i.MX6: implement enable_caches()

disabled by default until drivers are fixed

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Marek Vasut <marex@denx.de>

i.mx6q: configs: Add fdt_high and initrd_high variables

To be able to load the device tree and initrd correctly, set
the fdt_high and initrd_high environment variables.

Using 0xffffffff implies tha

i.mx6q: configs: Add fdt_high and initrd_high variables

To be able to load the device tree and initrd correctly, set
the fdt_high and initrd_high environment variables.

Using 0xffffffff implies that the device tree and the initrd
are initially copied to working addresses. This will avoid an
additional copy.

Loading the device tree to 0x30000000 and the initrd to 0x3c000000
should work for both boards, the ARM2 and SabreLite.

Example (SabreLite):

fatload mmc 0:2 0x10000000 uImage
fatload mmc 0:2 0x3c000000 uInitrd
fatload mmc 0:2 0x30000000 board.dtb
bootm 0x10000000 0x3c000000 0x30000000

Note: This requires that the kernel has CONFIG_HIGHMEM enabled.

Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
CC: Jason Liu <jason.hui@linaro.org>
CC: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>

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i.mx6q: arm2: Add the enet function support

This enable the network function on the i.mx6q armadillo2
board(arm2), thus we can use tftp to load image from network.

Cc: Stefano Babic <sbabic@denx.de

i.mx6q: arm2: Add the enet function support

This enable the network function on the i.mx6q armadillo2
board(arm2), thus we can use tftp to load image from network.

Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Jason Liu <jason.hui@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>

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Merge branch 'master' of git://git.denx.de/u-boot-arm

* 'master' of git://git.denx.de/u-boot-arm:
M28: Cleanup memsize.o OOT build
i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28
M28: Fix typo

Merge branch 'master' of git://git.denx.de/u-boot-arm

* 'master' of git://git.denx.de/u-boot-arm:
M28: Cleanup memsize.o OOT build
i.MX28: Move SPL to arch/arm/cpu/arm926ejs/mx28
M28: Fix typo
M28: Document that units has to be set to sectors on SD bootcard
i.mx: i.mx6q: add the initial support for i.mx6q ARM2 board
i.mx: mxc_gpio: add the i.mx6q support
i.mx: add the initial support for freescale i.MX6Q processor
i.mx: introduce the armv7/imx-common folder
S5PC2XX: Rename S5pc2XX to exynos
tegra2: Don't use board pointer before it is set up
tegra2: Remove unneeded 'dynamic ram size' message
tegra2: Remove unused low-level Tegra2 UART code
tegra2: Remove unneeded config option
tegra2: Remove unneeded boot code
tegra2: Enable instruction cache
arm: Move CP15 init out of cpu_init_crit()
tegra2: Simplify tegra_start() boot path
tegra2: Add arch_cpu_init() to fire up Cortex-A9
tegra2: Use new GPIO APIs in gpio_config_uart()
tegra2: Add support for Ventana
tegra2: Modify MMC driver to handle power and cd GPIOs
tegra2: Move board_mmc_init into board files

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i.mx: i.mx6q: add the initial support for i.mx6q ARM2 board

Add the initial support for Freescale i.MX6Q Armadillo2 board
Support: MMC boot from slot 0/1, debug UART(UART4), usdhc.

There is two MMC

i.mx: i.mx6q: add the initial support for i.mx6q ARM2 board

Add the initial support for Freescale i.MX6Q Armadillo2 board
Support: MMC boot from slot 0/1, debug UART(UART4), usdhc.

There is two MMC slots on the boards:
mmc dev 0 -> connect USDHC3 -> the lower slot on the board,
mmc dev 1 -> connect USDHC4 -> the upper slot on the board,

Signed-off-by: Jason Liu <jason.hui@linaro.org>
Cc: Stefano Babic <sbabic@denx.de>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>

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