Add information to identify i.MX23 chips and its known revisions.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

For representing a timeout value, it makes more sense to pass it as
'unsigned int'.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NMarek Vasut <marex@denx.de>
Acked-by: NStefano Babic <sbabic@denx.de>

The DRAM initialization, after SPL has complete, is exactly the same
for all mxs SoCs so we should name it accordinly.

The following boards has been changed:

 * apx4devkit
 * m28evk
 * mx28evk
 * sc_sps_1
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Acked-by: NMarek Vasut <marex@denx.de>
Acked-by: NVeli-Pekka Peltola <veli-pekka.peltola@bluegiga.com>

The internal Ethernet controller is only available on i.MX28
processors so it needs to use CONFIG_MX28 guardian to avoid having
this code called in others.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Acked-by: NMarek Vasut <marex@denx.de>

The sys_proto.h functions (except the boot modes) are compatible with
i.MX233 and i.MX28 so we use 'mxs' prefix for its methods.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

As the register accessing mode is the same for all i.MXS SoCs we ought
to use 'mxs' prefix intead of 'mx28'.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

Most code can be shared between i.MX23 and i.MX28 as both are from
i.MXS family; this source directory structure makes easy to share code
among them.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>
Acked-by: NStefano Babic <sbabic@denx.de>

The information now is gathered from HW_DIGCTL_CHIPID register and
includes the chip modem and revision on the output.
Signed-off-by: NOtavio Salvador <otavio@ossystems.com.br>

No need to define CONFIG_ARCH_CPU_INIT.

All mx28 based boards should use arch_cpu_init().
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NMarek Vasut <marex@denx.de>

If the LCD controller is on before the CPU goes into reset, the traffic on LCDIF
data pins interferes with the BootROM's boot mode sampling. So shut the
controller down.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>

This patch implements code that samples i.MX28 boot pads and reports boot mode
accordingly.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>

Pass memory size from SPL via structure located in SRAM instead of SCRATCH
registers. This allows passing more data about boot from SPL to U-Boot, like the
boot mode pads configuration.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>

This fixes the issue where mxs_dma_init() was called either twice or never,
without introducing any new init hooks.

The idea is to allow each and every device using the APBH DMA block to
configure and request only the channels it uses, instead of making it call init
for all the channels as is now.

The common DMA block init part, which only configures the block, is then called
from CPUs arch_cpu_init() call.

NOTE: This patch depends on:

	http://patchwork.ozlabs.org/patch/150957/Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Tested-by: NFabio Estevam <fabio.estevam@freescale.com>

Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

This patch renames mx28_register to mx28_register_32 in order to
prepare for the introduction of an 8-bit register, mx28_register_8.
Signed-off-by: NRobert Delien <robert@delien.nl>
Acked-by: NMarek Vasut <marex@denx.de>
Tested-by: NMarek Vasut <marex@denx.de>

This patch replaces the use of magice numbers for scratch register
addresses with earlier defined register definitions.
Signed-off-by: NRobert Delien <robert@delien.nl>

Showing CPU frequency during boot is useful information.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Acked-by: NStefano Babic <sbabic@denx.de>

Let dram_init function be a common function, so that other mx28 boards
can reuse it.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NMarek Vasut <marek.vasut@gmail.com>

Let imx_get_mac_from_fuse function be a common function, so that other
mx28 boards can reuse it.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Acked-by: NStefano Babic <sbabic@denx.de>

This patch introduces proper ARM vector handling for i.MX28 CPU. This issue
wasn't addressed because the interrupts weren't enabled on any ARMv5 core,
therefore the issue wasn't noticed earlier.

In previous implementation, the vectoring code used by i.MX28 CPU when an
exception happened was that of the SPL. With this change, the branch target when
an exception happens can be reconfigured by U-Boot.
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>

Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>

This patch supports:
- Timers
- Debug UART
- Clock
Signed-off-by: NMarek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>