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xilinx: cmd: Add support for FRU commands

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This patch adds support for fru commands "fru capture" and "fru display".
The fru capture parses the FRU table present at an address and stores in a
structure for later use. The fru display prints the content of captured
structured in a readable format.

As of now, it supports only common header and board area of FRU. Also, it
supports only English language code and ASCII8/BINARY formats.

fru_data variable is placed to data section because fru parser can be
called very early before bss is initialized. And also information needs to
be shared that's why it is exported via header.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu 2019-04-10 12:38:10 +05:30 committed by Michal Simek
parent 3e315f31cc
commit f1b97b5f18
6 changed files with 414 additions and 0 deletions
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8
board/xilinx/Kconfig
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@ -73,3 +73,11 @@ config ZYNQ_GEM_I2C_MAC_OFFSET
Set the MAC offset for i2C.
endif
config CMD_FRU
bool "FRU information for product"
help
This option enables FRU commands to capture and display FRU
information present in the device. The FRU Information is used
to primarily to provide "inventory" information about the boards
that the FRU Information Device is located on.

3
board/xilinx/common/Makefile
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@ -5,3 +5,6 @@
#
obj-y += board.o
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_CMD_FRU) += fru.o fru_ops.o
endif

73
board/xilinx/common/fru.c Normal file
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@ -0,0 +1,73 @@
// SPDX-License-Identifier: GPL-2.0
/*
* (C) Copyright 2019 - 2020 Xilinx, Inc.
*/
#include <common.h>
#include <command.h>
#include <fdtdec.h>
#include <malloc.h>
#include "fru.h"
static int do_fru_capture(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
unsigned long addr;
char *endp;
if (argc < cmdtp->maxargs)
return CMD_RET_USAGE;
addr = simple_strtoul(argv[2], &endp, 16);
if (*argv[1] == 0 || *endp != 0)
return -1;
return fru_capture(addr);
}
static int do_fru_display(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
fru_display(1);
return CMD_RET_SUCCESS;
}
static struct cmd_tbl cmd_fru_sub[] = {
U_BOOT_CMD_MKENT(capture, 3, 0, do_fru_capture, "", ""),
U_BOOT_CMD_MKENT(display, 2, 0, do_fru_display, "", ""),
};
static int do_fru(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct cmd_tbl *c;
int ret;
if (argc < 2)
return CMD_RET_USAGE;
c = find_cmd_tbl(argv[1], &cmd_fru_sub[0],
ARRAY_SIZE(cmd_fru_sub));
if (!c)
return CMD_RET_USAGE;
ret = c->cmd(c, flag, argc, argv);
return cmd_process_error(c, ret);
}
/***************************************************/
#ifdef CONFIG_SYS_LONGHELP
static char fru_help_text[] =
"capture <addr> - Parse and capture FRU table present at address.\n"
"fru display - Displays content of FRU table that was captured using\n"
" fru capture command\n"
;
#endif
U_BOOT_CMD(
fru, 3, 1, do_fru,
"FRU table info",
fru_help_text
)

66
board/xilinx/common/fru.h Normal file
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@ -0,0 +1,66 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2019 Xilinx, Inc.
* Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
*/
#ifndef __FRU_H
#define __FRU_H
struct fru_common_hdr {
u8 version;
u8 off_internal;
u8 off_chassis;
u8 off_board;
u8 off_product;
u8 off_multirec;
u8 pad;
u8 crc;
};
#define FRU_BOARD_MAX_LEN 32
struct fru_board_data {
u8 ver;
u8 len;
u8 lang_code;
u8 time[3];
u8 manufacturer_type_len;
u8 manufacturer_name[FRU_BOARD_MAX_LEN];
u8 product_name_type_len;
u8 product_name[FRU_BOARD_MAX_LEN];
u8 serial_number_type_len;
u8 serial_number[FRU_BOARD_MAX_LEN];
u8 part_number_type_len;
u8 part_number[FRU_BOARD_MAX_LEN];
u8 file_id_type_len;
u8 file_id[FRU_BOARD_MAX_LEN];
};
struct fru_table {
bool captured;
struct fru_common_hdr hdr;
struct fru_board_data brd;
};
#define FRU_TYPELEN_CODE_MASK 0xC0
#define FRU_TYPELEN_LEN_MASK 0x3F
#define FRU_COMMON_HDR_VER_MASK 0xF
#define FRU_COMMON_HDR_LEN_MULTIPLIER 8
#define FRU_LANG_CODE_ENGLISH 0
#define FRU_LANG_CODE_ENGLISH_1 25
#define FRU_TYPELEN_EOF 0xC1
/* This should be minimum of fields */
#define FRU_BOARD_AREA_TOTAL_FIELDS 5
#define FRU_TYPELEN_TYPE_SHIFT 6
#define FRU_TYPELEN_TYPE_BINARY 0
#define FRU_TYPELEN_TYPE_ASCII8 3
int fru_display(int verbose);
int fru_capture(unsigned long addr);
u8 fru_checksum(u8 *addr, u8 len);
extern struct fru_table fru_data;
#endif /* FRU_H */

263
board/xilinx/common/fru_ops.c Normal file
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@ -0,0 +1,263 @@
// SPDX-License-Identifier: GPL-2.0
/*
* (C) Copyright 2019 - 2020 Xilinx, Inc.
*/
#include <common.h>
#include <cpu_func.h>
#include <env.h>
#include <fdtdec.h>
#include <log.h>
#include <malloc.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;
while (len--) {
checksum += *addr;
addr++;
}
return checksum;
}
static int fru_check_type_len(u8 type_len, u8 language, u8 *type)
{
int len;
if (type_len == FRU_TYPELEN_EOF)
return -EINVAL;
*type = (type_len & FRU_TYPELEN_CODE_MASK) >> FRU_TYPELEN_TYPE_SHIFT;
len = type_len & FRU_TYPELEN_LEN_MASK;
return len;
}
static int fru_parse_board(unsigned long addr)
{
u8 i, type;
int len;
u8 *data, *term;
memcpy(&fru_data.brd.ver, (void *)addr, 6);
addr += 6;
data = (u8 *)&fru_data.brd.manufacturer_type_len;
for (i = 0; ; i++, data += FRU_BOARD_MAX_LEN) {
len = fru_check_type_len(*(u8 *)addr, fru_data.brd.lang_code,
&type);
/*
* Stop cature if it end of fields
*/
if (len == -EINVAL)
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;
}
int fru_capture(unsigned long addr)
{
struct fru_common_hdr *hdr;
u8 checksum = 0;
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;
memcpy((void *)&fru_data.hdr, (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);
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"
};
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);
if (len == -EINVAL) {
printf("**** EOF for Board Area ****\n");
break;
}
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]);
if (!len) {
debug("%s not found\n", boardinfo[i]);
continue;
}
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);
}

1
board/xilinx/zynqmp/MAINTAINERS
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@ -3,6 +3,7 @@ M: Michal Simek <michal.simek@xilinx.com>
S: Maintained
F: arch/arm/dts/zynqmp-*
F: arch/arm/dts/avnet-ultra96*
F: board/xilinx/common/
F: board/xilinx/zynqmp/
F: include/configs/xilinx_zynqmp*
F: configs/xilinx_zynqmp*