| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Gilad Ben-Yossef | 2581 | 88.72% | 20 | 51.28% |
| Ofir Drang | 164 | 5.64% | 4 | 10.26% |
| Geert Uytterhoeven | 125 | 4.30% | 7 | 17.95% |
| Yael Chemla | 26 | 0.89% | 1 | 2.56% |
| Krzysztof Kozlowski | 5 | 0.17% | 1 | 2.56% |
| Hadar Gat | 3 | 0.10% | 2 | 5.13% |
| Arnd Bergmann | 2 | 0.07% | 1 | 2.56% |
| Christophe Jaillet | 1 | 0.03% | 1 | 2.56% |
| Yue haibing | 1 | 0.03% | 1 | 2.56% |
| Colin Ian King | 1 | 0.03% | 1 | 2.56% |
| Total | 2909 | 39 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright (C) 2012-2019 ARM Limited or its affiliates. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/crypto.h> #include <linux/moduleparam.h> #include <linux/types.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/of.h> #include <linux/clk.h> #include <linux/of_address.h> #include <linux/of_device.h> #include <linux/pm_runtime.h> #include "cc_driver.h" #include "cc_request_mgr.h" #include "cc_buffer_mgr.h" #include "cc_debugfs.h" #include "cc_cipher.h" #include "cc_aead.h" #include "cc_hash.h" #include "cc_sram_mgr.h" #include "cc_pm.h" #include "cc_fips.h" bool cc_dump_desc; module_param_named(dump_desc, cc_dump_desc, bool, 0600); MODULE_PARM_DESC(cc_dump_desc, "Dump descriptors to kernel log as debugging aid"); bool cc_dump_bytes; module_param_named(dump_bytes, cc_dump_bytes, bool, 0600); MODULE_PARM_DESC(cc_dump_bytes, "Dump buffers to kernel log as debugging aid"); static bool cc_sec_disable; module_param_named(sec_disable, cc_sec_disable, bool, 0600); MODULE_PARM_DESC(cc_sec_disable, "Disable security functions"); struct cc_hw_data { char *name; enum cc_hw_rev rev; u32 sig; u32 cidr_0123; u32 pidr_0124; int std_bodies; }; #define CC_NUM_IDRS 4 #define CC_HW_RESET_LOOP_COUNT 10 /* Note: PIDR3 holds CMOD/Rev so ignored for HW identification purposes */ static const u32 pidr_0124_offsets[CC_NUM_IDRS] = { CC_REG(PERIPHERAL_ID_0), CC_REG(PERIPHERAL_ID_1), CC_REG(PERIPHERAL_ID_2), CC_REG(PERIPHERAL_ID_4) }; static const u32 cidr_0123_offsets[CC_NUM_IDRS] = { CC_REG(COMPONENT_ID_0), CC_REG(COMPONENT_ID_1), CC_REG(COMPONENT_ID_2), CC_REG(COMPONENT_ID_3) }; /* Hardware revisions defs. */ /* The 703 is a OSCCA only variant of the 713 */ static const struct cc_hw_data cc703_hw = { .name = "703", .rev = CC_HW_REV_713, .cidr_0123 = 0xB105F00DU, .pidr_0124 = 0x040BB0D0U, .std_bodies = CC_STD_OSCCA }; static const struct cc_hw_data cc713_hw = { .name = "713", .rev = CC_HW_REV_713, .cidr_0123 = 0xB105F00DU, .pidr_0124 = 0x040BB0D0U, .std_bodies = CC_STD_ALL }; static const struct cc_hw_data cc712_hw = { .name = "712", .rev = CC_HW_REV_712, .sig = 0xDCC71200U, .std_bodies = CC_STD_ALL }; static const struct cc_hw_data cc710_hw = { .name = "710", .rev = CC_HW_REV_710, .sig = 0xDCC63200U, .std_bodies = CC_STD_ALL }; static const struct cc_hw_data cc630p_hw = { .name = "630P", .rev = CC_HW_REV_630, .sig = 0xDCC63000U, .std_bodies = CC_STD_ALL }; static const struct of_device_id arm_ccree_dev_of_match[] = { { .compatible = "arm,cryptocell-703-ree", .data = &cc703_hw }, { .compatible = "arm,cryptocell-713-ree", .data = &cc713_hw }, { .compatible = "arm,cryptocell-712-ree", .data = &cc712_hw }, { .compatible = "arm,cryptocell-710-ree", .data = &cc710_hw }, { .compatible = "arm,cryptocell-630p-ree", .data = &cc630p_hw }, {} }; MODULE_DEVICE_TABLE(of, arm_ccree_dev_of_match); static void init_cc_cache_params(struct cc_drvdata *drvdata) { struct device *dev = drvdata_to_dev(drvdata); u32 cache_params, ace_const, val; u64 mask; /* compute CC_AXIM_CACHE_PARAMS */ cache_params = cc_ioread(drvdata, CC_REG(AXIM_CACHE_PARAMS)); dev_dbg(dev, "Cache params previous: 0x%08X\n", cache_params); /* non cached or write-back, write allocate */ val = drvdata->coherent ? 0xb : 0x2; mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE); cache_params &= ~mask; cache_params |= FIELD_PREP(mask, val); mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE_LAST); cache_params &= ~mask; cache_params |= FIELD_PREP(mask, val); mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_ARCACHE); cache_params &= ~mask; cache_params |= FIELD_PREP(mask, val); drvdata->cache_params = cache_params; dev_dbg(dev, "Cache params current: 0x%08X\n", cache_params); if (drvdata->hw_rev <= CC_HW_REV_710) return; /* compute CC_AXIM_ACE_CONST */ ace_const = cc_ioread(drvdata, CC_REG(AXIM_ACE_CONST)); dev_dbg(dev, "ACE-const previous: 0x%08X\n", ace_const); /* system or outer-sharable */ val = drvdata->coherent ? 0x2 : 0x3; mask = CC_GENMASK(CC_AXIM_ACE_CONST_ARDOMAIN); ace_const &= ~mask; ace_const |= FIELD_PREP(mask, val); mask = CC_GENMASK(CC_AXIM_ACE_CONST_AWDOMAIN); ace_const &= ~mask; ace_const |= FIELD_PREP(mask, val); dev_dbg(dev, "ACE-const current: 0x%08X\n", ace_const); drvdata->ace_const = ace_const; } static u32 cc_read_idr(struct cc_drvdata *drvdata, const u32 *idr_offsets) { int i; union { u8 regs[CC_NUM_IDRS]; __le32 val; } idr; for (i = 0; i < CC_NUM_IDRS; ++i) idr.regs[i] = cc_ioread(drvdata, idr_offsets[i]); return le32_to_cpu(idr.val); } void __dump_byte_array(const char *name, const u8 *buf, size_t len) { char prefix[64]; if (!buf) return; snprintf(prefix, sizeof(prefix), "%s[%zu]: ", name, len); print_hex_dump(KERN_DEBUG, prefix, DUMP_PREFIX_ADDRESS, 16, 1, buf, len, false); } static irqreturn_t cc_isr(int irq, void *dev_id) { struct cc_drvdata *drvdata = (struct cc_drvdata *)dev_id; struct device *dev = drvdata_to_dev(drvdata); u32 irr; u32 imr; /* STAT_OP_TYPE_GENERIC STAT_PHASE_0: Interrupt */ /* if driver suspended return, probably shared interrupt */ if (pm_runtime_suspended(dev)) return IRQ_NONE; /* read the interrupt status */ irr = cc_ioread(drvdata, CC_REG(HOST_IRR)); dev_dbg(dev, "Got IRR=0x%08X\n", irr); if (irr == 0) /* Probably shared interrupt line */ return IRQ_NONE; imr = cc_ioread(drvdata, CC_REG(HOST_IMR)); /* clear interrupt - must be before processing events */ cc_iowrite(drvdata, CC_REG(HOST_ICR), irr); drvdata->irq = irr; /* Completion interrupt - most probable */ if (irr & drvdata->comp_mask) { /* Mask all completion interrupts - will be unmasked in * deferred service handler */ cc_iowrite(drvdata, CC_REG(HOST_IMR), imr | drvdata->comp_mask); irr &= ~drvdata->comp_mask; complete_request(drvdata); } #ifdef CONFIG_CRYPTO_FIPS /* TEE FIPS interrupt */ if (irr & CC_GPR0_IRQ_MASK) { /* Mask interrupt - will be unmasked in Deferred service * handler */ cc_iowrite(drvdata, CC_REG(HOST_IMR), imr | CC_GPR0_IRQ_MASK); irr &= ~CC_GPR0_IRQ_MASK; fips_handler(drvdata); } #endif /* AXI error interrupt */ if (irr & CC_AXI_ERR_IRQ_MASK) { u32 axi_err; /* Read the AXI error ID */ axi_err = cc_ioread(drvdata, CC_REG(AXIM_MON_ERR)); dev_dbg(dev, "AXI completion error: axim_mon_err=0x%08X\n", axi_err); irr &= ~CC_AXI_ERR_IRQ_MASK; } if (irr) { dev_dbg_ratelimited(dev, "IRR includes unknown cause bits (0x%08X)\n", irr); /* Just warning */ } return IRQ_HANDLED; } bool cc_wait_for_reset_completion(struct cc_drvdata *drvdata) { unsigned int val; unsigned int i; /* 712/710/63 has no reset completion indication, always return true */ if (drvdata->hw_rev <= CC_HW_REV_712) return true; for (i = 0; i < CC_HW_RESET_LOOP_COUNT; i++) { /* in cc7x3 NVM_IS_IDLE indicates that CC reset is * completed and device is fully functional */ val = cc_ioread(drvdata, CC_REG(NVM_IS_IDLE)); if (val & CC_NVM_IS_IDLE_MASK) { /* hw indicate reset completed */ return true; } /* allow scheduling other process on the processor */ schedule(); } /* reset not completed */ return false; } int init_cc_regs(struct cc_drvdata *drvdata) { unsigned int val; struct device *dev = drvdata_to_dev(drvdata); /* Unmask all AXI interrupt sources AXI_CFG1 register */ /* AXI interrupt config are obsoleted startign at cc7x3 */ if (drvdata->hw_rev <= CC_HW_REV_712) { val = cc_ioread(drvdata, CC_REG(AXIM_CFG)); cc_iowrite(drvdata, CC_REG(AXIM_CFG), val & ~CC_AXI_IRQ_MASK); dev_dbg(dev, "AXIM_CFG=0x%08X\n", cc_ioread(drvdata, CC_REG(AXIM_CFG))); } /* Clear all pending interrupts */ val = cc_ioread(drvdata, CC_REG(HOST_IRR)); dev_dbg(dev, "IRR=0x%08X\n", val); cc_iowrite(drvdata, CC_REG(HOST_ICR), val); /* Unmask relevant interrupt cause */ val = drvdata->comp_mask | CC_AXI_ERR_IRQ_MASK; if (drvdata->hw_rev >= CC_HW_REV_712) val |= CC_GPR0_IRQ_MASK; cc_iowrite(drvdata, CC_REG(HOST_IMR), ~val); cc_iowrite(drvdata, CC_REG(AXIM_CACHE_PARAMS), drvdata->cache_params); if (drvdata->hw_rev >= CC_HW_REV_712) cc_iowrite(drvdata, CC_REG(AXIM_ACE_CONST), drvdata->ace_const); return 0; } static int init_cc_resources(struct platform_device *plat_dev) { struct resource *req_mem_cc_regs = NULL; struct cc_drvdata *new_drvdata; struct device *dev = &plat_dev->dev; struct device_node *np = dev->of_node; u32 val, hw_rev_pidr, sig_cidr; u64 dma_mask; const struct cc_hw_data *hw_rev; struct clk *clk; int irq; int rc = 0; new_drvdata = devm_kzalloc(dev, sizeof(*new_drvdata), GFP_KERNEL); if (!new_drvdata) return -ENOMEM; hw_rev = of_device_get_match_data(dev); new_drvdata->hw_rev_name = hw_rev->name; new_drvdata->hw_rev = hw_rev->rev; new_drvdata->std_bodies = hw_rev->std_bodies; if (hw_rev->rev >= CC_HW_REV_712) { new_drvdata->axim_mon_offset = CC_REG(AXIM_MON_COMP); new_drvdata->sig_offset = CC_REG(HOST_SIGNATURE_712); new_drvdata->ver_offset = CC_REG(HOST_VERSION_712); } else { new_drvdata->axim_mon_offset = CC_REG(AXIM_MON_COMP8); new_drvdata->sig_offset = CC_REG(HOST_SIGNATURE_630); new_drvdata->ver_offset = CC_REG(HOST_VERSION_630); } new_drvdata->comp_mask = CC_COMP_IRQ_MASK; platform_set_drvdata(plat_dev, new_drvdata); new_drvdata->plat_dev = plat_dev; clk = devm_clk_get_optional(dev, NULL); if (IS_ERR(clk)) return dev_err_probe(dev, PTR_ERR(clk), "Error getting clock\n"); new_drvdata->clk = clk; new_drvdata->coherent = of_dma_is_coherent(np); /* Get device resources */ /* First CC registers space */ req_mem_cc_regs = platform_get_resource(plat_dev, IORESOURCE_MEM, 0); /* Map registers space */ new_drvdata->cc_base = devm_ioremap_resource(dev, req_mem_cc_regs); if (IS_ERR(new_drvdata->cc_base)) return PTR_ERR(new_drvdata->cc_base); dev_dbg(dev, "Got MEM resource (%s): %pR\n", req_mem_cc_regs->name, req_mem_cc_regs); dev_dbg(dev, "CC registers mapped from %pa to 0x%p\n", &req_mem_cc_regs->start, new_drvdata->cc_base); /* Then IRQ */ irq = platform_get_irq(plat_dev, 0); if (irq < 0) return irq; init_completion(&new_drvdata->hw_queue_avail); if (!dev->dma_mask) dev->dma_mask = &dev->coherent_dma_mask; dma_mask = DMA_BIT_MASK(DMA_BIT_MASK_LEN); rc = dma_set_coherent_mask(dev, dma_mask); if (rc) { dev_err(dev, "Failed in dma_set_coherent_mask, mask=%llx\n", dma_mask); return rc; } rc = clk_prepare_enable(new_drvdata->clk); if (rc) { dev_err(dev, "Failed to enable clock"); return rc; } new_drvdata->sec_disabled = cc_sec_disable; pm_runtime_set_autosuspend_delay(dev, CC_SUSPEND_TIMEOUT); pm_runtime_use_autosuspend(dev); pm_runtime_set_active(dev); pm_runtime_enable(dev); rc = pm_runtime_get_sync(dev); if (rc < 0) { dev_err(dev, "pm_runtime_get_sync() failed: %d\n", rc); goto post_pm_err; } /* Wait for Cryptocell reset completion */ if (!cc_wait_for_reset_completion(new_drvdata)) { dev_err(dev, "Cryptocell reset not completed"); } if (hw_rev->rev <= CC_HW_REV_712) { /* Verify correct mapping */ val = cc_ioread(new_drvdata, new_drvdata->sig_offset); if (val != hw_rev->sig) { dev_err(dev, "Invalid CC signature: SIGNATURE=0x%08X != expected=0x%08X\n", val, hw_rev->sig); rc = -EINVAL; goto post_pm_err; } sig_cidr = val; hw_rev_pidr = cc_ioread(new_drvdata, new_drvdata->ver_offset); } else { /* Verify correct mapping */ val = cc_read_idr(new_drvdata, pidr_0124_offsets); if (val != hw_rev->pidr_0124) { dev_err(dev, "Invalid CC PIDR: PIDR0124=0x%08X != expected=0x%08X\n", val, hw_rev->pidr_0124); rc = -EINVAL; goto post_pm_err; } hw_rev_pidr = val; val = cc_read_idr(new_drvdata, cidr_0123_offsets); if (val != hw_rev->cidr_0123) { dev_err(dev, "Invalid CC CIDR: CIDR0123=0x%08X != expected=0x%08X\n", val, hw_rev->cidr_0123); rc = -EINVAL; goto post_pm_err; } sig_cidr = val; /* Check HW engine configuration */ val = cc_ioread(new_drvdata, CC_REG(HOST_REMOVE_INPUT_PINS)); switch (val) { case CC_PINS_FULL: /* This is fine */ break; case CC_PINS_SLIM: if (new_drvdata->std_bodies & CC_STD_NIST) { dev_warn(dev, "703 mode forced due to HW configuration.\n"); new_drvdata->std_bodies = CC_STD_OSCCA; } break; default: dev_err(dev, "Unsupported engines configuration.\n"); rc = -EINVAL; goto post_pm_err; } /* Check security disable state */ val = cc_ioread(new_drvdata, CC_REG(SECURITY_DISABLED)); val &= CC_SECURITY_DISABLED_MASK; new_drvdata->sec_disabled |= !!val; if (!new_drvdata->sec_disabled) { new_drvdata->comp_mask |= CC_CPP_SM4_ABORT_MASK; if (new_drvdata->std_bodies & CC_STD_NIST) new_drvdata->comp_mask |= CC_CPP_AES_ABORT_MASK; } } if (new_drvdata->sec_disabled) dev_info(dev, "Security Disabled mode is in effect. Security functions disabled.\n"); /* Display HW versions */ dev_info(dev, "ARM CryptoCell %s Driver: HW version 0x%08X/0x%8X, Driver version %s\n", hw_rev->name, hw_rev_pidr, sig_cidr, DRV_MODULE_VERSION); /* register the driver isr function */ rc = devm_request_irq(dev, irq, cc_isr, IRQF_SHARED, "ccree", new_drvdata); if (rc) { dev_err(dev, "Could not register to interrupt %d\n", irq); goto post_pm_err; } dev_dbg(dev, "Registered to IRQ: %d\n", irq); init_cc_cache_params(new_drvdata); rc = init_cc_regs(new_drvdata); if (rc) { dev_err(dev, "init_cc_regs failed\n"); goto post_pm_err; } rc = cc_debugfs_init(new_drvdata); if (rc) { dev_err(dev, "Failed registering debugfs interface\n"); goto post_regs_err; } rc = cc_fips_init(new_drvdata); if (rc) { dev_err(dev, "cc_fips_init failed 0x%x\n", rc); goto post_debugfs_err; } rc = cc_sram_mgr_init(new_drvdata); if (rc) { dev_err(dev, "cc_sram_mgr_init failed\n"); goto post_fips_init_err; } new_drvdata->mlli_sram_addr = cc_sram_alloc(new_drvdata, MAX_MLLI_BUFF_SIZE); if (new_drvdata->mlli_sram_addr == NULL_SRAM_ADDR) { rc = -ENOMEM; goto post_fips_init_err; } rc = cc_req_mgr_init(new_drvdata); if (rc) { dev_err(dev, "cc_req_mgr_init failed\n"); goto post_fips_init_err; } rc = cc_buffer_mgr_init(new_drvdata); if (rc) { dev_err(dev, "cc_buffer_mgr_init failed\n"); goto post_req_mgr_err; } /* hash must be allocated first due to use of send_request_init() * and dependency of AEAD on it */ rc = cc_hash_alloc(new_drvdata); if (rc) { dev_err(dev, "cc_hash_alloc failed\n"); goto post_buf_mgr_err; } /* Allocate crypto algs */ rc = cc_cipher_alloc(new_drvdata); if (rc) { dev_err(dev, "cc_cipher_alloc failed\n"); goto post_hash_err; } rc = cc_aead_alloc(new_drvdata); if (rc) { dev_err(dev, "cc_aead_alloc failed\n"); goto post_cipher_err; } /* If we got here and FIPS mode is enabled * it means all FIPS test passed, so let TEE * know we're good. */ cc_set_ree_fips_status(new_drvdata, true); pm_runtime_put(dev); return 0; post_cipher_err: cc_cipher_free(new_drvdata); post_hash_err: cc_hash_free(new_drvdata); post_buf_mgr_err: cc_buffer_mgr_fini(new_drvdata); post_req_mgr_err: cc_req_mgr_fini(new_drvdata); post_fips_init_err: cc_fips_fini(new_drvdata); post_debugfs_err: cc_debugfs_fini(new_drvdata); post_regs_err: fini_cc_regs(new_drvdata); post_pm_err: pm_runtime_put_noidle(dev); pm_runtime_disable(dev); pm_runtime_set_suspended(dev); clk_disable_unprepare(new_drvdata->clk); return rc; } void fini_cc_regs(struct cc_drvdata *drvdata) { /* Mask all interrupts */ cc_iowrite(drvdata, CC_REG(HOST_IMR), 0xFFFFFFFF); } static void cleanup_cc_resources(struct platform_device *plat_dev) { struct device *dev = &plat_dev->dev; struct cc_drvdata *drvdata = (struct cc_drvdata *)platform_get_drvdata(plat_dev); cc_aead_free(drvdata); cc_cipher_free(drvdata); cc_hash_free(drvdata); cc_buffer_mgr_fini(drvdata); cc_req_mgr_fini(drvdata); cc_fips_fini(drvdata); cc_debugfs_fini(drvdata); fini_cc_regs(drvdata); pm_runtime_put_noidle(dev); pm_runtime_disable(dev); pm_runtime_set_suspended(dev); clk_disable_unprepare(drvdata->clk); } unsigned int cc_get_default_hash_len(struct cc_drvdata *drvdata) { if (drvdata->hw_rev >= CC_HW_REV_712) return HASH_LEN_SIZE_712; else return HASH_LEN_SIZE_630; } static int ccree_probe(struct platform_device *plat_dev) { int rc; struct device *dev = &plat_dev->dev; /* Map registers space */ rc = init_cc_resources(plat_dev); if (rc) return rc; dev_info(dev, "ARM ccree device initialized\n"); return 0; } static int ccree_remove(struct platform_device *plat_dev) { struct device *dev = &plat_dev->dev; dev_dbg(dev, "Releasing ccree resources...\n"); cleanup_cc_resources(plat_dev); dev_info(dev, "ARM ccree device terminated\n"); return 0; } static struct platform_driver ccree_driver = { .driver = { .name = "ccree", .of_match_table = arm_ccree_dev_of_match, #ifdef CONFIG_PM .pm = &ccree_pm, #endif }, .probe = ccree_probe, .remove = ccree_remove, }; static int __init ccree_init(void) { cc_debugfs_global_init(); return platform_driver_register(&ccree_driver); } module_init(ccree_init); static void __exit ccree_exit(void) { platform_driver_unregister(&ccree_driver); cc_debugfs_global_fini(); } module_exit(ccree_exit); /* Module description */ MODULE_DESCRIPTION("ARM TrustZone CryptoCell REE Driver"); MODULE_VERSION(DRV_MODULE_VERSION); MODULE_AUTHOR("ARM"); MODULE_LICENSE("GPL v2");
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