Commit graph

27 commits

Author SHA1 Message Date
Joakim Tjernlund
afc3ba0fc4 relocation: Do not relocate NULL pointers.
NULL is an absolute value and should not be relocated.
After this correction code like:
 void weak_fun(void) __attribute__((weak));
 printf("weak_fun:%p\n", weak_fun);
will still print null after relocation.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2009-10-08 09:33:36 +02:00
Scott Wood
6677876181 83xx: Use the proper sequence for updating IMMR.
This ensures that subsequent accesses properly hit the new window.

The dcbi during the NAND loop was accidentally working around this;
it's no longer necessary, as the cache is not enabled.

Reported-by: Suchit Lepcha <Suchit.Lepcha@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2009-01-21 18:43:57 -06:00
Ron Madrid
455a46915b mpc83xx: Size optimization of start.S
Currently there are in excess of 100 bytes located at the beginning of the image
built by start.S that are not being utilized.  This patch moves a few functions
into this part of the image.  This will create a greater number of *available*
bytes that can be used by board specific code in NAND builds and will decrease
the size of the assembled code in other builds.

Signed-off-by: Ron Madrid <ron_madrid@sbcglobal.net>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2009-01-21 18:43:49 -06:00
Peter Tyser
561858ee7d Update U-Boot's build timestamp on every compile
Use the GNU 'date' command to auto-generate a new U-Boot
timestamp on every compile.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2008-12-06 23:36:43 +01:00
Wolfgang Denk
f82642e338 Merge 'next' branch
Conflicts:

	board/freescale/mpc8536ds/mpc8536ds.c
	include/configs/mgcoge.h

Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-10-18 21:59:44 +02:00
Jean-Christophe PLAGNIOL-VILLARD
6d0f6bcf33 rename CFG_ macros to CONFIG_SYS
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-10-18 21:54:03 +02:00
Lepcha Suchit
fa7b1c07e9 83xx NAND boot: wait for LTESR[CC]
At least some revisions of the 8313, and possibly other chips, do not
wait for all pages of the initial 4K NAND region to be loaded before
beginning execution; thus, we wait for it before branching out of the
first NAND page.

This fixes warm reset problems when booting from NAND on 8313erdb.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
2008-10-17 10:39:18 -05:00
Nick Spence
6eb2a44e27 mpc83xx: clean up cache operations and unlock_ram_in_cache() functions
Cleans up some latent issues with the data cache control so that
dcache_enable() and dcache_disable() will work reliably (after
unlock_ram_in_cache() has been called)

Signed-off-by: Nick Spence <nick.spence@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2008-09-03 16:07:00 -05:00
Nick Spence
46497056ae mpc83xx: Store and display Arbiter Event Register values
Record the Arbiter Event Register values and optionally display them.

The Arbiter Event Register can record the type and effective address of
an arbiter error, even through an HRESET. This patch stores the values in
the global data structure.

Display of the Arbiter Event registers immediately after the RSR value
can be enabled with defines. The Arbiter values will only be displayed
if an arbiter event has occured since the last Power On Reset, and either
of the following defines exist:
 #define CONFIG_DISPLAY_AER_BRIEF - display only the arbiter address and
                                    and type register values
 #define CONFIG_DISPLAY_AER_FULL  - display and interpret the arbiter
                                    event register values

Address Only transactions are one of the trapped events that can register
as an arbiter event. They occur with some cache manipulation instructions
if the HID0_ABE (Address Broadcast Enable) is set and the memory region
has the MEMORY_COHERENCE WIMG bit set. Setting:
 #define CONFIG_MASK_AER_AO - prevents the arbiter from recording address
                              only events, so that it can still capture
                              other real problems.

Signed-off-by: Nick Spence <nick.spence@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2008-09-03 16:06:57 -05:00
Nick Spence
ade50c7fa1 mpc83xx: use r4 instead of r2 in lock_ram_in_cache and unlock_ram_in_cache
This is needed in unlock_ram_in_cache() because it is called from C and
will corrupt the small data area anchor that is kept in R2.

lock_ram_in_cache() is modified similarly as good coding practice, but
is not called from C.

Signed-off-by: Nick Spence <nick.spence@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2008-09-03 16:06:51 -05:00
Scott Wood
e4c0950854 NAND boot: MPC8313ERDB support
Note that with older board revisions, NAND boot may only work after a
power-on reset, and not after a warm reset.  I don't have a newer board
to test on; if you have a board with a 33MHz crystal, please let me know
if it works after a warm reset.

Signed-off-by: Scott Wood <scottwood@freescale.com>
2008-08-12 11:31:31 -05:00
Becky Bruce
31d8267224 PPC: Create and use CONFIG_HIGH_BATS
Change all code that conditionally operates on high bat
registers (that is, BATs 4-7) to look at CONFIG_HIGH_BATS
instead of the myriad ways this is done now.  Define the option
for every config for which high bats are supported (and
enabled by early boot, on parts where they're not always
enabled)

Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
2008-06-03 17:48:41 +02:00
Kim Phillips
78e4882988 lib_ppc: Revert "Make MPC83xx one step closer to full relocation."
This reverts commit 70431e8a73 which has
proven problematic getting right from the start at least on 83xx and
4xx.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2008-04-25 00:13:12 +02:00
Joakim Tjernlund
70431e8a73 Make MPC83xx one step closer to full relocation.
Remove a few absolute references to CFG_MONITOR_BASE for ppc/mpc83xx
and use GOT relative reference.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2008-03-28 18:51:54 -05:00
Rafal Jaworowski
f57d7d364c ppc: Refactor cache routines, so there is only one common set.
Signed-off-by: Rafal Jaworowski <raj@semihalf.com>
2008-02-14 22:00:41 +01:00
Heiko Schocher
f6db945649 Fixed syntax error in function init_e300_core() of mpc83xx/start.S if
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
2008-01-12 00:43:59 +01:00
Rafal Jaworowski
02032e8f14 [ppc] Fix build breakage for all non-4xx PowerPC variants.
- adapt to the more generic EXCEPTION_PROLOG and CRIT_EXCEPTION macros
- minor 4xx cleanup
2007-06-22 14:58:04 +02:00
Jerry Van Baren
f35f358241 mpc83xx: Put the version (and magic) after the HRCW.
Put the version (and magic) after the HRCW.  This puts it in a fixed
location in flash, not at the start of flash but as close as we can get.

Signed-off-by: Jerry Van Baren <vanbaren@cideas.com>
2007-03-02 11:05:53 -06:00
Timur Tabi
d239d74b1c mpc83xx: Replace CFG_IMMRBAR with CFG_IMMR
Replace all instances of CFG_IMMRBAR with CFG_IMMR, so that the 83xx
tree matches the other 8xxx trees.

Signed-off-by: Timur Tabi <timur@freescale.com>
2006-11-03 19:42:23 -06:00
Dave Liu
90f30a710a mpc83xx: Fix the incorrect dcbz operation
The 834x rev1.x silicon has one CPU5 errata.

The issue is when the data cache locked with
HID0[DLOCK], the dcbz instruction looks like no-op inst.

The right behavior of the data cache is when the data cache
Locked with HID0[DLOCK], the dcbz instruction allocates
new tags in cache.

The 834x rev3.0 and later and 8360 have not this bug inside.

So, when 834x rev3.0/8360 are working with ECC, the dcbz
instruction will corrupt the stack in cache, the processor will
checkstop reset.

However, the 834x rev1.x can work with ECC with these code,
because the sillicon has this cache bug. The dcbz will not
corrupt the stack in cache.
Really, it is the fault code running on fault sillicon.

This patch fix the incorrect dcbz operation. Instead of
CPU FP writing to initialise the ECC.

CHANGELOG:
* Fix the incorrect dcbz operation instead of CPU FP
writing to initialise the ECC memory. Otherwise, it
will corrupt the stack in cache, The processor will checkstop
reset.

Signed-off-by: Dave Liu <daveliu@freescale.com>
2006-11-03 19:42:22 -06:00
Timur Tabi
31068b7c4a mpc83xx: Add support for variable flash memory sizes on 83xx systems
CHANGELOG:

* On 83xx systems, use the CFG_FLASH_SIZE macro to program the LBC local access
   window registers, instead of using a hard-coded value of 8MB.

Signed-off-by: Timur Tabi <timur@freescale.com>
2006-11-03 19:42:18 -06:00
Marian Balakowicz
cd94ba397e Add Dcbz(), Dcbi() and Dcbf() routines for MPC83xx. 2006-03-14 16:02:31 +01:00
Marian Balakowicz
a7c66ad2e5 Correct shift offsets in icache_status and dcache_status for MPC83xx. 2006-03-14 16:01:25 +01:00
Kumar Gala
2688e2f972 Enable address translation on MPC83xx
Patch by Kumar Gala, 10 Feb 2006
2006-02-10 15:40:06 -06:00
Kumar Gala
ec00c33578 Only disable the MPC83xx watchdog if its enabled out of reset.
If its disabled out of reset SW can later enable it if so desired
Patch by Kumar Gala, 11 Jan 2006
2006-01-11 11:23:01 -06:00
Jon Loeliger
de1d0a6995 Fix style issues primarily in 85xx and 83xx boards.
- C++ comments
    - Trailing white space
    - Indentation not by TAB
    - Excessive amount of empty lines
    - Trailing empty lines
2005-08-01 13:20:47 -05:00
Eran Liberty
f046ccd15c * Patch by Eran Liberty
Add support for the Freescale MPC8349ADS board.
2005-07-28 10:08:46 -05:00