On 5 January 2015 at 16:14, Eric Auger <eric.au...@linaro.org> wrote:
> Device tree nodes for the platform bus and its children dynamic sysbus
> devices are added in a machine init done notifier. To load the dtb once,
> after those latter nodes are built and before ROM freeze, the actual
> arm_load_kernel existing code is moved into a notifier notify function,
> arm_load_kernel_notify. arm_load_kernel now only registers the
> corresponding notifier.
>
> Machine files that do not support platform bus stay unchanged. Machine
> files willing to support dynamic sysbus devices must call arm_load_kernel
> before sysbus-fdt arm_register_platform_bus_fdt_creator to make sure
> dynamic sysbus device nodes are integrated in the dtb.
> --- a/include/hw/arm/arm.h
> +++ b/include/hw/arm/arm.h
> @@ -19,6 +19,16 @@ qemu_irq *armv7m_init(MemoryRegion *system_memory,
> int flash_size, int sram_size,
> const char *kernel_filename, const char *cpu_model);
>
> +/*
> + * struct used as a parameter of the arm_load_kernel machine init
> + * done notifier
> + */
> +typedef struct {
> + ARMCPU *cpu; /* handle to the first cpu object */
> + Notifier notifier; /* actual notifier */
This is an odd order -- why not put 'notifier' first?
> +} ArmLoadKernelNotifier;
> +
> +
This breaks building of the linux-user targets:
In file included from
/home/petmay01/linaro/qemu-from-laptop/qemu/target-arm/cpu.c:29:0:
/home/petmay01/linaro/qemu-from-laptop/qemu/include/hw/arm/arm.h:28:5:
error: unknown type name ‘Notifier’
Notifier notifier; /* actual notifier */
^
make[1]: *** [target-arm/cpu.o] Error 1
Including "qemu/notify.h" in this file fixes it.
Also, stray blank line.
Otherwise looks OK. (It seems a slight shame to have to drag
notify.h into everything that includes arm.h when really the
notifier is just a detail of the implementation of boot.c,
but I can't see a nice way round that, so never mind.)
-- PMM
