IGEP boards now have Device Tree support in the mainline
kernel. To boot an IGEP board using a DT, a uEnv.txt plain
text file could be used to define a custom uenvcmd that will
be run by the default boot command.

It is more convenient to change the default boot command to
allow loading a FDT if it is stored in the boot dir of the
rootfs uSD/MMC partition.

If no FDT is found then the defaul command tries to boot a
zImage without a DT using legacy boot.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>

Able to load the kernel from some form of ext[234] or FAT. Also, with v3.9 and
later of the Linux Kernel, uImage isn't builtable anymore by default, so we
should switch to use the bootz command.

Signed-off-by: Enric Balletbo i Serra <eballetbo@gmail.com>

Commit "OMAP5: emif/ddr: Change emif settings as required for ES1.0 silicon"
(f4010734)
changed sequence to set final DDR PHY config register value at the beginning.
Looks like it was made by mistake and should be reverted.

Signed-off-by: Taras Kondratiuk <taras@ti.com>

Since Commit 7f5eef93 removed OMAP2420H4 support,
arm1136/omap24xx has not been used at all.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

ARM: omap3: Implement dpll5 (HSUSB clk) workaround for OMAP36xx/AM/DM37xx according to errata sprz318e.

In chapter 'Advisory 2.1 USB Host Clock Drift Causes USB Spec Non-compliance in Certain Configurations' of the TI Errata it is recommended to use certain div/mult values for the DPLL5 clock setup.
So far u-boot used the old 34xx values, so I added the errata recommended values specificly for 36xx init only.
Also, the FSEL registers exist no longer, so removed them from init.

Tested this on a AM3703 board with 19.2MHz oscillator, which previously couldnt lock the dpll5 (kernel complained). As a consequence the EHCI USB port wasnt usable in U-Boot and kernel. With this patch, kernel panics disappear and USB working fine in u-boot and kernel.

Signed-off-by: Andreas Naumann <anaumann@ultratronik.de>
[trini: Add extern to <asm/arch-omap3/clock.h>
Signed-off-by: Tom Rini <trini@ti.com>

Gumstix uses 200Mhz RAM on revision 1, 2 & 3 COMs, so use 200MHz
timings rather than 165MHz.  Based on 6cf8bf44b1f8550e12f7f2a16e01890e5de8443d

Signed-off-by: Ash Charles <ashcharles@gmail.com>

Signed-off-by: Ash Charles <ashcharles@gmail.com>

As config was originally based on am335x_evm.h we have also some
duplicate / unnused #defines.

Commit 15191c91 removed these #defines on various AM335x boards but not
for IGEP COM AQUILA. This patch simply removes them for this board.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>

Add to the default environment the possibily to boot from NAND using
a ubi rootfs. Also the partition scheme is set as follows:

                  Start      Size
    SPL         : 0x00000000 0x00080000 (512KiB)
    U-Boot      : 0x00080000 0x00100000 (1MiB)
    U-Boot Env  : 0x00180000 0x00020000 (128KiB)
    File System : 0x001C0000 -

The ubiboot script gets the kernel and the dtb file from the boot directory
of the File System.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>

We will not use CYGNUS names for any IGEP COM based on AM335x processor,
so, to avoid confusion, remove from headers.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>

Now, the default kernel to boot the IGEP COM AQUILA is device tree based. As
old kernel is deprecated we should adapt the boot commands to use DTB files.

Also, with v3.9 and later of the Linux Kernel, uImage isn't builtable anymore
by default, so we should switch to use the bootz command.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>

After commit:

  79cd2f81 config_cmd_default.h: Remove CONFIG_CMD_MEMTEST

It's not necessary to undef the CONFIG_CMD_MEMTEST, so we can remove it from
configuration file.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>

Add config file

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

Add AM43xx support in the required places

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

Adding a new CONFIG_OMAP_COMMON which is included by all boards
that needs to build cpu/armv7/omap-common folder.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

Add dpll and clock data for AM43xx

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

Adding the following data:
-> Prcm structure
-> Base addresses
-> Pin mux structure.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

Add board specific information for AM43xx.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

There are many musb prints in SPL and U-Boot log.
These prints are required only during musb debug.
So replacing printk with pr_debug in musb_core.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>

s_init has the same outline for all the AM33xx based
board. So making it generic.
This also helps in addition of new Soc with minimal changes.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@ti.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>

Cleaning up the clocks layer.
This helps in addition of new Soc with minimal
changes.
This is derived from OMAP4 boards.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>

Locking sequence for all the dplls is same.
In the current code same sequence is done repeatedly
for each dpll. Instead have a generic function
for locking dplls and pass dpll data to that function.

This is derived from OMAP4 boards.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Tested-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>

Configure the tca6424 gpio expander
This allows use of the debug and tri color LEDs.

Signed-off-by: Dan Murphy <dmurphy@ti.com>

Add the tca642x gpio expander driver

Datasheet:
http://www.ti.com/product/tca6424a



Signed-off-by: Dan Murphy <dmurphy@ti.com>

The BeagleBone Black differs from the other AM335x boards in a few
significant ways, so it makes sense to create a custom configuration
for it. In particular, it uses eMMC instead of NAND flash.

Signed-off-by: Justin Waters <justin.waters@timesys.com>

Some boards, such as the BeagleBone Black, have an eMMC chip intstead
of NAND. We can use the eMMC boot partition to store the environment,
since it isn't used for anything else. This allows us to have a
configurable environment on those boards.

Signed-off-by: Justin Waters <justin.waters@timesys.com>

This rule catches images such as MLO.byteswap

Signed-off-by: Justin Waters <justin.waters@timesys.com>

The BeagleBone Black can boot from either the MMC card
or eMMC chip on board. We should try both interfaces.

This modification also allows a graceful fallback if
a device exists but boot images are not present on it.

Changes for v2:

* Fix boot partition - it should always show up as mmcblk0p2
* Fix missing FDT load

Signed-off-by: Justin Waters <justin.waters@timesys.com>

Many modern U-Boot ports enable command line editing and
a history buffer. The am335x_evm configuration is fairly
comprehensive as it is, so a few extra kb should not be
noticable, and it adds a very convenient feature.

Signed-off-by: Justin Waters <justin.waters@timesys.com>

Give the user the ability to disable NAND support by defining
CONFIG_NO_NAND. This will allow custom hardware to easily support
this configuration.

Signed-off-by: Justin Waters <justin.waters@timesys.com>
[trini: Make apply on top of other series]
Signed-off-by: Tom Rini <trini@ti.com>

accessing a lan9303 switch with the cpsw driver results in wrong
speed detection, as the switch sets the BMSR_ERCAP in BMSR
register, and follow read of the MII_STAT1000 register fails, as
the switch does not support it. Current code did not check,
if a phy_read() fails ... fix this.

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Joe Hershberger <joe.hershberger@gmail.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>

The Beaglebone White may be populated with a memory cape that has a NOR
module.  Document how to program it.

Signed-off-by: Tom Rini <trini@ti.com>

NOR requires that s_init be within the first 4KiB of the image so that
we can perform the rest of the required pinmuxing to talk with the rest
of NOR that we are found on.  When NOR_BOOT is set we save our
environment in NOR at 512KiB and a redundant copy at 768KiB.  We avoid
using SPL for this case and u-boot.bin is written directly to the start
of NOR.

We enclose the DMM-related parts of arch/arm/cpu/armv7/am33xx/emif4.c
with TI81xx checks as at this time U-Boot does not discard unused
sections in the main build and this code relies on functions specific to
(and only provided in) ti81xx-related code.

Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Steve Kipisz <s-kipisz2@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>

This patch adds support for the NOR module that attaches
to the memory cape for a Beaglebone board. This does not
add booting support; only support so that you can boot from
SD/MMC and see the NOR module so that it can be programmed.

Signed-off-by: Steve Kipisz <s-kipisz2@ti.com>
[trini: Clean up config changes slightly]
Signed-off-by: Tom Rini <trini@ti.com>

Based on our usage of the GPMC, either with NOR or NAND we do not need
to be setting the irqstatus or irqenable bits and should clear them like
we have historically.

Signed-off-by: Tom Rini <trini@ti.com>

We rework the various board_is_foo() checks to take a pointer to
struct am335x_baseboard_id rather than using a local copy in board.c.
This allows us to make use of the same checks in mux.c as well as fixing
problems when this code could be running from read-only memory.

Reviewed-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Tom Rini <trini@ti.com>

- Style cleanup (# define -> #define)
- Due to ROM issues, redudant loading isn't feasible, so drop.
- Given extra space, increase max size of U-Boot to 512KiB
- Correct env size to match usage (we had not re-defined ENV_SIZE).
- Given extra space, keep env size as 128KiB, add redundant environment.

Reviewed-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Tom Rini <trini@ti.com>

We always set a CONFIG_ENV_IS_...somewhere... so drop the initial define
of NOWHERE.

Reviewed-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Tom Rini <trini@ti.com>

The AM335x GP EVM ships with NAND.  Document programming of the chip
including the redundant locations that the ROM will check.

Signed-off-by: Tom Rini <trini@ti.com>

If no other bootoption works, try loading up device tree and zImage.

This is selected as the last option to allow backward compatibility as
well as support the recent trend in moving kernel boot to using zImage
and device tree.

NOTE: if uImage is present in bootpart, it will try this first and
will assume this is to be booted with bootm (so may be concatenated
image or plain vanilla ATAG MACHINE_ID based image)

Signed-off-by: Nishanth Menon <nm@ti.com>