1 /* 2 * Copyright (C) 2018 Marvell International Ltd. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 * https://spdx.org/licenses 6 */ 7 8 #include <platform_def.h> 9 10 #include <common/bl_common.h> 11 #include <common/debug.h> 12 #include <drivers/marvell/ccu.h> 13 #include <drivers/marvell/mochi/ap_setup.h> 14 #include <drivers/marvell/mochi/cp110_setup.h> 15 #include <lib/mmio.h> 16 17 #include <armada_common.h> 18 #include <marvell_plat_priv.h> /* timer functionality */ 19 20 #include "mss_scp_bootloader.h" 21 22 /* MSS windows configuration */ 23 #define MSS_AEBR(base) (base + 0x160) 24 #define MSS_AIBR(base) (base + 0x164) 25 #define MSS_AEBR_MASK 0xFFF 26 #define MSS_AIBR_MASK 0xFFF 27 28 #define MSS_EXTERNAL_SPACE 0x50000000 29 #define MSS_EXTERNAL_ACCESS_BIT 28 30 #define MSS_EXTERNAL_ADDR_MASK 0xfffffff 31 #define MSS_INTERNAL_ACCESS_BIT 28 32 33 struct addr_map_win ccu_mem_map[] = { 34 {MVEBU_CP_REGS_BASE(0), 0x4000000, IO_0_TID} 35 }; 36 37 /* Since the scp_bl2 image can contain firmware for cp1 and cp0 coprocessors, 38 * the access to cp0 and cp1 need to be provided. More precisely it is 39 * required to: 40 * - get the information about device id which is stored in CP0 registers 41 * (to distinguish between cases where we have cp0 and cp1 or standalone cp0) 42 * - get the access to cp which is needed for loading fw for cp0/cp1 43 * coprocessors 44 * This function configures ccu windows accordingly. 45 * 46 * Note: there is no need to restore previous ccu configuration, since in next 47 * phase (BL31) the init_ccu will be called (via apn806_init/ 48 * bl31_plat_arch_setu) and therefore the ccu configuration will be overwritten. 49 */ 50 static int bl2_plat_mmap_init(void) 51 { 52 int cfg_num, win_id, cfg_idx, cp; 53 54 cfg_num = ARRAY_SIZE(ccu_mem_map); 55 56 /* CCU window-0 should not be counted - it's already used */ 57 if (cfg_num > (MVEBU_CCU_MAX_WINS - 1)) { 58 ERROR("BL2: %s: trying to open too many windows\n", __func__); 59 return -1; 60 } 61 62 /* Enable required CCU windows 63 * Do not touch CCU window 0, 64 * it's used for the internal registers access 65 */ 66 for (cfg_idx = 0, win_id = 1; cfg_idx < cfg_num; cfg_idx++, win_id++) { 67 /* Enable required CCU windows */ 68 ccu_win_check(&ccu_mem_map[cfg_idx]); 69 ccu_enable_win(MVEBU_AP0, &ccu_mem_map[cfg_idx], win_id); 70 } 71 72 /* Config address for each cp other than cp0 */ 73 for (cp = 1; cp < CP_COUNT; cp++) 74 update_cp110_default_win(cp); 75 76 /* There is need to configure IO_WIN windows again to overwrite 77 * temporary configuration done during update_cp110_default_win 78 */ 79 init_io_win(MVEBU_AP0); 80 81 /* Open AMB bridge required for MG access */ 82 for (cp = 0; cp < CP_COUNT; cp++) 83 cp110_amb_init(MVEBU_CP_REGS_BASE(cp)); 84 85 return 0; 86 } 87 88 /***************************************************************************** 89 * Transfer SCP_BL2 from Trusted RAM using the SCP Download protocol. 90 * Return 0 on success, -1 otherwise. 91 ***************************************************************************** 92 */ 93 int bl2_plat_handle_scp_bl2(image_info_t *scp_bl2_image_info) 94 { 95 int ret; 96 97 INFO("BL2: Initiating SCP_BL2 transfer to SCP\n"); 98 99 /* initialize time (for delay functionality) */ 100 plat_delay_timer_init(); 101 102 ret = bl2_plat_mmap_init(); 103 if (ret != 0) 104 return ret; 105 106 ret = scp_bootloader_transfer((void *)scp_bl2_image_info->image_base, 107 scp_bl2_image_info->image_size); 108 109 if (ret == 0) 110 INFO("BL2: SCP_BL2 transferred to SCP\n"); 111 else 112 ERROR("BL2: SCP_BL2 transfer failure\n"); 113 114 return ret; 115 } 116 117 uintptr_t bl2_plat_get_cp_mss_regs(int ap_idx, int cp_idx) 118 { 119 return MVEBU_CP_REGS_BASE(cp_idx) + 0x280000; 120 } 121 122 uintptr_t bl2_plat_get_ap_mss_regs(int ap_idx) 123 { 124 return MVEBU_REGS_BASE + 0x580000; 125 } 126 127 uint32_t bl2_plat_get_cp_count(int ap_idx) 128 { 129 uint32_t revision = cp110_device_id_get(MVEBU_CP_REGS_BASE(0)); 130 /* A8040: two CPs. 131 * A7040: one CP. 132 */ 133 if (revision == MVEBU_80X0_DEV_ID || 134 revision == MVEBU_80X0_CP115_DEV_ID) 135 return 2; 136 else 137 return 1; 138 } 139 140 uint32_t bl2_plat_get_ap_count(void) 141 { 142 /* A8040 and A7040 have only one AP */ 143 return 1; 144 } 145 146 void bl2_plat_configure_mss_windows(uintptr_t mss_regs) 147 { 148 /* set AXI External and Internal Address Bus extension */ 149 mmio_write_32(MSS_AEBR(mss_regs), 150 ((0x0 >> MSS_EXTERNAL_ACCESS_BIT) & MSS_AEBR_MASK)); 151 mmio_write_32(MSS_AIBR(mss_regs), 152 ((mss_regs >> MSS_INTERNAL_ACCESS_BIT) & MSS_AIBR_MASK)); 153 } 154