x86: Add support for starting 64-bit kernel

Add code to jump to a 64-bit Linux kernel. We need to set up a flat page
table structure, a new GDT and then go through a few hoops in the right
order.

Signed-off-by: Simon Glass <sjg@chromium.org>
x86: Move kernel boot function to arch/x86/lib/bootm.c

The boot_zimage() function is badly named it can also boot a raw kernel.
Rename it, and try to avoid pointers for memory addresses as it involves
lots of casting.

Signed-off-by: Simon Glass <sjg@chromium.org>
x86: image: Add new image type for x64_64

This is a bit odd in that we are permitted to boot images for either, even
though they are separate architectures.

Signed-off-by: Simon Glass <sjg@chromium.org>
x86: bootm: Support booting a 64-bit raw kernel

Detect an x86_64 kernel and boot it in 64-bit mode.

Signed-off-by: Simon Glass <sjg@chromium.org>
x86: Correct a few progress message nits

We should use puts() instead of printf() where possible. Also clarify
the setup.bin message.

Signed-off-by: Simon Glass <sjg@chromium.org>
i2c: mxs: Consolidate hard-coded bus address

This patch prepares the MXS I2C driver for the conversion to the
new I2C driver framework by pulling out the hard-coded I2C0 address
from all the places.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
i2c: mxs: Add basic support for i2c framework

This patch just converts the function prototypes used throughout
this driver to match those of the i2c framework. There is so far
no functional change. This patch does not do the deeper integration
of the framework bits.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
i2c: mxs: Pass the i2c_adapter around

This patch permeates the struct i2c_adapter throughout the driver,
so that it can be used to determine which adapter should be used.
Note that the driver still supports only one adapter. Note that
the patch does shuffle mxs_i2c_set_bus_speed() to the top of the
driver, but the function remains unchanged.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
i2c: mxs: Add support for I2C 1 on i.MX28

Add support for I2C bus 1 on the i.MX28.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
i2c: designware: Convert driver to multibus/multiadapter framework

In preparation for the SoCFPGA support of the designware I2C driver,
convert this driver to the common CONFIG_SYS_I2C framework.

This patch converts all users of this driver, this is:

- ST spearxxx boards
- AXS101 (ARC700 platform)

I couldn't test this patch on those boards. Only compile tested for all
spear boards. And tested on SoCFPGA.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Tested-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Vipin Kumar <vk.vipin@gmail.com>
Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
kconfig: arm: introduce symbol for ARM CPUs

This commit introduces a Kconfig symbol for each ARM CPU:
CPU_ARM720T, CPU_ARM920T, CPU_ARM926EJS, CPU_ARM946ES, CPU_ARM1136,
CPU_ARM1176, CPU_V7, CPU_PXA, CPU_SA1100.
Also, it adds the CPU feature Kconfig symbol HAS_VBAR which is selected
for CPU_ARM1176 and CPU_V7.

For each target, the corresponding CPU is selected and the definition of
SYS_CPU in the corresponding Kconfig file is removed.

Also, it removes redundant "string" type in some Kconfig files.

Signed-off-by: Georges Savoundararadj <savoundg@gmail.com>
Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
arm: make .vectors section allocatable

A regression was introduced in commit 41623c91. The consequence of that
is the non-relocation of the section .vectors symbols :
_undefined_instruction, _software_interrupt, _prefetch_abort,
_data_abort, _not_used, _irq and _fiq.

Before commit 41623c91, the exception vectors were in a .text section.
The .text section has the attributes allocatable and executable [1].

In commit 41623c91, a specific section is created, called .vectors, with
the attribute executable only.

What have changed between commit 41623c91^ and 41623c91 is the attribute
of the section which contains the exception vectors.
An allocatable section is "a section [that] occupies memory during
process execution" [1] which is the case of the section .vectors.
Adding the lacking attribute (SHF_ALLOC or "a") for the definition of
the section .vectors fixed the issue.

To summarize, the fix has to mark .vectors as allocatable because the
exception vectors reside in "memory during execution" and they need to
be relocated.

[1] http://man7.org/linux/man-pages/man5/elf.5.html

Signed-off-by: Georges Savoundararadj <savoundg@gmail.com>
Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
arm: relocate the exception vectors

This commit relocates the exception vectors.
As ARM1176 and ARMv7 have the security extensions, it uses VBAR.  For
the other ARM processors, it copies the relocated exception vectors to
the correct address: 0x00000000 or 0xFFFF0000.

Signed-off-by: Georges Savoundararadj <savoundg@gmail.com>
Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Tom Warren <twarren@nvidia.com>
arm: interrupt_init: set sp in IRQ/FIQ modes

Before this commit, the stack addresses for IRQ and FIQ modes,
IRQ_STACK_START and FIQ_STACK_START, were computed in interrupt_init but
they were not used.

This commit sets the stack pointers for IRQ and FIQ modes.

Signed-off-by: Georges Savoundararadj <savoundg@gmail.com>
Acked-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
ARM: UniPhier: make pinmon command optional

Add CONFIG_CMD_PINMON to UniPhier-specific Kconfig and make the
"pinmon" command user-configurable.  This command can be disabled
via the configuration if users do not need it.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
serial: UniPhier: add .pending handler

Without .pending handler, tstc() function always returns 1.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
serial: UniPhier: add static to locally used functions

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
powerpc: tqm8xx*: convert to generic board

This converts all TQM8xx boards (MPC8xx based) to generic board.

Signed-off-by: Wolfgang Denk <wd@denx.de>
powerpc: TQM5200: convert to generic board

Signed-off-by: Wolfgang Denk <wd@denx.de>
x86: config: Increase CONFIG_SYS_BOOTM_LEN to 16MB

The code density of x86_64 is not wonderful. Increase the maximum boot
size and adjust the load address to cope.

Signed-off-by: Simon Glass <sjg@chromium.org>