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audk/EmbeddedPkg/Ebl/HwDebug.c

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/** @file
Basic command line parser for EBL (Embedded Boot Loader)
Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name: HwDebug.c
Commands useful for debugging hardware.
**/
#include "Ebl.h"
/**
Dump memory
Argv[0] - "md"[.#] # is optional width 1, 2, 4, or 8. Default 1
Argv[1] - Hex Address to dump
Argv[2] - Number of hex bytes to dump (0x20 is default)
md.4 0x123445678 50 ; Dump 0x50 4 byte quantities starting at 0x123445678
md 0x123445678 40 ; Dump 0x40 1 byte quantities starting at 0x123445678
md 0x123445678 ; Dump 0x20 1 byte quantities starting at 0x123445678
@param Argc Number of command arguments in Argv
@param Argv Array of strings that represent the parsed command line.
Argv[0] is the command name
@return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
EblMdCmd (
IN UINTN Argc,
IN CHAR8 **Argv
)
{
STATIC UINT8 *Address = NULL;
STATIC UINTN Length = 0x20;
STATIC UINTN Width;
Width = WidthFromCommandName (Argv[0], 1);
switch (Argc) {
case 3:
Length = AsciiStrHexToUintn(Argv[2]);
case 2:
Address = (UINT8 *)AsciiStrHexToUintn (Argv[1]);
default:
break;
}
OutputData (Address, Length, Width, (UINTN)Address);
Address += Length;
return EFI_SUCCESS;
}
/**
Fill Memory with data
Argv[0] - "mfill"[.#] # is optional width 1, 2, 4, or 8. Default 4
Argv[1] - Hex Address to fill
Argv[2] - Data to write (0x00 is default)
Argv[3] - Number of units to dump.
mf.1 0x123445678 aa 100 ; Start at 0x123445678 and write aa (1 byte) to the next 100 bytes
mf.4 0x123445678 aa 100 ; Start at 0x123445678 and write aa (4 byte) to the next 400 bytes
mf 0x123445678 aa ; Start at 0x123445678 and write aa (4 byte) to the next 1 byte
mf 0x123445678 ; Start at 0x123445678 and write 00 (4 byte) to the next 1 byte
@param Argc Number of command arguments in Argv
@param Argv Array of strings that represent the parsed command line.
Argv[0] is the command name
@return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
EblMfillCmd (
IN UINTN Argc,
IN CHAR8 **Argv
)
{
UINTN Address;
UINTN EndAddress;
UINT32 Data;
UINTN Length;
UINTN Width;
if (Argc < 2) {
return EFI_INVALID_PARAMETER;
}
Width = WidthFromCommandName (Argv[0], 4);
Address = AsciiStrHexToUintn (Argv[1]);
Data = (Argc > 2) ? (UINT32)AsciiStrHexToUintn (Argv[2]) : 0;
Length = (Argc > 3) ? AsciiStrHexToUintn (Argv[3]) : 1;
for (EndAddress = Address + (Length * Width); Address < EndAddress; Address += Width) {
if (Width == 4) {
MmioWrite32 (Address, Data);
} else if (Width == 2) {
MmioWrite16 (Address, (UINT16)Data);
} else {
MmioWrite8 (Address, (UINT8)Data);
}
}
return EFI_SUCCESS;
}
//
// Strings for PCI Class code [2]
//
CHAR8 *gPciDevClass[] = {
"Old Device ",
"Mass storage ",
"Network ",
"Display ",
"Multimedia ",
"Memory controller ",
"Bridge device ",
"simple communications ",
"base system peripherals",
"Input devices ",
"Docking stations ",
"Processors ",
"serial bus ",
};
CHAR8 *gPciSerialClassCodes[] = {
"Mass storage ",
"Firewire ",
"ACCESS bus ",
"SSA ",
"USB "
};
/**
PCI Dump
Argv[0] - "pci"
Argv[1] - bus
Argv[2] - dev
Argv[3] - func
@param Argc Number of command arguments in Argv
@param Argv Array of strings that represent the parsed command line.
Argv[0] is the command name
@return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
EblPciCmd (
IN UINTN Argc,
IN CHAR8 **Argv
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *Pci;
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
UINTN Seg;
UINTN Bus;
UINTN Dev;
UINTN Func;
UINTN BusArg;
UINTN DevArg;
UINTN FuncArg;
UINTN Index;
UINTN Count;
PCI_TYPE_GENERIC PciHeader;
PCI_TYPE_GENERIC *Header;
PCI_BRIDGE_CONTROL_REGISTER *Bridge;
PCI_DEVICE_HEADER_TYPE_REGION *Device;
PCI_DEVICE_INDEPENDENT_REGION *Hdr;
CHAR8 *Str;
UINTN ThisBus;
BusArg = (Argc > 1) ? AsciiStrDecimalToUintn (Argv[1]) : 0;
DevArg = (Argc > 2) ? AsciiStrDecimalToUintn (Argv[2]) : 0;
FuncArg = (Argc > 3) ? AsciiStrDecimalToUintn (Argv[3]) : 0;
Header = &PciHeader;
Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiPciIoProtocolGuid, NULL, &HandleCount, &HandleBuffer);
if (EFI_ERROR (Status)) {
AsciiPrint ("No PCI devices found in the system\n");
return EFI_SUCCESS;
}
if (Argc == 1) {
// Dump all PCI devices
AsciiPrint ("BusDevFun VendorId DeviceId Device Class Sub-Class\n");
AsciiPrint ("_____________________________________________________________");
for (ThisBus = 0; ThisBus <= PCI_MAX_BUS; ThisBus++) {
for (Index = 0; Index < HandleCount; Index++) {
Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiPciIoProtocolGuid, (VOID **)&Pci);
if (!EFI_ERROR (Status)) {
Pci->GetLocation (Pci, &Seg, &Bus, &Dev, &Func);
if (ThisBus != Bus) {
continue;
}
AsciiPrint ("\n%03d.%02d.%02d", Bus, Dev, Func);
Status = Pci->Pci.Read (Pci, EfiPciIoWidthUint32, 0, sizeof (PciHeader)/sizeof (UINT32), &PciHeader);
if (!EFI_ERROR (Status)) {
Hdr = &PciHeader.Bridge.Hdr;
if (Hdr->ClassCode[2] < sizeof (gPciDevClass)/sizeof (VOID *)) {
Str = gPciDevClass[Hdr->ClassCode[2]];
if (Hdr->ClassCode[2] == PCI_CLASS_SERIAL) {
if (Hdr->ClassCode[1] < sizeof (gPciSerialClassCodes)/sizeof (VOID *)) {
// print out Firewire or USB inplace of Serial Bus controllers
Str = gPciSerialClassCodes[Hdr->ClassCode[1]];
}
}
} else {
Str = "Unknown device ";
}
AsciiPrint (" 0x%04x 0x%04x %a 0x%02x", Hdr->VendorId, Hdr->DeviceId, Str, Hdr->ClassCode[1]);
}
if (Seg != 0) {
// Only print Segment if it is non zero. If you only have one PCI segment it is
// redundent to print it out
AsciiPrint (" Seg:%d", Seg);
}
}
}
}
AsciiPrint ("\n");
} else {
// Dump specific PCI device
for (Index = 0; Index < HandleCount; Index++) {
Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiPciIoProtocolGuid, (VOID **)&Pci);
if (!EFI_ERROR (Status)) {
Pci->GetLocation (Pci, &Seg, &Bus, &Dev, &Func);
if ((Bus == BusArg) && (Dev == DevArg) && (Func == FuncArg)) {
// Only print Segment if it is non zero. If you only have one PCI segment it is
// redundant to print it out
if (Seg != 0) {
AsciiPrint ("Seg:%d ", Seg);
}
AsciiPrint ("Bus:%d Dev:%d Func:%d ", Bus, Dev, Func);
Status = Pci->Pci.Read (Pci, EfiPciIoWidthUint32, 0, sizeof (PciHeader)/sizeof (UINT32), Header);
if (!EFI_ERROR (Status)) {
Hdr = &PciHeader.Bridge.Hdr;
if (IS_PCI_BRIDGE (&PciHeader.Bridge)) {
Bridge = &PciHeader.Bridge.Bridge;
AsciiPrint (
"PCI Bridge. Bus Primary %d Secondary %d Subordinate %d\n",
Bridge->PrimaryBus, Bridge->SecondaryBus, Bridge->SubordinateBus
);
AsciiPrint (" Bar 0: 0x%08x Bar 1: 0x%08x\n", Bridge->Bar[0], Bridge->Bar[1]);
} else {
Device = &PciHeader.Device.Device;
AsciiPrint (
"VendorId: 0x%04x DeviceId: 0x%04x SubSusVendorId: 0x%04x SubSysDeviceId: 0x%04x\n",
Hdr->VendorId, Hdr->DeviceId, Device->SubsystemVendorID, Device->SubsystemID
);
AsciiPrint (" Class Code: 0x%02x 0x%02x 0x%02x\n", Hdr->ClassCode[2], Hdr->ClassCode[1], Hdr->ClassCode[0]);
for (Count = 0; Count < 6; Count++) {
AsciiPrint (" Bar %d: 0x%08x\n", Count, Device->Bar[Count]);
}
}
}
AsciiPrint ("\n");
break;
}
}
}
}
FreePool (HandleBuffer);
return EFI_SUCCESS;
}
GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mCmdPciDebugTemplate[] = {
{
"pci",
" [bus] [dev] [func]; Dump PCI",
NULL,
EblPciCmd
}
};
GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mCmdHwDebugTemplate[] =
{
{
"md",
"[.{1|2|4}] [Addr] [Len] [1|2|4]; Memory Dump from Addr Len bytes",
NULL,
EblMdCmd
},
{
"mfill",
"[.{1|2|4}] Addr Len [data]; Memory Fill Addr Len*(1|2|4) bytes of data(0)",
NULL,
EblMfillCmd
},
};
/**
Initialize the commands in this in this file
**/
VOID
EblInitializemdHwDebugCmds (
VOID
)
{
if (FeaturePcdGet (PcdEmbeddedHwDebugCmd)) {
EblAddCommands (mCmdHwDebugTemplate, sizeof (mCmdHwDebugTemplate)/sizeof (EBL_COMMAND_TABLE));
}
if (FeaturePcdGet (PcdEmbeddedPciDebugCmd)) {
EblAddCommands (mCmdPciDebugTemplate, sizeof (mCmdPciDebugTemplate)/sizeof (EBL_COMMAND_TABLE));
}
}
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