diff options
Diffstat (limited to '')
-rw-r--r-- | plat/intel/soc/common/drivers/ccu/ncore_ccu.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/plat/intel/soc/common/drivers/ccu/ncore_ccu.c b/plat/intel/soc/common/drivers/ccu/ncore_ccu.c new file mode 100644 index 0000000..d9a238e --- /dev/null +++ b/plat/intel/soc/common/drivers/ccu/ncore_ccu.c @@ -0,0 +1,132 @@ +/* + * 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; +} |