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Modifying SDRAM Size in Redboot
- From: m a <aasay2003 at yahoo dot com>
- To: ecos-discuss at ecos dot sourceware dot org
- Date: Tue, 24 Aug 2004 02:12:30 -0700 (PDT)
- Subject: [ECOS] Modifying SDRAM Size in Redboot
Hi,
In our custom board we have SDRAM of size 32 MB. In
Redboot what are all the files i should change to
reflect this.
I made changes in hal_platform_extras.h and ixdp425.h
file as below .
#if defined(CYG_HAL_STARTUP_ROM) ||
defined(CYG_HAL_STARTUP_ROMRAM)
#if defined(CYG_HAL_STARTUP_ROMRAM)
.section .text
.ltorg
.p2align 13
#else
.section .mmu_tables, "a"
#endif
mmu_table:
// This page table sets up the preferred
mapping:
//
// Virtual Address Physical Address XCB
Size (MB) Description
// --------------- ---------------- ---
--------- -----------
// 0x00000000 0x00000000 010
32 SDRAM (cached)
// 0x10000000 0x10000000 010
32 SDRAM (alias)
// 0x20000000 0x00000000 000
32 SDRAM (uncached)
// 0x48000000 0x48000000 000
64 PCI Data
// 0x50000000 0x50000000 010
16 Flash (CS0)
// 0x51000000 0x51000000 000
112 CS1 - CS7
// 0x60000000 0x60000000 000 64
Queue Manager
// 0xC0000000 0xC0000000 000 1
PCI Controller
// 0xC4000000 0xC4000000 000 1
Exp. Bus Config
// 0xC8000000 0xC8000000 000 1
Misc IXP425 IO
// 0xCC000000 0xCC000000 000 1
SDRAM Config
// 32MB SDRAM
.set __base,0x000
.rept 0x20 - 0x000
FL_SECTION_ENTRY __base,0,3,0,0,1,0
.set __base,__base+1
.endr
// 32MB SDRAM (alias)
.rept 0x120 - 0x100
FL_SECTION_ENTRY __base,0,3,0,0,1,0
.set __base,__base+1
.endr
// 32MB SDRAM (uncached)
.set __base,0x000
.rept 0x220 - 0x200
FL_SECTION_ENTRY __base,0,3,0,0,0,0
.set __base,__base+1
.endr
// 384MB Unused
.set __base,0x300
.rept 0x480 - 0x300
.word 0
.set __base,__base+1
.endr
I changed the SDRAM_SIZE macro to 0x2000000 in the
IXDP425.h file and also the SDRAM_CONFIG_BASE register
to reflect this size change.
What more should i do and i want to verify the change
by seeing the SYMBOL MAP file. I want to see the HEAP
and STACK section in the SYMBOL MAP file. Where can i
find the MAP file in redboot.
Gsat
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