The use of the DDR driver as well as early I2C support is
enabled for board initialising their memory through SPD EEPROM
data.
A SOC specific function returning the DDR bus frequency
is added for the DDR driver to translate DDR timings to
register values.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Because the port count is different between the MPC8544 and
existing CPU support, the Ethernet port count is defined on
a per CPU basis.
Accordingly, the TBI PHY initialisation code is updated.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Definitions are added to support the mpc8544 sOC.
The function returning the I2C bus frequency is updated
to take into account the mpc8544 specific clock ratio.
A mininal GPIO API is added to enable and set the GPIO
out pins.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
If drivers want to fixup their specific instance they need some context
to know which instance they have to fixup.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
For the MPC85xx family of SOCs Linux expects any boot firmware
information to be passed in the first 64MiB of memory. This adds support
to ensure that the device tree is relocated to a valid location if it is
outside that address range.
For the other SOC family currently present in the ppc architecture, the
default is not to relocate as at Linux startup the virtual address
equals the physical address.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds support for populating derived properties of the mpc85xx SOC
which are not typically included in the dtb directly.
This update is based on U-Boot code from common/fdt_support.c
and arch/powerpc/cpu/mpc85xx/fdt.c - version git-2b26201.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
With multiboard support the compiletime generated BOARDINFO string
gets more and more meaningless. This removes it from Kconfig and
replaces it with a variable that can be set at boardlevel.
Also many boards have a standard setting for the hostname in the
environment. This patch also moves the standard to C code by calling
barebox_set_hostname().
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The chip select 0 (boot flash) registers are updated by the board
specific code as it is not done by the cpu early initialisation
any more.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The early initialisation of chip select 0 (boot flash) is removed
from cpu initialisation. This removes the dependency on board
base address definition.
Consequently, cpu_init_f is not called in the start-up code but
added to the init call list as cpu_init_r. Also the file
arch/ppc/mach-mpc85xx/fsl_lbc.c is deleted.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Early I2C support is introduced to read SPD data from memory
modules prior to the loading of the I2C driver.
This code is based on the equivalent file fsl_i2c.c in directory
drivers/i2c from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
These files are the driver interface to handle the memory
initialisation from reading the SPD data to writing the memory
controller registers.
This code is based on the equivalent files main.c in directory
arch/powerpc/cpu/mpc8xxx/ddr and ddr-gen2.c in directory
arch/powerpc/cpu/mpc85xx. Both are from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The functions in this file calculate and store the value for each
register of the memory controller.
This code is based on the equivalent file in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit adds functions to calculate clock cycles, configure the
LAW registers and populate board memory options.
This code is based on the equivalent files in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This code calculates the DIMM characteritics i.e DIMM
organization parameters and timings for DDR2 memory based on
SPD data.
It also provides a function to find out the lowest common DIMM
parameters to be used for all DIMMs.
This code is based on the equivalent files in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Structures are defined to record the common DIMM parameters
and memory options on a per DIMM basis.
This code is based on the equivalent files in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Definitions and structures have been added to record DIMM parameters
and configure memory options.
The code is based on the equivalent files in the directory
arch/powerpc/include/asm from U-boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit creates MDIO bus devices to separate the MDIO bus
abstraction from the Ethernet device initialisation.
It also updates the configuration of the P2020RDB ports.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Barebox of_find_node_by_path requires a node to be passed as start node
to start searching. Linux OF API does not pass this node and no current
user of it in barebox is passing anything else than the root node.
Therefore, we rename current function to of_find_node_by_path_from and
introduce a Linux OF API compatible of_find_node_by_path that always
passes the current root_node. Also, all current users of that function
are updated to reflect the API change.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
ppc does not implement these, so remove the prototypes and use
the ones from include/linux/string.h
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The I/O accessors in_bexx, out_bexx, in_lexx and out_lexx are updated
to the latest Linux version.
The patch is tested on a MPC8544 based board and solved I/O access
issues on I2C devices.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To prepare for an update of the I/O functions to the latest Linux
version, the indentation is fixed.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Without this patch after compiling barebox
for a PowerPC board we have 'git status'
output looking like this:
# Untracked files:
# (use "git add <file>..." to include in what will be committed)
#
# arch/ppc/boards/pcm030/barebox.lds
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This makes it possible to modify the tree in the handlers.
This is necessary because the initrd addresses are only
known inside the handlers, but not to the generic bootm
code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
CFI Flash is currently handled outside the mtd layer which makes it
a special case. Integrate it into mtd so that we get rid of this
special status.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add barebox-data section in arm branch to get complete
barebox regions in sdram regions tree.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Change function remap_range in arm architecture to make it
global accessable. For example command 'memtest' can change
pte flags to enable or disable cache.
Add dummy function for others architectures that doesn't
have mmu or pte support.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Barebox not contain symbol HAS_CFI, so remove all references to it.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch provides a global cleanup barebox Kconfig files. This includes
replacing spaces to tabs, formatting in accordance format, removing
extraneous lines and spaces. No functional changes.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The end boundary of each registers set may overlap with the start
of the next register set. Subtract 1 to the end boundary.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Support for both i2c busses on the p2020rdb board is added and the
configuration file is updated to add the I2C driver and commands.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A function to calculate the frequency divider and digital filter sampling rate
for the 85xx processors is added to the i2c-imx driver. Hence, this driver is
usable on IMX and 85xx machines.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This file is copied from Linux 2.6.39. It is added so that the P2020RDB
can still build.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In order to use the IMX i2c driver on the mpc85xx SOC, the file mach/clocks.h
is renamed mach/clock.h. Files using this header are updated accordingly.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The i2c-imx driver is able to support the I2C bus on the 85xx machines
with minor modifications. It already defines register offsets. Therefore,
this header file is no longer needed.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A function that returns the system bus frequency used to compute the i2c bus
frequency is added for future use.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Minimal support of the Ethernet interface on the P2020RDB board. Only
the eTSEC3 interface is supported.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The fsl_eth_init function maps the TSEC registers (MAC, TBI and
external PHY access registers). It also passes the PHY address and
TBI registers initialization values.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This update adds the GIANFAR driver along with the configuration
and build files.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
In view of the introduction of the GIANFAR Ethernet driver,
the mdio and gianfar base address are defined.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Some drivers call dma_inv_range() on buffers, on arm these buffers must
be cache line aligned. This patch introduces a generic dma_alloc,
dma_free. Archs can implement in their own functions in "asm/dma.h" and add a:
#define dma_alloc dma_alloc
#define dma_free dma_free
On all other archs the generic versions, which translate into xmalloc
and free are used.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is limited board support for the Freescale P2020RDB in single CPU
mode. The DDR is configured for a memory bus running at 667Mhz.
The system boots from NOR flash and provides the console at 115200
bauds, no other drivers are included.
Finally, the PPC Kconfig and make file make the building of
the P2020RDB platform firmware possible.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Kconfig and Makefile allow to include the 85xx cpu support in the
compilation process.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
_text_base assignment has been removed earlier from lib/board.c
for the mpc5xxx.
For the 85xx, _text_base is set to where the firmware relocates
in memory as passed by the function input variable.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds initialization functions used by the e500v2 start-up code
and board specific code (L2 cache initialization).
Other functions help identify the CPU or return the programmed memory size.
Finally, the Makefile and Kconfig file are added.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch contains functions that returns information on
the CPU and buses frequency (LBC, DDR, system).
It also includes the clock source driver.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch includes functions to initialize LAW registers and
the chip select 0 of the CPU.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch defines functions to set interrupt vector registers and
functions to handle hardware exceptions.
It also defines support functions to set and search TLBs.
Finally, the Makefile is added.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This is the first part of the start-up code. The source code origin is
U-boot and is slightly modified to have e500v2 CPU support in 32-bit
mode only.
It includes the power-up entry point, CPU initialization code and
exports definition for D-cache flush and I-cache invalidate.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
These header files are added to provide a minimal support to the
Freescale 85xx cpu to boot on a P2020RDB platform.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The trap relocation function trap_reloc can be used across several PPC
platforms and is added to the ppc library. Accordingly, the definition
of trap_reloc is removed from mach-mpc5xxx/start.S
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Following the MMIO primitives fix, the definitions of __raw_* function
is sourced from Linux and added.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
arch/ppc/Kconfig is reworked to make the configuration environment
architecture neutral. All MPC5200 configuration is moved to the
MPC5200 architecture specific configuration file. These modifications
are reflected in the PCM030 board support.
arch/ppc/Makefile compilation directives are updated in preparation
for the introduction of future cpus/machines.
lib/time.c is moved to the architecture specific directory and the
building instructions updated in the Make files. The file is
cleaned up of unused code.
The definition of L1_CACHE_... is updated and CACHELINE_SIZE is
defined in ppc/include/asm/cache.h for future use by the mpc85xx.
The file mach-mpc5xxx/pci_mpc5200.c and mach-mpc5xxx/start.S are
updated accordingly.
The declaration of search_exception_table is moved in
include/asm/common.h because it is used across architectures.
mach-mpc5xxx/traps.c is also updated to reflect this change.
The definition of exception in asm/ppc_asm.tmpl is updated for future
use by the mpc85xx. The file starts.S in mach-mpc5xxx is updated
accordingly.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The device resources are much smaller, the resource mechanism
revealed this because of overlapping devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This switches the bootm code to the new uimage code. Also
bootm can now handle other types of images than uImages.
Currently the only architecture making use of this is
arm which allows to boot zImages, raw images and barebox
images.
I intended to make a more bisectable series from this but
I failed becuase there are many dependencies and no matter
how I tried the patches grew bigger and and bigger. So I
decided to put this all in a single patch.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The device resources are much smaller, the resource mechanism
revealed this because of overlapping devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
All handlers used to just relocate the image without any checks, so
we are doomed if we write outside of SDRAM or will overwrite ourselves.
Move the relocation up to the generic part where we have a chance
of catching these issues.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We never had interrupt support in barebox and we have no plans to
add interrupt support. Even if we do I doubt the current fragments
of irq support are helpful, so remove them.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When building sandbox with ccache, one would hit warnings such as:
warning: 'struct mmsghdr' declared inside parameter list
on random files; a way to reproduce this issue is to build a simple
file doing just:
#include <sys/socket.h>
int main(void) {
return 0;
}
gcc -Wall -P -c -o foo foo.c
But actually the -P flag is only useful when generating non-C files,
such as linker scripts in the case of barebox. Removing the -P flag
from all the gcc invocations, except when generating .lds files makes
the warning go away. It turns out that this is what
linux/scripts/Makefile.build also does nowadays.
Signed-off-by: Loïc Minier <loic.minier@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
/dev/self0 and /dev/env0 are in the last MB of nor flash. The
offset depends on the size of the flash, so detect this at
runtime.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We introduced several new functions to ease our life
on ppc, use themn on the pcm030:
- setup iomux and bus clocks in board code
- add sdram memory according to detected size
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The old startup process consisted of several CFG_LOWBOOT,
CFG_RAMBOOT ifdeffery which I do not understand. So remove
all this and replace it with:
- put the entry point for second stage loaders to offset 0x0
so that we can do a go /dev/ram0 to start a second barebox
- When we come from the reset vector assume MBAR is at 0x80000000
- When we come from the second stage entry assume that
SPR 311 is in sync with the current MBAR address.
- Switch MBAR to 0xf0000000 and we are done.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This has never been used in barebox and likely is incomplete
and bitrotted over time, so remove it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To allow for some generic io accessors introduce io.h and use
this instead of asm/io.h throughout the tree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add a helper function for boards to register their memory
devices. This makes the board code smaller and also helps
getting rid of map_base and struct memory_platform_data.
And switch all of the memory to it
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
we keep struct memory_platform_data for now on we will switch off the memories
resources to struct resource
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
this will avoid __bswapsi2 issue see with gcc 4.5.1
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
include/common.h declares this as "unsigned long addr", so we unify it.
This also silences a doxygen warning.
Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The function names do not make it clear what return value
is expected and do not save a single line of code. Put
the code inline and unbreak the wrong checks introduced
with a3c1e5d888.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Eric Bénard <eric@eukrea.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
