From 19d41f495a24f112ed62c041d18e53334e1b791d Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sun, 16 Jun 2024 19:31:05 +0200 Subject: efi_loader: avoid duplicate weak invalidate_icache_all() If multiple weak implementations of a weak function exist, it is unclear which one the linker should chose. cmd/cache.c already defines a weak invalidate_icache_all(). We don't need a call to invalidate_icache_all() on x86. ARM, RISC-V, and Sandbox provide an implementation. Signed-off-by: Heinrich Schuchardt Reviewed-by: Ilias Apalodimas --- lib/efi_loader/efi_image_loader.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'lib/efi_loader/efi_image_loader.c') diff --git a/lib/efi_loader/efi_image_loader.c b/lib/efi_loader/efi_image_loader.c index 60424360328..45dc5b6b244 100644 --- a/lib/efi_loader/efi_image_loader.c +++ b/lib/efi_loader/efi_image_loader.c @@ -173,11 +173,6 @@ static efi_status_t efi_loader_relocate(const IMAGE_BASE_RELOCATION *rel, return EFI_SUCCESS; } -void __weak invalidate_icache_all(void) -{ - /* If the system doesn't support icache_all flush, cross our fingers */ -} - /** * efi_set_code_and_data_type() - determine the memory types to be used for code * and data. @@ -986,7 +981,13 @@ efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, /* Flush cache */ flush_cache((ulong)efi_reloc, ALIGN(virt_size, EFI_CACHELINE_SIZE)); - invalidate_icache_all(); + + /* + * If on x86 a write affects a prefetched instruction, + * the prefetch queue is invalidated. + */ + if (!CONFIG_IS_ENABLED(X86)) + invalidate_icache_all(); /* Populate the loaded image interface bits */ loaded_image_info->image_base = efi_reloc; -- cgit v1.2.3