Fix bootefi on layerscape boards which use spin table for secondary cores
bringup. There two main issues here:
(1) bootefi doesn't kick the secondary cores
(2) bootefi reserves a 64kb region for runtime services code on ARM64
which overlaps the spin table code.
We will fix (1) by removing the need to kick the secondary cores. For (2),
we will make the spin table code relocatable and if the efi_loader support
is enabled we will dynamically allocate a page for the spin table code and
relocate it there. While we are at it, clean up the whole spin table code
for layerscape.
Please note, no current board in u-boot should be using spin tables,
because NXP officially only supports TF-A, which uses PSCI for secondary
cores booting. Only the pending Kontron SMARC-sAL28 board will be using
this method. U-Boot support is still pending, see:
https://patchwork.ozlabs.org/project/uboot/list/?series=175926
This was tested on said board, both with CONFIG_ARMV8_SWITCH_TO_EL1 defined
and undefined.
Michael Walle (13):
armv8: layerscape: fix spin-table support
armv8: layerscape: pretty print info about SMP cores
armv8: layerscape: properly use CPU_RELEASE_ADDR
armv8: layerscape: move spin table into own module
armv8: layerscape: load function pointer using ADR
armv8: layerscape: fix alignment for spin table
armv8: layerscape: remove determine_mp_bootpg()
armv8: layerscape: simplify get_spin_tbl_addr() calls
armv8: layerscape: make wake_secondary_core_n() static
armv8: freescale: drop first .ltorg directive in spintable.S
armv8: layerscape: clean exported symbols in spintable.S
armv8: layerscape: relocate spin table if EFI_LOADER is enabled
armv8: layerscape: rework spin table
arch/arm/cpu/armv8/fsl-layerscape/Makefile | 2 +-
arch/arm/cpu/armv8/fsl-layerscape/fdt.c | 9 +-
arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S | 165 ++----------------
arch/arm/cpu/armv8/fsl-layerscape/mp.c | 79 ++++++---
arch/arm/cpu/armv8/fsl-layerscape/spintable.S | 118 +++++++++++++
arch/arm/include/asm/arch-fsl-layerscape/mp.h | 8 +-
include/configs/kontron_sl28.h | 2 +-
include/configs/ls1028a_common.h | 2 +-
include/configs/ls1043a_common.h | 2 +-
include/configs/ls1046a_common.h | 2 +-
include/configs/ls1088a_common.h | 2 +-
include/configs/ls2080a_common.h | 2 +-
include/configs/lx2160a_common.h | 2 +-
13 files changed, 201 insertions(+), 194 deletions(-)
create mode 100644 arch/arm/cpu/armv8/fsl-layerscape/spintable.S
--
2.20.1
