Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / x86 / lib / relocate.c

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 (file)
index 0000000..526daaf
--- /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;
+}