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Diffstat (limited to 'qemu/roms/u-boot/arch/x86/lib/relocate.c')
-rw-r--r--qemu/roms/u-boot/arch/x86/lib/relocate.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/x86/lib/relocate.c b/qemu/roms/u-boot/arch/x86/lib/relocate.c
new file mode 100644
index 000000000..526daaf93
--- /dev/null
+++ b/qemu/roms/u-boot/arch/x86/lib/relocate.c
@@ -0,0 +1,111 @@
+/*
+ * (C) Copyright 2008-2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
+ *
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * (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 <libfdt.h>
+#include <malloc.h>
+#include <asm/u-boot-x86.h>
+#include <asm/relocate.h>
+#include <asm/sections.h>
+#include <elf.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int copy_uboot_to_ram(void)
+{
+ size_t len = (size_t)&__data_end - (size_t)&__text_start;
+
+ 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;
+
+ 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)
+{
+ 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;
+
+ /* 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 {
+ /* Get the location from the relocation entry */
+ 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 &&
+ 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)) {
+ *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;
+}