Blackfin: initial XIP support

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 13 insertions, 3 deletions

diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index a0bc7d3e1bff..b54ba45db5f1 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -220,6 +220,16 @@ void __init bfin_relocate_l1_mem(void)
                 memcpy(_stext_l2, _l2_lma, l2_len);
 }
 
+#ifdef CONFIG_ROMKERNEL
+void __init bfin_relocate_xip_data(void)
+{
+        early_shadow_stamp();
+
+        memcpy(_sdata, _data_lma, (unsigned long)_data_len - THREAD_SIZE + sizeof(struct thread_info));
+        memcpy(_sinitdata, _init_data_lma, (unsigned long)_init_data_len);
+}
+#endif
+
 /* add_memory_region to memmap */
 static void __init add_memory_region(unsigned long long start,
                               unsigned long long size, int type)
@@ -504,7 +514,7 @@ static __init void memory_setup(void)
 #endif
         unsigned long max_mem;
 
-        _rambase = (unsigned long)_stext;
+        _rambase = CONFIG_BOOT_LOAD;
         _ramstart = (unsigned long)_end;
 
         if (DMA_UNCACHED_REGION > (_ramend - _ramstart)) {
@@ -1261,8 +1271,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
         seq_printf(m, "board memory\t: %ld kB (0x%p -> 0x%p)\n",
                  physical_mem_end >> 10, (void *)0, (void *)physical_mem_end);
         seq_printf(m, "kernel memory\t: %d kB (0x%p -> 0x%p)\n",
-                ((int)memory_end - (int)_stext) >> 10,
-                _stext,
+                ((int)memory_end - (int)_rambase) >> 10,
+                (void *)_rambase,
                 (void *)memory_end);
         seq_printf(m, "\n");