diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/spl.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/spl.h b/include/spl.h index 488adbeb1bc..9cfba98db55 100644 --- a/include/spl.h +++ b/include/spl.h @@ -270,6 +270,16 @@ enum spl_sandbox_flags { * struct spl_image_info - Information about the SPL image being loaded * * @fdt_size: Size of the FDT for the image (0 if none) + * @buf: Buffer where the image should be loaded + * @fdt_buf: Buffer where the FDT will be copied by spl_reloc_jump(), only used + * if @fdt_size is non-zero + * @fdt_start: Pointer to the FDT to be copied (must be set up before calling + * spl_reloc_jump() + * @rcode_buf: Buffer to hold the relocating-jump code + * @stack_prot: Pointer to the stack-protection value, used to ensure the stack + * does not overflow + * @reloc_offset: offset between the relocating-jump code and its place in the + * currently running image */ struct spl_image_info { const char *name; @@ -290,6 +300,14 @@ struct spl_image_info { ulong dcrc_length; ulong dcrc; #endif +#if CONFIG_IS_ENABLED(RELOC_LOADER) + void *buf; + void *fdt_buf; + void *fdt_start; + void *rcode_buf; + uint *stack_prot; + ulong reloc_offset; +#endif }; /* function to jump to an image from SPL */ @@ -1155,4 +1173,31 @@ int spl_write_upl_handoff(struct spl_image_info *spl_image); */ void spl_upl_init(void); +/** + * spl_reloc_prepare() - Prepare the relocating loader ready for use + * + * Sets up the relocating loader ready for use. This must be called before + * spl_reloc_jump() can be used. + * + * The memory layout is figured out, making use of the space between the top of + * the current image and the top of memory. + * + * Once this is done, the relocating-jump code is copied into place at + * image->rcode_buf + * + * @image: SPL image containing information. This is updated with various + * necessary values. On entry, the size and fdt_size fields must be valid + * @addrp: Returns the address to which the image should be loaded into memory + * Return 0 if OK, -ENOSPC if there is not enough memory available + */ +int spl_reloc_prepare(struct spl_image_info *image, ulong *addrp); + +/** + * spl_reloc_jump() - Jump to an image, via a 'relocating-jump' region + * + * @image: SPL image to jump to + * @func: Function to call in the final image + */ +int spl_reloc_jump(struct spl_image_info *image, spl_jump_to_image_t func); + #endif |