rtucker85 commented on a change in pull request #5835: URL: https://github.com/apache/incubator-nuttx/pull/5835#discussion_r834861334
########## File path: arch/risc-v/src/litex/litex_cache.c ########## @@ -0,0 +1,76 @@ +/**************************************************************************** + * arch/risc-v/src/common/riscv_cache.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/cache.h> +#include <nuttx/irq.h> + +/**************************************************************************** + * Name: up_invalidate_dcache_all + * + * Description: + * Invalidate the entire contents of D cache. + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#ifdef CONFIG_ARCH_DCACHE +void up_invalidate_dcache_all(void) +{ + asm volatile(".word(0x500F)\n"); Review comment: This is a custom instruction for VexRiscV - It does not appear in the RiscV standard. Ill make a comment in the code to document this. ########## File path: arch/risc-v/src/litex/litex_cache.c ########## @@ -0,0 +1,76 @@ +/**************************************************************************** + * arch/risc-v/src/common/riscv_cache.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> +#include <nuttx/cache.h> +#include <nuttx/irq.h> + +/**************************************************************************** + * Name: up_invalidate_dcache_all + * + * Description: + * Invalidate the entire contents of D cache. + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#ifdef CONFIG_ARCH_DCACHE +void up_invalidate_dcache_all(void) +{ + asm volatile(".word(0x500F)\n"); +} +#endif + +/**************************************************************************** + * Name: up_invalidate_icache_all + * + * Description: + * Invalidate the entire contents of I cache. + * + * Input Parameters: + * None + * + * Returned Value: + * None + * + ****************************************************************************/ + +#ifdef CONFIG_ARCH_ICACHE +void up_invalidate_icache_all(void) +{ + asm volatile( + ".word(0x100F)\n" Review comment: ditto -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
