[PATCH 0/2] system reset rework to list, priority

[Nikita Shubin]

From: Nikita Shubin <n.shubin at yadro.com>

Reworking current sbi_system reset to support multiply reset handlers.

There are situation possible when one reset handler is responsible for
shutdown and the other for reset, they can be both capable of reset/shutdown
but some are more desirable than others.

rfc -> v0:
lib: sbi: convert reset to list:
- restored dom->system_reset_allowed check
- removed reset devices iterations from sbi_system_reset, we rely on
  sbi_system_reset_get_device
- to_system_reset_device +static

lib: sbi: add priority for reset handler:
- changed priority meaning to classic, the more the more prioritized
- moved all checks to sbi_system_reset

Currently all reset devices have priority of 1 - the least priority,
as it wasn't supposed to have more than one handler before this patch,
it won't break anything.

Tested with 2 reset handlers on Sifive Unmatched, gpio-poweroff responsible 
for shutdown and da9063 responsible for reset:

Platform Reboot Device    : da9063
Platform Shutdown Device  : gpio-reset

Without da9063 it looks like:

Platform Reboot Device    : ---
Platform Shutdown Device  : gpio-reset

Nikita Shubin (2):
  lib: sbi: convert reset to list
  lib: sbi: add priority for reset handler

 include/sbi/sbi_system.h              | 13 ++++++--
 lib/sbi/sbi_init.c                    |  7 ++--
 lib/sbi/sbi_system.c                  | 47 +++++++++++++++++++--------
 lib/utils/reset/fdt_reset_gpio.c      |  2 +-
 lib/utils/reset/fdt_reset_sunxi_wdt.c |  2 +-
 lib/utils/reset/fdt_reset_thead.c     |  2 +-
 lib/utils/sys/htif.c                  |  2 +-
 lib/utils/sys/sifive_test.c           |  2 +-
 platform/kendryte/k210/platform.c     |  2 +-
 platform/nuclei/ux600/platform.c      |  2 +-
 10 files changed, 57 insertions(+), 24 deletions(-)

-- 
2.31.1