We cannot use the omap34xx_sram_init(). It needs to be implemented
for omap4. Otherwise we get an error and the system won't boot:
Unhandled fault: imprecise external abort (0x1406) at 0xea963e94
...
Fix this by adding a dummy omap44xx_sram_init().
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch fixes the public sram base address and available
size on OMAP4430.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Add a Video RAM manager for OMAP 2 and 3 platforms. VRAM manager is used
to allocate large continuous blocks of SDRAM or SRAM. The features VRAM
manager has that are missing from dma_alloc_* functions are:
- Support for OMAP2's SRAM
- Allocate without ioremapping
- Allocate at defined physical addresses
- Allows larger VRAM area and larger allocations
The upcoming DSS2 uses VRAM manager.
VRAM area size can be defined in kernel config, board file or with
kernel boot parameters. Board file definition overrides kernel config,
and boot parameter overrides kernel config and board file.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Generalize the copy of SRAM functions into omap_push_sram_idle()
so it can be used on init but also after off-mode transitions.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Move the remaining headers under plat-omap/include/mach
to plat-omap/include/plat. Also search and replace the
files using these headers to include using the right path.
This was done with:
#!/bin/bash
mach_dir_old="arch/arm/plat-omap/include/mach"
plat_dir_new="arch/arm/plat-omap/include/plat"
headers=$(cd $mach_dir_old && ls *.h)
omap_dirs="arch/arm/*omap*/ \
drivers/video/omap \
sound/soc/omap"
other_files="drivers/leds/leds-ams-delta.c \
drivers/mfd/menelaus.c \
drivers/mfd/twl4030-core.c \
drivers/mtd/nand/ams-delta.c"
for header in $headers; do
old="#include <mach\/$header"
new="#include <plat\/$header"
for dir in $omap_dirs; do
find $dir -type f -name \*.[chS] | \
xargs sed -i "s/$old/$new/"
done
find drivers/ -type f -name \*omap*.[chS] | \
xargs sed -i "s/$old/$new/"
for file in $other_files; do
sed -i "s/$old/$new/" $file
done
done
for header in $(ls $mach_dir_old/*.h); do
git mv $header $plat_dir_new/
done
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch moves SRAM map to free up more kernel address io space.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch splits OMAP2_IO_ADDRESS to OMAP2_L3_IO_ADDRESS and
OMAP2_L4_IO_ADDRESS to reclaim more IO space.
The omap_read*() and omap_write*() functions will work only over
L4 address space. Current omap kernel stack uses these functions
only to access registers over L4 io address space
Note that these macros should only be used when ioremap does
not work. Please use ioremap instead in all new code.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
the original flush operation is to flush the function address which is
copied from.
But we do not change the function code and it is not necessary to flush it.
Signed-off-by: janboe <janboe.ye@gmail.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Search and replace OMAP_IO_ADDRESS with OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS,
and convert omap_read/write into a functions instead of a macros.
Also rename OMAP_MPUIO_VBASE to OMAP1_MPUIO_VBASE.
In the long run, most code should use ioremap + __raw_read/write instead.
Signed-off-by: Tony Lindgren <tony@atomide.com>
commit e85c205ac1 increase vmalloc size.
vmalloc space will overlap with OMAP3 sram virtual address.
Signed-off-by: Li Hong Mei <hong-mei.li@motorola.com>
Signed-off-by: Janboe Ye <yuan-bo.ye@motorola.com>
Reviewed-by: Paul Walmsley <paul@pwsan.com>
Some OMAP3 boards (Beagle Cx, Overo, RX51, Pandora) have 2
SDRAM parts connected to the SDRC.
This patch adds the following:
- add a new argument of type omap_sdrc_params struct*
to omap2_init_common_hw and omap2_sdrc_init for the 2nd CS params
- adapted the OMAP boards files to the new prototype of
omap2_init_common_hw
- add the SDRC 2nd CS registers offsets defines
- adapt the sram sleep code to configure the SDRC for the 2nd CS
Note: If the 2nd param to omap2_init_common_hw is NULL, then the
parameters are not programmed into the SDRC CS1 registers
Tested on 3430 SDP and Beagleboard rev C2 and B5, with
suspend/resume and frequency changes (cpufreq).
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
SRAM size fix for HS/EMU devices
Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Program the SDRC_MR_0 register as well during SDRC clock changes.
This register allows selection of the memory CAS latency. Some SDRAM
chips, such as the Qimonda HYB18M512160AF6, have a lower CAS latency
at lower clock rates.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
When changing the SDRAM clock from 166MHz to 83MHz via the CORE DPLL M2
divider, add a short delay before returning to SDRAM to allow the SDRC
time to stabilize. Without this delay, the system is prone to random
panics upon re-entering SDRAM.
This time delay varies based on MPU frequency. At 500MHz MPU frequency at
room temperature, 64 loops seems to work okay; so add another 32 loops for
environmental and process variation.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This patch adds the support for OMAP4. The platform and machine specific
headers and sources updated for OMAP4430 SDP platform.
OMAP4430 is Texas Instrument's SOC based on ARM Cortex-A9 SMP architecture.
It's a dual core SOC with GIC used for interrupt handling and SCU for cache
coherency.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch removes fixes omap_sram_error() function and replace the
error paths with BUG_ON.
The proposed fix was suggested by Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This increases VMALLOC_END to 0x18000000, making room for 256MB
RAM with the default 128MB vmalloc region.
Note that after this patch there's no longer a hole between vmalloc
space and the beginning of IO space on omap2 as the first virtual
mapping starts at 0xd8000000.
Also fold in a related change from Paul Walmsley <paul@pwsan.com>
to change the OMAP2_SRAM addresses accordingly.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch removes fixes omap_sram_error() function and replace the
error paths with BUG_ON.
The proposed fix was suggested by Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
According to the 34xx TRM Rev. K section 11.2.4.4.11.1 "Purpose of the
DLL/CDL Module," the SDRC delay-locked-loop can be locked at any SDRC
clock frequency from 83MHz to 166MHz. CDP code unconditionally
unlocked the DLL whenever shifting to a lower SDRC speed, but this
seems unnecessary and error-prone, as the DLL is no longer able to
compensate for process, voltage, and temperature variations. Instead,
only unlock the DLL when the SDRC clock rate would be less than 83MHz.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Mark the SRAM (aka OCM RAM) as Non-cacheable Normal memory[1]. This
is to prevent the ARM from evicting existing cache lines to SDRAM
while code is executing from the SRAM. Necessary since one of the
primary uses for the SRAM is to hold the code and data for the CORE
DPLL M2 divider reprogramming code, which must execute while the SDRC
is idled. If the ARM attempts to write cache lines back to the while
the SRAM code is running, the ARM will stall[2].
TI deals with this problem in the CDP kernel by marking the SRAM as
Strongly-ordered memory.
Tero Kristo <tero.kristo@nokia.com> caught a bug in an earlier version of
this patch - thanks Tero.
...
1. ARMv7 ARM (DDI 0406A) pp. A3-30, A3-31, B3-32.
2. Private communication with Richard Woodruff <r-woodruff2@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <tero.kristo@nokia.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
system_rev is meant for board revision, this patch changes
all relevant instances to use the new omap_rev() function
liberating system_rev to be used with ATAG_REVISION as it
has been designed.
Signed-off-by: Lauri Leukkunen <lauri.leukkunen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch fixes a number of sillies, from missing 'const' to using
'return' in void functions, to functions with no arguments not even
'void' and a cast which isn't required.
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add minimal omap3430 support based on earlier patches from
Syed Mohammed Khasim. Also merge in omap34xx SRAM support
from Karthik Dasu and use consistent naming for sram init
functions.
Also do following changes that make 34xx support usable:
- Remove unused sram.c functions for 34xx
- Rename IRQ_SIR_IRQ to INTCPS_SIR_IRQ and define it locally
in entry-macro.S
- Update mach-omap2/io.c to support 2420, 2430, and 34xx
- Also merge in 34xx GPMC changes to add fields wr_access and
wr_data_mux_bus from Adrian Hunter
- Remove memory initialization call omap2_init_memory() until
until more generic memory initialization patches are posted.
It's OK to rely on bootloader initialization until then.
Signed-off-by: Syed Mohammed, Khasim <khasim@ti.com>
Signed-off-by: Karthik Dasu<karthik-dp@ti.com>
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
- in addition to fixed FB regions - as passed by the bootloader -
allow dynamic allocations
- do some more checking against overlapping / reserved regions
- move the FB specific parts out from sram.c to fb.c
Signed-off-by: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch syncs omap specific core code with linux-omap.
Most of the changes are needed to fix bitrot caused by
driver updates in linux-omap tree.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
[ARM] 3541/2: workaround for PXA27x erratum E7
[ARM] nommu: provide a way for correct control register value selection
[ARM] 3705/1: add supersection support to ioremap()
[ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure
[ARM] 3706/2: ep93xx: add cirrus logic edb9315a support
[ARM] 3704/1: format IOP Kconfig with tabs, create more consistency
[ARM] 3703/1: Add help description for ARCH_EP80219
[ARM] 3678/1: MMC: Make OMAP MMC work
[ARM] 3677/1: OMAP: Update H2 defconfig
[ARM] 3676/1: ARM: OMAP: Fix dmtimers and timer32k to compile on OMAP1
[ARM] Add section support to ioremap
[ARM] Fix sa11x0 SDRAM selection
[ARM] Set bit 4 on section mappings correctly depending on CPU
[ARM] 3666/1: TRIZEPS4 [1/5] core
ARM: OMAP: Multiplexing for 24xx GPMC wait pin monitoring
ARM: OMAP: Fix SRAM to use MT_MEMORY instead of MT_DEVICE
ARM: OMAP: Update dmtimers
ARM: OMAP: Make clock variables static
ARM: OMAP: Fix GPMC compilation when DEBUG is defined
ARM: OMAP: Mux updates for external DMA and GPIO
...
MT_MEMORY is needed in order to execute code in SRAM. Also
need to use section mapping.
Based on a patch by Richard Woodruff.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Patch from Tony Lindgren
Update OMAP PM code from linux-omap tree:
- Move PM code from plat-omap to mach-omap1 and mach-omap2
by Tony Lindgren
- Add minimal PM support for omap24xx by Tony Lindgren and
Richard Woodruff
- Misc updates to omap1 PM code by Tuukka Tikkanen et al
- Updates to the SRAM code needed for PM and FB by Imre Deak
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Tony Lindgren
This patch adds the missing cache flushes to common low-level
init that are needed to access the IO region. These flushes
are normally done at the end of devicemaps_init(), but we
need to detect the OMAP core type early.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Tony Lindgren
This patch syncs the mainline kernel with linux-omap tree.
The highlights of the patch are:
- Serial port and framebuffer init improvments by Imre Deak
- Common omap pin mux framework by Tony Lindgren
- Common omap clock framework by Tony Lindren
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Deepak Saxena
OMAP map_desc.pfn conversion
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Tony Lindgren
This patch syncs the mainline kernel with linux-omap tree.
The highlights of the patch are:
- Clock updates by Tuukka Tikkanen, Juha Yrjola,
Daniel Petrini and Tony Lindgren
- DMA fixes by Imre Deak, Juha Yrjola and Daniel Petrini
- Add support to dual-mode hardware timers by Lauri Leukkunen
- GPIO support for 24xx by Paul Mundt
- GPIO wake-up support by Tony Lindgren
- Better GPIO interrupt handler to not lose interrupts by
Ralph Walden and Ladislav Michl
- Power Management updates by Tuukka Tikkanen
- Make Power Management code use new SRAM functions by
Tony Lindgren
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tony Lindgren