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x86: Support a fake PCI device with of-platdata-inst

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With TPL we don't need full PCI support and it adds to code size. Instead,
a simple_bus driver is good enough to be able to read and write the PCI
config and do a little basic setup.

So at present there are two drivers in U-Boot called pci_x86. One is in
UCLASS_PCI, used in SPL and U-Boot proper. The other is in
UCLASS_SIMPLE_BUS and used only in TPL.

Add a tag to tell dtoc about this, so it knows which one to use when
generating the devices and uclasses.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2021-03-15 17:25:48 +13:00
parent 763ce51bc3
commit 1d3daaa681
1 changed files with 1 additions and 0 deletions
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arch/x86/lib/tpl.c
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@ -150,5 +150,6 @@ U_BOOT_DRIVER(pci_x86) = {
.name = "pci_x86",
.id = UCLASS_SIMPLE_BUS,
.of_match = of_match_ptr(tpl_fake_pci_ids),
DM_PHASE(tpl)
};
#endif