Commit graph

39474 commits

Author SHA1 Message Date
Simon Glass
dc396210d9 x86: Mention how to boot a 64-bit kernel from U-Boot
The README indicates that this is not supported, but this is no-longer true.
Update the text to indicate this and describe the FIT changes required.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-16 11:44:09 +08:00
Stefan Roese
5d98c5ec8e x86: doc: Add note about the debug FSP usage on BayTrail
The debug FSP image is bigger in size than the normal FSP image. This
patch adds a small description on how to use this FSP debug version
by changing CONFIG_FSP_ADDR.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-16 11:44:09 +08:00
Stefan Roese
f55137fd74 x86: conga-qeval20-qa3: Add missing MAINTERNERS entry
Add entry for the missing internal UART defconfig to the MAINTAINERS
file.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
CC: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-16 11:44:09 +08:00
Jaehoon Chung
177381a9f9 mmc: mmc_legacy: fix the compiler error with disabled CONFIG_DM_MMC_OPS
To prevent the compiler error, split the checking condition whether
cfg->ops is NULL or not.
It's more clearly, because it's not included in mmc_config structure
when CONFIG_DM_MMC_OPS is disabled.

drivers/mmc/mmc_legacy.c: In function ‘mmc_create’:
drivers/mmc/mmc_legacy.c:118:31: error: ‘const struct mmc_config’ has no member named ‘ops’
drivers/mmc/mmc_legacy.c:118:58: error: ‘const struct mmc_config’ has no member named ‘ops’
make[1]: *** [drivers/mmc/mmc_legacy.o] Error 1

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-16 10:27:24 +09:00
Yangbo Lu
d188b11302 mmc: send CMD0 before CMD1 for some MMC cards
When the MMC framework was added in u-boot, the mmc_go_idle was
added before mmc_send_op_cond_iter in function mmc_send_op_cond
annotating that some cards seemed to need this. Actually, we still
need to do this in function mmc_complete_op_cond for those cards.
This has been verified on Micron MTFC4GACAECN eMMC chip.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
2016-08-16 10:27:07 +09:00
Sekhar Nori
ba92cd74d2 defconfig: k2g_evm_defconfig: Enable mmc driver model
K2G can benefit from driver model support in the
MMC/SD driver it uses: omap_hsmmc

Enable driver model MMC support for K2G.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-16 10:24:11 +09:00
Sekhar Nori
ce52531c5d ARM: dts: k2g-evm: enable mmc/sd suppport
The K2G EVM from TI has an SD card slot as
well as onboard eMMC for data storage.

Enable support for these.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-16 10:24:11 +09:00
Sekhar Nori
5396edc675 ARM: dts: K2G: Add support for MMC controller
K2G SoC from TI has two MMC/SD controllers.
Add device tree data for these.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-16 10:24:10 +09:00
Sekhar Nori
4de2de5149 drivers: mmc: omap_hsmmc: fix build breakage
structure member 'cd_inverted' of omap_hsmmc_data
is available only when OMAP_HSMMC_USE_GPIO is
defined.

When CONFIG_DM_MMC is defined, but not
CONFIG_OMAP_GPIO, this will cause build breakage
in omap_hsmmc driver of the sort:

  CC      drivers/mmc/omap_hsmmc.o
../drivers/mmc/omap_hsmmc.c: In function 'omap_hsmmc_ofdata_to_platdata':
../drivers/mmc/omap_hsmmc.c:1763:6: error: 'struct omap_hsmmc_data' has no member named 'cd_inverted'
  priv->cd_inverted = fdtdec_get_bool(fdt, node, "cd-inverted");
      ^

Fix this by accessing cd_inverted only when
OMAP_HSMMC_USE_GPIO is defined.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-16 10:24:10 +09:00
Tom Rini
4cc9699be7 common: env_nand: Ensure that we have nand_info[0] prior to use
Now that nand_info[] is an array of pointers we need to ensure that it's
been populated prior to use.  We may for example have ENV in NAND set in
configurations that run on boards with and without NAND (where default
env is fine enough, such as omap3_beagle and beagleboard (NAND) vs
beagle xM (no NAND)).

Fixes: b616d9b0a7 ("nand: Embed mtd_info in struct nand_chip")
Cc: Scott Wood <oss@buserror.net>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Scott Wood <oss@buserror.net>
2016-08-15 18:46:41 -04:00
Andreas Fenkart
183923d3e4 tools/env: ensure environment starts at erase block boundary
56086921 added support for unaligned environments access.
U-boot itself does not support this:
- env_nand.c fails when using an unaligned offset. It produces an
  error in nand_erase_opts{drivers/mtd/nand/nand_util.c}
- in env_sf/env_flash the unused space at the end is preserved, but
  not in the beginning. block alignment is assumed
- env_sata/env_mmc aligns offset/length to the block size of the
  underlying device. data is silently redirected to the beginning of
  a block

There is seems no use case for unaligned environment. If there is
some useful data at the beginning of the the block (e.g. end of u-boot)
that would be very unsafe. If the redundant environments are hosted by
the same erase block then that invalidates the idea of double buffering.
It might be that unaligned access was allowed in the past, and that
people with legacy u-boot are trapped. But at the time of 56086921
it wasn't supported and due to reasons above I guess it was never
introduced.
I prefer to remove that (unused) feature in favor of simplicity

Signed-off-by: Andreas Fenkart <andreas.fenkart@digitalstrom.com>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
2016-08-15 18:46:40 -04:00
Chris Zankel
7e270ec3af xtensa: add support for the 'xtfpga' evaluation board
The 'xtfpga' board is actually a set of FPGA evaluation boards that
can be configured to run an Xtensa processor.

 - Avnet Xilinx LX60
 - Avnet Xilinx LX110
 - Avnet Xilinx LX200
 - Xilinx ML605
 - Xilinx KC705

These boards share the same components (open-ethernet, ns16550 serial,
lcd display, flash, etc.).

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-15 18:46:40 -04:00
Max Filippov
28b48a0710 xtensa: add core information for the de212 processor
DE212 is a general purpose xtensa processor without full MMU.
Core information files are autogenerated from the processor description
and are not meant to be edited.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-15 18:46:40 -04:00
Max Filippov
2d2811c230 xtensa: add core information for the dc233c processor
DC233C is an xtensa processor with full MMUv3 capable of running Linux.
Core information files are autogenerated from the processor description
and are not meant to be edited.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-15 18:46:39 -04:00
Chris Zankel
da188a0388 xtensa: add core information for the dc232b processor
DC232B is an xtensa processor with full MMUv2 capable of running Linux.
Core information files are autogenerated from the processor description
and are not meant to be edited.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-15 18:46:39 -04:00
Chris Zankel
c978b52410 xtensa: add support for the xtensa processor architecture [2/2]
The Xtensa processor architecture is a configurable, extensible,
and synthesizable 32-bit RISC processor core provided by Tensilica, inc.

This is the second part of the basic architecture port, adding the
'arch/xtensa' directory and a readme file.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-15 18:46:38 -04:00
Chris Zankel
de5e5cea02 xtensa: add support for the xtensa processor architecture [1/2]
The Xtensa processor architecture is a configurable, extensible,
and synthesizable 32-bit RISC processor core provided by Cadence.

This is the first part of the basic architecture port with changes to
common files. The 'arch/xtensa' directory, and boards and additional
drivers will be in separate commits.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-08-15 18:46:38 -04:00
Jon Medhurst \(Tixy\)
f225d39d30 vexpress: Check TC2 firmware support before defaulting to nonsec booting
The firmware on TC2 needs to be configured appropriately before booting
in nonsec mode will work as expected, so test for this and fall back to
sec mode if required.

Signed-off-by: Jon Medhurst <tixy@linaro.org>
Reviewed-by: Ryan Harkin <ryan.harkin@linaro.org>
Tested-by: Ryan Harkin <ryan.harkin@linaro.org>
2016-08-15 18:46:38 -04:00
Tom Rini
0fcb9f07a1 Merge branch 'master' of git://git.denx.de/u-boot-atmel 2016-08-15 17:31:23 -04:00
Wenyou Yang
a0d0d86f5c mmc: atmel_sdhci: Convert to the driver model support
Convert the driver to the driver model while retaining the existing
legacy code. This allows the driver to support boards that have
converted to driver model as well as those that have not.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2016-08-15 22:58:05 +02:00
Wenyou Yang
17b68b5a58 dm: atmel: Add driver model support for the ehci driver
Add driver model support while retaining the existing legacy code.
This allows the driver to support boards that have converted to
driver model as well as those that have not.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-08-15 22:58:04 +02:00
Wenyou Yang
2c4b2dd289 ARM: at91/dt: Add device tree for SAMA5D2 Xplained
Add device tree for SAMA5D2 Xplained board.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
2016-08-15 22:58:04 +02:00
Wenyou Yang
256a3f2466 atmel: Bring in at91 pio4 device tree file and bindings
Bring in required device tree file and bindings from Linux.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-15 22:58:04 +02:00
Wenyou Yang
ac72e174f9 pinctrl: at91-pio4: Add pinctrl driver
AT91 PIO4 controller is a combined gpio-controller, pin-mux and
pin-config module. The peripheral's pins are assigned through
per-pin based muxing logic.

The pin configuration is performed on specific registers which
are shared along with the gpio controller. So regard the pinctrl
device as a child of atmel_pio4 device.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2016-08-15 22:58:03 +02:00
Wenyou Yang
ee3311db1c gpio: atmel_pio4: Rework to support DM & DT
Rework the driver to support driver model and device tree, and
support to regard the pio4 pinctrl device as a child of
atmel_pio4 device.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-15 22:58:03 +02:00
Wenyou Yang
46ed9381b7 gpio: atmel_pio4: Move PIO4 definitions to head file
In order to make these PIO4 definitions shared with AT91 PIO4
pinctrl driver, move them from the existing gpio driver to the
head file, and rephrase them.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-15 22:58:03 +02:00
Andreas Bießmann
d51e9a1d04 clk.h: inline clk_get_by_name()
Fix compile warning for non OF_CONTROL builds:

---8<---
In file included from /Volumes/devel/u-boot/drivers/gpio/atmel_pio4.c:10:0:
/Volumes/devel/u-boot/include/clk.h:107:12: warning: 'clk_get_by_name' defined but not used [-Wunused-function]
--->8---

Signed-off-by: Andreas Bießmann <andreas@biessmann.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
2016-08-15 22:58:03 +02:00
Tom Rini
2ef98d3316 Merge branch 'master' of git://git.denx.de/u-boot-net 2016-08-15 16:38:39 -04:00
Joe Hershberger
cc2593128f net: mii: Clean up legacy glue that is not used
The cleanup of the legacy mii registration API that's no longer used now
that the drivers have been converted to use the (more) modern API.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-15 15:29:04 -05:00
Joe Hershberger
dfcc496ed7 net: mii: Changes not made by spatch
If the functions passed to the registration function are not in the same
C file (extern) then spatch will not handle the dependent changes.

Make those changes manually.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

For the 4xx related files:
Acked-by: Stefan Roese <sr@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-15 15:29:03 -05:00
Joe Hershberger
875e0bc68a net: mii: Fix changes made by spatch
Some of the changes were a bit too complex.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-15 15:29:03 -05:00
Joe Hershberger
5a49f17481 net: mii: Use spatch to update miiphy_register
Run scripts/coccinelle/net/mdio_register.cocci on the U-Boot code base.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-08-15 15:26:33 -05:00
Joe Hershberger
63d985985e scripts: Add a cocci patch for miiphy_register
Many Ethernet drivers still use the legacy miiphy API to register their
mdio interface for access to the mdio commands.

This semantic patch will convert the drivers from the legacy adapter API
to the more modern alloc/register API.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 15:26:23 -05:00
Wenyou Yang
9e5935c04e clk: at91: Add clock driver
The patch is referred to at91 clock driver of Linux, to make
the clock node descriptions in DT aligned with the Linux's.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-08-15 22:12:00 +02:00
mario.six@gdsys.cc
03dcd410d7 tpm: atmel_twi: Make compatible with DM I2C busses
Commit 302c5db ("dm: tpm: Add Driver Model support for tpm_atmel_twi
driver") converted the Atmel TWI TPM driver itself to driver model, but
kept the legacy-style i2c_write/i2c_read calls.

Commit 3e7d940 ("dm: tpm: Every TPM drivers should depends on DM_TPM")
then made DM_I2C a dependency of the driver, effectively forcing users
to turn on CONFIG_DM_I2C_COMPAT to get it to work.

This patch adds the necessary dm_i2c_write/dm_i2c_read calls to make the
driver compatible with DM, but also keeps the legacy calls in ifdefs, so
that the driver is now compatible with both DM and non-DM setups.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2016-08-15 22:12:00 +02:00
Songjun Wu
e3b7599be7 i2c: atmel: DT binding for i2c driver
DT binding documentation for atmel i2c driver.

Signed-off-by: Songjun Wu <songjun.wu@atmel.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2016-08-15 22:12:00 +02:00
Songjun Wu
8800e0fa20 i2c: atmel: add i2c driver
Add i2c driver.

Signed-off-by: Songjun Wu <songjun.wu@atmel.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
2016-08-15 22:12:00 +02:00
Max Filippov
0d0779c141 net/ethoc: implement MDIO bus and support phylib
Implement MDIO bus read/write functions, initialize the bus and scan for
the PHY when phylib is enabled. Limit PHY speeds to 10/100 Mbps.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:49 -05:00
Max Filippov
59b7dfa0d1 net/ethoc: support private memory configurations
The ethoc device can be configured to have a private memory region
instead of having access to the main memory. In that case egress packets
must be copied into that memory for transmission and pointers to that
memory need to be passed to net_process_received_packet or returned from
the recv callback.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:48 -05:00
Max Filippov
02a888b567 net/ethoc: don't mix virtual and physical addresses
Addresses used in buffer descriptors and passed in platform data or
device tree are physical. Addresses used by CPU to access packet data
and registers are virtual. Don't mix these addresses and use virt_to_phys
for translation.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:48 -05:00
Max Filippov
2de18c8d77 net/ethoc: support device tree
Add .of_match table and .ofdata_to_platdata callback to allow for ethoc
device configuration from the device tree.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:47 -05:00
Max Filippov
5d43feabf3 net/ethoc: add CONFIG_DM_ETH support
Extract reusable parts from ethoc_init, ethoc_set_mac_address,
ethoc_send and ethoc_receive, move the rest under #ifdef CONFIG_DM_ETH.
Add U_BOOT_DRIVER, eth_ops structure and implement required methods.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:47 -05:00
Max Filippov
a84a757ae7 net/ethoc: use priv instead of dev internally
Don't use physical base address of registers directly, ioremap it first.
Save pointer in private struct ethoc and use that struct in all internal
functions.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:46 -05:00
Max Filippov
f0727120a7 net/ethoc: add Kconfig entry for the driver
Add Kconfig entry for the driver, remove #define CONFIG_ETHOC from the
only board configuration that uses it and put it into that board's
defconfig.

Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:46 -05:00
Alban Bedel
eb4e8ceb47 net: e1000: Fix the build with driver model and SPI EEPROM
When adding support for the driver model the SPI EEPROM feature had
been ignored. Fix the build with both CONFIG_DM_ETH and
CONFIG_E1000_SPI enabled.

Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:45 -05:00
Chris Packham
70f1463686 net: smsc95xx: Use correct get_unaligned functions
The __get_unaligned_le* functions may not be declared on all platforms.
Instead, get_unaligned_le* should be used. On many platforms both of
these are the same function.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:45 -05:00
Wenyou Yang
a212b66d7c net: macb: Fix build error for CONFIG_DM_ETH enabled
Use the right phy_connect() prototype for CONFIGF_DM_ETH.
Support to get the phy interface from dt and set GMAC_UR.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-08-15 13:34:44 -05:00
Bibek Basu
b064c9124a ARM: tegra: set vdd_core for Jetson TK1
Program vdd_core for Jetson TK1 to 1V, which is the max safe voltage for
ultra low temperature operations. vdd_cpu and vdd_gpu are already at 1V.

Signed-off-by: Bibek Basu <bbasu@nvidia.com>
(swarren: fixed comments to better match the code)
(swarren: moved board ifdef around data in header, made code generic)
(swarren: fixed typos in commit description)
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-08-15 10:26:14 -07:00
Bryan Wu
027638d3cf ARM: tegra: reduce CSITE clock from 204M to 136M
The L4T kernel complains about a CSITE clock rate above 144MHz, presumably
because the HW is only characterized for a clock less than that. Adjust the
rate to 136MHz to avoid the warning and stay in spec.

Signed-off-by: Bryan Wu <pengw@nvidia.com>
(swarren, re-wrote commit description)
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-08-15 10:26:14 -07:00
Stephen Warren
06264a79b4 ARM: tegra: fix trimslice environment location
Trimslice currently stores its environment at 512KiB into the SPI flash
chip. The U-Boot binary has grown such that the size of the boot image
(which includes the Tegra BCT, padding, and the U-Boot binary) is slightly
larger than 512K now. Consequently, writing the boot image to flash
corrupts the saved environment, and equally, writing to or erasing the
environment will corrupt the bootloader, which in turn will cause the
Tegra boot ROM to enter recovery mode during boot, making it look as if
the system is non-operational. Note that tegra-uboot-flasher writes to
the environment during the flashing process.

Solve this by moving the environment as high as possible in flash. This
will allow the U-Boot binary to roughly double in size before this problem
is hit again, at which point there's nothing we can do anyway since the
binary won't fit into flash.

99% of other Tegra boards store the environment in eMMC and use a negative
value for CONFIG_ENV_OFFSET, which already automatically places the
environment as near the end of boot flash as possible. The 1 remaining
board hard-codes CONFIG_ENV_OFFSET to 2MiB, which allows for plenty more
bloat.

Reported-by: Stephen L Arnold <nerdboy@gentoo.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2016-08-15 10:26:14 -07:00