mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-19 00:18:51 +09:00
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
![]() |
// SPDX-License-Identifier: GPL-2.0+
|
||
|
/*
|
||
|
* (C) Copyright 2016 Nexell
|
||
|
* Youngbok, Park <park@nexell.co.kr>
|
||
|
*/
|
||
|
|
||
|
#include <linux/types.h>
|
||
|
#include <asm/io.h>
|
||
|
#include <asm/arch/nexell.h>
|
||
|
#include <asm/arch/sec_reg.h>
|
||
|
#include <linux/linkage.h>
|
||
|
|
||
|
#define NEXELL_SMC_BASE 0x82000000
|
||
|
|
||
|
#define NEXELL_SMC_FN(n) (NEXELL_SMC_BASE + (n))
|
||
|
|
||
|
#define NEXELL_SMC_SEC_REG_WRITE NEXELL_SMC_FN(0x0)
|
||
|
#define NEXELL_SMC_SEC_REG_READ NEXELL_SMC_FN(0x1)
|
||
|
|
||
|
#define SECURE_ID_SHIFT 8
|
||
|
|
||
|
#define SEC_4K_OFFSET ((4 * 1024) - 1)
|
||
|
#define SEC_64K_OFFSET ((64 * 1024) - 1)
|
||
|
|
||
|
asmlinkage int __invoke_nexell_fn_smc(u32, u32, u32, u32);
|
||
|
|
||
|
int write_sec_reg_by_id(void __iomem *reg, int val, int id)
|
||
|
{
|
||
|
int ret = 0;
|
||
|
u32 off = 0;
|
||
|
|
||
|
switch (id) {
|
||
|
case NEXELL_L2C_SEC_ID:
|
||
|
case NEXELL_MIPI_SEC_ID:
|
||
|
case NEXELL_TOFF_SEC_ID:
|
||
|
off = (u32)reg & SEC_4K_OFFSET;
|
||
|
break;
|
||
|
case NEXELL_MALI_SEC_ID:
|
||
|
off = (u32)reg & SEC_64K_OFFSET;
|
||
|
break;
|
||
|
}
|
||
|
ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_WRITE |
|
||
|
((1 << SECURE_ID_SHIFT) + id), off, val, 0);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
int read_sec_reg_by_id(void __iomem *reg, int id)
|
||
|
{
|
||
|
int ret = 0;
|
||
|
u32 off = 0;
|
||
|
|
||
|
switch (id) {
|
||
|
case NEXELL_L2C_SEC_ID:
|
||
|
case NEXELL_MIPI_SEC_ID:
|
||
|
case NEXELL_TOFF_SEC_ID:
|
||
|
off = (u32)reg & SEC_4K_OFFSET;
|
||
|
break;
|
||
|
case NEXELL_MALI_SEC_ID:
|
||
|
off = (u32)reg & SEC_64K_OFFSET;
|
||
|
break;
|
||
|
}
|
||
|
ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_READ |
|
||
|
((1 << SECURE_ID_SHIFT) + id), off, 0, 0);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
int write_sec_reg(void __iomem *reg, int val)
|
||
|
{
|
||
|
int ret = 0;
|
||
|
|
||
|
ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_WRITE,
|
||
|
(u32)reg, val, 0);
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
int read_sec_reg(void __iomem *reg)
|
||
|
{
|
||
|
int ret = 0;
|
||
|
|
||
|
ret = __invoke_nexell_fn_smc(NEXELL_SMC_SEC_REG_READ, (u32)reg, 0, 0);
|
||
|
return ret;
|
||
|
}
|