# causing the original tools to complain when checking image integrity.
# So disregard it when calculating the payload size in the zimage header.
zboot-method-y := $(comp-type-y)_with_size
-zboot-size-len-y := 12
+zboot-size-len-y := 4
zboot-method-$(CONFIG_KERNEL_GZIP) := gzip
-zboot-size-len-$(CONFIG_KERNEL_GZIP) := 8
-
-# Copy the SizeOfHeaders and SizeOfCode fields from the payload to the end of
-# the compressed image. Note that this presupposes a PE header offset of 64
-# bytes, which is what arm64, RISC-V and LoongArch use.
-quiet_cmd_compwithsize = $(quiet_cmd_$(zboot-method-y))
- cmd_compwithsize = $(cmd_$(zboot-method-y)) && ( \
- dd status=none if=$< bs=4 count=1 skip=37 ; \
- dd status=none if=$< bs=4 count=1 skip=23 ) >> $@
+zboot-size-len-$(CONFIG_KERNEL_GZIP) := 0
$(obj)/vmlinuz: $(obj)/vmlinux.bin FORCE
- $(call if_changed,compwithsize)
+ $(call if_changed,$(zboot-method-y))
OBJCOPYFLAGS_vmlinuz.o := -I binary -O $(EFI_ZBOOT_BFD_TARGET) $(EFI_ZBOOT_OBJCOPY_FLAGS) \
--rename-section .data=.gzdata,load,alloc,readonly,contents
#include <linux/efi.h>
#include <asm/efi.h>
+#include <asm/image.h>
#include <asm/memory.h>
#include <asm/sysreg.h>
#define DCTYPE "cvau"
#endif
+u32 __weak code_size;
+
void efi_cache_sync_image(unsigned long image_base,
- unsigned long alloc_size,
- unsigned long code_size)
+ unsigned long alloc_size)
{
u32 ctr = read_cpuid_effective_cachetype();
u64 lsize = 4 << cpuid_feature_extract_unsigned_field(ctr,
/* only perform the cache maintenance if needed for I/D coherency */
if (!(ctr & BIT(CTR_EL0_IDC_SHIFT))) {
+ unsigned long base = image_base;
+ unsigned long size = code_size;
+
do {
- asm("dc " DCTYPE ", %0" :: "r"(image_base));
- image_base += lsize;
- code_size -= lsize;
- } while (code_size >= lsize);
+ asm("dc " DCTYPE ", %0" :: "r"(base));
+ base += lsize;
+ size -= lsize;
+ } while (size >= lsize);
}
asm("ic ialluis");
dsb(ish);
isb();
+
+ efi_remap_image(image_base, alloc_size, code_size);
}
unsigned long __weak primary_entry_offset(void)
void free_screen_info(struct screen_info *si);
void efi_cache_sync_image(unsigned long image_base,
- unsigned long alloc_size,
- unsigned long code_size);
+ unsigned long alloc_size);
struct efi_smbios_record {
u8 type;
}
void __weak efi_cache_sync_image(unsigned long image_base,
- unsigned long alloc_size,
- unsigned long code_size)
+ unsigned long alloc_size)
{
// Provided by the arch to perform the cache maintenance necessary for
// executable code loaded into memory to be safe for execution.
efi_zboot_entry(efi_handle_t handle, efi_system_table_t *systab)
{
unsigned long compressed_size = _gzdata_end - _gzdata_start;
- unsigned long image_base, alloc_size, code_size;
+ unsigned long image_base, alloc_size;
efi_loaded_image_t *image;
efi_status_t status;
char *cmdline_ptr;
efi_info("Decompressing Linux Kernel...\n");
// SizeOfImage from the compressee's PE/COFF header
- alloc_size = round_up(get_unaligned_le32(_gzdata_end - 12),
+ alloc_size = round_up(get_unaligned_le32(_gzdata_end - 4),
EFI_ALLOC_ALIGN);
- // SizeOfHeaders and SizeOfCode from the compressee's PE/COFF header
- code_size = get_unaligned_le32(_gzdata_end - 4) +
- get_unaligned_le32(_gzdata_end - 8);
-
// If the architecture has a preferred address for the image,
// try that first.
image_base = alloc_preferred_address(alloc_size);
goto free_image;
}
- efi_cache_sync_image(image_base, alloc_size, code_size);
-
- efi_remap_image(image_base, alloc_size, code_size);
+ efi_cache_sync_image(image_base, alloc_size);
status = efi_stub_common(handle, image, image_base, cmdline_ptr);