diff options
| author | Siew Chin Lim <elly.siew.chin.lim@intel.com> | 2021-03-25 14:07:45 +0800 |
|---|---|---|
| committer | Ley Foon Tan <ley.foon.tan@intel.com> | 2021-04-08 17:29:13 +0800 |
| commit | 96fe4f6485e92ed9da464c96c5f536698c5ee66d (patch) | |
| tree | 158ad436e7a2568ec6e0d6f7fec3e86eac8a9455 | |
| parent | cdca9860705291de736d40ddc52acba2daaec106 (diff) | |
arm: socfpga: smc: Add function to get usercode
Add function to send mailbox command via SMC to get usercode from SDM.
Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
| -rw-r--r-- | arch/arm/mach-socfpga/include/mach/smc_api.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-socfpga/smc_api.c | 17 | ||||
| -rw-r--r-- | include/linux/intel-smc.h | 18 |
3 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/mach-socfpga/include/mach/smc_api.h b/arch/arm/mach-socfpga/include/mach/smc_api.h index bbefdd8dd98..6b5b7eadc66 100644 --- a/arch/arm/mach-socfpga/include/mach/smc_api.h +++ b/arch/arm/mach-socfpga/include/mach/smc_api.h @@ -9,5 +9,6 @@ int invoke_smc(u32 func_id, u64 *args, int arg_len, u64 *ret_arg, int ret_len); int smc_send_mailbox(u32 cmd, u32 len, u32 *arg, u8 urgent, u32 *resp_buf_len, u32 *resp_buf); +int smc_get_usercode(u32 *usercode); #endif /* _SMC_API_H_ */ diff --git a/arch/arm/mach-socfpga/smc_api.c b/arch/arm/mach-socfpga/smc_api.c index 085daba162a..8ffc7a472b5 100644 --- a/arch/arm/mach-socfpga/smc_api.c +++ b/arch/arm/mach-socfpga/smc_api.c @@ -54,3 +54,20 @@ int smc_send_mailbox(u32 cmd, u32 len, u32 *arg, u8 urgent, u32 *resp_buf_len, return (int)resp[0]; } + +int smc_get_usercode(u32 *usercode) +{ + int ret; + u64 resp; + + if (!usercode) + return -EINVAL; + + ret = invoke_smc(INTEL_SIP_SMC_GET_USERCODE, NULL, 0, + &resp, 1); + + if (ret == INTEL_SIP_SMC_STATUS_OK) + *usercode = (u32)resp; + + return ret; +} diff --git a/include/linux/intel-smc.h b/include/linux/intel-smc.h index 68d62be4179..a54eff43add 100644 --- a/include/linux/intel-smc.h +++ b/include/linux/intel-smc.h @@ -518,4 +518,22 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE) #define INTEL_SIP_SMC_MBOX_SEND_CMD \ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_MBOX_SEND_CMD) +/* + * Request INTEL_SIP_SMC_GET_USERCODE + * + * Send mailbox command to get usercode from SDM + * + * Call register usage: + * a0 INTEL_SIP_SMC_GET_USERCODE + * a1-7 not used. + * + * Return status + * a0 INTEL_SIP_SMC_STATUS_OK or INTEL_SIP_SMC_STATUS_ERROR + * a1 User code + * a2-3 not used. + */ +#define INTEL_SIP_SMC_FUNCID_GET_USERCODE 61 +#define INTEL_SIP_SMC_GET_USERCODE \ + INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_GET_USERCODE) + #endif |