From 34fc2a6edfeb5d28244bf4a36615d1fe984a7921 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sun, 15 Apr 2018 13:15:33 +0200 Subject: [PATCH] ARM: socfpga: Add boot trampoline for Arria10 The Arria10 uses slightly different boot image header than the Gen5 SoCs, in particular the header itself contains an offset from the start of the header to which the Arria10 jumps. This offset must not be negative, yet the header is placed at offset 0x40 of the bootable binary. Therefore, to jump into U-Boot, add a trampoline just past the Arria10 boot header and point to this trampoline at fixed offset from the header generated using the mkimage -T socfpgaimage_v1 . Note that it is not needed to jump back to offset 0x0 of the image, it is possible to jump directly at the reset label and save processing two instructions. Signed-off-by: Marek Vasut Cc: Dinh Nguyen Cc: Chin Liang See --- arch/arm/mach-socfpga/include/mach/boot0.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-socfpga/include/mach/boot0.h b/arch/arm/mach-socfpga/include/mach/boot0.h index 6019423..c78def5 100644 --- a/arch/arm/mach-socfpga/include/mach/boot0.h +++ b/arch/arm/mach-socfpga/include/mach/boot0.h @@ -17,8 +17,8 @@ _start: .word 0xcafec0d3; /* Checksum, zero-pad */ nop; - b reset; /* SoCFPGA jumps here */ - nop; + b reset; /* SoCFPGA Gen5 jumps here */ + b reset; /* SoCFPGA Gen10 trampoline */ nop; nop; #endif -- 2.7.4