1 /*
2  * Copyright 2010-2011 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <command.h>
9 #include <linux/compiler.h>
10 #include <fsl_errata.h>
11 #include <asm/processor.h>
12 #include <fsl_usb.h>
13 #include "fsl_corenet_serdes.h"
14 
15 #ifdef CONFIG_SYS_FSL_ERRATUM_A004849
16 /*
17  * This work-around is implemented in PBI, so just check to see if the
18  * work-around was actually applied.  To do this, we check for specific data
19  * at specific addresses in DCSR.
20  *
21  * Array offsets[] contains a list of offsets within DCSR.  According to the
22  * erratum document, the value at each offset should be 2.
23  */
24 static void check_erratum_a4849(uint32_t svr)
25 {
26 	void __iomem *dcsr = (void *)CONFIG_SYS_DCSRBAR + 0xb0000;
27 	unsigned int i;
28 
29 #if defined(CONFIG_PPC_P2041) || defined(CONFIG_PPC_P3041)
30 	static const uint8_t offsets[] = {
31 		0x50, 0x54, 0x58, 0x90, 0x94, 0x98
32 	};
33 #endif
34 #ifdef CONFIG_PPC_P4080
35 	static const uint8_t offsets[] = {
36 		0x60, 0x64, 0x68, 0x6c, 0xa0, 0xa4, 0xa8, 0xac
37 	};
38 #endif
39 	uint32_t x108; /* The value that should be at offset 0x108 */
40 
41 	for (i = 0; i < ARRAY_SIZE(offsets); i++) {
42 		if (in_be32(dcsr + offsets[i]) != 2) {
43 			printf("Work-around for Erratum A004849 is not enabled\n");
44 			return;
45 		}
46 	}
47 
48 #if defined(CONFIG_PPC_P2041) || defined(CONFIG_PPC_P3041)
49 	x108 = 0x12;
50 #endif
51 
52 #ifdef CONFIG_PPC_P4080
53 	/*
54 	 * For P4080, the erratum document says that the value at offset 0x108
55 	 * should be 0x12 on rev2, or 0x1c on rev3.
56 	 */
57 	if (SVR_MAJ(svr) == 2)
58 		x108 = 0x12;
59 	if (SVR_MAJ(svr) == 3)
60 		x108 = 0x1c;
61 #endif
62 
63 	if (in_be32(dcsr + 0x108) != x108) {
64 		printf("Work-around for Erratum A004849 is not enabled\n");
65 		return;
66 	}
67 
68 	/* Everything matches, so the erratum work-around was applied */
69 
70 	printf("Work-around for Erratum A004849 enabled\n");
71 }
72 #endif
73 
74 #ifdef CONFIG_SYS_FSL_ERRATUM_A004580
75 /*
76  * This work-around is implemented in PBI, so just check to see if the
77  * work-around was actually applied.  To do this, we check for specific data
78  * at specific addresses in the SerDes register block.
79  *
80  * The work-around says that for each SerDes lane, write BnTTLCRy0 =
81  * 0x1B00_0001, Register 2 = 0x0088_0000, and Register 3 = 0x4000_0000.
82 
83  */
84 static void check_erratum_a4580(uint32_t svr)
85 {
86 	const serdes_corenet_t __iomem *srds_regs =
87 		(void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
88 	unsigned int lane;
89 
90 	for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
91 		if (serdes_lane_enabled(lane)) {
92 			const struct serdes_lane __iomem *srds_lane =
93 				&srds_regs->lane[serdes_get_lane_idx(lane)];
94 
95 			/*
96 			 * Verify that the values we were supposed to write in
97 			 * the PBI are actually there.  Also, the lower 15
98 			 * bits of res4[3] should be the same as the upper 15
99 			 * bits of res4[1].
100 			 */
101 			if ((in_be32(&srds_lane->ttlcr0) != 0x1b000001) ||
102 			    (in_be32(&srds_lane->res4[1]) != 0x880000) ||
103 			    (in_be32(&srds_lane->res4[3]) != 0x40000044)) {
104 				printf("Work-around for Erratum A004580 is "
105 				       "not enabled\n");
106 				return;
107 			}
108 		}
109 	}
110 
111 	/* Everything matches, so the erratum work-around was applied */
112 
113 	printf("Work-around for Erratum A004580 enabled\n");
114 }
115 #endif
116 
117 #ifdef CONFIG_SYS_FSL_ERRATUM_A007212
118 /*
119  * This workaround can be implemented in PBI, or by u-boot.
120  */
121 static void check_erratum_a007212(void)
122 {
123 	u32 __iomem *plldgdcr = (void *)(CONFIG_SYS_DCSRBAR + 0x21c20);
124 
125 	if (in_be32(plldgdcr) & 0x1fe) {
126 		/* check if PLL ratio is set by workaround */
127 		puts("Work-around for Erratum A007212 enabled\n");
128 	}
129 }
130 #endif
131 
132 static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
133 {
134 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011
135 	extern int enable_cpu_a011_workaround;
136 #endif
137 	__maybe_unused u32 svr = get_svr();
138 
139 #if defined(CONFIG_FSL_SATA_V2) && defined(CONFIG_FSL_SATA_ERRATUM_A001)
140 	if (IS_SVR_REV(svr, 1, 0)) {
141 		switch (SVR_SOC_VER(svr)) {
142 		case SVR_P1013:
143 		case SVR_P1022:
144 			puts("Work-around for Erratum SATA A001 enabled\n");
145 		}
146 	}
147 #endif
148 
149 #if defined(CONFIG_SYS_P4080_ERRATUM_SERDES8)
150 	puts("Work-around for Erratum SERDES8 enabled\n");
151 #endif
152 #if defined(CONFIG_SYS_P4080_ERRATUM_SERDES9)
153 	puts("Work-around for Erratum SERDES9 enabled\n");
154 #endif
155 #if defined(CONFIG_SYS_P4080_ERRATUM_SERDES_A005)
156 	puts("Work-around for Erratum SERDES-A005 enabled\n");
157 #endif
158 #if defined(CONFIG_SYS_P4080_ERRATUM_CPU22)
159 	if (SVR_MAJ(svr) < 3)
160 		puts("Work-around for Erratum CPU22 enabled\n");
161 #endif
162 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011
163 	/*
164 	 * NMG_CPU_A011 applies to P4080 rev 1.0, 2.0, fixed in 3.0
165 	 * also applies to P3041 rev 1.0, 1.1, P2041 rev 1.0, 1.1
166 	 * The SVR has been checked by cpu_init_r().
167 	 */
168 	if (enable_cpu_a011_workaround)
169 		puts("Work-around for Erratum CPU-A011 enabled\n");
170 #endif
171 #if defined(CONFIG_SYS_FSL_ERRATUM_CPU_A003999)
172 	puts("Work-around for Erratum CPU-A003999 enabled\n");
173 #endif
174 #if defined(CONFIG_SYS_FSL_ERRATUM_DDR_A003474)
175 	puts("Work-around for Erratum DDR-A003474 enabled\n");
176 #endif
177 #if defined(CONFIG_SYS_FSL_ERRATUM_DDR_MSYNC_IN)
178 	puts("Work-around for DDR MSYNC_IN Erratum enabled\n");
179 #endif
180 #if defined(CONFIG_SYS_FSL_ERRATUM_ESDHC111)
181 	puts("Work-around for Erratum ESDHC111 enabled\n");
182 #endif
183 #ifdef CONFIG_SYS_FSL_ERRATUM_A004468
184 	puts("Work-around for Erratum A004468 enabled\n");
185 #endif
186 #if defined(CONFIG_SYS_FSL_ERRATUM_ESDHC135)
187 	puts("Work-around for Erratum ESDHC135 enabled\n");
188 #endif
189 #if defined(CONFIG_SYS_FSL_ERRATUM_ESDHC13)
190 	if (SVR_MAJ(svr) < 3)
191 		puts("Work-around for Erratum ESDHC13 enabled\n");
192 #endif
193 #if defined(CONFIG_SYS_FSL_ERRATUM_ESDHC_A001)
194 	puts("Work-around for Erratum ESDHC-A001 enabled\n");
195 #endif
196 #ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A002
197 	puts("Work-around for Erratum CPC-A002 enabled\n");
198 #endif
199 #ifdef CONFIG_SYS_FSL_ERRATUM_CPC_A003
200 	puts("Work-around for Erratum CPC-A003 enabled\n");
201 #endif
202 #ifdef CONFIG_SYS_FSL_ERRATUM_ELBC_A001
203 	puts("Work-around for Erratum ELBC-A001 enabled\n");
204 #endif
205 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR_A003
206 	puts("Work-around for Erratum DDR-A003 enabled\n");
207 #endif
208 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR_115
209 	puts("Work-around for Erratum DDR115 enabled\n");
210 #endif
211 #ifdef CONFIG_SYS_FSL_ERRATUM_DDR111_DDR134
212 	puts("Work-around for Erratum DDR111 enabled\n");
213 	puts("Work-around for Erratum DDR134 enabled\n");
214 #endif
215 #ifdef CONFIG_SYS_FSL_ERRATUM_IFC_A002769
216 	puts("Work-around for Erratum IFC-A002769 enabled\n");
217 #endif
218 #ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549
219 	puts("Work-around for Erratum P1010-A003549 enabled\n");
220 #endif
221 #ifdef CONFIG_SYS_FSL_ERRATUM_IFC_A003399
222 	puts("Work-around for Erratum IFC A-003399 enabled\n");
223 #endif
224 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_DDR120
225 	if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0))
226 		puts("Work-around for Erratum NMG DDR120 enabled\n");
227 #endif
228 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_LBC103
229 	puts("Work-around for Erratum NMG_LBC103 enabled\n");
230 #endif
231 #ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
232 	if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0))
233 		puts("Work-around for Erratum NMG ETSEC129 enabled\n");
234 #endif
235 #ifdef CONFIG_SYS_FSL_ERRATUM_A004508
236 	puts("Work-around for Erratum A004508 enabled\n");
237 #endif
238 #ifdef CONFIG_SYS_FSL_ERRATUM_A004510
239 	puts("Work-around for Erratum A004510 enabled\n");
240 #endif
241 #ifdef CONFIG_SYS_FSL_ERRATUM_SRIO_A004034
242 	puts("Work-around for Erratum SRIO-A004034 enabled\n");
243 #endif
244 #ifdef CONFIG_SYS_FSL_ERRATUM_A_004934
245 	puts("Work-around for Erratum A004934 enabled\n");
246 #endif
247 #ifdef CONFIG_SYS_FSL_ERRATUM_A005871
248 	if (IS_SVR_REV(svr, 1, 0))
249 		puts("Work-around for Erratum A005871 enabled\n");
250 #endif
251 #ifdef CONFIG_SYS_FSL_ERRATUM_A006475
252 	if (SVR_MAJ(get_svr()) == 1)
253 		puts("Work-around for Erratum A006475 enabled\n");
254 #endif
255 #ifdef CONFIG_SYS_FSL_ERRATUM_A006384
256 	if (SVR_MAJ(get_svr()) == 1)
257 		puts("Work-around for Erratum A006384 enabled\n");
258 #endif
259 #ifdef CONFIG_SYS_FSL_ERRATUM_A004849
260 	/* This work-around is implemented in PBI, so just check for it */
261 	check_erratum_a4849(svr);
262 #endif
263 #ifdef CONFIG_SYS_FSL_ERRATUM_A004580
264 	/* This work-around is implemented in PBI, so just check for it */
265 	check_erratum_a4580(svr);
266 #endif
267 #ifdef CONFIG_SYS_P4080_ERRATUM_PCIE_A003
268 	puts("Work-around for Erratum PCIe-A003 enabled\n");
269 #endif
270 #ifdef CONFIG_SYS_FSL_ERRATUM_USB14
271 	puts("Work-around for Erratum USB14 enabled\n");
272 #endif
273 #ifdef CONFIG_SYS_FSL_ERRATUM_A007186
274 	if (has_erratum_a007186())
275 		puts("Work-around for Erratum A007186 enabled\n");
276 #endif
277 #ifdef CONFIG_SYS_FSL_ERRATUM_A006593
278 	puts("Work-around for Erratum A006593 enabled\n");
279 #endif
280 #ifdef CONFIG_SYS_FSL_ERRATUM_A006379
281 	if (has_erratum_a006379())
282 		puts("Work-around for Erratum A006379 enabled\n");
283 #endif
284 #ifdef CONFIG_SYS_FSL_ERRATUM_SEC_A003571
285 	if (IS_SVR_REV(svr, 1, 0))
286 		puts("Work-around for Erratum A003571 enabled\n");
287 #endif
288 #ifdef CONFIG_SYS_FSL_ERRATUM_A005812
289 	puts("Work-around for Erratum A-005812 enabled\n");
290 #endif
291 #ifdef CONFIG_SYS_FSL_ERRATUM_A005125
292 	puts("Work-around for Erratum A005125 enabled\n");
293 #endif
294 #ifdef CONFIG_SYS_FSL_ERRATUM_A007075
295 	if (has_erratum_a007075())
296 		puts("Work-around for Erratum A007075 enabled\n");
297 #endif
298 #ifdef CONFIG_SYS_FSL_ERRATUM_A007798
299 	if (has_erratum_a007798())
300 		puts("Work-around for Erratum A007798 enabled\n");
301 #endif
302 #ifdef CONFIG_SYS_FSL_ERRATUM_A004477
303 	if (has_erratum_a004477())
304 		puts("Work-around for Erratum A004477 enabled\n");
305 #endif
306 #ifdef CONFIG_SYS_FSL_ERRATUM_I2C_A004447
307 	if ((SVR_SOC_VER(svr) == SVR_8548 && IS_SVR_REV(svr, 3, 1)) ||
308 	    (SVR_REV(svr) <= CONFIG_SYS_FSL_A004447_SVR_REV))
309 		puts("Work-around for Erratum I2C-A004447 enabled\n");
310 #endif
311 #ifdef CONFIG_SYS_FSL_ERRATUM_A006261
312 	if (has_erratum_a006261())
313 		puts("Work-around for Erratum A006261 enabled\n");
314 #endif
315 #ifdef CONFIG_SYS_FSL_ERRATUM_A007212
316 	check_erratum_a007212();
317 #endif
318 #ifdef CONFIG_SYS_FSL_ERRATUM_A005434
319 	puts("Work-around for Erratum A-005434 enabled\n");
320 #endif
321 #if defined(CONFIG_SYS_FSL_ERRATUM_A008044) && \
322 	defined(CONFIG_A008044_WORKAROUND)
323 	if (IS_SVR_REV(svr, 1, 0))
324 		puts("Work-around for Erratum A-008044 enabled\n");
325 #endif
326 #if defined(CONFIG_SYS_FSL_B4860QDS_XFI_ERR) && defined(CONFIG_B4860QDS)
327 	puts("Work-around for Erratum XFI on B4860QDS enabled\n");
328 #endif
329 #ifdef CONFIG_SYS_FSL_ERRATUM_A009663
330 	puts("Work-around for Erratum A009663 enabled\n");
331 #endif
332 
333 	return 0;
334 }
335 
336 U_BOOT_CMD(
337 	errata, 1, 0,	do_errata,
338 	"Report errata workarounds",
339 	""
340 );
341