opensbi.git/include/sbi/riscv_asm.h, branch v0.6

lib: Add error detection for misa_extension

2019-11-27T06:40:33Z

Add assertions for misa_extension to prevent incoming illegal characters. Signed-off-by: Xiang Wang Reviewed-by: Anup Patel

lib: Fix CPU capabilities detection function

2019-11-26T10:36:29Z

On some platforms, misa may not be implemented. On such a platform, reading misa will get 0. At this time, platform is required to implement a non-standard function to detect the CPU's capabilities. Therefore, this modification add interfaces for non-standard function. The MXL field of misa is always at the highest two bits, whether it is a 32-bit 64-bit or a 128-bit machine. Therefore, this modification fixes the use of a fixed offset to detect the machine length. Signed-off-by: Xiang Wang Signed-off-by: Anup Patel

lib: Factor-out TLB management from IPI management

2019-05-24T02:52:47Z

This patch factor-out TLB management from IPI management to separate sources sbi_tlb.c and sbi_tlb.h. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: Flush everything when remote TLB flush range is too large

2019-05-21T04:36:08Z

On latest Linux kernel (i.e. 5.2-rc1), we get large TLB flush request for user space addresses (typically, start=x and end=-1). This is caused by Linux kernel commit a21344dfc6 ("riscv: fix sbi_remote_sfence_vma{,_asid}"). It's not practical to execute large number of sfence instructions for a large TLB flush range because it takes too much time and eventually causes CPU stall in Linux kernel. This patch addresses above issue by upgrading TLB flush range to TLB flush all whenever TLB flush range is greater than 1GB. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

all: run clang-format and update checked-in files

2019-04-24T04:19:46Z

Noisy commit, no functional changes. Generated with an current upstream clang-format and: clang-format -i $(find . -name \*.[ch]) Signed-off-by: Olof Johansson

all: Annotate some tables to have clang-format leave them alone

2019-04-24T04:19:46Z

One of the shortcomings of clang-format is that it doesn't allow for aligned define tables, which is used for a number of constants. Add annotation to disable the automatic formatting where needed. Signed-off-by: Olof Johansson

lib: Implement sfence.vma correctly.

2019-03-12T16:37:25Z

Currently, OpenSBI doesn't distinguish between sfence.vma and sfence.vm asid calls. Moreover, it ignores the page ranges and just flush entire TLB everytime. Fix the sfence implementation by keeping all the tlb flush info in scratch area. The relevant Linux kernel code was added by https://patchwork.kernel.org/project/linux-riscv/list/?series=89695 However, this patch is backward compatible with older version kernel that doesn't have the above patches as well. Fixes #87 Signed-off-by: Atish Patra

riscv_asm.h: Use CSR_ instead of for csr_read()

2019-02-05T13:23:09Z

Some toolchains might not have all the CSRs available (as seen with GCC 7.2). So, instead use the defined CSR_ values. Signed-off-by: Olof Johansson

all: Update copyright header in all files

2019-01-24T08:37:47Z

This patch updates copyright header in all files as follows: 1. Makes "SPDX-License-Identifier: BSD-2-Clause" as first line 2. Change copyright year to 2019 for Western Digital Signed-off-by: Anup Patel

lib: Add atomic bit set/clear operations.

2019-01-22T04:33:49Z

Add addtional functionlities for set/clear bits atomically. Signed-off-by: Atish Patra