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2019-07-23Merge tag 'efi-2019-10-rc1-2' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-efi Pull request for UEFI sub-system for v2019.10-rc1 (2) * Implement the EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event. * Address errors of type -Werror=address-of-packed-member when building with GCC9.1 * Fix an error when adding memory add addres 0x00000000. * Rework some code comments for Sphinx compliance.
2019-07-17spl: Allow performing BSS init early before board_init_f()Andreas Dannenberg
On some platform we have sufficient memory available early on to allow setting up and using a basic BSS prior to entering board_init_f(). Doing so can for example be used to carry state over to board_init_r() without having to resort to extending U-Boot's global data structure. To support such scenarios add a Kconfig option called CONFIG_SPL_EARLY_BSS to allow moving the initialization of BSS prior to entering board_init_f(), if enabled. Note that using this option usually should go along with using CONFIG_SPL_SEPARATE_BSS and configuring BSS to be located in memory actually available prior to board_init_f(). Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
2019-07-16efi_loader: use predefined constants in crt0_*_efi.SHeinrich Schuchardt
We should use predefined constants instead of magic numbers. Move some constant definitions from include/pe.h to include/asm-generic/pe.h. Use these constants in crt0_*_efi.S. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-07-10arm64: add an option to switch visibility of CONFIG_SYS_INIT_SP_BSS_OFFSETMasahiro Yamada
By default, CONFIG_SYS_INIT_SP_BSS_OFFSET was made invisible by not giving a prompt to it. The only way to define it is to hard-code an extra entry in SoC/board Kconfig, like arch/arm/mach-tegra/tegra{186,210}/Kconfig. Add a prompt to it in order to allow defconfig files to specify the value of CONFIG_SYS_INIT_SP_BSS_OFFSET. With this, CONFIG_SYS_INIT_SP_BSS_OFFSET would become always visible. So, we need a new bool option to turn it off by default. I move the 'default 524288' to the common place. This value is not too big, but is big enough to avoid the overwrap of DT in most platforms. If 512KB is not a suitable choice for your platform, you can change it from your defconfig or menuconfig etc. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Stephen Warren <swarren@nvidia.com>
2019-05-18CONFIG_SPL_SYS_[DI]CACHE_OFF: addTrevor Woerner
While converting CONFIG_SYS_[DI]CACHE_OFF to Kconfig, there are instances where these configuration items are conditional on SPL. This commit adds SPL variants of these configuration items, uses CONFIG_IS_ENABLED(), and updates the configurations as required. Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Trevor Woerner <trevor@toganlabs.com> [trini: Make the default depend on the setting for full U-Boot, update more zynq hardware] Signed-off-by: Tom Rini <trini@konsulko.com>
2019-05-09arm: zimage: add barebox image magic numberChristoph Fritz
For chainboot configurations or test environments, this patch allows booting barebox images by using command bootz. Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
2019-05-08arm: add a separate stack for TPLKever Yang
TPL stack may different from SPL and sys stack, add support for separate one when the board defines it. Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-08arm: remove ARCH_ROCKCHIP macro in common codeKever Yang
This is fix to: e2a12f590d rockchip: use 'arch-rockchip' as header file path The V2 of origin patch set has fix this, but we merge V1 by mistake, so lets correct it. Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
2019-05-01rockchip: arm: use 'arch-rockchip' for common headerKever Yang
rockchip platform header file is in 'arch-rockchip' instead of arch-$(SOC) for all SoCs. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2019-04-22arm: arm64 32bit address relocationIbai Erkiaga
Current relocation code is limited to 21bit PC-relative addressing which might not be enough for bigger code sizes. The following patch increases the addressing to 32bit PC-relative. This feature is specially interesting if U-Boot is build without optimiation (-O0) as the text section is increased significativelly. Signed-off-by: Ibai Erkiaga <ibai.erkiaga-elorza@xilinx.com>
2019-04-12arm: print information about loaded UEFI imagesHeinrich Schuchardt
If an exception occurs in a UEFI loaded image we need the start address of the image to determine the relocation offset. This patch adds the necessary lines after the registers in the crash dump for armv8. A possible output would be: UEFI image [0x00000000bffe6000:0x00000000bffe631f] pc=0x138 '/\snp.efi' With the offset 0x138 we can now find the relevant instruction in the disassembled 'snp.efi' binary. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2019-03-22arm: lib: bootm: Push the Starting kernel print to the endKeerthy
Push the Starting kernel print to the end just before the dm_remove_devices call. Signed-off-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-02-28ARM: cache: Fix incorrect bitwise operationMarek Vasut
The loop implemented in the code is supposed to check whether the PL310 operation register has any bit from the mask set. Currently, the code checks whether the PL310 operation register has any bit set AND whether the mask is non-zero, which is incorrect. Fix the conditional. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Dalon Westergreen <dwesterg@gmail.com> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Tom Rini <trini@konsulko.com> Fixes: 93bc21930a1b ("armv7: add PL310 support to u-boot") Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Dinh Nguyen <dinguyen@kernel.org>
2019-02-19arch: arm: lib: Flush L3 after relocation to DDRMeenakshi Aggarwal
Flush L3 cache after uboot relocated to DDR. Signed-off-by: Meenakshi Aggarwal <meenakshi.aggarwal@nxp.com> Signed-off-by: Udit Kumar <udit.kumar@nxp.com> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
2019-02-13efi_selftest: allow building on ARMv7-MHeinrich Schuchardt
ARMv7-M only supports the Thumb instruction set. Our current crt0 code does not support it. With the patch we can build all unit tests of the EFI subsystem that do not require crt0. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2019-01-16arm: bootm: fix sp detection at end of address rangeSimon Goldschmidt
This fixes 'arch_lmb_reserve()' for ARM that tries to detect in which DRAM bank 'sp' is in. This code failed if a bank was at the end of physical address range (i.e. size + length overflowed to 0). To fix this, calculate 'bank_end' as 'size + length - 1' so that such banks end at 0xffffffff, not 0. Fixes: 15751403b6 ("ARM: bootm: don't assume sp is in DRAM bank 0") Reported-by: Frank Wunderlich <frank-w@public-files.de> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Stephen Warren <swarren@nvidia.com>
2018-12-02arm: efi: Generate Microsoft PE format compliant imagesBin Meng
Per Microsoft PE Format documentation [1], PointerToSymbolTable and NumberOfSymbols should be zero for an image in the COFF file header. Currently the COFF file header is hardcoded on ARM and these two members are not zero. This updates the hardcoded structure to clear these two members, as well as setting the flag IMAGE_FILE_LOCAL_SYMS_STRIPPED so that we can generate compliant *.efi images. [1] https://docs.microsoft.com/zh-cn/windows/desktop/Debug/pe-format Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-11-16arm: Make arch specific memcpy thumb-safe.Klaus Goger
The current arch implementation of memcpy cannot be called from thumb code, because it does not use bx instructions on return. This patch addresses that. Note, that this patch does not touch the hot loop of memcpy, so performance is not affected. Tested on MXS (arm926ejs) with and without thumb-mode enabled. Signed-off-by: Klaus Goger <klaus.goger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
2018-10-17Merge tag 'signed-efi-2018.11' of git://github.com/agraf/u-bootTom Rini
Patch queue for efi - 2018-10-17 A few bug fixes for the 2018.11 release: - Fix block seeking on 32bit - Fix execution with DEBUG set - Fix a few Coverity found bugs - Fix warnings Heinrich Schuchardt (13): efi_loader: fix relocation on x86_64 efi_loader: correct signature of GetPosition, SetPosition efi_loader: execute efi_save_gd() first efi_loader: efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, ...) efi_loader: error handling in read_console() efi_loader: return type efi_console_register() efi_loader: superfluous statement in is_dir() efi_loader: memory leak in efi_set_variable() efi_loader: remove lcd.h from efi_net.c arm: do not include efi_loader.h twice efi_loader: fix typo in efi_boottime.c efi_selftest: creating new handle in controller test efi_loader: efi_dp_get_next_instance() superfluous statement Tom Rini (2): efi_loader: Fix warning in efi_load_image() fs: fat: Fix warning in normalize_longname()
2018-10-16arm: do not include efi_loader.h twiceHeinrich Schuchardt
We should not include the same include twice. Fixes: 99b8db7291ce ("arm: print information about loaded UEFI images") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-10-16arm64: gic: Do gicv3 secure initialization based on EL levelMichal Simek
Do gic cpu initialization based on EL level which u-boot enters. U-Boot can't access EL3 regs when runs in EL2/EL1, etc. Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-09-11arm: K3: Update _start instructionLokesh Vutla
On K3 family SoCs, once the ROM loads image on R5, M3 resets R5 and expects to start executing from 0x0. In order to handle this ROM updates the boot vector of R5 such that first 64 bytes of image load address are mapped to 0x0. In this case, it is SPL's responsibility to jump to the proper image location. So, update the PC with address of reset vector(like how other exception vectors are handled), instead of branching to reset. Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2018-09-10arm: armv7m: clean up armv7m unified code compilationVikas Manocha
unified syntax should be selected by config ARM_ASM_UNIFIED Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
2018-09-10arm: armv7m: remove un-necessary If then instructionVikas Manocha
With gas option -mimplicit-it=always, IT block is inserted by the assembler for thumb2. Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
2018-07-26ARM: PSCI: Enable the PSCI nodeStephen Warren
When fixing up the DT to report PSCI support, explicitly enable the node. DTs may ship with the node disabled in case a PSCI implementation is not present, and expect any PSCI implementation to enable the node if they are actually present. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2018-07-26ARM: PSCI: Support PSCI v0.2Stephen Warren
Enhance the PSCI DT editing code to allow setting a PSCI v0.2 compatible value in the DT. The CONFIG_ option is added to the whitelist to match the existing PSCI_1_0 option. While not adding new options to Kconfig isn't ideal, I figure it's better to keep related options together. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
2018-07-19arm: Remove unused _relocate argumentsIvan Gorinov
EFI image handle and system table are not used in _relocate(). Signed-off-by: Ivan Gorinov <ivan.gorinov@intel.com>
2018-06-19ARM: image: Add option for ignoring ep bit 3Marek Vasut
Add option to the booti_setup() which indicates to it that the caller requires the image to be relocated to the beginning of the RAM and that the information whether the image can be located anywhere in RAM at 2 MiB aligned boundary or not is to be ignored. This is useful ie. in case the Image is wrapped in another envelope, ie. fitImage and not relocating it but moving it would corrupt the envelope. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Bin Chen <bin.chen@linaro.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Tom Rini <trini@konsulko.com> Reviewed-By: Bin Chen <bin.chen@linaro.org>
2018-06-18arm: Do not clear LR on exception in SPLAndrew F. Davis
When an exception or interrupt occurs the link register (LR) may contain the source of the exception, although we do not print the value it may still be extracted with a debugger. When in SPL we loop on getting and exception, but use a linking branch, which over-writes the LR value, use a regular branch instruction here. Signed-off-by: Andrew F. Davis <afd@ti.com>
2018-05-23arm: print instructions pointed to by pcHeinrich Schuchardt
If an exception occurs in a loaded image and the relocation offset is unknown, it is helful to know the instructions pointed to by the program counter. This patch adds the missing output. A possible output is: Code: e1c560d0 e12fff1e e120077b e12fff1e (e7f7defb) The parentheses indicate the instruction causing the exception. The output can be disassembled using the decodecode script provided by the Linux kernel project. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-05-10bootm: fix 'memory-fixup' for vxWorks bootHannes Schmelzer
The check for having a memory node within the fdt blob is made wrong, we fix this here. Signed-off-by: Hannes Schmelzer <hannes.schmelzer@br-automation.com>
2018-05-07arm: v7R: Add support for enabling cachesLokesh Vutla
Cache maintenance procedure is same for v7A and v7R processors. So re-use cache-cp15.c file except for mmu parts. Tested-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2018-05-07arm: v7: Kconfig: Introduce SYS_ARM_CACHE_CP15Lokesh Vutla
Certain ARM architectures like ARMv7-A, ARMv7-R has support for enabling caches using CP15 registers. To have a common support for all these architectures, introduce a Kconfig symbol SYS_ARM_CACHE_CP15 that selects cache-cp15.c Tested-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Tom Rini <trini@konsulko.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2018-05-07arm: v7: Kconfig: Rename CPU_V7 as CPU_V7ALokesh Vutla
Currently CPU_V7 kconfig symbol supports only ARMv7A architectures under armv7 folder. This led to a misconception of creating separate folders for armv7m and armv7r. There is no reason to create separate folder for other armv7 based architectures when it can co-exist with few Kconfig symbols. As a first step towards a common folder, rename CPU_V7 as CPUV7A. Later separate Kconfig symbols can be added for CPU_V7R and CPU_V7M and can co exist in the same folder. Reviewed-by: Tom Rini <trini@konsulko.com> Tested-by: Michal Simek <michal.simek@xilinx.com> Suggested-by: Alexander Graf <agraf@suse.de> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2018-05-07SPDX: Convert all of our multiple license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have multiple licenses (in these cases, dual license) declared in the SPDX-License-Identifier tag. In this case we change from listing "LICENSE-A LICENSE-B" or "LICENSE-A or LICENSE-B" or "(LICENSE-A OR LICENSE-B)" to "LICENSE-A OR LICENSE-B" as per the Linux Kernel style document. Note that parenthesis are allowed so when they were used before we continue to use them. Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTRTom Rini
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-13vxworks: fixed cpu enable using PSCI on armv8Vasyl Vavrychuk
Without armv8_setup_psci register VBAR_EL3 is not set up property which makes SMC calls jump to invalid location. smp_kick_all_cpus is required to make slave cpus leave gic_wait_for_interrupt. Without this they will never pursue booting process. Fix was applied to the two ways of booting VxWorks: bootvx and bootm commands. This implementation is very similar to what is done in boot_jump_linux in arch/arm/lib/bootm.c file. Tested on VxWorks 7 release SR0520 2017-12-08 Intel Stratix 10 SX SoC Development Kit board. Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@globallogic.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-04-11ARM: Fix Makefile during SPL and TPL buildMarek Vasut
The tiny variants of memset and memcpy implementations can be built for TPL as well, check whether a TPL build is in progress and avoid including the default variants. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@konsulko.com>
2018-04-05arm: print information about loaded UEFI imagesHeinrich Schuchardt
If an exception occurs in a UEFI loaded image we need the start address of the image to determine the relocation offset. This patch adds the necessary lines after the registers in the crash dump. A possible output would be: UEFI image [0xbffe6000:0xbffe631f] pc=0x138 '/\snp.efi' With the offset 0x138 we can now find the relevant instruction in the disassembled 'snp.efi' binary. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-03-05libfdt: move headers to <linux/libfdt.h> and <linux/libfdt_env.h>Masahiro Yamada
Thomas reported U-Boot failed to build host tools if libfdt-devel package is installed because tools include libfdt headers from /usr/include/ instead of using internal ones. This commit moves the header code: include/libfdt.h -> include/linux/libfdt.h include/libfdt_env.h -> include/linux/libfdt_env.h and replaces include directives: #include <libfdt.h> -> #include <linux/libfdt.h> #include <libfdt_env.h> -> #include <linux/libfdt_env.h> Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-02-23arm64: show_regs: Dump the LRs HW valuesKarl Beldan
These were dropped in [1], after relocation, for their values offset by reloc_off. Unconditionally show the HW values and add a '(reloc)' hint for the offset values showed after relocation. Also, the LRs' dumps are now formatted the same way the other regs' are. [1] Commit 082693f4 ("arm64 :show_regs: show the address before relocation") Signed-off-by: Karl Beldan <karl.beldan+oss@gmail.com>
2018-02-14arm/PSCI: support PSCI versions greater than 1.0Andre Heider
ATF recently began announcing PSCI v1.1. Since that version is unknown to u-boot, the PSCI device nodes were not updated. Switch from the case statement to a greater/less-than comparison so that v1.1, as well as future versions, get at least the compatible nodes of known versions. PSCI v1.1 doesn't seem to have introduced a new corresponding compatible. Signed-off-by: Andre Heider <a.heider@gmail.com>
2018-02-13ARM: image: indent with tab instead of 4 spacesMasahiro Yamada
Commit 6808ef9ac2a6 ("move booti_setup to arch/arm/lig/image.c") not only moved the code, but also replaced a tab with 4 spaces to break the Linux coding style. Restore tab indentation. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Bin Chen <bin.chen@linaro.org>
2018-02-10efi_loader: fix building crt0 on armHeinrich Schuchardt
Before the patch an undefined constant EFI_SUBSYSTEM was used in the crt0 code. The current version of binutils does not swallow the error. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=888403 The necessary constant IMAGE_SUBSYSTEM_EFI_APPLICATION is already defined in pe.h. So let's factor out asm-generic/pe.h for the image subsystem constants and use it in our assembler code. IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER does not exist in the specification let's use IMAGE_SUBSYSTEM_EFI_ROM instead. The include pe.h is only used in code maintained by Alex so let him be the maintainer here too. Reported-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Tested-by: Vagrant Cascadian <vagrant@debian.org> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-02-07move booti_setup to arch/arm/lig/image.cBin Chen
Follow bootz's pattern by moving the booti_setup to arch/arm/lib. This allows to use booti_setup in other paths, e.g booting an Android image containing Image format. Note that kernel relocation is move out of booti_setup and it is the caller's responsibility to do it and allows them do it differently. say, cmd/booti.c just do a manually, while in the bootm path, we can use bootm_load_os(with some changes). Signed-off-by: Bin Chen <bin.chen@linaro.org> Reviewed-by: Tom Rini <trini@konsulko.com>
2018-01-28arm: bootm-fdt.c: fix compiler warningHeiko Schocher
compiling U-Boot with bosch_mpcxxxxd_sd_defconfig drops warning: arch/arm/lib/bootm-fdt.c: In function ‘arch_fixup_fdt’: arch/arm/lib/bootm-fdt.c:37:6: warning: unused variable ‘ret’ [-Wunused-variable] int ret = 0; ^~~ Fix it. Signed-off-by: Heiko Schocher <hs@denx.de>
2018-01-22efi_selftest: test start imageHeinrich Schuchardt
This pair of tests checks the StartImage boot service. Each test loads an EFI application into memory and starts it. One returns by calling the Exit boot service. The other returns directly. The tests are not built on x86_64 because the relocation code for the efi binary cannot be created. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2018-01-12ARM: bootm: don't assume sp is in DRAM bank 0Stephen Warren
arch_lmb_reserve() currently assumes that the stack pointer is within DRAM bank 0. This is not necessarily true. Enhance the code to search through DRAM banks until the bank that does contain SP is found, and then reserve the tail of that bank. Fixes: 2d1916e48bd8 ("ARM: add flat device tree support") Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
2018-01-12ARMv8: Allow dynamic early stack pointerStephen Warren
U-Boot typically uses a hard-coded value for the stack pointer before relocation. Implement option SYS_INIT_SP_BSS_OFFSET to instead calculate the initial SP at run-time. This is useful to avoid hard-coding addresses into U-Boot, so that can be loaded and executed at arbitrary addresses and thus avoid using arbitrary addresses at runtime. This option's value is the offset added to &_bss_start in order to calculate the stack pointer. This offset should be large enough so that the early malloc region, global data (gd), and early stack usage do not overlap any appended DTB. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>