Hi Chris,
There is no any collision between the kernel and CMEM because I am able
to boot the kernel with more the 128MB memory allocation to kernel.
It get hang or give kernel panic in booting.
Thanks
Hitesh Patel
On 08/30/2010 11:53 PM, Ring, Chris wrote:
Are you using CMEM? http://processors.wiki.ti.com/index.php/CMEM_Overview
If so, maybe there's a memory map collision between the kernel and
CMEM? Hint - CMEM's memory map is set when the driver is loaded
(insmod param).
Chris
------------------------------------------------------------------------
*From:* [email protected]
[mailto:[email protected]]
*On Behalf Of *hitesh
*Sent:* Monday, August 30, 2010 6:46 AM
*To:* [email protected]
*Subject:* Problem with 256MB DDR on DM365
Hi ALL
We are facing one issue related to the memory allocation on DM365
based board. We have 256MB DDR on our board.
But when we allocate more than 128 MB of memory to the kernel (in
bootargs), sometimes kernel gives paging request errors while
running application or sometimes it is not able to even boot (i.e.
kernel panic).
We have done changes in the U-boot to configure the DDR of 256MB.
We have modified the following U-boot source file:
File: include/configs/davinci_dm365_evm.h
Change: (As below)
#define CFG_MALLOC_LEN (0x40000 +
128*1024) /* malloc () len */
#define CFG_GBL_DATA_SIZE
(128) /* reserved for initial data */
#define CFG_MEMTEST_START
(0x82000000) /* memtest start address */
#define CFG_MEMTEST_END
(0x90000000) /* 16MB RAM test */
#define CONFIG_NR_DRAM_BANKS (1)
/* we have 1 bank of DRAM */
#define CONFIG_STACKSIZE (256*1024)
/* regular stack */
#define PHYS_SDRAM_1
0x80000000 /* DDR Start */
// ORIGINAL: #define PHYS_SDRAM_1_SIZE
0x8000000 /* DDR size 128MB */
#define PHYS_SDRAM_1_SIZE
0x10000000 /* DDR size 256MB */
Details of our DM365 board is as follows:
* Silicon Version of DM365: DM365ZCE30
* DVSDK Version: dvsdk_2_10_01_18
* Linux Version: linux-2.6.18_pro500
* PSP Version: PSP_02_10_00_14
* DDR Size: 256MB.
Any body help me what are the changes are still left?
Is there any missing in setting?
What are the setting if we go from 128MB ddr to 256MB size of DDR?
Thanks
Hitesh Patel
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