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[Qemu-devel] Questions regarding emulated UART in VersatilePB board
From: |
Ramy Sameh |
Subject: |
[Qemu-devel] Questions regarding emulated UART in VersatilePB board |
Date: |
Mon, 4 Sep 2017 02:27:00 +0200 |
Hello all,
I have 2 problems regarding UART (pl011) in the emulated board VersatilePB.
(I am using *QEMU version 2.8.1.*)
*My main goal is*:
Disturbing the UART registers (such UARTCR, UARTLCR_H ... etc) in order to
simulate hardware faults (which can make bit flips in the hardware
registers through radiation for example).
*My 2 questions are:*
*First:*
Are interrupts activated in the emulated pl011 ?
I mean, if I enabled the interrupt bits for UARTTXINTR, will this trigger
an interrupt when the FIFO reaches a certain level?
*Second:*
Another problem is that I can't find some of the UART registers (which are
in the data sheet PrimeCell UART (PL011)), in QEMU's emulated UART pl011.
*These are the registers which I can't find their matches in the structure
PL011State:*
1.) Interrupt FIFO level select register, UARTIFLS
2.) Raw interrupt status register, UARTRIS
3.) Masked interrupt status register, UARTMIS
4.) Interrupt clear register, UARTICR
5.) Peripheral identification registers, UARTPeriphID0-3
6.) PrimeCell identification registers, UARTPCellID0-3
*This is the structure where I get pl011 emulated registers:*
typedef struct PL011State
{
SysBusDevice parent_obj;
MemoryRegion iomem;
uint32_t readbuff;
uint32_t flags;
uint32_t lcr;
uint32_t rsr;
uint32_t cr;
uint32_t dmacr;
uint32_t int_enabled;
uint32_t int_level;
uint32_t read_fifo[16];
uint32_t ilpr;
uint32_t ibrd;
uint32_t fbrd;
uint32_t ifl;
int read_pos;
int read_count;
int read_trigger;
CharBackend chr;
qemu_irq irq;
const unsigned char *id;
} PL011State
--
Best Regards,
Ramy Sameh
Embedded Software Engineer
+2-010-172-777-14
- [Qemu-devel] Questions regarding emulated UART in VersatilePB board,
Ramy Sameh <=
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Peter Maydell, 2017/09/04
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Ramy Sameh, 2017/09/05
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Peter Maydell, 2017/09/05
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Ramy Sameh, 2017/09/05
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Ramy Sameh, 2017/09/06
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Peter Maydell, 2017/09/06
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Ramy Sameh, 2017/09/10
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Ramy Sameh, 2017/09/12
- Re: [Qemu-devel] Questions regarding emulated UART in VersatilePB board, Peter Maydell, 2017/09/12