1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2020 Intel Corporation <www.intel.com>
10 #include <asm/system.h>
11 #include <asm/arch/misc.h>
12 #include <asm/arch/secure_reg_helper.h>
13 #include <asm/arch/smc_api.h>
14 #include <asm/arch/system_manager.h>
15 #include <linux/errno.h>
16 #include <linux/intel-smc.h>
18 int socfpga_secure_convert_reg_id_to_addr(u32 id, phys_addr_t *reg_addr)
21 case SOCFPGA_SECURE_REG_SYSMGR_SOC64_SDMMC:
22 *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_SDMMC;
24 case SOCFPGA_SECURE_REG_SYSMGR_SOC64_EMAC0:
25 *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC0;
27 case SOCFPGA_SECURE_REG_SYSMGR_SOC64_EMAC1:
28 *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC1;
30 case SOCFPGA_SECURE_REG_SYSMGR_SOC64_EMAC2:
31 *reg_addr = socfpga_get_sysmgr_addr() + SYSMGR_SOC64_EMAC2;
34 return -EADDRNOTAVAIL;
39 int socfpga_secure_reg_read32(u32 id, u32 *val)
46 ret = socfpga_secure_convert_reg_id_to_addr(id, ®_addr);
50 args[0] = (u64)reg_addr;
51 ret = invoke_smc(INTEL_SIP_SMC_REG_READ, args, 1, &ret_arg, 1);
60 int socfpga_secure_reg_write32(u32 id, u32 val)
66 ret = socfpga_secure_convert_reg_id_to_addr(id, ®_addr);
70 args[0] = (u64)reg_addr;
72 return invoke_smc(INTEL_SIP_SMC_REG_WRITE, args, 2, NULL, 0);
75 int socfpga_secure_reg_update32(u32 id, u32 mask, u32 val)
81 ret = socfpga_secure_convert_reg_id_to_addr(id, ®_addr);
85 args[0] = (u64)reg_addr;
88 return invoke_smc(INTEL_SIP_SMC_REG_UPDATE, args, 3, NULL, 0);