apritzel

#!/bin/sh

send() {
	read -d\# line
	echo "$1"
}

# kick u-boot to tickle the prompt and get the state machine going
echo "printenv bootcmd"
read line

apritzel

sunxi boot monitor v0.1
Allwinner A64 SoC detected.
Booted from FEL
128Mbit SPI flash detected.
(No SD card detection yet.)
(No eMMC detection yet).
Use "help" for a list of commands.

# help
help

apritzel

#!/bin/sh

grep -n '^ *'$'\t' "$1" && echo "^^^ tabs"
grep -n 'if(' "$1" && echo "^^^ no space after if"
grep -n 'if ([^ ]' "$1" && echo "^^^ no space after if ("
grep -n 'while(' "$1" && echo "^^^ no space after while"
grep -n 'while ([^ ]' "$1" && echo "^^^ no space after while ("
grep -n 'for(' "$1" && echo "^^^ no space after for"
grep -n 'for ([^ ]' "$1" && echo "^^^ no space after for ("
grep -n '[ ]*[^ ].*{$' "$1" && echo "^^^ opening bracket at the end of line"

apritzel

From 48be8001e507a0bd431b4f8186a95d11ddc6ee36 Mon Sep 17 00:00:00 2001
From: Andre Przywara <andre.przywara@arm.com>
Date: Wed, 23 Nov 2016 00:35:01 +0000
Subject: [PATCH] sunxi: add SPL FEL button

Some of the newer Allwinner boards that come with SPI flash soldered
are missing an easy way to trigger the USB-OTG FEL boot mode.
On most boards without eMMC FEL mode is entered when there is no SD card
found, boards with eMMC typically feature a hardware FEL button.
Now some boards like newer boards from OrangePi have no eMMC, but have a SPI

apritzel

##############################
# test output mainline kernel
##############################
$ ./test_timer 
TAP version 13
# number of cores: 4
ok 1 same timer frequency on all cores
# timer frequency is 24000000 Hz (24 MHz)
# time1: eb447fff, time2: eb444000, diff: -16383
# time1: eb44efff, time2: eb44e800, diff: -2047

apritzel

HELLO! BOOT0 is starting!
boot0 commit : 045061a8bb2580cb3fa02e301f52a015040c158f
 
boot0 version : 4.0.0
set pll start
set pll end
rtc[0] value = 0x00000000
rtc[1] value = 0x00000000
rtc[2] value = 0x00000000
rtc[3] value = 0x00000000

apritzel

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 80b0a49..0a7865a 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -54,28 +54,28 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		cpu@0 {
+		cpu0: cpu@0 {

apritzel

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2018 Amarula Solutions.
 * Author: Jagan Teki <jagan@amarulasolutions.com>
 */

#include <common.h>
#include <clk-uclass.h>
#include <dm.h>
#include <errno.h>

apritzel

U-Boot SPL 2016.11-rc3-00019-g5c2dad5-dirty (Nov 11 2016 - 01:27:06)
DRAM:DRAM BOOT DRIVE INFO: V0.6
the chip id is 0x1
the chip id is 0x1
the chip id is 0x1
the chip id is 0x1
the chip id is 0x1
DRAM CLK =672 MHZ
DRAM Type =3 (2:DDR2,3:DDR3,6:LPDDR2,7:LPDDR3)
DRAM zq value: 0x3b3bf9

apritzel

Rebuilding the firmware image

The Pine64 firmware consists of four parts:

• The on-chip boot ROM (BROM), which cannot be changed and does the very first steps in loading code. It is part of the A64 SoC and thus not included here.
• A secondary program loader (SPL): Its main task is to initialize the DRAM and load the remaining firmware parts. Due to BROM limitations the SPL is limited in size to 32K. The SPL can be a part of U-Boot, but at the moment we lack free source for the DRAM initialization. The alternative is to use Allwinner's boot0, which is a closed source, but redistributable blob serving the same purpose.
• An EL3 runtime firmware. The task of this code is to provide runtime services like PSCI. It stays resident during the whole time and can be called from an OS like Linux to enable or disable secondary cores or request other services. It also takes care of low level CPU initialization and some errata handling. We use a version of ARM Trusted Firmware, based on the official 1.0 release from