. I assume it is because 130 is not aligned 130%4 = 2 and the stack simply does not work then. Instead I'm freeing the previous 116 plus 128 (for 32 registers as mentioned by Jeremy) and it works.
rfajardo 3512d 04h /minsoc/trunk/sw/
39 FAQ:
-Adv_jtag_bridge self test fails?
-included now SoC flow mistakes
-forgetting to upload the bitfile
-leaving clock unconnected
-older information is now under "Known Issues" right below of SoC flow mistakes

Software:
-eth: included eth.h is from drivers and not from this directory. eth.h from this directory is old and has been removed.
-uart: included uart.h is from drivers and not from this directory. uart.h from this directory is old and has been removed.
rfajardo 3588d 20h /minsoc/trunk/sw/
38 Small update to HOWTO: advices now to also include the ucf (pinout) file, for forgetful people :-).

FAQ: Added another option (hint) as a solution for people with on-board Xilinx USB cables, which do not reset.

uart.c: now uses the IRQ line definition instead of the line number directly.
rfajardo 3623d 19h /minsoc/trunk/sw/
37 README.txt added, describing the installation and set-up processes. Also describing to use the FAQ or forum when you have problems and finally to read minsoc.pdf (the documentation) to understand the system after everything works, to know what to do next.

Clean-up of sw/utils, removing unused sources and files.

Update of sw/drivers/eth.c, direct casting to avoid compile warnings.

FAQ extended and with more links to the threads giving the solutions.

Synthesis examples inform that the firmware tweak for Spartan3E Starter Kit using Ethernet only works for system version up to 35.

minsoc.pdf and webpage now uses FPGA generic and specific codes instead of FPGA independent and dependent codes, because it suits it better.
rfajardo 3654d 06h /minsoc/trunk/sw/
36 utils: -adding a 32 to 8 bit Wishbone bridge to connect 8 bit modules to the MinSoC interconnect.
-adding a Linux driver for parallel cables for the adv_jtag_bridge. It circumvents the necessity of privilege to run adv_jtag_bridge with cables xpc3 and xess.

sw/support: support library has been made completely standalone. That means, it is now independent from uClib and/or newlib. Thanks to Wojciech A. Koszek for his contribution on this.

sw/drivers: a driver library has been included, which supply drivers for the OpenRISC timer; and for UART, Ethernet, I2C, and CAN modules from OpenCores.

sw/uart and sw/eth: they don't provide code to control the UART and Ethernet controllers anymore. They use the drivers library instead.

Documentation:
-FAQ extended:
-table of contents
-explanation of how to use the 32 to 8 bit Wishbone bridge
-how to make adv_jtag_bridge work without privilege requirement for xess or xpc3
-explanation of locking problem of xpc_usb cable
-explanation of what to do if the cable is built on-board
-INSTALL:
-patching of gdb only required if version is 6.8, explanation on FAQ now.
-HOWTO:
-instruct to compile drivers library
-remove line numbers information on what to edit, better leave it to be found only by the informed context.
-adv_jtag_bridge execution now without 'sudo'. Note included that 'sudo' is required for Linux and xess or xpc3. Reference to FAQ to avoid this requirement.
rfajardo 3655d 02h /minsoc/trunk/sw/
11 External interrupt processing was being run multiple times because:
-external level interrupts have to be cleared
-internal interrupt status register has to be cleared
Since internal interrupt status register was being cleared before external level interrupts clearance, these internal interrupt status was being overwritten inbetween.

Solution:
-move status register reset to end of interrupt handler instead of beginning.

Testbench signal uart_srx initialized now.
rfajardo 4026d 04h /minsoc/trunk/sw/
2 First commit of project. Beta status:
-testbench: working
-firmware: working
-RTL: Working for: Xilinx Spartan-3A DSP Development Kit
rfajardo 4061d 07h /minsoc/trunk/sw/

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