#define MAX_UNCOMP_KERNEL_SIZE SZ_32M
/*
- * phys-to-virt patching requires that the physical to virtual offset fits
- * into the immediate field of an add/sub instruction, which comes down to the
- * 24 least significant bits being zero, and so the offset should be a multiple
- * of 16 MB. Since PAGE_OFFSET itself is a multiple of 16 MB, the physical
- * base should be aligned to 16 MB as well.
+ * phys-to-virt patching requires that the physical to virtual offset is a
+ * multiple of 2 MiB. However, using an alignment smaller than TEXT_OFFSET
+ * here throws off the memory allocation logic, so let's use the lowest power
+ * of two greater than 2 MiB and greater than TEXT_OFFSET.
*/
-#define EFI_PHYS_ALIGN SZ_16M
+#define EFI_PHYS_ALIGN max(SZ_2M, roundup_pow_of_two(TEXT_OFFSET))
/* on ARM, the FDT should be located in a lowmem region */
static inline unsigned long efi_get_max_fdt_addr(unsigned long image_addr)
/* on ARM, the initrd should be loaded in a lowmem region */
static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
{
- return round_down(image_addr, EFI_PHYS_ALIGN) + SZ_512M;
+ return round_down(image_addr, SZ_4M) + SZ_512M;
}
struct efi_arm_entry_state {