On 9 February 2018 at 04:16, Ruiyu Ni <[email protected]> wrote:
> The patch adds more debug message in ResetSystem().
> It also removes unnecessary check of mResetNotifyDepth.
>
> Cc: Liming Gao <[email protected]>
> Cc: Michael D Kinney <[email protected]>
> Reviewed-by: Star Zeng <[email protected]>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ruiyu Ni <[email protected]>
> ---
> .../Universal/ResetSystemRuntimeDxe/ResetSystem.c | 88
> +++++++++++-----------
> 1 file changed, 44 insertions(+), 44 deletions(-)
>
> diff --git a/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c
> b/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c
> index fed527fac2..2c795426f5 100644
> --- a/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c
> +++ b/MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystem.c
> @@ -15,6 +15,10 @@
>
> #include "ResetSystem.h"
>
> +GLOBAL_REMOVE_IF_UNREFERENCED CHAR16 *mResetTypeStr[] = {
> + L"Cold", L"Warm", L"Shutdown", L"PlatformSpecific"
> +};
> +
> //
> // The current ResetSystem() notification recursion depth
> //
> @@ -251,16 +255,6 @@ ResetSystem (
> LIST_ENTRY *Link;
> RESET_NOTIFY_ENTRY *Entry;
>
> - //
> - // Above the maximum recursion depth, so do the smallest amount of
> - // work to perform a cold reset.
> - //
> - if (mResetNotifyDepth >= MAX_RESET_NOTIFY_DEPTH) {
> - ResetCold ();
> - ASSERT (FALSE);
> - return;
> - }
> -
> //
> // Only do REPORT_STATUS_CODE() on first call to ResetSystem()
> //
> @@ -272,40 +266,47 @@ ResetSystem (
> }
>
> mResetNotifyDepth++;
> - if (!EfiAtRuntime () && mResetNotifyDepth < MAX_RESET_NOTIFY_DEPTH) {
> - //
> - // Call reset notification functions registered through the
> - // EDKII_PLATFORM_SPECIFIC_RESET_FILTER_PROTOCOL.
> - //
> - for ( Link = GetFirstNode (&mPlatformSpecificResetFilter.ResetNotifies)
> - ; !IsNull (&mPlatformSpecificResetFilter.ResetNotifies, Link)
> - ; Link = GetNextNode (&mPlatformSpecificResetFilter.ResetNotifies,
> Link)
> - ) {
> - Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);
> - Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);
> - }
> - //
> - // Call reset notification functions registered through the
> - // EFI_RESET_NOTIFICATION_PROTOCOL.
> - //
> - for ( Link = GetFirstNode (&mResetNotification.ResetNotifies)
> - ; !IsNull (&mResetNotification.ResetNotifies, Link)
> - ; Link = GetNextNode (&mResetNotification.ResetNotifies, Link)
> - ) {
> - Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);
> - Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);
> - }
> - //
> - // call reset notification functions registered through the
> - // EDKII_PLATFORM_SPECIFIC_RESET_HANDLER_PROTOCOL.
> - //
> - for ( Link = GetFirstNode (&mPlatformSpecificResetHandler.ResetNotifies)
> - ; !IsNull (&mPlatformSpecificResetHandler.ResetNotifies, Link)
> - ; Link = GetNextNode (&mPlatformSpecificResetHandler.ResetNotifies,
> Link)
> - ) {
> - Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);
> - Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);
> + DEBUG ((DEBUG_INFO, "DXE ResetSystem2: Reset call depth = %d.\n",
> mResetNotifyDepth));
> +
This DEBUG() print is breaking system reset from the Linux OS at
runtime in DEBUG builds.
[ 4.223704] reboot: Restarting system
[ 4.224733] Unable to handle kernel paging request at virtual
address 09000018
This is the boottime MMIO address of the UART on the QEMU mach-virt
model, and no runtime mapping exists for it, resulting in the crash.
Please ensure that DEBUG () is used with care in DXE_RUNTIME_DRIVER modules.
Thanks,
Ard.
(remainder of the crash log below)
[ 4.226725] Mem abort info:
[ 4.227564] Exception class = DABT (current EL), IL = 32 bits
[ 4.229329] SET = 0, FnV = 0
[ 4.230433] EA = 0, S1PTW = 0
[ 4.232230] Data abort info:
[ 4.233125] ISV = 0, ISS = 0x00000006
[ 4.234235] CM = 0, WnR = 0
[ 4.235178] user pgtable: 4k pages, 48-bit VAs, pgd = ffff80003aa97000
[ 4.237687] [0000000009000018] *pgd=0000000000000000
[ 4.239807] Internal error: Oops: 96000006 [#1] PREEMPT SMP
[ 4.242203] Modules linked in:
[ 4.243557] CPU: 0 PID: 2016 Comm: reboot Not tainted
4.14.20-rc1-01878-gd73f37b7c835-dirty #2100
[ 4.246771] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
[ 4.249075] task: ffff80003a9cd400 task.stack: ffff00000cfe8000
[ 4.251350] PC is at 0x242701fc
[ 4.252903] LR is at 0x242701d4
[ 4.254054] pc : [<00000000242701fc>] lr : [<00000000242701d4>]
pstate: 400001c5
[ 4.256417] sp : ffff00000cfeba60
[ 4.257444] x29: ffff00000cfeba60 x28: ffff80003a9cd400
[ 4.259094] x27: ffff0000089e1000 x26: 000000000000008e
[ 4.260729] x25: 0000000000000124 x24: 0000000000000000
[ 4.262379] x23: 0000000000000000 x22: 0000000009000018
[ 4.264017] x21: 0000000009000000 x20: ffff00000cfebb39
[ 4.265661] x19: 0000000009000018 x18: 0000000000000010
[ 4.267288] x17: 0000ffff8bebbe00 x16: ffff000008246818
[ 4.268916] x15: 00000000000000ff x14: 0000000000000001
[ 4.270560] x13: 0000000000000002 x12: 0000000000000002
[ 4.272271] x11: 0000000000000000 x10: 0000000000000002
[ 4.274010] x9 : 0000000000000000 x8 : 0000000000000002
[ 4.275640] x7 : 0000000024272850 x6 : 0000000000000000
[ 4.277297] x5 : 0000000000000001 x4 : 0000000000000001
[ 4.280108] x3 : 0000000000000000 x2 : 0000000000000001
[ 4.282505] x1 : ffff00000cfebb10 x0 : 0000000000000001
> + if (mResetNotifyDepth <= MAX_RESET_NOTIFY_DEPTH) {
> + if (!EfiAtRuntime ()) {
> + //
> + // Call reset notification functions registered through the
> + // EDKII_PLATFORM_SPECIFIC_RESET_FILTER_PROTOCOL.
> + //
> + for ( Link = GetFirstNode (&mPlatformSpecificResetFilter.ResetNotifies)
> + ; !IsNull (&mPlatformSpecificResetFilter.ResetNotifies, Link)
> + ; Link = GetNextNode (&mPlatformSpecificResetFilter.ResetNotifies,
> Link)
> + ) {
> + Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);
> + Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);
> + }
> + //
> + // Call reset notification functions registered through the
> + // EFI_RESET_NOTIFICATION_PROTOCOL.
> + //
> + for ( Link = GetFirstNode (&mResetNotification.ResetNotifies)
> + ; !IsNull (&mResetNotification.ResetNotifies, Link)
> + ; Link = GetNextNode (&mResetNotification.ResetNotifies, Link)
> + ) {
> + Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);
> + Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);
> + }
> + //
> + // call reset notification functions registered through the
> + // EDKII_PLATFORM_SPECIFIC_RESET_HANDLER_PROTOCOL.
> + //
> + for ( Link = GetFirstNode
> (&mPlatformSpecificResetHandler.ResetNotifies)
> + ; !IsNull (&mPlatformSpecificResetHandler.ResetNotifies, Link)
> + ; Link = GetNextNode
> (&mPlatformSpecificResetHandler.ResetNotifies, Link)
> + ) {
> + Entry = RESET_NOTIFY_ENTRY_FROM_LINK (Link);
> + Entry->ResetNotify (ResetType, ResetStatus, DataSize, ResetData);
> + }
> }
> + } else {
> + ASSERT (ResetType < ARRAY_SIZE (mResetTypeStr));
> + DEBUG ((DEBUG_ERROR, "DXE ResetSystem2: Maximum reset call depth is met.
> Use the current reset type: %s!\n", mResetTypeStr[ResetType]));
> }
>
> switch (ResetType) {
> @@ -331,7 +332,6 @@ ResetSystem (
> }
>
> ResetWarm ();
> -
> break;
>
> case EfiResetCold:
> --
> 2.16.1.windows.1
>
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