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15868 commits

Author SHA1 Message Date
Tom Rini
cfdae12f37 cmd_nand.c: Fix 'nand dump' after latest MTD resync
With 2a8e0fc nand_do_read_ops changed in behavior slightly (keeping in sync
with the kernel which did this change in b64d39d8) such that the OOB data is
always copied into oobbuf and never appended to datbuf.  Within U-Boot only
the nand_dump function (for the dump nand subcommand) was expecting the OOB
data to only be appended to datbuf.  So we now change nand_dump to not
malloc extra space, correct the comment about datbuf and OOB data and switch
the pointer to oobbuf before printing.

Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2012-02-28 14:04:54 -06:00
Prabhakar Kushwaha
5f720b8514 mtd/nand:Fix wrong usage of is_blank() in fsl_ifc_run_command
Freescale IFC NAND Machine calculates ECC on 512byte sector and same is used in
fsl_ifc_run_command() during ECC status verification. Also this sector is passed
to is_blank() for blank checking. It is wrong at first place because
is_blank()'s implementation checks for Page size and OOB area size.
is_blank() should be called per page for main and OOB area verification.

Variables name are redefined to avoid confusion between buffer and ecc sector.

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2012-02-28 14:03:39 -06:00
Prabhakar Kushwaha
d90361285c mtd/nand: Fix IFC driver to support 2K NAND page
1) OOB area should be updated irrespective of NAND page size. Earlier it was
updated only for 512byte NAND page.

2) During OOB update fbcr should be equal to OOB size.

Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
2012-02-28 14:03:39 -06:00
Scott Wood
fb49454b1b nand: reinstate lazy bad block scanning
commit 2a8e0fc8b3 ("nand: Merge changes
from Linux nand driver") accidentally reverted commit
13f0fd94e3 ("NAND: Scan bad blocks
lazily.").

Reinstate the change, as amended by commit
ff49ea8977 ("NAND: Mark the BBT as scanned
prior to calling scan_bbt.").

Signed-off-by: Scott Wood <scottwood@freescale.com>
2012-02-28 14:03:39 -06:00
Scott Wood
1f7b1743d3 Revert "nand: make 1-bit software ECC configurable"
This reverts commit 4fee6c2f29.

It breaks boards that currently rely on soft-ecc, as pointed out here:
http://patchwork.ozlabs.org/patch/140872/

The reverted patch should be resubmitted with documentation, and with the
CONFIG_MTD_ECC_SOFT selected from every board that needs it.  We could
start by looking at what NAND driver the board selects, and whether
that driver ever asks for soft ECC.

Signed-off-by: Scott Wood <scottwood@freescale.com>
2012-02-28 14:03:39 -06:00
Macpaul Lin
4ef806794a nds32/board.c: add PCI prompt at boot up
add PCI prompt at boot up for probing PCI device

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
2012-02-28 13:21:40 +08:00
Macpaul Lin
3998586bce nds32/ag101/watchdog.S: add linkage support
Add linkage support to watchdog.S.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
2012-02-28 13:09:23 +08:00
Macpaul Lin
184e6f7db9 nds32: add linkage support
Add linkage support.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
2012-02-28 13:09:23 +08:00
Aneesh V
f1f2c3ca9f armv7: omap3: leave outer cache enabled
Mainline kernel for OMAP3 doesn't enable L2 cache
It expects L2$ to be enabled by ROM-code/bootloader.

Leaving L2$ enabled can be troublesome in cases where
the L2 cache is not under CP15 control, such as in
Cortex-A9. This problem is explained in detail in
the commit dc7100f408

However, this problem doesn't apply to Cortex-A8
because L2$ in Cortex-A8 is under CP15 control and
hence the generic armv7 maintenance opertions work
for it.

As such we can make an exception for OMAP3 and
leave the L2$ enabled when we jump to kernel. This
is done by removing the strongly-linked implementation
of v7_outer_cache_disable() and allowing it to fall
back to the weakly linked implementation that doesn't
do anything.

Signed-off-by: Aneesh V <aneesh@ti.com>
2012-02-27 21:19:25 +01:00
Daniel Gorsulowski
c21052b994 at91: modified NAND flash timing on otc570 board
Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>
2012-02-27 21:19:25 +01:00
Daniel Gorsulowski
dd80264d07 at91: modified NAND flash timing on meesc board
Signed-off-by: Daniel Gorsulowski <Daniel.Gorsulowski@esd.eu>
2012-02-27 21:19:25 +01:00
Helmut Raiger
07c80bc232 tt01: fix hush parser config, add release config
Add PREBOOT, SILENT_CONSOLE and DEVICE_NULLDEV for release
build. Fixed bug in CONFIG_SYS_HUSH_PARSER define.

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
2012-02-27 21:19:25 +01:00
Helmut Raiger
d1300f7686 tt01: add video support
The video setup for the Epson display is provided. Addtionally
some extra info is displayed next to the Linux logo.
Make get_cpu_rev() publicly available (added to sys_proto.h).

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
2012-02-27 21:19:25 +01:00
Helmut Raiger
0b87e010f8 tt01: fix environment size
size of environment must match erasable block size in the flash.

Signed-off-by: Helmut Raiger <helmut.raiger@hale.at>
2012-02-27 21:19:25 +01:00
Troy Kisky
2bf3359ea5 i.mx6q: mx6qsabrelite: Update the network configuration
Define CONFIG_PHY_MICREL, and
minimize the tx clock delay.

There is an issue with 1000 baseTx mode on early revs
of the SabreLite boards. The center tap pin 9 of the mag RJ45
USB combo was connected to the 3.3 filtered supply. Letting
this pin float solved the problem. Symptoms of the problem
were packets with many extra zeroes tacked on the end, and random
bit flips causing a high rate of CRC errors. 10/100 baseTx worked
fine on all revs. To disable 1000 baseTx for these boards, simply
define the environment variable disable_giga. ie.

setenv disable_giga 1

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2012-02-27 21:19:25 +01:00
Troy Kisky
9fafe7dab9 net: phy: make board_phy_config responsible for calling drv->config
Boards may have things they want done before or after normal phy config.
Letting the boards call drv->config allows them more flexibilty.
Boards affected by this change are corenet_ds and mpc8544ds.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2012-02-27 21:19:25 +01:00
Troy Kisky
8682aba7da net: phy: add support for Micrel's KSZ9021
Add the gigabit phy KSZ9021.
Also, add function ksz9021_phy_extended_write
/_read for access to the phys extended registers.
The environment variable "disable_giga"
can be used to disable 1000baseTx.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2012-02-27 21:19:25 +01:00
Troy Kisky
13947f43c9 net: fec_mxc: add PHYLIB support
Surround non PHYLIB routines miiphy_restart_aneg
and miiphy_wait_aneg with ifndef CONFIG_PHYLIB.
When later PHYLIB is required it is easy to delete
the non-PHYLIB code. This separation idea
came from Andy Fleming.

fec_miiphy_read, and fec_miiphy_write changed to
fec_phy_read, and fec_phy_write with argument changes.

Deprecated miiphy_register is no longer used. Both
old and new PHYLIB code now use mdio_register.

Cleanup some debug prints.

Inline function fec_miiphy_fec_to_eth is no longer necessary.
Moved to the single call location.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
2012-02-27 21:19:24 +01:00
Troy Kisky
28774cbaac net: fec_mxc: add 1000 Mbps selection
Define FEC_QUIRK_ENET_MAC and add to
arch-mx6/imx-regs.h

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2012-02-27 21:19:24 +01:00
Linus Walleij
7c0e483d3f integrator: update the Integrator/CP config
The Integrator/CP config file was very outdated and gives a
non functional U-Boot. So:

- Set the CONFIG_ARCH_CINTEGRATOR arch flag correctly
- Add proper core module configuration options
- Skip cluttered command lista and just include
  <config_cmd_default.h>
- Kill off #if 0 network section and insert some example
  configuration that simply just boots from the network
  using TFTP if available.
- Delete flash control registers that have no business
  in this config file. These are already moved down to
  board/armltd/integrator/integrator-sc.h

Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-02-27 21:19:24 +01:00
Linus Walleij
2458716a5b integrator: rewrite the AP PCI driver
The PCI support for the Integrator AP has apparently never
been finished and I strongly suspect that it has never worked,
so let's fix it. This is a list of the more or less
un-splittable changes done in this driver rewrite:

- Replace the register definitions stashed into the config
  file (!) with a copy if the register file from the Linux
  kernels arch/arm/include/asm/hardware/pci_v3.h

- Delete the unreadable gigantic macros that perform the
  config accesses and replace them with copyedited code from
  Linux arch/arm/mach-integrator/pci_v3.c

- Rewrite the rest of the setup code to use the
  v3_[read|write][lwb]() accessors.

- Enable PCI by default in the AP board configuration.

- Fix checkpatch warnings and make code more conformant.

Tested-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-02-27 21:19:24 +01:00
Linus Walleij
4ae6a91a86 integrator: stop calling pci_init() twice
The U-Boot startup infrastructure already makes sure pci_init() is
called at a proper time, calling it again from within the board
setup code will not make things better.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-02-27 21:19:24 +01:00
Detlev Zundel
48a4ee50e4 mcx: Enable command line editing
Signed-off-by: Detlev Zundel <dzu@denx.de>
CC: Stefano Babic <sbabic@denx.de>
2012-02-27 21:19:24 +01:00
prabhakar.csengg@gmail.com
fda9c20c80 dm6467Tevm: Use a common configuration file for davinci_dm6467evm and davinci_dm6467Tevm
In commit 2d575e4685 a separate header
file was introduced for the DM6467T EVM, include/configs/davinci_dm6467Tevm.h.
The substantial difference between the davinci_dm6467evm and the
davinci_dm6467Tevm configuration is a single bit in the hardware revision
that is passed to the Linux kernel and davinci_dm6467evm has
REFCLK_FREQ = 27000000 where as davinci_dm6467Tevm.h has a
REFCLK_FREQ = 33000000.

This patch removes include/configs/davinci_dm6467Tevm.h. Instead the
include/configs/davinci_dm6467evm.h configuration is used for DM6467T EVMs and
renamed CFG_REFCLK_FREQ to CONFIG_REFCLK_FREQ and CONFIG_REFCLK_FREQ is defined
in boards.cfg.

Signed-off-by: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: Tom Rini <trini@ti.com>
2012-02-27 21:19:24 +01:00
Thomas Weber
512dce098f OMAP3: Remove unused CONFIG_SYS_NAND_ECCSTEPS/TOTAL
Signed-off-by: Thomas Weber <weber@corscience.de>
2012-02-27 21:19:24 +01:00
Thomas Weber
5605979abe Tricorder: Switch env to generic mmc driver
Because the tricorder uses the CONFIG_OMAP_HSMMC the
initialization command is mmc rescan and not mmc init.

Signed-off-by: Thomas Weber <weber@corscience.de>
Signed-off-by: Tom Rini <trini@ti.com>
2012-02-27 21:19:24 +01:00
Tom Rini
6c11dcd8c3 omap3_beagle: Change MAINTAINERS entry
Cc: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: Tom Rini <trini@ti.com>
Acked-by: Dirk Behme<dirk.behme@gmail.com>
2012-02-27 21:19:24 +01:00
Tom Rini
fd7962e2c4 am335x_evm: Change MAINTAINERS entry
Signed-off-by: Tom Rini <trini@ti.com>
2012-02-27 21:19:24 +01:00
Chase Maupin
0e35bde7b1 am33xx: ddr_defs.h: Change DDR timings
* For cold silicon the DDR timings need to be relaxed in order for
  the device to boot with DDR at 266MHz
* Fix proposed by James Doublesin

Signed-off-by: Chase Maupin <Chase.Maupin@ti.com>
2012-02-27 21:19:24 +01:00
Hadli, Manjunath
206a1038f7 da850evm: read mac address from I2C EEPROM on AM18x EVM
add support to read mac address for AM18x EVM manufactured from
Spectrum digital which have mac address stored in I2C EEPROM manufactured
by WINBOND. This patch reads mac address from I2C EEPROM and sets the
environment variable if not set, If mac address is already present in
environment compare it with the mac address in EEPROM and warn on
mismatch.Introduced a config option CONFIG_MAC_ADDR_IN_EEPROM to where
to look for the mac address.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Cc: Tom Rini <trini@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Wolfgang Denk <wd@denx.de>
2012-02-27 21:19:24 +01:00
Hadli, Manjunath
38fed6ee95 da850evm: add support to read mac address from SPI flash
add support to read mac address for da850/L138 evm manufactured by
Logic PD which store mac address in SPI flash manufactured by ST
Microelectronics. This patch adds support to read mac address from
SPI flash and set the mac address if it hasn't been set in environment,
If it has been set in the environment it compares the value one with
SPI flash and warns on mismatch. Introduced a config option
CONFIG_MAC_ADDR_IN_SPIFLASH indicating where to look mac address for.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Cc: Tom Rini <trini@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Wolfgang Denk <wd@denx.de>
2012-02-27 21:19:24 +01:00
Peter Meerwald
4258aa62fb beagle: enable DVI_PUP
this patch addresses the issue that there is no DVI output on beagleboard-xm in
u-boot; the TFP410 is not powered on, DVI_PUP needs to be set high

this is done differently on beagleboard-xm rev. B/C versus earlier boards:
beagleboard-xm B/C need to set GPIO2 of the TWL4030
earlier boards need to set GPIO170

note that the change occured somewhere inbetween beagleboard-xm rev. A2 and A3

note that beagleboard-xm rev. A and rev. B cannot be distinguished using
get_board_revision(), REVISION_XM_A/REVISION_XM_B is bogus

due to this glitch, the patch cannot work correctly on some beagleboard-xm
rev A/B boards

tested on beagleboard-xm rev. C (you should see orange color on a monitor)

note that the framebuffer is NOT yet set up, this could be done along the
lines below (for 800x480 resolution and RGB24) before calling omap3_dss_enable()

static void configure_frame_buffer() {
	writel(0x80500000, (uint *) 0x48050480); // address
	writel(0x80500000, (uint *) 0x48050484);
	writel(0x01df031f, (uint *) 0x4805048c); // size
	writel(0x00000091, (uint *) 0x480504a0); // RGB24
}

Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
2012-02-27 21:19:24 +01:00
Hadli, Manjunath
826e99136e davinci: cleanup davinci_sync_env_enetaddr() fucntion
check for the return status for eth_getenv_enetaddr_by_index()
and eth_setenv_enetaddr() functions and print appropriate message
on failure.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Cc: Tom Rini <trini@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
2012-02-27 21:19:24 +01:00
Shawn Guo
fa34f6b25b common/image.c: align usage of fdt_high with initrd_high
The commit message of a28afca (Add uboot "fdt_high" enviroment variable)
states that fdt_high behaves similarly to the existing initrd_high.
But fdt_high actually has an outstanding difference from initrd_high.
The former specifies the start address, while the later specifies the
end address.

As fdt_high and initrd_high will likely be used together, it'd be nice
to have them behave same.  The patch changes the behavior of fdt_high
to have it aligned with initrd_high.

The document of fdt_high in README is updated with an example to
demonstrate the usage of this environment variable.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Simon Glass <sjg@chromium.org>
2012-02-27 21:19:24 +01:00
Fabio Estevam
ba901df41b mx35pdk: Remove duplicate CPU revision and reset cause information
MX35PDK board does not need to print CPU revision and reset cause in board file
because this is printed by common code when CONFIG_DISPLAY_CPUINFO is selected

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-02-27 21:19:24 +01:00
Fabio Estevam
ec0919f54b mx35: generic: Let get_reset_cause be defined only when CONFIG_DISPLAY_CPUINFO is selected
get_reset_cause() function is only used inside print_cpuinfo(), so let it be
defined only when CONFIG_DISPLAY_CPUINFO is selected.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-02-27 21:19:24 +01:00
Fabio Estevam
ed9d21696d mx51evk: Use gpio_direction_input prior to gpio_get_value
Use gpio_direction_input prior to gpio_get_value.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-02-27 21:19:24 +01:00
Fabio Estevam
c9d5fd1602 mx53smd: Use gpio_direction_input prior to gpio_get_value
Use gpio_direction_input prior to gpio_get_value.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-02-27 21:19:24 +01:00
Fabio Estevam
7d1267d623 mx53evk: Use gpio_direction_input prior to gpio_get_value
Use gpio_direction_input prior to gpio_get_value.

Cc: Jason Liu <r64343@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Jason Liu <r64343@freescale.com>
2012-02-27 21:19:24 +01:00
Fabio Estevam
93082044a9 mx53ard: Use gpio_direction_input prior to gpio_get_value
Use gpio_direction_input prior to gpio_get_value.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
2012-02-27 21:19:23 +01:00
Fabio Estevam
a091be766d mx53loco: Use gpio_direction_input prior to gpio_get_value
Use gpio_direction_input prior to gpio_get_value.

Cc: Jason Liu <r64343@freescale.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <r64343@freescale.com>
2012-02-27 21:19:23 +01:00
Eric Nelson
913b321a1e mx6q: mx6qsabrelite: Conditionally define macros for environment in serial flash
The default settings store the persistent environment on SD card
and not serial flash (SPI NOR).

To use SPI NOR to save the environment instead of SD card, edit
include/configs/mx6qsabrelite.h and

- undefine CONFIG_ENV_IS_IN_MMC
- define   CONFIG_ENV_IS_IN_SPI_FLASH

The SPI driver can take as chip select the controller's chip selects
as well as an external GPIO. The LSB byte has the value of the internal
chip select, the highest (thought as 16-bit value) contains the GPIO
number.

The GPIO used on Sabre Lite is GP3:19 == 83.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Jason Liu <jason.hui@linaro.org>
Tested-by: Jason Liu <jason.hui@linaro.org>
2012-02-27 21:19:23 +01:00
Eric Nelson
ba54b9276a mx6q: mx6qsabrelite: Provide default serial flash bus and chip-select
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>
Tested-by: Jason Liu <jason.hui@linaro.org>
2012-02-27 21:19:23 +01:00
Eric Nelson
373a1d8c0e mx6q: mx6qsabrelite: Add ECSPI support to the Sabrelite platform
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>
Tested-by: Jason Liu <jason.hui@linaro.org>
2012-02-27 21:19:23 +01:00
Eric Nelson
d5c37c9cc4 mx6q: Add support for ECSPI through mxc_spi driver
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>
2012-02-27 21:19:23 +01:00
Eric Nelson
08c61a589b mxc_spi: move machine specifics into CPU headers
Move (E)CSPI register declarations into the imx-regs.h files for each supported CPU

Introduce two new macros to control conditional setup
     MXC_CSPI - Used for processors with the Configurable Serial Peripheral Interface (MX3x)
     MXC_ECSPI - For processors with Enhanced Configurable... (MX5x, MX6x)

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Acked-by: Stefano Babic <sbabic@denx.de>
Acked-by: Jason Liu <jason.hui@linaro.org>
Tested-by: Jason Liu <jason.hui@linaro.org>
2012-02-27 21:19:23 +01:00
Eric Nelson
4b3a30e9ae mx6q: define GPIO macros for translating between ordinals and port:index
The interface to the mxc_gpio driver uses integer (ordinal) values to
refer to all GPIOs on the i.MX processors. The registers themselves
and much of the i.MX documentation are banked in groups of 32, and these
macros allow the use of the port:index numbering for clarity.

GPIO_NUMBER() converts to ordinal value from port:index
GPIO_PORT() returns the port of an ordinal value
GPIO_INDEX() returns the index or offset of the ordinal.

Discussion on the mailing list at
	http://lists.denx.de/pipermail/u-boot/2012-January/116927.html

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
2012-02-27 21:19:23 +01:00
Stefano Babic
63b1e004f5 MX27: add missing get_tbclk()
Signed-off-by: Stefano Babic <sbabic@denx.de>
2012-02-27 21:19:23 +01:00
Marek Vasut
ff250f3ed8 MX28: Fix get_timer() / get_tbclk() issue
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
2012-02-27 21:19:23 +01:00
Matthias Fuchs
61698fd563 mx28: fix SPL code to make USB booting work
This patch fixes booting i.MX28 CPUs via USB download.
In this mode the CPU's bootrom implements a USB HID device that
accepts a bootstream.

When downloading the bootstream via USB, first the SPL code is
received and executed. Then the u-boot image is received and
called.

The USB bootmode is interrupt driven.

This patch fixes two things:

1) The ARM's fast interrupt mode is disabled when the SPL code
has been run. So save and restore the CPSR register.

2) Save and restore c1 control register: the exception vector
location needs to be set back to bootrom space to make the USB
interrupts work again. The SPL code needs to change this
option for the ram size probing.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
2012-02-27 21:19:23 +01:00