Commit graph

41693 commits

Author SHA1 Message Date
Marcin Niestroj
ab38bf6a39 board/chiliboard: Add support for chiliBoard
chiliBoard is a development board which uses chiliSOM as its base.

Hardware specification:
 * chiliSOM (TI AM335x, DRAM, NAND)
 * Ethernet PHY (id 0)
 * USB host (usb1)
 * MicroSD slot (mmc0)

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:37 -05:00
Marcin Niestroj
a73c8b32a7 ARM: am335x: Add support for chiliSOM
chiliSOM is a System On Module (http://http://grinn-global.com/chilisom/).
It can't exists on its own, but will be used as part of other boards.

Hardware specification:
 * TI AM335x processor
 * 128M, 256M or 512M DDR3 memory
 * up to 256M NAND

We place source inside arch/arm/mach-omap2/ directory and make it
possible to reuse initialization code (i.e. DDR, NAND init) for all
boards that use it.

Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:36 -05:00
Andrew F. Davis
a42eee1266 defconfig: Add a config for AM335x High Security EVM
Add a new defconfig file for the AM335x High Security EVM. This config
is specific for the case of memory device booting. Memory device booting
is handled separatly from peripheral booting on HS devices as the load
address changes.

This defconfig is the same as for the non-secure part, except for:
	CONFIG_TI_SECURE_DEVICE option set to 'y'
	CONFIG_ISW_ENTRY_ADDR updated for secure images.
	CONFIG_FIT_IMAGE_POST_PROCESS option set to 'y'
	CONFIG_SPL_FIT_IMAGE_POST_PROCESS option set to 'y'
	CONFIG_USE_TINY_PRINTF option set to 'y' to reduce SPL size
	CONFIG_SPL_SYS_MALLOC_SIMPLE set to 'y' to reduce SPL size

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:35 -05:00
Andrew F. Davis
b3d2861eb2 spl: Remove overwrite of relocated malloc limit
spl_init on some boards is called after stack and heap relocation, on
some platforms spl_relocate_stack_gd is called to handle setting the
limit to its value CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN when simple
SPL malloc is enabled during relocation. spl_init should then not
re-assign the old pre-relocation limit when this is defined.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:34 -05:00
Andrew F. Davis
1923d54bfc malloc_simple: Add debug statements to memalign_simple
Add debug statements to memalign_simple to match malloc_simple.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:34 -05:00
maxims@google.com
d9b88d2547 aspeed: Support for ast2500 Eval Board
ast2500 Eval Board device tree and board specific configuration.
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-01-28 14:04:33 -05:00
maxims@google.com
f6a6a9f049 aspeed: Board init functions and common configs for ast2500 based boards
Add configuration file with parameters that are very likely to be shared by
all ast2500-based boards.
Add ast2500-board.c file with the init code that is very likely to be
shared by all ast2500-based boards.
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-01-28 14:04:32 -05:00
maxims@google.com
14e4b14979 aspeed: Add basic ast2500-specific drivers and configuration
Clock Driver

This driver is ast2500-specific and is not compatible with earlier
versions of this chip. The differences are not that big, but they are
in somewhat random places, so making it compatible with ast2400 is not
worth the effort at the moment.

SDRAM MC driver

The driver is very ast2500-specific and is completely incompatible
with previous versions of the chip.

The memory controller is very poorly documented by Aspeed in the
datasheet, with any mention of the whole range of registers missing. The
initialization procedure has been basically taken from Aspeed SDK, where
it is implemented in assembly. Here it is rewritten in C, with very limited
understanding of what exactly it is doing.
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-01-28 14:04:29 -05:00
maxims@google.com
4697abea62 aspeed: Add drivers common to all Aspeed SoCs
Add support for Watchdog Timer, which is compatible with AST2400 and
AST2500 watchdogs. There is no uclass for Watchdog yet, so the driver
does not follow the driver model. It also uses fixed clock, so no clock
driver is needed.

Add support for timer for Aspeed ast2400/ast2500 devices.
The driver actually controls several devices, but because all devices
share the same Control Register, it is somewhat difficult to completely
decouple them. Since only one timer is needed at the moment, this should
be OK. The timer uses fixed clock, so does not rely on a clock driver.

Add sysreset driver, which uses watchdog timer to do resets and particular
watchdog device to use is hardcoded (0)
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-01-28 14:04:27 -05:00
Tom Rini
cd7b634413 arm: Note vendor-required status of certain MACH_TYPE values
In the cases of some boards, a MACH_TYPE number is used which is either
not registered upstream or worse (for functionality) is re-using the
number of a different (or reference) platform instead.  Make sure we
have a comment in these cases.

Cc: Albert ARIBAUD <albert.aribaud@3adev.fr>
Cc: Walter Schweizer <swwa@users.sourceforge.net>
Cc: Stefan Roese <sr@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Stefan Roese <sr@denx.de>
2017-01-28 14:04:26 -05:00
Tom Rini
4247fd6946 am335x_shc: Drop MACH_TYPE usage
This board is using MACH_TYPE values that were clearly picked during
development and not registered.  Remove rather than support.

Cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:25 -05:00
Tom Rini
92a1babf75 arm: Clean up MACH_TYPE_xxx usage after re-sync of mach-types
With the latest mach-types values we have many instances where we no
longer need to define a value and a few cases where the name (but not
value) have changed slightly.

Signed-off-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:24 -05:00
Tom Rini
94ba26f2bc Revert "arm: Remove unregister MACH_TYPE_xxx uses"
This reverts commit 70b26cd057.

This is not a strict revert as it is easier to fix
board/atmark-techno/armadillo-800eva/armadillo-800eva.c to now the
correct name (same value) than to revert that change too.

Signed-off-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:22 -05:00
Tom Rini
539cb8038e arm: Re-sync with full list of MACH_TYPE_xxx values
This re-syncs us with the official and full list of MACH_TYPE_xxx values
from http://www.armlinux.org.uk/developer/machines/

Signed-off-by: Tom Rini <trini@konsulko.com>
2017-01-28 14:04:20 -05:00
Patrick Delaunay
aed8fdaae9 disk: convert CONFIG_PARTITION_TYPE_GUID to Kconfig
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:48:04 -05:00
Patrick Delaunay
b331cd6204 cmd, disk: convert CONFIG_PARTITION_UUIDS, CMD_PART and CMD_GPT
We convert CONFIG_PARTITION_UUIDS to Kconfig first.  But in order to cleanly
update all of the config files we must also update CMD_PART and CMD_GPT to also
be in Kconfig in order to avoid complex logic elsewhere to update all of the
config files.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-01-28 08:48:03 -05:00
Patrick Delaunay
4ac96345b2 kbuild: add include linux/kconfig.h in config.h
Allow to use define CONFIG_IS_ENABLED
in include/config_fallbacks.h

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:47:42 -05:00
Patrick Delaunay
bd42a94268 disk: convert CONFIG_EFI_PARTITION to Kconfig
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:47:42 -05:00
Patrick Delaunay
863c5b6cdd disk: convert CONFIG_AMIGA_PARTITION to Kconfig
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:47:36 -05:00
Patrick Delaunay
1acc008787 disk: convert CONFIG_ISO_PARTITION to Kconfig
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:47:35 -05:00
Patrick Delaunay
b0cf733933 disk: convert CONFIG_DOS_PARTITION to Kconfig
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:47:34 -05:00
Patrick Delaunay
f18fa31cdc disk: convert CONFIG_MAC_PARTITION to Kconfig
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:47:31 -05:00
Patrick Delaunay
e274ef6b57 disk: convert CONFIG_PARTITIONS to Kconfig
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
2017-01-28 08:47:30 -05:00
Tom Rini
cf4128e53c Merge git://www.denx.de/git/u-boot-marvell 2017-01-26 12:26:24 -05:00
Ladislav Michl
f59f07ece5 cmd: ubi: allow '-' to specify maximum volume size
Currently maximum volume size can be specified only if no other
arguments are used. Use '-' placeholder as volume size to allow
maximum volume size to be specified together with volume id and
type.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
2017-01-26 07:00:25 +01:00
Tom Rini
79a34b71c9 Merge git://git.denx.de/u-boot-mpc85xx 2017-01-25 17:38:45 -05:00
Simon Glass
a8523a808f Drop CONFIG_CMD_DOC
This is not used in U-Boot, and the only usage calls a non-existent
function. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:45 -05:00
Simon Glass
a009f36cfe Drop prt_mpc5xxx_clks() in favour of print_cpuinfo()
Rather than having an arch-specific function, use the existing generic
one.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:44 -05:00
Simon Glass
cc664000c2 Drop the static inline print_cpuinfo()
This is only called from one place and the function cannot be inlined.
Convert it to a normal function.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:43 -05:00
Simon Glass
37b499c43f Drop CONFIG_WINBOND_83C553
This is not used in U-Boot. Drop this option and associated dead code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:43 -05:00
Simon Glass
8f3086aaac powerpc: Drop CONFIG_SYS_ALLOC_DPRAM
This is not defined anywhere in U-Boot. Drop this dead code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:42 -05:00
Simon Glass
cbcbf71bf2 powerpc: Drop probecpu() in favour of arch_cpu_init()
To avoid an unnecessary arch-specific call in board_init_f(), rename this
function.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:41 -05:00
Simon Glass
4585601ae2 Convert CONFIG_ARCH_MISC_INIT to Kconfig
This converts the following to Kconfig:
   CONFIG_ARCH_MISC_INIT

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:41 -05:00
Simon Glass
a5d67547dd Convert CONFIG_BOARD_EARLY_INIT_F to Kconfig
This converts the following to Kconfig:
   CONFIG_BOARD_EARLY_INIT_F

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 17:38:32 -05:00
Simon Glass
a421192fb8 Convert CONFIG_ARCH_EARLY_INIT_R to Kconfig
This converts the following to Kconfig:
   CONFIG_ARCH_EARLY_INIT_R

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 16:43:48 -05:00
Simon Glass
d02f5ea301 config: Drop CONFIG_ARCH_DMA_PIO_WORDS
This is not defined by any board in U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-01-25 16:42:20 -05:00
Konstantin Porotchkin
e559ef1ae8 arm64: mvebu: Update bubt command MMC block device access
Update the MMC block device access code in bubt command
implementation according to the latest MMC driver changes.

Change-Id: Ie852ceefa0b040ffe1362bdb7815fcea9b2d923b
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Neta Zur Hershkovits <neta@marvell.com>
Cc: Omri Itach <omrii@marvell.com>
Cc: Igal Liberman <igall@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
2017-01-25 07:04:22 +01:00
Stefan Roese
274d3562fd arm64: mvebu: Enable SDHCI/MMC support for the db-88f7040/8040
This patch enables the MMC support for the SDHCI controller on the
Armada 7k db-88f7040 and the Armada 8k db-88f8040 board.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
2017-01-25 07:04:17 +01:00
Stefan Roese
27090324c2 arm64: mvebu: Armada 7040-db: Add SDHCI device tree nodes
This patch adds the SDHCI device tree nodes to the Armada 7040-db
dts file.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
2017-01-25 07:04:12 +01:00
Stefan Roese
b14b0b1e7b arm64: mvebu: Armada 7k/8k: Add SDHCI device tree nodes
This patch adds the SDHCI device tree nodes to the Armada AP806 dtsi
file which is used by the Armada 7k/8K SoCs.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
2017-01-25 07:04:08 +01:00
Stefan Roese
ff11d622ea arm64: mvebu: Enable SDHCI/MMC support for the db-88f3720
This patch enables the MMC support for the SDHCI controller on the
Armada 3700 db-88f3720 board.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
2017-01-25 07:04:03 +01:00
Stefan Roese
22074fc5e2 arm64: mvebu: Armada 3720-db: Add SDHCI device tree nodes
This patch adds the SDHCI device tree nodes to the Armada 3700-db
dts file.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
2017-01-25 07:03:58 +01:00
Stefan Roese
cbe0ece8c9 arm64: mvebu: Armada 3700: Add SDHCI device tree nodes
This patch adds the SDHCI device tree nodes to the Armada 3700 dtsi
file.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
2017-01-25 07:03:54 +01:00
Stefan Roese
b6acb5f1d9 mmc: Add Marvell Xenon SDHCI controller driver
This driver implementes platform specific code for the Xenon SDHCI
controller which is integrated in the Marvell MVEBU Armada 37xx and
Armada 7k / 8K SoCs.

History:
This driver is ported from the Marvell U-Boot version 2015.01 which is
written by Victor Gu <xigu@marvell.com> with minor changes ported from
the Linux driver which is written by Ziji Hu <huziji@marvell.com>.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2017-01-25 07:03:49 +01:00
Stefan Roese
210841c690 mmc: sdhci: Add support for optional controller specific set_ios_post()
Some SDHCI drivers might need to do some special controller configuration
after the common clock set_ios() function has been called (speed / width
configuration). This patch adds a call to the newly created function
set_ios_port() when its configured in the host driver.

This will be used by the Xenon SDHCI controller driver used on the
Marvell Armada 3700 and 7k/8k ARM64 SoCs.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2017-01-25 07:03:44 +01:00
Stefan Roese
899fb9e352 mmc: sdhci: Clear SDHCI_CLOCK_CONTROL before configuring the new value
This patch completely clears the SDHCI_CLOCK_CONTROL register before the
new value is configured instead of just clearing the 2 bits
SDHCI_CLOCK_CARD_EN and SDHCI_CLOCK_INT_EN. Without this change, some
clock configurations will lead to the "Internal clock never stabilised."
error message on the Xenon SDHCI controller used on the Marvell Armada
3700 and 7k/8k ARM64 SoCs.

The Linux SDHCI core driver also writes 0 to this register before
the new value is configured. So this patch simplifies the driver a bit
and brings the U-Boot driver more in-line with the Linux one.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2017-01-25 07:03:39 +01:00
Tony O'Brien
76866600f5 powerpc: Enable flush and invalidate dcache by range for MPC85xx
Commit ac337168a unified functions to flush and invalidate dcache by
range. These two functions were no-ops for SoCs other than 4xx and
MPC86xx. Adding these functions seemed to be correct but introduced
issues in some drivers when the dcache was flushed. While the root
cause was under investigation, these functions were disabled in
Commit cb1629f91a for affected SoCs, including the MPC85xx, to make
the various drivers work.

On the T208x USB stopped working after v2016.07 was pulled.  After
re-enabling the dcache functions for the MPC85xx it started working
again.  The USB and DPPA Ethernet drivers have been seen as
operational after this change but other drivers cannot be tested.

Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Tony O'Brien <tony.obrien@alliedtelesis.co.nz>
Cc: Marek Vasut <marex@denx.de>
Cc: York Sun <york.sun@nxp.com>
Reviewed-by: York Sun <york.sun>
2017-01-24 13:28:31 -08:00
Tony O'Brien
09bfd962bd mpc85xx: pcie: Implement workaround for Erratum A007815
The read-only-write-enable bit is set by default and must be cleared
to prevent overwriting read-only registers.  This should be done
immediately after resetting the PCI Express controller.

Reviewed-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Signed-off-by: Tony O'Brien <tony.obrien@alliedtelesis.co.nz>
[York S: Move SYS_FSL_ERRATUM_A007815 to Kconfig]
Reviewed-by: York Sun <york.sun@nxp.com>
2017-01-24 13:28:31 -08:00
Darwin Dingel
06ad970b53 powerpc: mpc85xx: Implemente workaround for CPU erratum A-007907
Core hang occurs when using L1 stashes. Workaround is to disable L1
stashes so software uses L2 cache for stashes instead.

Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Darwin Dingel <darwin.dingel@alliedtelesis.co.nz>
Cc: York Sun <york.sun@nxp.com>
[York S: Move SYS_FSL_ERRATUM_A007907 to Kconfig]
Reviewed-by: York Sun <york.sun@nxp.com>
2017-01-24 13:28:02 -08:00
Tom Rini
f2b0c007f8 travis-ci: Add swig and libpython-dev to the package list
As part of 1905c8fc71 we introduced failures depending on if swig and
libpython-dev are installed or not.  To provide coverage for this are of
code in the future ensure we have these packages installed.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2017-01-24 10:35:57 -05:00