Hi Pierre, On Tue, Mar 19, 2024 at 8:39 AM Pierre-Clément Tosi <pt...@google.com> wrote:
> This means gd->arch.tlb_addr pointing to the live PTs during setup_pgtables(). > > In arch/arm/cpu/armv8, setup_all_pgtables() runs with SCTLR_ELx.M unset. > > In arch/arm/cpu/armv8/fsl-layerscape, setup_pgtables() is called twice: > > - early_mmu_setup() calls it with SCTLR_ELx.M unset; > - final_mmu_setup() overwrites gd->arch.tlb_addr before calling it iff > CFG_SYS_MEM_RESERVE_SECURE is defined i.e. if > CONFIG_SYS_SOC="fsl-layerscape" > so that <asm/arch-fsl-layerscape/config.h> gets auto-included through > <include/config.h>. > > So can CONFIG_FSL_LAYERSCAPE be set while CONFIG_SYS_SOC != "fsl-layerscape"? No, this cannot happen. Only the following Layerscape SoCs select CONFIG_FSL_LAYERSCAPE in arch/arm/cpu/armv8/fsl-layerscape/Kconfig: LS1012A, LS1028A, LS1043A, LS1046A, LS1088A, LS2080A, LX2162A and LX2160A I saw the original boot problem with the i.MX8QX. The i.MX8QX is part of the i.MX family, not the Layerscape family. > I suppose Fabio and Stefano can answer this and/or help with ensuring that > setup_pgtables() is never called on live PTs. Let me know if you need any clarification. Thanks, Fabio Estevam
