+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2008-2011
* Graeme Russ, <graeme.russ@gmail.com>
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
-#include <inttypes.h>
-#include <libfdt.h>
-#include <malloc.h>
+#include <log.h>
+#include <relocate.h>
#include <asm/u-boot-x86.h>
-#include <asm/relocate.h>
#include <asm/sections.h>
#include <elf.h>
int copy_uboot_to_ram(void)
{
- size_t len = (size_t)&__data_end - (size_t)&__text_start;
+ size_t len = (uintptr_t)&__data_end - (uintptr_t)&__text_start;
+ if (gd->flags & GD_FLG_SKIP_RELOC)
+ return 0;
memcpy((void *)gd->relocaddr, (void *)&__text_start, len);
return 0;
}
-int copy_fdt_to_ram(void)
-{
- if (gd->new_fdt) {
- ulong fdt_size;
-
- fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
-
- memcpy(gd->new_fdt, gd->fdt_blob, fdt_size);
- debug("Relocated fdt from %p to %p, size %lx\n",
- gd->fdt_blob, gd->new_fdt, fdt_size);
- gd->fdt_blob = gd->new_fdt;
- }
-
- return 0;
-}
-
int clear_bss(void)
{
ulong dst_addr = (ulong)&__bss_start + gd->reloc_off;
- size_t len = (size_t)&__bss_end - (size_t)&__bss_start;
+ size_t len = (uintptr_t)&__bss_end - (uintptr_t)&__bss_start;
+ if (gd->flags & GD_FLG_SKIP_RELOC)
+ return 0;
memset((void *)dst_addr, 0x00, len);
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)
+#if CONFIG_IS_ENABLED(X86_64)
+static void do_elf_reloc_fixups64(unsigned int text_base, uintptr_t size,
+ Elf64_Rela *re_src, Elf64_Rela *re_end)
{
- Elf32_Rel *re_src = (Elf32_Rel *)(&__rel_dyn_start);
- Elf32_Rel *re_end = (Elf32_Rel *)(&__rel_dyn_end);
+ Elf64_Addr *offset_ptr_rom, *last_offset = NULL;
+ Elf64_Addr *offset_ptr_ram;
+
+ do {
+ unsigned long long type = ELF64_R_TYPE(re_src->r_info);
+ if (type != R_X86_64_RELATIVE) {
+ printf("%s: unsupported relocation type 0x%llx "
+ "at %p, ", __func__, type, re_src);
+ printf("offset = 0x%llx\n", re_src->r_offset);
+ continue;
+ }
+
+ /* Get the location from the relocation entry */
+ offset_ptr_rom = (Elf64_Addr *)(uintptr_t)re_src->r_offset;
+
+ /* Check that the location of the relocation is in .text */
+ if (offset_ptr_rom >= (Elf64_Addr *)(uintptr_t)text_base &&
+ offset_ptr_rom > last_offset) {
+ /* Switch to the in-RAM version */
+ offset_ptr_ram = (Elf64_Addr *)((ulong)offset_ptr_rom +
+ gd->reloc_off);
+
+ /* Check that the target points into .text */
+ if (*offset_ptr_ram >= text_base &&
+ *offset_ptr_ram <= text_base + size) {
+ *offset_ptr_ram = gd->reloc_off +
+ re_src->r_addend;
+ } else {
+ debug(" %p: %lx: rom reloc %lx, ram %p, value %lx, limit %lX\n",
+ re_src, (ulong)re_src->r_info,
+ (ulong)re_src->r_offset, offset_ptr_ram,
+ (ulong)*offset_ptr_ram, text_base + size);
+ }
+ } else {
+ debug(" %p: %lx: rom reloc %lx, last %p\n", re_src,
+ (ulong)re_src->r_info, (ulong)re_src->r_offset,
+ last_offset);
+ }
+ last_offset = offset_ptr_rom;
+
+ } while (++re_src < re_end);
+}
+#else
+static void do_elf_reloc_fixups32(unsigned int text_base, uintptr_t size,
+ Elf32_Rel *re_src, Elf32_Rel *re_end)
+{
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. */
- uintptr_t size = (uintptr_t)&__bss_end - (uintptr_t)&__text_start;
+ do {
+ unsigned int type = ELF32_R_TYPE(re_src->r_info);
- if (re_src == re_end)
- panic("No relocation data");
+ if (type != R_386_RELATIVE) {
+ printf("%s: unsupported relocation type 0x%x "
+ "at %p, ", __func__, type, re_src);
+ printf("offset = 0x%x\n", re_src->r_offset);
+ continue;
+ }
- 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 *)CONFIG_SYS_TEXT_BASE &&
- offset_ptr_rom > last_offset) {
+ if (offset_ptr_rom >= (Elf32_Addr *)(uintptr_t)text_base &&
+ offset_ptr_rom > last_offset) {
/* Switch to the in-RAM version */
offset_ptr_ram = (Elf32_Addr *)((ulong)offset_ptr_rom +
gd->reloc_off);
/* Check that the target points into .text */
- if (*offset_ptr_ram >= CONFIG_SYS_TEXT_BASE &&
- *offset_ptr_ram <=
- (CONFIG_SYS_TEXT_BASE + size)) {
+ if (*offset_ptr_ram >= text_base &&
+ *offset_ptr_ram <= text_base + size) {
*offset_ptr_ram += gd->reloc_off;
} else {
- debug(" %p: rom reloc %x, ram %p, value %x,"
- " limit %" PRIXPTR "\n", re_src,
- re_src->r_offset, offset_ptr_ram,
- *offset_ptr_ram,
- CONFIG_SYS_TEXT_BASE + size);
+ debug(" %p: rom reloc %x, ram %p, value %x, limit %lX\n",
+ re_src, re_src->r_offset, offset_ptr_ram,
+ *offset_ptr_ram, text_base + size);
}
} else {
debug(" %p: rom reloc %x, last %p\n", re_src,
last_offset = offset_ptr_rom;
} while (++re_src < re_end);
+}
+#endif
+
+/*
+ * 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
+#if CONFIG_IS_ENABLED(X86_64)
+ do_elf_reloc_fixups64(text_base, size, re_src, re_end);
+#else
+ do_elf_reloc_fixups32(text_base, size, re_src, re_end);
+#endif
return 0;
}
projects / oweals / u-boot.git / blobdiff