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2019-04-12x86: dts: switch spi-flash to jedec, spi-nor compatibleNeil Armstrong
The x86 code and DT uses "spi-flash" to detect a flash node, switch to "jedec,spi-nor" in the DTS files and in fdtdec by switching the GENERIC_SPI_FLASH value to to jedec,spi-nor. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
2019-03-11x86: crownbay: Enable the beeper sound driverBin Meng
Use the i8254 sound driver to support creating simple beeps. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-03-11x86: coreboot: Add the missing pc speaker node in the device treeBin Meng
This is currently missing and without it the i8254 beeper driver won't work. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-03-11x86: Add a dtsi file for the pc speakerBin Meng
The pc speaker driven by the i8254 is generic enough to deserve a single dtsi file to be included by boards that use it. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-03-11x86: Make sure i8254 is setup correctly before generating beepsBin Meng
The i8254 timer control IO port (0x43) should be setup correctly by using PIT counter 2 to generate beeps, however in U-Boot other codes like TSC driver utilizes PIT for TSC frequency calibration and configures the counter 2 to a different mode that does not beep. Fix this by always ensuring the PIT counter 2 is correctly initialized so that the i8254 beeper driver works as expected. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-03-10x86: edison: Add the rest of UARTs present on boardAndy Shevchenko
Intel Edison has three UART ports, i.e. port 0 - Bluetooth port 1 - auxiliary, available for general purpose use port 2 - debugging, usually console output is here Enable all of them for future use. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-03-10x86: edison: Use proper number of serial interfaceAndy Shevchenko
The console is actually serial #2. When we would like to enable other ports, this would be not okay to mess up with the ordering. Thus, fix the number of default console interface to be 2. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-03-10x86: acpi: Not every platform has serial console a first deviceAndy Shevchenko
We may not do an assumption that current console device is always a first of UCLASS_SERIAL one. For example, on properly described Intel Edison board the console UART is a third one. Use current serial device as described in global data. Fixes: a61cbad78e67 ("dm: serial: Adjust serial_getinfo() to use proper API") Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-03-10x86: acpi: Add DMA descriptors for I2C1 on Intel TangierAndy Shevchenko
Intel Tangier SoC has a general purpose DMA which can serve to speed up communications on SPI and I2C serial buses. Provide DMA descriptors to utilize this capability in the future. Note, I2C6, which is available to user, has no DMA request lines connected. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-03-10x86: acpi: Add DMA descriptors for SPI5 on Intel TangierAndy Shevchenko
Intel Tangier SoC has a general purpose DMA which can serve to speed up communications on SPI and I2C serial buses. Provide DMA descriptors to utilize this capability in the future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-20x86: Add sound support for samusSimon Glass
Enable sound on samus using the broadwell I2S and an RT5677 audio codec. Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Simon Glass <sjg@chromium.org>
2019-02-20x86: broadwell: Add support for serial I/O devicesSimon Glass
Add support for initing the I2C device and ADSP on broadwell. These are needed for sound to work. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-20x86: broadwell: Don't bother probing the PCH for pinctrlSimon Glass
At present the pinctrl probes the PCH but since it only uses it to obtain a PCI address, this is no necessary. Avoiding this fixes one of the two co-dependent loops in broadwell. This driver really should be a proper pinctrl driver, but for now it remains a syscon device. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-20x86: broadwell: Add support for the ADSPSimon Glass
The Application Digital Signal Processor is used for sound processing with broadwell. Add a driver to support this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-20sound: x86: Add beeping support in i8254Simon Glass
Adjust the code to allow beeping at different frequencies, using a calculated value for timer 2. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-20sound: x86: link: Add sound supportSimon Glass
Add sound support for link, using the HDA codec implementation. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-20x86: ivybridge: Add a way to get the HDA config settingSimon Glass
Add a way check to whether HD audio is enabled. Use ioctl() to avoid adding too many unusual operations to PCH. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-20x86: Adjust I/O macros to work on 64-bit machinesSimon Glass
At present these macros give warnings on 64-bit machines and do not correctly do 32-bit accesses. Update them to use linux types. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-13x86: do not use i386 code for x86_64 memory functionsHeinrich Schuchardt
arch/x86/lib/string.c contains assembler implementations of memcpy(), memmove(), and memset() written for i386. Don't use it on x86_64. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
2019-02-12x86: tangier: Add initial ACPI support for PMIC deviceAndy Shevchenko
Basin Cove PMIC is connected to I2C0 bus which is hidden from the OS and access is going via SCU device, enumerated via PCI. For now, we add just a minimum support of PMIC device to allow enabling, e.g. USB OTG, in the OS. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Bin Meng <bmeng.cn@gmail.com>
2019-02-12x86: Use the existing GDT in the ROM for 64-bit U-Boot properBin Meng
It is unnecessary to use a RAM version GDT for 64-bit U-Boot proper. In fact we can just use the ROM version directly, which not only eliminates the risk of being overwritten by application, but also removes the complexity of patching the cpu_call64(). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-02-12x86: Don't copy the cpu_call64() function to a hardcoded addressBin Meng
Before jumping to 64-bit U-Boot proper, SPL copies the cpu_call64() function to a hardcoded address 0x3000000. This can have potential conflicts with application usage. Switch the destination address to be allocated from the heap to avoid such risk. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-02-12x86: Change 4-level page table base address to low memoryBin Meng
At present the 4-level page table base address for 64-bit U-Boot proper is assigned an address that conflicts with CONFIG_LOADADDR. Change it to an address within the low memory range instead. Fixes crashes seen when 'dhcp' on QEMU x86_64 with "-net nic -net user,tftp=.,bootfile=u-boot". Reported-by: Alexander Graf <agraf@suse.de> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-01-26linker: Modify linker scripts to be more genericTom Rini
Make use of "IMAGE_MAX_SIZE" and "IMAGE_TEXT_BASE" rather than CONFIG_SPL_MAX_SIZE and CONFIG_SPL_TEXT_BASE. This lets us re-use the same script for both SPL and TPL. Add logic to scripts/Makefile.spl to pass in the right value when preprocessing the script. Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Jagan Teki <jagan@openedev.com> Cc: Maxime Ripard <maxime.ripard@bootlin.com> Cc: Andreas Bießmann <andreas@biessmann.org> Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: York Sun <york.sun@nxp.com> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Heiko Schocher <hs@denx.de> Cc: Adam Ford <aford173@gmail.com> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Tested-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Tested-by: Adam Ford <aford173@gmail.com> #da850evm & omap3_logic_somlv Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
2019-01-18x86: Kconfig: spelling fixesChris Packham
Signed-off-by: Chris Packham <judge.packham@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2019-01-14dm: serial: Adjust serial_getinfo() to use proper APISimon Glass
All driver-model functions should have a device as the first parameter. Update this function accordingly. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2019-01-14dm: serial: Adjust serial_getconfig() to use proper APISimon Glass
All driver-model functions should have a device as the first parameter. Update this function accordingly. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
2018-12-10efi: payload: only init usb if necessaryBin Meng
Up until now the call to initialize the USB subsystem was hardcoded for U-Boot running as an EFI payload. This was used to enable the use of a USB keyboard in the U-Boot shell. However not all boards might need this functionality. As initializing the USB subsystem can take a considerable amount of time (several seconds on some boards), we now initialize the USB subsystem only if U-Boot is configured to use USB keyboards. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2018-12-10coreboot: only init usb if necessaryThomas RIENOESSL
Up until now the call to initialize the USB subsystem was hardcoded for U-Boot running as a coreboot payload. This was used to enable the use of a USB keyboard in the U-Boot shell. However not all boards might need this functionality. As initializing the USB subsystem can take a considerable amount of time (several seconds on some boards), we now initialize the USB subsystem only if U-Boot is configured to use USB keyboards. Signed-off-by: Thomas RIENOESSL <thomas.rienoessl@bachmann.info> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
2018-12-10x86: kconfig: Allow board defconfig file to disable 8259 and APICBin Meng
At present the Kconfig options (CONFIG_I8259_PIC and CONFIG_APIC) do not include a prompt message, which makes it impossible to be disabled from a board defconfig file. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-12-10x86: Wrap calls to 8259 with CONFIG_I8259_PICBin Meng
mask_irq(), unmask_irq() and specific_eoi() are provided by the i8259 PIC driver and should be wrapped with CONFIG_I8259_PIC. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Hannes Schmelzer <oe5hpm@oevsv.at>
2018-12-10x86: make the LAPIC / IOAPIC construct switchable with KconfigHannes Schmelzer
There are still systems running which do not have any LAPIC or even IOAPIC. Responsible MSRs for those do not exist and the systems are crashing on trying to setup LAPIC. This commit makes the APIC stuff able to switch off for those boards which dont' have an LAPIC / IOAPIC. Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-12-10x86: acpi: Fix indentation in Intel Tangier ASL codeAndy Shevchenko
Make the indentation aligned with what used elsewhere in U-Boot. No functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-12-10x86: acpi: Enable RTC for Intel TangierAndy Shevchenko
Intel Tangier SoC has RTC inside. So, enable it in ACPI. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-12-05x86: acpi: Generate SPCR tableAndy Shevchenko
Microsoft specifies a SPCR (Serial Port Console Redirection Table) [1]. Let's provide it in U-Boot. [1]: https://docs.microsoft.com/en-us/windows-hardware/drivers/serports/serial-port-console-redirection-table Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-12-05x86: acpi: Add SPCR table descriptionAndy Shevchenko
Add SPCR table description as it provided in Linux kernel. Port subtype for ACPI_DBG2_SERIAL_PORT is used as an interface type in SPCR. Thus, provide a set of definitions to be utilized later. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-12-02x86: efi: app: Generate Microsoft PE format compliant imageBin Meng
Per Microsoft PE Format documentation [1], PointerToSymbolTable and NumberOfSymbols should be zero for an image in the COFF file header. Currently U-Boot is generating u-boot-app.efi in which these two members are not zero. This updates the build rules to tell linker to remove the symbol table completely 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>
2018-12-02x86: efi: payload: Generate Microsoft PE format compliant imageBin Meng
Per Microsoft PE Format documentation [1], PointerToSymbolTable and NumberOfSymbols should be zero for an image in the COFF file header. Currently U-Boot is generating u-boot-payload.efi image in which these two members are not zero. This updates the build rules to tell linker to remove the symbol table completely so that we can generate compliant *.efi images. [1] https://docs.microsoft.com/zh-cn/windows/desktop/Debug/pe-format Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de> 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>
2018-11-14cpu: Add DM_FLAG_PRE_RELOC flag to various cpu driversBin Meng
It turns out commit c0434407b595 broke some boards which have DM CPU driver with CONFIG_DISPLAY_CPUINFO option on. These boards just fail to boot when print_cpuinfo() is called during boot. Fixes: c0434407b595 ("board_f: Use static print_cpuinfo if CONFIG_CPU is active") Reported-by: Stefan Roese <sr@denx.de> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Stefan Roese <sr@denx.de> Tested-by: Stefan Roese <sr@denx.de>
2018-11-14sysreset: Remove DM_FLAG_PRE_RELOC flag in various driversBin Meng
When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be bound before relocation. However due to a bug in the DM core, the flag only takes effect when devices are statically declared via U_BOOT_DEVICE(). This bug has been fixed recently by commit "dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt()", but with the fix, it has a side effect that all existing drivers that declared DM_FLAG_PRE_RELOC flag will be bound before relocation now. This may expose potential boot failure on some boards due to insufficient memory during the pre-relocation stage. To mitigate this potential impact, the following changes are implemented: - Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver only supports configuration from device tree (OF_CONTROL) - Keep DM_FLAG_PRE_RELOC flag in the driver only if the device is statically declared via U_BOOT_DEVICE() - Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for drivers that support both statically declared devices and configuration from device tree Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-14x86: Implement arch-specific io accessor routinesBin Meng
At present the generic io{read,write}{8,16,32} routines only support MMIO access. With architecture like x86 that has a separate IO space, these routines cannot be used to access I/O ports. Implement x86-specific version to support both PIO and MMIO access, so that drivers for multiple architectures can use these accessors without the need to know whether it's MMIO or PIO. These are ported from Linux kernel lib/iomap.c, with slight changes. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-11-06x86: acpi: Remove redundant Offset (0x00)Andy Shevchenko
New ACPI assembler issues a warning: board/intel/edison/dsdt.asl.tmp 13: Offset (0x00), Remark 2158 - ^ Unnecessary/redundant use of Offset operator Indeed, in the OperationRegion the offset is 0x00 by default. Thus, drop unneeded Offset() use as suggested by ACPI assembler. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-28x86: Fix car_uninit weak symbol definitionBin Meng
Since commit 80df194f0165 ("x86: detect unsupported relocation types"), an error message is seen on QEMU x86 target during boot: do_elf_reloc_fixups32: unsupported relocation type 0x1 at fff841f0, offset = 0xfff00087 do_elf_reloc_fixups32: unsupported relocation type 0x2 at fff841f8, offset = 0xfff00091 Check offset 0xfff00087 and 0xfff00091 in the u-boot ELF image, fff00087 000df401 R_386_32 00000000 car_uninit fff00091 000df402 R_386_PC32 00000000 car_uninit we see R_386_32 and R_386_PC32 relocation type is generated for symbol car_uninit, which is declared as a weak symbol in start.S. However the actual weak symbol implementation ends up nowhere. As we can see below, it's *UND*. $ objdump -t u-boot | grep car_uninit 00000000 w *UND* 00000000 car_uninit With this fix, it is normal now. $ objdump -t u-boot | grep car_uninit fff00094 w F .text.start 00000001 car_uninit Reported-by: Hannes Schmelzer <hannes@schmelzer.or.at> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Tested-by: Hannes Schmelzer <oe5hpm@oevsv.at>
2018-10-28x86: BayTrail: southcluster.asl: Change PCI 64 bit address range / regionStefan Roese
To allow bigger 64 bit prefetchable PCI regions in Linux, this patch changes the base address and range of the ACPI area passed to Linux. BayTrail can only physically access 36 bit of PCI address space. So just chaning the range without changing the base address won't work here, as 0xf.ffff.ffff is already the maximum address. With this patch, a maximum of 16 GiB of local DDR is supported. This should be enough for all BayTrail boards though. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-22x86: quark: Specify X86_TSC_TIMER_EARLY_FREQBin Meng
Specify X86_TSC_TIMER_EARLY_FREQ for Quark SoC so that TSC as the early timer can be supported. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-10-22x86: Fix the mystery of printch() during 64-bit bootBin Meng
At present in arch_setup_gd() it calls printch(' ') at the end which has been a mystery for a long time as without such call the 64-bit U-Boot just does not boot at all. In fact this is due to the bug that board_init_f() was called with boot_flags not being set. Hence whatever value being there in the rdi register becomes the boot_flags if without such magic call. With a printch(' ') call the rdi register is initialized as 0x20 and this value seems to be sane enough for the whole boot process. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2018-10-22x86: put global data pointer into the .data sectionHeinrich Schuchardt
On x86_64 the field global_data_ptr is assigned before relocation. As sections for uninitialized global data (.bss) overlap with the relocation sections (.rela) this destroys the relocation table and leads to spurious errors. Initialization forces the global_data_ptr into a section for initialized global data (.data) which cannot overlap any .rela section. Fixes: a160092a610f ("x86: Support global_data on x86_64") Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-22x86: detect unsupported relocation typesHeinrich Schuchardt
Currently we support only relocations of type ELF64_R_TYPE or ELF32_R_TYPE. We should be warned if other relocation types appear in the relocation sections. This type of message has helped to identify code overwriting a relocation section before relocation and incorrect parsing of relocation tables. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2018-10-22x86: Ensure no instruction sets of MMX/SSE are generated in 64-bit buildBin Meng
With the '-march=core2' fix, it seems that we have some luck that the 64-bit U-Boot boots again. However if we examine the disassembly codes there are still SSE instructions elsewhere which means passing cpu type to GCC is not enough to prevent it from generating these instructions. A simple test case is doing a 'bootefi selftest' from the U-Boot shell and it leads to a reset too. The 'bootefi selftest' reset is even seen with the image created by the relative older GCC 5.4.0, the one shipped by Ubuntu 16.04. The reset actually originates from undefined instruction exception caused by these SSE instructions. To keep U-Boot as a bootloader as simple as possible, we don't want to handle such advanced SIMD stuff. To make sure no MMX/SSE instruction sets are generated, tell GCC not to do this. Note AVX is out of the question as CORE2 is old enough to support AVX yet. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-10-22x86: Specify -march=core2 to build 64-bit U-Boot properBin Meng
With newer kernel.org GCC (7.3.0 or 8.1.0), the u-boot.rom image built for qemu-x86_64 target does not boot. It keeps resetting soon after the 32-bit SPL jumps to 64-bit proper. Debugging shows that the reset happens inside env_callback_init(). 000000000113dd85 <env_callback_init>: 113dd85: 41 54 push %r12 113dd87: 55 push %rbp 113dd88: 31 c0 xor %eax,%eax 113dd8a: 53 push %rbx 113dd8b: 0f 57 c0 xorps %xmm0,%xmm0 Executing "xorps %xmm0,%xmm0" causes CPU to immediately reset. However older GCC like 5.4.0 (the one shipped by Ubuntu 16.04) does not generate such instructions that utilizes SSE for this function - env_callback_init() and U-Boot boots without any issue. Explicitly specifying -march=core2 for newer GCC allows U-Boot proper to boot again. Examine assembly codes of env_callback_init and there is no SSE instruction in that function hence U-Boot continues to boot. core2 seems to be the oldest arch in GCC that supports 64-bit. Like 32-bit U-Boot build we use -march=i386 which is the most conservative cpu type so that the image can run on any x86 processor, let's do the same for the 64-bit U-Boot build. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Reviewed-by: Simon Glass <sjg@chromium.org>