On 06/12/2018 05:36 PM, Bin Meng wrote:
Since commit f3b5056c4e72 ("efi_loader: split README.efi into two separate documents"), the original README.efi was renamed to README.u-boot_on_efi, but x86 doc still refers to the old one.
This updates the x86 doc to reference both README.u-boot_on_efi and README.uefi.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
Changes in v2:
- update the x86 doc to reference also README.uefi
doc/README.x86 | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/doc/README.x86 b/doc/README.x86 index 78664c3..9f657df 100644 --- a/doc/README.x86 +++ b/doc/README.x86 @@ -1134,18 +1134,18 @@ the "Power" submenu from the Windows start menu. EFI Support
U-Boot supports booting as a 32-bit or 64-bit EFI payload, e.g. with UEFI. -This is enabled with CONFIG_EFI_STUB. U-Boot can also run as an EFI -application, with CONFIG_EFI_APP. The CONFIG_EFI_LOADER option, where U-Booot -provides an EFI environment to the kernel (i.e. replaces UEFI completely but -provides the same EFI run-time services) is not currently supported on x86. +This is enabled with CONFIG_EFI_STUB to boot from both 32-bit and 64-bit +UEFI BIOS. U-Boot can also run as an EFI application, with CONFIG_EFI_APP. +The CONFIG_EFI_LOADER option, where U-Booot provides an EFI environment to +the kernel (i.e. replaces UEFI completely but provides the same EFI run-time +services) is not currently supported on x86.
Do you mean "is not currently supported on x86 in conjunction with EFI_STUB" or do you mean "still has bugs on x86"?
On qemu-x86_defconfig I can start EFI applications like the helloworld.efi and ipxe. It is only the Linux kernel that has a problem with memory setup. That is of cause a bug that needs further attention.
Best regards
Heinrich
-See README.efi for details of EFI support in U-Boot. +See README.u-boot_on_efi and README.uefi for details of EFI support in U-Boot.
64-bit Support
U-Boot supports booting a 64-bit kernel directly and is able to change to -64-bit mode to do so. It also supports (with CONFIG_EFI_STUB) booting from -both 32-bit and 64-bit UEFI. However, U-Boot itself is currently always built +64-bit mode to do so. However, U-Boot itself is currently always built in 32-bit mode. Some access to the full memory range is provided with arch_phys_memset().