Anup Patel 2314101989 lib: Don't return any invalid error from SBI ecall ...

We should only return valid error codes from SBI ecalls as
defined by the RISC-V SBI spec.

To achieve this:
1. We use SBI_Exxxx defines for OpenSBI internal errors with
   error values starting from -1000
2. We use SBI_ERR_xxxx defines for errors defined by SBI spec
3. We map some of the SBI_Exxxx defines to SBI_ERR_xxxx defines
   which are semantically same
4. We throw a error print and force return error code to
   SBI_ERR_FAILED in sbi_ecall_handler() if we see an invalid
   error code being returned to S-mode

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>

2020-06-20 10:36:13 +05:30

..

sbi

lib: Don't return any invalid error from SBI ecall

2020-06-20 10:36:13 +05:30

utils

platform: Add support for Shakti C-class SoC from IIT-M

2020-06-19 09:21:46 +05:30