[U-Boot] [PATCH 7/9] mpc86xx: Change early FLASH mapping to 1M at CONFIG_MONITOR_BASE_EARLY

[Becky Bruce]

We define CONFIG_MONITOR_BASE_EARLY to define the initial location
of the bootpage in flash.   Use this to create an early mapping
definition for the FLASH, and change the early_bats code to use this.

This  change facilitates the relocation of the flash since the early
mappings are no longer tied to the final location of the flash.

Signed-off-by: Becky Bruce <becky.bruce at freescale.com>
---
 cpu/mpc86xx/start.S           |   20 ++++++++++----------
 include/configs/MPC8610HPCD.h |    9 +++++++++
 include/configs/MPC8641HPCN.h |   12 +++++++++++-
 include/configs/sbc8641d.h    |    9 +++++++++
 4 files changed, 39 insertions(+), 11 deletions(-)

diff --git a/cpu/mpc86xx/start.S b/cpu/mpc86xx/start.S
index 7e36801..60af3dd 100644
--- a/cpu/mpc86xx/start.S
+++ b/cpu/mpc86xx/start.S
@@ -217,8 +217,8 @@ boot_warm:
 	/*
 	 * Calculate absolute address in FLASH and jump there
 	 *------------------------------------------------------*/
-	lis	r3, CONFIG_SYS_MONITOR_BASE at h
-	ori	r3, r3, CONFIG_SYS_MONITOR_BASE at l
+	lis	r3, CONFIG_SYS_MONITOR_BASE_EARLY at h
+	ori	r3, r3, CONFIG_SYS_MONITOR_BASE_EARLY at l
 	addi	r3, r3, in_flash - _start + EXC_OFF_SYS_RESET
 	mtlr	r3
 	blr
@@ -398,19 +398,19 @@ early_bats:
 	isync
 
 	/* IBAT 6 */
-	lis	r4, CONFIG_SYS_IBAT6L at h
-	ori     r4, r4, CONFIG_SYS_IBAT6L at l
-	lis	r3, CONFIG_SYS_IBAT6U at h
-	ori     r3, r3, CONFIG_SYS_IBAT6U at l
+	lis	r4, CONFIG_SYS_IBAT6L_EARLY at h
+	ori     r4, r4, CONFIG_SYS_IBAT6L_EARLY at l
+	lis	r3, CONFIG_SYS_IBAT6U_EARLY at h
+	ori     r3, r3, CONFIG_SYS_IBAT6U_EARLY at l
 	mtspr   IBAT6L, r4
 	mtspr   IBAT6U, r3
 	isync
 
 	/* DBAT 6 */
-	lis	r4, CONFIG_SYS_DBAT6L at h
-	ori     r4, r4, CONFIG_SYS_DBAT6L at l
-	lis	r3, CONFIG_SYS_DBAT6U at h
-	ori     r3, r3, CONFIG_SYS_DBAT6U at l
+	lis	r4, CONFIG_SYS_DBAT6L_EARLY at h
+	ori     r4, r4, CONFIG_SYS_DBAT6L_EARLY at l
+	lis	r3, CONFIG_SYS_DBAT6U_EARLY at h
+	ori     r3, r3, CONFIG_SYS_DBAT6U_EARLY at l
 	mtspr   DBAT6L, r4
 	mtspr   DBAT6U, r3
 	isync
diff --git a/include/configs/MPC8610HPCD.h b/include/configs/MPC8610HPCD.h
index 4486763..f2fe4a6 100644
--- a/include/configs/MPC8610HPCD.h
+++ b/include/configs/MPC8610HPCD.h
@@ -187,6 +187,7 @@
 #define CONFIG_SYS_FLASH_ERASE_TOUT	60000	/* Flash Erase Timeout (ms) */
 #define CONFIG_SYS_FLASH_WRITE_TOUT	500	/* Flash Write Timeout (ms) */
 #define CONFIG_SYS_MONITOR_BASE	TEXT_BASE	/* start of monitor */
+#define CONFIG_SYS_MONITOR_BASE_EARLY   0xfff00000	/* early monitor loc */
 
 #define CONFIG_FLASH_CFI_DRIVER
 #define CONFIG_SYS_FLASH_CFI
@@ -419,6 +420,14 @@
 #define CONFIG_SYS_IBAT6L	(CONFIG_SYS_FLASH_BASE | BATL_PP_RW | BATL_MEMCOHERENCE)
 #define CONFIG_SYS_IBAT6U	CONFIG_SYS_DBAT6U
 
+/* Map the last 1M of flash where we're running from reset */
+#define CONFIG_SYS_DBAT6L_EARLY	(CONFIG_SYS_MONITOR_BASE_EARLY | BATL_PP_RW \
+				 | BATL_CACHEINHIBIT | BATL_GUARDEDSTORAGE)
+#define CONFIG_SYS_DBAT6U_EARLY	(TEXT_BASE | BATU_BL_1M | BATU_VS | BATU_VP)
+#define CONFIG_SYS_IBAT6L_EARLY	(CONFIG_SYS_MONITOR_BASE_EARLY | BATL_PP_RW \
+				 | BATL_MEMCOHERENCE)
+#define CONFIG_SYS_IBAT6U_EARLY	CONFIG_SYS_DBAT6U_EARLY
+
 /*
  * BAT7		4M	Cache-inhibited, guarded
  * 0xe800_0000	4M	PIXIS
diff --git a/include/configs/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h
index 0a6d5f9..4925057 100644
--- a/include/configs/MPC8641HPCN.h
+++ b/include/configs/MPC8641HPCN.h
@@ -206,7 +206,8 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
 #undef	CONFIG_SYS_FLASH_CHECKSUM
 #define CONFIG_SYS_FLASH_ERASE_TOUT	60000	/* Flash Erase Timeout (ms) */
 #define CONFIG_SYS_FLASH_WRITE_TOUT	500	/* Flash Write Timeout (ms) */
-#define CONFIG_SYS_MONITOR_BASE	TEXT_BASE	/* start of monitor */
+#define CONFIG_SYS_MONITOR_BASE		TEXT_BASE	/* start of monitor */
+#define CONFIG_SYS_MONITOR_BASE_EARLY   0xfff00000	/* early monitor loc */
 
 #define CONFIG_FLASH_CFI_DRIVER
 #define CONFIG_SYS_FLASH_CFI
@@ -497,6 +498,15 @@ extern unsigned long get_board_sys_clk(unsigned long dummy);
 				 | BATL_MEMCOHERENCE)
 #define CONFIG_SYS_IBAT6U	CONFIG_SYS_DBAT6U
 
+/* Map the last 1M of flash where we're running from reset */
+#define CONFIG_SYS_DBAT6L_EARLY	(CONFIG_SYS_MONITOR_BASE_EARLY | BATL_PP_RW \
+				 | BATL_CACHEINHIBIT | BATL_GUARDEDSTORAGE)
+#define CONFIG_SYS_DBAT6U_EARLY	(TEXT_BASE | BATU_BL_1M | BATU_VS | BATU_VP)
+#define CONFIG_SYS_IBAT6L_EARLY	(CONFIG_SYS_MONITOR_BASE_EARLY | BATL_PP_RW \
+				 | BATL_MEMCOHERENCE)
+#define CONFIG_SYS_IBAT6U_EARLY	CONFIG_SYS_DBAT6U_EARLY
+
+/* Leave BAT7 free here - it is used for various things later */
 #define CONFIG_SYS_DBAT7L 0x00000000
 #define CONFIG_SYS_DBAT7U 0x00000000
 #define CONFIG_SYS_IBAT7L 0x00000000
diff --git a/include/configs/sbc8641d.h b/include/configs/sbc8641d.h
index e8216ea..45d8179 100644
--- a/include/configs/sbc8641d.h
+++ b/include/configs/sbc8641d.h
@@ -231,6 +231,7 @@
 #define CONFIG_SYS_FLASH_ERASE_TOUT	60000	/* Flash Erase Timeout (ms) */
 #define CONFIG_SYS_FLASH_WRITE_TOUT	500	/* Flash Write Timeout (ms) */
 #define CONFIG_SYS_MONITOR_BASE	TEXT_BASE	/* start of monitor */
+#define CONFIG_SYS_MONITOR_BASE_EARLY   0xfff00000	/* early monitor loc */
 
 #define CONFIG_FLASH_CFI_DRIVER
 #define CONFIG_SYS_FLASH_CFI
@@ -463,6 +464,14 @@
 #define CONFIG_SYS_IBAT6L	((CONFIG_SYS_FLASH_BASE & 0xfe000000) | BATL_PP_RW | BATL_MEMCOHERENCE)
 #define CONFIG_SYS_IBAT6U	CONFIG_SYS_DBAT6U
 
+/* Map the last 1M of flash where we're running from reset */
+#define CONFIG_SYS_DBAT6L_EARLY	(CONFIG_SYS_MONITOR_BASE_EARLY | BATL_PP_RW \
+				 | BATL_CACHEINHIBIT | BATL_GUARDEDSTORAGE)
+#define CONFIG_SYS_DBAT6U_EARLY	(TEXT_BASE | BATU_BL_1M | BATU_VS | BATU_VP)
+#define CONFIG_SYS_IBAT6L_EARLY	(CONFIG_SYS_MONITOR_BASE_EARLY | BATL_PP_RW \
+				 | BATL_MEMCOHERENCE)
+#define CONFIG_SYS_IBAT6U_EARLY	CONFIG_SYS_DBAT6U_EARLY
+
 #define CONFIG_SYS_DBAT7L	0x00000000
 #define CONFIG_SYS_DBAT7U	0x00000000
 #define CONFIG_SYS_IBAT7L	0x00000000
-- 
1.5.5.1