1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2018-2019, Intel Corporation. */
3 
4 #ifndef _PLDMFW_H_
5 #define _PLDMFW_H_
6 
7 #include <linux/list.h>
8 #include <linux/firmware.h>
9 
10 #define PLDM_DEVICE_UPDATE_CONTINUE_AFTER_FAIL BIT(0)
11 
12 #define PLDM_STRING_TYPE_UNKNOWN	0
13 #define PLDM_STRING_TYPE_ASCII		1
14 #define PLDM_STRING_TYPE_UTF8		2
15 #define PLDM_STRING_TYPE_UTF16		3
16 #define PLDM_STRING_TYPE_UTF16LE	4
17 #define PLDM_STRING_TYPE_UTF16BE	5
18 
19 struct pldmfw_record {
20 	struct list_head entry;
21 
22 	/* List of descriptor TLVs */
23 	struct list_head descs;
24 
25 	/* Component Set version string*/
26 	const u8 *version_string;
27 	u8 version_type;
28 	u8 version_len;
29 
30 	/* Package Data length */
31 	u16 package_data_len;
32 
33 	/* Bitfield of Device Update Flags */
34 	u32 device_update_flags;
35 
36 	/* Package Data block */
37 	const u8 *package_data;
38 
39 	/* Bitmap of components applicable to this record */
40 	unsigned long *component_bitmap;
41 	u16 component_bitmap_len;
42 };
43 
44 /* Standard descriptor TLV identifiers */
45 #define PLDM_DESC_ID_PCI_VENDOR_ID	0x0000
46 #define PLDM_DESC_ID_IANA_ENTERPRISE_ID	0x0001
47 #define PLDM_DESC_ID_UUID		0x0002
48 #define PLDM_DESC_ID_PNP_VENDOR_ID	0x0003
49 #define PLDM_DESC_ID_ACPI_VENDOR_ID	0x0004
50 #define PLDM_DESC_ID_PCI_DEVICE_ID	0x0100
51 #define PLDM_DESC_ID_PCI_SUBVENDOR_ID	0x0101
52 #define PLDM_DESC_ID_PCI_SUBDEV_ID	0x0102
53 #define PLDM_DESC_ID_PCI_REVISION_ID	0x0103
54 #define PLDM_DESC_ID_PNP_PRODUCT_ID	0x0104
55 #define PLDM_DESC_ID_ACPI_PRODUCT_ID	0x0105
56 #define PLDM_DESC_ID_VENDOR_DEFINED	0xFFFF
57 
58 struct pldmfw_desc_tlv {
59 	struct list_head entry;
60 
61 	const u8 *data;
62 	u16 type;
63 	u16 size;
64 };
65 
66 #define PLDM_CLASSIFICATION_UNKNOWN		0x0000
67 #define PLDM_CLASSIFICATION_OTHER		0x0001
68 #define PLDM_CLASSIFICATION_DRIVER		0x0002
69 #define PLDM_CLASSIFICATION_CONFIG_SW		0x0003
70 #define PLDM_CLASSIFICATION_APP_SW		0x0004
71 #define PLDM_CLASSIFICATION_INSTRUMENTATION	0x0005
72 #define PLDM_CLASSIFICATION_BIOS		0x0006
73 #define PLDM_CLASSIFICATION_DIAGNOSTIC_SW	0x0007
74 #define PLDM_CLASSIFICATION_OS			0x0008
75 #define PLDM_CLASSIFICATION_MIDDLEWARE		0x0009
76 #define PLDM_CLASSIFICATION_FIRMWARE		0x000A
77 #define PLDM_CLASSIFICATION_CODE		0x000B
78 #define PLDM_CLASSIFICATION_SERVICE_PACK	0x000C
79 #define PLDM_CLASSIFICATION_SOFTWARE_BUNDLE	0x000D
80 
81 #define PLDM_ACTIVATION_METHOD_AUTO		BIT(0)
82 #define PLDM_ACTIVATION_METHOD_SELF_CONTAINED	BIT(1)
83 #define PLDM_ACTIVATION_METHOD_MEDIUM_SPECIFIC	BIT(2)
84 #define PLDM_ACTIVATION_METHOD_REBOOT		BIT(3)
85 #define PLDM_ACTIVATION_METHOD_DC_CYCLE		BIT(4)
86 #define PLDM_ACTIVATION_METHOD_AC_CYCLE		BIT(5)
87 
88 #define PLDMFW_COMPONENT_OPTION_FORCE_UPDATE		BIT(0)
89 #define PLDMFW_COMPONENT_OPTION_USE_COMPARISON_STAMP	BIT(1)
90 
91 struct pldmfw_component {
92 	struct list_head entry;
93 
94 	/* component identifier */
95 	u16 classification;
96 	u16 identifier;
97 
98 	u16 options;
99 	u16 activation_method;
100 
101 	u32 comparison_stamp;
102 
103 	u32 component_size;
104 	const u8 *component_data;
105 
106 	/* Component version string */
107 	const u8 *version_string;
108 	u8 version_type;
109 	u8 version_len;
110 
111 	/* component index */
112 	u8 index;
113 
114 };
115 
116 /* Transfer flag used for sending components to the firmware */
117 #define PLDM_TRANSFER_FLAG_START		BIT(0)
118 #define PLDM_TRANSFER_FLAG_MIDDLE		BIT(1)
119 #define PLDM_TRANSFER_FLAG_END			BIT(2)
120 
121 struct pldmfw_ops;
122 
123 /* Main entry point to the PLDM firmware update engine. Device drivers
124  * should embed this in a private structure and use container_of to obtain
125  * a pointer to their own data, used to implement the device specific
126  * operations.
127  */
128 struct pldmfw {
129 	const struct pldmfw_ops *ops;
130 	struct device *dev;
131 };
132 
133 bool pldmfw_op_pci_match_record(struct pldmfw *context, struct pldmfw_record *record);
134 
135 /* Operations invoked by the generic PLDM firmware update engine. Used to
136  * implement device specific logic.
137  *
138  * @match_record: check if the device matches the given record. For
139  * convenience, a standard implementation is provided for PCI devices.
140  *
141  * @send_package_data: send the package data associated with the matching
142  * record to firmware.
143  *
144  * @send_component_table: send the component data associated with a given
145  * component to firmware. Called once for each applicable component.
146  *
147  * @flash_component: Flash the data for a given component to the device.
148  * Called once for each applicable component, after all component tables have
149  * been sent.
150  *
151  * @finalize_update: (optional) Finish the update. Called after all components
152  * have been flashed.
153  */
154 struct pldmfw_ops {
155 	bool (*match_record)(struct pldmfw *context, struct pldmfw_record *record);
156 	int (*send_package_data)(struct pldmfw *context, const u8 *data, u16 length);
157 	int (*send_component_table)(struct pldmfw *context, struct pldmfw_component *component,
158 				    u8 transfer_flag);
159 	int (*flash_component)(struct pldmfw *context, struct pldmfw_component *component);
160 	int (*finalize_update)(struct pldmfw *context);
161 };
162 
163 int pldmfw_flash_image(struct pldmfw *context, const struct firmware *fw);
164 
165 #endif
166