~linaro-toolchain-dev/linaro-toolchain-misc/kvm-boot-wrapper : changes

~linaro-toolchain-dev/linaro-toolchain-misc/kvm-boot-wrapper » Changes from revision 48

From Revision 48 to 29

Rev	Summary	Authors	Date
48	bootwrapper: CPU hotplug aware boot protocol bootwrapper: CPU hotplug aware boot protocol To enable CPU hotplug the need to provide some boot code at the reset vector and which survives after the kernel has booted without being overwritten. We achieve this by the getting the linker script to place the code in boot.S at address zero. This now means we can delete the code that relocates the secondary CPU pen code to "a location less likely to be overridden". We then modify the boot protocol slightly to allow hot-plugging of any CPU, including CPU #0, when the system is already booted. This is done by checking if SYS_FLAGS is already set before the normal check for CPU0 and the boot-or-wait decision made. This patch is based on work by Nicolas Pitre. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Jon Medhurst <tixy@linaro.org>	Jon Medhurst	11 years ago
47	bootwrapper: Enable non-secure access to the CCI bootwrapper: Enable non-secure access to the CCI We boot the kernel in non-secure mode and by default access to the CCI device is not enabled for non-secure access, so we must enable this if we want Linux to manage CPU hotplug on big.LITTLE models. Signed-off-by: Jon Medhurst <tixy@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Jon Medhurst (Tixy)	11 years ago
46	bootwrapper: Fix check for architected timer bootwrapper: Fix check for architected timer We need to set the flags when checking the feature register. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Will Deacon	11 years ago
45	bootwrapper: Initialise CCI device if found in the fdt bootwrapper: Initialise CCI device if found in the fdt The A15xA7 models simulate a Cache Coherent Interconnect (CCI) and this needs to be initialised correctly for Linux to boot. To perform this initiation we add the new function configure_from_fdt() which will look in the fdt for devices to initialise. In this first case we look for the CCI node and if found then setup this device. Signed-off-by: Jon Medhurst <tixy@linaro.org> Acked-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Jon Medhurst	11 years ago
44	bootwrapper: Factor out parsing of fdt #address-cells and #s... bootwrapper: Factor out parsing of fdt #address-cells and #size-cells A subsequent patch will also need to obtain address-cells and size-cells, so lets factor out this code into a handy function. Signed-off-by: Jon Medhurst <tixy@linaro.org> [PMM: fixed some minor style nits pointed out by Dave M] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Jon Medhurst	11 years ago
43	bootwrapper: Allow for multiple clusters in boot CPU detecti... bootwrapper: Allow for multiple clusters in boot CPU detection Check all the CPU affinity fields of MPIDR, so we select only the first CPU of the first cluster as the one to boot on. Signed-off-by: Jon Medhurst <tixy@linaro.org> Acked-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Jon Medhurst	11 years ago
42	bootwrapper: Drop now-obsolete SMC interface support bootwrapper: Drop now-obsolete SMC interface support Now that the kernel supports simply being started in Hyp mode, we don't need to maintain the obsolete SMC interface for setting HVBAR and switching to NS mode. Drop monitor.S in favour of a much simpler special-purpose bit of code in boot.S which passes briefly through Monitor mode to set up HVBAR and drop into NS state. We also disable SMC in NS mode, so that inadvertent use of it will UNDEF rather than leaping back into the boot wrapper later on. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Peter Maydell	11 years ago
41	bootwrapper: Delay switch to Hyp mode until kernel entry bootwrapper: Delay switch to Hyp mode until kernel entry The bootwrapper is really doubling as firmware, so it doesn't make sense for it to drop out of the Secure World before getting a chance to parse its parameters and configuration. Instead, it is better to delay switching to the Normal World for as long as possible so that we have a chance to do any required firmware-level configuration in the Secure World first. Signed-off-by: Dave Martin <dave.martin@linaro.org> [PMM: moved enter_hyp for secondary CPUs to just before the WFE loop to avoid making the loop code that needs relocation bigger] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Dave Martin	11 years ago
40	bootwrapper: Refactor entry into Hyp mode to be more reusabl... bootwrapper: Refactor entry into Hyp mode to be more reusable * Split Hyp mode entry out into a separate macro. * hvc now jumps back to the caller in Hyp mode instead of branching to a fixed label. Signed-off-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Dave Martin	11 years ago
39	bootwrapper: Fix misaligned Hyp mode vector table bootwrapper: Fix misaligned Hyp mode vector table Currently, it looks like we rely on luck in order to fall through to the correct vector when a Hyp Trap exception occurs. This patch aligns the Hyp mode vector table explicitly to a 32-byte boundary, as required by the architecture. Signed-off-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Dave Martin	11 years ago
38	bootwrapper: Use local definition of string.h bootwrapper: Use local definition of string.h The semihosting and FDT code makes use of libc style string functions implemented in our string.c, however it relies on the system providing the string.h header file. This causes problems on toolchains that don't provide these headers, like Android toolchains, and it also means that we include declaration for functions which aren't implemented in the bootwrapper. Resolve this by providing our own string.h which declares only the functions we implement and add the base directory to the include path so this header is found. Signed-off-by: Jon Medhurst <tixy@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Jon Medhurst (Tixy)	11 years ago
37	semi_loader: Ignore u-boot image header in initrd if exist semi_loader: Ignore u-boot image header in initrd if exist Add support for loading initrd images in u-boot image format. The image header is checked against u-boot image header magic. In case of a match, the initrd is treated as starting after the u-boot image header. Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Acked-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Guodong Xu	11 years ago
36	semi_loader: Handle dtbs with 64 bit addresses semi_loader: Handle dtbs with 64 bit addresses ARM board device tree blobs have moved to specifying addresses and sizes as 64 bit values (2 cells) rather than 32 bit (1 cell); update bootwrapper so it can handle these rather than stopping with an error. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Dave Martin <dave.martin@linaro.org>	Peter Maydell	11 years ago
35	semi_loader.c: make --dtb actually work rather than be ignor... semi_loader.c: make --dtb actually work rather than be ignored Fix a bug that meant that the --dtb option was silently ignored. (The equivalent to this fix has already been applied in the big.LITTLE bootwrapper which we borrow this file from, so this brings us back into sync.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Peter Maydell	11 years ago
34	bootwrapper: Add README bootwrapper: Add README Add a short README file describing what the bootwrapper is and how to run it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Peter Maydell	12 years ago
33	bootwrapper: Switch to C semihosting code bootwrapper: Switch to C semihosting code Switch over to the C semihosting code, removing the old assembly implementation. This allows us to simplify the build process somewhat: boot.S is now compiled only once, rather than once for semihosting and once without. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Peter Maydell	12 years ago
32	bootwrapper: Import C semihosting code bootwrapper: Import C semihosting code Import the reimplementation in C of the semihosting support written by Dave Martin for the ARM big.LITTLE bootwrapper. The main benefit of this switchover (apart from only having one implementation rather than two) is the fdt support it includes. This commit only imports the sources, it doesn't compile them. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Peter Maydell	12 years ago
31	bootwrapper: Import libfdt flattened device tree library bootwrapper: Import libfdt flattened device tree library Import the sources of the libfdt flattened device tree library, as a prerequisite for adding fdt support to the bootwrapper. This commit just pulls in the upstream sources; it does not cause them to be built. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Peter Maydell	12 years ago
30	Makefile: Use .PHONY target, not dummy commands; tidy clean ... Makefile: Use .PHONY target, not dummy commands; tidy clean list There's no need to use a dummy 'true' command to suppress the default 'try kernel makefile' target for targets with no actual rules -- you can just list as in .PHONY instead. Tidy the list of files to remove on clean to remove a duplicate and use $(KERNEL) instead of uImage. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>	Peter Maydell	12 years ago
29	boot-wrapper: tidy the Makefile to help with packaging. boot-wrapper: tidy the Makefile to help with packaging. Add and modify Makefile rules so that it can be used in a Debian package. Add an explicit 'distclean' target. Add a 'semi' target that only builds the semihosting binary. Add stub commands to 'all' and 'semi' so the call doesn't fall through to the default kernel rule. Update 'clean' to also clean the semihosting files. Signed-off-by: Michael Hope <michael.hope@linaro.org> Signed-off-by: Rusty Russell <rusty.russell@linaro.org>	Michael Hope	12 years ago

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