Hi,
I was trying to figure out the state framework recently , and found out
that till version 2017.04.0 it kinda works with the following lines in
my dtb :
#############################################################################
/ {
state: state {
magic = <0x27031977>;
compatible = "barebox,state";
backend-type = "dtb";
backend-storage-type = "direct";
backend-stridesize = <0x500>;
backend = &mmc1, "partname:6";
bootchooser {
system0 {
boot {
reg = <0x00 0x10>;
type = "string";
default = "system0";
};
remaining_attempts {
reg = <0x15 0x4>;
type = "uint32";
default = <0x3>;
};
priority {
reg = <0x20 0x4>;
type = "uint32";
default = <0x15>;
};
};
system1 {
boot {
reg = <0x25 0x10>;
type = "string";
default = "system1";
};
remaining_attempts {
reg = <0x40 0x4>;
type = "uint32";
default = <0x3>;
};
priority {
reg = <0x45 0x4>;
type = "uint32";
default = <0x14>;
};
};
};
};
};
#############################################################################
The problem was it just worked for the first boot , after that it goes
through a boot loop and all the remaining_attempts become zero , and I
see the following bizarre logs on the console :
#############################################################################
state: set parameter bootchooser.last_chosen: Invalid argument
unable to handle paging request at address 0x14040008
pc : [<9fe05314>] lr : [<9fe05363>]
sp : 9ffefab8 ip : 0000000c fp : 9fe56ad5
r10: 9fea17c8 r9 : 9fe56f8a r8 : 9fe56f71
r7 : 9011852c r6 : 8fefef40 r5 : 14040000 r4 : edfe0dd0
r3 : 00000000 r2 : 00000004 r1 : 90119214 r0 : 8fefef40
Flags: nzCv IRQs off FIQs on Mode SVC_32
[<9fe05314>] (remove_free_block+0x10/0x3e) from [<9fe05363>] (block_remove+0x21/0x24)
[<9fe05363>] (block_remove+0x21/0x24) from [<9fe05667>] (tlsf_free+0x37/0x62)
[<9fe05667>] (tlsf_free+0x37/0x62) from [<9fe08875>] (state_save+0x5d/0x6c)
[<9fe08875>] (state_save+0x5d/0x6c) from [<9fe09c6b>] (bootchooser_save+0x33/0xa0)
[<9fe09c6b>] (bootchooser_save+0x33/0xa0) from [<9fe09e3b>] (bootchooser_get_target+0x5f/0x7c)
[<9fe09e3b>] (bootchooser_get_target+0x5f/0x7c) from [<9fe09e7b>] (bootchooser_boot+0x23/0xbc)
[<9fe09e7b>] (bootchooser_boot+0x23/0xbc) from [<9fe0ba33>] (boot_entry+0x37/0x60)
[<9fe0ba33>] (boot_entry+0x37/0x60) from [<9fe36a1f>] (do_boot+0x137/0x160)
[<9fe36a1f>] (do_boot+0x137/0x160) from [<9fe02f25>] (execute_command+0x21/0x48)
[<9fe02f25>] (execute_command+0x21/0x48) from [<9fe076d3>] (run_list_real+0x5a3/0x604)
[<9fe076d3>] (run_list_real+0x5a3/0x604) from [<9fe073c7>] (run_list_real+0x297/0x604)
[<9fe073c7>] (run_list_real+0x297/0x604) from [<9fe07035>] (parse_stream_outer+0x105/0x15c)
[<9fe07035>] (parse_stream_outer+0x105/0x15c) from [<9fe070f1>] (parse_string_outer+0x65/0xa4)
[<9fe070f1>] (parse_string_outer+0x65/0xa4) from [<9fe07777>] (source_script+0x43/0x68)
[<9fe07777>] (source_script+0x43/0x68) from [<9fe077c3>] (do_source+0x27/0x46)
[<9fe077c3>] (do_source+0x27/0x46) from [<9fe02f25>] (execute_command+0x21/0x48)
[<9fe02f25>] (execute_command+0x21/0x48) from [<9fe076d3>] (run_list_real+0x5a3/0x604)
[<9fe076d3>] (run_list_real+0x5a3/0x604) from [<9fe07035>] (parse_stream_outer+0x105/0x15c)
[<9fe07035>] (parse_stream_outer+0x105/0x15c) from [<9fe070f1>] (parse_string_outer+0x65/0xa4)
[<9fe070f1>] (parse_string_outer+0x65/0xa4) from [<9fe078b5>] (run_command+0x21/0x30)
[<9fe078b5>] (run_command+0x21/0x30) from [<9fe0094d>] (start_barebox+0x2d/0x94)
[<9fe0094d>] (start_barebox+0x2d/0x94) from [<9fe51e3b>] (barebox_non_pbl_start+0xbb/0xf8)
[<9fe51e3b>] (barebox_non_pbl_start+0xbb/0xf8) from [<9fe00005>] (__bare_init_start+0x1/0xc)
[<9fe535fd>] (unwind_backtrace+0x1/0x58) from [<9fe00bbd>] (panic+0x1d/0x34)
[<9fe00bbd>] (panic+0x1d/0x34) from [<9fe51c11>] (do_exception+0xd/0x10)
[<9fe51c11>] (do_exception+0xd/0x10) from [<9fe51c71>] (do_data_abort+0x21/0x2c)
[<9fe51c71>] (do_data_abort+0x21/0x2c) from [<9fe51714>] (do_abort_6+0x48/0x54)
#############################################################################
Now with the last version (2017.05.0) I have another problem. This is what
I see on the console while trying to boot :
#############################################################################
state: Cannot resolve "backend" phandle
state state.7: probe failed: Invalid argument
#############################################################################
The question is, how should I declare the backend in the dts file and which
one is the most stable version that supports my case?
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