Hello, I think I suffered from random kernel crashed due to this issue. Could you please also submit this patch to downstream Marvell u-boot at github PR?
31.03.2018 17:13, Mark Kettenis пишет: > Currently U-Boot doesn't make any effort to reserve the memory used by > ARM Trusted Firmware on these platforms. The result is that the > memory is listed as available in the EFI memory map. And as soon as a > loaded kernel tries to use this memory things explode. I've seen this > with the OpenBSD kernel. But I totally expect a Linux kernel to > suffer the same fate. > > I'm currently using the diff below, but it is not entirely clear to me > if arch_early_init_r() is the appropriate place to do this. I'm also > wondering whether the block should also be marked as reserved in the > FDT using fdt_add_mem_rsv(). If the latter is required this probably > needs to be done by ft_board_setup() or ft_system_setup(). > > The address and size of the region have been taken from Marvell's ATF > fork at > > https://github.com/MarvellEmbeddedProcessors/atf-marvell > > The memory layout is defined in > > plat/marvell/a8k/common/include/platform_def.h > > where there are lots of defines and a diagram that attempt to describe > the memory. It is not entirely obvious to me what part needs to be > reserved. But 0x0400000-0x04200000 works. > > > > > diff --git a/arch/arm/mach-mvebu/arm64-common.c > b/arch/arm/mach-mvebu/arm64-common.c > index 3c84043a2c..895cd2852f 100644 > --- a/arch/arm/mach-mvebu/arm64-common.c > +++ b/arch/arm/mach-mvebu/arm64-common.c > @@ -95,5 +95,11 @@ int arch_early_init_r(void) > pci_init(); > #endif > > +#ifdef CONFIG_EFI_LOADER > + /* Reserve trusted SRAM section */ > + efi_add_memory_map(0x04000000, 0x00200000 >> EFI_PAGE_SHIFT, > + EFI_RESERVED_MEMORY_TYPE, false); > +#endif > + > return 0; > } > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > https://lists.denx.de/listinfo/u-boot > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot