This is the mail archive of the
ecos-discuss@sources.redhat.com
mailing list for the eCos project.
Memory layout
- From: "Agarwal, Lomesh" <lomesh dot agarwal at intel dot com>
- To: eCos Discuss <ecos-discuss at sources dot redhat dot com>
- Date: Sun, 7 Apr 2002 16:14:51 -0700
- Subject: [ECOS] Memory layout
I want to burn RedBoot in a flash. I should use "ROM" start type. Right?
On my platform during boot Flash is aliased at 0 and after unaliasing flash
my DRAM is at 0 address. I have modified the rom.ldi file as follows:
MEMORY
{
ram : ORIGIN = 0xA0000000, LENGTH = 0x2000000
rom : ORIGIN = 0x00000000, LENGTH = 0x800000
}
SECTIONS
{
SECTIONS_BEGIN
SECTION_rom_vectors (ram, 0xA0000000, AT(0x00000000)) // vector page
gets remapped from ROM to RAM
SECTION_text (rom, 0x00002000, LMA_EQ_VMA)
SECTION_fini (rom, ALIGN (0x4), LMA_EQ_VMA)
SECTION_rodata (rom, ALIGN (0x4), LMA_EQ_VMA)
SECTION_rodata1 (rom, ALIGN (0x4), LMA_EQ_VMA)
SECTION_fixup (rom, ALIGN (0x4), LMA_EQ_VMA)
SECTION_gcc_except_table (rom, ALIGN (0x4), LMA_EQ_VMA)
SECTION_fixed_vectors (rom, 0x20, LMA_EQ_VMA)
SECTION_data (ram, 0xA000A000, FOLLOWING (.gcc_except_table))
SECTION_bss (ram, ALIGN (0x4), LMA_EQ_VMA)
CYG_LABEL_DEFN(__heap1) = ALIGN (0x8);
// CYG_LABEL_DEFN(__pci_window) = 0xf00000; . =
CYG_LABEL_DEFN(__pci_window) + 0x100000;
SECTIONS_END
}
I wanted to know whether this is right or not?
Can someone help?
Thanks,
Lomesh
--
Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss