u-boot.git/arch/x86/include/asm, branch v2012.04

x86: Convert board_init_f_r to a processing loop

2012-01-04T11:53:14+00:00

Create an init function array for board_init_f_r - This finalises the
migration to a purely array based initialisation mechanism

Also tweak a few comments while we are at it so everything is 'correct'

--
Changes for v2:
 - Renamed to a more apt name
 - Fix bug in set_reloc_flag_r
 - Re-instate gd->flags = boot_flags; in board_init_f
 - Added commit message

x86: Split init functions out of board.c

2012-01-04T11:41:32+00:00

This patch moves towards reducing board.c to simply a set of init cores for
the three initialisation phases (Flash, Flash/RAM, and RAM), a set of three
init function arrays and a init function array processing function

x86: Create weak init_cache() and default enable_caches() functions

2012-01-04T11:19:01+00:00

--
Changes for v2:
 - Tweaked commit title

x86: Use fs for global data

2012-01-04T11:17:24+00:00

Use the base address of the 'F' segment as a pointer to the global data
structure. By adding the linear address (i.e. the 'D' segment address) as
the first word of the global data structure, the address of the global data
relative to the 'D' segment can be found simply, for example, by:

	fs movl 0, %eax

This makes the gd 'pointer' writable prior to relocation (by reloading the
Global Desctriptor Table) which brings x86 into line with all other arches

NOTE: Writing to the gd 'pointer' is expensive (but we only do it
twice) but using it to access global data members (read and write) is
still fairly cheap

--
Changes for v2:
 - Rebased against changes made to patch #3
 - Removed extra indent
 - Tweaked commit message

x86: Simplify Flash-to-RAM code execution transition

2012-01-04T11:17:20+00:00

Move the relocation offset calculation out of assembler and into C. This
also paves the way for the upcoming init sequence simplification by adding
the board_init_f_r flash to RAM transitional function

--
Changes for v2:
 - Added commit message
 - Minor adjustment to new stack address comment

x86: Remove GDR related magic numbers

2012-01-04T10:05:09+00:00

--
Changes for v2:
 - Use an enum
 - Add defined for GDT size (previously added in patch 7)
 - Use X86_ namespace (as per Linux headers)

x86: Import glibc memcpy implementation

2012-01-01T16:58:46+00:00

Taken from glibc version 2.14.90

--
Changes for v2:
 - None

x86: Refactor the zboot innards so they can be reused with a vboot image

2011-12-19T02:26:16+00:00

If vboot successfully verifies a kernel, it will leave it in place and
basically ready to boot. The zeropage table which is part of the x86 boot
protocol is at the end of the kernel, though, instead of the beginning, and
because the image is already in place there's no need to copy it around.
This change refactors the code which implements the zboot command so that
the configuration of the zeropage table and loading the pieces of the
kernel into memory are done separately. Also, because the command line goes
before the zeropage table in vboot which is somewhat incompatible with the
normal protocol, where to put the command line is a now a parameter instead
of being hard coded.

Signed-off-by: Gabe Black

x86: Add support for booting Linux using the 32 bit boot protocol

2011-12-19T02:26:16+00:00

This change conditionally modifies the zboot command so that it can use the
32 bit boot protocol. This is necessary because the 16 bit realmode entry
point assumes that it can call BIOS services which neither coreboot nor
u-boot provide.

Signed-off-by: Gabe Black

x86: Clean up the x86 zimage code in preparation to extend it

2011-12-19T02:26:16+00:00

This change cleans up some formatting issues in the zimage handling code, and
converts it from using offsets added to a base pointer to using the available
structure definitions which were already being included.

Signed-off-by: Gabe Black