Thank you for all your kind answers and suggestions. I also have confirmed that the memory address over 0x2000_8000 is not accessible in the real board.
Regards, Changho Choi 2020년 9월 29일 (화) 오후 6:25, Peter Maydell <1897...@bugs.launchpad.net>님이 작성: > (If you were just interested in having a large area of contiguous RAM, > the "PSRAM" is the largest lump on this board: it's 16MB starting at > 0x8000_0000.) > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1897680 > > Title: > memory address over 0x2000_7ffc is not accessible in mps2-an505 > > Status in QEMU: > New > > Bug description: > I currently run qemu with the following options > `qemu-system-aarch64 -machine mps2-an505 -cpu cortex-m33 -m 16` > > For some reason, memory address over 0x2000_7ffc is not accessible. > It can be tested in gdb as follow. > > (gdb) x/x 0x20007ffc > 0x20007ffc: 0x00000000 > (gdb) x/x 0x20007ffd > 0x20007ffd: Cannot access memory at address 0x20007ffd > (gdb) x/x 0x20008000 > 0x20008000: Cannot access memory at address 0x20008000 > > To manage notifications about this bug go to: > https://bugs.launchpad.net/qemu/+bug/1897680/+subscriptions > -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1897680 Title: memory address over 0x2000_7ffc is not accessible in mps2-an505 Status in QEMU: New Bug description: I currently run qemu with the following options `qemu-system-aarch64 -machine mps2-an505 -cpu cortex-m33 -m 16` For some reason, memory address over 0x2000_7ffc is not accessible. It can be tested in gdb as follow. (gdb) x/x 0x20007ffc 0x20007ffc: 0x00000000 (gdb) x/x 0x20007ffd 0x20007ffd: Cannot access memory at address 0x20007ffd (gdb) x/x 0x20008000 0x20008000: Cannot access memory at address 0x20008000 To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1897680/+subscriptions