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| author | Andrew Sharp <andywyse6@gmail.com> | 2012-08-29 14:16:32 +0000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2012-09-02 14:19:05 +0200 |
| commit | 69fd2d3b0559f221a45e9a86b8ead16490f4e47b (patch) | |
| tree | 7ae77696446e7c1f4935400cf1b767e79cff6e07 /README | |
| parent | 98c397a6ed3fe58f336f6717831faa99333d72a7 (diff) | |
| download | blackbird-obmc-uboot-69fd2d3b0559f221a45e9a86b8ead16490f4e47b.tar.gz blackbird-obmc-uboot-69fd2d3b0559f221a45e9a86b8ead16490f4e47b.zip | |
pci: add CONFIG_PCI_ENUM_ONLY for platforms that don't need PCI setup done
Introduce CONFIG_PCI_ENUM_ONLY variable for platforms that just want a
quick enumberation of the PCI devices, but don't need any setup work done.
This is very beneficial on platforms that have u-boot loaded by another
boot loader which does a more sophisticated job of setup of PCI devices
than u-boot. That way, u-boot can just read what's there and get on
with life. This is what SeaBIOS does.
Signed-off-by: Andrew Sharp <andywyse6@gmail.com>
Diffstat (limited to 'README')
| -rw-r--r-- | README | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -3377,6 +3377,13 @@ Low Level (hardware related) configuration options: Disable PCI-Express on systems where it is supported but not required. +- CONFIG_PCI_ENUM_ONLY + Only scan through and get the devices on the busses. + Don't do any setup work, presumably because someone or + something has already done it, and we don't need to do it + a second time. Useful for platforms that are pre-booted + by coreboot or similar. + - CONFIG_SYS_SRIO: Chip has SRIO or not |
