On Tue, Nov 29, 2011 at 03:11:11PM +0000, Pawel Moll wrote:
> This patch provides hooks for DT-based tile machine implementations
> and adds Device Tree description for the motherboard.
[...]
> +config ARCH_VEXPRESS_DT
> + bool
> + select OF
> + help
> + VE platform *requiring* Flattened Device Tree to boot.
> +
Now that a person may fail to boot on a supported board simply due to
failing to supply a device tree, it may be a good idea to have a more
helpful panic message for that situation, perhaps something like the
following.
If you don't think this fits in this series, I can always follow up
later.
Cheers
---Dave
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 6965f64..9dda482 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -434,8 +434,11 @@ static void __init v2m_populate_ct_desc(void)
ct_desc = ct_descs[i];
if (!ct_desc)
- panic("vexpress: failed to populate core tile description "
- "for tile ID 0x%8x\n", current_tile_id);
+ panic("vexpress: this kernel does not support core tile ID "
+ "0x%08x when booting via ATAGs.\n"
+ "You may need a device tree blob or a different kernel "
+ "to boot on this board.\n",
+ current_tile_id);
}
static void __init v2m_map_io(void)
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