On 06.02.2008 02:09, Carl-Daniel Hailfinger wrote:
> On 04.02.2008 22:04, Chris Lingard wrote:
>
>> I recently found someone who could do the work of modifying the
>> motherboard, Harald kindly posted me the chip.
>>
>> The machine came back and it would not boot with the switch up
>>
>> I then probably made a mistake, I used the BIOS itself to dump the
>> factory BIOS to several floppies; then flipped the switch and wrote the
>> factory BIOS to the new chip. The machine now boots from either BIOS.
>>
>> Using flashrom to detect the chip I get:
>>
>> Calibrating delay loop... 853M loops per second. OK.
>> No coreboot table found.
>> Found chipset "NVIDIA MCP55", enabling flash write... OK.
>> Found board "GIGABYTE GA-M57SLI-S4": enabling flash write... Serial
>> flash segment 0xfffe0000-0xffffffff enabled
>> Serial flash segment 0x000e0000-0x000fffff enabled
>> Serial flash segment 0xffee0000-0xffefffff disabled
>> Serial flash segment 0xfff80000-0xfffeffff enabled
>> LPC write to serial flash enabled
>> serial flash pin 29
>> OK.
>>
>> <snip>
>>
>> Probing for MX25L4005, 512 KB
>> RDID returned 7f 9d 7e.
>> probe_spi: id1 0x7f, id2 0x9d7e
>>
>> <snip>
>>
>> No EEPROM/flash device found.
>>
>> The factory BIOS is the same except that it returns
>>
>> Probing for MX25L4005, 512 KB
>> RDID returned 7f 9d 7e.
>>
>> <snip>
>>
>> No EEPROM/flash device found.
>>
>>
>
> Please specify which flash chips you are using. The snipped logs are
> extremely misleading, especially because the RDID output contradicts the
> MX25L4005 claim in the mail subject.
> The RDID you are seeing is from a Pm25LV040 (7f 9d 7e).
>
>
>> The block diagram shows the BIOS connected directly to the 570-SLI and
>> not via the 8716
>>
>>
>
> That block diagram is correct for v1.x of the board.
>
>
>> Could someone please give me a clue of either what I have missed out, or
>> how to proceed?
>>
>>
>
> We need to know the exact flash chip types before we can proceed.
>
Can you try the patch below? We need full output from flashrom -V.
Signed-off-by: Carl-Daniel Hailfinger <[EMAIL PROTECTED]>
Index: flashrom-spi_pm25/flash.h
===================================================================
--- flashrom-spi_pm25/flash.h (Revision 3086)
+++ flashrom-spi_pm25/flash.h (Arbeitskopie)
@@ -158,7 +158,8 @@
/* Programmable Micro Corp is listed in JEP106W in bank 2, so it should have
* a 0x7F continuation code prefix.
*/
-#define PMC_ID 0x9D /* PMC */
+#define PMC_ID 0x7F9D /* PMC */
+#define PMC_ID_NOPREFIX 0x9D /* PMC, missing 0x7F prefix */
#define PMC_49FL002 0x6D
#define PMC_49FL004 0x6E
Index: flashrom-spi_pm25/flashchips.c
===================================================================
--- flashrom-spi_pm25/flashchips.c (Revision 3086)
+++ flashrom-spi_pm25/flashchips.c (Arbeitskopie)
@@ -100,9 +100,9 @@
probe_49lfxxxc, erase_49lfxxxc, write_49lfxxxc},
{"SST49LF160C", SST_ID, SST_49LF160C, 2048, 4 * 1024 ,
probe_49lfxxxc, erase_49lfxxxc, write_49lfxxxc},
- {"Pm49FL002", PMC_ID, PMC_49FL002, 256, 16 * 1024,
+ {"Pm49FL002", PMC_ID_NOPREFIX, PMC_49FL002, 256, 16 * 1024,
probe_jedec, erase_chip_jedec, write_49fl004},
- {"Pm49FL004", PMC_ID, PMC_49FL004, 512, 64 * 1024,
+ {"Pm49FL004", PMC_ID_NOPREFIX, PMC_49FL004, 512, 64 * 1024,
probe_jedec, erase_chip_jedec, write_49fl004},
{"W29C011", WINBOND_ID, W_29C011, 128, 128,
probe_jedec, erase_chip_jedec, write_jedec},
@@ -205,6 +205,8 @@
probe_spi, NULL, NULL},
{"MX unknown SPI chip", MX_ID, GENERIC_DEVICE_ID, 0, 0,
probe_spi, NULL, NULL},
+ {"PMC unknown SPI chip", PMC_ID, GENERIC_DEVICE_ID, 0, 0,
+ probe_spi, NULL, NULL},
{"SST unknown SPI chip", SST_ID, GENERIC_DEVICE_ID, 0, 0,
probe_spi, NULL, NULL},
{"ST unknown SPI chip", ST_ID, GENERIC_DEVICE_ID, 0, 0,
Index: flashrom-spi_pm25/spi.c
===================================================================
--- flashrom-spi_pm25/spi.c (Revision 3086)
+++ flashrom-spi_pm25/spi.c (Arbeitskopie)
@@ -281,8 +281,14 @@
uint8_t manuf_id;
uint16_t model_id;
if (!generic_spi_rdid(readarr)) {
- manuf_id = readarr[0];
- model_id = (readarr[1] << 8) | readarr[2];
+ /* Check if this is a continuation vendor ID */
+ if (readarr[0] == 0x7f) {
+ manuf_id = (readarr[0] << 8) | readarr[1];
+ model_id = readarr[2];
+ } else {
+ manuf_id = readarr[0];
+ model_id = (readarr[1] << 8) | readarr[2];
+ }
printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__,
manuf_id, model_id);
if (manuf_id == flash->manufacture_id &&
model_id == flash->model_id) {
--
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