[U-Boot] [PATCH] ads5121: support for running from memory

[Nikita V. Youshchenko]

This version fixes pointed issues. Is it better?

commit 03f4cf26950e498d83c21fd040977db9633d77e2
Author: Nikita V. Youshchenko <yoush at debian.org>
Date:   Tue Sep 2 07:51:05 2008 +0400

    ads5121: support for running from RAM
    
    This patch makes it possible to start u-boot from RAM on ads5121 board.
    
    It does two simple things:
    - skips initialization of RAM controller if already running from RAM,
    - makes CONFIG_ENV_ADDR absolute, not relative to CFG_MONITOR_BASE
    
    Signed-off-by: Nikita V. Youshchenko <yoush at debian.org>

diff --git a/board/ads5121/ads5121.c b/board/ads5121/ads5121.c
index deaa292..644d85e 100644
--- a/board/ads5121/ads5121.c
+++ b/board/ads5121/ads5121.c
@@ -120,8 +120,9 @@ phys_size_t initdram (int board_type)
  */
 long int fixed_sdram (void)
 {
-	volatile immap_t *im = (immap_t *) CFG_IMMR;
 	u32 msize = CFG_DDR_SIZE * 1024 * 1024;
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	volatile immap_t *im = (immap_t *) CFG_IMMR;
 	u32 msize_log2 = __ilog2 (msize);
 	u32 i;
 
@@ -203,7 +204,7 @@ long int fixed_sdram (void)
 	/* Start MDDRC */
 	im->mddrc.ddr_time_config0 = CFG_MDDRC_TIME_CFG0_RUN;
 	im->mddrc.ddr_sys_config = CFG_MDDRC_SYS_CFG_RUN;
-
+#endif
 	return msize;
 }
 
diff --git a/include/configs/ads5121.h b/include/configs/ads5121.h
index d6f7e02..4086ce9 100644
--- a/include/configs/ads5121.h
+++ b/include/configs/ads5121.h
@@ -322,7 +322,7 @@
  */
 #define CONFIG_ENV_IS_IN_FLASH	1
 /* This has to be a multiple of the Flash sector size */
-#define CONFIG_ENV_ADDR		(CFG_MONITOR_BASE + CFG_MONITOR_LEN)
+#define CONFIG_ENV_ADDR		0xfff40000
 #define CONFIG_ENV_SIZE		0x2000
 #ifdef CONFIG_BKUP_FLASH
 #define CONFIG_ENV_SECT_SIZE	0x20000	/* one sector (256K) for env */
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