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| * x86: qemu: Support operation as an EFI payloadSimon Glass2015-08-05-3/+9
| | | | | | | | | | | | | | | | | | Disable a few things which interfere with the EFI init. This allows QEMU to to boot into EFI, load a U-Boot payload then boot to the U-Boot prompt. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: baytrail: Support operation as an EFI payloadSimon Glass2015-08-05-3/+8
| | | | | | | | | | | | | | | | | | Disable a few things which interfere with the EFI init. This allows the Minnowboard MAX to boot into EFI, load a U-Boot payload then boot to the U-Boot prompt. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add helper code for running from EFISimon Glass2015-08-05-0/+165
| | | | | | | | | | | | | | | | | | | | When U-Boot is running from EFI some of the x86 init is replaced with EFI-specific init. For example, since DRAM has already been set up, we only need to find it, not init it. Add these functions so that boards can easily allow booting from EFI if required. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Handle running as EFI payloadSimon Glass2015-08-05-10/+43
| | | | | | | | | | | | | | | | | | When U-Boot runs as an EFI payload it needs to avoid setting up the CPU again. Also U-Boot currently does not handle interrupts for many devices, so run with interrupts disabled. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Add a command to display the memory mapSimon Glass2015-08-05-0/+258
| | | | | | | | | | | | | | | | | | | | The EFI memory map is passed from the stub to U-Boot in a table. Add a command to display it in a vaguely readable fashion. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested on QEMU Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Add functions for decoding the EFI tablesSimon Glass2015-08-05-0/+48
| | | | | | | | | | | | | | | | The EFI stub can pass a table to U-Boot with information about the memory map Potentially other things will follow. Add a way to access this table. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add support for passing tables into U-BootSimon Glass2015-08-05-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | The EFI stub provides information to U-Boot in a table. This includes the memory map which is needed to decide where to relocate U-Boot. Collect this information in the early init code and store it in global_data. Fix up the BIST code at the same time since we don't have it when booting from EFI and can assume it is 0. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Add 64-bit payload supportSimon Glass2015-08-05-6/+143
| | | | | | | | | | | | | | | | | | | | | | | | Most EFI implementations use 64-bit. Add a way to build U-Boot as a 64-bit EFI payload. The payload unpacks a (32-bit) U-Boot and starts it. This can be enabled for x86 boards at present. Signed-off-by: Simon Glass <sjg@chromium.org> Improvements to how the payload is built: Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add a way to call 32-bit code from 64-bit modeSimon Glass2015-08-05-0/+79
| | | | | | | | | | | | | | | | | | The procedure to drop from 64-bit mode to 32-bit is a bit messy. Add a function to take care of it. It requires identity-mapped pages and that the calling code is running below 4GB. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add an enum for some commonly-used GDT bitsSimon Glass2015-08-05-0/+18
| | | | | | | | | | | | | | | | Rather than add these as open-coded values, create an enum with the commonly used flags. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Support building the EFI stubSimon Glass2015-08-05-1/+25
| | | | | | | | | | | | | | | | Add support for building a 32/64-bit EFI stub for x86. This involves building the startup and relocation code for either i386 or x86_64. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Add support for loading U-Boot through an EFI stubSimon Glass2015-08-05-0/+376
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is useful to be able to load U-Boot onto a board even if is it already running EFI. This can allow access to the U-Boot command interface, flexible booting options and easier development. The easiest way to do this is to build U-Boot as a binary blob and have an EFI stub copy it into RAM. Add support for this feature, targeting 32-bit initially. Also add a way to detect when U-Boot has been loaded via a stub. This goes in common.h since it needs to be widely available so that we avoid redoing initialisation that should be skipped. Signed-off-by: Simon Glass <sjg@chromium.org> Improvements to how the payload is built: Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add relocation and link script for a 64-bit EFI applicationSimon Glass2015-08-05-0/+149
| | | | | | | | | | | | | | | | | | | | Add a linker script and relocation code for building 64-bit EFI applications. This can be used for the EFI stub. Signed-off-by: Simon Glass <sjg@chromium.org> Improvements to how the payload is built: Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add definitions for the x86-efi board and plumb it inBen Stoltz2015-08-05-0/+50
| | | | | | | | | | | | | | | | Add configuration and Kconfig changes for this board. Signed-off-by: Ben Stoltz <stoltz@google.com> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Allow relocation code to build without text baseSimon Glass2015-08-05-6/+11
| | | | | | | | | | | | | | | | | | This code currently requires CONFIG_SYS_TEXT_BASE but this should be unnecessary. As a first step, remove the build-time limitation and report an error instead. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: dts: Add a device tree file for EFISimon Glass2015-08-05-0/+23
| | | | | | | | | | | | | | | | This contains just enough to bring up the serial UART. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add EFI board codeBen Stoltz2015-08-05-0/+66
| | | | | | | | | | | | | | | | | | | | Add support for the efi-x86 board, which supports running U-Boot as an EFI 32-bit application. Signed-off-by: Ben Stoltz <stoltz@google.com> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add support for U-Boot as an EFI applicationBen Stoltz2015-08-05-0/+319
| | | | | | | | | | | | | | | | | | | | Add the required x86 glue code. This includes the initial start-up, relocation and jumping to efi_main(). We also need to avoid fiddling with interrupts. Signed-off-by: Ben Stoltz <stoltz@google.com> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add asm/elf.h for x86-specific ELF definitionsSimon Glass2015-08-05-0/+46
| | | | | | | | | | | | | | | | Bring in this file from Linux 4.1. It supports relocation features specific to x86. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Support skipping relocation for EFISimon Glass2015-08-05-0/+6
| | | | | | | | | | | | | | | | When running as an EFI application we must skip relocation. Add support for this in the x86 relocation code. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Support building a u-boot-app.efi executableSimon Glass2015-08-05-0/+5
| | | | | | | | | | | | | | | | | | Add support for building U-Boot as an EFI application with a .efi suffix. This can be loaded by EFI provided that EFI has the same bit width (32- or 64-bit) as U-Boot. This unfortunate limitation is imposed by EFI. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Set up toolchain flags for running as EFI applicationBen Stoltz2015-08-05-3/+27
| | | | | | | | | | | | | | | | | | | | Adjust the toolchain flags to build U-Boot as a relocatable shared library, as required by EFI. Signed-off-by: Ben Stoltz <stoltz@google.com> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Drop CONFIG_SYS_TEXT_BASE for EFIBen Stoltz2015-08-05-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | When U-Boot runs as an EFI application is does not have a definition of CONFIG_SYS_TEXT_BASE. U-Boot is a relocatable application and the relocation is done by EFI. U-Boot can be loaded at any address. Ensure that this CONFIG option is not set in this case. Signed-off-by: Ben Stoltz <stoltz@google.com> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Add a serial driverSimon Glass2015-08-05-0/+167
| | | | | | | | | | | | | | | | | | Add a serial driver which makes use of EFI's console in/out service. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested on Intel Crown Bay and QEMU Tested-by: Bin Meng <bmeng.cn@gmail.com>
| * Add a way to skip relocationSimon Glass2015-08-05-0/+10
| | | | | | | | | | | | | | | | | | | | | | When running U-Boot as an EFI application we cannot relocate since we do not have relocation information. U-Boot has already been relocated to a suitable address. Add a global_data flag to control skipping relocation. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Update README to explain booting Ubuntu on MinnowmaxSimon Glass2015-08-05-0/+278
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The steps required to boot a Linux distribution from U-Boot on x86 are not very complicated, but it is a good idea to have these written down in an accessible place. Document how to examine the boot media from U-Boot, how to load a kernel, load a ramdisk, set the kernel boot arguments and start the kernel. With these instructions Ubuntu boots mostly normally on Minnowmax. Note that the TSC timer does not operate correctly and gives warnings in the boot log. I expect that ACPI support will solve this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: minnowmax: Drop the old PCI settingsSimon Glass2015-08-05-12/+0
| | | | | | | | | | | | | | | | These are now in the device tree so we don't need to use the CONFIG options. Drop them. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: dts: Fix typo in intel,irq-router.txtSimon Glass2015-08-05-2/+2
| | | | | | | | | | | | | | Fix a small typo in this binding file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Drop CONFIG_DCACHE_RAM_MRC_VAR_SIZE from header fileSimon Glass2015-08-05-1/+0
| | | | | | | | | | | | | | This is provided in Kconfig so we don't need it here. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Move CONFIG_X86_SERIAL to KconfigSimon Glass2015-08-05-10/+11
| | | | | | | | | | | | | | Move this config option to Kconfig and tidy up. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Move Chrome OS options to defconfigSimon Glass2015-08-05-3/+6
| | | | | | | | | | | | | | Drop these from the header file and use Kconfig instead. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * dm: Add a return value comment to device_get_child()Simon Glass2015-08-05-1/+3
| | | | | | | | | | | | | | At present this function does not specify its return value. Fix it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * pci: Indicate prefetchable memory allocate when debuggingSimon Glass2015-08-05-2/+3
| | | | | | | | | | | | | | | | | | | | At present the PCI output displays 'Mem' when it allocates memory for a PCI device, whether it is prefetchable or not. There is a distinction since the memory comes from separate pools. Use 'Prf' instead of 'Mem' when allocating prefetchable memory. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * pci: Add a constant for an invalid interruptSimon Glass2015-08-05-1/+4
| | | | | | | | | | | | | | Rather than using 0xff in the code, add a constant. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Display the correct initcall pre-relocation valuesSimon Glass2015-08-05-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | With EFI the start address of U-Boot is specified differently. We could consider just setting GD_FLG_RELOC and then setting up reloc_off. But that flag has other implementations and we are not able to use U-Boot relocation which this flag implies. Instead, just add a special case for EFI. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Avoid using non-existent text baseBen Stoltz2015-08-05-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | When U-Boot runs as an EFI application is does not have a definition of CONFIG_SYS_TEXT_BASE. U-Boot is a relocatable application and the relocation is done by EFI. U-Boot can be loaded at any address. This is similar to how sandbox works. Adjust the early board init to deal with this. Signed-off-by: Ben Stoltz <stoltz@google.com> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * efi: Add start-up library codeSimon Glass2015-08-05-64/+887
| | | | | | | | | | | | | | | | | | | | | | When running as an EFI application, U-Boot must request memory from EFI, and provide access to the boot services U-Boot needs. Add library code to perform these tasks. This includes efi_main() which is the entry point from EFI. U-Boot is built as a shared library. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Allow use of global_data with EFISimon Glass2015-08-05-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On x86 the global_data pointer is provided through a somewhat-bizarre and x86-specific mechanism: the F segment register is set to a pointer to the start of global_data, so that accesses can use this build-in register. When running as an EFI application we don't want to mess with the Global Descriptor Table (GDT) and there is little advantage (in terms of code size) to doing so. Allow global_data to be a simple variable in this case. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * pci: Fix up code for CONFIG_PCI_ENUM_ONLYSimon Glass2015-08-05-1/+3
| | | | | | | | | | | | | | | | This option is not used by any board but appears to still be useful, at least for testing. With recent commits it does not build, so fix it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * pci: Use debug() instead of DEBUGF() in pci_auto.cSimon Glass2015-08-05-25/+23
| | | | | | | | | | | | | | | | | | This file does not need its own way of doing debug(). Clean it up to use the new way. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Pavel Machek <pavel@denx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Tidy up a few minor issues with interruptsSimon Glass2015-08-05-5/+4
| | | | | | | | | | | | | | | | Fix a typo, remove an unused field and make sure to use existing #define constants instead of open-coded values. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add some missing global_data declarations in files that use gdSimon Glass2015-08-05-0/+12
| | | | | | | | | | | | | | Some files use global_data but don't declare it. Fix this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Tidy up the 64-bit calling codeSimon Glass2015-08-05-2/+2
| | | | | | | | | | | | | | | | The GDT works but technically the length is incorrect. Fix this and add a comment. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Drop unused copy_fdt_to_ram()Simon Glass2015-08-05-19/+0
| | | | | | | | | | | | | | | | This is now handled by generic U-Boot code so we do not need an x86 version. It is no-longer called, so remove it. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Tidy up global_data flagsSimon Glass2015-08-05-7/+11
| | | | | | | | | | | | | | | | | | | | These flags now overlap some global ones. Adjust the x86-specific flags to avoid this. Since this requires a change to the start.S code, add a way for tools to find the 32-bit cold reset entry point. Previously this was at a fixed offset. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * Reserve the top 16 flag bits for architecture-specific useSimon Glass2015-08-05-1/+1
| | | | | | | | | | | | | | | | | | Add a convention that the generic global_data only occupy the bottom 16 bits of the flags word, so that there is less chance of a conflict. At present the x86 flags conflict. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Use CR0 constants in CPU initSimon Glass2015-08-05-1/+1
| | | | | | | | | | | | | | We should use these constants where possible. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * x86: Add various minor tidy-ups to the 32-bit startup codeSimon Glass2015-08-05-20/+26
| | | | | | | | | | | | | | | | Fix a typo, improve some comments and add a little more detail in some cases. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * Bring in __aligned_u64 and friends to linux/types.hSimon Glass2015-08-05-1/+5
| | | | | | | | | | | | | | | | These will be used for efi.h both for U-Boot running as an EFI application and as a payload. They come from Linux 4.1. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
| * Allow objcopy to work without filling gaps with 0xffSimon Glass2015-08-05-3/+7
| | | | | | | | | | | | | | | | | | This is currently done for all targets, since 0xff is the default erased value for most flash devices. In some cases this is not what we want (e.g. for EFI images) so provide a command to do a vanilla objcopy. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
generated by cgit v1.1 at 2024-08-21 22:41:41 +0000