opensbi.git/include/sbi/sbi_scratch.h, branch v1.0

lib: sbi_scratch: remove owner from sbi_scratch_alloc_offset

2021-06-02T11:37:26Z

The parameter owner of function sbi_scratch_alloc_offset() is never used. The scratch memory is small. We should not use it for debug information in future. Hence eliminate the parameter. Signed-off-by: Heinrich Schuchardt Reviewed-by: Xiang W Reviewed-by: Anup Patel

include: headers: Replace ASSEMBLY with ASSEMBLER

2021-03-22T10:32:48Z

GCC has already a predefined macro __ASSEMBLER__ therefore, it can be used without the need to define a new flag with -D__ASSEMBLY__. This is useful when adding the library to projects having a build system such one can build without the need to make changes. THe build system does not use the Makefile in the sources tree. Signed-off-by: Marouene Boubakri Signed-off-by: Anup Patel

include: sbi: No need to pack struct sbi_scratch

2021-01-15T05:10:31Z

All members in struct sbi_scrach are of machine word size so no need to pack this structure. This also allows GCC to generate more optimized instruction sequence when accessing members of struct sbi_scratch. Reported-by: Paul Campbell Signed-off-by: Anup Patel Reviewed-by: Alistair Francis Reviewed-by: Atish Patra

lib: sbi: Introduce sbi_trap_exit() API

2021-01-07T04:23:17Z

We introduce sbi_trap_exit() API which can help non-firmware (i.e. generic or platform) code to force exit trap/interrupt handling and resume execution at context pointed by parameter "const struct sbi_trap_regs *regs". This new sbi_trap_exit() API will help Keystone Enclave project to resume execution of enclave from custom SBI call handler. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: sbi_scratch: typo scatch

2020-10-02T10:20:55Z

%s/scatch/scratch Signed-off-by: Heinrich Schuchardt Reviewed-by: Anup Patel

lib: sbi_scratch: Introduce sbi_scratch_last_hartid() API

2020-03-28T08:02:41Z

The patch adds sbi_scratch_last_hartid() API which returns last HART id having a scratch space. We can use this new API to optimize places where we iterate over HART id from 0 to SBI_HARTMASK_MAX_BITS. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

include: Simplify HART id to scratch macro

2020-03-19T03:34:29Z

This patch simplify HART id to scratch macro as follows: 1. Remove current "scratch" pointer argument because now we use HART id to scratch table 2. Rename sbi_hart_id_to_scratch() to sbi_hartid_to_scratch() to have macro name consistent with the name of callback in struct sbi_scratch Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

lib: sbi_scratch: Introduce HART id to scratch table

2020-03-19T03:32:23Z

Instead of calling hartid_to_scratch() callback every time when we want sbi_scratch pointer from HART id, we create a table of sbi_scratch pointers and use that to get sbi_scratch pointer. As a result of HART id to scratch table, the conversion of HART id to sbi_scratch pointer is just 2-3 instructions which was 9 instructions previously. Signed-off-by: Anup Patel Reviewed-by: Bin Meng Reviewed-by: Atish Patra

include: Make sbi_hart_id_to_scratch() as macro

2020-03-13T06:48:07Z

The sbi_hart_id_to_scratch() just forwards call to firmware specific hartid_to_scratch() callback so we make sbi_hart_id_to_scratch() as macro in sbi_scratch.h instead of regular function in sbi_hart.c. Signed-off-by: Anup Patel Reviewed-by: Atish Patra Reviewed-by: Bin Meng

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