From: "Syed Ismail" <ismail.riyaz@dyansys.com>
To: ecos-discuss@ecos.sourceware.org
Subject: [ECOS] Memory layout
Date: Thu, 10 Apr 2008 21:35:00 -0000 [thread overview]
Message-ID: <20080410190845.42817.qmail@pro-237-182.rediffmailpro.com> (raw)
Hello
I have an arm based mx31 freescale processor. Using patches from freescale, i was able to create redboot image ang with minor configuration changes it worked. Now i have a few questions.
1. The image is a romram image. Loads from nor flash and executes in ram. The ram is an sdram at physical addr 0x80000000, virt addr mapped to 0x0. I now want use a ram at a different physical address. What changes do i do?
2. What does this do
X_ARM_MMU_SECTION(0x800, 0x000, 0x80, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
X_ARM_MMU_SECTION(0x800, 0x800, 0x80, ARM_CACHEABLE, ARM_BUFFERABLE, ARM_ACCESS_PERM_RW_RW); /* SDRAM */
Should i add the new ram physical address here? What is ARM_CACHEABLE and BUFFERABLE? Does the above write into registers of processor or is it only a table used by redboot code?
3. As a general query, is it possible to load and execute images like redboot from a PSRAM.
Thanks
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next reply other threads:[~2008-04-10 19:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-10 21:35 Syed Ismail [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-10-29 14:13 [ECOS] memory layout Syed Ismail
2007-10-29 14:18 ` Andrew Lunn
2003-10-08 14:29 [ECOS] Memory Layout James Yates
2003-09-18 7:31 [ECOS] Memory layout Matthieu.GIRARDIN
2002-11-18 19:44 [ECOS] memory layout AL Chane
2002-10-30 9:55 Schumacher, Gordon
2002-11-04 20:37 ` Jonathan Larmour
2002-10-30 1:09 AL Chane
2002-10-30 4:52 ` Chris Garry
2002-04-10 18:23 [ECOS] Memory layout Agarwal, Lomesh
2002-04-10 18:18 Agarwal, Lomesh
2002-04-11 18:03 ` Jonathan Larmour
2002-04-10 15:31 Agarwal, Lomesh
2002-04-10 17:39 ` Jonathan Larmour
2002-04-10 14:01 Agarwal, Lomesh
2002-04-10 15:22 ` Jonathan Larmour
2002-04-07 16:14 Agarwal, Lomesh
2002-04-10 13:51 ` Jonathan Larmour
2001-04-18 2:01 [ECOS] Memory Layout james chen
2001-04-18 5:24 ` Gary Thomas
2001-04-18 18:05 ` james chen
2001-04-19 5:12 ` Gary Thomas
2001-04-19 17:37 ` james chen
2001-04-19 17:48 ` Gary Thomas
2001-01-23 22:51 [ECOS] memory layout Natarajan, Mekala (CTS)
2001-01-23 23:46 ` Jesper Skov
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