1 // SPDX-License-Identifier: GPL-2.0-or-later
8  * Maintained by: <tpmdd-devel@lists.sourceforge.net>
31 	node = of_parse_phandle(chip->dev.parent->of_node, "memory-region", 0);  in tpm_read_log_memory_region()
33 		return -ENODEV;  in tpm_read_log_memory_region()
40 	chip->log.bios_event_log = devm_memremap(&chip->dev, res.start, resource_size(&res),  in tpm_read_log_memory_region()
42 	if (IS_ERR(chip->log.bios_event_log))  in tpm_read_log_memory_region()
43 		return -ENOMEM;  in tpm_read_log_memory_region()
45 	chip->log.bios_event_log_end = chip->log.bios_event_log + resource_size(&res);  in tpm_read_log_memory_region()
47 	return chip->flags & TPM_CHIP_FLAG_TPM2 ? EFI_TCG2_EVENT_LOG_FORMAT_TCG_2 :  in tpm_read_log_memory_region()
57 	u32 size;  in tpm_read_log_of()  local
60 	log = &chip->log;  in tpm_read_log_of()
61 	if (chip->dev.parent && chip->dev.parent->of_node)  in tpm_read_log_of()
62 		np = chip->dev.parent->of_node;  in tpm_read_log_of()
64 		return -ENODEV;  in tpm_read_log_of()
66 	if (of_property_read_bool(np, "powered-while-suspended"))  in tpm_read_log_of()
67 		chip->flags |= TPM_CHIP_FLAG_ALWAYS_POWERED;  in tpm_read_log_of()
69 	sizep = of_get_property(np, "linux,sml-size", NULL);  in tpm_read_log_of()
70 	basep = of_get_property(np, "linux,sml-base", NULL);  in tpm_read_log_of()
74 		return -EIO;  in tpm_read_log_of()
77 	 * For both vtpm/tpm, firmware has log addr and log size in big  in tpm_read_log_of()
79 	 * sml-handover which is run during kernel init even before  in tpm_read_log_of()
80 	 * device tree is setup. This sml-handover function takes care  in tpm_read_log_of()
81 	 * of endianness and writes to sml-base and sml-size in little  in tpm_read_log_of()
87 		size = be32_to_cpup((__force __be32 *)sizep);  in tpm_read_log_of()
90 		size = *sizep;  in tpm_read_log_of()
94 	if (size == 0) {  in tpm_read_log_of()
95 		dev_warn(&chip->dev, "%s: Event log area empty\n", __func__);  in tpm_read_log_of()
96 		return -EIO;  in tpm_read_log_of()
99 	log->bios_event_log = devm_kmemdup(&chip->dev, __va(base), size, GFP_KERNEL);  in tpm_read_log_of()
100 	if (!log->bios_event_log)  in tpm_read_log_of()
101 		return -ENOMEM;  in tpm_read_log_of()
103 	log->bios_event_log_end = log->bios_event_log + size;  in tpm_read_log_of()
105 	if (chip->flags & TPM_CHIP_FLAG_TPM2)  in tpm_read_log_of()