Re: Loading Barebox to RAM

[Oleksij Rempel]

Hi,

Am 02.03.19 um 13:49 schrieb Patrick Schneider:
> Hey guys,
> I have a question about a way of "emergency flashing" the device.
> So I have a fully operational linux system with barebox as bootloader. In 
> production environment I have no access to the serial console but I have a 
> USB OTG port.
> For security reasons I don't want USB active in my "normal" barebox 
> environment, so it's off by config.
> For support, to gain access to a barebox and bootloader functionality is 
> there a way to load another barebox (with usb active) from linux userspace 
> into RAM and start/reboot into that?
> Have a nice weekend!

Let me rephrase: you disabled every thing in a bootloader which can be
accessed only locally and provided functional to nuke complete system
from linux which can be accessed locally and remotely?
I assume, it would make sense to review the thread model of this project.

Any way. "is it possible to run barebox from linux", the answer would
be: theoretically it should be possible to do it from kexec. I never
tried it before.
-- 
Regards,
Oleksij

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Loading Barebox to RAM

[Patrick Schneider]

Hey guys,
I have a question about a way of "emergency flashing" the device.
So I have a fully operational linux system with barebox as bootloader. In 
production environment I have no access to the serial console but I have a USB 
OTG port.
For security reasons I don't want USB active in my "normal" barebox 
environment, so it's off by config.
For support, to gain access to a barebox and bootloader functionality is there 
a way to load another barebox (with usb active) from linux userspace into RAM 
and start/reboot into that?
Have a nice weekend!
Regards,
Patrick

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[PATCH] i.MX habv3: add missing includes and make locally used function static

[Michael Olbrich]

Without this building fails with:

drivers/hab/habv3.c:80:12: error: static declaration of 'imx25_hab_get_status' 
follows non-static declaration
In file included from drivers/hab/habv3.c:14:
include/hab.h:39:5: note: previous declaration of 'imx25_hab_get_status' was 
here
drivers/hab/habv3.c:87:1: warning: data definition has no type or storage class
drivers/hab/habv3.c:87:1: warning: type defaults to 'int' in declaration of 
'postmmu_initcall' [-Wimplicit-int]
drivers/hab/habv3.c:87:1: warning: parameter names (without types) in function 
declaration
drivers/hab/habv3.c:80:12: warning: 'imx25_hab_get_status' defined but not used 
[-Wunused-function]

Signed-off-by: Michael Olbrich 
---
 drivers/hab/habv3.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hab/habv3.c b/drivers/hab/habv3.c
index 47d3caf864ec..f3f94bc44c8c 100644
--- a/drivers/hab/habv3.c
+++ b/drivers/hab/habv3.c
@@ -10,9 +10,11 @@
  */
 #define pr_fmt(fmt) "HABv3: " fmt
 
+#include 
 #include 
 #include 
 #include 
+#include 
 
 struct hab_status {
u8 value;
@@ -55,7 +57,7 @@ static struct hab_status hab_status[] = {
{ 0x8e, "algorithm type is either invalid or ortherwise unsupported" },
 };
 
-int imx_habv3_get_status(uint32_t status)
+static int imx_habv3_get_status(uint32_t status)
 {
int i;
 
-- 
2.20.1


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