diff options
| author | Pali Rohár <pali@kernel.org> | 2021-09-10 13:33:35 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-09-23 14:15:32 -0400 |
| commit | 8e85f36a8fabb4bd5216f6bfcc9a8224adb63496 (patch) | |
| tree | 88d807a4872e12a0df8eefc8463da8af9b286bd5 /tools/patman/main.py | |
| parent | df3ab898f644db6d8b7337f0a7f0995ecf41b730 (diff) | |
pci: Fix configuring io/memory base and limit registers of PCI bridges
Lower 4 bits of PCI_MEMORY_BASE and PCI_MEMORY_LIMIT registers are reserved
and should be zero. So do not set them to non-zero value.
Lower 4 bits of PCI_PREF_MEMORY_BASE and PCI_PREF_MEMORY_LIMIT registers
contain information if 64-bit memory addressing is supported. So preserve
this information when overwriting these registers.
Lower 4 bits of PCI_IO_BASE and PCI_IO_LIMIT register contain information
if 32-bit io addressing is supported. So preserve this information and do
not try to configure 32-bit io addressing (via PCI_IO_BASE_UPPER16 and
PCI_IO_LIMIT_UPPER16 registers) when it is unsupported.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'tools/patman/main.py')
0 files changed, 0 insertions, 0 deletions