Thank for your answers.
Sébastien
Matt Sealey a écrit :
Benjamin Herrenschmidt wrote:
On Tue, 2008-09-30 at 18:08 -0500, Matt Sealey wrote:
It's far more common than people might think at first glance. With x86
I am sure it would benefit the platform a little more if the OF support
was
Hello,
I have a question about Device Tree.
Is Device Tree found only only on Linux Powerpc ?
Thanks
Sébastien
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Hello,
When I use ioremap, the second time, I obtain this message :
allocation failed: out of vmalloc space - use vmalloc=size to increase
size.
What can I do in order to fix this problem ?
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The first is ioremap(0x2000,0x1000);
The second is ioremap(0x8000,0x1000);
Is it too long
Grant Likely a écrit :
On Fri, Sep 19, 2008 at 01:15:20PM +0200,
=?ISO-8859-1?Q?S=E9bastien_Chr=E9tien_ wrote:
Hello,
When I use ioremap, the second time, I obtain this message :
if I write :
ioremap(0x2000,0x4) and ioremap(0x2000,0x5)
Will it crash ?
Josh Boyer a écrit :
On Fri, Sep 19, 2008 at 06:34:06PM +0200,
=?ISO-8859-1?Q?S=E9bastien_Chr=E9tien_ wrote:
The first is ioremap(0x2000,0x1000);
The second is ioremap(0x8000,0x1000);
I made a mistake. The right code is :
ioremap(0x2000,0x4) and ioremap(0x8000,0x5)
Grant Likely a écrit :
On Fri, Sep 19, 2008 at 10:58 AM, Josh Boyer [EMAIL PROTECTED] wrote:
On Fri, Sep 19, 2008 at 06:45:01PM +0200,
=?ISO-8859-1?Q?S=E9bastien_Chr=E9tien_ wrote:
if
The chip that I am using is a MPC7448.
The Kernel version is 2.6.26.
I am developping my own driver.
I am making some tests
Josh Boyer a écrit :
On Fri, Sep 19, 2008 at 06:45:01PM +0200,
=?ISO-8859-1?Q?S=E9bastien_Chr=E9tien_ wrote:
if I write :
ioremap(0x2000,0x4) and
Hello
I am seeing irq source. What is the use of :
IRQ_HOST_MAP_LEGACY
http://tomoyo.sourceforge.jp/cgi-bin/lxr/ident?i=IRQ_HOST_MAP_LEGACY
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Where can I find a pata_of_platform node example ?
Sergei Shtylyov a écrit :
Arnd Bergmann wrote:
Most probably you can use the existing platform drivers:
drivers/ide/egacy/ide_platform.c or drivers/ata/pata_platform.c.
Create/register a platform device named pata_platform with 2
memory
I saw pata_of_platform source. And when is called pata_of_platform_probe ?
2008/9/11, Sébastien Chrétien [EMAIL PROTECTED]:
Where can I find a pata_of_platform node example ?
Sergei Shtylyov a écrit :
Arnd Bergmann wrote:
Most probably you can use the existing platform drivers:
drivers
Hello
I would like to setup my IDE controller. It uses a generic mapping. And he
is located at the adress 0x20003000.
How can I specifie this adress to the ide driver ?
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Have I to rewrite a IDE driver ?
2008/9/10, Sergei Shtylyov [EMAIL PROTECTED]:
Hello.
Sébastien Chrétien wrote:
I would like to setup my IDE controller. It uses a generic mapping. And he
is located at the adress 0x20003000.
What kin of controller, and what do you mean by generic
It is a common ide controller :
offset 0x0 Data
offset 0x1 error
offset 0x2 Sector count
offset 0x3 sector No
offset 0x4 Cylinder low
offset 0x5 Cylinder High
offset 0x6 Head
offset 0x7 status
2008/9/10, Sergei Shtylyov [EMAIL PROTECTED]:
Hello.
Sébastien Chrétien wrote:
I would like
I looked falconide.c, it uses hw_regs_t hw; and ide_hwif_t *hwif.
Is it a good way ?
2008/9/10, Arnd Bergmann [EMAIL PROTECTED]:
On Wednesday 10 September 2008, Sergei Shtylyov wrote:
Most probably you can use the existing platform drivers:
drivers/ide/egacy/ide_platform.c or
ok I will use the flat device tree.
Do you utils in order to use ata and check ata link ?
For example, to read some information of my compact flash
2008/9/10, Sergei Shtylyov [EMAIL PROTECTED]:
Arnd Bergmann wrote:
Most probably you can use the existing platform drivers:
]:
On Wed, 2008-09-03 at 23:02 +0200, Sébastien Chrétien wrote:
irq_of_parse_and_map is equivalent to ioremap in the MMU case ?
On the powerpc architecture, we use virtualized IRQ numbers in order to
deal with the wide range of interrupt controllers around and multiple
of them cascaded
)
printk(%s: No uart node found !\n, __func__);
virt=irq_of_parse_and_map(uart_irq, 0);
printk(Virtual irq : %d \n,virt);
When I boot linux, virt=0;
What is wrong ?
2008/9/4, Sébastien Chrétien [EMAIL PROTECTED]:
I read the booting_without_of.txt document and the Interrupt Mapping
I followed your advice : I used the UART layer.
It is easier.
Thanks
Benjamin Herrenschmidt a écrit :
On Tue, 2008-09-02 at 09:34 +0200, Sébastien Chrétien wrote:
ok is it a bad way to write a tty driver ? why ?
Not necessarily, it's just overkill. The UART layer handles a lot
Hello,
I am trying to register a function writh IRQ :
static irqreturn_t uart_test (int irq , void *dev_id)
{
printk(/!\\ Interruption : tx_empty\n);
return IRQ_HANDLED;
}
req=request_irq(0x18,uart_test,NULL,uart_test,NULL);
printk(Initialisation IRQ UART : %d \n, req);
When
like:
SA_SHIRQInterrupt is shared
SA_INTERRUPTDisable local interrupts while processing
SA_SAMPLE_RANDOMThe interrupt can be used for entropy
otherwise try to use the function install_irq_handler()
bye Daniele
Sébastien Chrétien ha scritto:
Hello
Ok I will try irq_create_mapping tomorrow.
When have I to use this function ?
I am using a MPC7448.
M B a écrit :
Hi,
this seems to be the same problem I had, when registering an irq with UIO.
On Wed, Sep 3, 2008 at 5:03 PM, Sébastien Chrétien
[EMAIL PROTECTED] wrote:
The failure referes
irq_of_parse_and_map is equivalent to ioremap in the MMU case ?
Scott Wood a écrit :
On Wed, Sep 03, 2008 at 06:36:39PM +0200, Sébastien Chrétien wrote:
Ok I will try irq_create_mapping tomorrow.
When have I to use this function ?
You always need to create a mapping (though doing
ok is it a bad way to write a tty driver ? why ?
2008/9/2, Benjamin Herrenschmidt [EMAIL PROTECTED]:
On Tue, 2008-09-02 at 07:13 +0200, Sébastien CHRETIEN wrote:
My board has only a uart device on a FPGA. I don't use the serial layer
because it isn't documented in Linux Device Driver 3rd.
ok. I will try the serial layer
2008/9/2, Benjamin Herrenschmidt [EMAIL PROTECTED]:
On Tue, 2008-09-02 at 09:34 +0200, Sébastien Chrétien wrote:
ok is it a bad way to write a tty driver ? why ?
Not necessarily, it's just overkill. The UART layer handles a lot
of stuff for you. The tty
Hello,
I am triying to write a tty_driver under ppc. And I get a kernel panic.
Can somebody explain me how finding the source of the error with a kernel
panic trace :
thanks
Unable to handle kernel paging request for data at address 0x57f9
Faulting instruction address: 0xc0110ddc
Oops:
+clive.jenkins linuxppc-dev-bounces%2Bclive.jenkins=
[EMAIL PROTECTED] On Behalf Of Sébastien Chrétien
Sent: 01 September 2008 10:16
To: linuxppc-dev@ozlabs.org
Subject: Trace
Hello,
I am triying to write a tty_driver under ppc. And I get a kernel panic.
Can somebody explain me how finding
of the parameter
int* index.
So Linux loaded a tty_structure which was in tiny_ttys[-1]
console.h is not very well documented about this.
Thanks
Sébastien Chrétien
Jenkins, Clive a écrit :
Why can't tty have value 0x5741 ?
To answer my own question, because it ends in 1 and is not word
Hello,
I am trying to port linux for my ppc board. There is no keybord and no
scree. There is only UART.
I would like to have a console/terminal using UART.
What is the best way ? to write a serial driver using struct uart_driver
or using tty_driver or to write a driver from scratch.
Maybe there
Hello,
I am using Linux 2.6.26. When I boot my board, I don't see the message :
RAMDISK driver initialized:...
Is it right ?
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Hello,
I am trying to code a tty serial driver (UART link). The initialization is :
(model LDD 3)
static int __init tiny_tty_init(void)
{
int i, retval;
printk(Initialization of ttyS - \n);
tiny_tty_driver=alloc_tty_driver(NB_TTY);
if(!tiny_tty_driver)
return -ENOMEM;
Hello,
What is the difference between initramfs and initrd ?
Sébastien Chrétien
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Hello,
I must create a ttyS0 console for my ppc board. Can someone advice an
example ?
Thanks
Sébastien Chrétien
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ok thank you
2008/8/25, Josh Boyer [EMAIL PROTECTED]:
On Mon, Aug 25, 2008 at 02:57:14PM +0200,
=?ISO-8859-1?Q?S=E9bastien_Chr=E9tien_ wrote:
Hello,
What is the difference between initramfs and initrd ?
You could poke around in the Documentation directory of the kernel. That
should
When the kernel is booting, is it possible to check if the initrd is good ?
2008/8/25, Sébastien Chrétien [EMAIL PROTECTED]:
ok thank you
2008/8/25, Josh Boyer [EMAIL PROTECTED]:
On Mon, Aug 25, 2008 at 02:57:14PM +0200,
=?ISO-8859-1?Q?S=E9bastien_Chr=E9tien_ wrote:
Hello,
What
Ok thank you, I will begin to implement the irq functions
2008/8/22, Michael Ellerman [EMAIL PROTECTED]:
On Thu, 2008-08-21 at 10:23 +0200, Sébastien Chrétien wrote:
Exactly, I mean ppc_md.init_IRQ().
Ok. What have I to setup in this function ? I set the mask and other
registers
Hello,
I am using linux 2.6.26 on a powerpc board. I would like to use a initrd. So
I set the initrd option in the kernel. But when I boot Linux, it crashes
before start_kernel(). And after the configuration of the MMU. The last
words of the prompt are :
Probing machine type ...
MPC7448 on
Hello,
When Linux is booting, when does it verify if a initrd exists ?
Thanks
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Hello,
What are the constraints in order to implement a irq_init function ?
I think it has to set the mask. Does it enable IRQ ?
What is the aim or get_irq ? Does it retun an information about the mask,
the states, or... ?
Thanks
Sébastien Chrétien
layer of Linux.
2008/8/21, Michael Ellerman [EMAIL PROTECTED]:
On Thu, 2008-08-21 at 09:13 +0200, Sébastien Chrétien wrote:
Hello,
What are the constraints in order to implement a irq_init function ?
You mean ppc_md.init_IRQ() ?
If so, it's a hook you can use to setup your interrupt
Hello,
I am trying to setup a initrd on my board. I selected initrd support in the
2.6.26 kernel. But when my boad boots, it crashes affet MMU:exit.
What is the process in order to use a initrd ?
Thanks
Sébastien Chrétien
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SPRN_DBAT1U, r11
blr
#endif
With this code I can use udbg.
According to you, what is the best way ?
2008/8/18, Benjamin Herrenschmidt [EMAIL PROTECTED]:
On Mon, 2008-08-18 at 16:17 +0200, Sébastien Chrétien wrote:
The mpc7448hpc2 uses a tsi108-bridge. My board uses an IP on a FPGA..
I read
So I will write .setup_arch of machine_call structure.
When is ppc_md.setup_arch() called ?
2008/8/19, Benjamin Herrenschmidt [EMAIL PROTECTED]:
On Tue, 2008-08-19 at 09:00 +0200, Sébastien Chrétien wrote:
I have no screen that's why I have to use UART. I followed the CPM
model in head_32
Hello,
I am developping a Linux for my PPC Board. I must write a define_machine
structure (marchdep_calls). Where can I find some Information about
functions of this structure ?
Thanx
Sébastien Chrétien
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Ok I am going to copy some examples.
2008/8/18, Benjamin Herrenschmidt [EMAIL PROTECTED]:
On Mon, 2008-08-18 at 10:45 +0200, Sébastien Chrétien wrote:
Hello,
I am developping a Linux for my PPC Board. I must write a
define_machine structure (marchdep_calls). Where can I find some
Can somebody explain me the aim of the function setup_arch in the
machine_call structure ?
2008/8/18, Sébastien Chrétien [EMAIL PROTECTED]:
Ok I am going to copy some examples.
2008/8/18, Benjamin Herrenschmidt [EMAIL PROTECTED]:
On Mon, 2008-08-18 at 10:45 +0200, Sébastien Chrétien wrote
, Michael Ellerman [EMAIL PROTECTED]:
On Mon, 2008-08-18 at 13:35 +0200, Sébastien Chrétien wrote:
Can somebody explain me the aim of the function setup_arch in the
machine_call structure ?
Is this MPC7448 anything like an mpc7448hpc2 ?
If so maybe you should start by looking at the code
Hello,
I am trying to port linux on my Powerpc Board. I have used Linux 2.6.26 and
gcc 3.4.5.
I have used Uboot 1.2.
Linux seems running from _start to udbg_early_init(). That's why I
develloped a udbg_driver.
It must write in a register which is located at 0x2001b044. So I wrote :
void __iomem
Thanks for your answer.
But it doesn't work.
I think ioremap create a kernel panic. But I can't see because i have no
UART ready.
Is there a way in order to trace the failure ?
2008/8/7, Juergen Beisert [EMAIL PROTECTED]:
Am Donnerstag, 7. August 2008 11:54 schrieb Sébastien Chrétien:
Hello
Can we call ioremap() during udbg_early_init ?
2008/8/7, Sébastien Chrétien [EMAIL PROTECTED]:
Thanks for your answer.
But it doesn't work.
I think ioremap create a kernel panic. But I can't see because i have no
UART ready.
Is there a way in order to trace the failure ?
2008/8/7, Juergen
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