On Mon, Oct 21, 2019 at 11:40 AM Simon Glass <s...@chromium.org> wrote: > > In TPL we try to minimise code size so do not include the PCI subsystem. > We can use fixed BARs and drivers can directly program the devices that > they need. > > However we do need to bind the devices on the PCI bus and without PCI this > does not ordinarily happen. As a work-around, define a fake PCI bus which > does this binding, but no other PCI operations. This is a convenient way > to ensure that we can use the same device tree for TPL, SPL and U-Boot > proper: > > TPL - CONFIG_TPL_PCI is not set (no auto-config, fake PCI bus) > SPL - CONFIG_SPL_PCI is set (no auto-config but with real PCI bus) > U-Boot - CONFIG_PCI is set (full auto-config after relocation) > > Signed-off-by: Simon Glass <s...@chromium.org> > --- > > Changes in v3: > - Fix 'autoallocation' typo > - Improve wording in commit message > > Changes in v2: None > > arch/x86/lib/tpl.c | 25 +++++++++++++++++++++++++ > 1 file changed, 25 insertions(+) >
Reviewed-by: Bin Meng <bmeng...@gmail.com> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
