This patch fixes ppc4xx related printf format warning. Those warnings are
now visible since patch dc4b0b38d4
[Fix printf errors.] by Andrew Klossner has been applied. Thanks, this is
really helpful.
Signed-off-by: Stefan Roese <sr@denx.de>
Newer PPC's like 440SPe, 460EX/GT can be equipped with more than 2GB of SDRAM.
To support such configurations, we "only" map the first 2GB via the TLB's. We
need some free virtual address space for the remaining peripherals like, SoC
devices, FLASH etc.
Note that ECC is currently not supported on configurations with more than 2GB
SDRAM. This is because we only map the first 2GB on such systems, and therefore
the ECC parity byte of the remaining area can't be written.
Signed-off-by: Stefan Roese <sr@denx.de>
This change helps with better handling with others
Xilinx based platform.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stefan Roese <sr@denx.de>
This patch fixes a bug where the 460EX/GT PCIe UTLSET1 register was
configured incorrectly. Thanks to Olga Buchonina from AMCC for pointing
this out.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch implements a fix provided by AMCC so that the lockup upon
simultanious traffic on AHB USB OTG, USB 2.0 and SATA doesn't occur
anymore:
Set SDR0_AHB_CFG[A2P_INCR4] (bit 24) and clear SDR0_AHB_CFG[A2P_PROT2]
(bit 25) for a new 460EX errata regarding concurrent use of AHB USB OTG,
USB 2.0 host and SATA.
This errata is not officially available yet. I'll update the comment
to add the errata number later.
Signed-off-by: Stefan Roese <sr@denx.de>
As pointed out by Guennadi Liakhovetski (thanks), pin2 is already shifted
left by one. So the additional shift is bogus.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch changes the return type of initdram() from long int to phys_size_t.
This is required for a couple of reasons: long int limits the amount of dram
to 2GB, and u-boot in general is moving over to phys_size_t to represent the
size of physical memory. phys_size_t is defined as an unsigned long on almost
all current platforms.
This patch *only* changes the return type of the initdram function (in
include/common.h, as well as in each board's implementation of initdram). It
does not actually modify the code inside the function on any of the platforms;
platforms which wish to support more than 2GB of DRAM will need to modify
their initdram() function code.
Build tested with MAKEALL for ppc, arm, mips, mips-el. Booted on powerpc
MPC8641HPCN.
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
We use upper case letters for the AMCC processor defines (like
CONFIG_440SPE) in U-Boot. So the 440SPe is labeled CONFIG_440SPE and
not CONFIG_440SPe. This patch fixes the last misspelled config options.
Signed-off-by: Stefan Roese <sr@denx.de>
Historically the 405 U-Boot port had a dram_init() call in early init
stage. This function was still called from start.S and most of the time
coded in assembler. This is not needed anymore (since a long time) and
boards should implement the common initdram() function in C instead.
This patch now removed the dram_init() call from start.S and removes the
empty implementations that are scattered through most of the 405 board
ports. Some older board ports really implement this dram_init() though.
These are:
csb272
csb472
ERIC
EXBITGEN
W7OLMC
W7OLMG
I changed those boards to call this assembler dram_init() function now
from their board specific initdram() instead. This *should* work, but please
test again on those platforms. And it is perhaps a good idea that those
boards use some common 405 SDRAM initialization code from cpu/ppc4xx at
some time. So further patches welcome here.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch makes the common 4xx ECC code really usable on 440GP style
platforms.
Since the IBM DDR controller used on 440GP/GX/EP/GR is not register
compatible to the IBM DDR/2 controller used on 405EX/440SP/SPe/460EX/GT
we need to make some processor dependant defines used later on by the
driver.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch changes the kilauea and kilauea_nand (for NAND booting)
board port to not use a board specific DDR2 init routine anymore. Now
the common code from cpu/ppc4xx is used.
Thanks to Grant Erickson for all his basic work on this 405EX early
bootup.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch removes all SDRAM related defines from the PPC4xx headers
ppc405.h and ppc440.h. This is needed since now some 405 PPC's use
the same SDRAM controller as 440 systems do (like 405EX and 440SP).
It also introduces new defines for the equipped SDRAM controller based on
which PPC variant is used. There new defines are:
used on 405GR/CR/EP and some Xilinx Virtex boards.
used on 440GP/GX/EP/GR.
used on 440EPx/GRx.
used on 405EX/r/440SP/SPe/460EX/GT.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch consolidates the 405 and 440 parts of the NAND booting code
selected via CONFIG_NAND_SPL. Now common code is used to initialize the
SDRAM by calling initdram() and to "copy/relocate" to SDRAM/OCM/etc.
Only *after* running from this location, nand_boot() is called.
Please note that the initsdram() call is now moved from nand_boot.c
to start.S. I experienced problems with some boards like Kilauea
(405EX), which don't have internal SRAM (OCM) and relocation needs to
be done to SDRAM before the NAND controller can get accessed. When
initdram() is called later on in nand_boot(), this can lead to problems
with variables in the bss sections like nand_ecc_pos[].
Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Scott Wood <scottwood@freescale.com>
This patch (Part 1 of 2):
* Rolls up a suite of changes to enable correct primordial stack and
global data handling when the data cache is used for such a purpose
for PPC40x-variants (i.e. CFG_INIT_DCACHE_CS).
* Related to the first, unifies DDR2 SDRAM and ECC initialization by
eliminating redundant ECC initialization implementations and moving
redundant SDRAM initialization out of board code into shared 4xx
code.
* Enables MCSR visibility on the 405EX(r).
* Enables the use of the data cache for initial RAM on
both AMCC's Kilauea and Makalu and removes a redundant
CFG_POST_MEMORY flag from each board's CONFIG_POST value.
- Removed, per Stefan Roese's request, defunct memory.c file for
Makalu and rolled sdram_init from it into makalu.c.
With respect to the 4xx DDR initialization and ECC unification, there
is certainly more work that can and should be done (file renaming,
etc.). However, that can be handled at a later date on a second or
third pass. As it stands, this patch moves things forward in an
incremental yet positive way for those platforms that utilize this
code and the features associated with it.
Signed-off-by: Grant Erickson <gerickson@nuovations.com>
Signed-off-by: Stefan Roese <sr@denx.de>
This patch simplifies post_word_{load,store} by using the preprocessor
to eliminate redundant, copy-and-pasted code.
Signed-off-by: Grant Erickson <gerickson@nuovations.com>
This commit gets rid of a huge amount of silly white-space issues.
Especially, all sequences of SPACEs followed by TAB characters get
removed (unless they appear in print statements).
Also remove all embedded "vim:" and "vi:" statements which hide
indentation problems.
Signed-off-by: Wolfgang Denk <wd@denx.de>
This patch adds a default ft_board_setup() routine to the 4xx fdt code.
This routine is defined as weak and can be overwritten by a board specific
one if needed.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch fixes a problem with DIMMs that have 8 banks. Now the
MCIF0_MBxCF register will be setup correctly for this setup too.
This was noticed with the 512MB DIMM on Canyonlands/Glacier.
Signed-off-by: Stefan Roese <sr@denx.de>
Since the current dflush() implementation is know to have some problems
(as seem on lwmon5 ECC init) this patch removes it completely and replaces
it by using clean_dcache_range().
Tested on Katmai with ECC DIMM.
Signed-off-by: Stefan Roese <sr@denx.de>
On ppc405EP and ppc405GP (at least) the ebc is directly attached to the plb
and not to the opb. This patch will try to fixup /plb/ebc if /plb/opb/ebc
doesn't exist.
Signed-off-by: Markus Brunner <super.firetwister@gmail.com>
The PCIe root-complex/endpoint setup as configured via the "pcie_mode"
environment variable will now get passed to the Linux kernel by setting
the device_type property of the PCIe device tree node. For normal root-
complex configuration it will keep its defaults value of "pci" and for
endpoint configuration it will get changed to "pci-endpoint".
Signed-off-by: Stefan Roese <sr@denx.de>
dcache_enable() was missing for 440 and the patch
017e9b7925 ["allow ports to override bootelf
"] behavior uses this function.
Note: Currently the cache handling functions like
d/icache_disable/enable() are NOP's on 440. This may be changed in the
future.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch assigns the correct EBC clock for 405GP(r) CPUs
to PPC4xx_SYS_INFO structure. Without this patch U-Boot
uses an uninitialized EBC clock in its startup message.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Currently U-Boot crashes in ppc_4xx_eth_init on sequoia
with cache enabled (TLB Parity exeption). This patch
fixes the problem.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Currently U-Boot crashes on sequoia board in CPU POST if
cache is enabled (CONFIG_4xx_DCACHE defined). The cache
won't be disabled by change_tlb before CPU POST because
there is an insufficient adress range check since
CFG_MEM_TOP_HIDE was introduced. This patch tries to fix
this problem.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
This patch fixes a problem with the RGMII setup of the 460GT. The 460GT
has 2 RGMII instances and we need to configure the 2nd RGMII instance
for the EMAC2+3 channels.
Signed-off-by: Stefan Roese <sr@denx.de>
This bug was introduced with commit aee747f19b
which enabled CFG_4xx_GPIO_TABLE for PPC405 and unintentionally
disabled the setting of the emac noise filter bits for PPC405EP when CFG_4xx_GPIO_TABLE is set.
Signed-off-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
On PPC440EPx without a bootstrap I2C EEPROM, the PLL can be reconfigured
after startup to change the speed of the clocks. This patch adds the
option CFG_PLL_RECONFIG. If this option is set to 667, the CPU
initialization code will reconfigure the PLL to run the system with a CPU
frequency of 667MHz and PLB frequency of 166MHz, without the need for an
external EEPROM.
Signed-off-by: Mike Nuss <mike@terascala.com>
Acked-by: Stefan Roese <sr@denx.de>
This patch adds support for the AMCC Glacier 460GT eval board.
The main difference to the Canyonlands board are listed here:
- 4 ethernet ports instead of 2
- no SATA port
- no USB port
Currently EMAC2+3 are not working. This will be fixed in a later
release.
Signed-off-by: Stefan Roese <sr@denx.de>
460EX doesn't support a fixed bootstrap option to boot from 512 byte page
NAND devices. The only bootstrap option for NAND booting is option F for
2k page devices. So to boot from a 512 bype page device, the I2C bootstrap
EEPROM needs to be programmed accordingly.
This patch adds basic NAND booting support for the AMCC Canyonlands aval
board and also adds support to the "bootstrap" command, to enable NAND
booting I2C setting.
Tested with 512 byte page NAND device (32MByte) on Canyonlands.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch is a rework of the 4xx interrupt handling done while
adding the 460EX/GT support. Interrupts are needed on 4xx for the
EMAC driver.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch changes the physical addess parameter from 32bit to 64bit.
This is needed for 36bit 4xx platforms to access areas located
beyond the 4GB border, like SoC peripherals (EBC etc.).
Signed-off-by: Stefan Roese <sr@denx.de>
Every now and then a Sequoia board (or equivalent hardware) had
problems connecting to a Gigabit capable network interface.
There were differences in the PHY setup between Linux and U-Boot.
This patch fixes the problem. Apparently "remote fault" is being set,
which signals to some devices (on the other end of the cable) that a
fault has occurred, while other devices ignore it. I believe the RF bit
was causing the issue, but I removed T4 also, to match up with Linux.
Signed-off-by: Mike Nuss <mike@terascala.com>
The 405EZ only supports 512 bytes of rx-/tx-fifo EMAC sizes. But
currently 4k/2k is configured. This patch fixes this issue.
Thanks to Thomas Kindler <tkindler@lenord.de> for pointing this out.
Signed-off-by: Stefan Roese <sr@denx.de>
U-Boot crashes in the net loop if CONFIG_4xx_DCACHE is
enabled. To reproduce the problem ensure that 'ethrotate'
environment variable isn't set to "no" and then run
"tftp 200000 not_existent_file".
This patch tries to fix the issue.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc
will refuse to use load/store multiple insns; instead, it issues a
list of simple load/store instructions upon function entry and exit,
resulting in bigger code size, which in turn makes the build for a
few boards fail.
Use r2 instead.
Signed-off-by: Wolfgang Denk <wd@denx.de>
The current ndfc HW ECC implementation swaps the first two ECC bytes.
But the 4xx NDFC already uses the SMC (Smart Media Card) ECC ordering,
so this swapping in the HW ECC driver is bogus. This patch fixes this
problem and now really uses the SMC ECC byte order.
Thanks to Sean MacLennan for pointing this out.
Signed-off-by: Stefan Roese <sr@denx.de>
The privious 4xx POST implementation only supported storing the POST
WORD in OCM. Since we need to reserve the OCM on LWMON5 for the logbuffer
we need to store the POST WORD in some other non volatile location.
This patch adds CFG_POST_ALT_WORD_ADDR to specify an address for such
a location.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch adds support for locking the init-ram/stack in d-cache,
so that other regions may use d-cache as well
Note, that this current implementation locks exactly 4k of d-cache,
so please make sure that you don't define a bigger init-ram area. Take
a look at the lwmon5 440EPx implementation as a reference.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch allows the use of 4xx interrupt vector number defines
in board specific code outside cpu/ppc4xx.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Now that there are no board-specific versions of
"denali_core_search_data_eye()", the weak binding on the common version
can be removed.
Signed-off-by: Larry Johnson <lrj@acm.org>
On Katmai the complete auto-calibration somehow doesn't seem to
produce the best results, meaning optimal values for RQFD/RFFD.
This was discovered by GDA using a high bandwidth scope,
analyzing the DDR2 signals. GDA provided a fixed value for RQFD,
so now on Katmai "only" RFFD is auto-calibrated.
This patch also adds RDCC calibration as mentioned on page 7 of
the AMCC PowerPC440SP/SPe DDR2 application note:
"DDR1/DDR2 Initialization Sequence and Dynamic Tuning"
Signed-off-by: Stefan Roese <sr@denx.de>
This patch makes two additions to GPIO support:
First, it adds function gpio_read_in_bit() to read the a bit from the
GPIO Input Register (GPIOx_IR) in the same way that function
gpio_read_out_bit() reads a bit from the GPIO Output Register
(GPIOx_OR).
Second, it modifies function gpio_set_chip_configuration() to provide
an additional option for configuring the GPIO from the
"CFG_4xx_GPIO_TABLE".
According to the 440EPx User's Manual, when an alternate output is used,
the three-state control is configured in one of two ways, depending on
the particular output. The first option is to select the corresponding
alternate three-state control in the GPIOx_TRSH/L registers. The second
option is to select the GPIO Three-State Control Register (GPIOx_TCR) in
the GPIOx_TRSH/L registers, and set the corresponding bit in the
GPIOx_TCR register to enable the output. For example, the Manual
specifies configuring the GPIO00 Alternate 1 Signal (PreAddr07) to use
the alternate three-state control (first option), and specifies
configuring the GPIO32 Alternate 1 Signal (USB2OM0) with the output
enabled in the GPIOx_TCR register (second option).
Currently, gpio_set_chip_configuration() configures all alternate signal
outputs to use the first option. This patch allow the second option to
be selected by setting the "out_val" element in the table entry to
"GPIO_OUT_1". The first option is used when the "out_val" element is
set to "GPIO_OUT_0". Because "out_val" is not currently used when an
alternate signal is selected, and because all current GPIO tables set
"out_val" to "GPIO_OUT_0" for all alternate signals, this patch should
not change any existing configurations.
Signed-off-by: Larry Johnson <lrj@acm.org>
In an attmemt to clean up the 4xx start.S file, I removed the enabling
of the internal 405EP PCI arbiter. This is needed for multiple other
405EP platforms, like most of the esd 405EP. Now the internal PCI
arbiter is enabled again per default as it has been before.
Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
This patch adds SPD DDR2 support for the 440EPx ("Denali") SDRAM
controller. It should also work on the 440GRx. It is based on the DDR2
SPD code for the 440EP/440EPx, but makes no provision for DDR1 support.
This code has been tested on prototype Korat boards with three Kingston
DIMMS: 512 MiB ECC (one rank), 512 MiB non-ECC (one rank) and 1 GiB ECC
(two ranks). The Korat board has a single DIMM socket, but support has
been provided (though not tested) for boards with two DIMM sockets.
Signed-off-by: Larry Johnson <lrj@acm.org>
This patch creates a non-board-specific file for performing the SDRAM
data-eye search. It also adds ECC error checking to the test of valid
data on readback when ECC is enabled.
Signed-off-by: Larry Johnson <lrj@acm.org>
This patch adds a new switch: "CONFIG_PHY_DYNAMIC_ANEG". When this symbol
is defined, the PHY will advertise it's capabilities for autonegotiation
based on the capabilities shown in the PHY's status registers, including
1000BASE-X. When "CONFIG_PHY_DYNAMIC_ANEG" is not defined, the PHY will
advertise hard-coded capabilities, as before.
Signed-off-by: Larry Johnson <lrj@acm.org>
Now the cpu node setup ("timebase-frequency" and "clock-frequency") is
without using the absolute path to the cpu node. This makes it possible
to use this U-Boot version with both versions of cpu-node naming
"cpu@0" and the former "PowerPC,440EPx@0".
Signed-off-by: Stefan Roese <sr@denx.de>
ppc4xx clear_bss() fails if BSS segment size is not
divisible by 4 without remainder. This patch provides
fix for this problem.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
flush + invalidate_dcache_range() expect the start and stop+1 address.
So the stop address is the first address behind (!) the range.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
By using aliases in the dts file, the ethernet node fixup is
much easier with the recently added functions.
Please note that the dts file needs the aliases for this to work.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch update the 4xx fdt support. It enabled fdt booting
on the AMCC Kilauea and Sequoia for now. More can follow later
quite easily.
Signed-off-by: Stefan Roese <sr@denx.de>
Till now the UTL registers on 405EX were not initialized but left with
their default values. This patch new initializes some of the UTL
registers on 405EX.
Signed-off-by: Stefan Roese <sr@denx.de>
- Rename CFG_440_GPIO_TABLE to CFG_4xx_GPIO_TABLE
- Cleanup of the 4xx GPIO functions
- Move some GPIO defines from the cpu headers ppc405.h/ppc440.h into gpio.h
Signed-off-by: Stefan Roese <sr@denx.de>
This patch disables the 44x d-cache on 'usb start' and
reenables it on 'usb stop'. This should be seen as a
temporary fix until the generic usb-ohci driver can
life with d-cache enabled.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Stefan Roese <sr@denx.de>
This patch removes some redundant code and decrements the end
address of cache flush and invalidate by 1.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Most 4xx PPC capable of using an I2C bootrom for bootstrap setting
already print a line with the information which I2C bootrom is
used for bootstrap configuration. So we don't need this extra line
with "I2C boot EEPROM en-/dis-abled".
This patch also has a little code cleanup integrated.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch adds the CONFIG_4xx_DCACHE options to some SDRAM init files
and to the Sequoia TLB init code. Now the cache can be enabled on 44x
boards by defining CONFIG_4xx_DCACHE in the board config file. This
option will disappear, when more boards use is successfully and no
more known problems exist.
This is tested successfully on Sequoia and Katmai. The only problem that
needs to be fixed is, that USB is not working on Sequoia right now, since
it will need some cache handling code too, similar to the 4xx EMAC driver.
Signed-off-by: Stefan Roese <sr@denx.de>
I lately noticed, that newer 4xx board with GBit support sometimes don't
finish link autonegotiation in 4 seconds. Changing this timeout to 5
seconds seems fine here.
Signed-off-by: Stefan Roese <sr@denx.de>
We now use a value in the gd (global data) structure for the UART input
frequency, since the PPC4xx_SYS_INFO struct is always rewritten completely
in get_sys_info().
Signed-off-by: Stefan Roese <sr@denx.de>
The Haleakala is nearly identical with the Kilauea eval board. The only
difference is that the 405EXr only supports one EMAC and one PCIe
interface. This patch adds support for the Haleakala board by using
the identical image for Kilauea and Haleakala. The distinction is done
by comparing the PVR.
Signed-off-by: Stefan Roese <sr@denx.de>
Change 4xx_uart.c:
- Use in_8/out_8 macros instead of in8/out8
- No need for UART_BASE marco anymore, now really handled via function
parameter
- serial_init_common() introduced
- Further coding style cleanup
Signed-off-by: Stefan Roese <sr@denx.de>
This patch starts the rework of the PPC4xx serial driver. First we split
the file into two seperate files, one 4xx_uart.c with the 405/440 UART
handling code and the other one iop480_uart.c with the UART code for the
PLX-Tech IOP480 PPC (PPC403 based).
Signed-off-by: Stefan Roese <sr@denx.de>
This patch moves some common 4xx macros and the PPC405_SYS_INFO/
PPC440_SYS_INFO structure into the common ppc4xx.h header.
Lot's of other macros are good candidates to be consolidated this way
in the future.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch adds endpoint support for the AMCC Kilauea eval board. It can
be tested by connecting a reworked PCIe cable (only 1x lane singles
connected) to another root-complex.
In this test setup, a 64MB inbound window is configured at BAR0 which maps
to 0 on the PLB side. So accessing this BAR0 from the root-complex will
access the first 64MB of the SDRAM on the PPC side.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch adds support for dynamic configuration of PCIe ports for the
AMCC PPC4xx boards equipped with PCIe interfaces. These are the PPC440SPe
boards Yucca & Katmai and the 405EX board Kilauea.
This dynamic configuration is done via the "pcie_mode" environement
variable. This variable can be set to "EP" or "RP" for endpoint or
rootpoint mode. Multiple values can be joined via the ":" delimiter.
Here an example:
pcie_mode=RP:EP:EP
This way, PCIe port 0 will be configured as rootpoint, PCIe port 1 and 2
as endpoint.
Per default Yucca will be configured as:
pcie_mode=RP:EP:EP
Per default Katmai will be configured as:
pcie_mode=RP:RP:REP
Per default Kilauea will be configured as:
pcie_mode=RP:RP
Signed-off-by: Tirumala R Marri <tmarri@amcc.com>
Signed-off-by: Stefan Roese <sr@denx.de>
128MB seems to be the smallest possible value for the memory size
for on PCIe port. With this change now the BAR's of the PCIe cards
are accessible under U-Boot.
One big note: This only works for PCIe port 0 & 1. For port 2 this
currently doesn't work, since the base address is now 0xc0000000
(0xb0000000 + 2 * 0x08000000), and this is already occupied by
CFG_PCIE0_CFGBASE. But solving this issue for port 2 would mean
to change the base addresses completely and this change would have
too much impact right now.
This patch adds debug output to the 4xx pcie driver too.
Signed-off-by: Stefan Roese <sr@denx.de>
These files were introduced with the IBM 405GP but are currently used on all
4xx PPC platforms. So the name doesn't match the content anymore. This patch
renames the files to 4xx_pci.c/h.
Signed-off-by: Stefan Roese <sr@denx.de>
(3) This patch introduces macros like SDRN_PESDR_DLPSET(port) to access
the SDR registers of the PCIe ports. This makes the overall design
clearer, since it removed a lot of switch statements which are not
needed anymore.
Also, the functions ppc4xx_init_pcie_rootport() and
ppc4xx_init_pcie_entport() are merged into a single function
ppc4xx_init_pcie_port(), since most of the code was duplicated.
This makes maintainance and porting to other 4xx platforms
easier.
Signed-off-by: Stefan Roese <sr@denx.de>
This patch is the first patch of a series to make the 440SPe PCIe code
usable on different 4xx PPC platforms. In preperation for the new 405EX
which is also equipped with PCIe interfaces.
(2) This patch renames the functions from 440spe_ to 4xx_ with a
little additional cleanup
Signed-off-by: Stefan Roese <sr@denx.de>
This patch is the first patch of a series to make the 440SPe PCIe code
usable on different 4xx PPC platforms. In preperation for the new 405EX
which is also equipped with PCIe interfaces.
(1) This patch renames the files from 440spe_pcie to 4xx_pcie
Signed-off-by: Stefan Roese <sr@denx.de>
- correct configuration space mapping
- correct bus numbering
- better access to config space
Prior to this patch, the 440SPe host/PCIe bridge was able to configure only the
first device on the first bus. We now allow to configure up to 16 buses;
also, scanning for devices behind the PCIe-PCIe bridge is supported, so
peripheral devices farther in hierarchy can be identified.
Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Convert using fixup mechanism to suppressing MCK for the duration of config
read/write transaction: while fixups work fine with the case of a precise
exception, we identified a major drawback with this approach when there's
an imprecise case. In this scenario there is the following race condition:
the fixup is (by design) set to catch the instruction following the one
actually causing the exception; if an interrupt (e.g. decrementer) happens
between those two instructions, the ISR code is executed before the fixup
handler the machine check is no longer protected by the fixup handler as it
appears as within the ISR code. In consequence the fixup approach is being
phased out and replaced with explicit suppressing of MCK during a PCIe
config read/write cycle.
Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
platforms wishing to display RAM diagnostics in addition to size,
can do so, on one line, in their own board_add_ram_info()
implementation.
this consequently eliminates CONFIG_ADD_RAM_INFO.
Thanks to Stefan for the hint.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
This patch was originall provided by David Mitchell <dmitchell@amcc.com>
and fixes a bug in the PLL clock calculation.
Signed-off-by: Stefan Roese <sr@denx.de>
During config transactions on the PCIe bus an attempt to scan for a
non-existent device can lead to a machine check exception with certain
peripheral devices. In order to avoid crashing in such scenarios the
instrumented versions of the config cycle read routines are introduced, so
the exceptions fixups framework can gracefully recover.
Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Acked-by: Rafal Jaworowski <raj@semihalf.com>
This brings back separate settings for PCIe bus numbers depending on chip
revision, which got eliminated in 2b393b0f0a
commit. 440SPe rev. A does NOT work properly with the same settings as for
the rev. B (no devices are seen on the bus during enumeration).
Signed-off-by: Rafal Jaworowski <raj@semihalf.com>
Changed storage type of cfg_simulate_spd_eeprom to const
Changed storage type of gpio_tab to stack storage
(Cannot access global data declarations in .bss until afer code relocation)
Improved SDRAM tests to catch problems where data is not uniquely addressable
(e.g. incorrectly programmed SDRAM row or columns)
Added CONFIG_PROG_SDRAM_TLB to support Bamboo SIMM/DIMM modules
Fixed AM29LV320DT (OpCode Flash) sector map
Signed-off-by: Eugene OBrien <eugene.obrien@advantechamt.com>
Signed-off-by: Stefan Roese <sr@denx.de>
As spotted by Matthias Fuchs, the default output values for all GPIO1
outputs were not setup correctly. This patch fixes this issue.
Signed-off-by: Stefan Roese <sr@denx.de>
The new "weak" functions ddr_wrdtr() and ddr_clktr() are added to better
support non default, boardspecific DDR(2) controller configuration.
Signed-off-by: Stefan Roese <sr@denx.de>
The new function remove_tlb() can be used to remove the TLB's used to
map a specific memory region. This is especially useful for the DDR(2)
setup routines which configure the SDRAM area temporarily as a cached
area (for speedup on auto-calibration and ECC generation) and later
need this area uncached for normal usage.
Signed-off-by: Stefan Roese <sr@denx.de>
This change fixes a bug in the receive buffer handling, that
could lead to problems upon high network traffic (broadcasts...).
Signed-off-by: Stefan Roese <sr@denx.de>
