| Age | Commit message (Collapse) | Author |
|---|
|
Add implementation of the GPIO API defined in src/include/gpiolib.h.
Also, clean up the GPIO driver, make it use pointers instead of
integers for register address.
This requires a touch in the SPI driver, where the CS GPIO is toggled
and in the board function where it enables USB interface.
BUG=chrome-os-partner:30489
TEST=tested with the following patches, observed proto0 properly read
the board ID.
Original-Change-Id: I0962947c6bb32a854ca300752d259a48e9e7b4eb
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/210115
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit e951f735001509d135cc61530ed0eecb5fc31a85)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I8a612dce000931835054086c1b02ebfc43dc57d2
Reviewed-on: http://review.coreboot.org/8718
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
|
|
The current spi_xfer() function sets the count in hardware and then
loops while waiting for the requested number of bytes to be sent or
received. However, the number of bytes to be transferred may exceed
the maximum count that can be programmed into the controller.
This patch re-factors spi_xfer() to split the low-level FIFO handling
portions for transmit/receive into their own functions to be called
by loops in spi_xfer() which will break large transfers into smaller
ones.
BUG=chrome-os-partner:30904
BRANCH=storm
TEST=built and booted with a >64KB payload on Storm
Original-Change-Id: I70743487996cf08cfc602449f2181a7fcd99bfa4
Original-Signed-off-by: David Hendricks <dhendrix@chromium.org>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/209838
Original-Reviewed-by: Trevor Bourget <tbourget@codeaurora.org>
Original-Tested-by: Trevor Bourget <tbourget@codeaurora.org>
(cherry picked from commit 5ec28de11f12c2438356f45ce978a17fbb603bf7)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I0033e0dd96006cfd30a7a4f5e5a052f677e05108
Reviewed-on: http://review.coreboot.org/8676
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
|
|
When the IPQ SPI driver was ported to coreboot, a few GPIO related
definitions ended up in a wrong include file. Move them to the proper
place and get rid of duplicated definition of GPIO_OUT.
BUG=chrome-os-partner:27784, chrome-os-partner:29871
TEST=proto0 still boots with the new firmware
Original-Change-Id: I4b06067a71c85efaf0e48f29e232f83fd1f725a8
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/205328
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Original-Reviewed-by: Trevor Bourget <tbourget@codeaurora.org>
(cherry picked from commit df73bb0023f5eaf5594ef41b3632c4402ebf126c)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I109e62e3bfc9bd15640ff697be7634f42435a3e4
Reviewed-on: http://review.coreboot.org/8058
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
|
|
A typical SPI operation consists of two phases - command and data
transfers. Command transfer is always from the host to the chip (i.e.
is going in the 'write' direction), data transfer could be either read
or write.
We don't want the receive FIFO to be operating while the command phase
is in progress. A simple way to keep the receive FIFO shut down is to
not to enable it until the command phase is completed.
Selective control of the receive FIFO allows to consolidate the
receive and transmit functions in a single spi_xfer() function, as it
happens in other SPI controller drivers.
The FIFO FULL and FIFO NOT EMPTY conditions are used to decide if the
next byte can be written or received, respectively. While data is
being received the 0xFF bytes are transmitted per each received byte,
to keep the SPI bus clocking.
The data structure describing the three GSBI ports is moved from the
.h file into .c file. A version of the clrsetbits macro is added to
work with integer addresses instead of pointers.
BUG=chrome-os-partner:27784
TEST=not yet, but with the res of the changes the bootblock loads and
starts the rombase section successfully.
Original-Change-Id: I78cd0054f1a8f5e1d7213f38ef8de31486238aba
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/197779
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit c101ae306d182bbe14935ee139a25968388d745a)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I7f3fd0524ec6c10008ff514e8a8f1d14a700732f
Reviewed-on: http://review.coreboot.org/7983
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
|
|
This brings in the banana_cs version of the SPI driver.
BUG=chrome-os-partner:27784
TEST=none
Original-Change-Id: Ie93ec8c962c26fff1f0a235516cd8a4062cab40b
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/194225
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
(cherry picked from commit 3cada6e4ed51a6d4f637aa31a1a836352a99d13d)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Change-Id: I0a58a4ddaf9375c22c9b2b249a2baa2c5538ba6c
Reviewed-on: http://review.coreboot.org/7982
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>
|
