Note, MT8183 didn't select HAVE_HARD_RESET before. So it might still
need an update.
Change-Id: Ic850f2775ada5e6e543ffb92aaa033b9209596f5
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/29051
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Refactor USB code which will be reused among similar SoCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: I06fefb4149a489be991e13ddf624082d11e31765
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/28786
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Refactor memory test code which will be reused among similar SoCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: I800aa9a73f0b4588f46a98c964e2794bdf04f09d
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/28436
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Joel Kitching <kitching@google.com>
Reviewed-by: Julius Werner <jwerner@google.com>
This patch changes the mapping of SRAM from non-secure to secure.
Without this patch, mmu_config_range() can not work when MMU is
enabled. The new config is still in non-secure cache since TTB section
is allocated in SRAM which is mapped as non-secure.
BUG=b:80501386
TEST=Boots correctly on Kukui and Elm
Change-Id: Ia5b8716cfcca64d1d716a177225ea2f7ac2920a6
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27974
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Refactor SPI code which will be reused amon similar SOCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: If5a6c554dc8361e729cf5c464325b97b2bfb7098
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27497
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Refactor GPIO code which will be reused among similar SOCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: Icdd1f2a1dd1bd64a7218bf9c63bd4a0af1acbcc0
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27416
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Refactor PLL code which will be reused among similar SOCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: I11f044fbef93d4f5f4388368c510958d2b0ae66c
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27305
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Refactor MMU operation code which will be reused among similar SOCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: Id8173da0a02e57e863263fcd89c91a9c089e8a0f
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27349
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Move mtcmos code which can be reused into a common directory under
soc/mediatek.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: I92b138890424b4f4a68cdb00bf2326eef9cd87b7
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27029
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Refactor mtcmos code which will be reused among similar SOCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: Ibfd0a90f6eba3ed2e74a3fd54279c7645aa41774
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27028
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Move watchdog timer (WDT) code which can be reused into a common
directory under soc/mediatek.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: Icbeb04f775c3c0fdc18dd198df8591f5c4b6ddce
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27025
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Refactor watchdog timer (WDT) code which will be reused among similar
SOCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: I745c2f204924d9eee1941c0f3e9b6ba45cfb1958
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27024
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch moves uart, timer and cbmem code which can be reused into a
common directory under soc/mediatek.
BUG=b:80501386
BRANCH=none
TEST=the refactored code works fine on the new platform (with the rest
of the patches applied) and Elm platform
Change-Id: I5210149b324947ee90f1a481b42f0e2e1f7cfc25
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/26658
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
This patch refactor cbmem and timer code which will be reused among
similar SOCs.
BUG=b:80501386
BRANCH=none
TEST=the refactored code works fine on the new platform (with the rest
of the patches applied) and Elm platform
Change-Id: I397ebdc0c97c7616bd547022d2ce2a8f08f3c232
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/26881
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch fix whitespace and formating issues:
1. Using two spaces between code and single line comment.
2. No space after asterisk.
3. Fix checkpatch error.
4. Remove spaces after cast operators.
BUG=b:80501386
BRANCH=none
TEST=the refactored code works fine on the new platform (with the rest
of the patches applied) and Elm platform
Change-Id: Ib36c99b141c94220776fab606eb36af8f64f65bb
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/26880
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Use of device_t has been abandoned in ramstage.
Change-Id: Ifadb894f98ce60cf0778de7fbcec67d125e48fd6
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26538
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
On a second look broadcom/cygnus and imgtec/pistachio appear to
support full duplex. Therefore, remove the use of spi_xfer_two_vectors().
For mediatek/mt8173 and qualcomm/ipq40xx, the driver is written in such
a way that it does not support full duplex. Remove the use of
spi_xfer_two_vectors() and explicitly error out when a full duplex
transaction is requested.
Change-Id: I8689bc9bb2b27563d25e9f165487d38881c0b059
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/25742
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The rationale is to allow the mainboard to override the default
baudrate for instance by sampling GPIOs at boot.
A new configuration option is available for mainboards to select
this behaviour. It will then have to define the function
get_uart_baudrate to return the computed baudrate.
Change-Id: I970ee788bf90b9e1a8c6ccdc5eee8029d9af0ecc
Signed-off-by: Julien Viard de Galbert <jviarddegalbert@online.net>
Reviewed-on: https://review.coreboot.org/23713
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
`NULL` already has that type in coreboot.
```
src/include/stddef.h:#define NULL ((void *)0)
```
Change-Id: I73aeaef178be8779020c436732952aa732e90c46
Reported-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/22296
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Make the format of two multi-line comments compliant with the coding
style.
Change-Id: I8bc7b1eb175957b76ca19acdcb29b06ae86429b4
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/22279
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
There have been discussions about removing this since it does not seem
to be used much and only creates troubles for boards without defaults,
not to mention that it was configurable on many boards that do not
even feature uart.
It is still possible to configure the baudrate through the Kconfig
option.
Change-Id: I71698d9b188eeac73670b18b757dff5fcea0df41
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/19682
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Split `i2c.h` into three pieces to ease reuse of the generic defi-
nitions. No code is changed.
* `i2c.h` - keeps the generic definitions
* `i2c_simple.h` - holds the current, limited to one controller driver
per board, devicetree independent I2C interface
* `i2c_bus.h` - will become the devicetree compatible interface for
native I2C (e.g. non-SMBus) controllers
Change-Id: I382d45c70f9314588663e1284f264f877469c74d
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20845
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Our current struct for I2C segments `i2c_seg` was close to being compa-
tible to the Linux version `i2c_msg`, close to being compatible to SMBus
and close to being readable (e.g. what was `chip` supposed to mean?) but
turned out to be hard to fix.
Instead of extending it in a backwards compatible way (and not touching
current controller drivers), replace it with a Linux source compatible
`struct i2c_msg` and patch all the drivers and users with Coccinelle.
The new `struct i2c_msg` should ease porting drivers from Linux and help
to write SMBus compatible controller drivers.
Beside integer type changes, the field `read` is replaced with a generic
field `flags` and `chip` is renamed to `slave`.
Patched with Coccinelle using the clumsy spatch below and some manual
changes:
* Nested struct initializers and one field access skipped by Coccinelle.
* Removed assumption in the code that I2C_M_RD is 1.
* In `i2c.h`, changed all occurences of `chip` to `slave`.
@@ @@
-struct i2c_seg
+struct i2c_msg
@@ identifier msg; expression e; @@
(
struct i2c_msg msg = {
- .read = 0,
+ .flags = 0,
};
|
struct i2c_msg msg = {
- .read = 1,
+ .flags = I2C_M_RD,
};
|
struct i2c_msg msg = {
- .chip = e,
+ .slave = e,
};
)
@@ struct i2c_msg msg; statement S1, S2; @@
(
-if (msg.read)
+if (msg.flags & I2C_M_RD)
S1 else S2
|
-if (msg.read)
+if (msg.flags & I2C_M_RD)
S1
)
@@ struct i2c_msg *msg; statement S1, S2; @@
(
-if (msg->read)
+if (msg->flags & I2C_M_RD)
S1 else S2
|
-if (msg->read)
+if (msg->flags & I2C_M_RD)
S1
)
@@ struct i2c_msg msg; expression e; @@
(
-msg.read = 0;
+msg.flags = 0;
|
-msg.read = 1;
+msg.flags = I2C_M_RD;
|
-msg.read = e;
+msg.flags = e ? I2C_M_RD : 0;
|
-!!(msg.read)
+(msg.flags & I2C_M_RD)
|
-(msg.read)
+(msg.flags & I2C_M_RD)
)
@@ struct i2c_msg *msg; expression e; @@
(
-msg->read = 0;
+msg->flags = 0;
|
-msg->read = 1;
+msg->flags = I2C_M_RD;
|
-msg->read = e;
+msg->flags = e ? I2C_M_RD : 0;
|
-!!(msg->read)
+(msg->flags & I2C_M_RD)
|
-(msg->read)
+(msg->flags & I2C_M_RD)
)
@@ struct i2c_msg msg; @@
-msg.chip
+msg.slave
@@ struct i2c_msg *msg; expression e; @@
-msg[e].chip
+msg[e].slave
@ slave disable ptr_to_array @ struct i2c_msg *msg; @@
-msg->chip
+msg->slave
Change-Id: Ifd7cabf0a18ffd7a1def25d1d7059b713d0b7ea9
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20542
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
There are many good reasons why we may want to run some sort of generic
callback before we're executing a reset. Unfortunateley, that is really
hard right now: code that wants to reset simply calls the hard_reset()
function (or one of its ill-differentiated cousins) which is directly
implemented by a myriad of different mainboards, northbridges, SoCs,
etc. More recent x86 SoCs have tried to solve the problem in their own
little corner of soc/intel/common, but it's really something that would
benefit all of coreboot.
This patch expands the concept onto all boards: hard_reset() and friends
get implemented in a generic location where they can run hooks before
calling the platform-specific implementation that is now called
do_hard_reset(). The existing Intel reset_prepare() gets generalized as
soc_reset_prepare() (and other hooks for arch, mainboard, etc. can now
easily be added later if necessary). We will also use this central point
to ensure all platforms flush their cache before reset, which is
generally useful for all cases where we're trying to persist information
in RAM across reboots (like the new persistent CBMEM console does).
Also remove cpu_reset() completely since it's not used anywhere and
doesn't seem very useful compared to the others.
Change-Id: I41b89ce4a923102f0748922496e1dd9bce8a610f
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/19789
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This is in preparation to get rid of the strong spi_setup_slave
implemented by different platforms.
BUG=b:38430839
Change-Id: Ib0d6e4e8185ce1285b671af5ebcead1d42e049bc
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19770
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Define a new spi_flash_ops structure, move all spi flash operations to
this structure and add a pointer to this structure in struct spi_flash.
BUG=b:38330715
Change-Id: I550cc4556fc4b63ebc174a7e2fde42251fe56052
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19757
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1. Rename __spi_flash_probe to spi_flash_generic_probe and export it
so that drivers can use it outside spi_flash.c.
2. Make southbridge intel spi driver use spi_flash_generic_probe if
spi_is_multichip returns 0.
3. Add spi_flash_probe to spi_ctrlr structure to allow platforms to
provide specialized probe functions. With this change, the specialized
spi flash probe functions are now associated with a particular spi
ctrlr structure and no longer disconnected from the spi controller.
BUG=b:38330715
Change-Id: I35f3bd8ddc5e71515df3ef0c1c4b1a68ee56bf4b
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19708
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Pointer to spi_slave structure can be passed in as const to spi flash
probe functions since the probe functions do not need to modify the
slave properties.
BUG=b:38330715
Change-Id: I956ee777c62dbb811fd6ce2aeb6ae090e1892acd
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19707
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Instead of making all SPI drivers allocate space for a spi_flash
structure and fill it in, udpate the API to allow callers to pass in a
spi_flash structure that can be filled by the flash drivers as
required. This also cleans up the interface so that the callers can
maintain and free the space for spi_flash structure as required.
BUG=b:38330715
Change-Id: If6f1b403731466525c4690777d9b32ce778eb563
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19705
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
spi_crop_chunk is a property of the SPI controller since it depends
upon the maximum transfer size that is supported by the
controller. Also, it is possible to implement this within spi-generic
layer by obtaining following parameters from the controller:
1. max_xfer_size: Maximum transfer size supported by the controller
(Size of 0 indicates invalid size, and unlimited transfer size is
indicated by UINT32_MAX.)
2. deduct_cmd_len: Whether cmd_len needs to be deducted from the
max_xfer_size to determine max data size that can be
transferred. (This is used by the amd boards.)
Change-Id: I81c199413f879c664682088e93bfa3f91c6a46e5
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/19386
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Tested-by: coreboot org <coreboot.org@gmail.com>
The MT817x display output pipeline can be configured to drive an 8-lane
MIPI/DSI panel using "dual DSI" mode. For the "dual DSI" video data path,
the UFO block is configured to reorder the data stream into left and right
halves which are then sent by the SPLIT1 block to the DSI0 and DSI1
respectively. The DSI0 and DSI1 outputs are then synchronously clocked at
half the nominal data rate by their respective MIPI_TX0/MIPI_TX1 phys.
Also, update the call sites in oak mainboard to avoid build breakage.
BRANCH=none
BUG=b:35774871
TEST=Boot Rowan in developer mode and see output on the panel
Change-Id: Id47dfd7d9e98689b54398fc8d9142336b41dc29f
Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-on: https://review.coreboot.org/19361
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner <jwerner@chromium.org>
This patch enables TPM2 using cr50 over I2C for the Rowan board, and
adds an mt8173 specific TPM IRQ polling function. The function relies on
the appropriate EINT input configured to trigger the ready status on
the rising edge.
The cr50 TPM is on I2C address 0x50.
The cr50 interrupt GPIO is also made available for use by depthcharge
via the coreboot tables.
BRANCH=none
BUG=b:36786804
TEST=Boot rowan w/ serial enabled, verify coreboot and depthcharge are
configured to use IRQ flow control when talking to the Cr50 TPM.
Change-Id: If6cdd0e39e4ac86538f27f322c55c329179ee084
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-on: https://review.coreboot.org/19364
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner <jwerner@chromium.org>
Add basic support to configure GPIOs to poll for external interrupts
(EINT).
BRANCH=none
BUG=b:36786804
TEST=Boot rowan w/ serial enabled, verify coreboot and depthcharge are
configured to use IRQ flow control when talking to the Cr50 TPM.
Change-Id: I9d52591661a5a74ec1fd9a081f606f0a08a3a6ab
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-on: https://review.coreboot.org/19362
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins)
This patch attempts to finish the separation between CONFIG_VBOOT and
CONFIG_CHROMEOS by moving the remaining options and code (including
image generation code for things like FWID and GBB flags, which are
intrinsic to vboot itself) from src/vendorcode/google/chromeos to
src/vboot. Also taking this opportunity to namespace all VBOOT Kconfig
options, and clean up menuconfig visibility for them (i.e. some options
were visible even though they were tied to the hardware while others
were invisible even though it might make sense to change them).
CQ-DEPEND=CL:459088
Change-Id: I3e2e31150ebf5a96b6fe507ebeb53a41ecf88122
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/18984
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This enables some required Kconfig options when CONFIG_CHROMEOS is set.
Change-Id: I290902746c1ea19c8bcb69540e34fde09abb9adf
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-on: https://review.coreboot.org/18448
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner <jwerner@chromium.org>
SPI_ATOMIC_SEQUENCING was added to accomodate spi flash controllers with
the ability to perform tx and rx of flash command and response at the
same time. Instead of introducing this notion at SPI flash driver layer,
clean up the interface to SPI used by flash.
Flash uses a command-response kind of communication. Thus, even though
SPI is duplex, flash command needs to be sent out on SPI bus and then
flash response should be received on the bus. Some specialized x86
flash controllers are capable of handling command and response in a
single transaction.
In order to support all the varied cases:
1. Add spi_xfer_vector that takes as input a vector of SPI operations
and calls back into SPI controller driver to process these operations.
2. In order to accomodate flash command-response model, use two vectors
while calling into spi_xfer_vector -- one with dout set to
non-NULL(command) and other with din set to non-NULL(response).
3. For specialized SPI flash controllers combine two successive vectors
if the transactions look like a command-response pair.
4. Provide helper functions for common cases like supporting only 2
vectors at a time, supporting n vectors at a time, default vector
operation to cycle through all SPI op vectors one by one.
BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully
Change-Id: I4c9e78c585ad95c40c0d5af078ff8251da286236
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17681
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Change-Id: Ic1d1b85a1d7e85b555a93b3a0b55fe310b26e34a
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Found-by: Coverity Scan #1353362
Reviewed-on: https://review.coreboot.org/17875
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Commit 36b81af (spi: Pass pointer to spi_slave structure in
spi_setup_slave) changes the way spi_setup_slave handles the spi_slave
structure. Instead of expecting spi controller drivers to maintain
spi_slave structure in CAR_GLOBAL/data section, caller is expected to
manage the spi_slave structure. This requires that spi_flash drivers
maintain spi_slave structure and flash probe function needs to make a
copy of the passed in spi_slave structure.
This change fixes the regression on Lenovo X230 and other mainboards.
Change-Id: I0ad971eecaf3bfe301e9f95badc043193cc27cab
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17728
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Iru Cai <mytbk920423@gmail.com>
1. Define a new structure spi_ctrlr that allows platforms to define
callbacks for spi operations (claim bus, release bus, transfer).
2. Add a new member (pointer to spi_ctrlr structure) in spi_slave
structure which will be initialized by call to spi_setup_slave.
3. Define spi_claim_bus, spi_release_bus and spi_xfer in spi-generic.c
which will make appropriate calls to ctrlr functions.
BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully
Change-Id: Icb2326e3aab1e8f4bef53f553f82b3836358c55e
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17684
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
For spi_setup_slave, instead of making the platform driver return a
pointer to spi_slave structure, pass in a structure pointer that can be
filled in by the driver as required. This removes the need for platform
drivers to maintain a slave structure in data/CAR section.
BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully
Change-Id: Ia15a4f88ef4dcfdf616bb1c22261e7cb642a7573
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17683
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
