ns_access.c
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/*
* Copyright 2014 Freescale Semiconductor
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <fsl_csu.h>
#include <asm/arch/ns_access.h>
#include <asm/arch/fsl_serdes.h>
void set_devices_ns_access(unsigned long index, u16 val)
{
u32 *base = (u32 *)CONFIG_SYS_FSL_CSU_ADDR;
u32 *reg;
uint32_t tmp;
reg = base + index / 2;
tmp = in_be32(reg);
if (index % 2 == 0) {
tmp &= 0x0000ffff;
tmp |= val << 16;
} else {
tmp &= 0xffff0000;
tmp |= val;
}
out_be32(reg, tmp);
}
static void enable_devices_ns_access(struct csu_ns_dev *ns_dev, uint32_t num)
{
int i;
for (i = 0; i < num; i++)
set_devices_ns_access(ns_dev[i].ind, ns_dev[i].val);
}
void enable_layerscape_ns_access(void)
{
#ifdef CONFIG_ARM64
if (current_el() == 3)
#endif
enable_devices_ns_access(ns_dev, ARRAY_SIZE(ns_dev));
}
void set_pcie_ns_access(int pcie, u16 val)
{
switch (pcie) {
#ifdef CONFIG_PCIE1
case PCIE1:
set_devices_ns_access(CSU_CSLX_PCIE1, val);
set_devices_ns_access(CSU_CSLX_PCIE1_IO, val);
return;
#endif
#ifdef CONFIG_PCIE2
case PCIE2:
set_devices_ns_access(CSU_CSLX_PCIE2, val);
set_devices_ns_access(CSU_CSLX_PCIE2_IO, val);
return;
#endif
#ifdef CONFIG_PCIE3
case PCIE3:
set_devices_ns_access(CSU_CSLX_PCIE3, val);
set_devices_ns_access(CSU_CSLX_PCIE3_IO, val);
return;
#endif
default:
debug("The PCIE%d doesn't exist!\n", pcie);
return;
}
}