Re: [PATCH 1/2 v1.03] Add support for DWC OTG HCD function.

2010-10-07 Thread Feng Kan
Hi Greg:

We have obtained GPL 2 only header from Synopsis. We have also identified all
parties that contributed to the code base and contacted them regarding
license change.
Any party that we could not reach, we will remove the patch from the submission.
Let me know if this is sufficient for resubmission.

Thanks
Feng

On Thu, Jul 29, 2010 at 8:36 PM, Greg KH gre...@suse.de wrote:
 On Thu, Jul 29, 2010 at 07:02:44PM -0700, Feng Kan wrote:
 On Thu, Jul 29, 2010 at 6:26 PM, Greg KH gre...@suse.de wrote:
  On Thu, Jul 29, 2010 at 06:19:25PM -0700, Feng Kan wrote:
  Hi Greg:
 
  On Thu, Jul 29, 2010 at 5:50 PM, Greg KH gre...@suse.de wrote:
   On Thu, Jul 29, 2010 at 05:14:59PM -0700, Feng Kan wrote:
   Hi Greg:
  
   We will change to a BSD 3 clause license header. Our legal counsel is
   talking to Synopsis to make this change.
  
   Why BSD? ??You do realize what that means when combined within the body
   of the kernel, right?
  
 
  FKAN: We will shoot for a dual BSD/GPL license such as the one in the HP
  ?? ?? ?? ?? ?? ??Hil driver.
 
  What specific driver is this?

 FKAN: this is driver/input/serio/hil_mlc.c and quite a number of others.

 Ok, thanks.

 Are you _sure_ that you didn't take any existing GPL code and put it
 into this driver when making it?  Did all contributors to the code
 release their contributions under both licenses?

  And are you sure that all of the contributors to the code agree with
  this licensing change? ??Are you going to require contributors to
  dual-license their changes?
 
  If so, why keep it BSD, what does that get you?

 FKAN: for one thing, to make it future proof on other submissions.

 What do you mean by this?  What can you do with this code other than use
 it on a Linux system?  You can't put it into any other operating system
 with a different license, can you?

   Are you going to be expecting others to contribute back to the code
   under this license, or will you accept the fact that future
   contributions from the community will cause the license to change?
 
 
  You didn't answer this question, which is a very important one before I
  can accept this driver.

 FKAN: Yes, all of the above. Our legal is working on that. I thought by 
 default
            GPL defines the above statement.

 The GPL does, but as you are trying to dual-license the code, you have
 to be careful about how you accept changes, and under what license.
 It's a lot more work than I think you realize.  What process do you have
 in place to handle this?

   We will resubmit once this is in place. Please let me know if you have
   any additional concerns.
  
   My main concern is that you, and everyone else involved in the driver,
   never considered the license of the code in the first place and expected
   the kernel community to accept it as-is, placing the problem on us.
 
  FKAN: Please don't think this is the case, we gone through this exercise
  ?? ?? ?? ?? ?? with Denx.
 
  What is Denx?

 FKAN: U-Boot Denx.de

 Ah, thanks.

  We had legal looking into the header before submission
  ?? ?? ?? ?? ?? to them and the kernel.
 
  Then what happened here? ??Just curious as to how the driver was public
  for so long before someone realized this.
 

 FKAN:  this was few years back. At the time we had the header changed
            so it was BSD like to be accepted by Denx.

   What will be done in the future to prevent this from happening again?
 
  FKAN: agreed, once bitten  :)
 
  That didn't answer the question :)

 FKAN: we have a system of checks for every patch that goes out. I will send
            out a guideline to all reviewer to make sure the header
 follow kernel precedence.

 But you took this code from a different vendor, are you able to properly
 identify the code contributions to this base and what license it is
 under and where they got it from?

            Legal is quite aware of the issue now too.

 As they should be :)

 Please reconsider the dual licensing unless you really are ready to
 handle the implications of it.

 thanks,

 greg k-h

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Re: [PATCH 1/2 v1.03] Add support for DWC OTG HCD function.

2010-07-29 Thread Feng Kan
Hi Greg:

We will change to a BSD 3 clause license header. Our legal counsel is
talking to Synopsis to make this change. We will resubmit once this
is in place. Please let me know if you have any additional concerns.

Feng Kan
Applied Micro

On Mon, Jul 26, 2010 at 4:16 PM, Greg KH gre...@suse.de wrote:
 On Mon, Jul 26, 2010 at 04:05:49PM -0700, Feng Kan wrote:
 Hi Greg:

 We are having our legal revisit this again. What would you advise us
 to do at this point?

 I thought I was very clear below as to what is needed.

 Disclose the agreement or have someone with legal authority reply this
 thread.

 Neither will resolve the end issue, right?

 Perhaps something in the header that states Applied Micro verified
 with Synopsys to use this code for GPL purpose.

 No, that will just make it messier.  Someone needs to delete all of the
 mess in the file, put the proper license information for what the code
 is being licensed under (whatever it is), and provide a signed-off-by
 from a person from Synopsys and APM that can speak for the company that
 they agree that the code can properly be placed into the Linux kernel.

 thanks,

 greg k-h




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Re: [PATCH 1/2 v1.03] Add support for DWC OTG HCD function.

2010-07-29 Thread Feng Kan
Hi Greg:

On Thu, Jul 29, 2010 at 5:50 PM, Greg KH gre...@suse.de wrote:
 On Thu, Jul 29, 2010 at 05:14:59PM -0700, Feng Kan wrote:
 Hi Greg:

 We will change to a BSD 3 clause license header. Our legal counsel is
 talking to Synopsis to make this change.

 Why BSD?  You do realize what that means when combined within the body
 of the kernel, right?


FKAN: We will shoot for a dual BSD/GPL license such as the one in the HP
   Hil driver.

 Are you going to be expecting others to contribute back to the code
 under this license, or will you accept the fact that future
 contributions from the community will cause the license to change?

 We will resubmit once this is in place. Please let me know if you have
 any additional concerns.

 My main concern is that you, and everyone else involved in the driver,
 never considered the license of the code in the first place and expected
 the kernel community to accept it as-is, placing the problem on us.

FKAN: Please don't think this is the case, we gone through this exercise
  with Denx. We had legal looking into the header before submission
  to them and the kernel.


 What will be done in the future to prevent this from happening again?

FKAN: agreed, once bitten  :)


 thanks,

 greg k-h




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Re: [PATCH 1/2 v1.03] Add support for DWC OTG HCD function.

2010-07-29 Thread Feng Kan
On Thu, Jul 29, 2010 at 6:26 PM, Greg KH gre...@suse.de wrote:
 On Thu, Jul 29, 2010 at 06:19:25PM -0700, Feng Kan wrote:
 Hi Greg:

 On Thu, Jul 29, 2010 at 5:50 PM, Greg KH gre...@suse.de wrote:
  On Thu, Jul 29, 2010 at 05:14:59PM -0700, Feng Kan wrote:
  Hi Greg:
 
  We will change to a BSD 3 clause license header. Our legal counsel is
  talking to Synopsis to make this change.
 
  Why BSD?  You do realize what that means when combined within the body
  of the kernel, right?
 

 FKAN: We will shoot for a dual BSD/GPL license such as the one in the HP
            Hil driver.

 What specific driver is this?

FKAN: this is driver/input/serio/hil_mlc.c and quite a number of others.


 And are you sure that all of the contributors to the code agree with
 this licensing change?  Are you going to require contributors to
 dual-license their changes?

 If so, why keep it BSD, what does that get you?

FKAN: for one thing, to make it future proof on other submissions.


  Are you going to be expecting others to contribute back to the code
  under this license, or will you accept the fact that future
  contributions from the community will cause the license to change?


 You didn't answer this question, which is a very important one before I
 can accept this driver.

FKAN: Yes, all of the above. Our legal is working on that. I thought by default
   GPL defines the above statement.


  We will resubmit once this is in place. Please let me know if you have
  any additional concerns.
 
  My main concern is that you, and everyone else involved in the driver,
  never considered the license of the code in the first place and expected
  the kernel community to accept it as-is, placing the problem on us.

 FKAN: Please don't think this is the case, we gone through this exercise
           with Denx.

 What is Denx?

FKAN: U-Boot Denx.de


 We had legal looking into the header before submission
           to them and the kernel.

 Then what happened here?  Just curious as to how the driver was public
 for so long before someone realized this.


FKAN:  this was few years back. At the time we had the header changed
   so it was BSD like to be accepted by Denx.

  What will be done in the future to prevent this from happening again?

 FKAN: agreed, once bitten  :)

 That didn't answer the question :)

FKAN: we have a system of checks for every patch that goes out. I will send
   out a guideline to all reviewer to make sure the header
follow kernel precedence.
   Legal is quite aware of the issue now too.


 thanks,

 greg k-h




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Re: [PATCH 1/2 v1.03] Add support for DWC OTG HCD function.

2010-07-26 Thread Feng Kan
Hi Greg:

We are having our legal revisit this again. What would you advise us
to do at this
point? Disclose the agreement or have someone with legal authority
reply this thread.
Perhaps something in the header that states Applied Micro verified
with Synopsys
to use this code for GPL purpose.

Feng Kan

On Mon, Jul 26, 2010 at 3:08 PM, Greg KH gre...@suse.de wrote:
 On Mon, Jul 26, 2010 at 03:05:13PM -0700, Greg KH wrote:
 Please, someone needs to go run this past the Synopsys lawyers (yeah,
 sorry, that's horrible to do, but it needs to be done to get it
 correct.)

 Because of this, I'd like to get a lawyer's signed-off-by on the code as
 well just to verify that it's all ok.

 Or someone with the legal authority to verify that this is an action
 that Synopsys agrees with the license of the code now.  This usually
 means a VP or some such person that can act publicly for the company.

 thanks,

 greg k-h
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Re: [PATCH 1/9 v1.01] Add Synopsys DesignWare HS USB OTG Controller driver.

2010-07-13 Thread Feng Kan
Chuck:

Thanks for the information. Sorry that we missed the patch. It was not done
out of specific reason.
As you have commented, it is a very large patch with alot of changes. We
wanted to submit
the patch to make sure the fundamental structure of the driver align with
the kernel. Once that
is in place, additional patch will be easier. Fushen will make sure this
change is in place on
the next submission.

Thanks
Feng Kan


On Tue, Jul 13, 2010 at 3:16 PM, Chuck Meade ch...@theptrgroup.com wrote:

 On 07/12/2010 07:16 PM, Fushen Chen wrote:
  The DWC OTG driver module provides the initialization and cleanup
  entry points for the DWC OTG USB driver.
 
  Signed-off-by: Fushen Chen fc...@apm.com
  Signed-off-by: Mark Miesfeld mmiesf...@apm.com
  ---

 This reply is to the patch series, not just this 1/9 patch section.

 Fushen, why did you pick and choose which fixes to incorporate from the
 Denx
 tree's version of the dwc_otg driver?

 I'm not taking the time here to go through this multipart patch and check
 that
 you incorporated every fix, but I *did* randomly pick one fix that I made
 to that
 driver, to see if you incorporated it, and it appears you did not.
 I would have expected that you would have incorporated the fixes that were
 made
 to this driver in the Denx tree.

 The one that I checked is in the data toggle error interrupt handling, in
 handle_hc_chhltd_intr_dma() (see your 5/9 email in this patch series).  It
 looks
 like you left out the fix I made to this logic that averts an interrupt
 storm.

 I assume that since I checked one particular fix, and it was missing from
 your
 patch series, that there are likely more fixes you omitted.  Can you
 explain why
 you would leave this out, after Stefan asked you to incorporate the code
 changes
 made in the Denx tree's version of the driver?

 Chuck
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[PATCH] fix the problem where pcix node is probed again as pci node.

2010-03-30 Thread Feng Kan
From: Feng Kan f...@appliedmicro.com

The current matching scheme make the pci node match to pcix or pciex node.
To avoid the match, change the method so only one type of initialization
is called per node.

Signed-off-by: Feng Kan f...@appliedmicro.com
Signed-off-by: Tirumala R Marri tma...@appliedmicro.com
---
 arch/powerpc/sysdev/ppc4xx_pci.c |   14 --
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index 8aa3302..1e67c74 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -1842,14 +1842,16 @@ static int __init ppc4xx_pci_find_bridges(void)
 
ppc_pci_flags |= PPC_PCI_ENABLE_PROC_DOMAINS | PPC_PCI_COMPAT_DOMAIN_0;
 
+   for_each_compatible_node(np, NULL, ibm,plb-pci) {
+   if (of_device_is_compatible(np, ibm,plb-pcix))
+   ppc4xx_probe_pcix_bridge(np);
 #ifdef CONFIG_PPC4xx_PCI_EXPRESS
-   for_each_compatible_node(np, NULL, ibm,plb-pciex)
-   ppc4xx_probe_pciex_bridge(np);
+   else if (of_device_is_compatible(np, ibm,plb-pciex))
+   ppc4xx_probe_pciex_bridge(np);
 #endif
-   for_each_compatible_node(np, NULL, ibm,plb-pcix)
-   ppc4xx_probe_pcix_bridge(np);
-   for_each_compatible_node(np, NULL, ibm,plb-pci)
-   ppc4xx_probe_pci_bridge(np);
+   else
+   ppc4xx_probe_pci_bridge(np);
+   }
 
return 0;
 }
-- 
1.5.5

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RE: [PATCH 1/1] NDFC: add support for alternate ECC format for ndfc

2010-02-22 Thread Feng Kan
Hi Sean:
 
I will withdraw this patch. I had a talk with the U-Boot guys. The reason for 
this
patch was to support those guys that had their ECC ordering at (213) on the 
older
version of the kernel. Upgrading to (123) may be problematic. Since without a 
jtag
it would be a bit complex. 
 
I still think this NAND_ECC_SMC define is somewhat missleading. Given that
both 1-2-3 and 2-1-3 are supported by the correction routine.
Feng



From: Sean MacLennan [mailto:smaclen...@pikatech.com]
Sent: Sat 2/20/2010 5:11 PM
To: Feng Kan
Cc: linux-...@lists.infradead.org; linuxppc-...@ozlabs.org; Feng Kan
Subject: Re: [PATCH 1/1] NDFC: add support for alternate ECC format for ndfc



On Thu, 18 Feb 2010 15:11:18 -0800
Feng Kan f...@amcc.com wrote:

 This is to lock down the ordering in the correction routine against
 the calculate routine. Otherwise, incorrect define would cause ECC
 errors.

Did you actually find a 44x PPC core that is not NAND_ECC_SMS format?

Cheers,
   Sean


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RE: [PATCH 1/1] Fix ECC Correction bug for SMC ordering for NDFC driver.

2009-08-21 Thread Feng Kan
Yes, I have considered that. However, it would make the #define rather confusing
for the rest.

Cheers,
Feng


-Original Message-
From: Sean MacLennan [mailto:smaclen...@pikatech.com]
Sent: Fri 8/21/2009 11:55 AM
To: Feng Kan
Cc: linuxppc-...@ozlabs.org; linux-...@lists.infradead.org; Feng Kan
Subject: Re: [PATCH 1/1] Fix ECC Correction bug for SMC ordering for NDFC 
driver.
 
On Thu, 20 Aug 2009 17:19:17 -0700
Feng Kan f...@amcc.com wrote:

 Fix ECC Correction bug where the byte offset location were double
 fliped causing correction routine to toggle the wrong byte location
 in the ECC segment. The ndfc_calculate_ecc routine change the order
 of getting the ECC code.

It looks like another fix for this bug is to leave the current code
alone and turn off CONFIG_MTD_NAND_ECC_SMC.

This could be a better fix if this is the way u-boot currently works.
Has anybody verified if the current u-boot has the ECC problem?

Cheers,
   Sean

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Re: [U-Boot] NAND ECC Error with wrong SMC ording bug

2009-08-20 Thread Feng Kan

Hi Stefan:

We had a board with high number of correctable ECC errors. Which crashed 
the jffs when it

was miss correcting the wrong byte location.

Do you want me to submit a patch for this, or do you prefer to do it. I 
am submitting a patch

for linux right now.

Feng Kan
AMCC Software

On 08/19/2009 10:01 PM, Stefan Roese wrote:

On Thursday 20 August 2009 06:38:51 Sean MacLennan wrote:
   

I see other boards using SMC as well, can someone comment on the
change I am proposing.
Should I change the correction algorithm or the calculate function?
If the later is preferred
it would mean the change must be pushed in both U-Boot and Linux.
   

Odds are the calculate function is wrong. The correction algo is used
by many nand drivers, I *assume* it is correct. The calculate function
was set to agree with u-boot (1.3.0).
 

Yes, it seems that you changed the order in the calculation function while
reworking the NDFC driver for arch/powerpc. So we should probably change this
order back to the original version. And change it in U-Boot as well.

BTW: I didn't see any problems with ECC so far with the current code. Feng,
how did you spot this problem?

Cheers,
Stefan

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Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: off...@denx.de
   


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[PATCH 1/1] Fix ECC Correction bug for SMC ordering for NDFC driver.

2009-08-20 Thread Feng Kan
Fix ECC Correction bug where the byte offset location were double
fliped causing correction routine to toggle the wrong byte location
in the ECC segment. The ndfc_calculate_ecc routine change the order
of getting the ECC code.
/* The NDFC uses Smart Media (SMC) bytes order */
ecc_code[0] = p[2];
ecc_code[1] = p[1];
ecc_code[2] = p[3];
But in the Correction algorithm when calculating the byte offset
location, the b1 is used as the upper part of the address. Which
again reverse the order making the final byte offset address 
location incorrect.
byte_addr = (addressbits[b1]  4) + addressbits[b0];
The order is change to read it in straight and let the correction
function to revert it to SMC order.

Signed-off-by: Feng Kan f...@amcc.com
Acked-by: Victor Gallardo vgalla...@amcc.com
Acked-by: Prodyut Hazarika phazar...@amcc.com
---
 drivers/mtd/nand/ndfc.c |4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c
index 5906c40..d9d3e6e 100644
--- a/drivers/mtd/nand/ndfc.c
+++ b/drivers/mtd/nand/ndfc.c
@@ -101,8 +101,8 @@ static int ndfc_calculate_ecc(struct mtd_info *mtd,
wmb();
ecc = in_be32(ndfc-ndfcbase + NDFC_ECC);
/* The NDFC uses Smart Media (SMC) bytes order */
-   ecc_code[0] = p[2];
-   ecc_code[1] = p[1];
+   ecc_code[0] = p[1];
+   ecc_code[1] = p[2];
ecc_code[2] = p[3];
 
return 0;
-- 
1.5.5

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NAND ECC Error with wrong SMC ording bug

2009-08-19 Thread Feng Kan

Hi All:

It seems that the ECC correction is broken on the Linux with the 4xx 
NDFC driver.

It uses the SMC order when reading the ECC code. 2-1-3

static int ndfc_calculate_ecc(struct mtd_info *mtd,
  const u_char *dat, u_char *ecc_code)
{
struct ndfc_controller *ndfc = ndfc_ctrl;
uint32_t ecc;
uint8_t *p = (uint8_t *)ecc;

wmb();
ecc = in_be32(ndfc-ndfcbase + NDFC_ECC);
/* The NDFC uses Smart Media (SMC) bytes order */
ecc_code[0] = p[2];
ecc_code[1] = p[1];
ecc_code[2] = p[3];

return 0;
}

However, when in the correction function, the byte address order is 
again reverses

causing incorrect byte location.

 * performace it does not make any difference
 */
if (eccsize_mult == 1)
byte_addr = (addressbits[b0]  4) + 
addressbits[b1];
 The above really should be byte_addr = (addressbits[b1]  4) + 
addressbits[b0];


else
byte_addr = (addressbits[b2  0x3]  8) +
(addressbits[b1]  4) + 
addressbits[b0];

bit_addr = addressbits[b2  2];
/* flip the bit */
buf[byte_addr] ^= (1  bit_addr);
printk(KERN_INFO Corrected b[0] 0x%x b[1]0x%x\n, b0, b1);
printk(KERN_INFO cal ecc b[0] 0x%x b[1]0x%x\n, 
calc_ecc[0] , calc_ecc[1]);
printk(KERN_INFO read ecc b[0] 0x%x b[1]0x%x\n, 
read_ecc[0] , read_ecc[1]);

return 1;

I see other boards using SMC as well, can someone comment on the change 
I am proposing.
Should I change the correction algorithm or the calculate function? If 
the later is preferred

it would mean the change must be pushed in both U-Boot and Linux.

Feng Kan
AMCC Software
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Re: [PATCH 1/1 v1] powerpc44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support.

2009-08-17 Thread Feng Kan

Please do, much appreciated.

Thanks
Feng Kan
AMCC Software

On 08/17/2009 08:34 AM, Josh Boyer wrote:

On Wed, Aug 12, 2009 at 05:38:47PM -0700, Feng Kan wrote:
   

This patch adds support for the AMCC (AppliedMicro) PPC460SX Eiger evaluation 
board.

Signed-off-by: Tai Tri Nguyenttngu...@amcc.com
Acked-by: Feng Kanf...@amcc.com
Acked-by: Tirumala Marritma...@amcc.com
---
arch/powerpc/boot/dts/eiger.dts|  421 ++
arch/powerpc/configs/44x/eiger_defconfig   | 1200 
arch/powerpc/platforms/44x/Kconfig |   12 +
arch/powerpc/platforms/44x/ppc44x_simple.c |1 +
4 files changed, 1634 insertions(+), 0 deletions(-)
create mode 100644 arch/powerpc/boot/dts/eiger.dts
create mode 100644 arch/powerpc/configs/44x/eiger_defconfig
 


Thanks, this looks great.

If you have no objections, I will commit an updated defconfig against the
current kernel sources instead of the one attached.  Some of the options
will move around a bit, but there should be no overall changes.

josh
   


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Re: [PATCH 1/1 v1] powerpc44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support.

2009-08-13 Thread Feng Kan

Hi Felix:

Sorry the documentation seems a little miss leading. There is no harm 
with the bit
turned off to zero. Once the nand boot is over, we change the EBC to use 
the ready

signal, this bit does not affect performance anymore.

Thanks
Feng Kan


On 08/12/2009 11:14 PM, Felix Radensky wrote:

Hi,

Feng Kan wrote:
This patch adds support for the AMCC (AppliedMicro) PPC460SX Eiger 
evaluation board.


Signed-off-by: Tai Tri Nguyen ttngu...@amcc.com
Acked-by: Feng Kan f...@amcc.com
Acked-by: Tirumala Marri tma...@amcc.com
---
 arch/powerpc/boot/dts/eiger.dts|  421 ++
 arch/powerpc/configs/44x/eiger_defconfig   | 1200 


 arch/powerpc/platforms/44x/Kconfig |   12 +
 arch/powerpc/platforms/44x/ppc44x_simple.c |1 +
 4 files changed, 1634 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/boot/dts/eiger.dts
 create mode 100644 arch/powerpc/configs/44x/eiger_defconfig

diff --git a/arch/powerpc/boot/dts/eiger.dts 
b/arch/powerpc/boot/dts/eiger.dts

new file mode 100644
index 000..c4a934f
--- /dev/null
+++ b/arch/powerpc/boot/dts/eiger.dts
@@ -0,0 +1,421 @@
+/*
+ * Device Tree Source for AMCC (AppliedMicro) Eiger(460SX)
+ *
+ * Copyright 2009 AMCC (AppliedMicro) ttngu...@amcc.com
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed as is without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/ {
+#address-cells = 2;
+#size-cells = 1;
+model = amcc,eiger;
+compatible = amcc,eiger;
+dcr-parent = {/cpus/c...@0};
+
+aliases {
+ethernet0 = EMAC0;
+ethernet1 = EMAC1;
+ethernet2 = EMAC2;
+ethernet3 = EMAC3;
+serial0 = UART0;
+serial1 = UART1;
+};
+
+cpus {
+#address-cells = 1;
+#size-cells = 0;
+
+c...@0 {
+device_type = cpu;
+model = PowerPC,460SX;
+reg = 0x;
+clock-frequency = 0; /* Filled in by U-Boot */
+timebase-frequency = 0; /* Filled in by U-Boot */
+i-cache-line-size = 32;
+d-cache-line-size = 32;
+i-cache-size = 32768;
+d-cache-size = 32768;
+dcr-controller;
+dcr-access-method = native;
+};
+};
+
+memory {
+device_type = memory;
+reg = 0x 0x 0x; /* Filled in by 
U-Boot */

+};
+
+UIC0: interrupt-controller0 {
+compatible = ibm,uic-460sx,ibm,uic;
+interrupt-controller;
+cell-index = 0;
+dcr-reg = 0x0c0 0x009;
+#address-cells = 0;
+#size-cells = 0;
+#interrupt-cells = 2;
+};
+
+UIC1: interrupt-controller1 {
+compatible = ibm,uic-460sx,ibm,uic;
+interrupt-controller;
+cell-index = 1;
+dcr-reg = 0x0d0 0x009;
+#address-cells = 0;
+#size-cells = 0;
+#interrupt-cells = 2;
+interrupts = 0x1e 0x4 0x1f 0x4; /* cascade */
+interrupt-parent = UIC0;
+};
+
+UIC2: interrupt-controller2 {
+compatible = ibm,uic-460sx,ibm,uic;
+interrupt-controller;
+cell-index = 2;
+dcr-reg = 0x0e0 0x009;
+#address-cells = 0;
+#size-cells = 0;
+#interrupt-cells = 2;
+interrupts = 0xa 0x4 0xb 0x4; /* cascade */
+interrupt-parent = UIC0;
+};
+
+UIC3: interrupt-controller3 {
+compatible = ibm,uic-460sx,ibm,uic;
+interrupt-controller;
+cell-index = 3;
+dcr-reg = 0x0f0 0x009;
+#address-cells = 0;
+#size-cells = 0;
+#interrupt-cells = 2;
+interrupts = 0x10 0x4 0x11 0x4; /* cascade */
+interrupt-parent = UIC0;
+};
+
+SDR0: sdr {
+compatible = ibm,sdr-460sx;
+dcr-reg = 0x00e 0x002;
+};
+
+CPR0: cpr {
+compatible = ibm,cpr-460sx;
+dcr-reg = 0x00c 0x002;
+};
+
+plb {
+compatible = ibm,plb-460sx, ibm,plb4;
+#address-cells = 2;
+#size-cells = 1;
+ranges;
+clock-frequency = 0; /* Filled in by U-Boot */
+
+SDRAM0: sdram {
+compatible = ibm,sdram-460sx, ibm,sdram-405gp;
+dcr-reg = 0x010 0x002;
+};
+
+MAL0: mcmal {
+compatible = ibm,mcmal-460sx, ibm,mcmal2;
+dcr-reg = 0x180 0x62;
+num-tx-chans = 4;
+num-rx-chans = 32;
+#address-cells = 1;
+#size-cells = 1;
+interrupt-parent = UIC1;
+interrupts = /*TXEOB*/ 0x6 0x4
+/*RXEOB*/ 0x7 0x4
+/*SERR*/  0x1 0x4
+/*TXDE*/  0x2 0x4
+/*RXDE*/  0x3 0x4
+/*COAL TX0*/ 0x18 0x2
+/*COAL TX1*/ 0x19 0x2
+/*COAL TX2*/ 0x1a 0x2
+/*COAL TX3*/ 0x1b 0x2

[PATCH 1/1 v1] powerpc44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support.

2009-08-12 Thread Feng Kan
This patch adds support for the AMCC (AppliedMicro) PPC460SX Eiger evaluation 
board.

Signed-off-by: Tai Tri Nguyen ttngu...@amcc.com
Acked-by: Feng Kan f...@amcc.com
Acked-by: Tirumala Marri tma...@amcc.com
---
 arch/powerpc/boot/dts/eiger.dts|  421 ++
 arch/powerpc/configs/44x/eiger_defconfig   | 1200 
 arch/powerpc/platforms/44x/Kconfig |   12 +
 arch/powerpc/platforms/44x/ppc44x_simple.c |1 +
 4 files changed, 1634 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/boot/dts/eiger.dts
 create mode 100644 arch/powerpc/configs/44x/eiger_defconfig

diff --git a/arch/powerpc/boot/dts/eiger.dts b/arch/powerpc/boot/dts/eiger.dts
new file mode 100644
index 000..c4a934f
--- /dev/null
+++ b/arch/powerpc/boot/dts/eiger.dts
@@ -0,0 +1,421 @@
+/*
+ * Device Tree Source for AMCC (AppliedMicro) Eiger(460SX)
+ *
+ * Copyright 2009 AMCC (AppliedMicro) ttngu...@amcc.com
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed as is without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/ {
+   #address-cells = 2;
+   #size-cells = 1;
+   model = amcc,eiger;
+   compatible = amcc,eiger;
+   dcr-parent = {/cpus/c...@0};
+
+   aliases {
+   ethernet0 = EMAC0;
+   ethernet1 = EMAC1;
+   ethernet2 = EMAC2;
+   ethernet3 = EMAC3;
+   serial0 = UART0;
+   serial1 = UART1;
+   };
+
+   cpus {
+   #address-cells = 1;
+   #size-cells = 0;
+
+   c...@0 {
+   device_type = cpu;
+   model = PowerPC,460SX;
+   reg = 0x;
+   clock-frequency = 0; /* Filled in by U-Boot */
+   timebase-frequency = 0; /* Filled in by U-Boot */
+   i-cache-line-size = 32;
+   d-cache-line-size = 32;
+   i-cache-size = 32768;
+   d-cache-size = 32768;
+   dcr-controller;
+   dcr-access-method = native;
+   };
+   };
+
+   memory {
+   device_type = memory;
+   reg = 0x 0x 0x; /* Filled in by 
U-Boot */
+   };
+
+   UIC0: interrupt-controller0 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 0;
+   dcr-reg = 0x0c0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   };
+
+   UIC1: interrupt-controller1 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 1;
+   dcr-reg = 0x0d0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   interrupts = 0x1e 0x4 0x1f 0x4; /* cascade */
+   interrupt-parent = UIC0;
+   };
+
+   UIC2: interrupt-controller2 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 2;
+   dcr-reg = 0x0e0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   interrupts = 0xa 0x4 0xb 0x4; /* cascade */
+   interrupt-parent = UIC0;
+   };
+
+   UIC3: interrupt-controller3 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 3;
+   dcr-reg = 0x0f0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   interrupts = 0x10 0x4 0x11 0x4; /* cascade */
+   interrupt-parent = UIC0;
+   };
+
+   SDR0: sdr {
+   compatible = ibm,sdr-460sx;
+   dcr-reg = 0x00e 0x002;
+   };
+
+   CPR0: cpr {
+   compatible = ibm,cpr-460sx;
+   dcr-reg = 0x00c 0x002;
+   };
+
+   plb {
+   compatible = ibm,plb-460sx, ibm,plb4;
+   #address-cells = 2;
+   #size-cells = 1;
+   ranges;
+   clock-frequency = 0; /* Filled in by U-Boot */
+
+   SDRAM0: sdram {
+   compatible = ibm,sdram-460sx, ibm,sdram-405gp;
+   dcr-reg = 0x010 0x002;
+   };
+
+   MAL0: mcmal {
+   compatible = ibm,mcmal-460sx, ibm,mcmal2;
+   dcr-reg = 0x180 0x62;
+   num-tx-chans = 4;
+   num-rx-chans = 32;
+   #address-cells = 1;
+   #size-cells = 1;
+   interrupt-parent = UIC1

[PATCH 1/1 v1] powerpc44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support.

2009-08-12 Thread Feng Kan
This patch adds support for the AMCC (AppliedMicro) PPC460SX Eiger evaluation 
board.

Signed-off-by: Tai Tri Nguyen ttngu...@amcc.com
Acked-by: Feng Kan f...@amcc.com
Acked-by: Tirumala Marri tma...@amcc.com
---
 arch/powerpc/boot/dts/eiger.dts|  421 ++
 arch/powerpc/configs/44x/eiger_defconfig   | 1200 
 arch/powerpc/platforms/44x/Kconfig |   12 +
 arch/powerpc/platforms/44x/ppc44x_simple.c |1 +
 4 files changed, 1634 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/boot/dts/eiger.dts
 create mode 100644 arch/powerpc/configs/44x/eiger_defconfig

diff --git a/arch/powerpc/boot/dts/eiger.dts b/arch/powerpc/boot/dts/eiger.dts
new file mode 100644
index 000..c4a934f
--- /dev/null
+++ b/arch/powerpc/boot/dts/eiger.dts
@@ -0,0 +1,421 @@
+/*
+ * Device Tree Source for AMCC (AppliedMicro) Eiger(460SX)
+ *
+ * Copyright 2009 AMCC (AppliedMicro) ttngu...@amcc.com
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2.  This program is licensed as is without
+ * any warranty of any kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/ {
+   #address-cells = 2;
+   #size-cells = 1;
+   model = amcc,eiger;
+   compatible = amcc,eiger;
+   dcr-parent = {/cpus/c...@0};
+
+   aliases {
+   ethernet0 = EMAC0;
+   ethernet1 = EMAC1;
+   ethernet2 = EMAC2;
+   ethernet3 = EMAC3;
+   serial0 = UART0;
+   serial1 = UART1;
+   };
+
+   cpus {
+   #address-cells = 1;
+   #size-cells = 0;
+
+   c...@0 {
+   device_type = cpu;
+   model = PowerPC,460SX;
+   reg = 0x;
+   clock-frequency = 0; /* Filled in by U-Boot */
+   timebase-frequency = 0; /* Filled in by U-Boot */
+   i-cache-line-size = 32;
+   d-cache-line-size = 32;
+   i-cache-size = 32768;
+   d-cache-size = 32768;
+   dcr-controller;
+   dcr-access-method = native;
+   };
+   };
+
+   memory {
+   device_type = memory;
+   reg = 0x 0x 0x; /* Filled in by 
U-Boot */
+   };
+
+   UIC0: interrupt-controller0 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 0;
+   dcr-reg = 0x0c0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   };
+
+   UIC1: interrupt-controller1 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 1;
+   dcr-reg = 0x0d0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   interrupts = 0x1e 0x4 0x1f 0x4; /* cascade */
+   interrupt-parent = UIC0;
+   };
+
+   UIC2: interrupt-controller2 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 2;
+   dcr-reg = 0x0e0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   interrupts = 0xa 0x4 0xb 0x4; /* cascade */
+   interrupt-parent = UIC0;
+   };
+
+   UIC3: interrupt-controller3 {
+   compatible = ibm,uic-460sx,ibm,uic;
+   interrupt-controller;
+   cell-index = 3;
+   dcr-reg = 0x0f0 0x009;
+   #address-cells = 0;
+   #size-cells = 0;
+   #interrupt-cells = 2;
+   interrupts = 0x10 0x4 0x11 0x4; /* cascade */
+   interrupt-parent = UIC0;
+   };
+
+   SDR0: sdr {
+   compatible = ibm,sdr-460sx;
+   dcr-reg = 0x00e 0x002;
+   };
+
+   CPR0: cpr {
+   compatible = ibm,cpr-460sx;
+   dcr-reg = 0x00c 0x002;
+   };
+
+   plb {
+   compatible = ibm,plb-460sx, ibm,plb4;
+   #address-cells = 2;
+   #size-cells = 1;
+   ranges;
+   clock-frequency = 0; /* Filled in by U-Boot */
+
+   SDRAM0: sdram {
+   compatible = ibm,sdram-460sx, ibm,sdram-405gp;
+   dcr-reg = 0x010 0x002;
+   };
+
+   MAL0: mcmal {
+   compatible = ibm,mcmal-460sx, ibm,mcmal2;
+   dcr-reg = 0x180 0x62;
+   num-tx-chans = 4;
+   num-rx-chans = 32;
+   #address-cells = 1;
+   #size-cells = 1;
+   interrupt-parent = UIC1

RE: ppc405ex + gigabit ethernet

2009-07-06 Thread Feng Kan
Hi Lada:

Please contact supp...@amcc.com for additional help for the coalescing patch.

Feng Kan
AMCC Software


-Original Message-
From: linuxppc-dev-bounces+fkan=amcc@lists.ozlabs.org on behalf of Lada 
Podivin
Sent: Fri 7/3/2009 2:09 AM
To: Cote, Sylvain
Cc: linuxppc-...@ozlabs.org
Subject: Re: ppc405ex + gigabit ethernet
 
Hi Sylvain,

the interrupt coalescing sounds like good idea - I'm surprised this
feature is missing in the original ibm_newemac driver. You wrote you
had got this optimisation directly from AMCC. Is it part of any
framework? I'm just wondering how one can obtain it. I tried to find
any suitable patch but with no success - the old friend Google didn't
help this time :)

Thank you very much!
Lada
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Re: [PATCH 1/2] Added support for Designware SATA controller driver

2009-05-06 Thread Feng Kan

Hi Scott:

I agree with your statement, however this driver is wrapped with this 
AHB DMA controller.
It would be very hard for it to work on non 460EX platforms. I can 
expand the depend in

the future if it is available on more cores.

Thanks
Feng Kan

Scott Wood wrote:

Feng Kan wrote:

This adds support for the Designware SATA controller.

Signed-off-by: Feng Kan f...@amcc.com
Signed-off-by: Mark Miesfeld miesf...@gmail.com
---
 drivers/ata/Kconfig|   10 +
 drivers/ata/Makefile   |1 +
 drivers/ata/sata_dwc.c | 2053 


 3 files changed, 2064 insertions(+), 0 deletions(-)
 create mode 100644 drivers/ata/sata_dwc.c

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 0bcf264..c3d0b24 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -72,6 +72,16 @@ config SATA_FSL
 
   If unsure, say N.
 
+config SATA_DWC

+tristate DesignWare Cores SATA support
+ depends on 460EX


That depends looks too specific -- we don't want to grow a list if 
this controller gets added to other chips.


Only depend on what this driver actually needs in order to function.

-Scott


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[PATCH 3/3 v3] Add 4xx SATA dts node documentation

2009-05-06 Thread Feng Kan
Signed-off-by: Feng Kan f...@amcc.com
---
 Documentation/powerpc/dts-bindings/4xx/sata.txt |   24 +++
 1 files changed, 24 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/powerpc/dts-bindings/4xx/sata.txt

diff --git a/Documentation/powerpc/dts-bindings/4xx/sata.txt 
b/Documentation/powerpc/dts-bindings/4xx/sata.txt
new file mode 100644
index 000..3ce00d0
--- /dev/null
+++ b/Documentation/powerpc/dts-bindings/4xx/sata.txt
@@ -0,0 +1,24 @@
+AMCC SoC SATA Support 
+
+This following is only for the 460ex support for Designware SATA core
+
+Required properties:
+- compatible : amcc,sata-460ex.
+- reg : the first set defines SATA controller register, the second set
+is for the AHB DMA controller for SATA.
+- interrupt-parent: UIC3
+- interrupts: one for SATA and one for the DMA
+
+Notes:
+The SATA is only available when the first PCIe port is disabled.
+
+Example:
+
+SATA0: s...@bffd1000 {
+   compatible = amcc,sata-460ex;
+reg = 4 0xbffd1000 0x800 4 0xbffd0800 0x400;
+   interrupt-parent = UIC3;
+   interrupts = 0 4   /* SATA */
+ 5 4; /* AHBDMA */
+};
+
-- 
1.5.5

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[PATCH 2/3 v3] Added AMCC 460EX Canyonlands SATA support.

2009-05-06 Thread Feng Kan
Signed-off-by: Feng Kan f...@amcc.com
---
 arch/powerpc/boot/dts/canyonlands.dts  |8 ++
 arch/powerpc/platforms/44x/Makefile|4 +
 arch/powerpc/platforms/44x/amcc-sata.c |  125 
 3 files changed, 137 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/platforms/44x/amcc-sata.c

diff --git a/arch/powerpc/boot/dts/canyonlands.dts 
b/arch/powerpc/boot/dts/canyonlands.dts
index 5fd1ad0..b536223 100644
--- a/arch/powerpc/boot/dts/canyonlands.dts
+++ b/arch/powerpc/boot/dts/canyonlands.dts
@@ -163,6 +163,14 @@
 interrupts = 0x1e 4;
 };
 
+SATA0: s...@bffd1000 {
+compatible = amcc,sata-460ex;
+   reg = 4 0xbffd1000 0x800 4 0xbffd0800 0x400;
+interrupt-parent = UIC3;
+interrupts = 0 4   /* SATA */
+  5 4; /* AHBDMA */
+};
+
POB0: opb {
compatible = ibm,opb-460ex, ibm,opb;
#address-cells = 1;
diff --git a/arch/powerpc/platforms/44x/Makefile 
b/arch/powerpc/platforms/44x/Makefile
index 01f51da..fa0a999 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -4,3 +4,7 @@ obj-$(CONFIG_EBONY) += ebony.o
 obj-$(CONFIG_SAM440EP) += sam440ep.o
 obj-$(CONFIG_WARP) += warp.o
 obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
+ifeq ($(CONFIG_SATA_DWC),y)
+obj-$(CONFIG_CANYONLANDS) += amcc-sata.o
+endif
+
diff --git a/arch/powerpc/platforms/44x/amcc-sata.c 
b/arch/powerpc/platforms/44x/amcc-sata.c
new file mode 100644
index 000..fdda917
--- /dev/null
+++ b/arch/powerpc/platforms/44x/amcc-sata.c
@@ -0,0 +1,125 @@
+/*
+ * AMCC Canyonlands SATA wrapper
+ *
+ * Copyright 2008 DENX Software Engineering, Stefan Roese s...@denx.de
+ *
+ * Extract the resources (MEM  IRQ) from the dts file and put them
+ * into the platform-device struct for usage in the platform-device
+ * SATA driver.
+ *
+ */
+
+#include linux/platform_device.h
+#include linux/of_platform.h
+
+/*
+ * Resource template will be filled dynamically with the values
+ * extracted from the dts file
+ */
+static struct resource sata_resources[] = {
+   [0] = {
+   /* 460EX SATA registers */
+   .flags  = IORESOURCE_MEM,
+   },
+   [1] = {
+   /* 460EX AHBDMA registers */
+   .flags  = IORESOURCE_MEM,
+   },
+   [2] = {
+   /* 460EX SATA IRQ */
+   .flags  = IORESOURCE_IRQ,
+   },
+   [3] = {
+   /* 460EX AHBDMA IRQ */
+   .flags  = IORESOURCE_IRQ,
+   },
+};
+
+static u64 dma_mask = 0xULL;
+
+static struct platform_device sata_device = {
+   .name = sata-dwc,
+   .id = 0,
+   .num_resources = ARRAY_SIZE(sata_resources),
+   .resource = sata_resources,
+   .dev = {
+   .dma_mask = dma_mask,
+   .coherent_dma_mask = 0xULL,
+   }
+};
+
+static struct platform_device *ppc460ex_devs[] __initdata = {
+   sata_device,
+};
+
+static int __devinit ppc460ex_sata_probe(struct of_device *ofdev,
+const struct of_device_id *match)
+{
+   struct device_node *np = ofdev-node;
+   struct resource res;
+   const char *val;
+
+   /*
+* Check if device is enabled
+*/
+   val = of_get_property(np, status, NULL);
+   if (val  !strcmp(val, disabled)) {
+   printk(KERN_INFO SATA port disabled via device-tree\n);
+   return 0;
+   }
+
+   /*
+* Extract register address reange from device tree and put it into
+* the platform device structure
+*/
+   if (of_address_to_resource(np, 0, res)) {
+   printk(KERN_ERR %s: Can't get SATA register address\n,
+   __func__);
+   return -ENOMEM;
+   }
+   sata_resources[0].start = res.start;
+   sata_resources[0].end = res.end;
+
+   if (of_address_to_resource(np, 1, res)) {
+   printk(KERN_ERR %s: Can't get AHBDMA register address\n,
+   __func__);
+   return -ENOMEM;
+   }
+   sata_resources[1].start = res.start;
+   sata_resources[1].end = res.end;
+
+   /*
+* Extract IRQ number(s) from device tree and put them into
+* the platform device structure
+*/
+   sata_resources[2].start = sata_resources[2].end =
+   irq_of_parse_and_map(np, 0);
+   sata_resources[3].start = sata_resources[3].end =
+   irq_of_parse_and_map(np, 1);
+
+   return platform_add_devices(ppc460ex_devs, ARRAY_SIZE(ppc460ex_devs));
+}
+
+static int __devexit ppc460ex_sata_remove(struct of_device *ofdev)
+{
+   /* Nothing to do here */
+   return 0;
+}
+
+static const struct of_device_id

[PATCH 0/2] Added support for Designware SATA controller driver

2009-05-01 Thread Feng Kan
Fixed comment issue. Change goto statements to lower case. Also
fixed the Kconfig problem.

I don't know if I need to add Stefan Roese for the signoff, since he
did the of platform part.
Stefan, if you see this please let me know.

Feng Kan
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[PATCH 2/2] Added AMCC 460EX Canyonlands SATA support.

2009-05-01 Thread Feng Kan
This adds the OF platform support for the AMCC 460EX Canyonlands SATA port.

Signed-off-by: Feng Kan f...@amcc.com
---
 arch/powerpc/boot/dts/canyonlands.dts  |8 ++
 arch/powerpc/platforms/44x/Makefile|4 +
 arch/powerpc/platforms/44x/amcc-sata.c |  125 
 3 files changed, 137 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/platforms/44x/amcc-sata.c

diff --git a/arch/powerpc/boot/dts/canyonlands.dts 
b/arch/powerpc/boot/dts/canyonlands.dts
index 5fd1ad0..b536223 100644
--- a/arch/powerpc/boot/dts/canyonlands.dts
+++ b/arch/powerpc/boot/dts/canyonlands.dts
@@ -163,6 +163,14 @@
 interrupts = 0x1e 4;
 };
 
+SATA0: s...@bffd1000 {
+compatible = amcc,sata-460ex;
+   reg = 4 0xbffd1000 0x800 4 0xbffd0800 0x400;
+interrupt-parent = UIC3;
+interrupts = 0 4   /* SATA */
+  5 4; /* AHBDMA */
+};
+
POB0: opb {
compatible = ibm,opb-460ex, ibm,opb;
#address-cells = 1;
diff --git a/arch/powerpc/platforms/44x/Makefile 
b/arch/powerpc/platforms/44x/Makefile
index 01f51da..fa0a999 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -4,3 +4,7 @@ obj-$(CONFIG_EBONY) += ebony.o
 obj-$(CONFIG_SAM440EP) += sam440ep.o
 obj-$(CONFIG_WARP) += warp.o
 obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
+ifeq ($(CONFIG_SATA_DWC),y)
+obj-$(CONFIG_CANYONLANDS) += amcc-sata.o
+endif
+
diff --git a/arch/powerpc/platforms/44x/amcc-sata.c 
b/arch/powerpc/platforms/44x/amcc-sata.c
new file mode 100644
index 000..fdda917
--- /dev/null
+++ b/arch/powerpc/platforms/44x/amcc-sata.c
@@ -0,0 +1,125 @@
+/*
+ * AMCC Canyonlands SATA wrapper
+ *
+ * Copyright 2008 DENX Software Engineering, Stefan Roese s...@denx.de
+ *
+ * Extract the resources (MEM  IRQ) from the dts file and put them
+ * into the platform-device struct for usage in the platform-device
+ * SATA driver.
+ *
+ */
+
+#include linux/platform_device.h
+#include linux/of_platform.h
+
+/*
+ * Resource template will be filled dynamically with the values
+ * extracted from the dts file
+ */
+static struct resource sata_resources[] = {
+   [0] = {
+   /* 460EX SATA registers */
+   .flags  = IORESOURCE_MEM,
+   },
+   [1] = {
+   /* 460EX AHBDMA registers */
+   .flags  = IORESOURCE_MEM,
+   },
+   [2] = {
+   /* 460EX SATA IRQ */
+   .flags  = IORESOURCE_IRQ,
+   },
+   [3] = {
+   /* 460EX AHBDMA IRQ */
+   .flags  = IORESOURCE_IRQ,
+   },
+};
+
+static u64 dma_mask = 0xULL;
+
+static struct platform_device sata_device = {
+   .name = sata-dwc,
+   .id = 0,
+   .num_resources = ARRAY_SIZE(sata_resources),
+   .resource = sata_resources,
+   .dev = {
+   .dma_mask = dma_mask,
+   .coherent_dma_mask = 0xULL,
+   }
+};
+
+static struct platform_device *ppc460ex_devs[] __initdata = {
+   sata_device,
+};
+
+static int __devinit ppc460ex_sata_probe(struct of_device *ofdev,
+const struct of_device_id *match)
+{
+   struct device_node *np = ofdev-node;
+   struct resource res;
+   const char *val;
+
+   /*
+* Check if device is enabled
+*/
+   val = of_get_property(np, status, NULL);
+   if (val  !strcmp(val, disabled)) {
+   printk(KERN_INFO SATA port disabled via device-tree\n);
+   return 0;
+   }
+
+   /*
+* Extract register address reange from device tree and put it into
+* the platform device structure
+*/
+   if (of_address_to_resource(np, 0, res)) {
+   printk(KERN_ERR %s: Can't get SATA register address\n,
+   __func__);
+   return -ENOMEM;
+   }
+   sata_resources[0].start = res.start;
+   sata_resources[0].end = res.end;
+
+   if (of_address_to_resource(np, 1, res)) {
+   printk(KERN_ERR %s: Can't get AHBDMA register address\n,
+   __func__);
+   return -ENOMEM;
+   }
+   sata_resources[1].start = res.start;
+   sata_resources[1].end = res.end;
+
+   /*
+* Extract IRQ number(s) from device tree and put them into
+* the platform device structure
+*/
+   sata_resources[2].start = sata_resources[2].end =
+   irq_of_parse_and_map(np, 0);
+   sata_resources[3].start = sata_resources[3].end =
+   irq_of_parse_and_map(np, 1);
+
+   return platform_add_devices(ppc460ex_devs, ARRAY_SIZE(ppc460ex_devs));
+}
+
+static int __devexit ppc460ex_sata_remove(struct of_device *ofdev

[PATCH 2/2] Added AMCC 460EX Canyonlands SATA support.

2009-04-29 Thread Feng Kan
Signed-off-by: Feng Kan f...@amcc.com
---
 arch/powerpc/boot/dts/canyonlands.dts  |8 ++
 arch/powerpc/platforms/44x/Makefile|4 +
 arch/powerpc/platforms/44x/amcc-sata.c |  125 
 3 files changed, 137 insertions(+), 0 deletions(-)
 create mode 100644 arch/powerpc/platforms/44x/amcc-sata.c

diff --git a/arch/powerpc/boot/dts/canyonlands.dts 
b/arch/powerpc/boot/dts/canyonlands.dts
index 5fd1ad0..b536223 100644
--- a/arch/powerpc/boot/dts/canyonlands.dts
+++ b/arch/powerpc/boot/dts/canyonlands.dts
@@ -163,6 +163,14 @@
 interrupts = 0x1e 4;
 };
 
+SATA0: s...@bffd1000 {
+compatible = amcc,sata-460ex;
+   reg = 4 0xbffd1000 0x800 4 0xbffd0800 0x400;
+interrupt-parent = UIC3;
+interrupts = 0 4   /* SATA */
+  5 4; /* AHBDMA */
+};
+
POB0: opb {
compatible = ibm,opb-460ex, ibm,opb;
#address-cells = 1;
diff --git a/arch/powerpc/platforms/44x/Makefile 
b/arch/powerpc/platforms/44x/Makefile
index 01f51da..fa0a999 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -4,3 +4,7 @@ obj-$(CONFIG_EBONY) += ebony.o
 obj-$(CONFIG_SAM440EP) += sam440ep.o
 obj-$(CONFIG_WARP) += warp.o
 obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
+ifeq ($(CONFIG_SATA_DWC),y)
+obj-$(CONFIG_CANYONLANDS) += amcc-sata.o
+endif
+
diff --git a/arch/powerpc/platforms/44x/amcc-sata.c 
b/arch/powerpc/platforms/44x/amcc-sata.c
new file mode 100644
index 000..fdda917
--- /dev/null
+++ b/arch/powerpc/platforms/44x/amcc-sata.c
@@ -0,0 +1,125 @@
+/*
+ * AMCC Canyonlands SATA wrapper
+ *
+ * Copyright 2008 DENX Software Engineering, Stefan Roese s...@denx.de
+ *
+ * Extract the resources (MEM  IRQ) from the dts file and put them
+ * into the platform-device struct for usage in the platform-device
+ * SATA driver.
+ *
+ */
+
+#include linux/platform_device.h
+#include linux/of_platform.h
+
+/*
+ * Resource template will be filled dynamically with the values
+ * extracted from the dts file
+ */
+static struct resource sata_resources[] = {
+   [0] = {
+   /* 460EX SATA registers */
+   .flags  = IORESOURCE_MEM,
+   },
+   [1] = {
+   /* 460EX AHBDMA registers */
+   .flags  = IORESOURCE_MEM,
+   },
+   [2] = {
+   /* 460EX SATA IRQ */
+   .flags  = IORESOURCE_IRQ,
+   },
+   [3] = {
+   /* 460EX AHBDMA IRQ */
+   .flags  = IORESOURCE_IRQ,
+   },
+};
+
+static u64 dma_mask = 0xULL;
+
+static struct platform_device sata_device = {
+   .name = sata-dwc,
+   .id = 0,
+   .num_resources = ARRAY_SIZE(sata_resources),
+   .resource = sata_resources,
+   .dev = {
+   .dma_mask = dma_mask,
+   .coherent_dma_mask = 0xULL,
+   }
+};
+
+static struct platform_device *ppc460ex_devs[] __initdata = {
+   sata_device,
+};
+
+static int __devinit ppc460ex_sata_probe(struct of_device *ofdev,
+const struct of_device_id *match)
+{
+   struct device_node *np = ofdev-node;
+   struct resource res;
+   const char *val;
+
+   /*
+* Check if device is enabled
+*/
+   val = of_get_property(np, status, NULL);
+   if (val  !strcmp(val, disabled)) {
+   printk(KERN_INFO SATA port disabled via device-tree\n);
+   return 0;
+   }
+
+   /*
+* Extract register address reange from device tree and put it into
+* the platform device structure
+*/
+   if (of_address_to_resource(np, 0, res)) {
+   printk(KERN_ERR %s: Can't get SATA register address\n,
+   __func__);
+   return -ENOMEM;
+   }
+   sata_resources[0].start = res.start;
+   sata_resources[0].end = res.end;
+
+   if (of_address_to_resource(np, 1, res)) {
+   printk(KERN_ERR %s: Can't get AHBDMA register address\n,
+   __func__);
+   return -ENOMEM;
+   }
+   sata_resources[1].start = res.start;
+   sata_resources[1].end = res.end;
+
+   /*
+* Extract IRQ number(s) from device tree and put them into
+* the platform device structure
+*/
+   sata_resources[2].start = sata_resources[2].end =
+   irq_of_parse_and_map(np, 0);
+   sata_resources[3].start = sata_resources[3].end =
+   irq_of_parse_and_map(np, 1);
+
+   return platform_add_devices(ppc460ex_devs, ARRAY_SIZE(ppc460ex_devs));
+}
+
+static int __devexit ppc460ex_sata_remove(struct of_device *ofdev)
+{
+   /* Nothing to do here */
+   return 0;
+}
+
+static const struct of_device_id

Re: Help!Some memory doesn't work on PPC405Ex based board!

2009-04-14 Thread Feng Kan
Hi SunNeo:

The fact that it is hanging at the same place in kernel seems strange.
Usually when dram initialization is incorrect,
the kernel would not run at all. Uboot just hangs at relocate code. I
suggest you turn on early kernel printf to see
if you get some other outputs.

P.S when you have discrete memory on board. you have to be sure that
your calibration values are correct. The RDCC
RQDC value should be best possible. You can run the fix initialization
and then lift the autocalibration routine
to the end of the fix dram init to determine the best RFDC RQDC windows.
After that recode the fix values for those
registers.

Feng Kan
AMCC Software

SunNeo wrote:
 Hi, Stefan,
  
 Thanks for your help.
  
 My platform uses the MICRON MT47H256M8THN DDRII SDRAM and the DDRII SDRAM is 
 soldered on the board.

 As I said, my board was similar with Kilauea evb, so I created my 
 configuration header file from Kilauea's at U-Boot. In the configuration 
 file, register value for the DDR SDRAM controller is defined. But I have 
 removed DDR autocalibraton related configuration from the configuration file, 
 do you think this will cause any issues?
  
 I'm not sure what you mean about intensive memory test. I use mm cmd 
 under U-Boot command prompt to modify value of high 512M memory, and this 
 command works well.
  
 About booting Linux, the kernel hangs at the same location. Always after this 
 print info 4Mount-cache hash table entries: 512.

 Best Regards,
 Sun
  
   
 From: s...@denx.de
 To: linuxppc-dev@ozlabs.org
 Subject: Re: Help!Some memory doesn't work on PPC405Ex based board!
 Date: Tue, 14 Apr 2009 11:23:02 +0200
 CC: sunwx2...@hotmail.com

 On Monday 13 April 2009, SunNeo wrote:
 
 I'm porting Linux-2.6.29 on PPC405Ex based board, it's very similar to AMCC
 Kilauea evb.

 In my board, two 512MB DDRII memory is connected to 2 ranks of the 405Ex
 CPU. This 1GB memory works well at U-Boot-2009.01, but when I boot
 Linux-2.6.29, the kernel hangs somewhere.
   
 Does it just hang somewhere, or always at the same location? A random 
 hangup 
 could mean that you are having a memory problem (hardware, or wrong 
 initialization).

 
 What interesting is, if I 
 configured the system to use only 512MB memory at U-Boot, the Linux can
 boot normally .
   
 Are you using DIMM's on your platform? Or soldered chips? Which memory 
 initialization code are you using in U-Boot? And which autocalibration code?

 Did you do some intensive memory test?

 Best regards,
 Stefan
 


   _  

 把MSN装进手机,更多聊天乐趣等你挖掘! 立刻下载! http://mobile.msn.com.cn/ 

   

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Re: AMCC 440EP phy detection

2009-04-07 Thread Feng Kan

Hi Eddie:

Are you able to ping in u-boot? Sounded like you were only pinging in linux.
I would try the mii command in uboot. It seems like it detected the 
phys. Try enable the
loopbacks at the different stages to see if the traffic is returning. 
This excerise is

much easier in uboot than linux.


Feng Kan
AMCC Software

Eddie Dawydiuk wrote:

Hello,

I'm working on a board based on the Yosemite AMCC 440EP eval board. I'm having 
some difficulty getting both network interfaces working. The first problem I 
found is the ibm_newemac driver was detecting the two phys at address 0 and 1 
where we have them wired for addresses 1 and 3. As a result I hardcoded the 
phy-address in the dts file. I then found I was able to receive and send data on 
eth1(phy-address 3) without incident. Although I found eth0 can receive data but 
I see no packets being transmitted(using a packet sniffer) and I see no 
indication from a software standpoint of any transmit failures. We are using 
Micrel KSZ8041FTL phys(RMII mode) where the Yosemite board used Micrel KS8721BL 
phys.  I've reviewed the schematic and it appears both phys are connected 
identically and I've seen this same failure on multiple boards. I thought the 
fact that the driver detected a phy at address 0 might be a clue, but I can't 
make much of the clue. So I thought I'd post this info in the hopes someone else 
might have run into a similar problem or have a suggestion.


  


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Re: early kernel debugging

2009-04-03 Thread Feng Kan

Hi:

Did you try the early kernel printk option in kernel hacking. It can 
give some
very helpful information. Make sure the address for the physical uart 
address is

passed in correctly.

Feng


Tirumala Reddy Marri wrote:

I am not sure if I understand correctly. But Looks like you are not
passing the device tree along with kernel image and RAMDISK(you may not
need it if  you are using NFS mount). You boot command should some what
look like this bootm kernel_addr ramdisk_addr devtree_addr or bootm
kernel_addr - devtree_addr . If you are already doing that I would
check my bootargs for correct params.

-Original Message-
From: linuxppc-dev-bounces+tmarri=amcc@ozlabs.org
[mailto:linuxppc-dev-bounces+tmarri=amcc@ozlabs.org] On Behalf Of
Yigal Goldberger
Sent: Thursday, April 02, 2009 1:06 PM
To: linuxppc-dev@ozlabs.org
Subject: early kernel debugging


Hi All,
I'm using u-boot to boot kernel 2.6.24.2 on a powerpc based board .
I see that after uncompressing the kernel it hangs.
I found a location (System.map) I think corresponds to the __log_buf (my
SDRAM starts at physical address 0 (and u-boot performs - Load Address:
 Entry Point: ) .
So I just removed the leading C0xx from the address leaving xx .
And that's where I looked . 
I did see 2 error messages (though they were somewhat corrupt) the first

designated a memory fault and the second a kernel oops at some address.
I looked this address up on System.map and it's somewhere inside prom.c
in of_scan_flat_dt( ) . 


I have a few question at this point :
A)Am I looking at the right memory location for __log_buf ?
B)What is printed to the buffer (printk's of what verbose level ?)
C)In a previous kernel version 2.6.14 I don't remember explicitly using
a flat device tree or pointing at such a tree through the bootm command)
, but I used the ARCH=ppc then as opposed to ARCH=powerpc Now .
I see a lot of stuff regarding the need to provide such a data structure
upon booting via bootm .Do I need to explicitly prepare such a data
structure and provide a pointer to it via bootm ?
Might this be the cause for this early hang ?

Best Regards,
Yigal Goldberger. 



  
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Re: About [AMCC 460EX/canyonlands board] Synopsys DesignWare Cores (DWC) SATA host driver

2009-03-18 Thread Feng Kan

Hi RenQuan:

We are aware of the issue, currently the sata is only supported up to 
2.6.25.7. We are working on a patchable version

to submit to main line.

Thanks
Feng Kan

Cheng Renquan wrote:

Mark,
  I found that the current sata_dwc can only work on
DENX-2.6.25-stable, and have problems in DENX-2.6.26, 27, 28,
29(master),
the boot errors is as the following, I hope you and AMCC staff submit
it into mainline soon, thanks.

there is also some other boot panic kmsg, I will reproduce it tomorrow.

http://git.denx.de/linux-2.6-denx.git/

Synopsys DesignWare Cores (DWC) SATA host driver

linuxppc-dev@ozlabs.org

About AMCC DesignWare Core SATA controller driver:

= boot
Using ip address 172.16.90.27
## Booting kernel from Legacy Image at ff60 ...
   Image Name:   Linux-2.6.27.19
   Created:  2009-03-13  10:18:17 UTC
   Image Type:   PowerPC Linux Kernel Image (gzip compressed)
   Data Size:1574261 Bytes =  1.5 MB
   Load Address: 
   Entry Point:  
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
## Flattened Device Tree blob at fc1e
   Booting using the fdt blob at 0xfc1e
## Loading init Ramdisk from Legacy Image at fc20 ...
   Image Name:   canyonlands ramdisk rev. 001
   Created:  2008-05-13  11:18:24 UTC
   Image Type:   PowerPC Linux RAMDisk Image (gzip compressed)
   Data Size:18968362 Bytes = 18.1 MB
   Load Address: 
   Entry Point:  
   Verifying Checksum ... OK
   Loading Device Tree to 007fa000, end 007f ... OK
   Loading Ramdisk to 1ec3d000, end 1fe53f2a ... OK
Using Canyonlands machine description
Linux version 2.6.27.19 (fed...@ubox-h1) (gcc version 4.2.2) #1 Fri
Mar 13 18:18:05 HKT 2009
Found initrd at 0xdec3d000:0xdfe53f2a
Zone PFN ranges:
  DMA  0x - 0x0002
  Normal   0x0002 - 0x0002
  HighMem  0x0002 - 0x0002


scsi 0:0:0:0: Direct-Access ATA  WDC WD10EVVS-63E 01.0 PQ: 0 ANSI: 5
sd 0:0:0:0: [sda] 1953525168 512-byte hardware sectors (1000205 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sd 0:0:0:0: [sda] 1953525168 512-byte hardware sectors (1000205 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
 sda:3ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata1.00: cmd c8/00:08:00:00:00/00:00:00:00:00/e0 tag 0 dma 4096 in
 res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata1.00: status: { DRDY }
ata1: link is slow to respond, please be patient (ready=0)
ata1: prereset failed (errno=-16)
ata1: reset failed, giving up
ata1.00: disabled
ata1: EH complete
sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00
end_request: I/O error, dev sda, sector 0
Buffer I/O error on device sda, logical block 0
sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00
end_request: I/O error, dev sda, sector 0
Buffer I/O error on device sda, logical block 0
 unable to read partition table
sd 0:0:0:0: [sda] Attached SCSI disk
4cc00.nor_flash: Found 1 x16 devices at 0x0 in 16-bit bank
 Amd/Fujitsu Extended Query Table at 0x0040
4cc00.nor_flash: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
RedBoot partition parsing not available
Creating 7 MTD partitions on 4cc00.nor_flash:
0x-0x001e : kernel
0x001e-0x0020 : dtb
0x0020-0x0160 : ramdisk
0x0160-0x01a0 : jffs2
0x01a0-0x03f6 : user
0x03f6-0x03fa : env
0x03fa-0x0400 : u-boot
NDFC NAND Driver initialized. Chip-Rev: 0x0111
NAND device: Manufacturer ID: 0x20, Chip ID: 0xf1 (ST Micro NAND
128MiB 3,3V 8-bit)
Scanning device for bad blocks
Number of partitions 3
Creating 3 MTD partitions on NAND 128MiB 3,3V 8-bit:
0x-0x0010 : u-boot
0x0010-0x0014 : env
0x0014-0x0800 : content
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
dwc_otg: version 2.60a 22-NOV-2006
TCP cubic registered
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
eth0: link is up, 1000 FDX, pause enabled
IP-Config: Complete:
 device=eth0, addr=172.16.90.27, mask=255.255.255.0, gw=255.255.255.255,
 host=canyonlands, domain=, nis-domain=(none),
 bootserver=172.16.90.26, rootserver=172.16.90.26, rootpath=
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 156k init
Startup utility found. Executing...
AMCC Startup utility launched.


BusyBox v1.2.1 (2008.05.13-11:11+) Built-in shell (ash)
Enter 'help' for a list of built-in commands.

~ # fdisk -l
sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00
end_request: I/O error, dev sda, sector 8
Buffer I/O error on device sda

Re: [PATCH] PowerPC 440EPx/GRx fix memory size calculation

2009-03-13 Thread Feng Kan

Hi Guys:
Sequoia uses on board discrete memory with one rank. So one chip 
select would be fine.

Turning on both won't matter, since the other cs is never used.

Feng Kan

Stefan Roese wrote:

On Wednesday 11 March 2009, Valentine Barshak wrote:
  

I've been looking at the docs once again and actually I couldn't find an
   explanation there. And I don't have that e-mail from AMCC support
that I got a while back regarding the issue anymore.
There might have been some misunderstanding.
The docs (PPC440EPX UM 19.2 Device Address Mapping) say that the chip
select field width is always fixed at one bit, but this doesn't actually
  mean that there's always one chip select used.
The patch works fine on Sequoia and another Sequoia-like board with 1GB
RAM installed, but it might not work with 2GB RAM. I've tried to play
with DDR0_10 settings and Sequoia works fine regardless of what's
actually written to DDR0_10.
So, probably the best way would be to fix that in u-boot
amcc/sequoia/sdram.c by doing mtsdram(DDR0_10, 0x0100); instead of
mtsdram(DDR0_10, 0x0300);
Sorry, for confusion, but after reviewing the docs, I think that
only REDUC interpretation has to be fixed. The chips select part should
be fixed in u-boot sdram code for Sequoia as was originally proposed by
Mikhail.

Stefan, could you please take a look?



I'll apply the U-Boot patch today. But as Josh pointed out, we should try to 
find a way for the bootwrapper to work in all cases.


Best regards,
Stefan
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RE: Broken PCI on Sequoia

2009-01-30 Thread Feng Kan
Hi:
   It looks like the top bit is hard coded to 1. There doesn't seem to
be anyway
Of changing it. 

Feng Kan
AMCC Engineering

-Original Message-
From: linuxppc-dev-bounces+fkan=amcc@ozlabs.org
[mailto:linuxppc-dev-bounces+fkan=amcc@ozlabs.org] On Behalf Of
Benjamin Herrenschmidt
Sent: Friday, January 30, 2009 1:30 PM
To: Geert Uytterhoeven
Cc: Linux/PPC Development
Subject: Re: Broken PCI on Sequoia


 For that sort of 4xx PHB (ie, the PCI 2.x ones, not the PCI-X nor the
 PCI-E), we only know how to program 32-bit of PLB address. IE. The old
 code would have cropped the plb_addr when writing to the register, the
 new code complains.
 
 I suspect some implementation support a register to put the high
part
 of the PLB address, and that it already contains 1, so the old code
 would have worked by chance, the new code doesn't because it bails
out.

Hrm... from the doco it's also one 32-bit register... I'm starting to
think that those guys always assume the top 1 bit is set or something
like that ...

The doc is unclear. Maybe somebody form AMCC can confirm ?

Cheers,
Ben.


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