diff options
| author | Jeremy Compostella <[email protected]> | 2025-03-18 10:39:40 -0700 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-04-04 12:26:35 -0600 |
| commit | 1878c32c4d4790ab171d1ca9c8182627752fb59a (patch) | |
| tree | 86b58707012e13c9e430009d729633e68c0cd7e7 | |
| parent | c5032bf3f63944464610d55c7a442758224585e6 (diff) | |
arch/x86: Add 64-bit U-Boot configuration without SPL
This commit introduces a new configuration option X86_RUN_64BIT_NO_SPL
to allow building U-Boot as a 64-bit binary without using the SPL
(Secondary Program Loader). The motivation is to simplify the boot
process for certain x86-based platforms that do not require SPL, such as
those booting directly from a 64-bit coreboot firmware.
This update revises the `X86_RUN_64BIT` configuration to more accurately
describe its role as "32-bit SPL followed by 64-bit U-Boot." It
clarifies the sequence of operations during the boot process, where the
system transitions from a 32-bit SPL (Secondary Program Loader) to the
main 64-bit U-Boot.
Signed-off-by: Jeremy Compostella <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
| -rw-r--r-- | arch/x86/Kconfig | 10 | ||||
| -rw-r--r-- | arch/x86/cpu/coreboot/Kconfig | 2 |
2 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 006a59d6fa6..dc9483ad723 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -30,7 +30,7 @@ config X86_RUN_32BIT arch_phys_memset() can be used for basic access to other memory. config X86_RUN_64BIT - bool "64-bit" + bool "32-bit SPL followed by 64-bit U-Boot" select X86_64 select SPL if !EFI_APP select SPL_SEPARATE_BSS if !EFI_APP @@ -40,6 +40,14 @@ config X86_RUN_64BIT runs through the 16-bit and 32-bit init, then switches to 64-bit mode and jumps to U-Boot proper. +config X86_RUN_64BIT_NO_SPL + bool "64-bit" + select X86_64 + help + Build U-Boot as a 64-bit binary without SPL. As U-Boot enters + in 64-bit mode, the assumption is that the silicon is fully + initialized (MP, page tables, etc.). + endchoice config X86_64 diff --git a/arch/x86/cpu/coreboot/Kconfig b/arch/x86/cpu/coreboot/Kconfig index 085302c0482..66f25533b97 100644 --- a/arch/x86/cpu/coreboot/Kconfig +++ b/arch/x86/cpu/coreboot/Kconfig @@ -26,7 +26,7 @@ config SYS_COREBOOT imply CBMEM_CONSOLE imply X86_TSC_READ_BASE imply USE_PREBOOT - select BINMAN if X86_64 + select BINMAN if X86_RUN_64BIT select SYSINFO imply SYSINFO_EXTRA |