In preperation for full relocation
Signed-off-by: Graeme Russ graeme.r...@gmail.com
---
cpu/i386/Makefile |2 +-
cpu/i386/cpu.c |1 -
cpu/i386/exceptions.c | 229 -
cpu/i386/interrupts.c | 431
Graeme Russ graeme.r...@gmail.com wrote on 17/10/2009 07:17:04:
[SNIP]
Apologies if this is getting way off-topic for a simple boot loader, but
this is information I have gathered from far and wide over the net. I am
surprised that there isn't a web site out there on 'How to create a
J. William Campbell jwilliamcampb...@comcast.net wrote on 14/10/2009
01:48:52:
Joakim Tjernlund wrote:
Graeme Russ graeme.r...@gmail.com wrote on 13/10/2009 22:06:56:
On Tue, Oct 13, 2009 at 10:53 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r
Graeme Russ graeme.r...@gmail.com wrote on 14/10/2009 13:48:27:
On Wed, Oct 14, 2009 at 6:25 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
J. William Campbell jwilliamcampb...@comcast.net wrote on 14/10/2009
01:48:52:
Joakim Tjernlund wrote:
Graeme Russ graeme.r
J. William Campbell jwilliamcampb...@comcast.net wrote on 14/10/2009
17:35:44:
Joakim Tjernlund wrote:
J. William Campbell jwilliamcampb...@comcast.net wrote on 14/10/2009
01:48:52:
Joakim Tjernlund wrote:
Graeme Russ graeme.r...@gmail.com wrote on 13/10/2009 22:06:56
Graeme Russ graeme.r...@gmail.com wrote on 13/10/2009 13:21:05:
On Sun, Oct 11, 2009 at 11:51 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r...@gmail.com wrote on 11/10/2009 12:47:19:
[Massive Snip :)]
So, all that is left are .dynsym and .dynamic
J. William Campbell jwilliamcampb...@comcast.net wrote on 13/10/2009
18:30:43:
Joakim Tjernlund wrote:
Graeme Russ graeme.r...@gmail.com wrote on 13/10/2009 13:21:05:
On Sun, Oct 11, 2009 at 11:51 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r
Graeme Russ graeme.r...@gmail.com wrote on 13/10/2009 22:06:56:
On Tue, Oct 13, 2009 at 10:53 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r...@gmail.com wrote on 13/10/2009 13:21:05:
On Sun, Oct 11, 2009 at 11:51 PM, Joakim Tjernlund
joakim.tjernl
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 06:43:52:
On Fri, Oct 9, 2009 at 10:12 AM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
On Fri, Oct 9, 2009 at 9:27 AM, J. William Campbell
jwilliamcampb...@comcast.net wrote:
Graeme Russ wrote:
On Fri, Oct 9, 2009
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 10:46:52:
On Sat, Oct 10, 2009 at 7:07 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 06:43:52:
On Fri, Oct 9, 2009 at 10:12 AM, Joakim Tjernlund
joakim.tjernl
u-boot-boun...@lists.denx.de wrote on 10/10/2009 11:51:16:
From:
Alessandro Rubini rubini-l...@gnudd.com
To:
u-boot@lists.denx.de
Cc:
stericsson_nomadik_li...@list.st.com, andrea.ga...@stericsson.com
Date:
10/10/2009 11:51
Subject:
[U-Boot] [PATCH V4 2/3] lib_generic memset:
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 12:38:19:
On Sat, Oct 10, 2009 at 8:27 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 10:46:52:
On Sat, Oct 10, 2009 at 7:07 PM, Joakim Tjernlund
joakim.tjernl
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 13:21:10:
On Sat, Oct 10, 2009 at 9:47 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 12:38:19:
On Sat, Oct 10, 2009 at 8:27 PM, Joakim Tjernlund
joakim.tjernl
Mike Frysinger vap...@gentoo.org wrote on 10/10/2009 18:52:29:
On Saturday 10 October 2009 06:47:42 Joakim Tjernlund wrote:
Graeme Russ graeme.r...@gmail.com wrote on 10/10/2009 12:38:19:
-fpic / -pic make no difference
not on x86, on ppc it is a big difference.
i think you guys mean
Dear Joakim Tjernlund,
In message 1254960231-11441-1-git-send-email-joakim.tjernl...@transmode.se
you wrote:
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
Dear Alessandro Rubini,
In message 20091008074114.ga30...@mail.gnudd.com you wrote:
Since int is 32 also on 64bit systems, I used unsigned long.
Note that this is not guaranteed, though. It could be 64 bit as well.
/* do it one word at a time (32 bits or 64 bits) if possible
Wolfgang Denk w...@denx.de wrote on 08/10/2009 14:49:15:
Dear Joakim Tjernlund,
In message OF26FEA2CB.36E102EE-ONC1257649.0031301D-C1257649.
0031e...@transmode.se you wrote:
How about:
cl = 0;
for (i=0; isizeof(long); ++i) {
cl = 8;
cl |= c
Wolfgang Denk w...@denx.de wrote on 08/10/2009 14:44:07:
Dear Joakim Tjernlund,
In message OF5F1602B1.C165074D-ONC1257649.0030F813-C1257649.
00311...@transmode.se you wrote:
Could you next time _please_ add this v3 information to the
Subject:, say as [PATCH v3] relocation
On Fri, Oct 9, 2009 at 9:27 AM, J. William Campbell
jwilliamcampb...@comcast.net wrote:
Graeme Russ wrote:
On Fri, Oct 9, 2009 at 2:58 AM, J. William Campbell
jwilliamcampb...@comcast.net wrote:
Graeme Russ wrote:
Out of curiosity, I wanted to see just how much of a size
On Wed, Oct 7, 2009 at 5:55 PM, Wolfgang Denk w...@denx.de wrote:
Dear Graeme Russ,
In message d66caabb0910061824s4165d33bu5d5213f6783c0...@mail.gmail.com
you wrote:
I think that even the -mrelocatable / .fixup method may not be needed at
all. -pie / -pic used by themselves
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.tjernl...@transmode.se
---
So here is the latest
Peter Tyser pty...@xes-inc.com wrote on 08/10/2009 01:49:40:
Hi Jocke,
v2: included ppc4xx too.
Looks like cpu/74xx_7xx is missing too:(
Yeah, the cpu directory is a mess. Sending
a new version.
cpu/mpc512x/start.S |6 --
cpu/mpc5xx/start.S |6 --
Wolfgang Denk w...@denx.de wrote on 06/10/2009 10:58:53:
Dear Peter Tyser,
In message 1254784811.24664.968.ca...@localhost.localdomain you wrote:
1. is just a small fix the the existing asm reloc functions. Pretty much
ready but needs some linker tweeks it seems. No idea if other
Wolfgang Denk w...@denx.de wrote on 03/10/2009 10:13:45:
Dear Jocke Peter,
In message OF1F14A150.6DF103F0-ONC125763F.00559936-C125763F.
0055d...@transmode.se you wrote:
ehh, that is strange. Did you run a make clean in between?
Do you see any bl _global_offset_tab...@local-4 if you
Wolfgang Denk w...@denx.de wrote on 03/10/2009 14:13:57:
Dear Joakim Tjernlund,
In message OF3474ED49.C18DA041-ONC1257644.0033ADEB-C1257644.
00341...@transmode.se you wrote:
It seems discussion stopped here. Is it correct forme to assume that
there is no patch available yet
Graeme Russ graeme.r...@gmail.com wrote on 28/09/2009 01:23:36:
On Mon, Sep 28, 2009 at 2:18 AM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Graeme Russ graeme.r...@gmail.com wrote on 27/09/2009 15:52:38:
On Sun, Sep 27, 2009 at 11:15 PM, Joakim Tjernlund
joakim.tjernl
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 06:31:28:
On Sun, 2009-09-27 at 15:15 +0200, Joakim Tjernlund wrote:
Wolfgang Denk w...@denx.de wrote on 23/09/2009 20:23:14:
Dear Peter Tyser,
In message 1253710639.3968.19.ca...@ptyser-laptop you wrote:
My fix
Seems to me that the only need for -ffixed-r14 is to find
transfer_to_handler from whithin an IRQ.
Add transfer_to_handler to the trap relocation so the need for a GOT
access in IRQ context goes away.
NOTE: This will break other PPC archs until their start.S is
updated accordingly.
Comments?
---
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 14:45:46:
On Mon, 2009-09-28 at 09:34 +0200, Joakim Tjernlund wrote:
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 06:31:28:
On Sun, 2009-09-27 at 15:15 +0200, Joakim Tjernlund wrote:
Wolfgang Denk w...@denx.de wrote on 23/09
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 14:45:46:
On Mon, 2009-09-28 at 09:34 +0200, Joakim Tjernlund wrote:
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 06:31:28:
On Sun, 2009-09-27 at 15:15 +0200, Joakim Tjernlund wrote:
Wolfgang Denk w...@denx.de wrote on 23/09
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 16:29:15:
Anyhow, I have also been thinking/working on making U-boot
fully PIC and reached a important conclusion. The GOT holds absolute
ptr values and there is not much one can do about it sans modifying
gcc.
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 17:08:58:
Peter, I just discovered that my gcc 3.4.6 allows me to use -mrelocatable
with -fpie
-fpie is about the same as -fpic and -fPIE is similar to -fPIC
-fpie generates smaller code so one could consider using -fpie and
Peter Tyser pty...@xes-inc.com wrote on 28/09/2009 17:08:58:
Peter, I just discovered that my gcc 3.4.6 allows me to use -mrelocatable
with -fpie
-fpie is about the same as -fpic and -fPIE is similar to -fPIC
-fpie generates smaller code so one could consider using -fpie and
Wolfgang Denk w...@denx.de wrote on 23/09/2009 20:23:14:
Dear Peter Tyser,
In message 1253710639.3968.19.ca...@ptyser-laptop you wrote:
My fix to the linker script was to change:
__bss_start = .;
into:
__bss_start = . | 4;
ie, a big hack, but it did work:) I'll take a peek at a
Graeme Russ graeme.r...@gmail.com wrote on 27/09/2009 15:52:38:
On Sun, Sep 27, 2009 at 11:15 PM, Joakim Tjernlund
joakim.tjernl...@transmode.se wrote:
Wolfgang Denk w...@denx.de wrote on 23/09/2009 20:23:14:
Dear Peter Tyser,
In message 1253710639.3968.19.ca...@ptyser-laptop you
On Thursday 24 September 2009 16:28:39 Peter Tyser wrote:
All patches applied to reloc branch. Thanks for all this work.
So far the only issue I've seen (I didn't do any actual testing yet,
though) is the missing increment to the XF_VERSION value to indicate
incompatibility with
Dear Joakim Tjernlund,
In message 1253178437-32398-1-git-send-email-joakim.tjernl...@transmode.se
you wrote:
After issuing a STOP one must wait until the STOP has completed
on the bus before doing something new to the controller.
Also add an extra read of SR as the manual mentions
Heiko Schocher heiko.schoc...@invitel.hu wrote on 23/09/2009 11:02:09:
Hello Joakim,
Joakim Tjernlund wrote:
Dear Joakim Tjernlund,
In message 1253178437-32398-1-git-send-email-
joakim.tjernl...@transmode.se you wrote:
After issuing a STOP one must wait until the STOP has completed
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.tjernl...@transmode.se
---
I have only tested
Stefan Roese s...@denx.de wrote on 23/09/2009 14:24:34:
On Wednesday 23 September 2009 13:51:46 Joakim Tjernlund wrote:
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
Peter Tyser pty...@xes-inc.com wrote on 23/09/2009 14:17:51:
On Wed, 2009-09-23 at 13:51 +0200, Joakim Tjernlund wrote:
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
)
wants to play some more. I will answer questions though.
From 684443ce6870eac2878026e47cc107fbfcdefc02 Mon Sep 17 00:00:00 2001
From: Joakim Tjernlund joakim.tjernl...@transmode.se
Date: Wed, 23 Sep 2009 18:41:44 +0200
Subject: [PATCH] relocation: Use C as much as possible to do relocation
This series attempts to fix relocation to RAM for ppc boards.
I split the patches up pretty liberally, let me know if you'd like
them organized differently.
I tried to be thorough during the changes (especially #1), let me
know if I missed anything, there's lots of linker scripts for ppc
I can't find a way to get at uec_info_t/STD_UEC_INFO from my board_eth_init()
in current u-boot. Am I missing something?
Also
drivers/qe/uec.h:int uec_initialize(bd_t *bis, uec_info_t *uec_info);
include/netdev.h:int uec_initialize(int index);
different prototypes for the same function.
__i2c_read always ends with a STOP condition thereby releasing
the bus. It is cleaner to do the STOP magic in i2c_read(), like
i2c_write() does. This may also help future multimaster systems which
wants to hold on to the bus until all transactions are finished.
Signed-off-by: Joakim Tjernlund
Anton Vorontsov avoront...@ru.mvista.com wrote on 22/09/2009 15:51:17:
From:
Anton Vorontsov avoront...@ru.mvista.com
To:
Joakim Tjernlund joakim.tjernl...@transmode.se
Cc:
u-boot@lists.denx.de, kim.phill...@freescale.com
Date:
22/09/2009 15:51
Subject:
Re: [U-Boot] MPC83xx
Ben Warren biggerbadder...@gmail.com wrote on 22/09/2009 18:55:22:
Anton Vorontsov wrote:
On Tue, Sep 22, 2009 at 04:03:16PM +0200, Joakim Tjernlund wrote:
[...]
Also
drivers/qe/uec.h:int uec_initialize(bd_t *bis, uec_info_t *uec_info);
include/netdev.h:int uec_initialize(int index
Wolfgang Grandegger w...@denx.de wrote on 21/09/2009 12:53:36:
Hi Joakim,
Joakim Tjernlund wrote:
The latest AN2919 has changed the way FDR/DFSR should be calculated.
Update the driver according to spec. However, Condition 2
is not accounted for as it is not clear how to do so.
I
Wolfgang Grandegger w...@denx.de wrote on 21/09/2009 13:59:04:
Joakim Tjernlund wrote:
Wolfgang Grandegger w...@denx.de wrote on 21/09/2009 12:53:36:
Hi Joakim,
Joakim Tjernlund wrote:
The latest AN2919 has changed the way FDR/DFSR should be calculated.
Update the driver according
Peter Tyser pty...@xes-inc.com wrote on 17/09/2009 19:29:18:
From:
Peter Tyser pty...@xes-inc.com
To:
Joakim Tjernlund joakim.tjernl...@transmode.se
Cc:
pieter.voorthuij...@prodrive.nl, u-boot@lists.denx.de, Wolfgang Denk
w...@denx.de
Date:
17/09/2009 19:29
Subject:
Re: [U
Peter Tyser pty...@xes-inc.com wrote on 18/09/2009 16:28:35:
On Thu, 2009-09-17 at 09:06 +0200, Joakim Tjernlund wrote:
When preparing the ppc relocation patches I noticed that the gcc
-mrelocatable compiler flag increases the .reloc section by 3 or 4
Kbytes. I did
Peter Tyser pty...@xes-inc.com wrote on 18/09/2009 17:21:57:
Sorry, I don't have an example. Just a guess, weak function references:
void weak_fun(void) __attribute__ ((weak));
if (weak_fun)
weak_fun();
Using default weak functions as well as overridden weak functions both
Peter Tyser pty...@xes-inc.com wrote on 18/09/2009 18:24:48:
Sorry, I don't have an example. Just a guess, weak function references:
void weak_fun(void) __attribute__ ((weak));
if (weak_fun)
weak_fun();
Using default weak functions as well as overridden weak
Wolfgang Grandegger w...@denx.de wrote on 17/09/2009 08:36:32:
mpc8321, I2C bus is between 34KHz and 100KHz, CSB is 133.332 MHz
OK, where can I find the new AN2819? I found Document Number: AN2919,
Rev. 5, 12/2008.
That is the one I found too.
Jocke
Heiko Schocher h...@denx.de wrote on 17/09/2009 08:00:34:
Hello Joakim,
Hi Heiko
Joakim Tjernlund wrote:
The latest AN2819 has changed the way FDR/DFSR should be calculated.
Update the driver according to spec. However, Condition 2
is not accounted for as it is not clear how to do so
When preparing the ppc relocation patches I noticed that the gcc
-mrelocatable compiler flag increases the .reloc section by 3 or 4
Kbytes. I did a compile test, and this increase pushes the ALPR board
back over 256K (it recently had the same size issue, see ppc4xx: Remove
some features
Wolfgang Denk w...@denx.de wrote on 17/09/2009 09:50:51:
Dear Joakim Tjernlund,
In message OFF85C09CB.2A4A1999-ONC1257634.0025DF59-C1257634.
00270...@transmode.se you wrote:
One day we can fit the whole relocation table into built-in CPU memory,
hopefully
that will make it possible
Some boards need a higher DFSR value than the spec currently
recommends so give these boards the means to define there own.
For completeness, add CONFIG_FSL_I2C_CUSTOM_FDR too.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c | 14 +++---
1 files
The latest AN2919 has changed the way FDR/DFSR should be calculated.
Update the driver according to spec. However, Condition 2
is not accounted for as it is not clear how to do so.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c | 90
the I2C bus.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c | 12
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c
index 47bbf79..56f9680 100644
--- a/drivers/i2c/fsl_i2c.c
+++ b
Hello Joakim,
Joakim Tjernlund wrote:
After issuing a STOP one must wait until the STOP has completed
on the bus before doing something new to the controller.
Also add an extra read of SR as the manual mentions doing that
is a good idea.
Remove surplus write of CR just before
Wolfgang Denk w...@denx.de wrote on 17/09/2009 12:15:42:
Dear Joakim Tjernlund,
In message OFA0E17029.E568D101-ONC1257634.002EFBFD-C1257634.
002f9...@transmode.se you wrote:
One day we can fit the whole relocation table into built-in CPU memory,
hopefully
that will make
Wolfgang Denk w...@denx.de wrote on 17/09/2009 14:53:59:
Dear Joakim Tjernlund,
Dear me :)
In message OF680476D5.A9D9D259-ONC1257634.00449AC4-C1257634.
00451...@transmode.se you wrote:
But why has the GOT table to fit into built-in CPU memory? When we
are about to relocate U-Boot
Joakim Tjernlund wrote:
+#ifdef CONFIG_FSL_I2C_CUSTOM_FDR
+ fdr = CONFIG_FSL_I2C_CUSTOM_FDR;
+ speed = i2c_clk / divider; /* Fake something */
How about setting 'speed' to CONFIG_SYS_I2C_SPEED?
Naa, if you want that you just pass CONFIG_SYS_I2C_SPEED to
i2c_init
Graeme Russ graeme.r...@gmail.com wrote on 17/09/2009 23:57:56:
On Thu, Sep 17, 2009 at 10:53 PM, Wolfgang Denk w...@denx.de wrote:
Dear Joakim Tjernlund,
In message OF680476D5.A9D9D259-ONC1257634.00449AC4-C1257634.
00451...@transmode.se you wrote:
But why has the GOT table to fit
Some boards need a higher DFSR value than the spec currently
recommends so give these boards the means to define there own.
For completeness, add CONFIG_FSL_I2C_CUSTOM_DFR too.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c | 14 +++---
1 files
The latest AN2819 has changed the way FDR/DFSR should be calculated.
Update the driver according to spec. However, Condition 2
is not accounted for as it is not clear how to do so.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c | 88
the I2C bus.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c | 12
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c
index 47bbf79..56f9680 100644
--- a/drivers/i2c/fsl_i2c.c
+++ b
Wolfgang Grandegger w...@denx.de wrote on 16/09/2009 12:22:05:
Joakim Tjernlund wrote:
Timur Tabi ti...@freescale.com wrote on 15/09/2009 21:04:47:
Joakim Tjernlund wrote:
No, the impact on speed from DFSR is pretty small so it will
be close enough.
How small?
From the app note
Wolfgang Grandegger w...@grandegger.com wrote on 16/09/2009 13:45:03:
Joakim Tjernlund wrote:
Wolfgang Grandegger w...@denx.de wrote on 16/09/2009 12:22:05:
Joakim Tjernlund wrote:
Timur Tabi ti...@freescale.com wrote on 15/09/2009 21:04:47:
Joakim Tjernlund wrote:
No, the impact
Wolfgang Grandegger w...@grandegger.com wrote on 15/09/2009 13:53:13:
Joakim Tjernlund wrote:
Wolfgang Grandegger wrote:
I did not follow the thread yet, sorry. I implemented AN2819 for Linux
(see http://lxr.linux.no/#linux+v2.6.31/drivers/i2c/busses/i2c-mpc.c)
some time ago using
the I2C bus.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c | 12
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c
index 47bbf79..59bfab6 100644
--- a/drivers/i2c/fsl_i2c.c
+++ b
Some boards need a higher DFSR value than the spec currently
recommends so give these boards the means to define there own.
Signed-off-by: Joakim Tjernlund joakim.tjernl...@transmode.se
---
drivers/i2c/fsl_i2c.c |9 ++---
1 files changed, 6 insertions(+), 3 deletions(-)
diff --git
I am using 2.6.30 and I think it is fairly equal to yours.
I am not using either property above so the linux i2c-mpc. driver falls back
to fdr=0x31 and dfsr=0x10 and this works well. It is u-boot that isn't
working.
However, I have found a few driver bugs in the u-boot driver and fixing
Joakim Tjernlund wrote:
Some boards need a higher DFSR value than the spec currently
recommends so give these boards the means to define there own.
Wow, that was fast :)
If you're going to do this, then you need to also define
CONFIG_FSL_I2C_CUSTOM_FSR and CONFIG_FSL_I2C_CUSTOM_SPEED
Timur Tabi ti...@freescale.com wrote on 15/09/2009 21:04:47:
Joakim Tjernlund wrote:
No, the impact on speed from DFSR is pretty small so it will
be close enough.
How small?
From the app note:
divisor = B * (A + ((3*C)/B)*2);
C is dfsr and 10 = A = 30, 16 = B = 2048
Considering
Timur Tabi ti...@freescale.com wrote on 15/09/2009 21:04:47:
Joakim Tjernlund wrote:
No, the impact on speed from DFSR is pretty small so it will
be close enough.
How small?
From the app note:
divisor = B * (A + ((3*C)/B)*2);
C is dfsr and 10 = A = 30, 16 = B = 2048
Wolfgang Grandegger wrote:
I did not follow the thread yet, sorry. I implemented AN2819 for Linux
(see http://lxr.linux.no/#linux+v2.6.31/drivers/i2c/busses/i2c-mpc.c)
some time ago using Timur's table approach. But there is no difference
between the table and the algorithm to calculate
Timur Tabi wrote:
Wolfgang Grandegger wrote:
I did not follow the thread yet, sorry. I implemented AN2819 for Linux
(see http://lxr.linux.no/#linux+v2.6.31/drivers/i2c/busses/i2c-mpc.c)
some time ago using Timur's table approach. But there is no difference
between the table and the
Timur Tabi ti...@freescale.com wrote on 10/09/2009 18:13:03:
Joakim Tjernlund wrote:
This calculation does not seem to match AN2919.
When I wrote the code, AN2919 was much smaller than what you have today.
Suppose one used only Table 7(almost what we have if you exclude dfsr
timur.t...@gmail.com wrote on 09/09/2009 16:24:15:
On Wed, Sep 9, 2009 at 4:19 AM, Joakim
Tjernlundjoakim.tjernl...@transmode.se wrote:
I wonder if this hides another problem too.
if the timeout hits, -1 is returned.
Then in i2c_read()/i2c_write() you have:
if
Timur Tabi ti...@freescale.com wrote on 10/09/2009 15:07:36:
Joakim Tjernlund wrote:
BTW, the fdr and dfsr calculations appears totally bogus. It seems
like the table is taken from some examples in AN2919 and it is pure luck
that it works most of the time. For me it does not work 100
Timur Tabi ti...@freescale.com wrote on 10/09/2009 15:29:35:
Joakim Tjernlund wrote:
A while back, someone posted a version of this code that computed the
values
of fdr/dfsr. I nack'd that patch because I thought the algorithm was too
Not so sure about that, but I haven't tried
Timur Tabi ti...@freescale.com wrote on 10/09/2009 15:29:35:
Joakim Tjernlund wrote:
A while back, someone posted a version of this code that computed the
values
of fdr/dfsr. I nack'd that patch because I thought the algorithm was too
Not so sure about that, but I haven't tried
Timur Tabi ti...@freescale.com wrote on 10/09/2009 17:22:38:
Joakim Tjernlund wrote:
Come on, just because my board is somewhat broken, it doesn't mean the
driver is correct. If I define my speed to 100KHz I get
a DFSR of 22, way over what is allowed for my board.
Why is a value of 22
Timur Tabi ti...@freescale.com wrote on 10/09/2009 17:26:29:
Joakim Tjernlund wrote:
Looking a bit harder at the table I don't understand some entries, where
does
the entries with dfsr != 1 come from? They don't look like any table in
AN2919
They're all calculated. I entered
Timur Tabi ti...@freescale.com wrote on 10/09/2009 18:13:03:
Joakim Tjernlund wrote:
This calculation does not seem to match AN2919.
When I wrote the code, AN2919 was much smaller than what you have today.
Suppose one used only Table 7(almost what we have if you exclude dfsr!= 1)
Table
Timur Tabi ti...@freescale.com wrote on 10/09/2009 18:13:03:
Joakim Tjernlund wrote:
This calculation does not seem to match AN2919.
When I wrote the code, AN2919 was much smaller than what you have today.
Suppose one used only Table 7(almost what we have if you exclude dfsr!= 1)
Table
Dear Peter,
In message 1252426573.6005.253.ca...@localhost.localdomain you wrote:
Going over the emails and my own testing, it looks the following
versions worked:
...
Thanks for the detailed analysis.
I remember that gcc-3.4.x has always been marked as suspicious in
our tests, so
I wonder if this hides another problem too.
if the timeout hits, -1 is returned.
Then in i2c_read()/i2c_write() you have:
if (i2c_wait4bus() = 0
i2c_write_addr(dev, I2C_WRITE_BIT, 0) != 0
__i2c_write(a[4 - alen], alen) == alen)
i = 0; /* No error
timur.t...@gmail.com wrote on 09/09/2009 16:24:15:
On Wed, Sep 9, 2009 at 4:19 AM, Joakim
Tjernlundjoakim.tjernl...@transmode.se wrote:
I wonder if this hides another problem too.
if the timeout hits, -1 is returned.
Then in i2c_read()/i2c_write() you have:
if (i2c_wait4bus()
The SYS_CLK_IN of MPC8569MDS is 66.66MHz,
The DDR_CLK_IN is same with SYS_CLK_IN in 8569 processor.
so, change the SYS_CLK_IN from 66MHz to 66.66MHz.
Signed-off-by: Dave Liu dave...@freescale.com
---
include/configs/MPC8569MDS.h |4 ++--
1 files changed, 2 insertions(+), 2
I get this when compiling on a fairly recent u-boot:
mpc8xxx_spi.c: In function `spi_init':
mpc8xxx_spi.c:70: error: syntax error before '*' token
mpc8xxx_spi.c:76: error: `spi' undeclared (first use in this function)
mpc8xxx_spi.c:76: error: (Each undeclared identifier is reported only
once
Kumar Gala ga...@kernel.crashing.org wrote on 27/04/2009 16:12:35:
From:
Kumar Gala ga...@kernel.crashing.org
To:
Joakim Tjernlund joakim.tjernl...@transmode.se
Cc:
Scott Wood scottw...@freescale.com, u-boot@lists.denx.de
Date:
27/04/2009 16:15
Subject:
Re: [U-Boot
Kumar Gala ga...@kernel.crashing.org wrote on 29/04/2009 14:35:19:
I think I got the mapping of memory space now, thanks.
A few questions though. I have noted that some boards map the PCI IO
space
to 0x0 and some use the same address space as the CPU. If I use
the CPU address space
On Wed, 25 Feb 2009 10:30:26 +0100
Joakim Tjernlund joakim.tjernl...@transmode.se wrote:
1, 2 and 5
Acked-by: Joakim Tjernlund joakim.tjernl...@transmode.se
Don't understand cpo and haven't looked at 3 so
I can't say anything useful.
Did you test the patch on your
requirement for tWTR.
Reported-by: Joakim Tjernlund joakim.tjernl...@transmode.se
Signed-off-by: Dave Liu dave...@freescale.com
Acked-by: Joakim Tjernlund joakim.tjernl...@transmode.se
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MT9HTF6472CHY-667D1 DIMMs test passed on
MPC837xEMDS platform at 266MHz/333MHz/400MHz data rate.
Reported-by: Joakim Tjernlund joakim.tjernl...@transmode.se
Signed-off-by: Dave Liu dave...@freescale.com
1, 2 and 5
Acked-by: Joakim Tjernlund joakim.tjernl...@transmode.se
Don't understand cpo and haven't
On Tue, 17 Feb 2009 20:25:03 +0100
Joakim Tjernlund joakim.tjernl...@transmode.se wrote:
The spd code for mpc83xx is so broken it isn't funny. This is what I
had
to do to get my
Micron MT47H64M16-3. This isn't against current u-boot, but it is a
start.
well it applies
Kim Phillips kim.phill...@freescale.com wrote on 18/02/2009 02:35:50:
On Tue, 17 Feb 2009 20:25:03 +0100
Joakim Tjernlund joakim.tjernl...@transmode.se wrote:
The spd code for mpc83xx is so broken it isn't funny. This is what I
had
to do to get my
Micron MT47H64M16-3. This isn't
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