u-boot/board/xilinx/common/fru_ops.c

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// SPDX-License-Identifier: GPL-2.0
/*
* (C) Copyright 2019 - 2022, Xilinx, Inc.
* (C) Copyright 2022 - 2023, Advanced Micro Devices, Inc.
*/
#include <common.h>
#include <cpu_func.h>
#include <env.h>
#include <fdtdec.h>
#include <log.h>
#include <malloc.h>
#include <net.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include "fru.h"
struct fru_table fru_data __section(".data");
static u16 fru_cal_area_len(u8 len)
{
return len * FRU_COMMON_HDR_LEN_MULTIPLIER;
}
static u8 fru_version(u8 ver)
{
return ver & FRU_COMMON_HDR_VER_MASK;
}
static int fru_check_language(u8 code)
{
if (code != FRU_LANG_CODE_ENGLISH && code != FRU_LANG_CODE_ENGLISH_1) {
printf("FRU_ERROR: Only English Language is supported\n");
return -EINVAL;
}
return 0;
}
u8 fru_checksum(u8 *addr, u8 len)
{
u8 checksum = 0;
u8 cnt = len;
while (len--) {
if (*addr == 0)
cnt--;
checksum += *addr;
addr++;
}
/* If all data bytes are 0's return error */
if (!cnt)
return EINVAL;
return checksum;
}
static int fru_check_type_len(u8 type_len, u8 language, u8 *type)
{
int len;
*type = (type_len & FRU_TYPELEN_CODE_MASK) >> FRU_TYPELEN_TYPE_SHIFT;
len = type_len & FRU_TYPELEN_LEN_MASK;
return len;
}
/* Return len */
static u8 fru_gen_type_len(u8 *addr, char *name)
{
int len = strlen(name);
struct fru_board_info_member *member;
member = (struct fru_board_info_member *)addr;
member->type_len = FRU_TYPELEN_TYPE_ASCII8 << FRU_TYPELEN_TYPE_SHIFT;
member->type_len |= len;
debug("%lx/%lx: Add %s to 0x%lx (len 0x%x)\n", (ulong)addr,
(ulong)&member->type_len, name, (ulong)&member->name, len);
memcpy(&member->name, name, len);
/* Add +1 for type_len parameter */
return 1 + len;
}
int fru_generate(unsigned long addr, char *manufacturer, char *board_name,
char *serial_no, char *part_no, char *revision)
{
struct fru_common_hdr *header = (struct fru_common_hdr *)addr;
struct fru_board_info_header *board_info;
u8 *member;
u8 len, pad, modulo;
header->version = 1; /* Only version 1.0 is supported now */
header->off_internal = 0; /* not present */
header->off_chassis = 0; /* not present */
header->off_board = (sizeof(*header)) / 8; /* Starting offset 8 */
header->off_product = 0; /* not present */
header->off_multirec = 0; /* not present */
header->pad = 0;
/*
* This unsigned byte can be used to calculate a zero checksum
* for the data area following the header. I.e. the modulo 256 sum of
* the record data bytes plus the checksum byte equals zero.
*/
header->crc = 0; /* Clear before calculation */
header->crc = 0 - fru_checksum((u8 *)header, sizeof(*header));
/* board info is just right after header */
board_info = (void *)((u8 *)header + sizeof(*header));
debug("header %lx, board_info %lx\n", (ulong)header, (ulong)board_info);
board_info->ver = 1; /* 1.0 spec */
board_info->lang_code = 0; /* English */
board_info->time[0] = 0; /* unspecified */
board_info->time[1] = 0; /* unspecified */
board_info->time[2] = 0; /* unspecified */
/* Member fields are just after board_info header */
member = (u8 *)board_info + sizeof(*board_info);
len = fru_gen_type_len(member, manufacturer); /* Board Manufacturer */
member += len;
len = fru_gen_type_len(member, board_name); /* Board Product name */
member += len;
len = fru_gen_type_len(member, serial_no); /* Board Serial number */
member += len;
len = fru_gen_type_len(member, part_no); /* Board part number */
member += len;
len = fru_gen_type_len(member, "U-Boot generator"); /* File ID */
member += len;
len = fru_gen_type_len(member, revision); /* Revision */
member += len;
*member++ = 0xc1; /* Indication of no more fields */
len = member - (u8 *)board_info; /* Find current length */
len += 1; /* Add checksum there too for calculation */
modulo = len % 8;
if (modulo) {
/* Do not fill last item which is checksum */
for (pad = 0; pad < 8 - modulo; pad++)
*member++ = 0;
/* Increase structure size */
len += 8 - modulo;
}
board_info->len = len / 8; /* Size in multiples of 8 bytes */
*member = 0; /* Clear before calculation */
*member = 0 - fru_checksum((u8 *)board_info, len);
debug("checksum %x(addr %x)\n", *member, len);
env_set_hex("fru_addr", addr);
env_set_hex("filesize", (unsigned long)member - addr + 1);
return 0;
}
static int fru_parse_board(unsigned long addr)
{
u8 i, type;
int len;
u8 *data, *term, *limit, *next_addr, *eof;
memcpy(&fru_data.brd.ver, (void *)addr, 6);
/*
* eof marks the last data byte (without checksum). That's why checksum
* is address length - 1 and last data byte is length - 2.
*/
eof = (u8 *)(fru_data.brd.len * 8 + addr - 2);
addr += 6;
data = (u8 *)&fru_data.brd.manufacturer_type_len;
/* Record max structure limit not to write data over allocated space */
limit = (u8 *)&fru_data.brd + sizeof(struct fru_board_data);
for (i = 0; ; i++, data += FRU_BOARD_MAX_LEN) {
len = fru_check_type_len(*(u8 *)addr, fru_data.brd.lang_code,
&type);
next_addr = (u8 *)addr + 1;
if ((u8 *)addr >= eof) {
debug("Reach EOF record: addr %lx, eof %lx\n", addr,
(unsigned long)eof);
break;
}
/*
* Stop capture if the type is ASCII and valid field length
* is 1 (0xc1) and next FRU data is less than 0x20 (space " ")
* or it is 0x7f (delete 'DEL').
*/
if (type == FRU_TYPELEN_TYPE_ASCII8 && len == 1 &&
(*next_addr < 0x20 || *next_addr == 0x7F))
break;
/* Stop when amount of chars is more then fields to record */
if (data + len > limit)
break;
/* This record type/len field */
*data++ = *(u8 *)addr;
/* Add offset to match data */
addr += 1;
/* If len is 0 it means empty field that's why skip writing */
if (!len)
continue;
/* Record data field */
memcpy(data, (u8 *)addr, len);
term = data + (u8)len;
*term = 0;
addr += len;
}
if (i < FRU_BOARD_AREA_TOTAL_FIELDS) {
printf("Board area require minimum %d fields\n",
FRU_BOARD_AREA_TOTAL_FIELDS);
return -EINVAL;
}
return 0;
}
static int fru_parse_multirec(unsigned long addr)
{
struct fru_multirec_hdr mrc;
u8 checksum = 0;
u8 hdr_len = sizeof(struct fru_multirec_hdr);
int mac_len = 0;
debug("%s: multirec addr %lx\n", __func__, addr);
do {
memcpy(&mrc.rec_type, (void *)addr, hdr_len);
checksum = fru_checksum((u8 *)addr, hdr_len);
if (checksum) {
debug("%s header CRC error\n", __func__);
return -EINVAL;
}
if (mrc.rec_type == FRU_MULTIREC_TYPE_OEM) {
struct fru_multirec_mac *mac = (void *)addr + hdr_len;
u32 type = FRU_DUT_MACID;
if (CONFIG_IS_ENABLED(FRU_SC))
type = FRU_SC_MACID;
if (mac->ver == type) {
mac_len = mrc.len - FRU_MULTIREC_MAC_OFFSET;
memcpy(&fru_data.mac.macid, mac->macid, mac_len);
}
}
addr += mrc.len + hdr_len;
} while (!(mrc.type & FRU_LAST_REC));
return 0;
}
int fru_capture(unsigned long addr)
{
struct fru_common_hdr *hdr;
u8 checksum = 0;
unsigned long multirec_addr = addr;
checksum = fru_checksum((u8 *)addr, sizeof(struct fru_common_hdr));
if (checksum) {
printf("%s Common header CRC error\n", __func__);
return -EINVAL;
}
hdr = (struct fru_common_hdr *)addr;
memset((void *)&fru_data, 0, sizeof(fru_data));
memcpy((void *)&fru_data, (void *)hdr,
sizeof(struct fru_common_hdr));
fru_data.captured = true;
if (hdr->off_board) {
addr += fru_cal_area_len(hdr->off_board);
fru_parse_board(addr);
}
env_set_hex("fru_addr", addr);
if (hdr->off_multirec) {
multirec_addr += fru_cal_area_len(hdr->off_multirec);
fru_parse_multirec(multirec_addr);
}
return 0;
}
static int fru_display_board(struct fru_board_data *brd, int verbose)
{
u32 time = 0;
u8 type;
int len;
u8 *data;
static const char * const typecode[] = {
"Binary/Unspecified",
"BCD plus",
"6-bit ASCII",
"8-bit ASCII",
"2-byte UNICODE"
};
static const char * const boardinfo[] = {
"Manufacturer Name",
"Product Name",
"Serial No",
"Part Number",
"File ID",
/* Xilinx spec */
"Revision Number",
};
if (verbose) {
printf("*****BOARD INFO*****\n");
printf("Version:%d\n", fru_version(brd->ver));
printf("Board Area Length:%d\n", fru_cal_area_len(brd->len));
}
if (fru_check_language(brd->lang_code))
return -EINVAL;
time = brd->time[2] << 16 | brd->time[1] << 8 |
brd->time[0];
if (verbose)
printf("Time in Minutes from 0:00hrs 1/1/96: %d\n", time);
data = (u8 *)&brd->manufacturer_type_len;
for (u8 i = 0; i < (sizeof(boardinfo) / sizeof(*boardinfo)); i++) {
len = fru_check_type_len(*data++, brd->lang_code,
&type);
/* Empty record has no len/type filled */
if (!len) {
debug("%s not found\n", boardinfo[i]);
continue;
}
if (type <= FRU_TYPELEN_TYPE_ASCII8 &&
(brd->lang_code == FRU_LANG_CODE_ENGLISH ||
brd->lang_code == FRU_LANG_CODE_ENGLISH_1))
debug("Type code: %s\n", typecode[type]);
else
debug("Type code: %s\n", typecode[type + 1]);
switch (type) {
case FRU_TYPELEN_TYPE_BINARY:
debug("Length: %d\n", len);
printf(" %s: 0x%x\n", boardinfo[i], *data);
break;
case FRU_TYPELEN_TYPE_ASCII8:
debug("Length: %d\n", len);
printf(" %s: %s\n", boardinfo[i], data);
break;
default:
debug("Unsupported type %x\n", type);
}
data += FRU_BOARD_MAX_LEN;
}
return 0;
}
static void fru_display_common_hdr(struct fru_common_hdr *hdr, int verbose)
{
if (!verbose)
return;
printf("*****COMMON HEADER*****\n");
printf("Version:%d\n", fru_version(hdr->version));
if (hdr->off_internal)
printf("Internal Use Area Offset:%d\n",
fru_cal_area_len(hdr->off_internal));
else
printf("*** No Internal Area ***\n");
if (hdr->off_chassis)
printf("Chassis Info Area Offset:%d\n",
fru_cal_area_len(hdr->off_chassis));
else
printf("*** No Chassis Info Area ***\n");
if (hdr->off_board)
printf("Board Area Offset:%d\n",
fru_cal_area_len(hdr->off_board));
else
printf("*** No Board Area ***\n");
if (hdr->off_product)
printf("Product Info Area Offset:%d\n",
fru_cal_area_len(hdr->off_product));
else
printf("*** No Product Info Area ***\n");
if (hdr->off_multirec)
printf("MultiRecord Area Offset:%d\n",
fru_cal_area_len(hdr->off_multirec));
else
printf("*** No MultiRecord Area ***\n");
}
int fru_display(int verbose)
{
if (!fru_data.captured) {
printf("FRU data not available please run fru parse\n");
return -EINVAL;
}
fru_display_common_hdr(&fru_data.hdr, verbose);
return fru_display_board(&fru_data.brd, verbose);
}