On Wed, Nov 28, 2007 at 12:57:01AM +0100, Carl-Daniel Hailfinger wrote: > On 23.11.2007 20:31, Andreas B. Mundt wrote: > >>> Does flashrom -r actually return a file of all 0xFFs after the erase? > >>> > >>> > >> In fact it does not. Most of the file looks as if it is still the > >> linuxbios.rom. > >> > >> > > > > For me, writing seems to work only from address 0x000f0000 upwards. > > This is part of the ROM content read after writing 1M of zeros (prior > > to the zero-writing, LB was on the chip): > > > > 000eff10: 80f9 1a76 0d0f b6c9 b301 83e9 08d3 e383 ...v............ > > 000eff20: cb01 8a47 0131 d23c 0188 856f ffff ff76 ...G.1.<...o...v > > 000eff30: 110f b68d 5fff ffff b201 83e9 08d3 e283 ...._........... > > 000eff40: ca01 80bd 5eff ffff 0074 1289 d801 db83 ....^....t...... > > 000eff50: e001 09c3 89d0 83e0 0101 d209 c281 e201 ................ > > 000eff60: 00f8 1f8b 8d58 ffff ff89 de89 9560 ffff .....X.......`.. > > 000eff70: ff8b 9538 ffff ff81 e601 00f8 1f8d 04cd ...8............ > > 000eff80: 4000 0000 b9f8 0c00 008b 520c c1ea 0409 @.........R..... > > 000eff90: d025 fcff ff7f 8995 64ff ffff 0d00 0000 .%......d....... > > 000effa0: 8089 caef 89f0 b2fc ef8b 9d58 ffff ff89 ...........X.... > > 000effb0: ca01 db8d 049d 4400 0000 0b85 64ff ffff ......D.....d... > > 000effc0: 25fc ffff 7f0d 0000 0080 ef8b 8560 ffff %............`.. > > 000effd0: ffb2 fcef 80bd 6fff ffff 0475 428d 049d ......o....uB... > > 000effe0: 5000 0000 89ca 0b85 64ff ffff 25fc ffff P.......d...%... > > 000efff0: 7f0d 0000 0080 ef89 f0b2 fcef 8d04 9d54 ...............T > > 000f0000: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0010: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0020: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0030: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0040: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0050: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0060: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0070: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0080: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f0090: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f00a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f00b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > 000f00c0: 0000 0000 0000 0000 0000 0000 0000 0000 ................ > > > > This is the same part afer erase: > > > > 000eff10: 80f9 1a76 0d0f b6c9 b301 83e9 08d3 e383 ...v............ > > 000eff20: cb01 8a47 0131 d23c 0188 856f ffff ff76 ...G.1.<...o...v > > 000eff30: 110f b68d 5fff ffff b201 83e9 08d3 e283 ...._........... > > 000eff40: ca01 80bd 5eff ffff 0074 1289 d801 db83 ....^....t...... > > 000eff50: e001 09c3 89d0 83e0 0101 d209 c281 e201 ................ > > 000eff60: 00f8 1f8b 8d58 ffff ff89 de89 9560 ffff .....X.......`.. > > 000eff70: ff8b 9538 ffff ff81 e601 00f8 1f8d 04cd ...8............ > > 000eff80: 4000 0000 b9f8 0c00 008b 520c c1ea 0409 @.........R..... > > 000eff90: d025 fcff ff7f 8995 64ff ffff 0d00 0000 .%......d....... > > 000effa0: 8089 caef 89f0 b2fc ef8b 9d58 ffff ff89 ...........X.... > > 000effb0: ca01 db8d 049d 4400 0000 0b85 64ff ffff ......D.....d... > > 000effc0: 25fc ffff 7f0d 0000 0080 ef8b 8560 ffff %............`.. > > 000effd0: ffb2 fcef 80bd 6fff ffff 0475 428d 049d ......o....uB... > > 000effe0: 5000 0000 89ca 0b85 64ff ffff 25fc ffff P.......d...%... > > 000efff0: 7f0d 0000 0080 ef89 f0b2 fcef 8d04 9d54 ...............T > > 000f0000: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0010: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0020: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0030: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0040: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0050: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0060: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0070: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0080: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f0090: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f00a0: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f00b0: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f00c0: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > 000f00d0: ffff ffff ffff ffff ffff ffff ffff ffff ................ > > > > The flashing speed seems to be rather slow compared to > > flashing speed after booting with proprietary BIOS. At block 0x000f0000 > > the speed suddenly increases dramatically. > > > > With proprietary BIOS anything seems to work so far :-( > > > > Is that still the case? This observation may be the key to understand > what's going on. >
I verified the above again, it is still absolutely correct on my board: Erasing and writing works fine starting from 0x000f0000, but up to this address nothing happens at all. Thanks, Andi -- linuxbios mailing list linuxbios@linuxbios.org http://www.linuxbios.org/mailman/listinfo/linuxbios