blob: 9053728872f18fc6f6baf86bbc2f14173ec71c14 [file] [log] [blame]
/*
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <debug.h>
#include <mmio.h>
#include <sunxi_mmap.h>
#include <sunxi_private.h>
#ifdef SUNXI_SPC_BASE
#define SPC_DECPORT_STA_REG(p) (SUNXI_SPC_BASE + ((p) * 0x0c) + 0x4)
#define SPC_DECPORT_SET_REG(p) (SUNXI_SPC_BASE + ((p) * 0x0c) + 0x8)
#define SPC_DECPORT_CLR_REG(p) (SUNXI_SPC_BASE + ((p) * 0x0c) + 0xc)
#endif
#define R_PRCM_SEC_SWITCH_REG 0x1d0
#define DMA_SEC_REG 0x20
/*
* Setup the peripherals to be accessible by non-secure world.
* This will not work for the Secure Peripherals Controller (SPC) unless
* a fuse it burnt (seems to be an erratum), but we do it nevertheless,
* to allow booting on boards using secure boot.
*/
void sunxi_security_setup(void)
{
#ifdef SUNXI_SPC_BASE
int i;
INFO("Configuring SPC Controller\n");
/* SPC setup: set all devices to non-secure */
for (i = 0; i < 6; i++)
mmio_write_32(SPC_DECPORT_SET_REG(i), 0xff);
#endif
/* set MBUS clocks, bus clocks (AXI/AHB/APB) and PLLs to non-secure */
mmio_write_32(SUNXI_CCU_SEC_SWITCH_REG, 0x7);
/* set R_PRCM clocks to non-secure */
mmio_write_32(SUNXI_R_PRCM_BASE + R_PRCM_SEC_SWITCH_REG, 0x7);
/* Set all DMA channels (16 max.) to non-secure */
mmio_write_32(SUNXI_DMA_BASE + DMA_SEC_REG, 0xffff);
}