Blackfin: move gd/bd to bss by default

We don't need these setup manually, so let the bss do the rest.  On
Blackfin systems, we clear the bss before executing any C code that
would use these, so this should be fine.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/arch/blackfin/include/asm/config.h b/arch/blackfin/include/asm/config.h
index 1a8de4906da3f52b017d7cb520f7698832dac374..25cd8338657142f5c73d46addaa01a00b89e2aa5 100644 (file)
--- a/arch/blackfin/include/asm/config.h
+++ b/arch/blackfin/include/asm/config.h
@@ -109,14 +109,8 @@
 #ifndef CONFIG_SYS_MALLOC_BASE
 # define CONFIG_SYS_MALLOC_BASE (CONFIG_SYS_MONITOR_BASE - CONFIG_SYS_MALLOC_LEN)
 #endif
-#ifndef CONFIG_SYS_GBL_DATA_ADDR
-# define CONFIG_SYS_GBL_DATA_ADDR (CONFIG_SYS_MALLOC_BASE - GENERATED_GBL_DATA_SIZE)
-#endif
-#ifndef CONFIG_SYS_BD_INFO_ADDR
-# define CONFIG_SYS_BD_INFO_ADDR (CONFIG_SYS_GBL_DATA_ADDR - GENERATED_BD_INFO_SIZE)
-#endif
 #ifndef CONFIG_STACKBASE
-# define CONFIG_STACKBASE (CONFIG_SYS_BD_INFO_ADDR - 4)
+# define CONFIG_STACKBASE (CONFIG_SYS_MALLOC_BASE - 4)
 #endif
 #ifndef CONFIG_SYS_MEMTEST_START
 # define CONFIG_SYS_MEMTEST_START 0

diff --git a/arch/blackfin/lib/board.c b/arch/blackfin/lib/board.c
index e3ee4cd353e364e0c8acbdda7889fb081c69c438..2d424a2da0b9029fe42576a354609beef6d14a3e 100644 (file)
--- a/arch/blackfin/lib/board.c
+++ b/arch/blackfin/lib/board.c
@@ -181,6 +181,46 @@ void init_cplbtables(void)
        }
 }
 
+static int global_board_data_init(void)
+{
+#ifndef CONFIG_SYS_GBL_DATA_ADDR
+# define CONFIG_SYS_GBL_DATA_ADDR 0
+#endif
+#ifndef CONFIG_SYS_BD_INFO_ADDR
+# define CONFIG_SYS_BD_INFO_ADDR 0
+#endif
+
+       bd_t *bd;
+
+       if (CONFIG_SYS_GBL_DATA_ADDR) {
+               gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR);
+               memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
+       } else {
+               static gd_t _bfin_gd;
+               gd = &_bfin_gd;
+       }
+
+       if (CONFIG_SYS_BD_INFO_ADDR) {
+               bd = (bd_t *) (CONFIG_SYS_BD_INFO_ADDR);
+               memset(bd, 0, GENERATED_BD_INFO_SIZE);
+       } else {
+               static bd_t _bfin_bd;
+               bd = &_bfin_bd;
+       }
+       gd->bd = bd;
+
+       bd->bi_r_version = version_string;
+       bd->bi_cpu = MK_STR(CONFIG_BFIN_CPU);
+       bd->bi_board_name = BFIN_BOARD_NAME;
+       bd->bi_vco = get_vco();
+       bd->bi_cclk = get_cclk();
+       bd->bi_sclk = get_sclk();
+       bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
+       bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
+
+       return 0;
+}
+
 /*
  * All attempts to come up with a "common" initialization sequence
  * that works for all boards and architectures failed: some of the
@@ -201,7 +241,6 @@ extern int timer_init(void);
 
 void board_init_f(ulong bootflag)
 {
-       bd_t *bd;
        char buf[32];
 
 #ifdef CONFIG_BOARD_EARLY_INIT_F
@@ -234,21 +273,8 @@ void board_init_f(ulong bootflag)
                hang();
 #endif
        serial_early_puts("Init global data\n");
-       gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR);
-       memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
-
-       bd = (bd_t *) (CONFIG_SYS_BD_INFO_ADDR);
-       gd->bd = bd;
-       memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
 
-       bd->bi_r_version = version_string;
-       bd->bi_cpu = MK_STR(CONFIG_BFIN_CPU);
-       bd->bi_board_name = BFIN_BOARD_NAME;
-       bd->bi_vco = get_vco();
-       bd->bi_cclk = get_cclk();
-       bd->bi_sclk = get_sclk();
-       bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
-       bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
+       global_board_data_init();
 
        /* Initialize */
        serial_early_puts("IRQ init\n");
@@ -276,7 +302,7 @@ void board_init_f(ulong bootflag)
 
        if (CONFIG_MEM_SIZE) {
                printf("RAM:   ");
-               print_size(bd->bi_memsize, "\n");
+               print_size(gd->bd->bi_memsize, "\n");
        }
 
 #if defined(CONFIG_POST)