diff options
Diffstat (limited to 'drivers/firmware/qcom_scm.c')
| -rw-r--r-- | drivers/firmware/qcom_scm.c | 854 |
1 files changed, 669 insertions, 185 deletions
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 1ba0df4b97ab..059bb0fbae9e 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -1,8 +1,5 @@ // SPDX-License-Identifier: GPL-2.0-only -/* - * Qualcomm SCM driver - * - * Copyright (c) 2010,2015, The Linux Foundation. All rights reserved. +/* Copyright (c) 2010,2015,2019 The Linux Foundation. All rights reserved. * Copyright (C) 2015 Linaro Ltd. */ #include <linux/platform_device.h> @@ -19,6 +16,7 @@ #include <linux/of_platform.h> #include <linux/clk.h> #include <linux/reset-controller.h> +#include <linux/arm-smccc.h> #include "qcom_scm.h" @@ -52,6 +50,35 @@ struct qcom_scm_mem_map_info { __le64 mem_size; }; +#define QCOM_SCM_FLAG_COLDBOOT_CPU0 0x00 +#define QCOM_SCM_FLAG_COLDBOOT_CPU1 0x01 +#define QCOM_SCM_FLAG_COLDBOOT_CPU2 0x08 +#define QCOM_SCM_FLAG_COLDBOOT_CPU3 0x20 + +#define QCOM_SCM_FLAG_WARMBOOT_CPU0 0x04 +#define QCOM_SCM_FLAG_WARMBOOT_CPU1 0x02 +#define QCOM_SCM_FLAG_WARMBOOT_CPU2 0x10 +#define QCOM_SCM_FLAG_WARMBOOT_CPU3 0x40 + +struct qcom_scm_wb_entry { + int flag; + void *entry; +}; + +static struct qcom_scm_wb_entry qcom_scm_wb[] = { + { .flag = QCOM_SCM_FLAG_WARMBOOT_CPU0 }, + { .flag = QCOM_SCM_FLAG_WARMBOOT_CPU1 }, + { .flag = QCOM_SCM_FLAG_WARMBOOT_CPU2 }, + { .flag = QCOM_SCM_FLAG_WARMBOOT_CPU3 }, +}; + +static const char *qcom_scm_convention_names[] = { + [SMC_CONVENTION_UNKNOWN] = "unknown", + [SMC_CONVENTION_ARM_32] = "smc arm 32", + [SMC_CONVENTION_ARM_64] = "smc arm 64", + [SMC_CONVENTION_LEGACY] = "smc legacy", +}; + static struct qcom_scm *__scm; static int qcom_scm_clk_enable(void) @@ -87,149 +114,308 @@ static void qcom_scm_clk_disable(void) clk_disable_unprepare(__scm->bus_clk); } -/** - * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus - * @entry: Entry point function for the cpus - * @cpus: The cpumask of cpus that will use the entry point - * - * Set the cold boot address of the cpus. Any cpu outside the supported - * range would be removed from the cpu present mask. - */ -int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus) +static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, + u32 cmd_id); + +enum qcom_scm_convention qcom_scm_convention; +static bool has_queried __read_mostly; +static DEFINE_SPINLOCK(query_lock); + +static void __query_convention(void) { - return __qcom_scm_set_cold_boot_addr(entry, cpus); + unsigned long flags; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_INFO, + .cmd = QCOM_SCM_INFO_IS_CALL_AVAIL, + .args[0] = SCM_SMC_FNID(QCOM_SCM_SVC_INFO, + QCOM_SCM_INFO_IS_CALL_AVAIL) | + (ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT), + .arginfo = QCOM_SCM_ARGS(1), + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + int ret; + + spin_lock_irqsave(&query_lock, flags); + if (has_queried) + goto out; + + qcom_scm_convention = SMC_CONVENTION_ARM_64; + // Device isn't required as there is only one argument - no device + // needed to dma_map_single to secure world + ret = scm_smc_call(NULL, &desc, &res, true); + if (!ret && res.result[0] == 1) + goto out; + + qcom_scm_convention = SMC_CONVENTION_ARM_32; + ret = scm_smc_call(NULL, &desc, &res, true); + if (!ret && res.result[0] == 1) + goto out; + + qcom_scm_convention = SMC_CONVENTION_LEGACY; +out: + has_queried = true; + spin_unlock_irqrestore(&query_lock, flags); + pr_info("qcom_scm: convention: %s\n", + qcom_scm_convention_names[qcom_scm_convention]); } -EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr); -/** - * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus - * @entry: Entry point function for the cpus - * @cpus: The cpumask of cpus that will use the entry point - * - * Set the Linux entry point for the SCM to transfer control to when coming - * out of a power down. CPU power down may be executed on cpuidle or hotplug. - */ -int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus) +static inline enum qcom_scm_convention __get_convention(void) { - return __qcom_scm_set_warm_boot_addr(__scm->dev, entry, cpus); + if (unlikely(!has_queried)) + __query_convention(); + return qcom_scm_convention; } -EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr); /** - * qcom_scm_cpu_power_down() - Power down the cpu - * @flags - Flags to flush cache + * qcom_scm_call() - Invoke a syscall in the secure world + * @dev: device + * @svc_id: service identifier + * @cmd_id: command identifier + * @desc: Descriptor structure containing arguments and return values * - * This is an end point to power down cpu. If there was a pending interrupt, - * the control would return from this function, otherwise, the cpu jumps to the - * warm boot entry point set for this cpu upon reset. + * Sends a command to the SCM and waits for the command to finish processing. + * This should *only* be called in pre-emptible context. */ -void qcom_scm_cpu_power_down(u32 flags) +static int qcom_scm_call(struct device *dev, const struct qcom_scm_desc *desc, + struct qcom_scm_res *res) { - __qcom_scm_cpu_power_down(flags); + might_sleep(); + switch (__get_convention()) { + case SMC_CONVENTION_ARM_32: + case SMC_CONVENTION_ARM_64: + return scm_smc_call(dev, desc, res, false); + case SMC_CONVENTION_LEGACY: + return scm_legacy_call(dev, desc, res); + default: + pr_err("Unknown current SCM calling convention.\n"); + return -EINVAL; + } } -EXPORT_SYMBOL(qcom_scm_cpu_power_down); /** - * qcom_scm_hdcp_available() - Check if secure environment supports HDCP. + * qcom_scm_call_atomic() - atomic variation of qcom_scm_call() + * @dev: device + * @svc_id: service identifier + * @cmd_id: command identifier + * @desc: Descriptor structure containing arguments and return values + * @res: Structure containing results from SMC/HVC call * - * Return true if HDCP is supported, false if not. + * Sends a command to the SCM and waits for the command to finish processing. + * This can be called in atomic context. */ -bool qcom_scm_hdcp_available(void) +static int qcom_scm_call_atomic(struct device *dev, + const struct qcom_scm_desc *desc, + struct qcom_scm_res *res) { - int ret = qcom_scm_clk_enable(); - - if (ret) - return ret; + switch (__get_convention()) { + case SMC_CONVENTION_ARM_32: + case SMC_CONVENTION_ARM_64: + return scm_smc_call(dev, desc, res, true); + case SMC_CONVENTION_LEGACY: + return scm_legacy_call_atomic(dev, desc, res); + default: + pr_err("Unknown current SCM calling convention.\n"); + return -EINVAL; + } +} - ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP, - QCOM_SCM_CMD_HDCP); +static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, + u32 cmd_id) +{ + int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_INFO, + .cmd = QCOM_SCM_INFO_IS_CALL_AVAIL, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + + desc.arginfo = QCOM_SCM_ARGS(1); + switch (__get_convention()) { + case SMC_CONVENTION_ARM_32: + case SMC_CONVENTION_ARM_64: + desc.args[0] = SCM_SMC_FNID(svc_id, cmd_id) | + (ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT); + break; + case SMC_CONVENTION_LEGACY: + desc.args[0] = SCM_LEGACY_FNID(svc_id, cmd_id); + break; + default: + pr_err("Unknown SMC convention being used\n"); + return -EINVAL; + } - qcom_scm_clk_disable(); + ret = qcom_scm_call(dev, &desc, &res); - return ret > 0 ? true : false; + return ret ? : res.result[0]; } -EXPORT_SYMBOL(qcom_scm_hdcp_available); /** - * qcom_scm_hdcp_req() - Send HDCP request. - * @req: HDCP request array - * @req_cnt: HDCP request array count - * @resp: response buffer passed to SCM + * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus + * @entry: Entry point function for the cpus + * @cpus: The cpumask of cpus that will use the entry point * - * Write HDCP register(s) through SCM. + * Set the Linux entry point for the SCM to transfer control to when coming + * out of a power down. CPU power down may be executed on cpuidle or hotplug. */ -int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp) +int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus) { - int ret = qcom_scm_clk_enable(); + int ret; + int flags = 0; + int cpu; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_BOOT, + .cmd = QCOM_SCM_BOOT_SET_ADDR, + .arginfo = QCOM_SCM_ARGS(2), + }; - if (ret) - return ret; + /* + * Reassign only if we are switching from hotplug entry point + * to cpuidle entry point or vice versa. + */ + for_each_cpu(cpu, cpus) { + if (entry == qcom_scm_wb[cpu].entry) + continue; + flags |= qcom_scm_wb[cpu].flag; + } + + /* No change in entry function */ + if (!flags) + return 0; + + desc.args[0] = flags; + desc.args[1] = virt_to_phys(entry); + + ret = qcom_scm_call(__scm->dev, &desc, NULL); + if (!ret) { + for_each_cpu(cpu, cpus) + qcom_scm_wb[cpu].entry = entry; + } - ret = __qcom_scm_hdcp_req(__scm->dev, req, req_cnt, resp); - qcom_scm_clk_disable(); return ret; } -EXPORT_SYMBOL(qcom_scm_hdcp_req); +EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr); /** - * qcom_scm_pas_supported() - Check if the peripheral authentication service is - * available for the given peripherial - * @peripheral: peripheral id + * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus + * @entry: Entry point function for the cpus + * @cpus: The cpumask of cpus that will use the entry point * - * Returns true if PAS is supported for this peripheral, otherwise false. + * Set the cold boot address of the cpus. Any cpu outside the supported + * range would be removed from the cpu present mask. */ -bool qcom_scm_pas_supported(u32 peripheral) +int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus) { - int ret; + int flags = 0; + int cpu; + int scm_cb_flags[] = { + QCOM_SCM_FLAG_COLDBOOT_CPU0, + QCOM_SCM_FLAG_COLDBOOT_CPU1, + QCOM_SCM_FLAG_COLDBOOT_CPU2, + QCOM_SCM_FLAG_COLDBOOT_CPU3, + }; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_BOOT, + .cmd = QCOM_SCM_BOOT_SET_ADDR, + .arginfo = QCOM_SCM_ARGS(2), + .owner = ARM_SMCCC_OWNER_SIP, + }; + + if (!cpus || (cpus && cpumask_empty(cpus))) + return -EINVAL; - ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL, - QCOM_SCM_PAS_IS_SUPPORTED_CMD); - if (ret <= 0) - return false; + for_each_cpu(cpu, cpus) { + if (cpu < ARRAY_SIZE(scm_cb_flags)) + flags |= scm_cb_flags[cpu]; + else + set_cpu_present(cpu, false); + } + + desc.args[0] = flags; + desc.args[1] = virt_to_phys(entry); - return __qcom_scm_pas_supported(__scm->dev, peripheral); + return qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL); } -EXPORT_SYMBOL(qcom_scm_pas_supported); +EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr); /** - * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available + * qcom_scm_cpu_power_down() - Power down the cpu + * @flags - Flags to flush cache + * + * This is an end point to power down cpu. If there was a pending interrupt, + * the control would return from this function, otherwise, the cpu jumps to the + * warm boot entry point set for this cpu upon reset. */ -bool qcom_scm_ocmem_lock_available(void) +void qcom_scm_cpu_power_down(u32 flags) { - return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_OCMEM_SVC, - QCOM_SCM_OCMEM_LOCK_CMD); + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_BOOT, + .cmd = QCOM_SCM_BOOT_TERMINATE_PC, + .args[0] = flags & QCOM_SCM_FLUSH_FLAG_MASK, + .arginfo = QCOM_SCM_ARGS(1), + .owner = ARM_SMCCC_OWNER_SIP, + }; + + qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL); } -EXPORT_SYMBOL(qcom_scm_ocmem_lock_available); +EXPORT_SYMBOL(qcom_scm_cpu_power_down); -/** - * qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM - * region to the specified initiator - * - * @id: tz initiator id - * @offset: OCMEM offset - * @size: OCMEM size - * @mode: access mode (WIDE/NARROW) - */ -int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size, - u32 mode) +int qcom_scm_set_remote_state(u32 state, u32 id) { - return __qcom_scm_ocmem_lock(__scm->dev, id, offset, size, mode); + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_BOOT, + .cmd = QCOM_SCM_BOOT_SET_REMOTE_STATE, + .arginfo = QCOM_SCM_ARGS(2), + .args[0] = state, + .args[1] = id, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + int ret; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + + return ret ? : res.result[0]; } -EXPORT_SYMBOL(qcom_scm_ocmem_lock); +EXPORT_SYMBOL(qcom_scm_set_remote_state); -/** - * qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM - * region from the specified initiator - * - * @id: tz initiator id - * @offset: OCMEM offset - * @size: OCMEM size - */ -int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size) +static int __qcom_scm_set_dload_mode(struct device *dev, bool enable) { - return __qcom_scm_ocmem_unlock(__scm->dev, id, offset, size); + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_BOOT, + .cmd = QCOM_SCM_BOOT_SET_DLOAD_MODE, + .arginfo = QCOM_SCM_ARGS(2), + .args[0] = QCOM_SCM_BOOT_SET_DLOAD_MODE, + .owner = ARM_SMCCC_OWNER_SIP, + }; + + desc.args[1] = enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0; + + return qcom_scm_call(__scm->dev, &desc, NULL); +} + +static void qcom_scm_set_download_mode(bool enable) +{ + bool avail; + int ret = 0; + + avail = __qcom_scm_is_call_available(__scm->dev, + QCOM_SCM_SVC_BOOT, + QCOM_SCM_BOOT_SET_DLOAD_MODE); + if (avail) { + ret = __qcom_scm_set_dload_mode(__scm->dev, enable); + } else if (__scm->dload_mode_addr) { + ret = qcom_scm_io_writel(__scm->dload_mode_addr, + enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0); + } else { + dev_err(__scm->dev, + "No available mechanism for setting download mode\n"); + } + + if (ret) + dev_err(__scm->dev, "failed to set download mode: %d\n", ret); } -EXPORT_SYMBOL(qcom_scm_ocmem_unlock); /** * qcom_scm_pas_init_image() - Initialize peripheral authentication service @@ -248,6 +434,14 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size) dma_addr_t mdata_phys; void *mdata_buf; int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_PIL_PAS_INIT_IMAGE, + .arginfo = QCOM_SCM_ARGS(2, QCOM_SCM_VAL, QCOM_SCM_RW), + .args[0] = peripheral, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; /* * During the scm call memory protection will be enabled for the meta @@ -266,14 +460,16 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size) if (ret) goto free_metadata; - ret = __qcom_scm_pas_init_image(__scm->dev, peripheral, mdata_phys); + desc.args[1] = mdata_phys; + + ret = qcom_scm_call(__scm->dev, &desc, &res); qcom_scm_clk_disable(); free_metadata: dma_free_coherent(__scm->dev, size, mdata_buf, mdata_phys); - return ret; + return ret ? : res.result[0]; } EXPORT_SYMBOL(qcom_scm_pas_init_image); @@ -289,15 +485,25 @@ EXPORT_SYMBOL(qcom_scm_pas_init_image); int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, phys_addr_t size) { int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_PIL_PAS_MEM_SETUP, + .arginfo = QCOM_SCM_ARGS(3), + .args[0] = peripheral, + .args[1] = addr, + .args[2] = size, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; ret = qcom_scm_clk_enable(); if (ret) return ret; - ret = __qcom_scm_pas_mem_setup(__scm->dev, peripheral, addr, size); + ret = qcom_scm_call(__scm->dev, &desc, &res); qcom_scm_clk_disable(); - return ret; + return ret ? : res.result[0]; } EXPORT_SYMBOL(qcom_scm_pas_mem_setup); @@ -311,15 +517,23 @@ EXPORT_SYMBOL(qcom_scm_pas_mem_setup); int qcom_scm_pas_auth_and_reset(u32 peripheral) { int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_PIL_PAS_AUTH_AND_RESET, + .arginfo = QCOM_SCM_ARGS(1), + .args[0] = peripheral, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; ret = qcom_scm_clk_enable(); if (ret) return ret; - ret = __qcom_scm_pas_auth_and_reset(__scm->dev, peripheral); + ret = qcom_scm_call(__scm->dev, &desc, &res); qcom_scm_clk_disable(); - return ret; + return ret ? : res.result[0]; } EXPORT_SYMBOL(qcom_scm_pas_auth_and_reset); @@ -332,18 +546,75 @@ EXPORT_SYMBOL(qcom_scm_pas_auth_and_reset); int qcom_scm_pas_shutdown(u32 peripheral) { int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_PIL_PAS_SHUTDOWN, + .arginfo = QCOM_SCM_ARGS(1), + .args[0] = peripheral, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; ret = qcom_scm_clk_enable(); if (ret) return ret; - ret = __qcom_scm_pas_shutdown(__scm->dev, peripheral); + ret = qcom_scm_call(__scm->dev, &desc, &res); + qcom_scm_clk_disable(); - return ret; + return ret ? : res.result[0]; } EXPORT_SYMBOL(qcom_scm_pas_shutdown); +/** + * qcom_scm_pas_supported() - Check if the peripheral authentication service is + * available for the given peripherial + * @peripheral: peripheral id + * + * Returns true if PAS is supported for this peripheral, otherwise false. + */ +bool qcom_scm_pas_supported(u32 peripheral) +{ + int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_PIL_PAS_IS_SUPPORTED, + .arginfo = QCOM_SCM_ARGS(1), + .args[0] = peripheral, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + + ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL, + QCOM_SCM_PIL_PAS_IS_SUPPORTED); + if (ret <= 0) + return false; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + + return ret ? false : !!res.result[0]; +} +EXPORT_SYMBOL(qcom_scm_pas_supported); + +static int __qcom_scm_pas_mss_reset(struct device *dev, bool reset) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_PIL, + .cmd = QCOM_SCM_PIL_PAS_MSS_RESET, + .arginfo = QCOM_SCM_ARGS(2), + .args[0] = reset, + .args[1] = 0, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + int ret; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + + return ret ? : res.result[0]; +} + static int qcom_scm_pas_reset_assert(struct reset_controller_dev *rcdev, unsigned long idx) { @@ -367,6 +638,43 @@ static const struct reset_control_ops qcom_scm_pas_reset_ops = { .deassert = qcom_scm_pas_reset_deassert, }; +int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_IO, + .cmd = QCOM_SCM_IO_READ, + .arginfo = QCOM_SCM_ARGS(1), + .args[0] = addr, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + int ret; + + + ret = qcom_scm_call(__scm->dev, &desc, &res); + if (ret >= 0) + *val = res.result[0]; + + return ret < 0 ? ret : 0; +} +EXPORT_SYMBOL(qcom_scm_io_readl); + +int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_IO, + .cmd = QCOM_SCM_IO_WRITE, + .arginfo = QCOM_SCM_ARGS(2), + .args[0] = addr, + .args[1] = val, + .owner = ARM_SMCCC_OWNER_SIP, + }; + + + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL(qcom_scm_io_writel); + /** * qcom_scm_restore_sec_cfg_available() - Check if secure environment * supports restore security config interface. @@ -376,108 +684,106 @@ static const struct reset_control_ops qcom_scm_pas_reset_ops = { bool qcom_scm_restore_sec_cfg_available(void) { return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP, - QCOM_SCM_RESTORE_SEC_CFG); + QCOM_SCM_MP_RESTORE_SEC_CFG); } EXPORT_SYMBOL(qcom_scm_restore_sec_cfg_available); int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) { - return __qcom_scm_restore_sec_cfg(__scm->dev, device_id, spare); -} -EXPORT_SYMBOL(qcom_scm_restore_sec_cfg); - -int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) -{ - return __qcom_scm_iommu_secure_ptbl_size(__scm->dev, spare, size); -} -EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_size); - -int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) -{ - return __qcom_scm_iommu_secure_ptbl_init(__scm->dev, addr, size, spare); -} -EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init); + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_RESTORE_SEC_CFG, + .arginfo = QCOM_SCM_ARGS(2), + .args[0] = device_id, + .args[1] = spare, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + int ret; -int qcom_scm_qsmmu500_wait_safe_toggle(bool en) -{ - return __qcom_scm_qsmmu500_wait_safe_toggle(__scm->dev, en); -} -EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle); + ret = qcom_scm_call(__scm->dev, &desc, &res); -int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) -{ - return __qcom_scm_io_readl(__scm->dev, addr, val); + return ret ? : res.result[0]; } -EXPORT_SYMBOL(qcom_scm_io_readl); +EXPORT_SYMBOL(qcom_scm_restore_sec_cfg); -int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) +int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { - return __qcom_scm_io_writel(__scm->dev, addr, val); -} -EXPORT_SYMBOL(qcom_scm_io_writel); + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE, + .arginfo = QCOM_SCM_ARGS(1), + .args[0] = spare, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + int ret; -static void qcom_scm_set_download_mode(bool enable) -{ - bool avail; - int ret = 0; + ret = qcom_scm_call(__scm->dev, &desc, &res); - avail = __qcom_scm_is_call_available(__scm->dev, - QCOM_SCM_SVC_BOOT, - QCOM_SCM_SET_DLOAD_MODE); - if (avail) { - ret = __qcom_scm_set_dload_mode(__scm->dev, enable); - } else if (__scm->dload_mode_addr) { - ret = __qcom_scm_io_writel(__scm->dev, __scm->dload_mode_addr, - enable ? QCOM_SCM_SET_DLOAD_MODE : 0); - } else { - dev_err(__scm->dev, - "No available mechanism for setting download mode\n"); - } + if (size) + *size = res.result[0]; - if (ret) - dev_err(__scm->dev, "failed to set download mode: %d\n", ret); + return ret ? : res.result[1]; } +EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_size); -static int qcom_scm_find_dload_address(struct device *dev, u64 *addr) +int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) { - struct device_node *tcsr; - struct device_node *np = dev->of_node; - struct resource res; - u32 offset; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT, + .arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL, + QCOM_SCM_VAL), + .args[0] = addr, + .args[1] = size, + .args[2] = spare, + .owner = ARM_SMCCC_OWNER_SIP, + }; int ret; - tcsr = of_parse_phandle(np, "qcom,dload-mode", 0); - if (!tcsr) - return 0; - - ret = of_address_to_resource(tcsr, 0, &res); - of_node_put(tcsr); - if (ret) - return ret; - - ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset); - if (ret < 0) - return ret; + desc.args[0] = addr; + desc.args[1] = size; + desc.args[2] = spare; + desc.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL, + QCOM_SCM_VAL); - *addr = res.start + offset; + ret = qcom_scm_call(__scm->dev, &desc, NULL); - return 0; -} + /* the pg table has been initialized already, ignore the error */ + if (ret == -EPERM) + ret = 0; -/** - * qcom_scm_is_available() - Checks if SCM is available - */ -bool qcom_scm_is_available(void) -{ - return !!__scm; + return ret; } -EXPORT_SYMBOL(qcom_scm_is_available); +EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init); -int qcom_scm_set_remote_state(u32 state, u32 id) +static int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region, + size_t mem_sz, phys_addr_t src, size_t src_sz, + phys_addr_t dest, size_t dest_sz) { - return __qcom_scm_set_remote_state(__scm->dev, state, id); + int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_MP, + .cmd = QCOM_SCM_MP_ASSIGN, + .arginfo = QCOM_SCM_ARGS(7, QCOM_SCM_RO, QCOM_SCM_VAL, + QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_RO, + QCOM_SCM_VAL, QCOM_SCM_VAL), + .args[0] = mem_region, + .args[1] = mem_sz, + .args[2] = src, + .args[3] = src_sz, + .args[4] = dest, + .args[5] = dest_sz, + .args[6] = 0, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + + ret = qcom_scm_call(dev, &desc, &res); + + return ret ? : res.result[0]; } -EXPORT_SYMBOL(qcom_scm_set_remote_state); /** * qcom_scm_assign_mem() - Make a secure call to reassign memory ownership @@ -561,6 +867,184 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz, } EXPORT_SYMBOL(qcom_scm_assign_mem); +/** + * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available + */ +bool qcom_scm_ocmem_lock_available(void) +{ + return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_OCMEM, + QCOM_SCM_OCMEM_LOCK_CMD); +} +EXPORT_SYMBOL(qcom_scm_ocmem_lock_available); + +/** + * qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM + * region to the specified initiator + * + * @id: tz initiator id + * @offset: OCMEM offset + * @size: OCMEM size + * @mode: access mode (WIDE/NARROW) + */ +int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size, + u32 mode) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_OCMEM, + .cmd = QCOM_SCM_OCMEM_LOCK_CMD, + .args[0] = id, + .args[1] = offset, + .args[2] = size, + .args[3] = mode, + .arginfo = QCOM_SCM_ARGS(4), + }; + + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL(qcom_scm_ocmem_lock); + +/** + * qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM + * region from the specified initiator + * + * @id: tz initiator id + * @offset: OCMEM offset + * @size: OCMEM size + */ +int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_OCMEM, + .cmd = QCOM_SCM_OCMEM_UNLOCK_CMD, + .args[0] = id, + .args[1] = offset, + .args[2] = size, + .arginfo = QCOM_SCM_ARGS(3), + }; + + return qcom_scm_call(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL(qcom_scm_ocmem_unlock); + +/** + * qcom_scm_hdcp_available() - Check if secure environment supports HDCP. + * + * Return true if HDCP is supported, false if not. + */ +bool qcom_scm_hdcp_available(void) +{ + int ret = qcom_scm_clk_enable(); + + if (ret) + return ret; + + ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP, + QCOM_SCM_HDCP_INVOKE); + + qcom_scm_clk_disable(); + + return ret > 0 ? true : false; +} +EXPORT_SYMBOL(qcom_scm_hdcp_available); + +/** + * qcom_scm_hdcp_req() - Send HDCP request. + * @req: HDCP request array + * @req_cnt: HDCP request array count + * @resp: response buffer passed to SCM + * + * Write HDCP register(s) through SCM. + */ +int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp) +{ + int ret; + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_HDCP, + .cmd = QCOM_SCM_HDCP_INVOKE, + .arginfo = QCOM_SCM_ARGS(10), + .args = { + req[0].addr, + req[0].val, + req[1].addr, + req[1].val, + req[2].addr, + req[2].val, + req[3].addr, + req[3].val, + req[4].addr, + req[4].val + }, + .owner = ARM_SMCCC_OWNER_SIP, + }; + struct qcom_scm_res res; + + if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT) + return -ERANGE; + + ret = qcom_scm_clk_enable(); + if (ret) + return ret; + + ret = qcom_scm_call(__scm->dev, &desc, &res); + *resp = res.result[0]; + + qcom_scm_clk_disable(); + + return ret; +} +EXPORT_SYMBOL(qcom_scm_hdcp_req); + +int qcom_scm_qsmmu500_wait_safe_toggle(bool en) +{ + struct qcom_scm_desc desc = { + .svc = QCOM_SCM_SVC_SMMU_PROGRAM, + .cmd = QCOM_SCM_SMMU_CONFIG_ERRATA1, + .arginfo = QCOM_SCM_ARGS(2), + .args[0] = QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL, + .args[1] = en, + .owner = ARM_SMCCC_OWNER_SIP, + }; + + + return qcom_scm_call_atomic(__scm->dev, &desc, NULL); +} +EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle); + +static int qcom_scm_find_dload_address(struct device *dev, u64 *addr) +{ + struct device_node *tcsr; + struct device_node *np = dev->of_node; + struct resource res; + u32 offset; + int ret; + + tcsr = of_parse_phandle(np, "qcom,dload-mode", 0); + if (!tcsr) + return 0; + + ret = of_address_to_resource(tcsr, 0, &res); + of_node_put(tcsr); + if (ret) + return ret; + + ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset); + if (ret < 0) + return ret; + + *addr = res.start + offset; + + return 0; +} + +/** + * qcom_scm_is_available() - Checks if SCM is available + */ +bool qcom_scm_is_available(void) +{ + return !!__scm; +} +EXPORT_SYMBOL(qcom_scm_is_available); + static int qcom_scm_probe(struct platform_device *pdev) { struct qcom_scm *scm; @@ -631,7 +1115,7 @@ static int qcom_scm_probe(struct platform_device *pdev) __scm = scm; __scm->dev = &pdev->dev; - __qcom_scm_init(); + __query_convention(); /* * If requested enable "download mode", from this point on warmboot |