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// 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);
}
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