Simon, Stephen,

On 2019/8/15 上午3:35, Simon Glass wrote:
Hi Kever,

On Tue, 13 Aug 2019 at 20:46, Kever Yang <> wrote:
Hi Urja, Simon,

This patch is not able to pass the sandbox_spl test, it reports:
[1]    26463 segmentation fault (core dumped)  ./u-boot

The driver looks good to me, no idea what cause the issue.

- Kever

Urja Rannikko <> 于2019年5月17日周五 上午5:49写道:
Based on snooping around the linux kernel rk8xx driver.
Tested on an ASUS C201.

Signed-off-by: Urja Rannikko <>
  drivers/power/pmic/Kconfig |  1 +
  drivers/power/pmic/rk8xx.c | 62 +++++++++++++++++++++++++++++++++++---
  include/power/rk8xx_pmic.h |  4 +++
  3 files changed, 63 insertions(+), 4 deletions(-)

This driver is enabled for sandbox, although I doubt it is in the
device tree, so I'm not sure why it would be called. But if it is, and
it directly accesses memory, then it might be the reason.

You should run the test under gdb to see where it is crashing.

gdb output is:
Program received signal SIGSEGV, Segmentation fault.
0x00005555556182c6 in strcmp (cs=cs@entry=0x55555566023b "root_driver", ct=0x1 <error: Cannot access memory at address 0x1>)
    at lib/string.c:190
190            if ((__res = *cs - *ct++) != 0 || !*cs++)

This does not help much for crashing reason, and I have narrow down the cause, I believe the
crash related to "DM_GET_DRIVER(pmic_rk8xx)",
- if I replace the 'pmic_rk8xx' in DM_GET_DRIVER() to any of other available driver, u-boot does not crash; - if I move the new 'rk8xx_sysreset' driver to other files, eg. pmic/sandbox.c, u-boot does not crash; Any more suggestion, or could you help to cherry pick this patch, and you should reproduce
this issue:
    make sandbox_spl_defconfig all

- Kever


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