Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 1 | /* |
Boon Khai Ng | 1e5550b | 2021-05-21 22:56:37 +0800 | [diff] [blame] | 2 | * Copyright (c) 2019-2022, Intel Corporation. All rights reserved. |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <assert.h> |
| 8 | #include <common/debug.h> |
| 9 | #include <errno.h> |
| 10 | #include <lib/mmio.h> |
| 11 | |
| 12 | #include "ncore_ccu.h" |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 13 | |
| 14 | uint32_t poll_active_bit(uint32_t dir); |
| 15 | |
| 16 | static coh_ss_id_t subsystem_id; |
| 17 | |
| 18 | |
| 19 | void get_subsystem_id(void) |
| 20 | { |
| 21 | uint32_t snoop_filter, directory, coh_agent; |
| 22 | |
| 23 | snoop_filter = CSIDR_NUM_SF(mmio_read_32(NCORE_CCU_CSR(NCORE_CSIDR))); |
| 24 | directory = CSUIDR_NUM_DIR(mmio_read_32(NCORE_CCU_CSR(NCORE_CSUIDR))); |
| 25 | coh_agent = CSUIDR_NUM_CAI(mmio_read_32(NCORE_CCU_CSR(NCORE_CSUIDR))); |
| 26 | |
| 27 | subsystem_id.num_snoop_filter = snoop_filter + 1; |
| 28 | subsystem_id.num_directory = directory; |
| 29 | subsystem_id.num_coh_agent = coh_agent; |
| 30 | } |
| 31 | |
| 32 | uint32_t directory_init(void) |
| 33 | { |
| 34 | uint32_t dir_sf_mtn, dir_sf_en; |
| 35 | uint32_t dir, sf, ret; |
| 36 | |
| 37 | for (dir = 0; dir < subsystem_id.num_directory; dir++) { |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 38 | for (sf = 0; sf < subsystem_id.num_snoop_filter; sf++) { |
Tien Hock Loh | 070ffbb | 2020-05-11 01:11:55 -0700 | [diff] [blame] | 39 | dir_sf_mtn = DIRECTORY_UNIT(dir, NCORE_DIRUSFMCR); |
| 40 | dir_sf_en = DIRECTORY_UNIT(dir, NCORE_DIRUSFER); |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 41 | |
| 42 | /* Initialize All Entries */ |
Jit Loon Lim | 12fd5ed | 2022-11-10 22:08:13 +0800 | [diff] [blame] | 43 | mmio_write_32(dir_sf_mtn, SNOOP_FILTER_ID(sf)); |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 44 | |
| 45 | /* Poll Active Bit */ |
| 46 | ret = poll_active_bit(dir); |
| 47 | if (ret != 0) { |
| 48 | ERROR("Timeout during active bit polling"); |
| 49 | return -ETIMEDOUT; |
| 50 | } |
| 51 | |
Jit Loon Lim | 12fd5ed | 2022-11-10 22:08:13 +0800 | [diff] [blame] | 52 | /* Disable snoop filter, a bit per snoop filter */ |
| 53 | mmio_clrbits_32(dir_sf_en, BIT(sf)); |
| 54 | |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 55 | } |
| 56 | } |
| 57 | |
| 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | uint32_t coherent_agent_intfc_init(void) |
| 62 | { |
| 63 | uint32_t dir, ca, ca_id, ca_type, ca_snoop_en; |
| 64 | |
| 65 | for (dir = 0; dir < subsystem_id.num_directory; dir++) { |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 66 | for (ca = 0; ca < subsystem_id.num_coh_agent; ca++) { |
Tien Hock Loh | 070ffbb | 2020-05-11 01:11:55 -0700 | [diff] [blame] | 67 | ca_snoop_en = DIRECTORY_UNIT(ca, NCORE_DIRUCASER0); |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 68 | ca_id = mmio_read_32(COH_AGENT_UNIT(ca, NCORE_CAIUIDR)); |
| 69 | |
| 70 | /* Coh Agent Snoop Enable */ |
| 71 | if (CACHING_AGENT_BIT(ca_id)) |
| 72 | mmio_write_32(ca_snoop_en, BIT(ca)); |
| 73 | |
| 74 | /* Coh Agent Snoop DVM Enable */ |
| 75 | ca_type = CACHING_AGENT_TYPE(ca_id); |
| 76 | if (ca_type == ACE_W_DVM || ca_type == ACE_L_W_DVM) |
| 77 | mmio_write_32(NCORE_CCU_CSR(NCORE_CSADSER0), |
| 78 | BIT(ca)); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | uint32_t poll_active_bit(uint32_t dir) |
| 86 | { |
| 87 | uint32_t timeout = 80000; |
| 88 | uint32_t poll_dir = DIRECTORY_UNIT(dir, NCORE_DIRUSFMAR); |
| 89 | |
| 90 | while (timeout > 0) { |
| 91 | if (mmio_read_32(poll_dir) == 0) |
| 92 | return 0; |
| 93 | timeout--; |
| 94 | } |
| 95 | |
| 96 | return -1; |
| 97 | } |
| 98 | |
| 99 | void bypass_ocram_firewall(void) |
| 100 | { |
| 101 | mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF1), |
| 102 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 103 | mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF2), |
| 104 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 105 | mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF3), |
| 106 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 107 | mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF4), |
| 108 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 109 | } |
| 110 | |
Boon Khai Ng | 1e5550b | 2021-05-21 22:56:37 +0800 | [diff] [blame] | 111 | void ncore_enable_ocram_firewall(void) |
| 112 | { |
| 113 | mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF1), |
| 114 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 115 | mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF2), |
| 116 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 117 | mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF3), |
| 118 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 119 | mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF4), |
| 120 | OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| 121 | } |
Abdul Halim, Muhammad Hadi Asyrafi | 2f94ca4 | 2020-08-05 22:40:46 +0800 | [diff] [blame] | 122 | |
Hadi Asyrafi | 073e70d | 2019-06-17 12:30:22 +0800 | [diff] [blame] | 123 | uint32_t init_ncore_ccu(void) |
| 124 | { |
| 125 | uint32_t status; |
| 126 | |
| 127 | get_subsystem_id(); |
| 128 | status = directory_init(); |
| 129 | status = coherent_agent_intfc_init(); |
| 130 | bypass_ocram_firewall(); |
| 131 | |
| 132 | return status; |
| 133 | } |