The spd.bin file was not getting generated properly, so moved logic
to variant's makefile.
BUG=b:64395641
BRANCH=none
TEST=Verify "./util/abuild/abuild -p none -t google/zoombini -x -a"
compiles successfully and spd.bin is found when booting.
Change-Id: I4642d6ddb5e65f721d1bde31ca0ca5b4438da554
Signed-off-by: Nick Vaccaro <nvaccaro@chromium.org>
Reviewed-on: https://review.coreboot.org/23190
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Add the 8086:191f North/Host Bridge to the list of definitions.
Adding the definiton makes the Northbridge get recognized by inteltool.
It is found in the Intel i5-6600K CPU:
https://ark.intel.com/products/88191/Intel-Core-i5-6600K-Processor-6M-Cache-up-to-3_90-GHz
Change-Id: Id746d1e8b3bb90b3b68a2f6c372890671dd61b5f
Signed-off-by: Christoph Pomaska <cp_public@gmx.de>
Reviewed-on: https://review.coreboot.org/23055
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This patch fixes 2 edp display issues:
1. When rk_edp_prepare fails >3 times, edp_init isn't run because
while-condition is not satisfied. Then, only a partial init sequence is
ran. This causes all aux transactions to fail.
2. If rk_edp_prepare never succeeds, coreboot never leaves link training
stage due to infinite loop. Boot process is stuck.
TEST=Boot past eDP initialization stage and make sure AP logs don't have
show aux transaction fails.
Change-Id: I44c3f53e8786558c43078d4afe9acde4d64796e7
Signed-off-by: Ege Mihmanli <egemih@google.com>
Reviewed-on: https://review.coreboot.org/23152
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This change adds a call to gspi_early_bar_init in bootblock to
allocate a temporary BAR for any GSPI buses that are accessed before
resource allocation is done in ramstage.
Change-Id: I82387a76d20fb272da6271dd9e5bf2c835d5b146
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/22781
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Creating initial common acpi and implement halt.h
BUG=b:71575631
BRANCH=none
TEST=put poweroff() call in Kahlee's mainboard_final and board turns off
correctly
Change-Id: Ie7dd9851dcb240c53f2487b4f4b8a3e51d6b98d6
Signed-off-by: Chris Ching <chingcodes@chromium.org>
Reviewed-on: https://review.coreboot.org/23074
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Now that all the files under util/gitconfig have their license headers,
enable lint-000-license-headers to check the directory too.
Change-Id: I242256f72ac70553535509f83166c6d1ddb16fdc
Signed-off-by: Alex Thiessen <alex.thiessen.de+coreboot@gmail.com>
Reviewed-on: https://review.coreboot.org/23098
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
License header for the `gitconfig.sh` was copied from the Makefile it
was extracted from in commit 9ab8ae6a (util/gitconfig: Make gitconfig
a bash script).
License header for the pre-commit hook names Patrick Georgi as the
copyright holder as he is the original author.
Change-Id: Ie051e5e6ae7571050ece383e6be8236ed7d1ddd9
Signed-off-by: Alex Thiessen <alex.thiessen.de+coreboot@gmail.com>
Reviewed-on: https://review.coreboot.org/23097
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
The .spd.hex text is added to the name by the build process. This
was causing a failure because we were trying to add the files:
'file.spd.hex.spd.hex' to the build.
Remove the additional .spd.hex text.
BUG=b:71535311
TEST=Build
Change-Id: I11df7a90c979503676a66c6502900a13f1a8e359
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/23189
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Marc Jones <marc@marcjonesconsulting.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Chris Ching <chingcodes@chromium.org>
Add support for memory configuration by providing weak implementation
from the baseboard. All SPD files are present under spd/
directory. SPD_SOURCES must be provided by the variants to ensure
that required SPD hex files are included in the SPD binary.
BUG=b:64395641
BRANCH=None
TEST=Verify "./util/abuild/abuild -p none -t google/zoombini -x -a"
compiles successfully.
Change-Id: I449ab56dfc7a75752944b58ba6291b5ee32f81ad
Signed-off-by: Nick Vaccaro <nvaccaro@chromium.org>
Reviewed-on: https://review.coreboot.org/22205
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Since the current hardware revision does not have external pull on the
pen eject signal, this change adds internal pull-up on it.
Change-Id: I426d9833d7efbd8735b6f2b4896d1012b62cb4b8
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/23143
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Tony Lin <tonycwlin@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
The i2c_bus_address array doesn't need to be a global symbol.
Also, the array initializer had some weird indention and there
was an extra new line. For consistency the first entry is multiplied
by 0 so the formatting is similar.
BUG=b:69416132
Change-Id: I74f6dca3a22a245759536f792ce04ac61735b6d0
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/23170
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Chris Ching <chingcodes@chromium.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Rainier, a scarlet derived board, was configured to use spi0 for tpm
driver by default. This patch switches it to spi2 to reflect recent
changes in scarlet-derived boards.
Change-Id: Ib67109786512c068bb957890f456bccff7addc86
Signed-off-by: Ege Mihmanli <egemih@google.com>
Reviewed-on: https://review.coreboot.org/23129
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Enable DDI-A (eDP) when pre-OS graphics is not Loaded or in normal mode.
This will make sure that kernel will detect eDP.
TEST=Edp should come up in normal mode.
Change-Id: I6353020f892f2d7b75997eace88b3074adc32aef
Signed-off-by: Abhay Kumar <abhay.kumar@intel.com>
Reviewed-on: https://review.coreboot.org/22799
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
The build system for the SeaBIOS payload needs this when
DRIVERS_UART_8250MEM is set. Set it to the first uart controller,
which the coreboot code also seems to do.
Fixes: https://ticket.coreboot.org/issues/150
Change-Id: I962f750f89e0352082e0b7415ceaa9bd350fdf0b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/23065
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This change adds basic support for the SuperIO chip ITE IT8623E.
Due to the lack of a datasheet, defaults are shown as "not available (NA)"
in superiotool's register dump. LDNs defined in it8623e.h are
definitely correct and working as expected.
Change-Id: I05832c4db7ab59541337f11200640316376e792e
Signed-off-by: Gergely Kiss <mail.gery@gmail.com>
Reviewed-on: https://review.coreboot.org/23001
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
CONFIG_AGESA_SPLIT_MEMORY_FILES controls whether AGESA is split into
pre- and post-memory binaries when it is built. Building AGESA this way
is required when doing the new "load post-memory AGESA binary into ram"
feature.
Thus, condition this new path on the CONFIG option being enabled.
BUG=b:71641792
TEST=build and boot kahlee with CONFIG_AGESA_SPLIT_MEMORY_FILES disabled
Change-Id: Ibec9db67437c57092e0f7acf0e3185865dc02688
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-on: https://review.coreboot.org/23141
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Instead of having the mainboards duplicate logic surrounding
LPDDR4 initialization provide helpers to do the heavy lifting.
It also handles the quirks of the FSP configuration which allows
the mainboard porting to focus on the schematic/design.
BUG=b:64395641
BRANCH=None
TEST=Verify "./util/abuild/abuild -p none -t google/zoombini -x -a"
compiles successfully.
Change-Id: I4a43ea121e663b866eaca3930eca61f30bb52834
Signed-off-by: Nick Vaccaro <nvaccaro@chromium.org>
Reviewed-on: https://review.coreboot.org/22204
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Stoneyridge related contents of 3rdparty/blobs/southbridge/amd/kern were
moved to 3rdparty/blobs/southbridge/amd/stoneyridge. Commit the new blob
to coreboot, and modify src/soc/amd/stoneyridge/Kconfig to use it.
BUG=b:69613465
TEST=Build and run kahlee.
Change-Id: I1784824dc7767c620e2fcbad7c6e5674934832ff
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/23125
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
This patch allows temperature sensors 1 and 2 to function by setting
their type to be thermistor instead of BJT.
Change-Id: I6491171eacc0c9848ba86ba7a62ec440226aae36
Signed-off-by: Renze Nicolai <renze@rnplus.nl>
Reviewed-on: https://review.coreboot.org/22922
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This patch adds the temperature sensor type device tree setting,
configured to be the default value as stated in the Fintek f71869ad
datasheet on page 60.
bit 7-4: reserved (0)
bit 3: T3_MODE 1 (default) = BJT, 0 = thermistor
bit 2: T2_MODE 1 (default) = BJT, 0 = thermistor
bit 1: T1_MODE 1 (default) = BJT, 0 = thermistor
bit 0: reserved (0)
This results in a default value of 0x0E
This change is needed to make sure behaviour does not change after
applying change 22935 which adds the temperature sensor type
devicetree configuration option
Change-Id: I42980988267621def6576f771f1d8a853500e867
Signed-off-by: Renze Nicolai <renze@rnplus.nl>
Reviewed-on: https://review.coreboot.org/22966
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This patch makes it possible to set the "Temperature Sensor Type Register"
at index 6Bh from the devicetree, allowing the use of thermistors instead of
BJT type sensors.
Register documentation (from page 60 of the F71869 datasheet):
6.6.25 Temperature Sensor Type Register - Index 6Bh
Bit 7-4: reserved
Bit 3: T3_MODE (0: thermistor, 1: BJT [default])
Bit 2: T2_MODE (0: thermistor, 1: BJT [default])
Bit 1: T1_MODE (0: thermistor, 1: BJT [default])
Bit 0: reserved
Change-Id: I6af0d93061ec49aec7a9181cdf7affd60fbdca73
Signed-off-by: Renze Nicolai <renze@rnplus.nl>
Reviewed-on: https://review.coreboot.org/22935
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested on Linux 4.13.14:
SuperIO resources show up as reserved in /proc/ioports and friends.
Change-Id: I0363816fe048579413f1325dcfc9a6a8a9e48123
Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Reviewed-on: https://review.coreboot.org/22835
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Add ACPI declarations to be incorporated into ACPI tables for
mainboards with this super I/O.
Tested on Intel NUC DCP847SKE, Linux 4.13.14.
Change-Id: Idb76b2e99e90a213e2695efc1afd4fa9069c134f
Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de>
Reviewed-on: https://review.coreboot.org/22808
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This fixes the bug that the LDNs on the affected SIO chips didn't get
configured, since the config mode wasn't entered.
Change-Id: Ic468847571e164e4e1280428f08fc067b724464e
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/23004
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Update FSP header files to match FSP v77_12
Following fields have been added in FSP-S UPD:
- SkipPunitInit (Skip P-unit Initialization)
- HgSubSystemId (Sub system Vendor ID VGA)
Change-Id: I6c4c2580b2d0d76038b495be31744c04cc0dc959
Signed-off-by: Srinidhi N Kaushik <srinidhi.n.kaushik@intel.com>
Reviewed-on: https://review.coreboot.org/22820
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
The Qemu q35 target doesn't support or needs Intel Firmware blobs so
it doesn't make sense to select that option on this hardware.
The result of this change will be that when changing the ROM chip
size, CBFS_SIZE will automatically fill the whole flash which is
desirable in this case.
Change-Id: I89b0c2a7b3e9c163ce4b4eb5b38ab5fa70ba3cfa
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/23090
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Grunt's devicetree dropped some entries when it was split from the
kahlee variant. This commit restores:
spd_addr_lookup - memory information for AGESA
dram_clear_on_reset - keeps DRAM contents on reset
uma_mode - needed for vbios
uma_size - needed for vbios
Change-Id: I1d8cdc97594867f1d706318370055087976a5104
Signed-off-by: Justin TerAvest <teravest@chromium.org>
Reviewed-on: https://review.coreboot.org/23099
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-by: Martin Roth <martinroth@google.com>
PMC and GPIO DWx definition is not identical, hence update that to
correct information. For cannonlake lp PCH, GPIO group C, group E and
group GPD is different for PMC GPIO_CFG and GPIO MISCCFG. Also add
function call to set up GPE routing in bootblock stage.
TEST=Boot up into OS, and manually check PMC GPE status
Change-Id: I1edb83edabc72e8a762b129cf51dcd936cd37ddf
Signed-off-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/22908
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Especially on ICH7 failing to do so results in i2c block read being
unusable. On ICH10 this problem doesn't manifest itself that much.
This moves disabling the watchdog reboot to the northbridge code like
i945 (even though it technically is southbridge stuff).
TESTED on Intel DG41WV: hacking on raminit is much nicer since no
need to do a hard power down for +4s are needed to clear the timeouts.
Change-Id: Icfd3789312704f61000a417f23a121d02d2e7fbe
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/22997
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Now that the AGESA binary is split into two sections load the
post-memory AGESA binary into ram. It needs to be an rmdoule
so that it can be relocated into ram.
agesawrapper_amdinitenv() entry
CBFS: 'VBOOT' located CBFS at [10000:cfd40)
CBFS: Locating 'AGESA_POST_MEM'
CBFS: Found @ offset 875c0 size 11c5e
Decompressing stage AGESA_POST_MEM @ 0xc757ffc0 (183452 bytes)
Loading module at c7580000 with entry c7580000. filesize: 0x2bafc
memsize: 0x2bb0d
Processing 1112 relocs. Offset value of 0xc7780000
AGESA call 00020001 using c75818fe
AGESA call 00020003 using c75818fe
Fch OEM config in INIT ENV Done
agesawrapper_amdinitenv() returned AGESA_SUCCESS
BUG=b:68141063,b:70714803
TEST=Booted kahlee.
Change-Id: Ic0454e0d6909cb34ae8be2f4f221152532754d61
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/22976
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
By splitting the binary files for platform initialization, the
post-memory code can be modified to stop executing in place (--xip).
This change creates two separate sections in CBFS for AGESA and loads
the appropriate file at the correct stage.
BUG=b:68141063
TEST=Booted kahlee with split agesa enabled.
Change-Id: I2fa423df164037bc3738476fd2a34522df279e34
Signed-off-by: Justin TerAvest <teravest@chromium.org>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/22974
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
When running `make gitconfig` on a freshly cloned repository, the script
will wait for user input without a prompt in a call to `sed`, caused by
a spurious newline introduced in commit 9ab8ae6a (util/gitconfig: Make
gitconfig a bash script).
Change-Id: I2aa722c052d24dcffa9688df09bcf8dc767bd0b6
Signed-off-by: Alex Thiessen <alex.thiessen.de+coreboot@gmail.com>
Reviewed-on: https://review.coreboot.org/23059
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
On debian systems, /bin/sh is `dash` which has built-in `echo` always
interpreting escape sequences such as '\n'. The pre-commit hook uses
the built-in for piping diff to checkpatch, interpreting the diff's
escape sequences in the process and leading to false negatives
and preventing commits despite conformance.
Use `printf` instead of `echo` when handling diff content. The bug was
introduced in commit ef869305 (util/gitconfig: update pre-commit
script).
Change-Id: I37edfe7b32721cb63d99299563cb11f26082c9a9
Signed-off-by: Alex Thiessen <alex.thiessen.de+coreboot@gmail.com>
Reviewed-on: https://review.coreboot.org/23070
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Files agesawrapper.c and heapmanager.c have several non-conformity with
coreboot standards, including lines longer than 80 characters, use of
"} else {" after a return and wrong comment block formatting. Fix all
such issues, so that it passes commit tests.
BUG=b:69262110
TEST=Build with no error gardenia and kahlee (no code change, just file
formatting).
Change-Id: Iefe741cd62bc41a7975c3dd10ac9355352de3abb
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/22823
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
The spd size of DDR4 is 512, but the size empty.spd.hex is 256.
With empty.spd.hex and DDR4, it will cause mainboard_get_spd_data
loads spd data incorrectly due to the offset is wrong.
Change-Id: Iea3f216898525a2a602fabf1835c8a0c1245ee57
Signed-off-by: Kane Chen <kane.chen@intel.com>
Reviewed-on: https://review.coreboot.org/23038
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This change is to enable SataPwrOptEnable.
With this change, we no longer see SError message in kernel during
suspend_stress_test.
BUG=b:70491485
Change-Id: Ieb991f6889c5ff3181a670bc7702314049fa983c
Signed-off-by: Kane Chen <kane.chen@intel.com>
Reviewed-on: https://review.coreboot.org/23019
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Nick Vaccaro