Commit graph

61 commits

Author SHA1 Message Date
Simon Glass
82e26e0d68 spl: Use CONFIG_SPL... instead of CONFIG_..._SPL_...
We like to put the SPL first so it is clear that it relates to SPL. Rename
various malloc-related options which have crept in, to stick to this
convention.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Martyn Welch <martyn.welch@collabora.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com>
2023-10-06 14:38:11 -04:00
Tom Rini
c960c0fd38 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2023-05-01 11:50:26 -04:00
Tom Rini
fcb5117da8 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2023-02-17 09:58:06 -05:00
Michal Simek
36c9f4ad12 arm64: zynqmp: Remove xilinx_zynqmp_mini_emmc/qspi.h configs
The commit eaf6ea6a1d ("Migrate CUSTOM_SYS_INIT_SP_ADDR to Kconfig using
system-constants.h") moved custom init stack pointer address to Kconfig
which ends up in situation that xilinx_zynqmp_mini_emmc/qspi.h are not
needed anymore. That's why remove files and move defconfigs directly to
xilinx_zynqmp_mini.h configuration.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/61ae40cf63aabd08adb386c870d3392b0b606fc9.1674040373.git.michal.simek@amd.com
2023-01-24 13:57:39 +01:00
Michal Simek
92e6900536 arm64: zynqmp: Do not enable IPI by default
ZynqMP mini configurations are not using IPI driver and enabling this is
adding additional ~1200 Bytes (depends on configuration).
This ends up in situation that there is no enough space in OCM for
relocation that's why disable this driver for all mini configurations.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/c71bab3927cb71ae517d9c21f59f3d5cf0caf712.1669734580.git.michal.simek@amd.com
2022-12-05 08:55:55 +01:00
Michal Simek
74673ca705 arm64: zynqmp: Do not include psu_init to U-Boot by default
The commit ed35de6170 ("Convert CONFIG_ZYNQMP_PSU_INIT_ENABLED to
Kconfig") converted CONFIG_ZYNQMP_PSU_INIT_ENABLED symbol and enabled it by
default which is not correct configuration.
Intention of this config was to have it enabled by default for SPL and
provide an option to users to also do low level initialization directly
from U-Boot.
That's why it is necessary to define second symbol with SPL marking in it
and properly use symbols depends on usage in Makefile.
Also disable ZYNQMP_PSU_INIT_ENABLED from boards which enables it by
default. CONFIG_SPL_ZYNQMP_PSU_INIT_ENABLED is enabled by default when SPL
is enabled.

Reported-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/d5fcbd66b05bf0d7ef594e66464ee23b48c5e4cc.1669969083.git.michal.simek@amd.com
2022-12-05 08:55:55 +01:00
Simon Glass
984639039f Rename CONFIG_SYS_TEXT_BASE to CONFIG_TEXT_BASE
The current name is inconsistent with SPL which uses CONFIG_SPL_TEXT_BASE
and this makes it imposible to use CONFIG_VAL().

Rename it to resolve this problem.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-10-31 11:01:31 -04:00
Michal Simek
a5bd1fe863 arm64: zynqmp: Disable LMB for mini configurations
There is no need to have LMB enabled that's why save some space by
disabling it.

   aarch64: (for 8/8 boards) all -1168.5 rodata -105.5 text -1063.0
            xilinx_zynqmp_mini: all -2013 rodata -185 text -1828
            xilinx_zynqmp_mini_qspi: all -2013 rodata -185 text -1828
            xilinx_zynqmp_mini_emmc0: all -2661 rodata -237 text -2424
            xilinx_zynqmp_mini_emmc1: all -2661 rodata -237 text -2424

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/f735d7691f4e7a7958d985b22c40aeb26e37a404.1657183534.git.michal.simek@amd.com
2022-07-26 08:23:54 +02:00
Stefan Herbrechtsmeier
fcbc43bd50 xilinx: zynqmp: Do not use 0 as spl bss start address
Do not use 0 as address for memory because of the special meaning for
pointers (null pointer). Change the spl bss start address to the second
page.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Link: https://lore.kernel.org/r/20220714134733.7487-1-stefan.herbrechtsmeier-oss@weidmueller.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-07-26 08:23:54 +02:00
Tom Rini
10f6e4dc3a Convert CONFIG_SYS_SPL_MALLOC_SIZE et al to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_SPL_MALLOC_SIZE
   CONFIG_SYS_SPL_MALLOC_START

We introduce a default value here as well, and CONFIG_SYS_SPL_MALLOC to
control if we have a malloc pool or not.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:28 -04:00
Tom Rini
6600b355c7 Convert CONFIG_SPL_BSS_START_ADDR to Kconfig
This converts the following to Kconfig:
   CONFIG_SPL_BSS_START_ADDR

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:28 -04:00
Tom Rini
f113d7d303 Convert CONFIG_SPL_STACK to Kconfig
This converts the following to Kconfig:
   CONFIG_SPL_STACK

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:27 -04:00
Tom Rini
eaf6ea6a1d Migrate CUSTOM_SYS_INIT_SP_ADDR to Kconfig using system-constants.h
- Make all users of CUSTOM_SYS_INIT_SP_ADDR reference SYS_INIT_SP_ADDR
- Introduce HAS_CUSTOM_SYS_INIT_SP_ADDR to allow for setting the stack
  pointer directly, otherwise we use the common calculation.
- On some platforms that were using the standard calculation but did not
  set CONFIG_SYS_INIT_RAM_SIZE / CONFIG_SYS_INIT_RAM_ADDR, set them.
- On a small number of platforms that were not subtracting
  GENERATED_GBL_DATA_SIZE do so now via the standard calculation.
- CONFIG_SYS_INIT_SP_OFFSET is now widely unused, so remove it from most
  board config header files.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:19 -04:00
Tom Rini
9b5f9aeb3b Convert CONFIG_SPL_BSS_MAX_SIZE et al to Kconfig
This converts the following to Kconfig:
   CONFIG_SPL_BSS_MAX_SIZE
   CONFIG_SPL_MAX_FOOTPRINT

Note that the da850evm platforms were violating the "only use one" rule
here, and so now hard-code their BSS limit.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:10 -04:00
Tom Rini
ca8a329a1b Convert CONFIG_SPL_PAD_TO et al to Kconfig
This converts the following to Kconfig:
   CONFIG_SPL_PAD_TO
   CONFIG_SPL_MAX_SIZE
   CONFIG_TPL_PAD_TO
   CONFIG_TPL_MAX_SIZE

Note that we need to make TPL_MAX_SIZE be hex, and so move and convert the
existing places.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:06 -04:00
Tom Rini
d31466b382 Convert CONFIG_SYS_CBSIZE to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_CBSIZE

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:00 -04:00
Tom Rini
d0ee7f295d Convert CONFIG_SYS_PBSIZE to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_PBSIZE

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:09:00 -04:00
Tom Rini
cf493582f8 Convert CONFIG_SYS_MAXARGS to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_MAXARGS

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-06-06 12:08:58 -04:00
T Karthik Reddy
1720336d3c Revert "arm64: xilinx: Set CONFIG_ZYNQMP_FIRMWARE config for mini emmc"
This reverts commit 122ca834f2.

Disable CONFIG_ZYNQMP_FIRMWARE config from zynqmp & versal mini emmc
defconfig files, as mini emmc does not use any firmware.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Acked-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/f73a50980d3af894f1e86cfc98742dbdec573760.1651048242.git.michal.simek@xilinx.com
2022-05-13 09:10:02 +02:00
Tom Rini
d46e86d25c configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-04-08 13:36:51 -04:00
Tom Rini
15b4aed473 Convert CONFIG_CLOCKS to Kconfig
This converts the following to Kconfig:
   CONFIG_CLOCKS

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-04-01 10:28:47 -04:00
Tom Rini
bc30585888 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-03-18 12:48:40 -04:00
Alper Nebi Yasak
a8c281d4b7 Convert CONFIG_REMAKE_ELF to Kconfig
This converts the following to Kconfig:
   CONFIG_REMAKE_ELF

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
2022-02-09 09:16:47 -05:00
Tom Rini
54c5c2b8fe configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-01-24 17:36:30 -05:00
Tom Rini
ed35de6170 Convert CONFIG_ZYNQMP_PSU_INIT_ENABLED to Kconfig
This converts the following to Kconfig:
   CONFIG_ZYNQMP_PSU_INIT_ENABLED

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
9802154a94 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-11-01 12:19:22 +00:00
Tom Rini
7cfbba36e9 Convert CONFIG_SYS_MALLOC_LEN to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_MALLOC_LEN

Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
2021-08-31 17:47:49 -04:00
Tom Rini
49c8ef0e45 Convert CONFIG_SYS_LOAD_ADDR to Kconfig
Now that we have consistent usage, migrate this symbol to Kconfig.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Rick Chen <rick@andestech.com>
2021-08-31 17:46:37 -04:00
Tom Rini
6b69f15fd6 Xilinx changes for v2021.10
clk:
 - Add driver for Xilinx Clocking Wizard IP
 
 fdt:
 - Also record architecture in /fit-images
 
 net:
 - Fix plat/priv data handling in axi emac
 - Add support for 10G/25G speeds
 
 pca953x:
 - Add missing dependency on i2c
 
 serial:
 - Fix dependencies for DEBUG uart for pl010/pl011
 - Add setconfig option for cadence serial driver
 
 watchdog:
 - Add cadence wdt expire now function
 
 zynq:
 - Update DT bindings to reflect the latest state and descriptions
 
 zynqmp:
 - Update DT bindings to reflect the latest state and descriptions
 - SPL: Add support for ECC DRAM initialization
 - Fix R5 core 1 handling logic
 - Enable firmware driver for mini configurations
 - Enable secure boot, regulators, wdt
 - Add support xck devices and 67dr
 - Add psu init for sm/smk-k26 SOMs
 - Add handling for MMC seq number via mmc_get_env_dev()
 - Handle reserved memory locations
 - Add support for u-boot.itb generation for secure OS
 - Handle BL32 handoffs for secure OS
 - Add support for 64bit addresses for u-boot.its generation
 - Change eeprom handling via nvmem aliases
 -----BEGIN PGP SIGNATURE-----
 
 iF0EABECAB0WIQQbPNTMvXmYlBPRwx7KSWXLKUoMIQUCYN105QAKCRDKSWXLKUoM
 IZiFAJ9CIiEpHiBbnAhA0VOMGoaXHGULywCdED/5dNgVtc1C7y4avzETbEyWzD4=
 =CdMa
 -----END PGP SIGNATURE-----

Merge tag 'xilinx-for-v2021.10' of https://source.denx.de/u-boot/custodians/u-boot-microblaze into next

Xilinx changes for v2021.10

clk:
- Add driver for Xilinx Clocking Wizard IP

fdt:
- Also record architecture in /fit-images

net:
- Fix plat/priv data handling in axi emac
- Add support for 10G/25G speeds

pca953x:
- Add missing dependency on i2c

serial:
- Fix dependencies for DEBUG uart for pl010/pl011
- Add setconfig option for cadence serial driver

watchdog:
- Add cadence wdt expire now function

zynq:
- Update DT bindings to reflect the latest state and descriptions

zynqmp:
- Update DT bindings to reflect the latest state and descriptions
- SPL: Add support for ECC DRAM initialization
- Fix R5 core 1 handling logic
- Enable firmware driver for mini configurations
- Enable secure boot, regulators, wdt
- Add support xck devices and 67dr
- Add psu init for sm/smk-k26 SOMs
- Add handling for MMC seq number via mmc_get_env_dev()
- Handle reserved memory locations
- Add support for u-boot.itb generation for secure OS
- Handle BL32 handoffs for secure OS
- Add support for 64bit addresses for u-boot.its generation
- Change eeprom handling via nvmem aliases
2021-07-01 08:57:23 -04:00
Tom Rini
2bba78076b configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-06-28 10:17:29 -04:00
T Karthik Reddy
122ca834f2 arm64: xilinx: Set CONFIG_ZYNQMP_FIRMWARE config for mini emmc
CONFIG_ZYNQMP_FIRMWARE enables zynqmp firmware driver.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
2021-06-23 09:48:35 +02:00
Ashok Reddy Soma
8600dd8ad4 arm64: zynqmp: Increase size of malloc pool
size of malloc() pool for use before relocation is not sufficient
for ZynqMP mini u-boot with emmc configuration. Increase it to 4K.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2021-03-30 12:03:24 +02:00
Tom Rini
0817daa760 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-10-09 12:22:06 -04:00
Michal Simek
6cb402f38e ARM: zynqmp: Fix SPL_DM_SPI dependencies
Add missing dependencies for DM_SPI_FLASH.
Kconfig reports it as:
WARNING: unmet direct dependencies detected for SPL_DM_SPI_FLASH
  Depends on [n]: SPL [=n] && SPL_DM [=n]
  Selected by [y]:
  - ARCH_ZYNQMP [=y] && <choice> && SPL_DM_SPI [=y]

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-09-23 10:31:41 +02:00
Tom Rini
554e5514ac configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-08-10 15:31:07 -04:00
Tom Rini
f7d0ae9c63 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-07-28 08:46:52 -04:00
Tom Rini
eabbf801c6 Convert CONFIG_BOARD_EARLY_INIT_F et al to Kconfig
This converts the following to Kconfig:
   CONFIG_BOARD_EARLY_INIT_F
   CONFIG_BOARD_EARLY_INIT_R

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-06-26 10:29:05 -04:00
Tom Rini
d16c9d0b37 Convert CONFIG_BZIP2 et al to Kconfig
This converts the following to Kconfig:
   CONFIG_BZIP2
   CONFIG_GZIP
   CONFIG_LZO
   CONFIG_ZLIB
   CONFIG_LZMA
   CONFIG_LZO

Signed-off-by: Tom Rini <trini@konsulko.com>
2020-06-04 18:10:02 -04:00
Tom Rini
c2a38411d1 serial: Convert ARM_DCC to Kconfig
The symbol "CONFIG_ARM_DCC" is used to control building
drivers/serial/arm_dcc.c.  Provide a simple Kconfig entry for this.

Cc: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Tom McLeod <tom.mcleod@opalkelly.com>
Cc: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
2020-06-04 15:04:11 -04:00
Michal Simek
727b396085 arm64: zynqmp: Move PANIC to Kconfig
Convert another option Kconfig.

Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2020-01-14 09:05:54 +01:00
Tom Rini
0cfccb5401 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2019-12-04 17:18:38 -05:00
Tom Rini
8d8ee47e03 env: Add CONFIG_SYS_RELOC_GD_ENV_ADDR symbol
Today in initr_reloc_global_data() we use some non-obvious tests to
determine if we need to relocate the env_addr within gd or not.  In
order to facilitate migration of other symbols to Kconfig we need to
introduce a new symbol for this particular use case.

Cc: Wolfgang Denk <wd@denx.de>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-11-20 12:24:50 -05:00
Michal Simek
3c3886d75b arm64: zynqmp: Define default SYS_PROMPT
All boards are using the same prompt that's why add it as default value to
Kconfig to simplify defconfigs.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
2019-10-08 09:55:11 +02:00
Michal Simek
0413f9c3e6 arm64: zynqmp: Define default SPL_TEXT_BASE address in Kconfig
Define default address via Kconfig. There is no need to change this address
for most of the boards but it is also possible. This one line save a lot of
lines in defconfigs that's why make sense to do it.

The similar change has been done by commit 9340d8fe8b
("sunxi: move CONFIG_SPL_TEXT_BASE from *_defconfig to Kconfig")

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Luca Ceresoli <luca@lucaceresoli.net>
2019-10-08 09:11:13 +02:00
Tom Rini
665c35a764 configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2019-09-23 11:47:37 -04:00
Trevor Woerner
a0aba8a2eb CONFIG_SYS_[DI]CACHE_OFF: convert to Kconfig
CONFIG_SYS_[DI]CACHE_OFF had been partially converted to Kconfig
parameters; only for the ARC architecture. This patch turns these two
parameters into Kconfig items everywhere else they are found.

All of the include/configs/* and defconfig changes in this patch are
for arm machines only. The Kconfig changes for arc, nds32, riscv,
and xtensa have been included since these symbols are found in code
under arch/{arc,nds32,riscv,xtensa}, however, no currently-defined
include/configs/* or defconfigs for these architectures exist which
include these symbols.

These results have been confirmed with tools/moveconfig.py.

Acked-by: Alexey Brodkin <abrodkin@snopsys.com>
Signed-off-by: Trevor Woerner <trevor@toganlabs.com>
[trini: Re-migrate for a few more boards]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-05-18 08:15:34 -04:00
Alex Kiernan
623de3f086 Convert CONFIG_SUPPORT_EMMC_BOOT to Kconfig
This converts the following to Kconfig:
   CONFIG_SUPPORT_EMMC_BOOT

As requested by Michal Simek <michal.simek@xilinx.com>, these boards
have no eMMC so CONFIG_SUPPORT_EMMC_BOOT has not been migrated:

  xilinx_zynqmp_zc1275_revB
  xilinx_zynqmp_zc1751_xm018_dc4
  xilinx_zynqmp_zc1751_xm019_dc5
  xilinx_zynqmp_zcu100_revC
  xilinx_zynqmp_zcu102_rev1_0
  xilinx_zynqmp_zcu102_revA
  xilinx_zynqmp_zcu102_revB
  xilinx_zynqmp_zcu104_revA
  xilinx_zynqmp_zcu104_revC
  xilinx_zynqmp_zcu106_revA
  xilinx_zynqmp_zcu111_revA

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Ramon Fried <ramon.fried@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
2019-05-04 13:04:12 -04:00
Simon Goldschmidt
f89d6133ee configs: move CONFIG_SPL_TEXT_BASE to Kconfig
Moved CONFIG_SPL_TEXT_BASE to common/spl/Kconfig and migrate existing
values.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
[trini: Re-run migration]
Signed-off-by: Tom Rini <trini@konsulko.com>
2019-04-29 21:41:40 -04:00
Tom Rini
d168bcb6fe configs: Resync with savedefconfig
Rsync all defconfig files using moveconfig.py

Signed-off-by: Tom Rini <trini@konsulko.com>
2019-04-29 21:41:40 -04:00
Michal Simek
fb69310850 arm64: zynqmp: Setup DM_ETH/MMC if NET/MMC is enabled
Setup proper ETH/MMC dependency for the whole platform.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2019-01-24 10:03:43 +01:00