1*54fd6939SJiyong Park /* 2*54fd6939SJiyong Park * Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved. 3*54fd6939SJiyong Park * 4*54fd6939SJiyong Park * SPDX-License-Identifier: BSD-3-Clause 5*54fd6939SJiyong Park */ 6*54fd6939SJiyong Park 7*54fd6939SJiyong Park #include <common/debug.h> 8*54fd6939SJiyong Park #include <lib/mmio.h> 9*54fd6939SJiyong Park 10*54fd6939SJiyong Park #include <sunxi_ccu.h> 11*54fd6939SJiyong Park #include <sunxi_mmap.h> 12*54fd6939SJiyong Park #include <sunxi_private.h> 13*54fd6939SJiyong Park #include <sunxi_spc.h> 14*54fd6939SJiyong Park 15*54fd6939SJiyong Park #define DMA_SEC_REG 0x20 16*54fd6939SJiyong Park 17*54fd6939SJiyong Park /* 18*54fd6939SJiyong Park * Setup the peripherals to be accessible by non-secure world. 19*54fd6939SJiyong Park * This will not work for the Secure Peripherals Controller (SPC) unless 20*54fd6939SJiyong Park * a fuse it burnt (seems to be an erratum), but we do it nevertheless, 21*54fd6939SJiyong Park * to allow booting on boards using secure boot. 22*54fd6939SJiyong Park */ sunxi_security_setup(void)23*54fd6939SJiyong Parkvoid sunxi_security_setup(void) 24*54fd6939SJiyong Park { 25*54fd6939SJiyong Park int i; 26*54fd6939SJiyong Park 27*54fd6939SJiyong Park INFO("Configuring SPC Controller\n"); 28*54fd6939SJiyong Park /* SPC setup: set all devices to non-secure */ 29*54fd6939SJiyong Park for (i = 0; i < SUNXI_SPC_NUM_PORTS; i++) 30*54fd6939SJiyong Park mmio_write_32(SUNXI_SPC_DECPORT_SET_REG(i), 0xffffffff); 31*54fd6939SJiyong Park 32*54fd6939SJiyong Park /* set MBUS clocks, bus clocks (AXI/AHB/APB) and PLLs to non-secure */ 33*54fd6939SJiyong Park mmio_write_32(SUNXI_CCU_SEC_SWITCH_REG, 0x7); 34*54fd6939SJiyong Park 35*54fd6939SJiyong Park /* Set R_PRCM bus clocks to non-secure */ 36*54fd6939SJiyong Park mmio_write_32(SUNXI_R_PRCM_SEC_SWITCH_REG, 0x1); 37*54fd6939SJiyong Park 38*54fd6939SJiyong Park /* Set all DMA channels (16 max.) to non-secure */ 39*54fd6939SJiyong Park mmio_write_32(SUNXI_DMA_BASE + DMA_SEC_REG, 0xffff); 40*54fd6939SJiyong Park } 41