Allows to reuse the clk gate code within other clocks.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Taken from the Linuxkernel with some small adjustments for barebox.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
On MXS we need to poll the busy bit when changing a clock rate, but only
when the parent clocks are enabled. This exposes the already present
function clk_is_enabled which is suitable for this job.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds several missing includes to files under include/ which
we relied on being included implicitly.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
this fix the problems introduced when detecting non ONFI flashes in
commit 4c2bdc8728
"nand_base: detect more ONFI flash"
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This allows us to better detect whether a clk is enabled or not.
- If we can ask a clk, ask it. If it's enabled, go on and ask parents
- If we can't ask it, but it can be enabled, depend on the enable_count.
if it's positive, go on and ask parents
- If we can't ask it and it cannot be enabled, assume it is enabled
and ask parents.
This makes the CLK_ALWAYS_ENABLED unnecessary, since the fixed clk now
always returns 1 in its is_enabled callback.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds helpers to define resources, such as
DEFINE_RES_NAMED, DEFINE_RES_MEM and DEFINE_RES_MEM_NAMED.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds generic memory-mapped GPIO controller support.
Code taken from Linux Kernel and adopted for barebox.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This file is present in current kernels. In order to get closer
to current mtd support introduce it for barebox aswell.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
While erasing bad blocks is a potentially dangerous operation
it is sometimes needed during development or when some foreign
code has touched the flash.
This patch adds a device parameter 'erasebad' to allow erasing
bad blocks. Since this is not wanted during production this is
behind a Kconfig option.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This allows us to have some NAND specific stuff during registration,
like for example adding NAND specific device parameters.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The roundup_pow_of_two function is making use of __roundup_pow_of_two
when the call to __builtin_constant_p fails, which is not implemented in
barebox.
Copied the code from Linux log2.h header.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
do not try to read the status in force mode
the link is up
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Do not write pages which only contain 0xff. UBI expects pages which
seem empty to be writable. This got lost with:
| commit 3139c3e9a6
| Author: Sascha Hauer <s.hauer@pengutronix.de>
| Date: Thu Nov 29 11:16:40 2012 +0100
|
| mtd core: call driver write function with complete buffer
|
| mtd->write is supposed to loop around pages internally, no need
| to do this in mtd_write. This fixes a huge write performance drop
| with the m25p80 driver when it was converted to a mtd driver recently.
| Since mtd->writesize is 1 for this driver mtd_write ended up doing
| single byte writes on the flash.
Introduce mtd_all_ff as a global function since UBI currently has its own
implementation.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
form linux 3.8
so you can have part by num or name
not by GUID as this is a non human reading name
`---- ffe08000.sata
`---- 0x00000000-0x3fffffff: /dev/ata0
`---- 0x00100000-0x063fffff: /dev/ata0.0
`---- 0x00100000-0x063fffff: /dev/ata0.boot
`---- 0x06400000-0x3fefffff: /dev/ata0.1
`---- 0x06400000-0x3fefffff: /dev/ata0.linux
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
need it by upcoming EFI GPT support
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The Kernel has mtd_read, mtd_write, mtd_erase and mtd_block_markbad.
Add these functions to barebox aswell to make future mtd synchronizations
with the kernel easier.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
so we can use it on vexpress to detect the hardware mapping
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
detect the cpu model to dynamise the periphs mapping
currently only tested on qemu but should work on real hardware
Cortex-A9
if you use 1GiB of ram you can run the same barebox on Cortex-A15 or Cortex-A9
otherwise use vexpress_ca9_defconfig where the TEXT_BASE is at 0x63f00000
when we will add the relocation support this defconfig will be drop
qemu/arm-softmmu/qemu-system-arm -M vexpress-a9 -m 1024 -smp 1 -kernel build/vexpress/barebox -pflash build/vexpress/flash0 -nographic
Cortex-A15
qemu/arm-softmmu/qemu-system-arm -M vexpress-a15 -m 1024 -smp 1 -kernel build/vexpress/barebox -pflash build/vexpress/flash0 -nographic
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When starting a network device wait until the link is up. Otherwise
autobooting does not work with little timeout and several attempts
have to be made until the network is finally up.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Current barebox clk framework allow disable any clock
and there is no means to prevent that.
But there are the clocks that can't be disabled
by software at all.
This patch allow registration of a clock immune to clk_disable().
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
so we now create the cdev via mtd
This will also simplify sync with linux
to avoid the m25p8000 or m25p00 the cdev is still named name m25p and the
drivers m25p80
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>