Move the core relocation code into a separate function so that the checking code can be used for 64-bit relocation also.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Mention the commit ID containing information about the need for reloc checks - Drop the pre-panic printf() of the relocation addresses
Changes in v2: None
arch/x86/lib/relocate.c | 55 ++++++++++++++++++++++++++++--------------------- 1 file changed, 31 insertions(+), 24 deletions(-)
diff --git a/arch/x86/lib/relocate.c b/arch/x86/lib/relocate.c index 0d683bfc122..861e6675b3b 100644 --- a/arch/x86/lib/relocate.c +++ b/arch/x86/lib/relocate.c @@ -47,38 +47,18 @@ int clear_bss(void) return 0; }
-/* - * This function has more error checking than you might expect. Please see - * the commit message for more informaiton. - */ -int do_elf_reloc_fixups(void) +static void do_elf_reloc_fixups32(unsigned int text_base, uintptr_t size, + Elf32_Rel *re_src, Elf32_Rel *re_end) { - Elf32_Rel *re_src = (Elf32_Rel *)(&__rel_dyn_start); - Elf32_Rel *re_end = (Elf32_Rel *)(&__rel_dyn_end); - Elf32_Addr *offset_ptr_rom, *last_offset = NULL; Elf32_Addr *offset_ptr_ram; - unsigned int text_base = 0; - - /* The size of the region of u-boot that runs out of RAM. */ - uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start; - - if (gd->flags & GD_FLG_SKIP_RELOC) - return 0; - if (re_src == re_end) - panic("No relocation data");
-#ifdef CONFIG_SYS_TEXT_BASE - text_base = CONFIG_SYS_TEXT_BASE; -#else - panic("No CONFIG_SYS_TEXT_BASE"); -#endif do { /* Get the location from the relocation entry */ - offset_ptr_rom = (Elf32_Addr *)re_src->r_offset; + offset_ptr_rom = (Elf32_Addr *)(uintptr_t)re_src->r_offset;
/* Check that the location of the relocation is in .text */ - if (offset_ptr_rom >= (Elf32_Addr *)text_base && + if (offset_ptr_rom >= (Elf32_Addr *)(uintptr_t)text_base && offset_ptr_rom > last_offset) {
/* Switch to the in-RAM version */ @@ -103,6 +83,33 @@ int do_elf_reloc_fixups(void) last_offset = offset_ptr_rom;
} while (++re_src < re_end); +} + +/* + * This function has more error checking than you might expect. Please see + * this commit message for more information: + * 62f7970a x86: Add error checking to x86 relocation code + */ +int do_elf_reloc_fixups(void) +{ + void *re_src = (void *)(&__rel_dyn_start); + void *re_end = (void *)(&__rel_dyn_end); + uint text_base; + + /* The size of the region of u-boot that runs out of RAM. */ + uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start; + + if (gd->flags & GD_FLG_SKIP_RELOC) + return 0; + if (re_src == re_end) + panic("No relocation data"); + +#ifdef CONFIG_SYS_TEXT_BASE + text_base = CONFIG_SYS_TEXT_BASE; +#else + panic("No CONFIG_SYS_TEXT_BASE"); +#endif + do_elf_reloc_fixups32(text_base, size, re_src, re_end);
return 0; }