Re: [PATCH 3/6] ARM: mvebu: introduce multi image support

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On 08/13/13 16:15, Sascha Hauer wrote:
On Tue, Aug 13, 2013 at 03:30:38PM +0200, Sebastian Hesselbarth wrote:
On 08/13/13 09:26, Sascha Hauer wrote:
diff --git a/arch/arm/boards/solidrun-cubox/lowlevel.c b/arch/arm/boards/solidrun-cubox/lowlevel.c
new file mode 100644
index 0000000..fdf5a7e
--- /dev/null
+++ b/arch/arm/boards/solidrun-cubox/lowlevel.c
@@ -0,0 +1,37 @@
[...]
+ENTRY_FUNCTION(start_solidrun_cubox)(void)
+{
+	uint32_t fdt;
+
+	__barebox_arm_head();
+
+	arm_cpu_lowlevel_init();
+
+	fdt = (uint32_t)__dtb_dove_cubox_start - get_runtime_offset();
+
+	mvebu_barebox_entry(fdt);
+}
[...]
diff --git a/arch/arm/mach-mvebu/lowlevel.c
b/arch/arm/mach-mvebu/lowlevel.c
index 3f64c4a..11810cc 100644
--- a/arch/arm/mach-mvebu/lowlevel.c
+++ b/arch/arm/mach-mvebu/lowlevel.c
@@ -24,5 +24,5 @@
   void __naked barebox_arm_reset_vector(void)
   {
   	arm_cpu_lowlevel_init();
-	mvebu_barebox_entry();
+	mvebu_barebox_entry(0);
   }

Sascha,

thanks for the patch set, I'll give it a go soon.

I understand that this is just a first step, but you are adding extra
lowlevel init to boards/solidrun-cubox/lowlevel.c but in the end it
should be part of mach-mvebu/lowlevel.c instead?

I have a some MVEBU boards with Dove and Armada 370 available and
could extend the patches to have a single lowlevel init again.

The board specific lowlevel init is necessary since this specifies the
dtb to use. Otherwise there's no way to find out on which board you are
running on.

Ok, but I could try to cook the board lowlevel init down to its bare
minimum and only set fdt address. Or have some mvebu specific
fdt_address variable that can be overwritten. The less board specific
stuff there is, the better.

Sebastian


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