On Tue, Jun 14, 2011 at 10:02 PM, Timur Tabi ti...@freescale.com wrote:
Thomas De Schampheleire wrote:
* However, if you jump to an address in that page, you'll have to make
sure that the entire code that executes is mapped (make map_size large
enough).
Well, that seems obvious.
Agreed.
On Tue, Jun 14, 2011 at 10:07 PM, Timur Tabi ti...@freescale.com wrote:
Timur Tabi wrote:
Hmmm I find that surprising. Memory allocated via ioremap() is supposed
to
be available in interrupt handlers, where TLB mappings can't be created
on-the-fly. I'm not sure that your observation is
On Tue, Jun 14, 2011 at 10:26 PM, Scott Wood scottw...@freescale.com wrote:
On Tue, 14 Jun 2011 10:56:31 +0200
Thomas De Schampheleire patrickdepinguin+linux...@gmail.com wrote:
* Therefore, to make sure that the mapping I intended with __ioremap()
is actually reflected in the TLB tables, I
Thomas De Schampheleire wrote:
I think I can make it more reliable by dummy reading the pages*after*
I disabled interrupts on that processor, immediately before jumping to
the boot code. Is that correct?
That sounds logical to me.
BTW, since you're already doing something non-standard with
On Wed, Jun 22, 2011 at 1:40 PM, Tabi Timur-B04825 b04...@freescale.com wrote:
Thomas De Schampheleire wrote:
I think I can make it more reliable by dummy reading the pages*after*
I disabled interrupts on that processor, immediately before jumping to
the boot code. Is that correct?
That
Hi,
On Sun, May 29, 2011 at 4:53 PM, Tabi Timur-B04825 b04...@freescale.com wrote:
On Fri, May 27, 2011 at 8:25 AM, Thomas De Schampheleire
patrickdepinguin+linux...@gmail.com wrote:
Although I realize that what I need to achieve is unconventional, what
is the correct way of mapping a
Thomas De Schampheleire wrote:
* However, if you jump to an address in that page, you'll have to make
sure that the entire code that executes is mapped (make map_size large
enough).
Well, that seems obvious.
* When that range spanned multiple pages, I faced the issue of only
one page being
Timur Tabi wrote:
Hmmm I find that surprising. Memory allocated via ioremap() is supposed
to
be available in interrupt handlers, where TLB mappings can't be created
on-the-fly. I'm not sure that your observation is correct.
Ok, it turns out I'm wrong. As long as the page is in the
On Tue, 14 Jun 2011 10:56:31 +0200
Thomas De Schampheleire patrickdepinguin+linux...@gmail.com wrote:
* Therefore, to make sure that the mapping I intended with __ioremap()
is actually reflected in the TLB tables, I added dummy reads of each
page in the TLB, prior to jumping to the boot code,
On Fri, May 27, 2011 at 8:25 AM, Thomas De Schampheleire
patrickdepinguin+linux...@gmail.com wrote:
Although I realize that what I need to achieve is unconventional, what
is the correct way of mapping a certain address range into memory, and
be able to execute from it?
Can you look at using
On Fri, May 27, 2011 at 8:25 AM, Thomas De Schampheleire
patrickdepinguin+linux...@gmail.com wrote:
Although I realize that what I need to achieve is unconventional, what
is the correct way of mapping a certain address range into memory, and
be able to execute from it?
Have you tried looking
Hi,
To cover a specific reset scenario, I need to jump back to the reset
vector of a powerpc processor (e500mc core). In order to be able to
jump there directly, the code where I jump to should have a TLB
mapping associated with it.
I tried achieving this as follows:
typedef
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