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Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition |
Date: |
Thu, 9 Feb 2012 12:03:45 +0000 |
User-agent: |
KMail/1.13.7 (Linux/3.1.0-1-amd64; KDE/4.6.5; x86_64; ; ) |
> /* multicore boards that use the default secondary core boot functions
> * can ignore these two function calls. If the default functions won't
> * work, then write_secondary_boot() should write a suitable blob of
> * code mimicing the secondary CPU startup process used by the board's
> * boot loader/boot ROM code, and secondary_cpu_reset_hook() should
> * perform any necessary CPU reset handling and set the PC for thei
> * secondary CPUs to point at this boot blob.
> */
> void (*write_secondary_boot)(CPUState *env,
> const struct arm_boot_info *info);
> void (*secondary_cpu_reset_hook)(CPUState *env,
> const struct arm_boot_info *info);
> };
>
> The addresses, ints and string are easy, but the hard ones are the
> callbacks. The qdev ptr is a possible implementation but I see a movement
> away from that. I guess the solution is to provide an abstraction through
> QOM no? The boards that need to implement their own secondary
> boot-loop/reset (theres only 1) or atag boot sequence (again only 1) create
> an object that inherits for the arm boot device and instantiate that?
This sounds like an ideal use-case for derived classes and virtual functions.
Paul
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, (continued)
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Alexander Graf, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Paul Brook, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Crosthwaite, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Paul Brook, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Crosthwaite, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Paul Brook, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Crosthwaite, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Paul Brook, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Anthony Liguori, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Crosthwaite, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition,
Paul Brook <=
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Anthony Liguori, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Anthony Liguori, 2012/02/08
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Maydell, 2012/02/20
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Andreas Färber, 2012/02/20
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Maydell, 2012/02/20
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Crosthwaite, 2012/02/21
- Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Peter Maydell, 2012/02/21
Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Anthony Liguori, 2012/02/08
Re: [Qemu-devel] [RFC PATCH] arm boot: added QOM device definition, Andreas Färber, 2012/02/09