diff options
Diffstat (limited to 'plat/arm/board/n1sdp/n1sdp_bl31_setup.c')
| -rw-r--r-- | plat/arm/board/n1sdp/n1sdp_bl31_setup.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/plat/arm/board/n1sdp/n1sdp_bl31_setup.c b/plat/arm/board/n1sdp/n1sdp_bl31_setup.c new file mode 100644 index 0000000..5e897fe --- /dev/null +++ b/plat/arm/board/n1sdp/n1sdp_bl31_setup.c @@ -0,0 +1,161 @@ +/* + * Copyright (c) 2018-2022, Arm Limited. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <common/debug.h> +#include <drivers/arm/css/css_mhu_doorbell.h> +#include <drivers/arm/css/scmi.h> +#include <drivers/arm/css/sds.h> +#include <drivers/arm/gic600_multichip.h> +#include <lib/mmio.h> +#include <lib/utils.h> +#include <plat/arm/common/plat_arm.h> + +#include "n1sdp_def.h" +#include <platform_def.h> + +/* + * Platform information structure stored in SDS. + * This structure holds information about platform's DDR + * size which will be used to zero out the memory before + * enabling the ECC capability as well as information + * about multichip setup + * - multichip mode + * - secondary_count + * - Local DDR size in GB, DDR memory in master board + * - Remote DDR size in GB, DDR memory in secondary board + */ +struct n1sdp_plat_info { + bool multichip_mode; + uint8_t secondary_count; + uint8_t local_ddr_size; + uint8_t remote_ddr_size; +} __packed; + +static scmi_channel_plat_info_t n1sdp_scmi_plat_info = { + .scmi_mbx_mem = N1SDP_SCMI_PAYLOAD_BASE, + .db_reg_addr = PLAT_CSS_MHU_BASE + CSS_SCMI_MHU_DB_REG_OFF, + .db_preserve_mask = 0xfffffffe, + .db_modify_mask = 0x1, + .ring_doorbell = &mhu_ring_doorbell +}; + +static struct gic600_multichip_data n1sdp_multichip_data __init = { + .rt_owner_base = PLAT_ARM_GICD_BASE, + .rt_owner = 0, + .chip_count = 1, + .chip_addrs = { + PLAT_ARM_GICD_BASE >> 16, + PLAT_ARM_GICD_BASE >> 16 + }, + .spi_ids = { + {32, 479}, + {512, 959} + } +}; + +static uintptr_t n1sdp_multichip_gicr_frames[3] = { + PLAT_ARM_GICR_BASE, + PLAT_ARM_GICR_BASE + PLAT_ARM_REMOTE_CHIP_OFFSET, + 0 +}; + +scmi_channel_plat_info_t *plat_css_get_scmi_info(int channel_id) +{ + return &n1sdp_scmi_plat_info; +} + +const plat_psci_ops_t *plat_arm_psci_override_pm_ops(plat_psci_ops_t *ops) +{ + return css_scmi_override_pm_ops(ops); +} + +/* + * N1SDP platform supports RDIMMs with ECC capability. To use the ECC + * capability, the entire DDR memory space has to be zeroed out before + * enabling the ECC bits in DMC620. Zeroing out several gigabytes of + * memory from SCP is quite time consuming so the following function + * is added to zero out the DDR memory from application processor which is + * much faster compared to SCP. Local DDR memory is zeroed out during BL2 + * stage. If remote chip is connected, it's DDR memory is zeroed out here. + */ + +void remote_dmc_ecc_setup(uint8_t remote_ddr_size) +{ + uint64_t remote_dram2_size; + + remote_dram2_size = (remote_ddr_size * 1024UL * 1024UL * 1024UL) - + N1SDP_REMOTE_DRAM1_SIZE; + /* multichip setup */ + INFO("Zeroing remote DDR memories\n"); + zero_normalmem((void *)N1SDP_REMOTE_DRAM1_BASE, + N1SDP_REMOTE_DRAM1_SIZE); + flush_dcache_range(N1SDP_REMOTE_DRAM1_BASE, N1SDP_REMOTE_DRAM1_SIZE); + zero_normalmem((void *)N1SDP_REMOTE_DRAM2_BASE, remote_dram2_size); + flush_dcache_range(N1SDP_REMOTE_DRAM2_BASE, remote_dram2_size); + + INFO("Enabling ECC on remote DMCs\n"); + /* Set DMCs to CONFIG state before writing ERR0CTLR0 register */ + mmio_write_32(N1SDP_REMOTE_DMC0_MEMC_CMD_REG, + N1SDP_DMC_MEMC_CMD_CONFIG); + mmio_write_32(N1SDP_REMOTE_DMC1_MEMC_CMD_REG, + N1SDP_DMC_MEMC_CMD_CONFIG); + + /* Enable ECC in DMCs */ + mmio_setbits_32(N1SDP_REMOTE_DMC0_ERR0CTLR0_REG, + N1SDP_DMC_ERR0CTLR0_ECC_EN); + mmio_setbits_32(N1SDP_REMOTE_DMC1_ERR0CTLR0_REG, + N1SDP_DMC_ERR0CTLR0_ECC_EN); + + /* Set DMCs to READY state */ + mmio_write_32(N1SDP_REMOTE_DMC0_MEMC_CMD_REG, N1SDP_DMC_MEMC_CMD_READY); + mmio_write_32(N1SDP_REMOTE_DMC1_MEMC_CMD_REG, N1SDP_DMC_MEMC_CMD_READY); +} + +void n1sdp_bl31_multichip_setup(void) +{ + plat_arm_override_gicr_frames(n1sdp_multichip_gicr_frames); + gic600_multichip_init(&n1sdp_multichip_data); +} + +void bl31_platform_setup(void) +{ + int ret; + struct n1sdp_plat_info plat_info; + + ret = sds_init(); + if (ret != SDS_OK) { + ERROR("SDS initialization failed\n"); + panic(); + } + + ret = sds_struct_read(N1SDP_SDS_PLATFORM_INFO_STRUCT_ID, + N1SDP_SDS_PLATFORM_INFO_OFFSET, + &plat_info, + N1SDP_SDS_PLATFORM_INFO_SIZE, + SDS_ACCESS_MODE_NON_CACHED); + if (ret != SDS_OK) { + ERROR("Error getting platform info from SDS\n"); + panic(); + } + /* Validate plat_info SDS */ + if ((plat_info.local_ddr_size == 0) + || (plat_info.local_ddr_size > N1SDP_MAX_DDR_CAPACITY_GB) + || (plat_info.remote_ddr_size > N1SDP_MAX_DDR_CAPACITY_GB) + || (plat_info.secondary_count > N1SDP_MAX_SECONDARY_COUNT)) { + ERROR("platform info SDS is corrupted\n"); + panic(); + } + + if (plat_info.multichip_mode) { + n1sdp_multichip_data.chip_count = plat_info.secondary_count + 1; + n1sdp_bl31_multichip_setup(); + } + arm_bl31_platform_setup(); + + /* Check if remote memory is present */ + if ((plat_info.multichip_mode) && (plat_info.remote_ddr_size != 0)) + remote_dmc_ecc_setup(plat_info.remote_ddr_size); +} |