diff options
Diffstat (limited to '')
| -rw-r--r-- | plat/intel/soc/common/socfpga_sip_svc_v2.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/plat/intel/soc/common/socfpga_sip_svc_v2.c b/plat/intel/soc/common/socfpga_sip_svc_v2.c new file mode 100644 index 0000000..791c714 --- /dev/null +++ b/plat/intel/soc/common/socfpga_sip_svc_v2.c @@ -0,0 +1,174 @@ +/* + * Copyright (c) 2022, Intel Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <common/debug.h> +#include <common/runtime_svc.h> +#include <lib/mmio.h> + +#include "socfpga_mailbox.h" +#include "socfpga_sip_svc.h" + +static uint32_t intel_v2_mbox_send_cmd(uint32_t req_header, + uint32_t *data, uint32_t data_size) +{ + uint32_t value; + uint32_t len; + + if ((data == NULL) || (data_size == 0)) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + if (data_size > (MBOX_INC_HEADER_MAX_WORD_SIZE * MBOX_WORD_BYTE)) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + if (!is_size_4_bytes_aligned(data_size)) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + /* Make sure client id align in SMC SiP V2 header and mailbox header */ + value = (req_header >> INTEL_SIP_SMC_HEADER_CID_OFFSET) & + INTEL_SIP_SMC_HEADER_CID_MASK; + + if (value != MBOX_RESP_CLIENT_ID(data[0])) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + /* Make sure job id align in SMC SiP V2 header and mailbox header */ + value = (req_header >> INTEL_SIP_SMC_HEADER_JOB_ID_OFFSET) & + INTEL_SIP_SMC_HEADER_JOB_ID_MASK; + + if (value != MBOX_RESP_JOB_ID(data[0])) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + /* + * Make sure data length align in SMC SiP V2 header and + * mailbox header + */ + len = (data_size / MBOX_WORD_BYTE) - 1; + + if (len != MBOX_RESP_LEN(data[0])) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + return mailbox_send_cmd_async_ext(data[0], &data[1], len); +} + +static uint32_t intel_v2_mbox_poll_resp(uint64_t req_header, + uint32_t *data, uint32_t *data_size, + uint64_t *resp_header) +{ + int status = 0; + uint32_t resp_len; + uint32_t job_id = 0; + uint32_t client_id = 0; + uint32_t version; + + if ((data == NULL) || (data_size == NULL) || (resp_header == NULL)) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + if (!is_size_4_bytes_aligned(*data_size)) { + return INTEL_SIP_SMC_STATUS_REJECTED; + } + + resp_len = (*data_size / MBOX_WORD_BYTE) - 1; + status = mailbox_read_response_async(&job_id, &data[0], &data[1], + &resp_len, 1); + + if (status == MBOX_BUSY) { + status = INTEL_SIP_SMC_STATUS_BUSY; + } else if (status == MBOX_NO_RESPONSE) { + status = INTEL_SIP_SMC_STATUS_NO_RESPONSE; + } else { + *data_size = 0; + + if (resp_len > 0) { + /* + * Fill in the final response length, + * the length include both mailbox header and payload + */ + *data_size = (resp_len + 1) * MBOX_WORD_BYTE; + + /* Extract the client id from mailbox header */ + client_id = MBOX_RESP_CLIENT_ID(data[0]); + } + + /* + * Extract SMC SiP V2 protocol version from + * SMC request header + */ + version = (req_header >> INTEL_SIP_SMC_HEADER_VERSION_OFFSET) & + INTEL_SIP_SMC_HEADER_VERSION_MASK; + + /* Fill in SMC SiP V2 protocol response header */ + *resp_header = 0; + *resp_header |= (((uint64_t)job_id) & + INTEL_SIP_SMC_HEADER_JOB_ID_MASK) << + INTEL_SIP_SMC_HEADER_JOB_ID_OFFSET; + *resp_header |= (((uint64_t)client_id) & + INTEL_SIP_SMC_HEADER_CID_MASK) << + INTEL_SIP_SMC_HEADER_CID_OFFSET; + *resp_header |= (((uint64_t)version) & + INTEL_SIP_SMC_HEADER_VERSION_MASK) << + INTEL_SIP_SMC_HEADER_VERSION_OFFSET; + } + + return status; +} + +uintptr_t sip_smc_handler_v2(uint32_t smc_fid, + u_register_t x1, + u_register_t x2, + u_register_t x3, + u_register_t x4, + void *cookie, + void *handle, + u_register_t flags) +{ + uint32_t retval = 0; + uint64_t retval64 = 0; + int status = INTEL_SIP_SMC_STATUS_OK; + + switch (smc_fid) { + case INTEL_SIP_SMC_V2_GET_SVC_VERSION: + SMC_RET4(handle, INTEL_SIP_SMC_STATUS_OK, x1, + SIP_SVC_VERSION_MAJOR, + SIP_SVC_VERSION_MINOR); + + case INTEL_SIP_SMC_V2_REG_READ: + status = intel_secure_reg_read(x2, &retval); + SMC_RET4(handle, status, x1, retval, x2); + + case INTEL_SIP_SMC_V2_REG_WRITE: + status = intel_secure_reg_write(x2, (uint32_t)x3, &retval); + SMC_RET4(handle, status, x1, retval, x2); + + case INTEL_SIP_SMC_V2_REG_UPDATE: + status = intel_secure_reg_update(x2, (uint32_t)x3, + (uint32_t)x4, &retval); + SMC_RET4(handle, status, x1, retval, x2); + + case INTEL_SIP_SMC_V2_HPS_SET_BRIDGES: + status = intel_hps_set_bridges(x2, x3); + SMC_RET2(handle, status, x1); + + case INTEL_SIP_SMC_V2_MAILBOX_SEND_COMMAND: + status = intel_v2_mbox_send_cmd(x1, (uint32_t *)x2, x3); + SMC_RET2(handle, status, x1); + + case INTEL_SIP_SMC_V2_MAILBOX_POLL_RESPONSE: + status = intel_v2_mbox_poll_resp(x1, (uint32_t *)x2, + (uint32_t *) &x3, &retval64); + SMC_RET4(handle, status, retval64, x2, x3); + + default: + ERROR("%s: unhandled SMC V2 (0x%x)\n", __func__, smc_fid); + SMC_RET1(handle, SMC_UNK); + } +} |