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ShellPkg: Export default shell delay as PCD 

Create PcdShellDefaultDelay to configure the default
delay the shell provides for the user at the start time
if the user wishes to cancel the execution of a potential
startup script.

The shell application already allows the user to override
the delay default value by specifying the -delay cmdline
argument. This however cannot be used when loading the
shell application using direct boot or when integrating
the shell into the platform firmware build.

Thus, a PCD can be easily configured by the developer
either at build time, or even at runtime.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Zhichao Gao <zhichao.gao@intel.com>
Signed-off-by: Tomas Pilar <tomas@quicinc.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Tomas Pilar 2023-01-03 09:02:29 -08:00 committed by mergify[bot]
parent bf5678b580
commit e96a5734f6
3 changed files with 6 additions and 1 deletions
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2
ShellPkg/Application/Shell/Shell.c
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@ -990,7 +990,7 @@ ProcessCommandLine (
ShellInfoObject.ShellInitSettings.BitUnion.Bits.Delay = FALSE;
ShellInfoObject.ShellInitSettings.BitUnion.Bits.Exit = FALSE;
ShellInfoObject.ShellInitSettings.BitUnion.Bits.NoNest = FALSE;
ShellInfoObject.ShellInitSettings.Delay = 5;
ShellInfoObject.ShellInitSettings.Delay = PcdGet32 (PcdShellDefaultDelay);
//
// Start LoopVar at 0 to parse only optional arguments at Argv[0]

1
ShellPkg/Application/Shell/Shell.inf
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@ -103,3 +103,4 @@
gEfiShellPkgTokenSpaceGuid.PcdShellForceConsole ## CONSUMES
gEfiShellPkgTokenSpaceGuid.PcdShellSupplier ## CONSUMES
gEfiShellPkgTokenSpaceGuid.PcdShellMaxHistoryCommandCount ## CONSUMES
gEfiShellPkgTokenSpaceGuid.PcdShellDefaultDelay ## CONSUMES

4
ShellPkg/ShellPkg.dec
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@ -136,3 +136,7 @@
# Up to this many bytes of vendor specific data will be used. Default is 0
# (disabled).
gEfiShellPkgTokenSpaceGuid.PcdShellVendorExtendedDecode|0|UINT32|0x00000013
## Controls the default delay the shell will offer to the user at the
# start to check if the user wishes to cancel the script autostart
gEfiShellPkgTokenSpaceGuid.PcdShellDefaultDelay|5|UINT32|0x00000015