1 /* 2 * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <debug.h> 8 #include <mmio.h> 9 #include <sunxi_mmap.h> 10 11 #ifdef SUNXI_SPC_BASE 12 #define SPC_DECPORT_STA_REG(p) (SUNXI_SPC_BASE + ((p) * 0x0c) + 0x4) 13 #define SPC_DECPORT_SET_REG(p) (SUNXI_SPC_BASE + ((p) * 0x0c) + 0x8) 14 #define SPC_DECPORT_CLR_REG(p) (SUNXI_SPC_BASE + ((p) * 0x0c) + 0xc) 15 #endif 16 17 #define R_PRCM_SEC_SWITCH_REG 0x1d0 18 #define DMA_SEC_REG 0x20 19 20 /* 21 * Setup the peripherals to be accessible by non-secure world. 22 * This will not work for the Secure Peripherals Controller (SPC) unless 23 * a fuse it burnt (seems to be an erratum), but we do it nevertheless, 24 * to allow booting on boards using secure boot. 25 */ 26 void sunxi_security_setup(void) 27 { 28 #ifdef SUNXI_SPC_BASE 29 int i; 30 31 INFO("Configuring SPC Controller\n"); 32 /* SPC setup: set all devices to non-secure */ 33 for (i = 0; i < 6; i++) 34 mmio_write_32(SPC_DECPORT_SET_REG(i), 0xff); 35 #endif 36 37 /* set MBUS clocks, bus clocks (AXI/AHB/APB) and PLLs to non-secure */ 38 mmio_write_32(SUNXI_CCU_SEC_SWITCH_REG, 0x7); 39 40 /* set R_PRCM clocks to non-secure */ 41 mmio_write_32(SUNXI_R_PRCM_BASE + R_PRCM_SEC_SWITCH_REG, 0x7); 42 43 /* Set all DMA channels (16 max.) to non-secure */ 44 mmio_write_32(SUNXI_DMA_BASE + DMA_SEC_REG, 0xffff); 45 } 46