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