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imx: add i.MX8 SoCs OTP SIP(silicon provider) service support 

For NXP's i.MX8 SoCs with system controller inside, OTP is
maintained by SCFW, Linux needs to call SMC to trap to TF-A
for OTP read/write etc. operations by calling SCFW API.

This patch adds OTP SIP service support.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
This commit is contained in:
Anson Huang 2019-01-18 10:27:48 +08:00
parent 936840f143
commit dbfa45e816
3 changed files with 34 additions and 0 deletions
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26
plat/imx/common/imx_sip_handler.c
View File

@ -102,3 +102,29 @@ int imx_wakeup_src_handler(uint32_t smc_fid,
return SMC_OK;
}
int imx_otp_handler(uint32_t smc_fid,
void *handle,
u_register_t x1,
u_register_t x2)
{
int ret;
uint32_t fuse;
switch (smc_fid) {
case IMX_SIP_OTP_READ:
ret = sc_misc_otp_fuse_read(ipc_handle, x1, &fuse);
SMC_RET2(handle, ret, fuse);
break;
case IMX_SIP_OTP_WRITE:
ret = sc_misc_otp_fuse_write(ipc_handle, x1, x2);
SMC_RET1(handle, ret);
break;
default:
ret = SMC_UNK;
SMC_RET1(handle, ret);
break;
}
return ret;
}

3
plat/imx/common/imx_sip_svc.c
View File

@ -34,6 +34,9 @@ static uintptr_t imx_sip_handler(unsigned int smc_fid,
break;
case IMX_SIP_WAKEUP_SRC:
SMC_RET1(handle, imx_wakeup_src_handler(smc_fid, x1, x2, x3));
case IMX_SIP_OTP_READ:
case IMX_SIP_OTP_WRITE:
return imx_otp_handler(smc_fid, handle, x1, x2);
#endif
default:
WARN("Unimplemented i.MX SiP Service Call: 0x%x\n", smc_fid);

5
plat/imx/common/include/imx_sip_svc.h
View File

@ -18,6 +18,9 @@
#define IMX_SIP_WAKEUP_SRC_SCU 0x1
#define IMX_SIP_WAKEUP_SRC_IRQSTEER 0x2
#define IMX_SIP_OTP_READ 0xC200000A
#define IMX_SIP_OTP_WRITE 0xC200000B
#if (defined(PLAT_IMX8QM) || defined(PLAT_IMX8QX))
int imx_cpufreq_handler(uint32_t smc_fid, u_register_t x1,
u_register_t x2, u_register_t x3);
@ -25,6 +28,8 @@ int imx_srtc_handler(uint32_t smc_fid, void *handle, u_register_t x1,
u_register_t x2, u_register_t x3, u_register_t x4);
int imx_wakeup_src_handler(uint32_t smc_fid, u_register_t x1,
u_register_t x2, u_register_t x3);
int imx_otp_handler(uint32_t smc_fid, void *handle,
u_register_t x1, u_register_t x2);
#endif
#endif /* __IMX_SIP_SVC_H__ */