Commit graph

14 commits

Author SHA1 Message Date
Siarhei Siamashka
77ef136950 sunxi: Machine id hack to prevent loading buggy sunxi-3.4 kernels
Right now U-Boot supports the CONFIG_OLD_SUNXI_KERNEL_COMPAT option,
which makes it go out of its way in limiting the selection of PLL clock
frequencies and PMIC voltages in order not to upset outdated buggy
sunxi-3.4 kernel releases. And if the CONFIG_OLD_SUNXI_KERNEL_COMPAT
option is not set, then booting such old kernels exhibits various
failures at runtime. This is very user unfriendly, and there were
already several incidents when people wasted their time being hit
by these runtime failures and trying to debug them.

The right solution is not to add hacks and workarounds to the mainline
U-Boot, but to fix these bugs in the sunxi-3.4 kernel. And in fact,
the updated sunxi-3.4 kernels already exist. Still we need to follow
the 'Principle of Least Surprise' and U-Boot needs to ensure that
the old buggy kernels are not getting happily booted when the
CONFIG_OLD_SUNXI_KERNEL_COMPAT option is not set. And this patch
addresses this particular issue.

This patch makes U-Boot store the 'compatibility revision' number in
the top 4 bits of the machine id and pass it to the kernel. The old
buggy kernels will fail to load with a very much googlable error
message on the serial console (the "r1 = 0x100010bb" part of it):

  "Error: unrecognized/unsupported machine ID (r1 = 0x100010bb)"

This error message can be documented in the linux-sunxi wiki with
proper explanations about how to resolve this situation and where
to get the necessary bugfixes for the sunxi-3.4 kernel.

The fixed sunxi-3.4 kernels implement a revision compatibility check
and clear the top 4 bits of the machine id if everything is alright.
By accepting the machine id with the bits 31:28 set to 1, the sunxi-3.4
kernel effectively certifies that it has the PLL5 clock speed and
AXP209 DCDC3 voltage fixes applied.

It is still possible to set the CONFIG_OLD_SUNXI_KERNEL_COMPAT option
in U-Boot if the user desires to use an outdated unpatched sunxi-3.4
kernel.

Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-02-21 16:54:29 +01:00
Ian Campbell
4e7c892d15 sunxi: Use a common CONFIG_SYS_PROMPT
The CPU info is already logged during boot e.g.
   CPU:    Allwinner A20 (SUN7I)
so the prompt is just one more thing to change for each new SoC, just makes it
"sunxi#" instead.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2015-01-23 15:15:51 +01:00
Xiubo Li
d0419f400a ARM: HYP/non-sec: Fix the ARCH Timer frequency setting for sun7i
Earlier commit 73a1cb27 mistakenly used CONFIG_SYS_TIMER_CLK_FREQ.
It should be CONFIG_TIMER_CLK_FREQ.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
[York Sun: This is the difference between two patch versions]
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-11 12:37:42 -08:00
Xiubo Li
73a1cb27c0 ARM: HYP/non-sec: Fix the ARCH Timer frequency setting.
For some SoCs, the system clock frequency may not equal to the
ARCH Timer's frequency.

This patch uses the CONFIG_TIMER_CLK_FREQ instead of
CONFIG_SYS_CLK_FREQ, then the system clock macro and arch timer
macor could be set separately and without interfering each other.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-12-11 09:41:45 -08:00
Hans de Goede
8a1424506d sun7i: Drop CONFIG_ARMV7_PSCI_NR_CPUS
It is not used anywhere.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-11-25 13:38:46 +01:00
Hans de Goede
ea624e1951 ARM: Add arch/arm/cpu/armv7/Kconfig with non-secure and virt options
Add arch/arm/cpu/armv7/Kconfig with non-secure and virt options, this is a
preparation patch for adding an env variable to choose between secure /
non-secure boot on non-secure boot capable systems, specifically this
prepares for adding CONFIG_ARMV7_BOOT_SEC_DEFAULT as a proper Kconfig option.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2014-11-24 09:09:49 +01:00
Hans de Goede
115200ceb0 sunxi: ehci: Add proper Kconfig options to select the usb Vbus gpio-s
Add proper Kconfig options to select the usb Vbus gpio-s, besides moving to
Kconfig being the right thing to do, an added advantage of this is that it
allows for boards without Vbus gpio-s.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-11-13 14:49:02 +01:00
Ian Campbell
ed41e62f51 sunxi: Use CONFIG_MACH_SUN?I from Kconfig instead of CONFIG_SUN?I
Mostly automatic with:
    sed -i -e 's/CONFIG_\(SUN[45678]I\)/CONFIG_MACH_\1/g' $(git grep -l CONFIG_SUN[45678]I)
followed by removing the relevant #defines from include/configs/sun?i.h by
hand.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2014-11-05 13:09:58 +01:00
Hans de Goede
e711891685 sunxi: Add CONFIG_MACH_TYPE defines to sun4i, sun5i and sun7i
Many people are still using old linux-sunxi-3.4 kernels on sunxi devices,
adding the proper MACH_TYPE defines for this allows people to switch to
upstream u-boot, so that we can stop maintaining the linux-sunxi u-boot fork.

These machine-ids are all properly registered at:

http://www.arm.linux.org.uk/developer/machines/

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-10-24 09:35:38 +02:00
Marc Zyngier
cb4ccf2f21 sunxi: HYP/non-sec: configure CNTFRQ on all CPUs
CNTFRQ needs to be properly configured on all CPUs. Otherwise,
virtual machines hoping to find valuable information on secondary
CPUs will be disapointed...

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2014-07-31 15:37:24 +02:00
Marc Zyngier
d5db7024aa sunxi: HYP/non-sec: add sun7i PSCI backend
So far, only supporting the CPU_ON method.
Other functions can be added later.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2014-07-31 15:37:24 +02:00
Roman Byshko
263b012c25 sun7i: add USB EHCI settings
Specific USB EHCI settings to be set for sun7i if
CONFIG_USB_EHCI is enabled.

Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
[hdegoede@redhat.com: Use SUNXI_GPH macro for SUNXI_USB_VBUS#_GPIO]
[hdegoede@redhat.com: Add #ifndef SUNXI_USB_VBUS#_GPIO to allow override of
 the default pins from boards.cfg]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2014-07-31 15:37:23 +02:00
Henrik Nordstrom
14bc66bd9a sunxi: Add axp209 pmic support
Add support for the x-powers axp209 pmic which is found on most A10, A13 and
A20 boards.

And enable AXP209 support for the Cubietruck and Cubieboard boards.

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
2014-07-18 19:42:10 +01:00
Ian Campbell
cba69eeeaa sunxi: add sun7i cpu, board and start of day support
This patch adds generic board, start of day and basic build system support for
the Allwinner A20 (sun7i) processor. This code will not been compiled until the
build is hooked up in a later patch. It has been split out to keep the patches
manageable.

Signed-off-by: Adam Sampson <ats@offog.org>
Signed-off-by: Aleksei Mamlin <mamlinav@gmail.com>
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Jens Kuske <jenskuske@gmail.com>
Signed-off-by: Luc Verhaegen <libv@skynet.be>
Signed-off-by: Luke Leighton <lkcl@lkcl.net>
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Patrick Wood <patrickhwood@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Wills Wang <wills.wang.open@gmail.com>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Tom Cubie <Mr.hipboi@gmail.com>
Reviewed-by: Tom Rini <trini@ti.com>
2014-05-25 16:12:40 +02:00