| /* |
| * Copyright (c) 2019-2022, Intel Corporation. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <assert.h> |
| #include <common/debug.h> |
| #include <errno.h> |
| #include <lib/mmio.h> |
| |
| #include "ncore_ccu.h" |
| |
| uint32_t poll_active_bit(uint32_t dir); |
| |
| static coh_ss_id_t subsystem_id; |
| |
| |
| void get_subsystem_id(void) |
| { |
| uint32_t snoop_filter, directory, coh_agent; |
| |
| snoop_filter = CSIDR_NUM_SF(mmio_read_32(NCORE_CCU_CSR(NCORE_CSIDR))); |
| directory = CSUIDR_NUM_DIR(mmio_read_32(NCORE_CCU_CSR(NCORE_CSUIDR))); |
| coh_agent = CSUIDR_NUM_CAI(mmio_read_32(NCORE_CCU_CSR(NCORE_CSUIDR))); |
| |
| subsystem_id.num_snoop_filter = snoop_filter + 1; |
| subsystem_id.num_directory = directory; |
| subsystem_id.num_coh_agent = coh_agent; |
| } |
| |
| uint32_t directory_init(void) |
| { |
| uint32_t dir_sf_mtn, dir_sf_en; |
| uint32_t dir, sf, ret; |
| |
| for (dir = 0; dir < subsystem_id.num_directory; dir++) { |
| for (sf = 0; sf < subsystem_id.num_snoop_filter; sf++) { |
| dir_sf_mtn = DIRECTORY_UNIT(dir, NCORE_DIRUSFMCR); |
| dir_sf_en = DIRECTORY_UNIT(dir, NCORE_DIRUSFER); |
| |
| /* Initialize All Entries */ |
| mmio_write_32(dir_sf_mtn, SNOOP_FILTER_ID(dir)); |
| |
| /* Poll Active Bit */ |
| ret = poll_active_bit(dir); |
| if (ret != 0) { |
| ERROR("Timeout during active bit polling"); |
| return -ETIMEDOUT; |
| } |
| |
| /* Snoope Filter Enable */ |
| mmio_setbits_32(dir_sf_en, BIT(sf)); |
| } |
| } |
| |
| return 0; |
| } |
| |
| uint32_t coherent_agent_intfc_init(void) |
| { |
| uint32_t dir, ca, ca_id, ca_type, ca_snoop_en; |
| |
| for (dir = 0; dir < subsystem_id.num_directory; dir++) { |
| for (ca = 0; ca < subsystem_id.num_coh_agent; ca++) { |
| ca_snoop_en = DIRECTORY_UNIT(ca, NCORE_DIRUCASER0); |
| ca_id = mmio_read_32(COH_AGENT_UNIT(ca, NCORE_CAIUIDR)); |
| |
| /* Coh Agent Snoop Enable */ |
| if (CACHING_AGENT_BIT(ca_id)) |
| mmio_write_32(ca_snoop_en, BIT(ca)); |
| |
| /* Coh Agent Snoop DVM Enable */ |
| ca_type = CACHING_AGENT_TYPE(ca_id); |
| if (ca_type == ACE_W_DVM || ca_type == ACE_L_W_DVM) |
| mmio_write_32(NCORE_CCU_CSR(NCORE_CSADSER0), |
| BIT(ca)); |
| } |
| } |
| |
| return 0; |
| } |
| |
| uint32_t poll_active_bit(uint32_t dir) |
| { |
| uint32_t timeout = 80000; |
| uint32_t poll_dir = DIRECTORY_UNIT(dir, NCORE_DIRUSFMAR); |
| |
| while (timeout > 0) { |
| if (mmio_read_32(poll_dir) == 0) |
| return 0; |
| timeout--; |
| } |
| |
| return -1; |
| } |
| |
| void bypass_ocram_firewall(void) |
| { |
| mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF1), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF2), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF3), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| mmio_clrbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF4), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| } |
| |
| void ncore_enable_ocram_firewall(void) |
| { |
| mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF1), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF2), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF3), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| mmio_setbits_32(COH_CPU0_BYPASS_REG(NCORE_FW_OCRAM_BLK_CGF4), |
| OCRAM_PRIVILEGED_MASK | OCRAM_SECURE_MASK); |
| } |
| |
| uint32_t init_ncore_ccu(void) |
| { |
| uint32_t status; |
| |
| get_subsystem_id(); |
| status = directory_init(); |
| status = coherent_agent_intfc_init(); |
| bypass_ocram_firewall(); |
| |
| return status; |
| } |