Hi all,
I am working on a custom DaVinci DM6446 board. I have been trying to change the
default memory map to allocate more memory for DDR2 on the DSP side but without
any luck. My application is running without codec engine.
My default DSPLink configuration is: STATIC CONST LINKCFG_MemEntry
LINKCFG_memTable_00 [] =
{
{
0, /* ENTRY : Entry number */
"DSPLINKMEM", /* NAME : Name of the memory region */
0x8FE00000, /* ADDRPHYS : Physical address */
0x8FE00000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0x5000, /* SIZE : Size of the memory region */
TRUE /* SHARED : Shared access memory? */
},
{
1, /* ENTRY : Entry number */
"DSPLINKMEM1", /* NAME : Name of the memory region */
0x8FE05000, /* ADDRPHYS : Physical address */
0x8FE05000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0xFB000, /* SIZE : Size of the memory region */
TRUE /* SHARED : Shared access memory? */
},
{
2, /* ENTRY : Entry number */
"RESETCTRL", /* NAME : Name of the memory region */
0x8FF00000, /* ADDRPHYS : Physical address */
0x8FF00000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0x00000080, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
},
{
3, /* ENTRY : Entry number */
"DDR2", /* NAME : Name of the memory region */
0x8FF00080, /* ADDRPHYS : Physical address */
0x8FF00080, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0xFFF80, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
},
{
4, /* ENTRY : Entry number */
"DSPIRAM", /* NAME : Name of the memory region */
0x11800000, /* ADDRPHYS : Physical address */
0x11800000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0x10000, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
},
{
5, /* ENTRY : Entry number */
"DSPL1DRAM", /* NAME : Name of the memory region */
0x11F04000, /* ADDRPHYS : Physical address */
0x11F04000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0xC000, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
}
} ;
I have followed the following tutorial on davinci wiki to change the memory
map.
http://tiexpressdsp.com/wiki/index.php?title=Changing_DSPLink_Memory_Map
My new configuration is:
{
{
0, /* ENTRY : Entry number */
"DSPLINKMEM", /* NAME : Name of the memory region */
0x8FB00000, /* ADDRPHYS : Physical address */
0x8FB00000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0x5000, /* SIZE : Size of the memory region */
TRUE /* SHARED : Shared access memory? */
},
{
1, /* ENTRY : Entry number */
"DSPLINKMEM1", /* NAME : Name of the memory region */
0x8FB05000, /* ADDRPHYS : Physical address */
0x8FB05000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0xFB000, /* SIZE : Size of the memory region */
TRUE /* SHARED : Shared access memory? */
},
{
2, /* ENTRY : Entry number */
"RESETCTRL", /* NAME : Name of the memory region */
0x8FC00000, /* ADDRPHYS : Physical address */
0x8FC00000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0x00000080, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
},
{
3, /* ENTRY : Entry number */
"DDR2", /* NAME : Name of the memory region */
0x8FC00080, /* ADDRPHYS : Physical address */
0x8FC00080, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0x3FFF80, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
},
{
4, /* ENTRY : Entry number */
"DSPIRAM", /* NAME : Name of the memory region */
0x11800000, /* ADDRPHYS : Physical address */
0x11800000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0x10000, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
},
{
5, /* ENTRY : Entry number */
"DSPL1DRAM", /* NAME : Name of the memory region */
0x11F04000, /* ADDRPHYS : Physical address */
0x11F04000, /* ADDRDSPVIRT : DSP virtual address */
(Uint32) -1, /* ADDRGPPVIRT : GPP virtual address (if
known) */
0xC000, /* SIZE : Size of the memory region */
FALSE /* SHARED : Shared access memory? */
}
} ;
I have changed DDR2 size from 1 to 4 MB and moved everything up for 3MB so I
can re size the DDR2. I have not changed the amount of memory that Linux is
allocation (mem=114MB).
Old configuration:
DSPLINKMEM:
start from 254MB
size 1MB
DDR2:
start from 255MB
size 1MB
New Configuration:
DSPLINKMEM
start from 251MB
size 1MB
DDR2
start from 252MB
size 4MB
I have made the same changes on the DSP side. What i don't know is do I need to
change
prog.module("GBL").C64PLUSMAR128to159 = 0x0000FFF0 ;
and to which value?
Any suggerstion?
Tnx,
Benjamin
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