Commit graph

3504 commits

Author SHA1 Message Date
Jagan Teki
f39eb75b22 common: Add CMD_SF Kconfig entry
Added Kconfig entry for CMD_SF.

Signed-off-by: Jagan Teki <jteki@openedev.com>
2015-07-01 21:15:04 +05:30
Heiko Schocher
8ee81b7f9b mtd, spi: Check if flash pointer is used
If flash pointer is used free it, before probing a new
flash and storing it in flash.

Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Jagannadh Teki <jteki@openedev.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
2015-06-30 00:40:11 +05:30
Heiko Schocher
2ec1a4059c spi, sf: Use offset and size in sf cmd from mtdpartition
With this patch, it is possible to get the offset and size information
from the mtdpartiton setting in "mtdparts", similiar to the
"nand" commandos.

=> sf
sf - SPI flash sub-system

Usage:
sf probe [[bus:]cs] [hz] [mode] - init flash device on given SPI bus
                                  and chip select
sf read addr offset|partition len       - read `len' bytes starting at
                                          `offset' to memory at `addr'
sf write addr offset|partition len      - write `len' bytes from memory
                                          at `addr' to flash at `offset'
sf erase offset|partition [+]len        - erase `len' bytes from `offset'
                                          `+len' round up `len' to block size
sf update addr offset|partition len     - erase and write `len' bytes from memory
                                          at `addr' to flash at `offset'
=>
for example "env" is defined in mtdparts:

=> sf read 13000000 env
device 0 offset 0xd0000, size 0x10000
SF: 65536 bytes @ 0xd0000 Read: OK

zynq-uboot> mtdparts add nor0 0x10000@0x0 env
zynq-uboot> sf erase env 0x10000
SF: 65536 bytes @ 0x0 Erased: OK

zynq-uboot> sf write 0x100 env
device 0 offset 0x0, size 0x10000
SF: 65536 bytes @ 0x0 Written: OK

zynq-uboot> sf read 0x40000 env
device 0 offset 0x0, size 0x10000
SF: 65536 bytes @ 0x0 Read: OK

Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Jagannadh Teki <jteki@openedev.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
2015-06-30 00:40:11 +05:30
Heiko Schocher
09c3280754 mtd, nand: Move common functions from cmd_nand.c to common place
Move common functions from cmd_nand.c (for calculating offset
and size from cmdline paramter) to common place, so they could
used from other commands which use mtd partitions.

For onenand the arg_off_size() is left in common/cmd_onenand.c.
It should use now the common arg_off() function, but as I could
not test onenand I let it there ...

Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
2015-06-30 00:40:11 +05:30
Daniel Schwierzeck
9fe6d8716e mtd, spi: Add MTD layer driver
Add MTD layer driver for spi, original patch from:
http://git.denx.de/?p=u-boot/u-boot-mips.git;a=commitdiff;h=bb246819cdc90493dd7089eaa51b9e639765cced

Changes from Heiko Schocher against this patch:
- Remove compile error if not defining CONFIG_SPI_FLASH_MTD:

  LD      drivers/mtd/spi/built-in.o
drivers/mtd/spi/sf_probe.o: In function `spi_flash_mtd_unregister':
/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister'
drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here
drivers/mtd/spi/sf_ops.o: In function `spi_flash_mtd_unregister':
/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister'
drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here
make[1]: *** [drivers/mtd/spi/built-in.o] Fehler 1
make: *** [drivers/mtd/spi] Fehler 2

- Add a README entry.
- Add correct writebufsize, to fit with Linux v3.14
  MTD, UBI/UBIFS sync.

Note (From Jagan): For testing raw mtd parition erase/read/write operations
using cmd_sf, sf_mtd should be required to register the spi flash device to
MTD layer but the sf_mtd_info ops were not required until and unless if we
use any flash filesystem layer say for example UBI. Due to this the foot-print
got increased ~290bytes in non-UBI case here that should be acceptible.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Tested-by: Jagannadh Teki <jteki@openedev.com>
Reviewed-by: Jagannadh Teki <jteki@openedev.com>
2015-06-30 00:40:11 +05:30
Joe Hershberger
ef0f2f5752 Move defaults from config_cmd_default.h to Kconfig
This sets the default commands Kconfig to match
include/config_cmd_default.h commands in the common/Kconfig and removes
them from include/configs.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
[trini: rastaban, am43xx_evm_usbhost_boot, am43xx_evm_ethboot updates]
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-06-25 22:18:34 -04:00
Joe Hershberger
6aab5ae921 common: Add the CMD_ENV_EXISTS config to Kconfig
This command needs to exist in the Kconfig so that it can be moved from
the config_cmd_default.h.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-06-25 17:04:51 -04:00
Joe Hershberger
f38bec9f15 common: Fix comment for saveenv in Kconfig
The help for this was simply copied from another command.

Update it to reflect the command.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-06-25 17:04:47 -04:00
Tom Rini
325849ff3d Merge git://git.denx.de/u-boot-usb 2015-06-19 16:46:51 -04:00
Paul Kocialkowski
8607c4f127 common: cmd_part: start and size sub-commands introduction
This introduces the part start and part size sub-commands. The purpose of these
is to store the start block and size of a partition in a variable, given the
device and partition number.

This allows reading raw data that fits a single partition more easily.
For instance, this could be used to figure out the start block and size of a
kernel partition when a partition table is present, given the partition number.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Acked-by: Stephen Warren <swarren@nvidia.com>
[trini: Change "%lx" to LBAF]
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-06-19 16:46:47 -04:00
Paul Kocialkowski
a78f78ebeb common: cmd_part: Proper alignment
This fixes a misaligned declaration.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
2015-06-19 16:46:47 -04:00
Hans de Goede
de451493f1 usb: kbd: Disable idle input reports when we do not need them
When we're polling and thus handling key-repeat in software, make sure
to disable idle reports, some keyboards may have these enabled by default
messing up our software keyrepeat.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-06-19 14:33:29 +02:00
Paul Kocialkowski
3ae8f4c8ae spl: spl_mmc: MMC boot mode provisions checks
This allows using only one of either raw or fs mode for SPL mmc boot, without
the need to have provisions for the other. In particular, a device may have
U-Boot installed on a file system on the mmc, without ever needing to read
U-Boot from raw memory. Thus, there is no reason to provide a sector or
partition for raw mode. This allows this behaviour and still provides a robust
fallback mechanism in case provisions for both modes are defined.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
2015-06-18 16:11:42 -04:00
Paul Kocialkowski
1ec264695f spl: spl_mmc: Minor cosmetics
This switches some printf calls to puts and avoids a test repetition.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
2015-06-18 16:11:42 -04:00
Mark Langsdorf
2b42c9317d ahci: support LBA48 data reads for 2+TB drives
Enable full 48-bit LBA48 data reads by passing the upper word of the
LBA block pointer in bytes 9 and 10 of the FIS.

This allows uboot to load data from any arbitrary sector on a drive
with 2 or more TB of available data connected to an AHCI controller.

Signed-off-by: Mark Langsdorf <mark.langsdorf@gmail.com>
Signed-off-by: Andre Przywara <osp@andrep.de>
[trini: Make use of CONFIG_SYS_64BIT_LBA in a few places to drop
 warnings on platforms that don't enable that feature ]
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-06-12 16:52:32 -04:00
Mark Langsdorf
35df893199 cmd_scsi: use lbaint_t for LBA values instead of u32
Signed-off-by: Mark Langsdorf <mark.langsdorf@gmail.com>
Signed-off-by: Andre Przywara <osp@andrep.de>
2015-06-12 13:02:07 -04:00
Tom Rini
b9130d88fa Merge git://git.denx.de/u-boot-dm 2015-06-11 21:18:52 -04:00
Hannes Schmelzer
7bb7d672aa common/cmd_bdinfo: show gd->board_type
sometimes it is usefull to know if board-detection has
written the correct value into gd->board_type.

For this we add some output to the bdinfo command.

Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
2015-06-11 08:29:14 -04:00
Simon Glass
b6bfb6ff9a Add a simple version of memalign()
This is used when the full malloc() is not available.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-06-10 19:26:55 -06:00
Simon Glass
8d379f179a lcd: Support colour lookup table on 16bpp display in BMP images
For 16-bit-per-pixel displays it is useful to support 8 bit-per-pixel
images to reduce image size. Add support for this when drawing BMP images.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-06-10 19:26:55 -06:00
Simon Glass
1c3dbe56f7 Remove typedefs from bmp_layout.h
We try to avoid typedefs and these ones are easy enough to remove. Before
changing this header in the next patch, remove the typedefs.

Signed-off-by: Simon Glass <sjg@chromium.org>
Suggested-by: Joe Hershberger <joe.hershberger@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2015-06-10 19:26:54 -06:00
Stefan Roese
8f0b1e24e2 autoboot.c: Add feature to stop autobooting via SHA256 encrypted password
This patch adds the feature to only stop the autobooting, and therefor
boot into the U-Boot prompt, when the input string / password matches
a values that is encypted via a SHA256 hash and saved in the environment.

This feature is enabled by defined these config options:
     CONFIG_AUTOBOOT_KEYED
     CONFIG_AUTOBOOT_STOP_STR_SHA256

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-06-08 17:32:40 -04:00
Stefan Roese
d126e01649 autoboot.c: Move config options to Kconfig
This patch moves the following config options to Kconfig:

CONFIG_AUTOBOOT_KEYED
CONFIG_AUTOBOOT_PROMPT
CONFIG_AUTOBOOT_DELAY_STR
CONFIG_AUTOBOOT_STOP_STR
AUTOBOOT_KEYED_CTRLC

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Drop ip04 and pm9263 configs/ additions, those boards previously
 set CONFIG_AUTOBOOT_PROMPT but never used it, re-run savedefconfig over
 all boards that did change. Make digsy_mtc_* string include seconds to
 match others and not warn. ]
Signed-off-by: Tom Rini <trini@konsulko.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-06-08 17:32:16 -04:00
Stefan Roese
2d908fa084 autoboot.c: Remove CONFIG_AUTOBOOT_STOP_STR2 and CONFIG_AUTOBOOT_DELAY_STR2
These defines for a 2nd autoboot stop and delay string are nearly unused. Only
sc3 defines CONFIG_AUTOBOOT_DELAY_STR2. And a patch to remove this most likely
unmaintained board is also posted to the list.

By removing these defines the code will become cleaner and moving the remaining
compile options to Kconfig will get easier.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
2015-06-08 10:45:11 -04:00
Hans de Goede
5bcec545a6 image-fit: Fix compiler warning in fit_conf_print()
This fixes the following compiler warning:

In file included from tools/common/image-fit.c:1:0:
./tools/../common/image-fit.c: In function ‘fit_conf_print’:
./tools/../common/image-fit.c:1470:27: warning: logical not is only applied
 to the left hand side of comparison [-Wlogical-not-parentheses]
    (const char **)&uname) > 0;

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-06-06 09:30:20 -04:00
Tom Rini
f1737152c0 Merge git://git.denx.de/u-boot-fdt 2015-06-05 12:14:01 -04:00
Paul Kocialkowski
10be5b5d3a fdt: Pass the device serial number through devicetree
Before device-tree, the device serial number used to be passed to the kernel
using ATAGs (on ARM). This is now deprecated and all the handover to the kernel
should now be done using device-tree. Thus, this passes the serial-number
property to the kernel using the serial-number property of the root node, as
expected by the kernel.

The serial number is a string that somewhat represents the device's serial
number. It might come from some form of storage (e.g. an eeprom) and be
programmed at factory-time by the manufacturer or come from identification
bits available in e.g. the SoC.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Simon Glass <sgj@chromium.org>
2015-06-05 08:32:07 -06:00
Bin Meng
77c2b210c7 cmd_ide: Eliminate build warnings in atapi_inquiry()
Eliminate the following build warning in atapi_inquiry():
  "warning: assignment from incompatible pointer type [enabled by default]"

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-06-04 02:39:39 -06:00
Tom Rini
563e53efaa Merge branch 'master' of git://git.denx.de/u-boot-net
Fixup include/configs/unipher.h to not set CONFIG_LIB_RAND

Signed-off-by: Tom Rini <trini@konsulko.com>
2015-06-02 08:53:41 -04:00
Joe Hershberger
6eed3786c6 net: Move the CMD_NET config to defconfigs
This also selects CONFIG_NET for any CONFIG_CMD_NET board.

Remove the imx default for CONFIG_NET.

This moves the config that was defined by 60296a8 (commands: add more
command entries in Kconfig).

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-06-01 09:40:15 -05:00
Joe Hershberger
7453cb595c Move setexpr to Kconfig
Another shell scripting command that has not been moved.

Moved using tools/moveconfig.py using these settings:

CMD_SETEXPR bool n y

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-06-01 09:39:29 -05:00
Hans de Goede
8454c84af5 usb: kbd: Fix key repeat not always working
The usb-kbd key repeat code assumes that reports get repeated every 40 ms,
this is never true when using CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP, and
does not always works for CONFIG_SYS_USB_EVENT_POLL and
CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE since not all usb keyboards honor
the usb_set_idle() command.

For CONFIG_SYS_USB_EVENT_POLL we must use usb_set_idle() since we do a
blocking wait for the hid report, so if we do not tell the keyboard to send
a hid report every 40ms even if nothing changes then we will block u-boot
for 1s (the default u-boot usb interrupt packet timeout). Note that in this
case on keyboards which do not support usb_set_idle() we loose and we actually
get 1s latencies on other u-boot activities.

For the other poll-methods this commit stops using usb_set_idle() and instead
repeats the last received hid-report every 40 ms as long as no new hid-report
is received. This fixes key-repeat not working at all with
CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP and fixes it not working with
keyboards which do not implement usb_set_idle() when using
CONFIG_SYS_USB_EVENT_POLL_VIA_INT_QUEUE.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-05-29 12:41:05 +02:00
Hans de Goede
126ca94274 usb: Remove unused variable in usb_setup_descriptor()
The compiler did not catch this as it was marked __maybe_unused.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-05-29 12:41:04 +02:00
Matt Porter
c777efe3a1 image: fix build when CONFIG_NR_DRAM_BANKS is disabled on ARM
common/image.c currently implicitly depends on CONFIG_NR_DRAM_BANKS
when CONFIG_ARM is enabled. Make this requirement explicit.

Signed-off-by: Matt Porter <mporter@konsulko.com>
2015-05-28 08:18:23 -04:00
Andrew Bradford
ea11b401b5 meminfo cmd: Enable printing >=4GiB SDRAM sizes
gd->ram_size is stored as phys_size_t type which can be bigger than an
unsigned long on some architectures.  When using unsigned long type,
SDRAM of 4GiB or larger will not print the correct size, but using
phys_size_t will.

Signed-off-by: Andrew Bradford <andrew.bradford@kodakalaris.com>
2015-05-28 08:18:21 -04:00
Paul Kocialkowski
3bc37b6d65 spl: spl_mmc: Error and count distinction
This introduces a distinction between return codes that are read bytes counts
and errors. Read bytes counts are erroneous when null (no data was read) while
errors are erroneous when non-null.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Tested-by: Tim Harvey <tharvey@gateworks.com>
2015-05-28 08:18:21 -04:00
Karl Apsite
d52e8575d9 Combine bootm_find_<thing> functions together
bootm_find_ramdisk_fdt() renamed to bootm_find_images() for readability.

The function bootm_find_ramdisk_fdt() appears to be a simple wrapper for
bootm_find_ramdisk(), bootm_find_fdt(), and now bootm_find_loadables().
I didn't see any other callers entering a bootm_find<thing>, so removing
the wrapper, and condensing these together hopefully makes the code a
little simpler.

Signed-off-by: Karl Apsite <Karl.Apsite@dornerworks.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-28 08:18:21 -04:00
Karl Apsite
84a07dbfd8 add boot_get_loadables() to load listed images
Added a trimmed down instance of boot_get_<thing>() to satisfy the
minimum requierments of the added feature.  The function follows the
normal patterns set by other boot_get<thing>'s, which should make it a
bit easier to combine them all together into one boot_get_image()
function in a later refactor.

Documentation for the new function can be found in source:
  include/image.h

Signed-off-by: Karl Apsite <Karl.Apsite@dornerworks.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-28 08:18:20 -04:00
Karl Apsite
ecf8cd6535 mkimage will now report information about loadable
Added FIT_LOADABLE_PROP, so the user can identify an optional entry
named "loadables" in their .its configuration. "loadables" is a comma
separated list in the .its

Documentation can be found in doc/uImage.FIT/source_file_format.txt and
                              doc/uImage.Fit/multi-with-loadables.its

Signed-off-by: Karl Apsite <Karl.Apsite@dornerworks.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-28 08:18:20 -04:00
Tim Harvey
c75648d75e env_mmc: add error message to pass to set_default_env
Add an error message that gets passed to set_default_env() like
env_nand implements. This message is displayed to the user as the
reason for falling back to the default environment.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2015-05-27 13:35:54 -04:00
Tuomas Tynkkynen
9b081d8893 menu: Return an error code if Ctrl-C is pressed
Previously, if the menu activated by the 'sysboot' command gets
interrupted by a Ctrl-C, the behaviour is as if the menu timeout was
reached - i.e. boot the default menu entry. This patch fixes that
so a Ctrl-C now terminates the command as the user would expect.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-27 13:35:54 -04:00
Tuomas Tynkkynen
0ece6b50f1 pxe: Fix crash if 'sysboot' is run without args
Previously, a NULL pointer dereference would occur if the 'sysboot'
command is executed without any arguments.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-27 13:35:48 -04:00
Tom Rini
9bea236b34 Merge branch 'master' of git://www.denx.de/git/u-boot-imx 2015-05-26 10:38:01 -04:00
Tim Harvey
9d3b565441 spl: spl_mmc: fix mmc Falcon mode regression
91199f4a5a broke mmc based Falcon mode.

The block_read function returns the number of blocks read thus the error
check needs to look for a return of 0 blocks read.

Cc: Paul Kocialkowski <contact@paulk.fr>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Paul Kocialkowski <contact@paulk.fr>
2015-05-26 14:26:27 +02:00
Joe Hershberger
94b467b14e env: Distinguish finer between source of env change
We already could tell the difference in the callback between an import
and "other" which we called interactive. Now add further distinction
between interactive (i.e. running env set / env edit / env ask / etc.
from the U-Boot command line) and programmatic (i.e. when u-boot source
calls any variant of setenv() ).

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-21 09:13:19 -04:00
Joe Hershberger
bdf1fe4e68 env: Add regex support to env_attrs
Allow the features that use env_attrs to specify regexs for the name

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-21 09:13:19 -04:00
Joe Hershberger
cca98fd6aa env: Allow env_attr_walk to pass a priv * to callback
In some cases it can be helpful to have context in the callback about
the calling situation. This is needed for following patches.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-21 09:13:19 -04:00
Joe Hershberger
032ea185d6 env: Simplify the reverse_strstr() interface
The logic to find the whole matching name was split needlessly between
the reverse_strstr function and its caller. Fully contain it to make the
interface for calling it more consistent.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
2015-05-21 09:13:19 -04:00
Joe Hershberger
7a0ad2cce3 env: Fix return values in env_attr_lookup()
This function returned numbers for error codes. Change them to error
codes.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-05-21 09:13:19 -04:00
Hans de Goede
a8552c7c9b console: Fix pre-console flushing via cfb_console being very slow
On my A10 OlinuxIno Lime I noticed a huge (5+ seconds) delay coming from
console_init_r. This turns out to be caused by the preconsole buffer flushing
to the cfb_console. The Lime only has a 16 bit memory bus and that is already
heavy used to scan out the 1920x1080 framebuffer.

The problem is that print_pre_console_buffer() was printing the buffer once
character at a time and the cfb_console code then ends up doing a cache-flush
for touched display lines for each character.

This commit fixes this by first building a 0 terminated buffer and then
printing it in one puts() call, avoiding unnecessary cache flushes.

This changes the time for the flush from 5+ seconds to not noticable.

The downside of this approach is that the pre-console buffer needs to fit
on the stack, this is not that much to ask since we are talking about plain
text here. This commit also adjusts the sunxi CONFIG_PRE_CON_BUF_SZ to
actually fit on the stack. Sunxi currently is the only user of the pre-console
code so no other boards need to be adjusted.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2015-05-19 18:37:30 +02:00