[PATCH v2 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 and modify
addresses to allow more space for the kernel.

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..7cdfc30649 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_KERNEL_ADDR	0x80080000
+#define VEXPRESS_FDT_ADDR	0x8fc00000
+#define VEXPRESS_BOOT_ADDR	0x8fd00000
+#define VEXPRESS_RAMDISK_ADDR	0x8fe00000
+
 #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