Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2005, 2012 IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *	Kent Yoder <key@linux.vnet.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *	Seiji Munetoh <munetoh@jp.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *	Stefan Berger <stefanb@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *	Reiner Sailer <sailer@watson.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *	Kylene Hall <kjhall@us.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *	Nayna Jain <nayna@linux.vnet.ibm.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * Maintained by: <tpmdd-devel@lists.sourceforge.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  * Access to the event log created by a system's firmware / BIOS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/security.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/tpm_eventlog.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include "../tpm.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include "common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) static const char* tcpa_event_type_strings[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	"PREBOOT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	"POST CODE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	"",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	"NO ACTION",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	"SEPARATOR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	"ACTION",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	"EVENT TAG",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	"S-CRTM Contents",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	"S-CRTM Version",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	"CPU Microcode",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	"Platform Config Flags",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	"Table of Devices",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	"Compact Hash",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	"IPL",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	"IPL Partition Data",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	"Non-Host Code",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	"Non-Host Config",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	"Non-Host Info"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) static const char* tcpa_pc_event_id_strings[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	"",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	"SMBIOS",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	"BIS Certificate",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	"POST BIOS ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	"ESCD ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	"CMOS",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	"NVRAM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	"Option ROM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	"Option ROM config",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	"",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	"Option ROM microcode ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	"S-CRTM Version",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	"S-CRTM Contents ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	"POST Contents ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	"Table of Devices",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) /* returns pointer to start of pos. entry of tcg log */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) static void *tpm1_bios_measurements_start(struct seq_file *m, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	loff_t i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	struct tpm_chip *chip = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	struct tpm_bios_log *log = &chip->log;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	void *addr = log->bios_event_log;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	void *limit = log->bios_event_log_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	struct tcpa_event *event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	u32 converted_event_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	u32 converted_event_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	/* read over *pos measurements */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		event = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		/* check if current entry is valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 		if (addr + sizeof(struct tcpa_event) > limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		converted_event_size =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		    do_endian_conversion(event->event_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		converted_event_type =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		    do_endian_conversion(event->event_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		if (((converted_event_type == 0) && (converted_event_size == 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		    || ((addr + sizeof(struct tcpa_event) + converted_event_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			> limit))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 			return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		if (i++ == *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 		addr += (sizeof(struct tcpa_event) + converted_event_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	} while (1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	return addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static void *tpm1_bios_measurements_next(struct seq_file *m, void *v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 					loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	struct tcpa_event *event = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	struct tpm_chip *chip = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	struct tpm_bios_log *log = &chip->log;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	void *limit = log->bios_event_log_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	u32 converted_event_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	u32 converted_event_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	(*pos)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	converted_event_size = do_endian_conversion(event->event_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	v += sizeof(struct tcpa_event) + converted_event_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	/* now check if current entry is valid */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if ((v + sizeof(struct tcpa_event)) > limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	event = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	converted_event_size = do_endian_conversion(event->event_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	converted_event_type = do_endian_conversion(event->event_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	if (((converted_event_type == 0) && (converted_event_size == 0)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	    ((v + sizeof(struct tcpa_event) + converted_event_size) > limit))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	return v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static void tpm1_bios_measurements_stop(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static int get_event_name(char *dest, struct tcpa_event *event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			unsigned char * event_entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	const char *name = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	/* 41 so there is room for 40 data and 1 nul */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	char data[41] = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	int i, n_len = 0, d_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	struct tcpa_pc_event *pc_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	switch (do_endian_conversion(event->event_type)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	case PREBOOT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	case POST_CODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	case UNUSED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	case NO_ACTION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	case SCRTM_CONTENTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	case SCRTM_VERSION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	case CPU_MICROCODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	case PLATFORM_CONFIG_FLAGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	case TABLE_OF_DEVICES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	case COMPACT_HASH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	case IPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	case IPL_PARTITION_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	case NONHOST_CODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	case NONHOST_CONFIG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	case NONHOST_INFO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		name = tcpa_event_type_strings[do_endian_conversion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 						(event->event_type)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		n_len = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	case SEPARATOR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	case ACTION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		if (MAX_TEXT_EVENT >
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		    do_endian_conversion(event->event_size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			name = event_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			n_len = do_endian_conversion(event->event_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	case EVENT_TAG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		pc_event = (struct tcpa_pc_event *)event_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		/* ToDo Row data -> Base64 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		switch (do_endian_conversion(pc_event->event_id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		case SMBIOS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		case BIS_CERT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		case CMOS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		case NVRAM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		case OPTION_ROM_EXEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		case OPTION_ROM_CONFIG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		case S_CRTM_VERSION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 			name = tcpa_pc_event_id_strings[do_endian_conversion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 							(pc_event->event_id)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 			n_len = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		/* hash data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		case POST_BIOS_ROM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		case ESCD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		case OPTION_ROM_MICROCODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		case S_CRTM_CONTENTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		case POST_CONTENTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 			name = tcpa_pc_event_id_strings[do_endian_conversion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 							(pc_event->event_id)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 			n_len = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			for (i = 0; i < 20; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 				d_len += sprintf(&data[2*i], "%02x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 						pc_event->event_data[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	return snprintf(dest, MAX_TEXT_EVENT, "[%.*s%.*s]",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			n_len, name, d_len, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static int tpm1_binary_bios_measurements_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	struct tcpa_event *event = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	struct tcpa_event temp_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	char *temp_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	memcpy(&temp_event, event, sizeof(struct tcpa_event));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	/* convert raw integers for endianness */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	temp_event.pcr_index = do_endian_conversion(event->pcr_index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	temp_event.event_type = do_endian_conversion(event->event_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	temp_event.event_size = do_endian_conversion(event->event_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	temp_ptr = (char *) &temp_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	for (i = 0; i < (sizeof(struct tcpa_event) - 1) ; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		seq_putc(m, temp_ptr[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	temp_ptr = (char *) v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	for (i = (sizeof(struct tcpa_event) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	     i < (sizeof(struct tcpa_event) + temp_event.event_size); i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		seq_putc(m, temp_ptr[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static int tpm1_ascii_bios_measurements_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	char *eventname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	struct tcpa_event *event = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	unsigned char *event_entry =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	    (unsigned char *)(v + sizeof(struct tcpa_event));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	eventname = kmalloc(MAX_TEXT_EVENT, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	if (!eventname) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		printk(KERN_ERR "%s: ERROR - No Memory for event name\n ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		       __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	/* 1st: PCR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	seq_printf(m, "%2d ", do_endian_conversion(event->pcr_index));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	/* 2nd: SHA1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	seq_printf(m, "%20phN", event->pcr_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	/* 3rd: event type identifier */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	seq_printf(m, " %02x", do_endian_conversion(event->event_type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	len += get_event_name(eventname, event, event_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	/* 4th: eventname <= max + \'0' delimiter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	seq_printf(m, " %s\n", eventname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	kfree(eventname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) const struct seq_operations tpm1_ascii_b_measurements_seqops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	.start = tpm1_bios_measurements_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	.next = tpm1_bios_measurements_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	.stop = tpm1_bios_measurements_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	.show = tpm1_ascii_bios_measurements_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) const struct seq_operations tpm1_binary_b_measurements_seqops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	.start = tpm1_bios_measurements_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	.next = tpm1_bios_measurements_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	.stop = tpm1_bios_measurements_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	.show = tpm1_binary_bios_measurements_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) };