On Fri, Mar 05, 2021 at 03:02:35PM +0800, Zhiqiang Hou wrote: > From: Hou Zhiqiang <zhiqiang....@nxp.com> > > The GICv3 RM requires "The first 1KB of memory for the LPI Pending tables > must contain only zeros on initial allocation, and this must be visible > to the Redistributors, or else the effect is UNPREDICTABLE". > > And as the following statement, we here clear the whole Pending tables > instead of the first 1KB. > "An LPI Pending table that contains only zeros, including in the first 1KB, > indicates that there are no pending LPIs. > The first 1KB of the LPI Pending table is IMPLEMENTATION DEFINED. However, > if the first 1KB of the LPI Pending table and the rest of the table contain > only zeros, this must indicate that there are no pending LPIs." > > And there isn't any pending LPI under U-Boot, so it's unnecessary to > load the contents of the Pending table during the enablement, then set > the GICR_PENDBASER.PTZ flag. > > Signed-off-by: Hou Zhiqiang <zhiqiang....@nxp.com> > ---
Tested-by: Vladimir Oltean <vladimir.olt...@nxp.com> # NXP LS1028A
