diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2020-09-10 17:09:45 +0300 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2020-09-16 18:53:42 +0300 |
| commit | 6208857b8f7ebdfe84e1be7573be4552a5896a0d (patch) | |
| tree | 39ed3fecefb71f74bc9b30e3fa2eac17cf1ca115 /drivers/firmware/efi/libstub | |
| parent | f30f242fb1319e616fbcf94a43195a1c57db99b8 (diff) | |
| download | linux-6208857b8f7ebdfe84e1be7573be4552a5896a0d.tar.xz | |
efi/libstub: arm32: Base FDT and initrd placement on image address
The way we use the base of DRAM in the EFI stub is problematic as it
is ill defined what the base of DRAM actually means. There are some
restrictions on the placement of FDT and initrd which are defined in
terms of dram_base, but given that the placement of the kernel in
memory is what defines these boundaries (as on ARM, this is where the
linear region starts), it is better to use the image address in these
cases, and disregard dram_base altogether.
Reviewed-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Tested-by: Maxim Uvarov <maxim.uvarov@linaro.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/libstub')
| -rw-r--r-- | drivers/firmware/efi/libstub/arm32-stub.c | 2 | ||||
| -rw-r--r-- | drivers/firmware/efi/libstub/efi-stub.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/drivers/firmware/efi/libstub/arm32-stub.c b/drivers/firmware/efi/libstub/arm32-stub.c index d08e5d55838c..bcf770c2ce02 100644 --- a/drivers/firmware/efi/libstub/arm32-stub.c +++ b/drivers/firmware/efi/libstub/arm32-stub.c @@ -252,7 +252,7 @@ efi_status_t handle_kernel_image(unsigned long *image_addr, efi_status_t status; /* use a 16 MiB aligned base for the decompressed kernel */ - kernel_base = round_up(dram_base, SZ_16M) + TEXT_OFFSET; + kernel_base = round_up(dram_base, EFI_PHYS_ALIGN) + TEXT_OFFSET; /* * Note that some platforms (notably, the Raspberry Pi 2) put diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c index a5a405d8ab44..65a0070010a1 100644 --- a/drivers/firmware/efi/libstub/efi-stub.c +++ b/drivers/firmware/efi/libstub/efi-stub.c @@ -262,7 +262,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, efi_info("Generating empty DTB\n"); if (!efi_noinitrd) { - max_addr = efi_get_max_initrd_addr(dram_base, image_addr); + max_addr = efi_get_max_initrd_addr(image_addr); status = efi_load_initrd(image, &initrd_addr, &initrd_size, ULONG_MAX, max_addr); if (status != EFI_SUCCESS) @@ -306,7 +306,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, install_memreserve_table(); status = allocate_new_fdt_and_exit_boot(handle, &fdt_addr, - efi_get_max_fdt_addr(dram_base), + efi_get_max_fdt_addr(image_addr), initrd_addr, initrd_size, cmdline_ptr, fdt_addr, fdt_size); if (status != EFI_SUCCESS) |