diff options
Diffstat (limited to 'plat/xilinx/common/pm_service')
| -rw-r--r-- | plat/xilinx/common/pm_service/pm_api_sys.c | 686 | ||||
| -rw-r--r-- | plat/xilinx/common/pm_service/pm_ipi.c | 353 | ||||
| -rw-r--r-- | plat/xilinx/common/pm_service/pm_svc_main.c | 449 |
3 files changed, 1488 insertions, 0 deletions
diff --git a/plat/xilinx/common/pm_service/pm_api_sys.c b/plat/xilinx/common/pm_service/pm_api_sys.c new file mode 100644 index 0000000..ffc39bb --- /dev/null +++ b/plat/xilinx/common/pm_service/pm_api_sys.c @@ -0,0 +1,686 @@ +/* + * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved. + * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/* + * Versal system level PM-API functions and communication with PMC via + * IPI interrupts + */ + +#include <drivers/arm/gic_common.h> +#include <lib/mmio.h> +#include <lib/utils.h> +#include <plat/common/platform.h> +#include <platform_def.h> +#include <pm_api_sys.h> +#include <pm_client.h> +#include <pm_common.h> +#include <pm_defs.h> +#include <pm_ipi.h> +#include "pm_svc_main.h" + +#define NUM_GICD_ISENABLER ((IRQ_MAX >> 5U) + 1U) + +/* default shutdown/reboot scope is system(2) */ +static uint32_t pm_shutdown_scope = XPM_SHUTDOWN_SUBTYPE_RST_SYSTEM; + +/** + * pm_get_shutdown_scope() - Get the currently set shutdown scope. + * + * Return: Shutdown scope value. + * + */ +uint32_t pm_get_shutdown_scope(void) +{ + return pm_shutdown_scope; +} + +/* PM API functions */ + +/** + * pm_client_set_wakeup_sources - Set all devices with enabled interrupts as + * wake sources in the XilPM. + * @node_id: Node id of processor. + * + */ +void pm_client_set_wakeup_sources(uint32_t node_id) +{ + uint32_t reg_num, device_id; + uint8_t pm_wakeup_nodes_set[XPM_NODEIDX_DEV_MAX] = {0U}; + uint32_t isenabler1 = PLAT_GICD_BASE_VALUE + GICD_ISENABLER + 4U; + + zeromem(&pm_wakeup_nodes_set, (u_register_t)sizeof(pm_wakeup_nodes_set)); + + for (reg_num = 0U; reg_num < NUM_GICD_ISENABLER; reg_num++) { + uint32_t base_irq = reg_num << ISENABLER_SHIFT; + uint32_t reg = mmio_read_32(isenabler1 + (reg_num << 2)); + + if (reg == 0U) { + continue; + } + + while (reg != 0U) { + enum pm_device_node_idx node_idx; + uint32_t idx, irq, lowest_set = reg & (-reg); + enum pm_ret_status ret; + + idx = (uint32_t)__builtin_ctz(lowest_set); + irq = base_irq + idx; + + if (irq > IRQ_MAX) { + break; + } + + node_idx = irq_to_pm_node_idx(irq); + reg &= ~lowest_set; + + if (node_idx > XPM_NODEIDX_DEV_MIN) { + if (pm_wakeup_nodes_set[node_idx] == 0U) { + /* Get device ID from node index */ + device_id = PERIPH_DEVID((uint32_t)node_idx); + ret = pm_set_wakeup_source(node_id, + device_id, 1U, + SECURE_FLAG); + pm_wakeup_nodes_set[node_idx] = (ret == PM_RET_SUCCESS) ? + 1U : 0U; + } + } + } + } +} + +/** + * pm_handle_eemi_call() - PM call for processor to send eemi payload. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * @x0: Arguments received per SMC64 standard. + * @x1: Arguments received per SMC64 standard. + * @x2: Arguments received per SMC64 standard. + * @x3: Arguments received per SMC64 standard. + * @x4: Arguments received per SMC64 standard. + * @x5: Arguments received per SMC64 standard. + * @result: Payload received from firmware. + * + * Return: PM_RET_SUCCESS on success or error code. + * + */ +enum pm_ret_status pm_handle_eemi_call(uint32_t flag, uint32_t x0, uint32_t x1, + uint32_t x2, uint32_t x3, uint32_t x4, + uint32_t x5, uint64_t *result) +{ + uint32_t payload[PAYLOAD_ARG_CNT] = {0}; + uint32_t module_id; + + module_id = (x0 & MODULE_ID_MASK) >> 8U; + + //default module id is for LIBPM + if (module_id == 0) { + module_id = LIBPM_MODULE_ID; + } + + PM_PACK_PAYLOAD6(payload, module_id, flag, x0, x1, x2, x3, x4, x5); + return pm_ipi_send_sync(primary_proc, payload, (uint32_t *)result, PAYLOAD_ARG_CNT); +} + +/** + * pm_self_suspend() - PM call for processor to suspend itself + * @nid: Node id of the processor or subsystem. + * @latency: Requested maximum wakeup latency (not supported). + * @state: Requested state. + * @address: Resume address. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This is a blocking call, it will return only once PMU has responded. + * On a wakeup, resume address will be automatically set by PMU. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_self_suspend(uint32_t nid, + uint32_t latency, + uint32_t state, + uintptr_t address, uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + uint32_t cpuid = plat_my_core_pos(); + const struct pm_proc *proc = pm_get_proc(cpuid); + + if (proc == NULL) { + WARN("Failed to get proc %d\n", cpuid); + return PM_RET_ERROR_INTERNAL; + } + + /* + * Do client specific suspend operations + * (e.g. set powerdown request bit) + */ + pm_client_suspend(proc, state); + + /* Send request to the PLM */ + PM_PACK_PAYLOAD6(payload, LIBPM_MODULE_ID, flag, PM_SELF_SUSPEND, + proc->node_id, latency, state, address, + (address >> 32)); + return pm_ipi_send_sync(proc, payload, NULL, 0); +} + +/** + * pm_abort_suspend() - PM call to announce that a prior suspend request + * is to be aborted. + * @reason: Reason for the abort. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * Calling PU expects the PMU to abort the initiated suspend procedure. + * This is a non-blocking call without any acknowledge. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_abort_suspend(enum pm_abort_reason reason, uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* + * Do client specific abort suspend operations + * (e.g. enable interrupts and clear powerdown request bit) + */ + pm_client_abort_suspend(); + + /* Send request to the PLM */ + PM_PACK_PAYLOAD3(payload, LIBPM_MODULE_ID, flag, PM_ABORT_SUSPEND, + reason, primary_proc->node_id); + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); +} + +/** + * pm_req_suspend() - PM call to request for another PU or subsystem to + * be suspended gracefully. + * @target: Node id of the targeted PU or subsystem. + * @ack: Flag to specify whether acknowledge is requested. + * @latency: Requested wakeup latency (not supported) + * @state: Requested state (not supported). + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_req_suspend(uint32_t target, uint8_t ack, + uint32_t latency, uint32_t state, + uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMU */ + PM_PACK_PAYLOAD4(payload, LIBPM_MODULE_ID, flag, PM_REQ_SUSPEND, target, + latency, state); + if (ack == IPI_BLOCKING) { + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); + } else { + return pm_ipi_send(primary_proc, payload); + } +} + +/** + * pm_req_wakeup() - PM call for processor to wake up selected processor + * or subsystem. + * @target: Device ID of the processor or subsystem to wake up. + * @set_address: Resume address presence indicator. + * 1 - resume address specified, 0 - otherwise. + * @address: Resume address. + * @ack: Flag to specify whether acknowledge requested. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This API function is either used to power up another APU core for SMP + * (by PSCI) or to power up an entirely different PU or subsystem, such + * as RPU0, RPU, or PL_CORE_xx. Resume address for the target PU will be + * automatically set by PMC. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_req_wakeup(uint32_t target, uint32_t set_address, + uintptr_t address, uint8_t ack, uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMC to perform the wake of the PU */ + PM_PACK_PAYLOAD5(payload, LIBPM_MODULE_ID, flag, PM_REQ_WAKEUP, target, + set_address, address, ack); + + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); +} + +/** + * pm_get_callbackdata() - Read from IPI response buffer. + * @data: array of PAYLOAD_ARG_CNT elements. + * @count: Number of values to return. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * @ack: 0 - Do not ack IPI after reading payload. + * 1 - Ack IPI after reading payload. + * + * Read value from ipi buffer response buffer. + * Return: Returns status, either success or error. + * + */ +enum pm_ret_status pm_get_callbackdata(uint32_t *data, size_t count, uint32_t flag, uint32_t ack) +{ + enum pm_ret_status ret = PM_RET_SUCCESS; + /* Return if interrupt is not from PMU */ + if (pm_ipi_irq_status(primary_proc) == 0) { + return ret; + } + + ret = pm_ipi_buff_read_callb(data, count); + + if (ack != 0U) { + pm_ipi_irq_clear(primary_proc); + } + + return ret; +} + +/** + * pm_pll_set_param() - Set PLL parameter. + * @clk_id: PLL clock ID. + * @param: PLL parameter ID. + * @value: Value to set for PLL parameter. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This API is deprecated and maintained here for backward compatibility. + * New use of this API should be avoided for versal platform. + * This API and its use cases will be removed for versal platform. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_pll_set_param(uint32_t clk_id, uint32_t param, + uint32_t value, uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMC */ + PM_PACK_PAYLOAD4(payload, LIBPM_MODULE_ID, flag, PM_PLL_SET_PARAMETER, + clk_id, param, value); + + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); +} + +/** + * pm_pll_get_param() - Get PLL parameter value. + * @clk_id: PLL clock ID. + * @param: PLL parameter ID. + * @value: Buffer to store PLL parameter value. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This API is deprecated and maintained here for backward compatibility. + * New use of this API should be avoided for versal platform. + * This API and its use cases will be removed for versal platform. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_pll_get_param(uint32_t clk_id, uint32_t param, + uint32_t *value, uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMC */ + PM_PACK_PAYLOAD3(payload, LIBPM_MODULE_ID, flag, PM_PLL_GET_PARAMETER, + clk_id, param); + + return pm_ipi_send_sync(primary_proc, payload, value, 1); +} + +/** + * pm_pll_set_mode() - Set PLL mode. + * @clk_id: PLL clock ID. + * @mode: PLL mode. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This API is deprecated and maintained here for backward compatibility. + * New use of this API should be avoided for versal platform. + * This API and its use cases will be removed for versal platform. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_pll_set_mode(uint32_t clk_id, uint32_t mode, + uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMC */ + PM_PACK_PAYLOAD3(payload, LIBPM_MODULE_ID, flag, PM_PLL_SET_MODE, + clk_id, mode); + + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); +} + +/** + * pm_pll_get_mode() - Get PLL mode. + * @clk_id: PLL clock ID. + * @mode: Buffer to store PLL mode. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This API is deprecated and maintained here for backward compatibility. + * New use of this API should be avoided for versal platform. + * This API and its use cases will be removed for versal platform. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_pll_get_mode(uint32_t clk_id, uint32_t *mode, + uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMC */ + PM_PACK_PAYLOAD2(payload, LIBPM_MODULE_ID, flag, PM_PLL_GET_MODE, + clk_id); + + return pm_ipi_send_sync(primary_proc, payload, mode, 1); +} + +/** + * pm_force_powerdown() - PM call to request for another PU or subsystem to + * be powered down forcefully. + * @target: Device ID of the PU node to be forced powered down. + * @ack: Flag to specify whether acknowledge is requested + * @flag: 0 - Call from secure source + * 1 - Call from non-secure source + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_force_powerdown(uint32_t target, uint8_t ack, + uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMC */ + PM_PACK_PAYLOAD3(payload, LIBPM_MODULE_ID, flag, PM_FORCE_POWERDOWN, + target, ack); + + if (ack == IPI_BLOCKING) { + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); + } else { + return pm_ipi_send(primary_proc, payload); + } +} + +/** + * pm_system_shutdown() - PM call to request a system shutdown or restart. + * @type: Shutdown or restart? 0=shutdown, 1=restart, 2=setscope. + * @subtype: Scope: 0=APU-subsystem, 1=PS, 2=system. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_system_shutdown(uint32_t type, uint32_t subtype, + uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + if (type == XPM_SHUTDOWN_TYPE_SETSCOPE_ONLY) { + /* Setting scope for subsequent PSCI reboot or shutdown */ + pm_shutdown_scope = subtype; + return PM_RET_SUCCESS; + } + + /* Send request to the PMC */ + PM_PACK_PAYLOAD3(payload, LIBPM_MODULE_ID, flag, PM_SYSTEM_SHUTDOWN, + type, subtype); + + return pm_ipi_send_non_blocking(primary_proc, payload); +} + +/** + * pm_query_data() - PM API for querying firmware data. + * @qid: The type of data to query. + * @arg1: Argument 1 to requested query data call. + * @arg2: Argument 2 to requested query data call. + * @arg3: Argument 3 to requested query data call. + * @data: Returned output data. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This API is deprecated and maintained here for backward compatibility. + * New use of this API should be avoided for versal platform. + * This API and its use cases will be removed for versal platform. + * + * Return: 0 if success else non-zero error code of type + * enum pm_ret_status. + * + */ +enum pm_ret_status pm_query_data(uint32_t qid, uint32_t arg1, uint32_t arg2, + uint32_t arg3, uint32_t *data, uint32_t flag) +{ + uint32_t ret; + uint32_t version[PAYLOAD_ARG_CNT] = {0}; + uint32_t payload[PAYLOAD_ARG_CNT]; + uint32_t fw_api_version; + + /* Send request to the PMC */ + PM_PACK_PAYLOAD5(payload, LIBPM_MODULE_ID, flag, PM_QUERY_DATA, qid, + arg1, arg2, arg3); + + ret = pm_feature_check((uint32_t)PM_QUERY_DATA, &version[0], flag); + if (ret == PM_RET_SUCCESS) { + fw_api_version = version[0] & 0xFFFFU; + if ((fw_api_version == 2U) && + ((qid == XPM_QID_CLOCK_GET_NAME) || + (qid == XPM_QID_PINCTRL_GET_FUNCTION_NAME))) { + ret = pm_ipi_send_sync(primary_proc, payload, data, PAYLOAD_ARG_CNT); + if (ret == PM_RET_SUCCESS) { + ret = data[0]; + data[0] = data[1]; + data[1] = data[2]; + data[2] = data[3]; + } + } else { + ret = pm_ipi_send_sync(primary_proc, payload, data, PAYLOAD_ARG_CNT); + } + } + return ret; +} +/** + * pm_api_ioctl() - PM IOCTL API for device control and configs. + * @device_id: Device ID. + * @ioctl_id: ID of the requested IOCTL. + * @arg1: Argument 1 to requested IOCTL call. + * @arg2: Argument 2 to requested IOCTL call. + * @arg3: Argument 3 to requested IOCTL call. + * @value: Returned output value. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * This API is deprecated and maintained here for backward compatibility. + * New use of this API should be avoided for versal platform. + * This API and its use cases will be removed for versal platform. + * + * This function calls IOCTL to firmware for device control and configuration. + * + * Return: Returns status, either 0 on success or non-zero error code + * of type enum pm_ret_status. + * + */ +enum pm_ret_status pm_api_ioctl(uint32_t device_id, uint32_t ioctl_id, + uint32_t arg1, uint32_t arg2, uint32_t arg3, + uint32_t *value, uint32_t flag) +{ + enum pm_ret_status ret; + + switch (ioctl_id) { + case IOCTL_SET_PLL_FRAC_MODE: + ret = pm_pll_set_mode(arg1, arg2, flag); + break; + case IOCTL_GET_PLL_FRAC_MODE: + ret = pm_pll_get_mode(arg1, value, flag); + break; + case IOCTL_SET_PLL_FRAC_DATA: + ret = pm_pll_set_param(arg1, (uint32_t)PM_PLL_PARAM_DATA, arg2, flag); + break; + case IOCTL_GET_PLL_FRAC_DATA: + ret = pm_pll_get_param(arg1, (uint32_t)PM_PLL_PARAM_DATA, value, flag); + break; + case IOCTL_SET_SGI: + /* Get the sgi number */ + ret = pm_register_sgi(arg1, arg2); + if (ret != 0) { + return PM_RET_ERROR_ARGS; + } + ret = PM_RET_SUCCESS; + break; + default: + return PM_RET_ERROR_NOTSUPPORTED; + } + + return ret; +} + +/** + * pm_set_wakeup_source() - PM call to specify the wakeup source while + * suspended. + * @target: Device id of the targeted PU or subsystem + * @wkup_device: Device id of the wakeup peripheral + * @enable: Enable or disable the specified peripheral as wake source + * @flag: 0 - Call from secure source + * 1 - Call from non-secure source + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_set_wakeup_source(uint32_t target, uint32_t wkup_device, + uint8_t enable, uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + PM_PACK_PAYLOAD4(payload, LIBPM_MODULE_ID, flag, PM_SET_WAKEUP_SOURCE, + target, wkup_device, enable); + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); +} + +/** + * pm_feature_check() - Returns the supported API version if supported. + * @api_id: API ID to check. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * @ret_payload: pointer to array of PAYLOAD_ARG_CNT number of + * words Returned supported API version and bitmasks + * for IOCTL and QUERY ID + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_feature_check(uint32_t api_id, uint32_t *ret_payload, + uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + uint32_t module_id; + + /* Return version of API which are implemented in TF-A only */ + switch (api_id) { + case PM_GET_CALLBACK_DATA: + case PM_GET_TRUSTZONE_VERSION: + ret_payload[0] = PM_API_VERSION_2; + return PM_RET_SUCCESS; + case TF_A_PM_REGISTER_SGI: + ret_payload[0] = PM_API_BASE_VERSION; + return PM_RET_SUCCESS; + default: + break; + } + + module_id = (api_id & MODULE_ID_MASK) >> 8U; + + /* + * feature check should be done only for LIBPM module + * If module_id is 0, then we consider it LIBPM module as default id + */ + if ((module_id > 0) && (module_id != LIBPM_MODULE_ID)) { + return PM_RET_SUCCESS; + } + + PM_PACK_PAYLOAD2(payload, LIBPM_MODULE_ID, flag, + PM_FEATURE_CHECK, api_id); + return pm_ipi_send_sync(primary_proc, payload, ret_payload, PAYLOAD_ARG_CNT); +} + +/** + * pm_load_pdi() - Load the PDI. This function provides support to load + * PDI from linux. + * + * @src: Source device of pdi(DDR, OCM, SD etc). + * @address_low: lower 32-bit Linear memory space address. + * @address_high: higher 32-bit Linear memory space address. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_load_pdi(uint32_t src, uint32_t address_low, + uint32_t address_high, uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMU */ + PM_PACK_PAYLOAD4(payload, LOADER_MODULE_ID, flag, PM_LOAD_PDI, src, + address_high, address_low); + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); +} + +/** + * pm_register_notifier() - PM call to register a subsystem to be notified + * about the device event. + * @device_id: Device ID for the Node to which the event is related. + * @event: Event in question. + * @wake: Wake subsystem upon capturing the event if value 1. + * @enable: Enable the registration for value 1, disable for value 0. + * @flag: 0 - Call from secure source. + * 1 - Call from non-secure source. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_register_notifier(uint32_t device_id, uint32_t event, + uint32_t wake, uint32_t enable, + uint32_t flag) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + /* Send request to the PMC */ + PM_PACK_PAYLOAD5(payload, LIBPM_MODULE_ID, flag, PM_REGISTER_NOTIFIER, + device_id, event, wake, enable); + + return pm_ipi_send_sync(primary_proc, payload, NULL, 0); +} + +/** + * pm_get_chipid() - Read silicon ID registers. + * @value: Buffer for two 32bit words. + * + * Return: Returns status, either success or error+reason and, + * optionally, @value. + */ +enum pm_ret_status pm_get_chipid(uint32_t *value) +{ + uint32_t payload[PAYLOAD_ARG_CNT]; + + PM_PACK_PAYLOAD1(payload, LIBPM_MODULE_ID, SECURE_FLAG, PM_GET_CHIPID); + + return pm_ipi_send_sync(primary_proc, payload, value, 2); +} diff --git a/plat/xilinx/common/pm_service/pm_ipi.c b/plat/xilinx/common/pm_service/pm_ipi.c new file mode 100644 index 0000000..56567dd --- /dev/null +++ b/plat/xilinx/common/pm_service/pm_ipi.c @@ -0,0 +1,353 @@ +/* + * Copyright (c) 2013-2020, Arm Limited and Contributors. All rights reserved. + * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved. + * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + + +#include <arch_helpers.h> +#include <lib/bakery_lock.h> +#include <lib/mmio.h> +#include <lib/spinlock.h> +#include <plat/common/platform.h> + +#include <ipi.h> +#include <plat_ipi.h> +#include <plat_private.h> +#include "pm_defs.h" +#include "pm_ipi.h" + +#define ERROR_CODE_MASK (0xFFFFU) +#define PM_OFFSET (0U) + +/* + * ARM v8.2, the cache will turn off automatically when cpu + * power down. Therefore, there is no doubt to use the spin_lock here. + */ +#if !HW_ASSISTED_COHERENCY +DEFINE_BAKERY_LOCK(pm_secure_lock); +static inline void pm_ipi_lock_get(void) +{ + bakery_lock_get(&pm_secure_lock); +} + +static inline void pm_ipi_lock_release(void) +{ + bakery_lock_release(&pm_secure_lock); +} +#else +spinlock_t pm_secure_lock; +static inline void pm_ipi_lock_get(void) +{ + spin_lock(&pm_secure_lock); +} + +static inline void pm_ipi_lock_release(void) +{ + spin_unlock(&pm_secure_lock); +} +#endif + +/** + * pm_ipi_init() - Initialize IPI peripheral for communication with + * remote processor. + * @proc: Pointer to the processor who is initiating request. + * + * Return: On success, the initialization function must return 0. + * Any other return value will cause the framework to ignore + * the service. + * + * Called from pm_setup initialization function. + */ +void pm_ipi_init(const struct pm_proc *proc) +{ + ipi_mb_open(proc->ipi->local_ipi_id, proc->ipi->remote_ipi_id); +} + +/** + * pm_ipi_send_common() - Sends IPI request to the remote processor. + * @proc: Pointer to the processor who is initiating request. + * @payload: API id and call arguments to be written in IPI buffer. + * @is_blocking: if to trigger the notification in blocking mode or not. + * + * Send an IPI request to the power controller. Caller needs to hold + * the 'pm_secure_lock' lock. + * + * Return: Returns status, either success or error+reason. + * + */ +static enum pm_ret_status pm_ipi_send_common(const struct pm_proc *proc, + uint32_t payload[PAYLOAD_ARG_CNT], + uint32_t is_blocking) +{ + uint32_t offset = PM_OFFSET; + uintptr_t buffer_base = proc->ipi->buffer_base + + IPI_BUFFER_TARGET_REMOTE_OFFSET + + IPI_BUFFER_REQ_OFFSET; +#if IPI_CRC_CHECK + payload[PAYLOAD_CRC_POS] = calculate_crc(payload, IPI_W0_TO_W6_SIZE); +#endif + + /* Write payload into IPI buffer */ + for (size_t i = 0; i < PAYLOAD_ARG_CNT; i++) { + mmio_write_32(buffer_base + offset, payload[i]); + offset += PAYLOAD_ARG_SIZE; + } + + /* Generate IPI to remote processor */ + ipi_mb_notify(proc->ipi->local_ipi_id, proc->ipi->remote_ipi_id, + is_blocking); + + return PM_RET_SUCCESS; +} + +/** + * pm_ipi_send_non_blocking() - Sends IPI request to the remote processor + * without blocking notification. + * @proc: Pointer to the processor who is initiating request. + * @payload: API id and call arguments to be written in IPI buffer. + * + * Send an IPI request to the power controller. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_ipi_send_non_blocking(const struct pm_proc *proc, + uint32_t payload[PAYLOAD_ARG_CNT]) +{ + enum pm_ret_status ret; + + pm_ipi_lock_get(); + + ret = pm_ipi_send_common(proc, payload, IPI_NON_BLOCKING); + + pm_ipi_lock_release(); + + return ret; +} + +/** + * pm_ipi_send() - Sends IPI request to the remote processor. + * @proc: Pointer to the processor who is initiating request. + * @payload: API id and call arguments to be written in IPI buffer. + * + * Send an IPI request to the power controller. + * + * Return: Returns status, either success or error+reason. + * + */ +enum pm_ret_status pm_ipi_send(const struct pm_proc *proc, + uint32_t payload[PAYLOAD_ARG_CNT]) +{ + enum pm_ret_status ret; + + pm_ipi_lock_get(); + + ret = pm_ipi_send_common(proc, payload, IPI_BLOCKING); + + pm_ipi_lock_release(); + + return ret; +} + + +/** + * pm_ipi_buff_read() - Reads IPI response after remote processor has handled + * interrupt. + * @proc: Pointer to the processor who is waiting and reading response. + * @value: Used to return value from IPI buffer element (optional). + * @count: Number of values to return in @value. + * + * Return: Returns status, either success or error+reason. + * + */ +static enum pm_ret_status pm_ipi_buff_read(const struct pm_proc *proc, + uint32_t *value, size_t count) +{ + size_t i; + enum pm_ret_status ret; +#if IPI_CRC_CHECK + uint32_t *payload_ptr = value; + size_t j; + uint32_t response_payload[PAYLOAD_ARG_CNT]; +#endif + uintptr_t buffer_base = proc->ipi->buffer_base + + IPI_BUFFER_TARGET_REMOTE_OFFSET + + IPI_BUFFER_RESP_OFFSET; + + /* + * Read response from IPI buffer + * buf-0: success or error+reason + * buf-1: value + * buf-2: unused + * buf-3: unused + */ + for (i = 1; i <= count; i++) { + *value = mmio_read_32(buffer_base + (i * PAYLOAD_ARG_SIZE)); + value++; + } + + ret = mmio_read_32(buffer_base); +#if IPI_CRC_CHECK + for (j = 0; j < PAYLOAD_ARG_CNT; j++) { + response_payload[j] = mmio_read_32(buffer_base + + (j * PAYLOAD_ARG_SIZE)); + } + + if (response_payload[PAYLOAD_CRC_POS] != + calculate_crc(response_payload, IPI_W0_TO_W6_SIZE)) { + NOTICE("ERROR in CRC response payload value:0x%x\n", + response_payload[PAYLOAD_CRC_POS]); + ret = PM_RET_ERROR_INVALID_CRC; + /* Payload data is invalid as CRC validation failed + * Clear the payload to avoid leakage of data to upper layers + */ + memset(payload_ptr, 0, count); + } +#endif + + return ret; +} + +/** + * pm_ipi_buff_read_callb() - Callback function that reads value from + * ipi response buffer. + * @value: Used to return value from IPI buffer element. + * @count: Number of values to return in @value. + * + * This callback function fills requested data in @value from ipi response + * buffer. + * + * Return: Returns status, either success or error. + * + */ +enum pm_ret_status pm_ipi_buff_read_callb(uint32_t *value, size_t count) +{ + size_t i; +#if IPI_CRC_CHECK + uint32_t *payload_ptr = value; + size_t j; + unsigned int response_payload[PAYLOAD_ARG_CNT] = {0}; +#endif + uintptr_t buffer_base = IPI_BUFFER_REMOTE_BASE + + IPI_BUFFER_TARGET_LOCAL_OFFSET + + IPI_BUFFER_REQ_OFFSET; + enum pm_ret_status ret = PM_RET_SUCCESS; + + if (count > IPI_BUFFER_MAX_WORDS) { + count = IPI_BUFFER_MAX_WORDS; + } + + for (i = 0; i <= count; i++) { + *value = mmio_read_32(buffer_base + (i * PAYLOAD_ARG_SIZE)); + value++; + } +#if IPI_CRC_CHECK + for (j = 0; j < PAYLOAD_ARG_CNT; j++) { + response_payload[j] = mmio_read_32(buffer_base + + (j * PAYLOAD_ARG_SIZE)); + } + + if (response_payload[PAYLOAD_CRC_POS] != + calculate_crc(response_payload, IPI_W0_TO_W6_SIZE)) { + NOTICE("ERROR in CRC response payload value:0x%x\n", + response_payload[PAYLOAD_CRC_POS]); + ret = PM_RET_ERROR_INVALID_CRC; + /* Payload data is invalid as CRC validation failed + * Clear the payload to avoid leakage of data to upper layers + */ + memset(payload_ptr, 0, count); + } +#endif + return ret; +} + +/** + * pm_ipi_send_sync() - Sends IPI request to the remote processor. + * @proc: Pointer to the processor who is initiating request. + * @payload: API id and call arguments to be written in IPI buffer. + * @value: Used to return value from IPI buffer element (optional). + * @count: Number of values to return in @value. + * + * Send an IPI request to the power controller and wait for it to be handled. + * + * Return: Returns status, either success or error+reason and, optionally, + * @value. + * + */ +enum pm_ret_status pm_ipi_send_sync(const struct pm_proc *proc, + uint32_t payload[PAYLOAD_ARG_CNT], + uint32_t *value, size_t count) +{ + enum pm_ret_status ret; + + pm_ipi_lock_get(); + + ret = pm_ipi_send_common(proc, payload, IPI_BLOCKING); + if (ret != PM_RET_SUCCESS) { + goto unlock; + } + + ret = ERROR_CODE_MASK & (pm_ipi_buff_read(proc, value, count)); + +unlock: + pm_ipi_lock_release(); + + return ret; +} + +void pm_ipi_irq_enable(const struct pm_proc *proc) +{ + ipi_mb_enable_irq(proc->ipi->local_ipi_id, proc->ipi->remote_ipi_id); +} + +void pm_ipi_irq_clear(const struct pm_proc *proc) +{ + ipi_mb_ack(proc->ipi->local_ipi_id, proc->ipi->remote_ipi_id); +} + +uint32_t pm_ipi_irq_status(const struct pm_proc *proc) +{ + int32_t ret; + + ret = ipi_mb_enquire_status(proc->ipi->local_ipi_id, + proc->ipi->remote_ipi_id); + if (ret & IPI_MB_STATUS_RECV_PENDING) { + return 1; + } else { + return 0; + } +} + +#if IPI_CRC_CHECK +uint32_t calculate_crc(uint32_t payload[PAYLOAD_ARG_CNT], uint32_t bufsize) +{ + uint32_t crcinit = CRC_INIT_VALUE; + uint32_t order = CRC_ORDER; + uint32_t polynom = CRC_POLYNOM; + uint32_t i, j, c, bit, datain, crcmask, crchighbit; + uint32_t crc = crcinit; + + crcmask = ((uint32_t)((1U << (order - 1U)) - 1U) << 1U) | 1U; + crchighbit = (uint32_t)(1U << (order - 1U)); + + for (i = 0U; i < bufsize; i++) { + datain = mmio_read_8((unsigned long)payload + i); + c = datain; + j = 0x80U; + while (j != 0U) { + bit = crc & crchighbit; + crc <<= 1U; + if (0U != (c & j)) + bit ^= crchighbit; + if (bit != 0U) + crc ^= polynom; + j >>= 1U; + } + crc &= crcmask; + } + return crc; +} +#endif diff --git a/plat/xilinx/common/pm_service/pm_svc_main.c b/plat/xilinx/common/pm_service/pm_svc_main.c new file mode 100644 index 0000000..1e5808c --- /dev/null +++ b/plat/xilinx/common/pm_service/pm_svc_main.c @@ -0,0 +1,449 @@ +/* + * Copyright (c) 2019-2022, Xilinx, Inc. All rights reserved. + * Copyright (c) 2022-2023, Advanced Micro Devices, Inc. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/* + * Top-level SMC handler for Versal power management calls and + * IPI setup functions for communication with PMC. + */ + +#include <errno.h> +#include <stdbool.h> + +#include "../drivers/arm/gic/v3/gicv3_private.h" + +#include <common/runtime_svc.h> +#include <drivers/arm/gicv3.h> +#include <plat/common/platform.h> + +#include <plat_private.h> +#include "pm_api_sys.h" +#include "pm_client.h" +#include "pm_ipi.h" +#include "pm_svc_main.h" + +#define MODE 0x80000000U + +#define XSCUGIC_SGIR_EL1_INITID_SHIFT 24U +#define INVALID_SGI 0xFFU +#define PM_INIT_SUSPEND_CB (30U) +#define PM_NOTIFY_CB (32U) +DEFINE_RENAME_SYSREG_RW_FUNCS(icc_asgi1r_el1, S3_0_C12_C11_6) + +/* pm_up = true - UP, pm_up = false - DOWN */ +static bool pm_up; +static uint32_t sgi = (uint32_t)INVALID_SGI; + +static void notify_os(void) +{ + int32_t cpu; + uint32_t reg; + + cpu = plat_my_core_pos() + 1U; + + reg = (cpu | (sgi << XSCUGIC_SGIR_EL1_INITID_SHIFT)); + write_icc_asgi1r_el1(reg); +} + +static uint64_t ipi_fiq_handler(uint32_t id, uint32_t flags, void *handle, + void *cookie) +{ + uint32_t payload[4] = {0}; + enum pm_ret_status ret; + + VERBOSE("Received IPI FIQ from firmware\n"); + + (void)plat_ic_acknowledge_interrupt(); + + ret = pm_get_callbackdata(payload, ARRAY_SIZE(payload), 0, 0); + if (ret != PM_RET_SUCCESS) { + payload[0] = ret; + } + + switch (payload[0]) { + case PM_INIT_SUSPEND_CB: + case PM_NOTIFY_CB: + if (sgi != INVALID_SGI) { + notify_os(); + } + break; + case PM_RET_ERROR_INVALID_CRC: + pm_ipi_irq_clear(primary_proc); + WARN("Invalid CRC in the payload\n"); + break; + + default: + pm_ipi_irq_clear(primary_proc); + WARN("Invalid IPI payload\n"); + break; + } + + /* Clear FIQ */ + plat_ic_end_of_interrupt(id); + + return 0; +} + +/** + * pm_register_sgi() - PM register the IPI interrupt. + * @sgi_num: SGI number to be used for communication. + * @reset: Reset to invalid SGI when reset=1. + * + * Return: On success, the initialization function must return 0. + * Any other return value will cause the framework to ignore + * the service. + * + * Update the SGI number to be used. + * + */ +int32_t pm_register_sgi(uint32_t sgi_num, uint32_t reset) +{ + if (reset == 1U) { + sgi = INVALID_SGI; + return 0; + } + + if (sgi != INVALID_SGI) { + return -EBUSY; + } + + if (sgi_num >= GICV3_MAX_SGI_TARGETS) { + return -EINVAL; + } + + sgi = (uint32_t)sgi_num; + return 0; +} + +/** + * pm_setup() - PM service setup. + * + * Return: On success, the initialization function must return 0. + * Any other return value will cause the framework to ignore + * the service. + * + * Initialization functions for Versal power management for + * communicaton with PMC. + * + * Called from sip_svc_setup initialization function with the + * rt_svc_init signature. + * + */ +int32_t pm_setup(void) +{ + int32_t ret = 0; + + pm_ipi_init(primary_proc); + pm_up = true; + + /* + * Enable IPI IRQ + * assume the rich OS is OK to handle callback IRQs now. + * Even if we were wrong, it would not enable the IRQ in + * the GIC. + */ + pm_ipi_irq_enable(primary_proc); + + ret = request_intr_type_el3(PLAT_VERSAL_IPI_IRQ, ipi_fiq_handler); + if (ret != 0) { + WARN("BL31: registering IPI interrupt failed\n"); + } + + gicd_write_irouter(gicv3_driver_data->gicd_base, PLAT_VERSAL_IPI_IRQ, MODE); + return ret; +} + +/** + * eemi_for_compatibility() - EEMI calls handler for deprecated calls. + * @api_id: identifier for the API being called. + * @pm_arg: pointer to the argument data for the API call. + * @handle: Pointer to caller's context structure. + * @security_flag: SECURE_FLAG or NON_SECURE_FLAG. + * + * Return: If EEMI API found then, uintptr_t type address, else 0. + * + * Some EEMI API's use case needs to be changed in Linux driver, so they + * can take advantage of common EEMI handler in TF-A. As of now the old + * implementation of these APIs are required to maintain backward compatibility + * until their use case in linux driver changes. + * + */ +static uintptr_t eemi_for_compatibility(uint32_t api_id, uint32_t *pm_arg, + void *handle, uint32_t security_flag) +{ + enum pm_ret_status ret; + + switch (api_id) { + + case (uint32_t)PM_IOCTL: + { + uint32_t value = 0U; + + ret = pm_api_ioctl(pm_arg[0], pm_arg[1], pm_arg[2], + pm_arg[3], pm_arg[4], + &value, security_flag); + if (ret == PM_RET_ERROR_NOTSUPPORTED) + return (uintptr_t)0; + + SMC_RET1(handle, (uint64_t)ret | ((uint64_t)value) << 32U); + } + + case (uint32_t)PM_QUERY_DATA: + { + uint32_t data[PAYLOAD_ARG_CNT] = { 0 }; + + ret = pm_query_data(pm_arg[0], pm_arg[1], pm_arg[2], + pm_arg[3], data, security_flag); + + SMC_RET2(handle, (uint64_t)ret | ((uint64_t)data[0] << 32U), + (uint64_t)data[1] | ((uint64_t)data[2] << 32U)); + } + + case (uint32_t)PM_FEATURE_CHECK: + { + uint32_t result[PAYLOAD_ARG_CNT] = {0U}; + + ret = pm_feature_check(pm_arg[0], result, security_flag); + SMC_RET2(handle, (uint64_t)ret | ((uint64_t)result[0] << 32U), + (uint64_t)result[1] | ((uint64_t)result[2] << 32U)); + } + + case PM_LOAD_PDI: + { + ret = pm_load_pdi(pm_arg[0], pm_arg[1], pm_arg[2], + security_flag); + SMC_RET1(handle, (uint64_t)ret); + } + + default: + return (uintptr_t)0; + } +} + +/** + * eemi_psci_debugfs_handler() - EEMI API invoked from PSCI. + * @api_id: identifier for the API being called. + * @pm_arg: pointer to the argument data for the API call. + * @handle: Pointer to caller's context structure. + * @security_flag: SECURE_FLAG or NON_SECURE_FLAG. + * + * These EEMI APIs performs CPU specific power management tasks. + * These EEMI APIs are invoked either from PSCI or from debugfs in kernel. + * These calls require CPU specific processing before sending IPI request to + * Platform Management Controller. For example enable/disable CPU specific + * interrupts. This requires separate handler for these calls and may not be + * handled using common eemi handler. + * + * Return: If EEMI API found then, uintptr_t type address, else 0. + * + */ +static uintptr_t eemi_psci_debugfs_handler(uint32_t api_id, uint32_t *pm_arg, + void *handle, uint32_t security_flag) +{ + enum pm_ret_status ret; + + switch (api_id) { + + case (uint32_t)PM_SELF_SUSPEND: + ret = pm_self_suspend(pm_arg[0], pm_arg[1], pm_arg[2], + pm_arg[3], security_flag); + SMC_RET1(handle, (u_register_t)ret); + + case (uint32_t)PM_FORCE_POWERDOWN: + ret = pm_force_powerdown(pm_arg[0], pm_arg[1], security_flag); + SMC_RET1(handle, (u_register_t)ret); + + case (uint32_t)PM_REQ_SUSPEND: + ret = pm_req_suspend(pm_arg[0], pm_arg[1], pm_arg[2], + pm_arg[3], security_flag); + SMC_RET1(handle, (u_register_t)ret); + + case (uint32_t)PM_ABORT_SUSPEND: + ret = pm_abort_suspend(pm_arg[0], security_flag); + SMC_RET1(handle, (u_register_t)ret); + + case (uint32_t)PM_SYSTEM_SHUTDOWN: + ret = pm_system_shutdown(pm_arg[0], pm_arg[1], security_flag); + SMC_RET1(handle, (u_register_t)ret); + + default: + return (uintptr_t)0; + } +} + +/** + * TF_A_specific_handler() - SMC handler for TF-A specific functionality. + * @api_id: identifier for the API being called. + * @pm_arg: pointer to the argument data for the API call. + * @handle: Pointer to caller's context structure. + * @security_flag: SECURE_FLAG or NON_SECURE_FLAG. + * + * These EEMI calls performs functionality that does not require + * IPI transaction. The handler ends in TF-A and returns requested data to + * kernel from TF-A. + * + * Return: If TF-A specific API found then, uintptr_t type address, else 0 + * + */ +static uintptr_t TF_A_specific_handler(uint32_t api_id, uint32_t *pm_arg, + void *handle, uint32_t security_flag) +{ + switch (api_id) { + + case TF_A_PM_REGISTER_SGI: + { + int32_t ret; + + ret = pm_register_sgi(pm_arg[0], pm_arg[1]); + if (ret != 0) { + SMC_RET1(handle, (uint32_t)PM_RET_ERROR_ARGS); + } + + SMC_RET1(handle, (uint32_t)PM_RET_SUCCESS); + } + + case PM_GET_CALLBACK_DATA: + { + uint32_t result[4] = {0}; + enum pm_ret_status ret; + + ret = pm_get_callbackdata(result, ARRAY_SIZE(result), security_flag, 1U); + if (ret != 0) { + result[0] = ret; + } + + SMC_RET2(handle, + (uint64_t)result[0] | ((uint64_t)result[1] << 32U), + (uint64_t)result[2] | ((uint64_t)result[3] << 32U)); + } + + case PM_GET_TRUSTZONE_VERSION: + SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS | + ((uint64_t)TZ_VERSION << 32U)); + + default: + return (uintptr_t)0; + } +} + +/** + * eemi_handler() - Prepare EEMI payload and perform IPI transaction. + * @api_id: identifier for the API being called. + * @pm_arg: pointer to the argument data for the API call. + * @handle: Pointer to caller's context structure. + * @security_flag: SECURE_FLAG or NON_SECURE_FLAG. + * + * EEMI - Embedded Energy Management Interface is Xilinx proprietary protocol + * to allow communication between power management controller and different + * processing clusters. + * + * This handler prepares EEMI protocol payload received from kernel and performs + * IPI transaction. + * + * Return: If EEMI API found then, uintptr_t type address, else 0 + * + */ +static uintptr_t eemi_handler(uint32_t api_id, uint32_t *pm_arg, + void *handle, uint32_t security_flag) +{ + enum pm_ret_status ret; + uint32_t buf[PAYLOAD_ARG_CNT] = {0}; + + ret = pm_handle_eemi_call(security_flag, api_id, pm_arg[0], pm_arg[1], + pm_arg[2], pm_arg[3], pm_arg[4], + (uint64_t *)buf); + /* + * Two IOCTLs, to get clock name and pinctrl name of pm_query_data API + * receives 5 words of respoonse from firmware. Currently linux driver can + * receive only 4 words from TF-A. So, this needs to be handled separately + * than other eemi calls. + */ + if (api_id == (uint32_t)PM_QUERY_DATA) { + if ((pm_arg[0] == XPM_QID_CLOCK_GET_NAME || + pm_arg[0] == XPM_QID_PINCTRL_GET_FUNCTION_NAME) && + ret == PM_RET_SUCCESS) { + SMC_RET2(handle, (uint64_t)buf[0] | ((uint64_t)buf[1] << 32U), + (uint64_t)buf[2] | ((uint64_t)buf[3] << 32U)); + } + } + + SMC_RET2(handle, (uint64_t)ret | ((uint64_t)buf[0] << 32U), + (uint64_t)buf[1] | ((uint64_t)buf[2] << 32U)); +} + +/** + * pm_smc_handler() - SMC handler for PM-API calls coming from EL1/EL2. + * @smc_fid: Function Identifier. + * @x1: SMC64 Arguments from kernel. + * @x2: SMC64 Arguments from kernel. + * @x3: SMC64 Arguments from kernel (upper 32-bits). + * @x4: Unused. + * @cookie: Unused. + * @handle: Pointer to caller's context structure. + * @flags: SECURE_FLAG or NON_SECURE_FLAG. + * + * Return: Unused. + * + * Determines that smc_fid is valid and supported PM SMC Function ID from the + * list of pm_api_ids, otherwise completes the request with + * the unknown SMC Function ID. + * + * The SMC calls for PM service are forwarded from SIP Service SMC handler + * function with rt_svc_handle signature. + * + */ +uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3, + uint64_t x4, const void *cookie, void *handle, uint64_t flags) +{ + uintptr_t ret; + uint32_t pm_arg[PAYLOAD_ARG_CNT] = {0}; + uint32_t security_flag = NON_SECURE_FLAG; + uint32_t api_id; + bool status = false, status_tmp = false; + + /* Handle case where PM wasn't initialized properly */ + if (pm_up == false) { + SMC_RET1(handle, SMC_UNK); + } + + /* + * Mark BIT24 payload (i.e 1st bit of pm_arg[3] ) as secure (0) + * if smc called is secure + * + * Add redundant macro call to immune the code from glitches + */ + SECURE_REDUNDANT_CALL(status, status_tmp, is_caller_secure, flags); + if ((status != false) && (status_tmp != false)) { + security_flag = SECURE_FLAG; + } + + pm_arg[0] = (uint32_t)x1; + pm_arg[1] = (uint32_t)(x1 >> 32U); + pm_arg[2] = (uint32_t)x2; + pm_arg[3] = (uint32_t)(x2 >> 32U); + pm_arg[4] = (uint32_t)x3; + (void)(x4); + api_id = smc_fid & FUNCID_NUM_MASK; + + ret = eemi_for_compatibility(api_id, pm_arg, handle, security_flag); + if (ret != (uintptr_t)0) { + return ret; + } + + ret = eemi_psci_debugfs_handler(api_id, pm_arg, handle, flags); + if (ret != (uintptr_t)0) { + return ret; + } + + ret = TF_A_specific_handler(api_id, pm_arg, handle, security_flag); + if (ret != (uintptr_t)0) { + return ret; + } + + ret = eemi_handler(api_id, pm_arg, handle, security_flag); + + return ret; +} |