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2011-04-13x86: Rename i386 to x86Graeme Russ
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2011-04-13x86: Code cleanupGraeme Russ
Make the copyright notices in the x86 files consistent and update them with proper attributions for recent updates Also fix a few comment style/accuracy and whitespace/blank line issues Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2011-02-12x86: Fix incorrect usage of relocation offsetGraeme Russ
x86 has always used relocation offset in the opposite sense to the ELF standard - Fix this
2011-02-12x86: Move call to dram_init_f into board_init_fGraeme Russ
2011-02-12x86: Defer setup of final stackGraeme Russ
2011-02-12sc520: Move RAM sizing code from asm to CGraeme Russ
2011-02-12x86: Use Cache-As-RAM for initial stackGraeme Russ
2011-02-12x86: Move initial gd to fixed locationGraeme Russ
2011-02-12x86: Call early_board_init when warm bootingGraeme Russ
early_board_init has been skipped to avoid SDRAM corruption in the case that a fully relocatable image has been loaded into SDRAM and is being executed from SDRAM. x86 is being aligned with other architectures (ARM and PPC in particlar) and will be using Cache-As-RAM to run a C environment from Flash (or SRAM if you have some). early_board_init may be needed to assist in the setup of Cache-As-RAM and the early C environment
2011-02-12x86: Add processor flags header from linuxGraeme Russ
2011-02-12x86: Fix mangled umlautsGraeme Russ
git mergetool has a nasty habit of mangling umlats - fix ones that have been missed in previous submissions
2010-10-07x86: Implement fully relocatable imageGraeme Russ
u-boot.bin can be loaded at any 4-byte aligned memory location and directly 'jumped' to using the 'go' command using the load address as the start address. Doing so performs a 'warm boot' which skips memory initialisation and other low-level initialisations, relocates U-Boot to upper memory and starts U-Boot in RAM as per normal 'cold boot'
2010-10-07x86: Set cold/warm boot flagGraeme Russ
2010-10-07x86: Place global data below stack before entering CGraeme Russ
By reserving space for the Global Data immediately below the stack during assembly level initialisation, the C declaration of the static global data can be removed, along with the 'RAM Bootstrap' function. This results in cleaner code, and the ability to pass boot-up flags from assembler into C
2010-10-07x86: Dont clobber %eax after getting memory sizeGraeme Russ
By using another register, reduce code size by one instruction
2010-10-07x86: Don't clobber %ebxGraeme Russ
%ebx will hold low-level boot flags and must be preserved
2010-10-07x86: Remove usage of %ebp as a return pointerGraeme Russ
Using %ebp as a return pointer prevents creating 'load anywhere' images
2010-10-07x86: Move ECC initialisation outside RAM initialisationGraeme Russ
To allow for 'load anywhere' images, the %ebp return pointer 'hack' must be removed, so we cannot have two 'calls' to get_mem_size
2010-10-07x86: Remove progress indication in low-level initGraeme Russ
Progress indication is not relocation friendly so remove it in preperation for full relocatability support
2010-10-07x86: Change compiler optionsGraeme Russ
Change to: - reparam=3 - no-from-pointer - no-stack-protector - preferred-stack-boundary=2 - no-top-level-reorder These options make the code a little smaller and faster
2010-10-07x86: Coding Style CleanupGraeme Russ
Perform some basic code cleanups of the x86 files
2010-10-07x86: Move loading of GTD to C codeGraeme Russ
Linux has C macros and code to load the GTD after switching to Protected Mode. Using these greatly simplifies the assembler code
2010-05-06x86: Move GDT to a safe location in RAMGraeme Russ
Currently, the GDT is either located in FLASH or in the non-relocated U-Boot image in RAM. Both of these locations are unsafe as those locations can be erased during a U-Boot update. Move the GDT into the highest available memory location and relocate U-Boot to just below it Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06x86: Add RAM bootstrap functionalityGraeme Russ
Add a parameter to the 32-bit entry to indicate if entry is from Real Mode or not. If entry is from Real Mode, execute the destructive 'sizer' routine to determine memory size as we are booting cold and running in Flash. If not entering from Real Mode, we are executing a U-Boot image from RAM and therefore the memory size is already known (and running 'sizer' will destroy the running image) There are now two 32-bit entry points. The first is the 'in RAM' entry point which exists at the start of the U-Boot binary image. As such, you can load u-boot.bin in RAM and jump directly to the load address without needing to calculate any offsets. The second entry point is used by the real-to-protected mode switch This patch also changes TEXT_BASE to 0x6000000 (in RAM). You can load the resulting image at 0x6000000 and simple go 0x6000000 from the u-boot prompt Hopefully a later patch will completely elliminate any dependency on TEXT_BASE like a relocatable linux kernel (perfect world) Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-05-06x86: Split sc520 memory sizing versus reportingGraeme Russ
This patch allows the low-level assembler boot-strap to obtain the RAM size without calling the destructive 'sizer' routine. This allows boot-strapping from a U-Boot image loaded in RAM Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
2010-04-13i386: Move cpu/i386/* to arch/i386/cpu/*Peter Tyser
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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