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2018-06-24efi: stub: Move the use_uart assignment immediately after ↵Bin Meng
exit_boot_services() call The use_uart assignment should follow immediately after the call to exit_boot_services(), in case we want some debug output after that. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-06-17efi: stub: Pass EFI GOP information to U-Boot payloadBin Meng
If UEFI BIOS has the graphics output protocol (GOP), let's pass its information to U-Boot payload so that U-Boot can utilize it (eg: an EFI framebuffer driver). Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2018-06-17x86: use EFI calling convention for efi_main on x86_64Ivan Gorinov
UEFI specifies the calling convention used in Microsoft compilers; first arguments of a function are passed in (%rcx, %rdx, %r8, %r9). All other compilers use System V ABI by default, passing first integer arguments of a function in (%rdi, %rsi, %rdx, %rcx, %r8, %r9). These ABI also specify different sets of registers that must be preserved across function calls (callee-saved). GCC allows using the Microsoft calling convention by adding the ms_abi attribute to a function declaration. Current EFI implementation in U-Boot specifies EFIAPI for efi_main() in the test apps but uses default calling convention in lib/efi. Save efi_main() arguments in the startup code on x86_64; use EFI calling convention for _relocate() on x86_64; consistently use EFI calling convention for efi_main() everywhere. Signed-off-by: Ivan Gorinov <ivan.gorinov@intel.com> Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2018-06-13x86: efi: payload: Minor clean up on error message outputBin Meng
If GetMemoryMap() fails, we really want to know EFI_BITS_PER_LONG instead of BITS_PER_LONG. A space and LF are added in places where error message is output to improve readability. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
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>
2018-03-30efi_stub: Fix GDT_NOTSYS checkAlexander Graf
The get_codeseg32() wants to know if a passed in descriptor has flag GDT_NOTSYS set (desc & GDT_NOTSYS), not whether desc and GDT_NOTSYS are not != 0 (desk && GDT_NOTSYS). This is an obvious typo. Fix it up. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-12-05efi_stub: Use efi_uintn_tAlexander Graf
Commit f5a2a93892f ("efi_loader: consistently use efi_uintn_t in boot services") changed the internal EFI API header without adapting its existing EFI stub users. Let's adapt the EFI stub as well. Fixes: f5a2a93892f ("efi_loader: consistently use efi_uintn_t in boot services") Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2016-08-30x86: efi: payload: Make EFI payload build againBin Meng
Since commit 73c5c39 "Makefile: Drop unnecessary -dtb suffixes", EFI payload does not build anymore. This fixes the build. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-03-27efi_stub: Move carriage return before line feed in putc()Bin Meng
A carriage return needs to execute before a line feed. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2015-10-21debug_uart: Adjust the declaration of debug_uart_init()Simon Glass
We want to be able to add other common code to this function. So change the driver's version to have an underscore before it, just like _debug_uart_putc(). Define debug_uart_init() to call this version. Update all drivers to this new method. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-05efi: Add 64-bit payload supportSimon Glass
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>
2015-08-05efi: Add support for loading U-Boot through an EFI stubSimon Glass
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>