mirror of
https://github.com/antonblanchard/microwatt.git
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982cf166dd
This comes in two parts: - A generator script which uses LiteX to generate litedram cores along with their init files for various boards (currently Arty and Nexys-video). This comes with configs for arty and nexys_video. - A fusesoc "generator" which uses pre-generated litedram cores The generation process is manual on purpose. This include pre-generated cores for the two above boards. This is done so that one doesn't have to install LiteX to build microwatt. In addition, the generator script or wrapper vhdl tend to break when LiteX changes significantly which happens. This is still rather standalone and hasn't been plumbed into the SoC or the FPGA toplevel files yet. At this point LiteDRAM self-initializes using a built-in VexRiscv "Minimum" core obtained from LiteX and included in this commit. There is some plumbing to generate and cores that are initialized by Microwatt directly but this isn't working yet and so isn't enabled yet. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* Copyright 2013-2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __COMPILER_H
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#define __COMPILER_H
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#ifndef __ASSEMBLY__
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#include <stddef.h>
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/* Macros for various compiler bits and pieces */
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#define __packed __attribute__((packed))
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#define __align(x) __attribute__((__aligned__(x)))
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#define __unused __attribute__((unused))
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#define __used __attribute__((used))
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#define __section(x) __attribute__((__section__(x)))
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#define __noreturn __attribute__((noreturn))
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/* not __const as this has a different meaning (const) */
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#define __attrconst __attribute__((const))
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#define __warn_unused_result __attribute__((warn_unused_result))
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#define __noinline __attribute__((noinline))
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#if 0 /* Provided by gcc stddef.h */
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#define offsetof(type,m) __builtin_offsetof(type,m)
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#endif
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#define __nomcount __attribute__((no_instrument_function))
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/* Compiler barrier */
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static inline void barrier(void)
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{
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// asm volatile("" : : : "memory");
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}
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#endif /* __ASSEMBLY__ */
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/* Stringification macro */
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#define __tostr(x) #x
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#define tostr(x) __tostr(x)
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#endif /* __COMPILER_H */
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