Re: [Bug 1897680] Re: memory address over 0x2000_7ffc is not accessible in mps2-an505

[Changho Choi]

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 <1897680@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
>

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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