ARC: Flush & invalidate D$ with a single command

[u-boot] / arch / arc / lib / relocate.c

diff --git a/arch/arc/lib/relocate.c b/arch/arc/lib/relocate.c
index 7797782563bb7f6dc736440fa6fa7aa0818a9e5a..96b4bd3d8fa6d1a2c83646b0ee7d67a695e821e8 100644 (file)
--- a/arch/arc/lib/relocate.c
+++ b/arch/arc/lib/relocate.c
@@ -6,10 +6,35 @@
 
 #include <common.h>
 #include <elf.h>
-#include <asm/sections.h>
+#include <asm-generic/sections.h>
+
+extern ulong __image_copy_start;
+extern ulong __ivt_end;
 
 DECLARE_GLOBAL_DATA_PTR;
 
+int copy_uboot_to_ram(void)
+{
+       size_t len = (size_t)&__image_copy_end - (size_t)&__image_copy_start;
+
+       if (gd->flags & GD_FLG_SKIP_RELOC)
+               return 0;
+
+       memcpy((void *)gd->relocaddr, (void *)&__image_copy_start, len);
+
+       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;
+}
+
 /*
  * Base functionality is taken from x86 version with added ARC-specifics
  */
@@ -18,6 +43,12 @@ int do_elf_reloc_fixups(void)
        Elf32_Rela *re_src = (Elf32_Rela *)(&__rel_dyn_start);
        Elf32_Rela *re_end = (Elf32_Rela *)(&__rel_dyn_end);
 
+       if (gd->flags & GD_FLG_SKIP_RELOC)
+               return 0;
+
+       debug("Section .rela.dyn is located at %08x-%08x\n",
+             (unsigned int)re_src, (unsigned int)re_end);
+
        Elf32_Addr *offset_ptr_rom, *last_offset = NULL;
        Elf32_Addr *offset_ptr_ram;
 
@@ -33,6 +64,10 @@ int do_elf_reloc_fixups(void)
                        offset_ptr_ram = (Elf32_Addr *)((ulong)offset_ptr_rom +
                                                        gd->reloc_off);
 
+                       debug("Patching value @ %08x (relocated to %08x)\n",
+                             (unsigned int)offset_ptr_rom,
+                             (unsigned int)offset_ptr_ram);
+
                        /*
                         * Use "memcpy" because target location might be
                         * 16-bit aligned on ARC so we may need to read