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fu-ifd-common.c
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fu-ifd-common.c
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/*
* Copyright (C) 2021 Richard Hughes <richard@hughsie.com>
*
* SPDX-License-Identifier: LGPL-2.1+
*/
#include "config.h"
#include "fu-ifd-common.h"
/**
* fu_ifd_region_to_string:
* @region: A #FuIfdRegion, e.g. %FU_IFD_REGION_BIOS
*
* Converts a #FuIfdRegion to a string.
*
* Returns: identifier string
*
* Since: 1.6.2
**/
const gchar *
fu_ifd_region_to_string(FuIfdRegion region)
{
if (region == FU_IFD_REGION_DESC)
return "desc";
if (region == FU_IFD_REGION_BIOS)
return "bios";
if (region == FU_IFD_REGION_ME)
return "me";
if (region == FU_IFD_REGION_GBE)
return "gbe";
if (region == FU_IFD_REGION_PLATFORM)
return "platform";
if (region == FU_IFD_REGION_DEVEXP)
return "devexp";
if (region == FU_IFD_REGION_BIOS2)
return "bios2";
if (region == FU_IFD_REGION_EC)
return "ec";
if (region == FU_IFD_REGION_IE)
return "ie";
if (region == FU_IFD_REGION_10GBE)
return "10gbe";
return NULL;
}
/**
* fu_ifd_region_to_name:
* @region: A #FuIfdRegion, e.g. %FU_IFD_REGION_BIOS
*
* Converts a #FuIfdRegion to a name the user might recognize.
*
* Returns: identifier string
*
* Since: 1.6.2
**/
const gchar *
fu_ifd_region_to_name(FuIfdRegion region)
{
if (region == FU_IFD_REGION_DESC)
return "IFD descriptor region";
if (region == FU_IFD_REGION_BIOS)
return "BIOS";
if (region == FU_IFD_REGION_ME)
return "Intel Management Engine";
if (region == FU_IFD_REGION_GBE)
return "Gigabit Ethernet";
if (region == FU_IFD_REGION_PLATFORM)
return "Platform firmware";
if (region == FU_IFD_REGION_DEVEXP)
return "Device Firmware";
if (region == FU_IFD_REGION_BIOS2)
return "BIOS Backup";
if (region == FU_IFD_REGION_EC)
return "Embedded Controller";
if (region == FU_IFD_REGION_IE)
return "Innovation Engine";
if (region == FU_IFD_REGION_10GBE)
return "10 Gigabit Ethernet";
return NULL;
}
/**
* fu_ifd_access_to_string:
* @access: A #FuIfdAccess, e.g. %FU_IFD_ACCESS_READ
*
* Converts a #FuIfdAccess to a string.
*
* Returns: identifier string
*
* Since: 1.6.2
**/
const gchar *
fu_ifd_access_to_string(FuIfdAccess access)
{
if (access == FU_IFD_ACCESS_NONE)
return "--";
if (access == FU_IFD_ACCESS_READ)
return "ro";
if (access == FU_IFD_ACCESS_WRITE)
return "wr";
if (access == (FU_IFD_ACCESS_READ | FU_IFD_ACCESS_WRITE))
return "rw";
return NULL;
}
/**
* fu_ifd_region_to_access:
* @region: A #FuIfdRegion, e.g. %FU_IFD_REGION_BIOS
* @flash_master: flash master number
* @new_layout: if Skylake or newer
*
* Converts a #FuIfdRegion to an access level.
*
* Returns: access
*
* Since: 1.6.2
**/
FuIfdAccess
fu_ifd_region_to_access(FuIfdRegion region, guint32 flash_master, gboolean new_layout)
{
guint8 bit_r = 0;
guint8 bit_w = 0;
/* new layout */
if (new_layout) {
bit_r = (flash_master >> (region + 8)) & 0b1;
bit_w = (flash_master >> (region + 20)) & 0b1;
return (bit_r ? FU_IFD_ACCESS_READ : FU_IFD_ACCESS_NONE) |
(bit_w ? FU_IFD_ACCESS_WRITE : FU_IFD_ACCESS_NONE);
}
/* old layout */
if (region == FU_IFD_REGION_DESC) {
bit_r = 16;
bit_w = 24;
} else if (region == FU_IFD_REGION_BIOS) {
bit_r = 17;
bit_w = 25;
} else if (region == FU_IFD_REGION_ME) {
bit_r = 18;
bit_w = 26;
} else if (region == FU_IFD_REGION_GBE) {
bit_r = 19;
bit_w = 27;
}
return ((flash_master >> bit_r) & 0b1 ? FU_IFD_ACCESS_READ : FU_IFD_ACCESS_NONE) |
((flash_master >> bit_w) & 0b1 ? FU_IFD_ACCESS_WRITE : FU_IFD_ACCESS_NONE);
}