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

[Nikita V. Youshchenko]

> Could you rebase it against current HEAD?

Sure. Here it is.

From ba2fc48842d6f866e30f52f457a4c834431e1167 Mon Sep 17 00:00:00 2001
From: Nikita V. Youshchenko <yoush at debian.org>
Date: Tue, 2 Sep 2008 07:51:05 +0400
Subject: [PATCH] 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>
---
 board/ads5121/ads5121.c   |    5 +++--
 include/configs/ads5121.h |    2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/board/ads5121/ads5121.c b/board/ads5121/ads5121.c
index 0610928..bb1bf2d 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 *) CONFIG_SYS_IMMR;
 	u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
 	u32 msize_log2 = __ilog2 (msize);
 	u32 i;
 
@@ -203,7 +204,7 @@ long int fixed_sdram (void)
 	/* Start MDDRC */
 	im->mddrc.ddr_time_config0 = CONFIG_SYS_MDDRC_TIME_CFG0_RUN;
 	im->mddrc.ddr_sys_config = CONFIG_SYS_MDDRC_SYS_CFG_RUN;
-
+#endif
 	return msize;
 }
 
diff --git a/include/configs/ads5121.h b/include/configs/ads5121.h
index bb3525f..7a5cdf0 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		(CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_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 */
-- 
1.5.6.5

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