[PATCH v3 3/5] arm: qemu: implement enable_caches()

André Przywara andre.przywara at arm.com
Tue Jul 7 14:58:44 CEST 2020


On 07/07/2020 11:07, Ard Biesheuvel wrote:
> Add an override for enable_caches to enable the I and D caches, along
> with the cached 1:1 mapping of all of DRAM. This is needed for running
> U-Boot under virtualization with QEMU/kvm.
> 
> Signed-off-by: Ard Biesheuvel <ardb at kernel.org>
> ---
>  board/emulation/qemu-arm/qemu-arm.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/board/emulation/qemu-arm/qemu-arm.c b/board/emulation/qemu-arm/qemu-arm.c
> index 69e8ef46f1f5..1b0d543b93c1 100644
> --- a/board/emulation/qemu-arm/qemu-arm.c
> +++ b/board/emulation/qemu-arm/qemu-arm.c
> @@ -4,6 +4,7 @@
>   */
>  
>  #include <common.h>
> +#include <cpu_func.h>
>  #include <dm.h>
>  #include <fdtdec.h>
>  #include <init.h>
> @@ -94,6 +95,12 @@ void *board_fdt_blob_setup(void)
>  	return (void *)CONFIG_SYS_SDRAM_BASE;
>  }
>  
> +void enable_caches(void)
> +{
> +	 icache_enable();
> +	 dcache_enable();

It looks like there is a stray space after the tab, but regardless:

Reviewed-by: Andre Przywara <andre.przywara at arm.com>

Cheers,
Andre

> +}
> +
>  #if defined(CONFIG_EFI_RNG_PROTOCOL)
>  #include <efi_loader.h>
>  #include <efi_rng.h>
> 



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