linux-openamp: more hacks for preempt-none.cfg

This configuration finally made the zyncmp QEMU work 100% of the time
when starting with defconfig + opeanamp.

None of these configs are acceptable for even medium term.
Noteworthy;
* PREEMPT_NONE
* RCU tree not PREEMPT
* No CPU_IDLE
* Reduced CPU_FREQ options
* NO_HZ
* No NUMA
* SLAB instead of SLUB
* reduced huge page support
* no IOMMU support
* No TEE (should not be active right now anyway)
* No ACPI (required to get CPU_IDLE off)
* No DRM Panfrost (required to get IOMMU PGTABLE* off)

Signed-off-by: Bill Mills <[email protected]>

layers/meta-openamp-bsp/recipes-kernel/linux/linux-openamp/openamp-bsp-kmeta/cfg/preempt-none.cfg

@@ -1,7 +1,13 @@
-# Xilinx QEMU zcu102 fails to boot 6% of the time with default config + zynqmp_extras even with the pinctrl backported patch.
+# Xilinx QEMU zcu102 fails to boot 6% of the time
+#   with default config + zynqmp_extras even with the pinctrl backported patch
 # The kernels that work use Xilinx/Petalinux config w/ uses PREEMPT_NONE
-# so try that for us as well
-# THIS SHOULD BE FIXED, PREEMPT_NONE is not acceptable
+# PREEMPT_NONE was not enough, so I also disabled RCU_PREEMPT
+# that was not enough so compared configs and added anything here I thought
+#   could be related
+# This config (along with the things added to zynqmp-extras.cfg )
+#   does work and ran 120 times w/ zero fails
+# It is unknown which of the below is required to fix the issue
+# THIS SHOULD BE FIXED, None of the below is acceptable as a requirement
 
 CONFIG_PREEMPT_NONE_BUILD=y
 CONFIG_PREEMPT_NONE=y
@@ -19,3 +25,62 @@ CONFIG_RCU_STALL_COMMON=y
 CONFIG_RCU_NEED_SEGCBLIST=y
 # end of RCU Subsystem
 
+CONFIG_ZYNQMP_FIRMWARE_DEBUG=y
+CONFIG_UEVENT_HELPER=y
+
+# CONFIG_VIRTUALIZATION is not set
+
+# CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set
+CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
+# CONFIG_CGROUP_HUGETLB is not set
+
+# CONFIG_STRICT_DEVMEM is not set
+# CONFIG_TEE is not set
+
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+
+# CONFIG_SECURITY is not set
+
+CONFIG_NO_HZ=y
+CONFIG_NR_CPUS=4
+# CONFIG_NUMA is not set
+# CONFIG_DMA_PERNUMA_CMA is not set
+CONFIG_ARCH_HAS_ZONE_DMA_SET=y
+
+# CONFIG_IRQ_POLL is not set
+# IRQ_TIME_ACCOUNTING is not set
+# CONFIG_KSM is not set I
+# CONFIG_SCSI_MPT3SAS is not set
+
+# CONFIG_INTERCONNECT is not set
+# CONFIG_ARM_SMMU is not set
+# CONFIG_ARM_SMMU_V3 is not set
+# CONFIG_IOMMU_IO_PGTABLE_ARMV7S is not set
+# CONFIG_IOMMU_IO_PGTABLE_LPAE is not set
+# CONFIG_MTK_IOMMU is not set
+# CONFIG_MSM_IOMMU is not set
+# CONFIG_QCOM_IOMMU is not set
+# CONFIG_APPLE_DART is not set
+# CONFIG_IPMMU_VMSA is not set
+# CONFIG_DRM_PANFROST is not set
+
+CONFIG_EMBEDDED=y
+CONFIG_EXPERT=y
+
+# CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
+CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
+# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
+# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
+# CONFIG_CPU_FREQ_GOV_PERFORMANCE is not set
+# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
+# CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set
+# CONFIG_CPU_FREQ_STAT is not set
+# CONFIG_CPU_IDLE is not set
+# CONFIG_CPU_IDLE_GOV_MENU is not set
+# CONFIG_CPU_IDLE_MULTIPLE_DRIVERS is not set
+# CONFIG_ACPI is not set
+
+CONFIG_CMA_AREAS=7
+
+# CONFIG_ARM_ARCH_TIMER_EVTSTREAM is not set