opensbi.git/include/sbi/riscv_asm.h, branch v0.7

lib: sbi: Update pmp_get() to return decoded size directly

2020-03-18T03:28:26Z

Currently pmp_get() returns the log2 length of the PMP memory region size. The caller has to calculate the size based on that and the same codes are duplicated. Update this function to return decoded size directly. Signed-off-by: Bin Meng Reviewed-by: Atish Patra

include: Make sbi_current_hartid() as macro in riscv_asm.h

2020-03-13T06:52:02Z

The sbi_current_hartid() being a regular function is quite expensive because for callers it is a function call instead of a direct CSR read. This patch converts sbi_current_hartid() into a macro in riscv_asm.h. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi: Fix coding style issues

2020-03-10T04:57:28Z

This fixes various coding style issues found in the SBI codes. No functional changes. Signed-off-by: Bin Meng Reviewed-by: Anup Patel

include: Move bits related defines and macros to sbi_bitops.h

2020-03-08T05:36:18Z

The right location for all bits related defines and macros is sbi_bitops.h hence this patch. With this patch, the sbi_bits.h is redundant so we remove it. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

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