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| author | Anup Patel <anup.patel@wdc.com> | 2020-06-10 16:09:53 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-06-20 08:06:13 +0300 |
| commit | 2314101989684585f942b50a827aac4886825ba1 (patch) | |
| tree | 37f1248c1c6272d5bb62a3c6e67a64cb215ce2d5 /include/sbi/sbi_ecall_interface.h | |
| parent | 9bd5f8f17d31f8989525643a04da87d090fe3033 (diff) | |
| download | opensbi-2314101989684585f942b50a827aac4886825ba1.tar.xz | |
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>
Diffstat (limited to 'include/sbi/sbi_ecall_interface.h')
| -rw-r--r-- | include/sbi/sbi_ecall_interface.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/sbi/sbi_ecall_interface.h b/include/sbi/sbi_ecall_interface.h index 0cdde39..af30500 100644 --- a/include/sbi/sbi_ecall_interface.h +++ b/include/sbi/sbi_ecall_interface.h @@ -13,7 +13,7 @@ /* clang-format off */ /* SBI Extension IDs */ -#define SBI_EXT_0_1_SET_TIMER 0x0 +#define SBI_EXT_0_1_SET_TIMER 0x0 #define SBI_EXT_0_1_CONSOLE_PUTCHAR 0x1 #define SBI_EXT_0_1_CONSOLE_GETCHAR 0x2 #define SBI_EXT_0_1_CLEAR_IPI 0x3 @@ -69,6 +69,18 @@ #define SBI_EXT_VENDOR_END 0x09FFFFFF #define SBI_EXT_FIRMWARE_START 0x0A000000 #define SBI_EXT_FIRMWARE_END 0x0AFFFFFF + +/* SBI return error codes */ +#define SBI_SUCCESS 0 +#define SBI_ERR_FAILED -1 +#define SBI_ERR_NOT_SUPPORTED -2 +#define SBI_ERR_INVALID_PARAM -3 +#define SBI_ERR_DENIED -4 +#define SBI_ERR_INVALID_ADDRESS -5 +#define SBI_ERR_ALREADY_AVAILABLE -6 + +#define SBI_LAST_ERR SBI_ERR_ALREADY_AVAILABLE + /* clang-format on */ #endif |