On 17/03/2022 08:46, Sascha Hauer wrote:
No clue, just some things you could test:
- in BCH8_HW_ROMCODE barebox can't read what it has written itself,
right?
so it would seem yeah
- Can barebox read what Linux has written in this mode?
- Use Linux to write known data to a page:
seq 10000 > foo
flash_erase /dev/mtdx 0 0
nandwrite /dev/mtdx foo
- Read the same page in raw mode in barebox:
md -s /dev/nand0.raw 0+2112
- Write the same data with barebox
- Read again:
md -s /dev/nand0.raw 0+2112
- Compare the results
You could also just return successfully in chien() when the result would
fail and see what you read.
(I had to edit chien as you suggested, else md didn't print the results)
Writing from linux and barebox seems to give the same result:
barebox@Phytec phyCORE-OMAP4460:/ gpmc_nand0.eccmode=bch8_hw_romcode
barebox@Phytec phyCORE-OMAP4460:/ md -s /dev/nand0 0+2112 BCH decoding
failed BCH decoding failed BCH decoding failed BCH decoding failed BCH
decoding failed BCH decoding failed 00000000: 0a320a31 0a340a33
0a360a35 0a380a37 1.2.3.4.5.6.7.8. 00000010: 30310a39
0a31310a 310a3231 34310a33 9.10.11.12.13.14 00000020:
0a35310a 310a3631 38310a37 0a39310a .15.16.17.18.19.
00000030: 320a3032 32320a31 0a33320a 320a3432
20.21.22.23.24.2 00000040: 36320a35 0a37320a 320a3832
30330a39 5.26.27.28.29.30 00000050: 0a31330a 330a3233
34330a33 0a35330a .31.32.33.34.35. 00000060: 330a3633
38330a37 0a39330a 340a3034 36.37.38.39.40.4 00000070:
32340a31 0a33340a 340a3434 36340a35 1.42.43.44.45.46
00000080: 0a37340a 340a3834 30350a39 0a31350a
.47.48.49.50.51. 00000090: 350a3235 34350a33 0a35350a
350a3635 52.53.54.55.56.5 000000a0: 38350a37 0a39350a
360a3036 32360a31 7.58.59.60.61.62 000000b0: 0a33360a
360a3436 36360a35 0a37360a .63.64.65.66.67. 000000c0:
360a3836 30370a39 0a31370a 370a3237 68.69.70.71.72.7
000000d0: 34370a33 0a35370a 370a3637 38370a37
3.74.75.76.77.78 000000e0: 0a39370a 380a3038 32380a31
0a33380a .79.80.81.82.83. 000000f0: 380a3438 36380a35
0a37380a 380a3838 84.85.86.87.88.8 00000100: 30390a39
0a31390a 390a3239 34390a33 9.90.91.92.93.94 00000110:
0a35390a 390a3639 38390a37 0a39390a .95.96.97.98.99.
00000120: 0a303031 0a313031 0a323031 0a333031
100.101.102.103. 00000130: 0a343031 0a353031 0a363031
0a373031 104.105.106.107. 00000140: 0a383031 0a393031
0a303131 0a313131 108.109.110.111. 00000150: 0a323131
0a333131 0a343131 0a353131 112.113.114.115. 00000160:
0a363131 0a373131 0a383131 0a393131 116.117.118.119.
00000170: 0a303231 0a313231 0a323231 0a333231
120.121.122.123. 00000180: 0a343231 0a353231 0a363231
0a373231 124.125.126.127. 00000190: 0a383231 0a393231
0a303331 0a313331 128.129.130.131. 000001a0: 0a323331
0a333331 0a343331 0a353331 132.133.134.135. 000001b0:
0a363331 0a373331 0a383331 0a393331 136.137.138.139.
000001c0: 0a303431 0a313431 0a323431 0a333431
140.141.142.143. 000001d0: 0a343431 0a353431 0a363431
0a373431 144.145.146.147. 000001e0: 0a383431 0a393431
0a303531 0a313531 148.149.150.151. 000001f0: 0a323531
0a333531 0a343531 0a353531 152.153.154.155. 00000200:
0a363531 0a373531 0a383531 0a393531 156.157.158.159.
00000210: 0a303631 0a313631 0a323631 0a333631
160.161.162.163. 00000220: 0a343631 0a353631 0a363631
0a373631 164.165.166.167. 00000230: 0a383631 0a393631
0a303731 0a313731 168.169.170.171. 00000240: 0a323731
0a333731 0a343731 0a353731 172.173.174.175. 00000250:
0a363731 0a373731 0a383731 0a393731 176.177.178.179.
00000260: 0a303831 0a313831 0a323831 0a333831
180.181.182.183. 00000270: 0a343831 0a353831 0a363831
0a373831 184.185.186.187. 00000280: 0a383831 0a393831
0a303931 0a313931 188.189.190.191. 00000290: 0a323931
0a333931 0a343931 0a353931 192.193.194.195. 000002a0:
0a363931 0a373931 0a383931 0a393931 196.197.198.199.
000002b0: 0a303032 0a313032 0a323032 0a333032
200.201.202.203. 000002c0: 0a343032 0a353032 0a363032
0a373032 204.205.206.207. 000002d0: 0a383032 0a393032
0a303132 0a313132 208.209.210.211. 000002e0: 0a323132
0a333132 0a343132 0a353132 212.213.214.215. 000002f0:
0a363132 0a373132 0a383132 0a393132 216.217.218.219.
00000300: 0a303232 0a313232 0a323232 0a333232
220.221.222.223. 00000310: 0a343232 0a353232 0a363232
0a373232 224.225.226.227. 00000320: 0a383232 0a393232
0a303332 0a313332 228.229.230.231. 00000330: 0a323332
0a333332 0a343332 0a353332 232.233.234.235. 00000340:
0a363332 0a373332 0a383332 0a393332 236.237.238.239.
00000350: 0a303432 0a313432 0a323432 0a333432
240.241.242.243. 00000360: 0a343432 0a353432 0a363432
0a373432 244.245.246.247. 00000370: 0a383432 0a393432
0a303532 0a313532 248.249.250.251. 00000380: 0a323532
0a333532 0a343532 0a353532 252.253.254.255. 00000390:
0a363532 0a373532 0a383532 0a393532 256.257.258.259.
000003a0: 0a303632 0a313632 0a323632 0a333632
260.261.262.263. 000003b0: 0a343632 0a353632 0a363632
0a373632 264.265.266.267. 000003c0: 0a383632 0a393632
0a303732 0a313732 268.269.270.271. 000003d0: 0a323732
0a333732 0a343732 0a353732 272.273.274.275. 000003e0:
0a363732 0a373732 0a383732 0a393732 276.277.278.279.
000003f0: 0a303832 0a313832 0a323832 0a333832
280.281.282.283. 00000400: 0a343832 0a353832 0a363832
0a373832 284.285.286.287. 00000410: 0a383832 0a393832
0a303932 0a313932 288.289.290.291. 00000420: 0a323932
0a333932 0a343932 0a353932 292.293.294.295. 00000430:
0a363932 0a373932 0a383932 0a393932 296.297.298.299.
00000440: 0a303033 0a313033 0a323033 0a333033
300.301.302.303. 00000450: 0a343033 0a353033 0a363033
0a373033 304.305.306.307. 00000460: 0a383033 0a393033
0a303133 0a313133 308.309.310.311. 00000470: 0a323133
0a333133 0a343133 0a353133 312.313.314.315. 00000480:
0a363133 0a373133 0a383133 0a393133 316.317.318.319.
00000490: 0a303233 0a313233 0a323233 0a333233
320.321.322.323. 000004a0: 0a343233 0a353233 0a363233
0a373233 324.325.326.327. 000004b0: 0a383233 0a393233
0a303333 0a313333 328.329.330.331. 000004c0: 0a323333
0a333333 0a343333 0a353333 332.333.334.335. 000004d0:
0a363333 0a373333 0a383333 0a393333 336.337.338.339.
000004e0: 0a303433 0a313433 0a323433 0a333433
340.341.342.343. 000004f0: 0a343433 0a353433 0a363433
0a373433 344.345.346.347. 00000500: 0a383433 0a393433
0a303533 0a313533 348.349.350.351. 00000510: 0a323533
0a333533 0a343533 0a353533 352.353.354.355. 00000520:
0a363533 0a373533 0a383533 0a393533 356.357.358.359.
00000530: 0a303633 0a313633 0a323633 0a333633
360.361.362.363. 00000540: 0a343633 0a353633 0a363633
0a373633 364.365.366.367. 00000550: 0a383633 0a393633
0a303733 0a313733 368.369.370.371. 00000560: 0a323733
0a333733 0a343733 0a353733 372.373.374.375. 00000570:
0a363733 0a373733 0a383733 0a393733 376.377.378.379.
00000580: 0a303833 0a313833 0a323833 0a333833
380.381.382.383. 00000590: 0a343833 0a353833 0a363833
0a373833 384.385.386.387. 000005a0: 0a383833 0a393833
0a303933 0a313933 388.389.390.391. 000005b0: 0a323933
0a333933 0a343933 0a353933 392.393.394.395. 000005c0:
0a363933 0a373933 0a383933 0a393933 396.397.398.399.
000005d0: 0a303034 0a313034 0a323034 0a333034
400.401.402.403. 000005e0: 0a343034 0a353034 0a363034
0a373034 404.405.406.407. 000005f0: 0a383034 0a393034
0a303134 0a313134 408.409.410.411. 00000600: 0a323134
0a333134 0a343134 0a353134 412.413.414.415. 00000610:
0a363134 0a373134 0a383134 0a393134 416.417.418.419.
00000620: 0a303234 0a313234 0a323234 0a333234
420.421.422.423. 00000630: 0a343234 0a353234 0a363234
0a373234 424.425.426.427. 00000640: 0a383234 0a393234
0a303334 0a313334 428.429.430.431. 00000650: 0a323334
0a333334 0a343334 0a353334 432.433.434.435. 00000660:
0a363334 0a373334 0a383334 0a393334 436.437.438.439.
00000670: 0a303434 0a313434 0a323434 0a333434
440.441.442.443. 00000680: 0a343434 0a353434 0a363434
0a373434 444.445.446.447. 00000690: 0a383434 0a393434
0a303534 0a313534 448.449.450.451. 000006a0: 0a323534
0a333534 0a343534 0a353534 452.453.454.455. 000006b0:
0a363534 0a373534 0a383534 0a393534 456.457.458.459.
000006c0: 0a303634 0a313634 0a323634 0a333634
460.461.462.463. 000006d0: 0a343634 0a353634 0a363634
0a373634 464.465.466.467. 000006e0: 0a383634 0a393634
0a303734 0a313734 468.469.470.471. 000006f0: 0a323734
0a333734 0a343734 0a353734 472.473.474.475. 00000700:
0a363734 0a373734 0a383734 0a393734 476.477.478.479.
00000710: 0a303834 0a313834 0a323834 0a333834
480.481.482.483. 00000720: 0a343834 0a353834 0a363834
0a373834 484.485.486.487. 00000730: 0a383834 0a393834
0a303934 0a313934 488.489.490.491. 00000740: 0a323934
0a333934 0a343934 0a353934 492.493.494.495. 00000750:
0a363934 0a373934 0a383934 0a393934 496.497.498.499.
00000760: 0a303035 0a313035 0a323035 0a333035
500.501.502.503. 00000770: 0a343035 0a353035 0a363035
0a373035 504.505.506.507. 00000780: 0a383035 0a393035
0a303135 0a313135 508.509.510.511. 00000790: 0a323135
0a333135 0a343135 0a353135 512.513.514.515. 000007a0:
0a363135 0a373135 0a383135 0a393135 516.517.518.519.
000007b0: 0a303235 0a313235 0a323235 0a333235
520.521.522.523. 000007c0: 0a343235 0a353235 0a363235
0a373235 524.525.526.527. 000007d0: 0a383235 0a393235
0a303335 0a313335 528.529.530.531. 000007e0: 0a323335
0a333335 0a343335 0a353335 532.533.534.535. 000007f0:
0a363335 0a373335 0a383335 0a393335 536.537.538.539.
00000800: 0a303435 0a313435 0a323435 0a333435
540.541.542.543. 00000810: 0a343435 0a353435 0a363435
0a373435 544.545.546.547. 00000820: 0a383435 0a393435
0a303535 0a313535 548.549.550.551. 00000830: 0a323535
0a333535 0a343535 0a353535 552.553.554.555.
Because the data looks right(?), despite the error prints, I tried
ubiformat again from barebox, then booted linux from SD, and attached
the ubi nand partition in linux... which worked fine. All volumes and
data were there. Very confused about what's going wrong here. Tibault
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