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Committing changes to the comments, after review with engineers.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9018 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
pkandel
2009-07-28 13:25:37 +00:00
parent d3a12d776c
commit 5259c97d7a
36 changed files with 248 additions and 324 deletions
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32
IntelFrameworkPkg/Include/Protocol/LegacyBios.h
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@@ -6,13 +6,10 @@
Note: The names for EFI_IA32_REGISTER_SET elements were picked to follow
well known naming conventions.
Thunk - A thunk is a transition from one processor mode to another. A Thunk
is a transition from native EFI mode to 16-bit mode. A reverse thunk
would be a transition from 16-bit mode to native EFI mode.
You most likely should not use this protocol! Find the EFI way to solve the
problem to make your code portable
Thunk is the code that switches from 32-bit protected environment into the 16-bit real-mode
environment. Reverse thunk is the code that does the opposite.
Copyright (c) 2007 - 2009, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -1122,10 +1119,8 @@ typedef union {
@param[in,out] Reg Register contexted passed into (and returned) from thunk to
16-bit mode
@retval FALSE Thunk completed, and there were no BIOS errors in the target code.
See Regs for status.
@retval TRUE There was a BIOS erro in the target code.
@retval TRUE Thunk completed with no BIOS errors in the target code. See Regs for status.
@retval FALSE There was a BIOS error in the target code.
**/
typedef
BOOLEAN
@@ -1148,10 +1143,7 @@ BOOLEAN
@param[in] Stack Caller allocated stack used to pass arguments
@param[in] StackSize Size of Stack in bytes
@retval FALSE Thunk completed, and there were no BIOS errors in the target code.
See Regs for status.
@retval TRUE There was a BIOS erro in the target code.
@retval FALSE Thunk completed with no BIOS errors in the target code. See Regs for status. @retval TRUE There was a BIOS error in the target code.
**/
typedef
BOOLEAN
@@ -1233,7 +1225,7 @@ EFI_STATUS
/**
This function attempts to traditionally boot the specified BootOption. If the EFI context has
been compromised, this function will not return. This procedure is not used for loading an EFIaware
been compromised, this function will not return. This procedure is not used for loading an EFI-aware
OS off a traditional device. The following actions occur:
- Get EFI SMBIOS data structures, convert them to a traditional format, and copy to
Compatibility16.
@@ -1252,7 +1244,7 @@ EFI_STATUS
- Invoke the Compatibility16 Table function Compatibility16Boot(). This invocation
causes a thunk into the Compatibility16 code, which does an INT19.
- If the Compatibility16Boot() function returns, then the boot failed in a graceful
manner—i.e., EFI code is still valid. An ungraceful boot failure causes a reset because the state
manner--meaning that the EFI code is still valid. An ungraceful boot failure causes a reset because the state
of EFI code is unknown.
@param[in] This Protocol instance pointer.
@@ -1260,11 +1252,7 @@ EFI_STATUS
@param[in] LoadOptionSize Size of LoadOption in size.
@param[in] LoadOption LoadOption from BootXXXX variable
@retval EFI_DEVICE_ERROR Failed to boot from any boot device and memory is uncorrupted.
Note: This function normally never returns. It will either boot the
OS or reset the system if memory has been "corrupted" by loading
a boot sector and passing control to it.
@retval EFI_DEVICE_ERROR Failed to boot from any boot device and memory is uncorrupted. Note: This function normally does not returns. It will either boot the OS or reset the system if memory has been "corrupted" by loading a boot sector and passing control to it.
**/
typedef
EFI_STATUS
@@ -1278,7 +1266,7 @@ EFI_STATUS
/**
This function takes the Leds input parameter and sets/resets the BDA accordingly.
Leds is also passed to Compatibility16 code, in case any special processing is required.
This function is normally called from EFI Setup drivers that handle userselectable
This function is normally called from EFI Setup drivers that handle user-selectable
keyboard options such as boot with NUM LOCK on/off. This function does not
touch the keyboard or keyboard LEDs but only the BDA.