[PATCH 3/5] vexpress64: Clean up BASE_FVP boot configuration

[Peter Hoyes]

From: Peter Hoyes <Peter.Hoyes at arm.com>

Move env var address values to #defines so they can be reused elsewhere.

Rename env var names to those recommended in the README.

Fix issue where fdt is called with invalid arguments when booting
without a ramdisk.

Signed-off-by: Peter Hoyes <Peter.Hoyes at arm.com>
---
 include/configs/vexpress_aemv8.h | 50 ++++++++++++++++++++------------
 1 file changed, 31 insertions(+), 19 deletions(-)

diff --git a/include/configs/vexpress_aemv8.h b/include/configs/vexpress_aemv8.h
index 49517a60b0..48c21082a6 100644
--- a/include/configs/vexpress_aemv8.h
+++ b/include/configs/vexpress_aemv8.h
@@ -7,6 +7,8 @@
 #ifndef __VEXPRESS_AEMV8_H
 #define __VEXPRESS_AEMV8_H
 
+#include <linux/stringify.h>
+
 #define CONFIG_REMAKE_ELF
 
 /* Link Definitions */
@@ -172,33 +174,43 @@
 				BOOTENV
 
 #elif CONFIG_TARGET_VEXPRESS64_BASE_FVP
+
+#define VEXPRESS_FDT_ADDR	0x83000000
+#define VEXPRESS_RAMDISK_ADDR	0x88000000
+#define VEXPRESS_KERNEL_ADDR	0x80080000
+#define VEXPRESS_BOOT_ADDR	0x8007f800
+
 #define CONFIG_EXTRA_ENV_SETTINGS	\
 				"kernel_name=Image\0"		\
-				"kernel_addr=0x80080000\0"	\
-				"initrd_name=ramdisk.img\0"	\
-				"initrd_addr=0x88000000\0"	\
-				"fdtfile=devtree.dtb\0"		\
-				"fdt_addr=0x83000000\0"		\
-				"boot_name=boot.img\0"		\
-				"boot_addr=0x8007f800\0"
+				"kernel_addr_r=" __stringify(VEXPRESS_KERNEL_ADDR) "\0"	\
+				"ramdisk_name=ramdisk.img\0"	\
+				"ramdisk_addr_r=" __stringify(VEXPRESS_RAMDISK_ADDR) "\0" \
+				"fdtfile=devtree.dtb\0"	\
+				"fdt_addr_r=" __stringify(VEXPRESS_FDT_ADDR) "\0"	\
+				"boot_name=boot.img\0" \
+				"boot_addr_r=" __stringify(VEXPRESS_BOOT_ADDR) "\0"
 
 #ifndef CONFIG_BOOTCOMMAND
-#define CONFIG_BOOTCOMMAND	"if smhload ${boot_name} ${boot_addr}; then " \
+#define CONFIG_BOOTCOMMAND	"if smhload ${boot_name} ${boot_addr_r}; then " \
 				"  set bootargs; " \
-				"  abootimg addr ${boot_addr}; " \
-				"  abootimg get dtb --index=0 fdt_addr; " \
-				"  bootm ${boot_addr} ${boot_addr} " \
-				"  ${fdt_addr}; " \
+				"  abootimg addr ${boot_addr_r}; " \
+				"  abootimg get dtb --index=0 fdt_addr_r; " \
+				"  bootm ${boot_addr_r} ${boot_addr_r} " \
+				"  ${fdt_addr_r}; " \
 				"else; " \
 				"  set fdt_high 0xffffffffffffffff; " \
 				"  set initrd_high 0xffffffffffffffff; " \
-				"  smhload ${kernel_name} ${kernel_addr}; " \
-				"  smhload ${fdtfile} ${fdt_addr}; " \
-				"  smhload ${initrd_name} ${initrd_addr} "\
-				"  initrd_end; " \
-				"  fdt addr ${fdt_addr}; fdt resize; " \
-				"  fdt chosen ${initrd_addr} ${initrd_end}; " \
-				"  booti $kernel_addr - $fdt_addr; " \
+				"  smhload ${kernel_name} ${kernel_addr_r}; " \
+				"  smhload ${fdtfile} ${fdt_addr_r}; " \
+				"  smhload ${ramdisk_name} ${ramdisk_addr_r} "\
+				"  ramdisk_end; " \
+				"  fdt addr ${fdt_addr_r}; fdt resize; " \
+				"  if test -n ${ramdisk_end}; then "\
+				"    fdt chosen ${ramdisk_addr_r} ${ramdisk_end}; " \
+				"  else; " \
+				"    fdt chosen; " \
+				"  fi; " \
+				"  booti $kernel_addr_r - $fdt_addr_r; " \
 				"fi"
 #endif
 
-- 
2.25.1