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Disable probing for one variant of MCP55 to enable Tyan S2915

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Fix Tyan S2915 OEM board by commenting out MCP55 LPC bridge PCI ID
10de:0361 which is the secondary LPC bridge.

The same effect could be achieved by refusing to run enable_flash_mcp55
if the device class is not ISA bridge [0601].

Thanks to Alessandro Polverini, Joel Robertson, Nicolas Aveline, Phil
LoCascio and Nils-Helge Garli Hegvik for testing flashrom on hardware
and Michael Karcher for analyzing the factory BIOS for clues. In the
end, no board enable was needed and it was a pure chipset issue.

Corresponding to flashrom svn r1007.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
This commit is contained in:
Carl-Daniel Hailfinger 2010-05-22 07:27:16 +00:00
parent 4988420f7d
commit 33d7b6aa89
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
chipset_enable.c
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@ -1354,7 +1354,15 @@ const struct penable chipset_enables[] = {
{0x10de, 0x0262, NT, "NVIDIA", "MCP51", enable_flash_ck804},
{0x10de, 0x0263, NT, "NVIDIA", "MCP51", enable_flash_ck804},
{0x10de, 0x0360, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* M57SLI*/
{0x10de, 0x0361, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
/* 10de:0361 is present in Tyan S2915 OEM systems, but not connected to
* the flash chip. Instead, 10de:0364 is connected to the flash chip.
* Until we have PCI device class matching or some fallback mechanism,
* this is needed to get flashrom working on Tyan S2915 and maybe other
* dual-MCP55 boards.
*/
#if 0
{0x10de, 0x0361, NT, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
#endif
{0x10de, 0x0362, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0363, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */
{0x10de, 0x0364, OK, "NVIDIA", "MCP55", enable_flash_mcp55}, /* LPC */