// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2020 Intel Corporation <www.intel.com> * */ #include <common.h> #include <hang.h> #include <asm/io.h> #include <asm/system.h> #include <asm/arch/misc.h> #include <asm/arch/secure_reg_helper.h> #include <asm/arch/smc_api.h> #include <asm/arch/system_manager.h> #include <linux/errno.h> #include <linux/intel-smc.h> int socfpga_secure_convert_reg_id_to_addr(u32 id, phys_addr_t *reg_addr) { switch (id) { case SOCFPGA_SECURE_REG_SYSMGR_SOC64_SDMMC: *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_SDMMC; break; case SOCFPGA_SECURE_REG_SYSMGR_SOC64_EMAC0: *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC0; break; case SOCFPGA_SECURE_REG_SYSMGR_SOC64_EMAC1: *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC1; break; case SOCFPGA_SECURE_REG_SYSMGR_SOC64_EMAC2: *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC2; break; default: return -EADDRNOTAVAIL; } return 0; } int socfpga_secure_reg_read32(u32 id, u32 *val) { int ret; u64 ret_arg; u64 args[1]; phys_addr_t reg_addr; ret = socfpga_secure_convert_reg_id_to_addr(id, ®_addr); if (ret) return ret; args[0] = (u64)reg_addr; ret = invoke_smc(INTEL_SIP_SMC_REG_READ, args, 1, &ret_arg, 1); if (ret) return ret; *val = (u32)ret_arg; return 0; } int socfpga_secure_reg_write32(u32 id, u32 val) { int ret; u64 args[2]; phys_addr_t reg_addr; ret = socfpga_secure_convert_reg_id_to_addr(id, ®_addr); if (ret) return ret; args[0] = (u64)reg_addr; args[1] = val; return invoke_smc(INTEL_SIP_SMC_REG_WRITE, args, 2, NULL, 0); } int socfpga_secure_reg_update32(u32 id, u32 mask, u32 val) { int ret; u64 args[3]; phys_addr_t reg_addr; ret = socfpga_secure_convert_reg_id_to_addr(id, ®_addr); if (ret) return ret; args[0] = (u64)reg_addr; args[1] = mask; args[2] = val; return invoke_smc(INTEL_SIP_SMC_REG_UPDATE, args, 3, NULL, 0); }