aboutsummaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
blob: bf57ecd5d73a6218d1310da2695f4bb977710e57 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
=====================================================================
SEC 4 Device Tree Binding
Copyright (C) 2008-2011 Freescale Semiconductor Inc.

 CONTENTS
   -Overview
   -SEC 4 Node
   -Job Ring Node
   -Run Time Integrity Check (RTIC) Node
   -Run Time Integrity Check (RTIC) Memory Node
   -Secure Non-Volatile Storage (SNVS) Node
   -Full Example

NOTE: the SEC 4 is also known as Freescale's Cryptographic Accelerator
Accelerator and Assurance Module (CAAM).

=====================================================================
Overview

DESCRIPTION

SEC 4 h/w can process requests from 2 types of sources.
1. DPAA Queue Interface (HW interface between Queue Manager & SEC 4).
2. Job Rings (HW interface between cores & SEC 4 registers).

High Speed Data Path Configuration:

HW interface between QM & SEC 4 and also BM & SEC 4, on DPAA-enabled parts
such as the P4080.  The number of simultaneous dequeues the QI can make is
equal to the number of Descriptor Controller (DECO) engines in a particular
SEC version.  E.g., the SEC 4.0 in the P4080 has 5 DECOs and can thus
dequeue from 5 subportals simultaneously.

Job Ring Data Path Configuration:

Each JR is located on a separate 4k page, they may (or may not) be made visible
in the memory partition devoted to a particular core.  The P4080 has 4 JRs, so
up to 4 JRs can be configured; and all 4 JRs process requests in parallel.

=====================================================================
SEC 4 Node

Description

    Node defines the base address of the SEC 4 block.
    This block specifies the address range of all global
    configuration registers for the SEC 4 block.  It
    also receives interrupts from the Run Time Integrity Check
    (RTIC) function within the SEC 4 block.

PROPERTIES

   - compatible
      Usage: required
      Value type: <string>
      Definition: Must include "fsl,sec-v4.0"

   - #address-cells
       Usage: required
       Value type: <u32>
       Definition: A standard property.  Defines the number of cells
           for representing physical addresses in child nodes.

   - #size-cells
       Usage: required
       Value type: <u32>
       Definition: A standard property.  Defines the number of cells
           for representing the size of physical addresses in
           child nodes.

   - reg
      Usage: required
      Value type: <prop-encoded-array>
      Definition: A standard property.  Specifies the physical
          address and length of the SEC4 configuration registers.
          registers

   - ranges
       Usage: required
       Value type: <prop-encoded-array>
       Definition: A standard property.  Specifies the physical address
           range of the SEC 4.0 register space (-SNVS not included).  A
           triplet that includes the child address, parent address, &
           length.

   - interrupts
      Usage: required
      Value type: <prop_encoded-array>
      Definition:  Specifies the interrupts generated by this
           device.  The value of the interrupts property
           consists of one interrupt specifier. The format
           of the specifier is defined by the binding document
           describing the node's interrupt parent.

   - interrupt-parent
      Usage: (required if interrupt property is defined)
      Value type: <phandle>
      Definition: A single <phandle> value that points
          to the interrupt parent to which the child domain
          is being mapped.

   Note: All other standard properties (see the ePAPR) are allowed
   but are optional.


EXAMPLE
	crypto@300000 {
		compatible = "fsl,sec-v4.0";
		#address-cells = <1>;
		#size-cells = <1>;
		reg = <0x300000 0x10000>;
		ranges = <0 0x300000 0x10000>;
		interrupt-parent = <&mpic>;
		interrupts = <92 2>;
	};

=====================================================================
Job Ring (JR) Node

    Child of the crypto node defines data processing interface to SEC 4
    across the peripheral bus for purposes of processing
    cryptographic descriptors. The specified address
    range can be made visible to one (or more) cores.
    The interrupt defined for this node is controlled within
    the address range of this node.

  - compatible
      Usage: required
      Value type: <string>
      Definition: Must include "fsl,sec-v4.0-job-ring"

  - reg
      Usage: required
      Value type: <prop-encoded-array>
      Definition: Specifies a two JR parameters:  an offset from
          the parent physical address and the length the JR registers.

   - fsl,liodn
       Usage: optional-but-recommended
       Value type: <prop-encoded-array>
       Definition:
           Specifies the LIODN to be used in conjunction with
           the ppid-to-liodn table that specifies the PPID to LIODN mapping.
           Needed if the PAMU is used.  Value is a 12 bit value
           where value is a LIODN ID for this JR. This property is
           normally set by boot firmware.

   - interrupts
      Usage: required
      Value type: <prop_encoded-array>
      Definition:  Specifies the interrupts generated by this
           device.  The value of the interrupts property
           consists of one interrupt specifier. The format
           of the specifier is defined by the binding document
           describing the node's interrupt parent.

   - interrupt-parent
      Usage: (required if interrupt property is defined)
      Value type: <phandle>
      Definition: A single <phandle> value that points
          to the interrupt parent to which the child domain
          is being mapped.

EXAMPLE
	jr@1000 {
		compatible = "fsl,sec-v4.0-job-ring";
		reg = <0x1000 0x1000>;
		fsl,liodn = <0x081>;
		interrupt-parent = <&mpic>;
		interrupts = <88 2>;
	};


=====================================================================
Run Time Integrity Check (RTIC) Node

  Child node of the crypto node.  Defines a register space that
  contains up to 5 sets of addresses and their lengths (sizes) that
  will be checked at run time.  After an initial hash result is
  calculated, these addresses are checked by HW to monitor any
  change.  If any memory is modified, a Security Violation is
  triggered (see SNVS definition).


  - compatible
      Usage: required
      Value type: <string>
      Definition: Must include "fsl,sec-v4.0-rtic".

   - #address-cells
       Usage: required
       Value type: <u32>
       Definition: A standard property.  Defines the number of cells
           for representing physical addresses in child nodes.  Must
           have a value of 1.

   - #size-cells
       Usage: required
       Value type: <u32>
       Definition: A standard property.  Defines the number of cells
           for representing the size of physical addresses in
           child nodes.  Must have a value of 1.

  - reg
      Usage: required
      Value type: <prop-encoded-array>
      Definition: A standard property.  Specifies a two parameters:
          an offset from the parent physical address and the length
          the SEC4 registers.

   - ranges
       Usage: required
       Value type: <prop-encoded-array>
       Definition: A standard property.  Specifies the physical address
           range of the SEC 4 register space (-SNVS not included).  A
           triplet that includes the child address, parent address, &
           length.

EXAMPLE
	rtic@6000 {
		compatible = "fsl,sec-v4.0-rtic";
		#address-cells = <1>;
		#size-cells = <1>;
		reg = <0x6000 0x100>;
		ranges = <0x0 0x6100 0xe00>;
	};

=====================================================================
Run Time Integrity Check (RTIC) Memory Node
  A child node that defines individual RTIC memory regions that are used to
  perform run-time integrity check of memory areas that should not modified.
  The node defines a register that contains the memory address &
  length (combined) and a second register that contains the hash result
  in big endian format.

  - compatible
      Usage: required
      Value type: <string>
      Definition: Must include "fsl,sec-v4.0-rtic-memory".

  - reg
      Usage: required
      Value type: <prop-encoded-array>
      Definition: A standard property.  Specifies two parameters:
          an offset from the parent physical address and the length:

          1. The location of the RTIC memory address & length registers.
          2. The location RTIC hash result.

  - fsl,rtic-region
       Usage: optional-but-recommended
       Value type: <prop-encoded-array>
       Definition:
           Specifies the HW address (36 bit address) for this region
           followed by the length of the HW partition to be checked;
           the address is represented as a 64 bit quantity followed
           by a 32 bit length.

   - fsl,liodn
       Usage: optional-but-recommended
       Value type: <prop-encoded-array>
       Definition:
           Specifies the LIODN to be used in conjunction with
           the ppid-to-liodn table that specifies the PPID to LIODN
           mapping.  Needed if the PAMU is used.  Value is a 12 bit value
           where value is a LIODN ID for this RTIC memory region. This
           property is normally set by boot firmware.

EXAMPLE
	rtic-a@0 {
		compatible = "fsl,sec-v4.0-rtic-memory";
		reg = <0x00 0x20 0x100 0x80>;
		fsl,liodn   = <0x03c>;
		fsl,rtic-region  = <0x12345678 0x12345678 0x12345678>;
	};

=====================================================================
Secure Non-Volatile Storage (SNVS) Node

    Node defines address range and the associated
    interrupt for the SNVS function.  This function
    monitors security state information & reports
    security violations.

  - compatible
      Usage: required
      Value type: <string>
      Definition: Must include "fsl,sec-v4.0-mon".

  - reg
      Usage: required
      Value type: <prop-encoded-array>
      Definition: A standard property.  Specifies the physical
          address and length of the SEC4 configuration
          registers.

   - interrupts
      Usage: required
      Value type: <prop_encoded-array>
      Definition:  Specifies the interrupts generated by this
           device.  The value of the interrupts property
           consists of one interrupt specifier. The format
           of the specifier is defined by the binding document
           describing the node's interrupt parent.

   - interrupt-parent
      Usage: (required if interrupt property is defined)
      Value type: <phandle>
      Definition: A single <phandle> value that points
          to the interrupt parent to which the child domain
          is being mapped.

EXAMPLE
	sec_mon@314000 {
		compatible = "fsl,sec-v4.0-mon";
		reg = <0x314000 0x1000>;
		interrupt-parent = <&mpic>;
		interrupts = <93 2>;
	};

=====================================================================
FULL EXAMPLE

	crypto: crypto@300000 {
		compatible = "fsl,sec-v4.0";
		#address-cells = <1>;
		#size-cells = <1>;
		reg = <0x300000 0x10000>;
		ranges = <0 0x300000 0x10000>;
		interrupt-parent = <&mpic>;
		interrupts = <92 2>;

		sec_jr0: jr@1000 {
			compatible = "fsl,sec-v4.0-job-ring";
			reg = <0x1000 0x1000>;
			interrupt-parent = <&mpic>;
			interrupts = <88 2>;
		};

		sec_jr1: jr@2000 {
			compatible = "fsl,sec-v4.0-job-ring";
			reg = <0x2000 0x1000>;
			interrupt-parent = <&mpic>;
			interrupts = <89 2>;
		};

		sec_jr2: jr@3000 {
			compatible = "fsl,sec-v4.0-job-ring";
			reg = <0x3000 0x1000>;
			interrupt-parent = <&mpic>;
			interrupts = <90 2>;
		};

		sec_jr3: jr@4000 {
			compatible = "fsl,sec-v4.0-job-ring";
			reg = <0x4000 0x1000>;
			interrupt-parent = <&mpic>;
			interrupts = <91 2>;
		};

		rtic@6000 {
			compatible = "fsl,sec-v4.0-rtic";
			#address-cells = <1>;
			#size-cells = <1>;
			reg = <0x6000 0x100>;
			ranges = <0x0 0x6100 0xe00>;

			rtic_a: rtic-a@0 {
				compatible = "fsl,sec-v4.0-rtic-memory";
				reg = <0x00 0x20 0x100 0x80>;
			};

			rtic_b: rtic-b@20 {
				compatible = "fsl,sec-v4.0-rtic-memory";
				reg = <0x20 0x20 0x200 0x80>;
			};

			rtic_c: rtic-c@40 {
				compatible = "fsl,sec-v4.0-rtic-memory";
				reg = <0x40 0x20 0x300 0x80>;
			};

			rtic_d: rtic-d@60 {
				compatible = "fsl,sec-v4.0-rtic-memory";
				reg = <0x60 0x20 0x500 0x80>;
			};
		};
	};

	sec_mon: sec_mon@314000 {
		compatible = "fsl,sec-v4.0-mon";
		reg = <0x314000 0x1000>;
		interrupt-parent = <&mpic>;
		interrupts = <93 2>;
	};

=====================================================================