Hi Alex,
-----Original Message----- From: Alexander Graf [mailto:agraf@suse.de] Sent: Tuesday, June 21, 2016 4:37 AM To: u-boot@lists.denx.de Cc: york sun york.sun@nxp.com; Prabhakar Kushwaha prabhakar.kushwaha@nxp.com Subject: [PATCH v4 5/9] armv8: ls2080a: Declare spin tables as reserved for efi loader
The efi loader code has its own memory map, so it needs to be aware where the spin tables are located, to ensure that no code writes into those regions.
Signed-off-by: Alexander Graf agraf@suse.de
arch/arm/cpu/armv8/fsl-layerscape/fdt.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c index d17227a..91d6374 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c @@ -5,6 +5,7 @@ */
#include <common.h> +#include <efi_loader.h> #include <libfdt.h> #include <fdt_support.h> #include <phy.h> @@ -72,6 +73,11 @@ void ft_fixup_cpu(void *blob)
fdt_add_mem_rsv(blob, (uintptr_t)&secondary_boot_code, *boot_code_size); +#ifdef CONFIG_EFI_LOADER
- efi_add_memory_map((uintptr_t)&secondary_boot_code,
ALIGN(*boot_code_size, EFI_PAGE_SIZE) >>EFI_PAGE_SHIFT,
EFI_RESERVED_MEMORY_TYPE, false); #endif} #endif
I believe this place(during DTS fix-up) is too late for adding this memory in EFI memory map. Not sure, grub2 user may write this memory before launching Linux.
--prabhakar