[Qemu-devel] Memory Map

[Salvatore Lionetti]

Hi,

This is what my board do

cpu_register_physical_memory(0, 128*1024*1024, ...)
cpu_register_physical_memory(0xFF800000, 8*1024*1024, ...)

and this layout does not change over the entire live (virtual) of the board.

For the following offset (1st column) and size in bytes (2nd column)
{0x000000, 512},
{0x000200, 16},
{0x000300, 32},
{0x000400, 32},
{0x000500, 64},
{0x000600, 64},
{0x000700, 128},
{0x000800, 30},
{0x000900, 256},
{0x000A00, 44},
{0x000B00, 256},
{0x000C00, 24},
{0x000F00, 20},
{0x001000, 20},
{0x001100, 20},
{0x001400, 168},
{0x001800, 24},
{0x002000, 4096},
{0x003000, 24},
{0x003100, 24},
{0x004500, 36},
{0x005000, 224},
{0x008000, 768},
{0x008300, 16},

i do, for each item,

a = cpu_register_io_memory(r, w, o, DEVICE_NATIVE_ENDIAN)
cpu_register_physical_memory(_base+offset, len, a)

And _base could be reprogrammed at any time. So before to change _base i:

cpu_unregister_io_memory(a)

What i see is that accessing to _base+
_base+0x005000 => Wake up r/w with offset 0
_base+0x000204 => Wake up r/w with offset 0x204

So the question
- Am i wrong something?
- Is possible to map address with last TARGET_PAGE_BITS (es 0x200) bits set?

Have a good day