URL
https://opencores.org/ocsvn/ion/ion/trunk
Subversion Repositories ion
Compare Revisions
- This comparison shows the changes necessary to convert path
/ion/trunk
- from Rev 66 to Rev 67
- ↔ Reverse comparison
Rev 66 → Rev 67
/src/mips_tb0_template.vhdl
1,6 → 1,7
--############################################################################## |
-- This file was generated automatically from '/src/mips_tb0_template.vhdl'. |
-- |
-- WARNING: As of rev. 55 this module is obsolete and has been left behind |
-------------------------------------------------------------------------------- |
-- Simulation test bench TB0 -- not synthesizable. |
-- |
/src/mips_tb1_template.vhdl
1,6 → 1,7
--############################################################################## |
-- This file was generated automatically from '/src/mips_tb1_template.vhdl'. |
-- |
-- WARNING: As of rev. 55 this module is obsolete and has been left behind |
-------------------------------------------------------------------------------- |
-- Simulation test bench TB1 -- not synthesizable. |
-- |
/src/ion_noxram.lds
1,6 → 1,8
/** |
* ion_noxram.lds -- Linker script file for ION project (with no RAM or cache) |
* |
* WARNING: This script is no longer used by any makefile, to be removed. |
* |
* The ion cpu has separate buses for code and data (Harvard architecture) but |
* does not have caches by default. This linker script targets that 'bare' |
* system configuration. It is meant for early testing and debugging. |
20,7 → 22,34
* FIXME code and data RAM block sizes hardcoded |
* FIXME code and data start addresses hardcoded |
*/ |
/* |
# Known problems: |
# |
# 1.- LINK PROBLEM IF FLAG '-G0' NOT USED |
# If flag '-G0' is not used on gcc, linker fails with 'relocation |
# truncated to fit: R_MIPS_GPREL16' error message. |
# This only happens when you use global or static veriables, initialized |
# or not. |
# (See explaination in the project docs about $gp indexed addressing in |
# MIPS architectures and the -G0 flag). |
# |
# SUSPECTED CAUSE: |
# I'm sure there is something wrong with my linker script. |
# With the default link scripts this does not happen. Yet we need to use |
# a script so that we can split code and data (including read-only) to |
# different sections (and later to different ram blocks). |
# |
# WORKAROUND: |
# Use -G0 flag so that _gp indexing is disabled. There is a performance |
# hit, though. In effect we're telling the compiler to NOT use $gp for |
# indexed access to any global variables. |
# This is only necessary for the 'bare' target (no external ram and no |
# cache) and will have to be fixed for regular targets (by using a |
# standard link script or fixing mine). |
|
*/ |
|
|
/* Make sure the first linked file is ths startup code from boot.s */ |
/* (We might put boot.o in the ld command line, BEFORE all other files) */ |
STARTUP(boot.o) |