Currently, the GDT is either located in FLASH or in the non-relocated
U-Boot image in RAM. Both of these locations are unsafe as those
locations can be erased during a U-Boot update. Move the GDT into the
highest available memory location and relocate U-Boot to just below it
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Add a parameter to the 32-bit entry to indicate if entry is from Real
Mode or not. If entry is from Real Mode, execute the destructive 'sizer'
routine to determine memory size as we are booting cold and running in
Flash. If not entering from Real Mode, we are executing a U-Boot image
from RAM and therefore the memory size is already known (and running
'sizer' will destroy the running image)
There are now two 32-bit entry points. The first is the 'in RAM' entry
point which exists at the start of the U-Boot binary image. As such,
you can load u-boot.bin in RAM and jump directly to the load address
without needing to calculate any offsets. The second entry point is
used by the real-to-protected mode switch
This patch also changes TEXT_BASE to 0x6000000 (in RAM). You can load
the resulting image at 0x6000000 and simple go 0x6000000 from the u-boot
prompt
Hopefully a later patch will completely elliminate any dependency on
TEXT_BASE like a relocatable linux kernel (perfect world)
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
This patch allows the low-level assembler boot-strap to obtain the RAM
size without calling the destructive 'sizer' routine. This allows
boot-strapping from a U-Boot image loaded in RAM
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
There is an error in how the assembler version of the sc520 memory size
reporting code works. As a result, it will only ever report at most the
size of one bank of RAM
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
Shamelessly steal the Linux x86 crash handling code and shove it into
U-Boot (cool - it fits). Be sure to include suitable attribution to
Linus
Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
This avoids a possible overwrite of the (end of) ramdisk by u-boot.
The unused memory region for ppc boot currently starts 1k below the
do_bootm->bootm_start->arch_lmb_reserve stack ptr. This isn't enough since
do_bootm->do_bootm_linux->boot_relocate_fdt calls printf which may
very well use more than 1k stack space.
Signed-off-by: Norbert van Bolhuis <nvbolhuis@aimvalley.nl>
For code archeologists, this is a nice example of copy and paste history.
Signed-off-by: Detlev Zundel <dzu@denx.de>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
The QONG module can be downsized and delivered
with 128MB instead of 256MB. The patch adds
run time support for the two different memory
configurations.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Replace call to imx_get_mpllclk with imx_get_armclk
to show frequency of ARM core instead of mpll internal
bus in print_cpuinfo.
Signed-off-by: John Rigby <jcrigby@gmail.com>
CC: Stefano Babic <sbabic@denx.de>
The lowlevel_init file contained some hard-coded values
to setup the RAM. These board related values are moved into
the board configuration file.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Because of s5pc1xx gpio is same as s5p seires SoC,
move gpio functions to drvier/gpio/
and modify structure's name from s5pc1xx_ to s5p_.
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Because of other s5p series SoC will use these serial functions,
modify function's name and structure's name.
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
The MPC83xx SERDES control is different from the other FSL PPC chips.
For now lets split it out so we can standardize on interfaces for
determining of a device on SERDES is configured.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Lan Chunhe <b25806@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
clean up the wrong io_sel for PCI express according to latest manual.
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add an extra cycle turnaround time to read->write to ensure stability
at high DDR frequencies.
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
add the macro definition for Rtt_Nom termination value for DDR3
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Extend pin control and clock control to GUTS memory map
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
When DDR is in synchronous mode, the existing code assigns sysclk
frequency to DDR frequency. It should be synchronous with the platform
frequency. CPU frequency is based on platform frequency in synchronous
mode.
Also fix:
* Fixes the bit mask for DDR_SYNC (RCWSR5[184])
* Corrects the detection of synchronous mode.
Signed-off-by: Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This patch fixes error when CONFIG_SYS_NO_FLASH. And adds
nand flash and mmc initialization, which should go before
env initialization.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
Global interrupt should be disabled from the beginning.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
This function return cache-line aligned allocation which is mapped
to uncached io region.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
This patch adds 64 bits swab support. Most 32 bits processors use
this. We need 64 bits swab for UBI.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
This patch allow boards to override the default link script.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>
Add common post_word_load/post_word_store routines
for all mpc5121 boards. pdm360ng board POST support
added by subsequent patch needs them.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
PDM360NG is a MPC5121E based board by ifm ecomatic gmbh.
Signed-off-by: Michael Weiss <michael.weiss@ifm.com>
Signed-off-by: Detlev Zundel <dzu@denx.de>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Configure CONFIG_SYS_MAX_RAM_SIZE address range in
DDR Local Access Window and determine the RAM size.
Fix DDR LAW afterwards using detected RAM size.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
