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2017-02-07x86: link: Add a config for 64-bit U-BootSimon Glass
Add a new board config which uses 64-bit U-Boot. This is not fully functional but is it a start. Missing features: - SDRAM sizing - Booting linux - EFI support - SCSI device init (and others) Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: Update compile/link flags to support 64-bit U-BootSimon Glass
Update config.mk settings to support both 32-bit and 64-bit U-Boot. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: link: Add build options for SPLSimon Glass
If SPL is used we want to use the generic SPL framework and boot from SPI via a board-specific means. Add these options to the board config file. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: link: Set up device tree for SPLSimon Glass
Add the correct pre-relocation tag so that the required device tree nodes are present in the SPL device tree. On x86 it doesn't make a lot of sense to have a separate SPL device tree. Since everything is in the same ROM we might as well just use the main device tree in both SPL and U-Boot proper. But we haven't implemented that, so this is a good first step. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: link: Add SPL declarations to the binman imageSimon Glass
When building for 64-bit we need to put an SPL binary into the image. Update the binman image description to reflect this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: link: Add a text base for 64-bit U-BootSimon Glass
Set up the 64-bit U-Boot text base if building for that target. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: Add a dummy setjmp implementation for x86_64Simon Glass
We don't have the code for this yet. Add a dummy version for now, so that EFI builds correctly. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: Move setjmp to the i386 directorySimon Glass
This code is only used in 32-bit mode. Move it so that it does not get built with 64-bit U-Boot. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: Move call64 to the i386 directorySimon Glass
This code is only used in 32-bit mode. Move it so that it does not get built with 64-bit U-Boot. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: Change irq_already_routed to a local variableSimon Glass
This avoids using BSS before SDRAM is set up in SPL. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: Move turbo_state to global_dataSimon Glass
To avoid using BSS in SPL before SDRAM is set up, move this field to global_data. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-07x86: Move pirq_routing_table to global_dataSimon Glass
To avoid using BSS in SPL before SDRAM is set up, move this field to global_data. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Support jumping from SPL to U-BootSimon Glass
Add a rough function to handle jumping from 32-bit SPL to 64-bit U-Boot. This still needs work to clean it up. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Drop interrupt support in 64-bit modeSimon Glass
This is not currently supported, so drop the code. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Don't try to boot Linux from SPLSimon Glass
Booting into linux from 64-bit U-Boot is not yet supported. Avoid bringing in the bootm code until it is implemented. Of course 32-bit U-Boot still supports booting into both 32- and 64-bit kernels. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Don't build 32-bit efi files on x86_64Simon Glass
These cannot be built in this mode, so drop them. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Don't build cpu files which are not supported on 64-bitSimon Glass
Some files cannot be built with 64-bit and mostly don't make sense in that context. Disable them. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Don't build call64 and setjmp on 64-bitSimon Glass
These are currently not supported. Calling 64-bit code from 64-bit U-Boot is much simpler, so this code is not needed. setjmp() is not yet implemented for 64-bit. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Don't try to run the VGA BIOS in 64-bit modeSimon Glass
This is not supported, so disable it for now. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: ivybridge: Provide a dummy SDRAM init for 64-bitSimon Glass
We don't support SDRAM init in 64-bit mode since it is essentially impossible to get into that mode before SDRAM set up. Provide dummy functions for now. At some point we will need to pass the SDRAM parameters through from SPL. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: ivybridge: Skip SATA init in SPLSimon Glass
This doesn't work at present. Disable it for now. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Fix up type sizes for 64-bitSimon Glass
Adjust types as needed to support 64-bit compilation. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Drop flag_is_changable() on x86_64Simon Glass
This doesn't build at present and is not used in a 64-bit build. Disable it for now. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Fix up byteorder.h for x86_64Simon Glass
Remove the very old x86 code and add support for 64-bit. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add SPL build rules for start-up codeSimon Glass
When SPL is used we need to build the 16-bit start-up code. Add Makefile rules to handle this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add a link script for SPLSimon Glass
If SPL is used it is always build in 32-bit mode. Add a link script to handle the correct placement of the sections. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add a link script for 64-bit x86Simon Glass
This needs a different image format from 32-bit x86, so add a new link script. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Fix up CONFIG_X86_64 checkSimon Glass
When SPL and U-Boot proper have different settings for this flag, we need to use the correct one. Fix this up in the interrupt code. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Support global_data on x86_64Simon Glass
At present this is just an ordinary variable. We may consider making it a fixed register in the future. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add cpu code for x86_64Simon Glass
There is not much needed at present, but set up a separate directory to put this code as it grows. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Move the i386 code into its own directorySimon Glass
Much of the cpu and interrupt code cannot be compiled on 64-bit x86. Move it into its own directory and build it only in 32-bit mode. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add an SPL implementationSimon Glass
SPL needs to set up the machine ready for loading 64-bit U-Boot and jumping to it. Call the existing init routines in order to accomplish this. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Tidy up use of size_t in relocationSimon Glass
Addresses should not be cast to size_t. Use uintptr_t instead. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add support for 64-bit relocationSimon Glass
Add a 64-bit relocation function. SPL loads U-Boot into RAM at a fixed address and runs it. U-Boot then relocates itself to the top of RAM using this relocation function. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Refactor relocation to prepare for 64-bitSimon Glass
Move the core relocation code into a separate function so that the checking code can be used for 64-bit relocation also. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Do relocation before clearing BSSSimon Glass
The BSS region may overlap with relocations. If we clear BSS we will overwrite the start of the relocation area. This doesn't matter when running from SPI flash, since it is read-only. But when relocating 64-bit U-Boot from one place in RAM to another, relocation will fail because some of its relocations have been zeroed. To fix this, put the ELF fixup call before the BSS clearing call. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: board_r: Set the global data pointer after relocationSimon Glass
Since 'gd' is just a normal variable on 64-bit x86, it is relocated by the time we get to board_init_r(). The old 'gd' variable is passed in as parameter to board_init_r(), presumably for this situation. Assign it on 64-bit x86 so that gd points to the correct data. Options to improve this: - Make gd a fixed register and remove the board_init_r() parameter - Make all archs use this board_init_r() parameter The second has a TODO in the code. The first has a TODO in a future commit ('x86: Support global_data on x86_64') Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06board_f/r: Use static const for the init sequencesSimon Glass
These tables should be declared static const. Unfortunately the table in board_r is updated on machines with manual relocation. Update them. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: board_f: Update init sequence for 64-bit startupSimon Glass
Adjust the code so that 64-bit startup works. Since we don't need to do CAR changes in U-Boot proper anymore (they are done in SPL) we can simplify the flow and return normally from board_init_f(). Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add 64-bit start-up codeSimon Glass
Add code to start up U-Boot in 64-bit mode. It is fairly simple since we are running from RAM and SPL has done the low-level init. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: ivybridge: Allow 32-bit init to move to SPLSimon Glass
Update the Makefile so that some 32-bit init can be built into SPL rather than U-Boot proper. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Use X86_32BIT_INIT instead of X86_RESET_VECTORSimon Glass
Use this new option to control the location of 32-bit init. This will allow us to place this in SPL if needed. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Use X86_16BIT_INIT instead of X86_RESET_VECTORSimon Glass
Use this new option to control the location of 16-bit init. This will allow us to place this in SPL if needed. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Kconfig: Add location options for 16/32-bit initSimon Glass
At present all 16/32-bit init is controlled by CONFIG_X86_RESET_VECTOR. If this is enabled, then U-Boot is the 'first' boot loader and handles execution from the reset vector through to U-Boot's command prompt. If it is not enabled then U-Boot starts at the 32-bit entry and skips most of its init, assuming that the previous boot loader has done this already. With the move to suport 64-bit operation, we have more cases to consider. The 16-bit and 32-bit init may be in SPL rather than in U-Boot proper. Add Kconfig options which control the location of the 16-bit and the 32-bit init. These are not intended to be user-setting except for experimentation. Their values should be determined by whether 64-bit U-Boot is used. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: Add Kconfig options to build 64-bit U-BootSimon Glass
Add a new CONFIG_X86_64 option which will eventually cause U-Boot to be built as a 64-bit application, with SPL doing the 16/32-bit init. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: lib: Fix types and casts for 64-bit compilationSimon Glass
Fix various compiler warnings in the x86 library code. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: fsp: Fix cast for 64-bit compilationSimon Glass
Fix a cast in get_next_hob() that causes warnings on 64-bit machines. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: dts: Mark serial as needed before relocationSimon Glass
We almost always need the serial port before relocation, so mark it as such. This will ensure that it appears in the device tree for SPL, if used. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: ivybridge: Fix types for 64-bit compilationSimon Glass
Fix a few types that causes warnings on 64-bit machines. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2017-02-06x86: ivybridge: Add more debugging for failuresSimon Glass
Add various debug() messages in places where errors occur. This aids with debugging. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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