6 May
2016
6 May
'16
11:27 p.m.
On 06/05/16 22:15, Steve Rae wrote:
Hi Andre,
On Wed, May 4, 2016 at 2:15 PM, Andre Przywara <andre.przywara@arm.com mailto:andre.przywara@arm.com> wrote:
The Allwinner provided boot0 boot loader requires a header before the U-Boot binary to both check its validity and to find other blobs to load. There is a tool called boot0img which fills the header appropriately. Reserve some space at the beginning of the binary to later hold the header if needed. Please note that the header is jumped over already by U-Boot anyway, so filling the header is optional and can be skipped if for instance boot0 is not used. Signed-off-by: Andre Przywara <andre.przywara@arm.com <mailto:andre.przywara@arm.com>> --- arch/arm/cpu/armv8/start.S | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S index deb44a8..b4c4867 100644 --- a/arch/arm/cpu/armv8/start.S +++ b/arch/arm/cpu/armv8/start.S @@ -21,6 +21,9 @@ _start: b reset +#ifdef CONFIG_ARCH_SUNXI + .space 0x5fc /* can be filled with a boot0 header if needed */ +#endifNAK ! this is NOT the _only_ board that would need this, so I propose:
Well, I was thinking about this as well, but wondered why nobody has ever come up with something like this before.
So I am happy indeed with a more generic solution.
#ifdef CONFIG_RESERVE_SPACE_BOOT0 .space CONFIG_RESERVE_SPACE_BOOT0 #endif
If you don't mind, I will put these three lines as your patch in a new post. Feel free to send it yourself if you prefer this. And it seems that boot0 is an Allwinner term, so maybe some more generic naming like CONFIG_RESERVED_HEADER_SPACE or the like?
Cheers, Andre.
Thanks, Steve
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