Update the 86xx reset sequence to try executing a board-specific reset
function. If the board-specific reset is not implemented or does not
succeed, then assert #HRESET_REQ. Using #HRESET_REQ is a more standard
reset procedure than the previous method and allows all board
peripherals to be reset if needed.
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Previously if we >=4G of memory and !CONFIG_PHYS_64BIT we'd report
an error and hang. Instead of doing that since DDR is mapped in the
lowest priority LAWs we setup the DDR controller and the max amount
of memory we report back is what we can map (CONFIG_MAX_MEM_MAPPED)
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Becky Bruce <beckyb@kernel.crashing.org>
Added various p2020 processor specific details:
* SVR for p2020, p2020E
* immap updates for LAWs and DDR on p2020
* LAW defines related to p2020
Signed-off-by: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: Travis Wheatley <Travis.Wheatley@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Previously we only allowed power-of-two memory sizes and didnt
handle >2G of memory. Now we will map up to CONFIG_MAX_MEM_MAPPED
and should properly handle any size that we can make in the TLBs
we have available to us
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
If we only have one controller we can completely ignore how
memctl_intlv_ctl is set. Otherwise other levels of code get confused
and think we have twice as much memory.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This fixes the initialization of the SDRAM_CODT register in the ppc4xx DDR2
initialization code. It also removes use of the SDRAM_CODT_FEEDBACK_RCV_SINGLE_END
and SDRAM_CODT_FEEDBACK_DRV_SINGLE_END #define's since they are reserved bits.
Signed-off-by: Carolyn Smith <carolyn.smith@tektronix.com>
Signed-off-by: Stefan Roese <sr@denx.de>
The criteria of the AMCC SDRAM Controller DDR autocalibration
U-Boot code is to pick the largest passing write/read/compare
window that also has the smallest SDRAM_RDCC.[RDSS] Read Sample
Cycle Select value.
On some Kilauea boards the DDR autocalibration algorithm can
find a large passing write/read/compare window with a small
SDRAM_RDCC.[RDSS] aggressive value of Read Sample Cycle Select
value "T1 Sample".
This SDRAM_RDCC.[RDSS] Read Sample Cycle Select value of
"T1 Sample" proves to be to aggressive when later on U-Boot
relocates into DDR memory and executes.
The memory traces on the Kilauea board are short so on some
Kilauea boards the SDRAM_RDCC.[RDSS] Read Sample Cycle Select
value of "T1 Sample" shows up as a potentially valid value for
the DDR autocalibratiion algorithm.
The fix is to define a weak default function which provides
the minimum SDRAM_RDCC.[RDSS] Read Sample Cycle Select value
to accept for DDR autocalibration. The default will be the
"T2 Sample" value. A board developer who has a well defined
board and chooses to be more aggressive can always provide
their own board specific string function with the more
aggressive "T1 Sample" value or stick with the default
minimum SDRAM_RDCC.[RDSS] value of "T2".
Also put in a autocalibration loop fix for case where current
write/read/compare passing window size is the same as a prior
window size, then in this case choose the write/read/compare
result that has the associated smallest RDCC T-Sample value.
Signed-off-by: Adam Graham <agraham@amcc.com>
Signed-off-by: Stefan Roese <sr@denx.de>
This patch adds the configuration option CONFIG_SYS_SMC_RXBUFLEN.
With this option it is possible to allow the receive
buffer for the SMC on 8xx to be greater then 1. In case
CONFIG_SYS_SMC_RXBUFLEN == 1 this driver works as the
old version.
When defining CONFIG_SYS_SMC_RXBUFLEN also
CONFIG_SYS_MAXIDLE must be defined to setup the maximum
idle timeout for the SMC.
Signed-off-by: Heiko Schocher <hs@denx.de>
This fixes MPC8260 compilation with ethernet on SCC. Probably was a
typo or something...
Signed-off-by: Sergey Kubushyn <ksi@koi8.net>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This patch adds the configuration option CONFIG_SYS_SMC_RXBUFLEN.
With this option it is possible to allow the receive
buffer for the SMC on 82xx to be greater then 1. In case
CONFIG_SYS_SMC_RXBUFLEN == 1 this driver works as the
old version.
When defining CONFIG_SYS_SMC_RXBUFLEN also
CONFIG_SYS_MAXIDLE must be defined to setup the maximum
idle timeout for the SMC.
Signed-off-by: Heiko Schocher <hs@denx.de>
Moved CONFIG_MAX_MEM_MAPPED to the asm/config.h so its kept consistent
between the two current users (lib_ppc/board.c, 44x SPD DDR2).
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Stefan Roese <sr@denx.de>
The PCI_REGION_MEMORY and PCI_REGION_MEM are a bit to similar and
can be confusing when reading the code.
Rename PCI_REGION_MEMORY to PCI_REGION_SYS_MEMORY to clarify its used
for system memory mapping purposes.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
M5271 dynamic clock multiplier. It is currently fixed at 100MHz.
Allow the board header file to set their own multiplier and divider.
Added the #define for the multiplier and divider to the cpu header file.
Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Discontinue the use of CONFIG_SYS_FECI2C (only used by M5271EVB).
Use read-modify-write to activate the FEC pins without disabling I2C.
Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Added the CONFIG_M5271 to the list of Coldfire V2 processor. This
was causing the bus clock (not CPU clock) to be declared twice as
fast as it actually is. This causes UARTS to operate at half the
specified baudrate.
Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
On some platforms PCIE support is not required, but would be included
because the cpu supports it. To reduce fooprint it is now configurable
via CONFIG_PCI_DISABLE_PCIE.
Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>
This patch updates the fdt UART clock fixup code to
only touch CPU internal UARTs on 4xx systems.
Only these UARTs are definitely clocked by gd->uart_clk.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Previously, booting over the UART required the baud rate to be known ahead
of time. Using a bit of tricky simple math, we can calculate the new board
rate based on the old divisors.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Newer Blackfin boot roms support using the fast SPI read command rather than
just the slow one. If the functionality is available, then use it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Some bits of the DDR MMRs should not be set. If they do, bad things may
happen (like random failures or hardware destruction).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Newer Blackfin's have an on-chip rom with a syscontrol() function that needs
to be used to properly program the memory and voltage settings as it will
include (possibly critical) factory tested bias values.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
IIM (IC Identification Module) is the fusebox for the mpc5121.
Use #define CONFIG_IIM to turn on the clock for this module
use #define CONFIG_CMD_FUSE to add fusebox commands.
Fusebox commands include the ability to read
the status, read the register cache, override the register cache,
program the fuses and sense them.
Signed-off-by: Martha Marx <mmarx@silicontkx.com>
Signed-off-by: John Rigby <jrigby@freescale.com>
Take the cache flush functions from the kernel as they use hardware loops in
order to get optimal performance.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Start building all Blackfin boards with -ffunction-sections/-fdata-sections
and linking with --gc-sections.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
instead the board will have to load it from flash or ram
which will be specified by npe_ucode env var
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Rather than forcing people to define a custom "LITTLEENDIAN", just use the
__LITTLE_ENDIAN one from the Linux byteorder headers that every arch is
already setting up.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Remy Bohmer <linux@bohmer.net>
Some devices have no UART device pulled out, so allow people to disable the
driver completely in favor of other methods (like JTAG-console).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The Blackfin JTAG has the ability to pass data via a back-channel without
halting the processor. Utilize that channel to emulate a console.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Make sure we save the value of RETX at power on and then pass it on to the
kernel so that it can nicely debug a "double-fault-caused-a-reset" crash.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
People often ask questions about the init process and when things go
from flash to relocated base, so clarify the comments a bit.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
As pointed out by Ivan Koryakovskiy, the initialization code was not
actually respecting the CONFIG_CLKIN_HALF option when configuring the
PLL_CTL register.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Peter Tyser
Kumar Gala
Srikanth Srinivasan
Carolyn Smith
Adam Graham
Wolfgang Denk
Heiko Schocher
ksi@koi8.net
Becky Bruce
Richard Retanubun
Dirk Eibach
Matthias Fuchs
Mike Frysinger
Martha Marx
Jean-Christophe PLAGNIOL-VILLARD