From 96fe4f6485e92ed9da464c96c5f536698c5ee66d Mon Sep 17 00:00:00 2001 From: Siew Chin Lim Date: Thu, 25 Mar 2021 14:07:45 +0800 Subject: 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 Reviewed-by: Ley Foon Tan --- arch/arm/mach-socfpga/smc_api.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'arch/arm/mach-socfpga/smc_api.c') diff --git a/arch/arm/mach-socfpga/smc_api.c b/arch/arm/mach-socfpga/smc_api.c index 085daba162..8ffc7a472b 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; +} -- cgit v1.2.3