[PATCH 1/7] arm: juno: Fix Juno address variables

[Andre Przywara <andre.przywara@arm.com>]

The U-Boot documentation explains that variables ending with "_r" hold
addresses in DRAM, while those without that ending point to flash/ROM.
The default variables for the Juno board pointing to the kernel and DTB
load addresses were not complying with this scheme: they lack the
extension, but point to DRAM. This is particularly confusing since the
Juno board features parallel NOR flash, so there *is* a memory mapped
NOR address holding a DTB, for instance.

Fix the variables to use the proper names. On the way adjust the FDT
load address to be situated *before* the kernel, since users happened
to overwrite the DTB by the kernel clearing its .BSS section during
initialisation.

That fixes loading debug kernels, which happened to overwrite the DTB on
certain setups.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
---
 include/configs/vexpress_aemv8a.h | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/include/configs/vexpress_aemv8a.h b/include/configs/vexpress_aemv8a.h
index 9a9cec414c..edb08b0e68 100644
--- a/include/configs/vexpress_aemv8a.h
+++ b/include/configs/vexpress_aemv8a.h
@@ -138,35 +138,35 @@
 #define CONFIG_EXTRA_ENV_SETTINGS	\
 				"kernel_name=norkern\0"	\
 				"kernel_alt_name=Image\0"	\
-				"kernel_addr=0x80080000\0" \
+				"kernel_addr_r=0x80080000\0" \
 				"initrd_name=ramdisk.img\0"	\
-				"initrd_addr=0x84000000\0"	\
+				"initrd_addr_r=0x88000000\0"	\
 				"fdtfile=board.dtb\0" \
 				"fdt_alt_name=juno\0" \
-				"fdt_addr=0x83000000\0" \
+				"fdt_addr_r=0x80000000\0" \
 				"fdt_high=0xffffffffffffffff\0" \
 				"initrd_high=0xffffffffffffffff\0" \
 
 /* Copy the kernel and FDT to DRAM memory and boot */
-#define CONFIG_BOOTCOMMAND	"afs load ${kernel_name} ${kernel_addr} ; " \
+#define CONFIG_BOOTCOMMAND	"afs load ${kernel_name} ${kernel_addr_r} ;"\
 				"if test $? -eq 1; then "\
 				"  echo Loading ${kernel_alt_name} instead of "\
 				"${kernel_name}; "\
-				"  afs load ${kernel_alt_name} ${kernel_addr};"\
+				"  afs load ${kernel_alt_name} ${kernel_addr_r};"\
 				"fi ; "\
-				"afs load  ${fdtfile} ${fdt_addr} ; " \
+				"afs load ${fdtfile} ${fdt_addr_r} ;"\
 				"if test $? -eq 1; then "\
 				"  echo Loading ${fdt_alt_name} instead of "\
 				"${fdtfile}; "\
-				"  afs load ${fdt_alt_name} ${fdt_addr}; "\
+				"  afs load ${fdt_alt_name} ${fdt_addr_r}; "\
 				"fi ; "\
-				"fdt addr ${fdt_addr}; fdt resize; " \
-				"if afs load  ${initrd_name} ${initrd_addr} ; "\
+				"fdt addr ${fdt_addr_r}; fdt resize; " \
+				"if afs load  ${initrd_name} ${initrd_addr_r} ; "\
 				"then "\
-				"  setenv initrd_param ${initrd_addr}; "\
+				"  setenv initrd_param ${initrd_addr_r}; "\
 				"  else setenv initrd_param -; "\
 				"fi ; " \
-				"booti ${kernel_addr} ${initrd_param} ${fdt_addr}"
+				"booti ${kernel_addr_r} ${initrd_param} ${fdt_addr_r}"
 
 
 #elif CONFIG_TARGET_VEXPRESS64_BASE_FVP
-- 
2.14.5