Add support for "st,stm32mp13-bsec" for STM32MP13x in the
bsec driver based on OP-TEE pseudo TA STM32MP BSEC.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
When OP-TEE is used, the SMC for BSEC management are not available and
the STM32MP BSEC pseudo TA must be used (it is mandatory for STM32MP13
and it is a new feature for STM32MP15x).
The BSEC driver try to open a session to this PTA BSEC at probe
and use it for OTP read or write access to fuse or to shadow.
This patch also adapts the commands stm32key and stboard to handle
the BSEC_LOCK_PERM lock value instead of 1.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Remove unnecessary return in stm32mp_bsec_write_lock and replace tab
by space for plat_auto opts.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
The timer units in the stm32mp15x CPUs have interrupts, depending on the
timer flavour either one "global" or four dedicated ones. Add the irqs
to the timer units on stm32mp15x.
Sync the DT Files with linux kernel v6.1 and with commit a9b70102253ce
("ARM: dts: stm32: Add timer interrupts on stm32mp15")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Remove unnecessary space in device tree stm32mp15xx-dkx.dtsi.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
The include file stm32mp1-clksrc.h is not necessary for the SCMI STM32MP15
dtsi files as the clock tree is not defined in the U-Boot SCMI device tree;
these SCMI device tree only support TFABOOT with stm32mp15_defconfig,
SPL with the basic boot defconfig is not supported.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add support of offset and linear calibration for STM32MP15.
The calibration is performed once at probe. The ADC is set in power on
state for calibration. It remains in this state after calibration,
to give to the kernel the opportunity to retrieve calibration data,
directly from the ADC.
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add support for USB2514B onboard hub on stm32mp157c EV1 board. The HUB
is supplied by a 3v3 PMIC regulator.
[backport from linux ad9591b01d24]
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Tested-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Activate the USB onboard HUB driver, that is used to enable the HUB supply
on STM32MP15 EVAL, DK1 and DK2 boards.
This avoids marking the 3v3 corresponding regulator as always-on.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
The main issue the driver addresses is that a USB hub needs to be
powered before it can be discovered. This is often solved by using
"regulator-always-on".
This driver is inspired by the Linux v6.1 driver. It only enables (or
disables) the hub vdd (3v3) supply, so it can be enumerated.
Scanning of the device tree is done in a similar manner to the sandbox,
by the usb-uclass. DT part looks like:
&usbh_ehci {
...
#address-cells = <1>;
#size-cells = <0>;
hub@1 {
compatible = "usb424,2514";
reg = <1>;
vdd-supply = <&v3v3>;
};
};
When the bus gets probed, the driver is automatically probed/removed from
the bus tree, as an example on stm32:
STM32MP> usb start
starting USB...
STM32MP> dm tree
Class Index Probed Driver Name
-----------------------------------------------------------
usb 0 [ + ] ehci_generic | |-- usb@5800d000
usb_hub 0 [ + ] usb_onboard_hub | | `-- hub@1
usb_hub 1 [ + ] usb_hub | | `-- usb_hub
STM32MP> usb tree
USB device tree:
1 Hub (480 Mb/s, 0mA)
| u-boot EHCI Host Controller
|
+-2 Hub (480 Mb/s, 2mA)
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
- Assorted Kconfig cleanups, code clean ups, env+ubi updates, correct
return value propagation out of environment scripts, and update CI to
latest "jammy" tag.
phy-stm32-usbphyc bindings uses a connector node with vbus-supply
property.
[backport from linux 43e55d778a6b]
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Update to the latest "jammy" tag. This requires us to list libc6-i386 as
a required package to install (for nokia_rx51 tests) that was previously
implicit.
Signed-off-by: Tom Rini <trini@konsulko.com>
Having NXP specific items in the main menu is confusing. Especially
the comment line
*** Other functionality shared between NXP SoCs ***
is simply misleading.
Move all NXP stuff into a separate sub-menu.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Put all entries for skipping low-level initialization into a sub-menu.
Use different titles for main U-Boot, SPL, TPL.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
In preparation of adding the infodocs target to our CI install the
prerequisite texinfo software package.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
[BUG]
Since btrfs supports single device RAID0 at mkfs time after btrfs-progs
v5.14, if we create a single device raid0 btrfs, and created a file
crossing stripe boundary:
# mkfs.btrfs -m dup -d raid0 test.img
# mount test.img mnt
# xfs_io -f -c "pwrite 0 128K" mnt/file
# umount mnt
Since btrfs is using 64K as stripe length, above 128K data write is
definitely going to cross at least one stripe boundary.
Then u-boot would fail to read above 128K file:
=> host bind 0 /home/adam/test.img
=> ls host 0
< > 131072 Fri Dec 30 00:18:25 2022 file
=> load host 0 0 file
BTRFS: An error occurred while reading file file
Failed to load 'file'
[CAUSE]
Unlike tree blocks read, data extent reads doesn't consider cases in which
one data extent can cross stripe boundary.
In read_data_extent(), we just call btrfs_map_block() once and read the
first mapped range.
And if the first mapped range is smaller than the desired range, it
would return error.
But since even single device btrfs can utilize RAID0 profiles, the first
mapped range can only be at most 64K for RAID0 profiles, and cause false
error.
[FIX]
Just like read_whole_eb(), we should call btrfs_map_block() in a loop
until we read all data.
Since we're here, also add extra error messages for the following cases:
- btrfs_map_block() failure
We already have the error message for it.
- Missing device
This should not happen, as we only support single device for now.
- __btrfs_devread() failure
With this bug fixed, btrfs driver of u-boot can properly read the above
128K file, and have the correct content:
=> host bind 0 /home/adam/test.img
=> ls host 0
< > 131072 Fri Dec 30 00:18:25 2022 file
=> load host 0 0 file
131072 bytes read in 0 ms
=> md5sum 0 0x20000
md5 for 00000000 ... 0001ffff ==> d48858312a922db7eb86377f638dbc9f
^^^ Above md5sum also matches.
Reported-by: Sam Winchenbach <swichenbach@tethers.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
sata_sil.c is PCI driver and without CONFIG_PCI is building of U-Boot failing:
LD u-boot
ld.bfd: drivers/ata/sata_sil.o: in function `sil_exec_cmd':
drivers/ata/sata_sil.c:148: undefined reference to `dm_pci_phys_to_bus'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_pci_probe':
drivers/ata/sata_sil.c:687: undefined reference to `dm_pci_get_bdf'
ld.bfd: drivers/ata/sata_sil.c:691: undefined reference to `dm_pci_read_config16'
ld.bfd: drivers/ata/sata_sil.c:701: undefined reference to `dm_pci_map_bar'
ld.bfd: drivers/ata/sata_sil.c:704: undefined reference to `dm_pci_map_bar'
ld.bfd: drivers/ata/sata_sil.c:713: undefined reference to `dm_pci_write_config16'
ld.bfd: drivers/ata/sata_sil.c:717: undefined reference to `dm_pci_read_config16'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_cmd_identify_device':
drivers/ata/sata_sil.c:256: undefined reference to `dm_pci_phys_to_bus'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_sata_rw_cmd':
drivers/ata/sata_sil.c:330: undefined reference to `dm_pci_phys_to_bus'
ld.bfd: drivers/ata/sata_sil.o: in function `sil_sata_rw_cmd_ext':
drivers/ata/sata_sil.c:377: undefined reference to `dm_pci_phys_to_bus'
make: *** [Makefile:1778: u-boot] Error 1
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Use the ut_assert macros for more useful error messages.
Signed-off-by: Brandon Maier <brandon.maier@collins.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The Linux kernel appends 4 bytes to the end of compressed kernel Images
containing the uncompressed image size. They are used to make
self-decompressing Images easier. However for archs that don't support
self-decompression, like ARM64, U-Boot must be able to decompress the
image with the garbage data.
The existing decompressors already support this. This unit test was
added while working on zstd support as upstream zstd will error if there
is garbage data in the input buffer, and special care was needed to
support this.
Signed-off-by: Brandon Maier <brandon.maier@collins.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
For a squashfs filesystem, the fragment table is followed by
the following tables: NFS export table, ID table, xattr table.
The export and xattr tables are both completely optional, but
the ID table is mandatory. The Linux implementation refuses to
mount the image if the ID table is missing. Tables that are no
present have their location in the super block set
to 0xFFFFFFFFFFFFFFFF.
The u-boot implementation previously assumed that it can always
rely on the export table location as an upper bound for the fragment
table, trying (and failing) to read past filesystem bounds if it
is not present.
This patch changes the driver to use the ID table instead and only
use the export table location if it lies between the two.
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Add a test which validates that exit from environment script works as
expected, including return value propagation and clipping to positive
integers.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Make sure the 'exit' command as well as 'exit $val' command exits
from environment scripts immediately and propagates return value
out of those scripts fully. That means the following behavior is
expected:
"
=> setenv foo 'echo bar ; exit 1' ; run foo ; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0' ; run foo ; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2' ; run foo ; echo $?
bar
0
"
As well as the followin behavior:
"
=> setenv foo 'echo bar ; exit 3 ; echo fail'; run foo; echo $?
bar
3
=> setenv foo 'echo bar ; exit 1 ; echo fail'; run foo; echo $?
bar
1
=> setenv foo 'echo bar ; exit 0 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -1 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit -2 ; echo fail'; run foo; echo $?
bar
0
=> setenv foo 'echo bar ; exit ; echo fail'; run foo; echo $?
bar
0
"
Fixes: 8c4e3b79bd ("cmd: exit: Fix return value")
Reviewed-by: Hector Palacios <hector.palacios@digi.com>
Signed-off-by: Marek Vasut <marex@denx.de>
This adds the UUU UCmd functionality as an OEM command. While the
fastboot tool allows sending arbitrary commands as long as they are
prefixed with "oem". This allows running generic U-Boot commands over
fastboot without UUU, which is especially useful when not using USB.
This is really the route we should have gone in the first place when
adding these commands.
While we're here, clean up the UUU Kconfig a bit.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Much of the fastboot code predates the introduction of Kconfig and
has quite a few #ifdefs in it which is unnecessary now that we can use
IS_ENABLED() et al.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Sean Anderson <sean.anderson@seco.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # on vim3l
In U-Boot driver model the devices can be referenced by
phandle in the U-Boot configuration nodes.
Without a valid node provided during the bind, the driver
associated to OP-TEE TA can't be referenced.
For example to force the sequence number with alias
(.flags = DM_UC_FLAG_SEQ_ALIAS)
aliases {
rng0 = &optee;
};
or other configuration:
board-sysinfo {
compatible = "vendor,sysinfo-board";
ramdom = <&optee>;
}
With this patch all drivers bound from OP-TEE service
discovery are now associated are associated to OP-TEE
node, allowing to identify by phandle the driver
provided by the TA for one UCLASS without modifying
device tree.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Add trace in env save to indicate any errors to end user and avoid
silent output when the command 'env erase' is not executed as it is
done in env_save with commit 8968288cb4 ("env: add failing trace in
env_save")
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Add support of opts erase for ubi env backend, this opts is used by
command 'env erase'.
This command only zero-fill the env UBI volume CONFIG_ENV_UBI_VOLUME
and CONFIG_ENV_UBI_VOLUME_REDUND, so the saved environment becomes
invalid.
This patch introduces a local define ENV_UBI_VOLUME_REDUND
only to avoid #if in the code, as CONFIG_ENV_UBI_VOLUME_REDUND
is only defined when CONFIG_SYS_REDUNDAND_ENVIRONMENT is defined.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Checks that `make u-boot-initial-env` creates the text file
u-boot-initial-env and checks that it at least contains
`board=<something>`.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When the number of parameters is wrong, the return value should be processed in
the same way as other cmds, return CMD_RET_USAGE so that it can print the information.
Signed-off-by: Shenlin Liang <liangshenlin@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The two configuration CONFIG_MTDIDS_DEFAULT and CONFIG_MTDPARTS_DEFAULT
are not needed with mtd configuration CONFIG_SYS_MTDPARTS_RUNTIME which
allows the MTDIDS and MTDPARTS to be configured at runtime.
This patch has no defconfig impacts because CONFIG_SYS_MTDPARTS_RUNTIME
is only used by two platforms (stm32mp and igep00x0) which don't define
CONFIG_MTDIDS_DEFAULT or CONFIG_MTDPARTS_DEFAULT.
This patch solves an UBI environment load issue for NAND boot for
stm32mp15 platform. In mtd_uboot.c, when GD_FLG_ENV_READY is not set,
env_get_f() return a EMPTY string, define in default_environment[]
because CONFIG_MTDIDS_DEFAULT="" and CONFIG_MTDPARTS_DEFAULT="",
but a NULL pointer is expected to allow call of board_mtdparts_default.
Without mtdparts, the env partition [CONFIG_ENV_UBI_PART="UBI"] is not
found in env/ubi.c [CONFIG_ENV_IS_IN_UBI].
It is not a problem when env becomes ready, as these empty variables are
removed form U-Boot environment in env_import() / himport_r().
Fixes: a331017c23 ("Complete migration of MTDPARTS_DEFAULT / MTDIDS_DEFAULT, include in environment")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
add initialization of variable 'node',this can aviod the building
warning:
'node' may be used uninitialized [-Wmaybe-uninitialized]
Signed-off-by: Haijun Qin <qinhaijun@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This adds an NVMEM reboot mode driver, similar to Linux's
implementation. This allows using the same device tree binding for Linux
and U-Boot in most cases.
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This adds support for reading the battery-backed memory present on these
RTCs. This modifies the read/write methods to access the RAM instead of
raw register offsets. No one was using these in-tree, so we should be
fine changing them.
We use the "standard" address space window to access the RAM. The
extension RAM address register has some reserved bits, but we write the
whole thing for simplicity (as these bits default to 0).
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
the blob parameter of the function process_fdt_options has not been
invoked in the function body and should be changed to void type
Signed-off-by: Shenlin Liang <liangshenlin@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Before this was named just evm, which doesn't match the naming
of the other TI board file directory and makes it look like a
common directory for evms. Name this omap3evm.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Derald Woods <woods.technical@gmail.com>
CONFIG_SPL_TARGET should specify additional SPL make target. But
u-boot-with-spl.bin is final U-Boot binary, not SPL binary in some custom
format. Moreover u-boot-with-spl.bin is already set in CONFIG_BUILD_TARGET,
so make will build it by default.
Signed-off-by: Pali Rohár <pali@kernel.org>
Final U-Boot binary for mpc85xx boards which use SPL and are not PBL-based
based is u-boot-with-spl.bin. PBL is not used only on boards with e500v1
and e500v2 cores. Apparently CONFIG_E500 is set not only for e500 cores,
but also for all other mpc85xx cores e500mc, e5500 and e5600. So do not use
CONFIG_E500 and instead filter new cores with PBL based bootrom.
Signed-off-by: Pali Rohár <pali@kernel.org>
u-boot-with-spl.kwb is built only for SPL enabled 32-bit armada boards.
u-boot.kwb is built for 32-bit armada and kirkwood boards but only for
non-SPL targets.
So replace CONFIG_ARCH_MVEBU by CONFIG_ARMADA_32BIT (it implies
CONFIG_ARCH_MVEBU) for u-boot-with-spl.kwb.
And add additional CONFIG_ARMADA_32BIT && !CONFIG_SPL for u-boot.kwb.
Signed-off-by: Pali Rohár <pali@kernel.org>
KASLR address is needed to boot fully functional Android.
KASLR is set by primary bootloader, and since u-boot is used
as a secondary bootloader(replacing kernel) on sdm845 platform,
KASLR may be found by comparing memory chunks at relocaddr over
supposed KASLR range.
Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
It was temporary disabled due to problem with boot.
Issue was fixed in
commit f5ed6c9ccf ("uart: sdm845: Fix debug UART pinmux")
Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
In order to maintain the chain of trust, each stage of the boot process
will first authenticate each binary it loads before continuing. To
extend this to the kernal and its dtbs we can package the kernal and
its dtbs into another fitImage for Uboot to authenticate and extend the
chain of trust all the way to the kernel.
When 'boot_fit' is set, indicating we're using the secure bootflow, look
for and authenticate the kernel's fitImage.
Signed-off-by: Judith Mendez <jm@ti.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
We're currently using CONFIG_BOOTCOMMAND to run custom boot scripts to
jump into linux. While this works, let's begin the transition to more
distribution friendly jumps to linux by enabling distro_bootcmd.
Convert the custom bootcmd to a distro_bootcmd
Signed-off-by: Judith Mendez <jm@ti.com>
Signed-off-by: Bryan Brattlof <bb@ti.com>
Texas Instruments has begun enabling security settings on the SoCs it
produces to instruct ROM and TIFS to begin protecting the Security
Management Subsystem (SMS) from other binaries we load into the chip by
default.
One way ROM and TIFS do this is by enabling firewalls to protect the
OCSRAM and HSM RAM regions they're using during bootup.
The HSM RAM the wakeup SPL is in is firewalled by TIFS to protect
itself from the main domain applications. This means the 'bootindex'
value in HSM RAM, left by ROM to indicate if we're using the primary
or secondary boot-method, must be moved to OCSRAM (that TIFS has open
for us) before we make the jump to the main domain so the main domain's
bootloaders can keep access to this information.
Signed-off-by: Bryan Brattlof <bb@ti.com>
Texas Instruments has begun enabling security setting on the SoCs they
produce to instruct ROM and TIFS to begin protecting the Security
Management Subsystem (SMS) from other binaries we load into the chip by
default.
One way ROM does this is by enabling firewalls to protect the OCSRAM
region it's using during bootup. Only after TIFS has started (and had
time to disable the OCSRAM firewall region) will we have write access to
the region.
This means we will need to move the stack & heap from OCSRAM to HSM RAM
and reduce the size of BSS and the SPL to allow it to fit properly.
Signed-off-by: Bryan Brattlof <bb@ti.com>
In its current form, the am62a's wakeup SPL is fairly small, however
this will not remain as more boot modes are eventually added. To protect
us from overflowing our ~256k of HSM SRAM, add limits and check during
the wakeup SPL build.
Signed-off-by: Bryan Brattlof <bb@ti.com>
TI boards use a custom (though faily common to TI boards) mechanism for
booting Linux. We would like to use the "distroboot" approach.
Enable distroboot as a further option to use for booting on am625 should
the existing options fail.
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
The boot mode detection assumes that BOOT_DEVICE_MMC2 should always
result in MMCSD_MODE_FS, but MMCSD_MODE_RAW is also a valid option for
this port.
The current logic also avoids looking at the bootmode pin strapping,
which should be the primary means of determining whether a device is
being booted in MMCSD_MODE_EMMCBOOT mode.
Switch around the logic to check the boot mode to determine whether the
eMMC boot mode is expected or MMC/SD boot mode. From there we can look
at the boot mode config if in MMC/SD boot mode to determine whether to
attempt RAW or FS based booting.
This change allows U-Boot to also be successfully booted from RAW
offsets in addition to from a filesystem.
Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
