Commit graph

115 commits

Author SHA1 Message Date
Wolfgang Denk
a9aa392629 Drop support for CONFIG_SYS_ARM_WITHOUT_RELOC
When this define was introduced, the idea was to provide a soft
migration path for ARM boards to get adapted to the new relocation
support.  However, other recent changes led to a different
implementation (ELF relocation), where this no longer works.  By now
CONFIG_SYS_ARM_WITHOUT_RELOC does not only not help any more, but it
actually hurts because it obfuscates the actual code by sprinkling it
with lots of dead and non-working debris.

So let's make a clean cut and drop CONFIG_SYS_ARM_WITHOUT_RELOC.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Reinhard Meyer <u-boot@emk-elektronik.de>
2010-10-29 21:39:59 +02:00
Wolfgang Denk
14d0a02a16 Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE
The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-18 22:07:10 +02:00
Steve Sakoman
136c69ad79 ARMV7: OMAP3: Fix bug in get_sdr_cs_offset()
This patch fixes a typo in the routine to calculate the cs offset
based upon the contents of the SDRC cs_cfg register.  This function
mistakenly shifts the CS1STARTLOW field 17 bits right instead of
17 bits left.

This hasn't been an issue to date because all OMAP3 boards currently
are configured to have zeros in this field.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Steve Sakoman <steve.sakoman@linaro.org>
2010-10-17 20:14:28 +02:00
Heiko Schocher
561142af20 ARM: implement relocation for ARM V7 (OMAP)
Change the implementation for ARM V7 to relocate the code to an
arbitrary address in RAM.

Adapt the Beagle board (Cortex A8) to test the changes.

Portions of this work were supported by funding from
the CE Linux Forum.

Signed-off-by: Heiko Schocher <hs@denx.de>
2010-09-19 19:29:53 +02:00
Heiko Schocher
95c6f6d34d ARM V7 (OMAP): add data cache support, test on Beagle board
Add data cache support for ARM V7 systems. Used cache flush
functions from linux:arch/arm/mm/cache-v7.S developed from
Catalin Marinas.

Enable "cache" command on Beagle board and test performance.

    Test 1: Loading 127 MB of data from NAND flash into RAM:

    Instr. Cache	off	on	on
      Data Cache	off	off	on
    --------------------------------------------------
    Beagle (Cortex A8)	116s	106s	30.3s	= x 3.8

    Test 2: uncompressing a gzipped image from RAM to RAM
            (size compressed: 6.5 MiB, uncompressed: 35 MiB):

    Instr. Cache	off	on	on
      Data Cache	off	off	on
    --------------------------------------------------
    Beagle (Cortex A8)	1.84s	1.64s	0.12s	= x 15.3

Portions of this work were supported by funding from
the CE Linux Forum.

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Ben Gardiner<bengardiner@nanometrics.ca>
2010-09-19 19:29:51 +02:00
Wolfgang Denk
2d941de9d5 Prepare v2010.09-rc1
Coding style cleanup.

Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-09-10 00:16:19 +02:00
Steve Sakoman
3667cbeed5 ARMV7: OMAP3: Remove erroneous hard coded sdram setup for 128MB/bank
Upcoming Beagle and Overo revisions use POP memory with 256MB or 512MB
per bank.  This patches uses the SDRC settings from x-load or the config
header to set up timing properly.

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-09-08 14:51:24 -04:00
Mans Rullgard
0c0a0e0781 ARMV7: OMAP3: Apply Cortex-A8 errata workarounds only on affected revisions
The workarounds for errata 621766 and 725233 should only be applied
on affected Cortex-A8 revisions.  Recent chips use r3px cores where
these have been fixed.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-09-08 14:51:13 -04:00
Mans Rullgard
096ca838b5 ARMV7: OMAP3: Convert setup_auxcr() to pure asm
This function consists entirely of inline asm statements, so writing
it directly in a .S file is simpler. Additionally, the inline asm is
not safe as is, since registers are not guaranteed to be preserved
between asm() statements.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-09-08 14:51:09 -04:00
Mans Rullgard
2984470746 ARMV7: OMAP3: Fix and clean up L2 cache enable/disable functions
On OMAP34xx ES1.0, the L2 enable bit can only be set in secure mode,
so an SMC call to the ROM monitor is required.  On later versions,
and on newer devices, this bit is banked and we can set it directly.

The code checked only the ES revision of the chip, and hence incorrectly
used the ROM call on ES1.0 versions of other devices.

This patch adds a check for chip family as well as revision, and also
removes some code duplication between the enable and disable functions.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-09-08 14:51:04 -04:00
Steve Sakoman
7c281c985c ARMV7: OMAP3: Add clock setup for OMAP36XX/37XX
This patch configures clocks properly when a 36XX/37XX
processor is detected.

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-09-08 14:50:58 -04:00
Steve Sakoman
b2b9169f0b ARMV7: OMAP3: Update CPU type detection for AM35XX/OMAP36XX/37XX
TI has added new processors to the OMAP3 family.  This patch enhances
the code in sysinfo.c to detect which family member is present.

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-09-08 14:50:52 -04:00
Steve Sakoman
0e7b62179f ARMV7: OMAP: Move syslib.c to omap-common since it can be shared by OMAP3 and OMAP4
The functions in syslib.c can be shared, so this patch moves it from
cpu/omap3 to cpu/omap-common

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-09-08 14:50:17 -04:00
Steve Sakoman
d34efc767d ARMV7: Add basic support for TI OMAP4
This patch adds minimum support for OMAP4. Code which can be shared
between OMAP3 and OMAP4 is placed in arch/arm/cpu/armv7/omap-common

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-07-05 20:00:00 -04:00
Steve Sakoman
f56348af5d ARM: Rename arch/arm/cpu/arm_cortexa8 to armv7
The purpose of this patch is to prepare for adding the OMAP4 architecture, which is Cortex A9

Cortex A8 and A9 both belong to the armv7 architecture, hence the name change.

The two architectures are similar enough that substantial code can be shared.

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-07-05 19:59:55 -04:00