diff options
| -rw-r--r-- | arch/x86/lib/relocate.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/x86/lib/relocate.c b/arch/x86/lib/relocate.c index 3a38e52..3e370f2 100644 --- a/arch/x86/lib/relocate.c +++ b/arch/x86/lib/relocate.c @@ -73,12 +73,16 @@ 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) { Elf32_Rel *re_src = (Elf32_Rel *)(&__rel_dyn_start); Elf32_Rel *re_end = (Elf32_Rel *)(&__rel_dyn_end); - Elf32_Addr *offset_ptr_rom; + Elf32_Addr *offset_ptr_rom, *last_offset = NULL; Elf32_Addr *offset_ptr_ram; /* The size of the region of u-boot that runs out of RAM. */ @@ -89,7 +93,8 @@ int do_elf_reloc_fixups(void) offset_ptr_rom = (Elf32_Addr *)re_src->r_offset; /* Check that the location of the relocation is in .text */ - if (offset_ptr_rom >= (Elf32_Addr *)CONFIG_SYS_TEXT_BASE) { + if (offset_ptr_rom >= (Elf32_Addr *)CONFIG_SYS_TEXT_BASE && + offset_ptr_rom > last_offset) { /* Switch to the in-RAM version */ offset_ptr_ram = (Elf32_Addr *)((ulong)offset_ptr_rom + @@ -100,8 +105,19 @@ int do_elf_reloc_fixups(void) *offset_ptr_ram <= (CONFIG_SYS_TEXT_BASE + size)) { *offset_ptr_ram += gd->reloc_off; + } else { + debug(" %p: rom reloc %x, ram %p, value %x," + " limit %lx\n", re_src, + re_src->r_offset, offset_ptr_ram, + *offset_ptr_ram, + CONFIG_SYS_TEXT_BASE + size); } + } else { + debug(" %p: rom reloc %x, last %p\n", re_src, + re_src->r_offset, last_offset); } + last_offset = offset_ptr_rom; + } while (++re_src < re_end); return 0; |