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731a1cca55
mmc-utils/mmc_cmds.c
Avri Altman 731a1cca55 mmc-utils: Add fill_switch_cmd handler 
Writing the ext_csd (MMC_SWITCH) is done in several places throught the
code.  Prepare a single handler for that.

This patch has no functional change.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20230625103814.105-2-avri.altman@wdc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2023-08-07 13:08:21 +02:00

3228 lines
80 KiB
C
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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*
* Modified to add field firmware update support,
* those modifications are Copyright (c) 2016 SanDisk Corp.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <stdint.h>
#include <assert.h>
#include <linux/fs.h> /* for BLKGETSIZE */
#include "mmc.h"
#include "mmc_cmds.h"
#include "3rdparty/hmac_sha/hmac_sha2.h"
#ifndef MMC_IOC_MULTI_CMD
#error "mmc-utils needs MMC_IOC_MULTI_CMD support (added in kernel v4.4)"
#endif
#ifndef offsetof
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif
#define WP_BLKS_PER_QUERY 32
#define USER_WP_PERM_PSWD_DIS 0x80
#define USER_WP_CD_PERM_WP_DIS 0x40
#define USER_WP_US_PERM_WP_DIS 0x10
#define USER_WP_US_PWR_WP_DIS 0x08
#define USER_WP_US_PERM_WP_EN 0x04
#define USER_WP_US_PWR_WP_EN 0x01
#define USER_WP_CLEAR (USER_WP_US_PERM_WP_DIS | USER_WP_US_PWR_WP_DIS \
| USER_WP_US_PERM_WP_EN | USER_WP_US_PWR_WP_EN)
#define WPTYPE_NONE 0
#define WPTYPE_TEMP 1
#define WPTYPE_PWRON 2
#define WPTYPE_PERM 3
int read_extcsd(int fd, __u8 *ext_csd)
{
int ret = 0;
struct mmc_ioc_cmd idata;
memset(&idata, 0, sizeof(idata));
memset(ext_csd, 0, sizeof(__u8) * 512);
idata.write_flag = 0;
idata.opcode = MMC_SEND_EXT_CSD;
idata.arg = 0;
idata.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
idata.blksz = 512;
idata.blocks = 1;
mmc_ioc_cmd_set_data(idata, ext_csd);
ret = ioctl(fd, MMC_IOC_CMD, &idata);
if (ret)
perror("ioctl");
return ret;
}
static void fill_switch_cmd(struct mmc_ioc_cmd *cmd, __u8 index, __u8 value)
{
cmd->opcode = MMC_SWITCH;
cmd->write_flag = 1;
cmd->arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) |
(value << 8) | EXT_CSD_CMD_SET_NORMAL;
cmd->flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
}
int write_extcsd_value(int fd, __u8 index, __u8 value, unsigned int timeout_ms)
{
int ret = 0;
struct mmc_ioc_cmd idata = {};
fill_switch_cmd(&idata, index, value);
/* Kernel will set cmd_timeout_ms if 0 is set */
idata.cmd_timeout_ms = timeout_ms;
ret = ioctl(fd, MMC_IOC_CMD, &idata);
if (ret)
perror("ioctl");
return ret;
}
int send_status(int fd, __u32 *response)
{
int ret = 0;
struct mmc_ioc_cmd idata;
memset(&idata, 0, sizeof(idata));
idata.opcode = MMC_SEND_STATUS;
idata.arg = (1 << 16);
idata.flags = MMC_RSP_R1 | MMC_CMD_AC;
ret = ioctl(fd, MMC_IOC_CMD, &idata);
if (ret)
perror("ioctl");
*response = idata.response[0];
return ret;
}
static __u32 get_size_in_blks(int fd)
{
int res;
int size;
res = ioctl(fd, BLKGETSIZE, &size);
if (res) {
fprintf(stderr, "Error getting device size, errno: %d\n",
errno);
perror("");
return -1;
}
return size;
}
static int set_write_protect(int fd, __u32 blk_addr, int on_off)
{
int ret = 0;
struct mmc_ioc_cmd idata;
memset(&idata, 0, sizeof(idata));
idata.write_flag = 1;
if (on_off)
idata.opcode = MMC_SET_WRITE_PROT;
else
idata.opcode = MMC_CLEAR_WRITE_PROT;
idata.arg = blk_addr;
idata.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
ret = ioctl(fd, MMC_IOC_CMD, &idata);
if (ret)
perror("ioctl");
return ret;
}
static int send_write_protect_type(int fd, __u32 blk_addr, __u64 *group_bits)
{
int ret = 0;
struct mmc_ioc_cmd idata;
__u8 buf[8];
__u64 bits = 0;
int x;
memset(&idata, 0, sizeof(idata));
idata.write_flag = 0;
idata.opcode = MMC_SEND_WRITE_PROT_TYPE;
idata.blksz = 8,
idata.blocks = 1,
idata.arg = blk_addr;
idata.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
mmc_ioc_cmd_set_data(idata, buf);
ret = ioctl(fd, MMC_IOC_CMD, &idata);
if (ret)
perror("ioctl");
for (x = 0; x < sizeof(buf); x++)
bits |= (__u64)(buf[7 - x]) << (x * 8);
*group_bits = bits;
return ret;
}
static void print_writeprotect_boot_status(__u8 *ext_csd)
{
__u8 reg;
__u8 ext_csd_rev = ext_csd[EXT_CSD_REV];
/* A43: reserved [174:0] */
if (ext_csd_rev >= 5) {
printf("Boot write protection status registers"
" [BOOT_WP_STATUS]: 0x%02x\n", ext_csd[174]);
reg = ext_csd[EXT_CSD_BOOT_WP];
printf("Boot Area Write protection [BOOT_WP]: 0x%02x\n", reg);
printf(" Power ro locking: ");
if (reg & EXT_CSD_BOOT_WP_B_PWR_WP_DIS)
printf("not possible\n");
else
printf("possible\n");
printf(" Permanent ro locking: ");
if (reg & EXT_CSD_BOOT_WP_B_PERM_WP_DIS)
printf("not possible\n");
else
printf("possible\n");
reg = ext_csd[EXT_CSD_BOOT_WP_STATUS];
printf(" partition 0 ro lock status: ");
if (reg & EXT_CSD_BOOT_WP_S_AREA_0_PERM)
printf("locked permanently\n");
else if (reg & EXT_CSD_BOOT_WP_S_AREA_0_PWR)
printf("locked until next power on\n");
else
printf("not locked\n");
printf(" partition 1 ro lock status: ");
if (reg & EXT_CSD_BOOT_WP_S_AREA_1_PERM)
printf("locked permanently\n");
else if (reg & EXT_CSD_BOOT_WP_S_AREA_1_PWR)
printf("locked until next power on\n");
else
printf("not locked\n");
}
}
static int get_wp_group_size_in_blks(__u8 *ext_csd, __u32 *size)
{
__u8 ext_csd_rev = ext_csd[EXT_CSD_REV];
if ((ext_csd_rev < 5) || (ext_csd[EXT_CSD_ERASE_GROUP_DEF] == 0))
return 1;
*size = ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] *
ext_csd[EXT_CSD_HC_WP_GRP_SIZE] * 1024;
return 0;
}
int do_writeprotect_boot_get(int nargs, char **argv)
{
__u8 ext_csd[512];
int fd, ret;
char *device;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc writeprotect boot get </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
print_writeprotect_boot_status(ext_csd);
close(fd);
return ret;
}
int do_writeprotect_boot_set(int nargs, char **argv)
{
__u8 ext_csd[512], value;
int fd, ret;
char *device;
char *end;
int argi = 1;
int permanent = 0;
int partition = -1;
#ifdef DANGEROUS_COMMANDS_ENABLED
if (!strcmp(argv[argi], "-p")){
permanent = 1;
argi++;
}
#endif
if (nargs < 1 + argi || nargs > 2 + argi) {
fprintf(stderr, "Usage: mmc writeprotect boot set "
#ifdef DANGEROUS_COMMANDS_ENABLED
"[-p] "
#endif
"</path/to/mmcblkX> [0|1]\n");
exit(1);
}
device = argv[argi++];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
if (nargs == 1 + argi) {
partition = strtoul(argv[argi], &end, 0);
if (*end != '\0' || !(partition == 0 || partition == 1)) {
fprintf(stderr, "Invalid partition number (must be 0 or 1): %s\n",
argv[argi]);
exit(1);
}
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
value = ext_csd[EXT_CSD_BOOT_WP];
/*
* If permanent protection is already on for one partition and we're
* trying to enable power-reset protection for the other we need to make
* sure the selection bit for permanent protection still points to the
* former or we'll accidentally permanently protect the latter.
*/
if ((value & EXT_CSD_BOOT_WP_B_PERM_WP_EN) && !permanent) {
if (ext_csd[EXT_CSD_BOOT_WP_STATUS] &
EXT_CSD_BOOT_WP_S_AREA_1_PERM) {
value |= EXT_CSD_BOOT_WP_B_PERM_WP_SEC_SEL;
if (partition != 1)
partition = 0;
} else {
/* PERM_WP_SEC_SEL cleared -> pointing to partition 0 */
if (partition != 0)
partition = 1;
}
}
if (partition != -1) {
value |= EXT_CSD_BOOT_WP_B_SEC_WP_SEL;
if (partition == 1)
value |= permanent ? EXT_CSD_BOOT_WP_B_PERM_WP_SEC_SEL
: EXT_CSD_BOOT_WP_B_PWR_WP_SEC_SEL;
}
value |= permanent ? EXT_CSD_BOOT_WP_B_PERM_WP_EN
: EXT_CSD_BOOT_WP_B_PWR_WP_EN;
ret = write_extcsd_value(fd, EXT_CSD_BOOT_WP, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n",
value, EXT_CSD_BOOT_WP, device);
exit(1);
}
close(fd);
return ret;
}
static char *prot_desc[] = {
"No",
"Temporary",
"Power-on",
"Permanent"
};
static void print_wp_status(__u32 wp_sizeblks, __u32 start_group,
__u32 end_group, int rptype)
{
printf("Write Protect Groups %d-%d (Blocks %d-%d), ",
start_group, end_group,
start_group * wp_sizeblks, ((end_group + 1) * wp_sizeblks) - 1);
printf("%s Write Protection\n", prot_desc[rptype]);
}
int do_writeprotect_user_get(int nargs, char **argv)
{
__u8 ext_csd[512];
int fd, ret;
char *device;
int x;
int y = 0;
__u32 wp_sizeblks;
__u32 dev_sizeblks;
__u32 cnt;
__u64 bits;
__u32 wpblk;
__u32 last_wpblk = 0;
__u32 prot;
__u32 last_prot = -1;
int remain;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc writeprotect user get </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
ret = get_wp_group_size_in_blks(ext_csd, &wp_sizeblks);
if (ret)
exit(1);
printf("Write Protect Group size in blocks/bytes: %d/%d\n",
wp_sizeblks, wp_sizeblks * 512);
dev_sizeblks = get_size_in_blks(fd);
cnt = dev_sizeblks / wp_sizeblks;
for (x = 0; x < cnt; x += WP_BLKS_PER_QUERY) {
ret = send_write_protect_type(fd, x * wp_sizeblks, &bits);
if (ret)
break;
remain = cnt - x;
if (remain > WP_BLKS_PER_QUERY)
remain = WP_BLKS_PER_QUERY;
for (y = 0; y < remain; y++) {
prot = (bits >> (y * 2)) & 0x3;
if (prot != last_prot) {
/* not first time */
if (last_prot != -1) {
wpblk = x + y;
print_wp_status(wp_sizeblks,
last_wpblk,
wpblk - 1,
last_prot);
last_wpblk = wpblk;
}
last_prot = prot;
}
}
}
if (last_wpblk != (x + y - 1))
print_wp_status(wp_sizeblks, last_wpblk, cnt - 1, last_prot);
close(fd);
return ret;
}
int do_writeprotect_user_set(int nargs, char **argv)
{
__u8 ext_csd[512];
int fd, ret;
char *device;
int blk_start;
int blk_cnt;
__u32 wp_blks;
__u8 user_wp;
int x;
int wptype;
if (nargs != 5)
goto usage;
device = argv[4];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
if (!strcmp(argv[1], "none")) {
wptype = WPTYPE_NONE;
} else if (!strcmp(argv[1], "temp")) {
wptype = WPTYPE_TEMP;
} else if (!strcmp(argv[1], "pwron")) {
wptype = WPTYPE_PWRON;
#ifdef DANGEROUS_COMMANDS_ENABLED
} else if (!strcmp(argv[1], "perm")) {
wptype = WPTYPE_PERM;
#endif /* DANGEROUS_COMMANDS_ENABLED */
} else {
fprintf(stderr, "Error, invalid \"type\"\n");
goto usage;
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
ret = get_wp_group_size_in_blks(ext_csd, &wp_blks);
if (ret) {
fprintf(stderr, "Operation not supported for this device\n");
exit(1);
}
blk_start = strtol(argv[2], NULL, 0);
blk_cnt = strtol(argv[3], NULL, 0);
if ((blk_start % wp_blks) || (blk_cnt % wp_blks)) {
fprintf(stderr, "<start block> and <blocks> must be a ");
fprintf(stderr, "multiple of the Write Protect Group (%d)\n",
wp_blks);
exit(1);
}
if (wptype != WPTYPE_NONE) {
user_wp = ext_csd[EXT_CSD_USER_WP];
user_wp &= ~USER_WP_CLEAR;
switch (wptype) {
case WPTYPE_TEMP:
break;
case WPTYPE_PWRON:
user_wp |= USER_WP_US_PWR_WP_EN;
break;
case WPTYPE_PERM:
user_wp |= USER_WP_US_PERM_WP_EN;
break;
}
if (user_wp != ext_csd[EXT_CSD_USER_WP]) {
ret = write_extcsd_value(fd, EXT_CSD_USER_WP, user_wp, 0);
if (ret) {
fprintf(stderr, "Error setting EXT_CSD\n");
exit(1);
}
}
}
for (x = 0; x < blk_cnt; x += wp_blks) {
ret = set_write_protect(fd, blk_start + x,
wptype != WPTYPE_NONE);
if (ret) {
fprintf(stderr,
"Could not set write protect for %s\n", device);
exit(1);
}
}
if (wptype != WPTYPE_NONE) {
ret = write_extcsd_value(fd, EXT_CSD_USER_WP,
ext_csd[EXT_CSD_USER_WP], 0);
if (ret) {
fprintf(stderr, "Error restoring EXT_CSD\n");
exit(1);
}
}
return ret;
usage:
fprintf(stderr,
"Usage: mmc writeprotect user set <type><start block><blocks><device>\n");
exit(1);
}
int do_disable_512B_emulation(int nargs, char **argv)
{
__u8 ext_csd[512], native_sector_size, data_sector_size, wr_rel_param;
int fd, ret;
char *device;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc disable 512B emulation </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
wr_rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
native_sector_size = ext_csd[EXT_CSD_NATIVE_SECTOR_SIZE];
data_sector_size = ext_csd[EXT_CSD_DATA_SECTOR_SIZE];
if (native_sector_size && !data_sector_size &&
(wr_rel_param & EN_REL_WR)) {
ret = write_extcsd_value(fd, EXT_CSD_USE_NATIVE_SECTOR, 1, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
1, EXT_CSD_NATIVE_SECTOR_SIZE, device);
exit(1);
}
printf("MMC disable 512B emulation successful. Now reset the device to switch to 4KB native sector mode.\n");
} else if (native_sector_size && data_sector_size) {
printf("MMC 512B emulation mode is already disabled; doing nothing.\n");
} else {
printf("MMC does not support disabling 512B emulation mode.\n");
}
close(fd);
return ret;
}
int do_write_boot_en(int nargs, char **argv)
{
__u8 ext_csd[512];
__u8 value = 0;
int fd, ret;
char *device;
int boot_area, send_ack;
if (nargs != 4) {
fprintf(stderr, "Usage: mmc bootpart enable <partition_number> <send_ack> </path/to/mmcblkX>\n");
exit(1);
}
/*
* If <send_ack> is 1, the device will send acknowledgment
* pattern "010" to the host when boot operation begins.
* If <send_ack> is 0, it won't.
*/
boot_area = strtol(argv[1], NULL, 10);
send_ack = strtol(argv[2], NULL, 10);
device = argv[3];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
value = ext_csd[EXT_CSD_PART_CONFIG];
switch (boot_area) {
case EXT_CSD_PART_CONFIG_ACC_NONE:
value &= ~(7 << 3);
break;
case EXT_CSD_PART_CONFIG_ACC_BOOT0:
value |= (1 << 3);
value &= ~(3 << 4);
break;
case EXT_CSD_PART_CONFIG_ACC_BOOT1:
value |= (1 << 4);
value &= ~(1 << 3);
value &= ~(1 << 5);
break;
case EXT_CSD_PART_CONFIG_ACC_USER_AREA:
value |= (boot_area << 3);
break;
default:
fprintf(stderr, "Cannot enable the boot area\n");
exit(1);
}
if (send_ack)
value |= EXT_CSD_PART_CONFIG_ACC_ACK;
else
value &= ~EXT_CSD_PART_CONFIG_ACC_ACK;
ret = write_extcsd_value(fd, EXT_CSD_PART_CONFIG, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n",
value, EXT_CSD_PART_CONFIG, device);
exit(1);
}
close(fd);
return ret;
}
int do_boot_bus_conditions_set(int nargs, char **argv)
{
__u8 ext_csd[512];
__u8 value = 0;
int fd, ret;
char *device;
if (nargs != 5) {
fprintf(stderr, "Usage: mmc: bootbus set <boot_mode> <reset_boot_bus_conditions> <boot_bus_width> <device>\n");
exit(1);
}
if (strcmp(argv[1], "single_backward") == 0)
value |= 0;
else if (strcmp(argv[1], "single_hs") == 0)
value |= 0x8;
else if (strcmp(argv[1], "dual") == 0)
value |= 0x10;
else {
fprintf(stderr, "illegal <boot_mode> specified\n");
exit(1);
}
if (strcmp(argv[2], "x1") == 0)
value |= 0;
else if (strcmp(argv[2], "retain") == 0)
value |= 0x4;
else {
fprintf(stderr,
"illegal <reset_boot_bus_conditions> specified\n");
exit(1);
}
if (strcmp(argv[3], "x1") == 0)
value |= 0;
else if (strcmp(argv[3], "x4") == 0)
value |= 0x1;
else if (strcmp(argv[3], "x8") == 0)
value |= 0x2;
else {
fprintf(stderr, "illegal <boot_bus_width> specified\n");
exit(1);
}
device = argv[4];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
printf("Changing ext_csd[BOOT_BUS_CONDITIONS] from 0x%02x to 0x%02x\n",
ext_csd[EXT_CSD_BOOT_BUS_CONDITIONS], value);
ret = write_extcsd_value(fd, EXT_CSD_BOOT_BUS_CONDITIONS, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n",
value, EXT_CSD_BOOT_BUS_CONDITIONS, device);
exit(1);
}
close(fd);
return ret;
}
int do_hwreset(int value, int nargs, char **argv)
{
__u8 ext_csd[512];
int fd, ret;
char *device;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc hwreset enable </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
if ((ext_csd[EXT_CSD_RST_N_FUNCTION] & EXT_CSD_RST_N_EN_MASK) ==
EXT_CSD_HW_RESET_EN) {
fprintf(stderr,
"H/W Reset is already permanently enabled on %s\n",
device);
exit(1);
}
if ((ext_csd[EXT_CSD_RST_N_FUNCTION] & EXT_CSD_RST_N_EN_MASK) ==
EXT_CSD_HW_RESET_DIS) {
fprintf(stderr,
"H/W Reset is already permanently disabled on %s\n",
device);
exit(1);
}
ret = write_extcsd_value(fd, EXT_CSD_RST_N_FUNCTION, value, 0);
if (ret) {
fprintf(stderr,
"Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, EXT_CSD_RST_N_FUNCTION, device);
exit(1);
}
close(fd);
return ret;
}
int do_hwreset_en(int nargs, char **argv)
{
return do_hwreset(EXT_CSD_HW_RESET_EN, nargs, argv);
}
int do_hwreset_dis(int nargs, char **argv)
{
return do_hwreset(EXT_CSD_HW_RESET_DIS, nargs, argv);
}
int do_write_bkops_en(int nargs, char **argv)
{
__u8 ext_csd[512], value = 0;
int fd, ret;
char *device;
char *en_type;
if (nargs != 3) {
fprintf(stderr, "Usage: mmc bkops_en <auto|manual> </path/to/mmcblkX>\n");
exit(1);
}
en_type = argv[1];
device = argv[2];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
if (strcmp(en_type, "auto") == 0) {
if (ext_csd[EXT_CSD_REV] < EXT_CSD_REV_V5_0) {
fprintf(stderr, "%s doesn't support AUTO_EN in the BKOPS_EN register\n", device);
exit(1);
}
ret = write_extcsd_value(fd, EXT_CSD_BKOPS_EN, BKOPS_AUTO_ENABLE, 0);
} else if (strcmp(en_type, "manual") == 0) {
ret = write_extcsd_value(fd, EXT_CSD_BKOPS_EN, BKOPS_MAN_ENABLE, 0);
} else {
fprintf(stderr, "%s invalid mode for BKOPS_EN requested: %s. Valid options: auto or manual\n", en_type, device);
exit(1);
}
if (ret) {
fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, EXT_CSD_BKOPS_EN, device);
exit(1);
}
close(fd);
return ret;
}
int do_status_get(int nargs, char **argv)
{
__u32 response;
int fd, ret;
char *device;
const char *str;
__u8 state;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc status get </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = send_status(fd, &response);
if (ret) {
fprintf(stderr, "Could not read response to SEND_STATUS from %s\n", device);
exit(1);
}
printf("SEND_STATUS response: 0x%08x\n", response);
if (response & R1_OUT_OF_RANGE)
printf("ERROR: ADDRESS_OUT_OF_RANGE\n");
if (response & R1_ADDRESS_ERROR)
printf("ERROR: ADDRESS_MISALIGN\n");
if (response & R1_BLOCK_LEN_ERROR)
printf("ERROR: BLOCK_LEN_ERROR\n");
if (response & R1_ERASE_SEQ_ERROR)
printf("ERROR: ERASE_SEQ_ERROR\n");
if (response & R1_ERASE_PARAM)
printf("ERROR: ERASE_PARAM_ERROR\n");
if (response & R1_WP_VIOLATION)
printf("ERROR: WP_VOILATION\n");
if (response & R1_CARD_IS_LOCKED)
printf("STATUS: DEVICE_IS_LOCKED\n");
if (response & R1_LOCK_UNLOCK_FAILED)
printf("ERROR: LOCK_UNLOCK_IS_FAILED\n");
if (response & R1_COM_CRC_ERROR)
printf("ERROR: COM_CRC_ERROR\n");
if (response & R1_ILLEGAL_COMMAND)
printf("ERROR: ILLEGAL_COMMAND\n");
if (response & R1_CARD_ECC_FAILED)
printf("ERROR: DEVICE_ECC_FAILED\n");
if (response & R1_CC_ERROR)
printf("ERROR: CC_ERROR\n");
if (response & R1_ERROR)
printf("ERROR: ERROR\n");
if (response & R1_CID_CSD_OVERWRITE)
printf("ERROR: CID/CSD OVERWRITE\n");
if (response & R1_WP_ERASE_SKIP)
printf("ERROR: WP_ERASE_SKIP\n");
if (response & R1_ERASE_RESET)
printf("ERROR: ERASE_RESET\n");
state = (response >> 9) & 0xF;
switch (state) {
case 0:
str = "IDLE";
break;
case 1:
str = "READY";
break;
case 2:
str = "IDENT";
break;
case 3:
str = "STDBY";
break;
case 4:
str = "TRANS";
break;
case 5:
str = "DATA";
break;
case 6:
str = "RCV";
break;
case 7:
str = "PRG";
break;
case 8:
str = "DIS";
break;
case 9:
str = "BTST";
break;
case 10:
str = "SLP";
break;
default:
printf("Attention : Device state is INVALID: Kindly check the Response\n");
goto out_free;
}
printf("DEVICE STATE: %s\n", str);
if (response & R1_READY_FOR_DATA)
printf("STATUS: READY_FOR_DATA\n");
if (response & R1_SWITCH_ERROR)
printf("ERROR: SWITCH_ERROR\n");
if (response & R1_EXCEPTION_EVENT)
printf("STATUS: EXCEPTION_EVENT\n"); /* Check EXCEPTION_EVENTS_STATUS fields for further actions */
if (response & R1_APP_CMD)
printf("STATUS: APP_CMD\n");
out_free:
close(fd);
return ret;
}
unsigned int get_sector_count(__u8 *ext_csd)
{
return (ext_csd[EXT_CSD_SEC_COUNT_3] << 24) |
(ext_csd[EXT_CSD_SEC_COUNT_2] << 16) |
(ext_csd[EXT_CSD_SEC_COUNT_1] << 8) |
ext_csd[EXT_CSD_SEC_COUNT_0];
}
int is_blockaddresed(__u8 *ext_csd)
{
unsigned int sectors = get_sector_count(ext_csd);
/* over 2GiB devices are block-addressed */
return (sectors > (2u * 1024 * 1024 * 1024) / 512);
}
unsigned int get_hc_wp_grp_size(__u8 *ext_csd)
{
return ext_csd[221];
}
unsigned int get_hc_erase_grp_size(__u8 *ext_csd)
{
return ext_csd[224];
}
int set_partitioning_setting_completed(int dry_run, const char * const device,
int fd)
{
int ret;
if (dry_run == 1) {
fprintf(stderr, "NOT setting PARTITION_SETTING_COMPLETED\n");
fprintf(stderr, "These changes will not take effect neither "
"now nor after a power cycle\n");
return 1;
} else if (dry_run == 2) {
printf("-c given, expecting more partition settings before "
"writing PARTITION_SETTING_COMPLETED\n");
return 0;
}
fprintf(stderr, "setting OTP PARTITION_SETTING_COMPLETED!\n");
ret = write_extcsd_value(fd, EXT_CSD_PARTITION_SETTING_COMPLETED, 0x1, 0);
if (ret) {
fprintf(stderr, "Could not write 0x1 to "
"EXT_CSD[%d] in %s\n",
EXT_CSD_PARTITION_SETTING_COMPLETED, device);
return 1;
}
__u32 response;
ret = send_status(fd, &response);
if (ret) {
fprintf(stderr, "Could not get response to SEND_STATUS "
"from %s\n", device);
return 1;
}
if (response & R1_SWITCH_ERROR) {
fprintf(stderr, "Setting OTP PARTITION_SETTING_COMPLETED "
"failed on %s\n", device);
return 1;
}
fprintf(stderr, "Setting OTP PARTITION_SETTING_COMPLETED on "
"%s SUCCESS\n", device);
fprintf(stderr, "Device power cycle needed for settings to "
"take effect.\n"
"Confirm that PARTITION_SETTING_COMPLETED bit is set "
"using 'extcsd read' after power cycle\n");
return 0;
}
int check_enhanced_area_total_limit(const char * const device, int fd)
{
__u8 ext_csd[512];
__u32 regl;
unsigned long max_enh_area_sz, user_area_sz, enh_area_sz = 0;
unsigned long gp4_part_sz, gp3_part_sz, gp2_part_sz, gp1_part_sz;
unsigned long total_sz, total_gp_user_sz;
unsigned int wp_sz, erase_sz;
int ret;
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
wp_sz = get_hc_wp_grp_size(ext_csd);
erase_sz = get_hc_erase_grp_size(ext_csd);
regl = (ext_csd[EXT_CSD_GP_SIZE_MULT_4_2] << 16) |
(ext_csd[EXT_CSD_GP_SIZE_MULT_4_1] << 8) |
ext_csd[EXT_CSD_GP_SIZE_MULT_4_0];
gp4_part_sz = 512l * regl * erase_sz * wp_sz;
if (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & EXT_CSD_ENH_4) {
enh_area_sz += gp4_part_sz;
printf("Enhanced GP4 Partition Size [GP_SIZE_MULT_4]: 0x%06x\n", regl);
printf(" i.e. %lu KiB\n", gp4_part_sz);
}
regl = (ext_csd[EXT_CSD_GP_SIZE_MULT_3_2] << 16) |
(ext_csd[EXT_CSD_GP_SIZE_MULT_3_1] << 8) |
ext_csd[EXT_CSD_GP_SIZE_MULT_3_0];
gp3_part_sz = 512l * regl * erase_sz * wp_sz;
if (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & EXT_CSD_ENH_3) {
enh_area_sz += gp3_part_sz;
printf("Enhanced GP3 Partition Size [GP_SIZE_MULT_3]: 0x%06x\n", regl);
printf(" i.e. %lu KiB\n", gp3_part_sz);
}
regl = (ext_csd[EXT_CSD_GP_SIZE_MULT_2_2] << 16) |
(ext_csd[EXT_CSD_GP_SIZE_MULT_2_1] << 8) |
ext_csd[EXT_CSD_GP_SIZE_MULT_2_0];
gp2_part_sz = 512l * regl * erase_sz * wp_sz;
if (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & EXT_CSD_ENH_2) {
enh_area_sz += gp2_part_sz;
printf("Enhanced GP2 Partition Size [GP_SIZE_MULT_2]: 0x%06x\n", regl);
printf(" i.e. %lu KiB\n", gp2_part_sz);
}
regl = (ext_csd[EXT_CSD_GP_SIZE_MULT_1_2] << 16) |
(ext_csd[EXT_CSD_GP_SIZE_MULT_1_1] << 8) |
ext_csd[EXT_CSD_GP_SIZE_MULT_1_0];
gp1_part_sz = 512l * regl * erase_sz * wp_sz;
if (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & EXT_CSD_ENH_1) {
enh_area_sz += gp1_part_sz;
printf("Enhanced GP1 Partition Size [GP_SIZE_MULT_1]: 0x%06x\n", regl);
printf(" i.e. %lu KiB\n", gp1_part_sz);
}
regl = (ext_csd[EXT_CSD_ENH_SIZE_MULT_2] << 16) |
(ext_csd[EXT_CSD_ENH_SIZE_MULT_1] << 8) |
ext_csd[EXT_CSD_ENH_SIZE_MULT_0];
user_area_sz = 512l * regl * erase_sz * wp_sz;
if (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & EXT_CSD_ENH_USR) {
enh_area_sz += user_area_sz;
printf("Enhanced User Data Area Size [ENH_SIZE_MULT]: 0x%06x\n", regl);
printf(" i.e. %lu KiB\n", user_area_sz);
}
regl = (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT_2] << 16) |
(ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT_1] << 8) |
ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT_0];
max_enh_area_sz = 512l * regl * erase_sz * wp_sz;
printf("Max Enhanced Area Size [MAX_ENH_SIZE_MULT]: 0x%06x\n", regl);
printf(" i.e. %lu KiB\n", max_enh_area_sz);
if (enh_area_sz > max_enh_area_sz) {
fprintf(stderr,
"Programmed total enhanced size %lu KiB cannot exceed max enhanced area %lu KiB %s\n",
enh_area_sz, max_enh_area_sz, device);
return 1;
}
total_sz = get_sector_count(ext_csd) / 2;
total_gp_user_sz = gp4_part_sz + gp3_part_sz + gp2_part_sz +
gp1_part_sz + user_area_sz;
if (total_gp_user_sz > total_sz) {
fprintf(stderr,
"requested total partition size %lu KiB cannot exceed card capacity %lu KiB %s\n",
total_gp_user_sz, total_sz, device);
return 1;
}
return 0;
}
int do_create_gp_partition(int nargs, char **argv)
{
__u8 value;
__u8 ext_csd[512];
__u8 address;
int fd, ret;
char *device;
int dry_run = 1;
int partition, enh_attr, ext_attr;
unsigned int length_kib, gp_size_mult;
unsigned long align;
if (nargs != 7) {
fprintf(stderr, "Usage: mmc gp create <-y|-n|-c> <length KiB> <partition> <enh_attr> <ext_attr> </path/to/mmcblkX>\n");
exit(1);
}
if (!strcmp("-y", argv[1])) {
dry_run = 0;
} else if (!strcmp("-c", argv[1])) {
dry_run = 2;
}
length_kib = strtol(argv[2], NULL, 10);
partition = strtol(argv[3], NULL, 10);
enh_attr = strtol(argv[4], NULL, 10);
ext_attr = strtol(argv[5], NULL, 10);
device = argv[6];
if (partition < 1 || partition > 4) {
printf("Invalid gp partition number; valid range [1-4].\n");
exit(1);
}
if (enh_attr && ext_attr) {
printf("Not allowed to set both enhanced attribute and extended attribute\n");
exit(1);
}
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
/* assert not PARTITION_SETTING_COMPLETED */
if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED]) {
printf(" Device is already partitioned\n");
exit(1);
}
align = 512l * get_hc_wp_grp_size(ext_csd) * get_hc_erase_grp_size(ext_csd);
gp_size_mult = (length_kib + align/2l) / align;
/* set EXT_CSD_ERASE_GROUP_DEF bit 0 */
ret = write_extcsd_value(fd, EXT_CSD_ERASE_GROUP_DEF, 0x1, 0);
if (ret) {
fprintf(stderr, "Could not write 0x1 to EXT_CSD[%d] in %s\n",
EXT_CSD_ERASE_GROUP_DEF, device);
exit(1);
}
value = (gp_size_mult >> 16) & 0xff;
address = EXT_CSD_GP_SIZE_MULT_1_2 + (partition - 1) * 3;
ret = write_extcsd_value(fd, address, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, address, device);
exit(1);
}
value = (gp_size_mult >> 8) & 0xff;
address = EXT_CSD_GP_SIZE_MULT_1_1 + (partition - 1) * 3;
ret = write_extcsd_value(fd, address, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, address, device);
exit(1);
}
value = gp_size_mult & 0xff;
address = EXT_CSD_GP_SIZE_MULT_1_0 + (partition - 1) * 3;
ret = write_extcsd_value(fd, address, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, address, device);
exit(1);
}
value = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
if (enh_attr)
value |= (1 << partition);
else
value &= ~(1 << partition);
ret = write_extcsd_value(fd, EXT_CSD_PARTITIONS_ATTRIBUTE, value, 0);
if (ret) {
fprintf(stderr, "Could not write EXT_CSD_ENH_%x to EXT_CSD[%d] in %s\n",
partition, EXT_CSD_PARTITIONS_ATTRIBUTE, device);
exit(1);
}
address = EXT_CSD_EXT_PARTITIONS_ATTRIBUTE_0 + (partition - 1) / 2;
value = ext_csd[address];
if (ext_attr)
value |= (ext_attr << (4 * ((partition - 1) % 2)));
else
value &= (0xF << (4 * ((partition % 2))));
ret = write_extcsd_value(fd, address, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%x to EXT_CSD[%d] in %s\n",
value, address, device);
exit(1);
}
ret = check_enhanced_area_total_limit(device, fd);
if (ret)
exit(1);
if (set_partitioning_setting_completed(dry_run, device, fd))
exit(1);
return 0;
}
int do_enh_area_set(int nargs, char **argv)
{
__u8 value;
__u8 ext_csd[512];
int fd, ret;
char *device;
int dry_run = 1;
unsigned int start_kib, length_kib, enh_start_addr, enh_size_mult;
unsigned long align;
if (nargs != 5) {
fprintf(stderr, "Usage: mmc enh_area set <-y|-n|-c> <start KiB> <length KiB> </path/to/mmcblkX>\n");
exit(1);
}
if (!strcmp("-y", argv[1])) {
dry_run = 0;
} else if (!strcmp("-c", argv[1])) {
dry_run = 2;
}
start_kib = strtol(argv[2], NULL, 10);
length_kib = strtol(argv[3], NULL, 10);
device = argv[4];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
/* assert ENH_ATTRIBUTE_EN */
if (!(ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & EXT_CSD_ENH_ATTRIBUTE_EN))
{
printf(" Device cannot have enhanced tech.\n");
exit(1);
}
/* assert not PARTITION_SETTING_COMPLETED */
if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED])
{
printf(" Device is already partitioned\n");
exit(1);
}
align = 512l * get_hc_wp_grp_size(ext_csd) * get_hc_erase_grp_size(ext_csd);
enh_size_mult = (length_kib + align/2l) / align;
enh_start_addr = start_kib * (1024 / (is_blockaddresed(ext_csd) ? 512 : 1));
enh_start_addr /= align;
enh_start_addr *= align;
/* set EXT_CSD_ERASE_GROUP_DEF bit 0 */
ret = write_extcsd_value(fd, EXT_CSD_ERASE_GROUP_DEF, 0x1, 0);
if (ret) {
fprintf(stderr, "Could not write 0x1 to "
"EXT_CSD[%d] in %s\n",
EXT_CSD_ERASE_GROUP_DEF, device);
exit(1);
}
/* write to ENH_START_ADDR and ENH_SIZE_MULT and PARTITIONS_ATTRIBUTE's ENH_USR bit */
value = (enh_start_addr >> 24) & 0xff;
ret = write_extcsd_value(fd, EXT_CSD_ENH_START_ADDR_3, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n", value,
EXT_CSD_ENH_START_ADDR_3, device);
exit(1);
}
value = (enh_start_addr >> 16) & 0xff;
ret = write_extcsd_value(fd, EXT_CSD_ENH_START_ADDR_2, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n", value,
EXT_CSD_ENH_START_ADDR_2, device);
exit(1);
}
value = (enh_start_addr >> 8) & 0xff;
ret = write_extcsd_value(fd, EXT_CSD_ENH_START_ADDR_1, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n", value,
EXT_CSD_ENH_START_ADDR_1, device);
exit(1);
}
value = enh_start_addr & 0xff;
ret = write_extcsd_value(fd, EXT_CSD_ENH_START_ADDR_0, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n", value,
EXT_CSD_ENH_START_ADDR_0, device);
exit(1);
}
value = (enh_size_mult >> 16) & 0xff;
ret = write_extcsd_value(fd, EXT_CSD_ENH_SIZE_MULT_2, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n", value,
EXT_CSD_ENH_SIZE_MULT_2, device);
exit(1);
}
value = (enh_size_mult >> 8) & 0xff;
ret = write_extcsd_value(fd, EXT_CSD_ENH_SIZE_MULT_1, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n", value,
EXT_CSD_ENH_SIZE_MULT_1, device);
exit(1);
}
value = enh_size_mult & 0xff;
ret = write_extcsd_value(fd, EXT_CSD_ENH_SIZE_MULT_0, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to "
"EXT_CSD[%d] in %s\n", value,
EXT_CSD_ENH_SIZE_MULT_0, device);
exit(1);
}
value = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] | EXT_CSD_ENH_USR;
ret = write_extcsd_value(fd, EXT_CSD_PARTITIONS_ATTRIBUTE, value, 0);
if (ret) {
fprintf(stderr, "Could not write EXT_CSD_ENH_USR to "
"EXT_CSD[%d] in %s\n",
EXT_CSD_PARTITIONS_ATTRIBUTE, device);
exit(1);
}
ret = check_enhanced_area_total_limit(device, fd);
if (ret)
exit(1);
printf("Done setting ENH_USR area on %s\n", device);
if (set_partitioning_setting_completed(dry_run, device, fd))
exit(1);
return 0;
}
int do_write_reliability_set(int nargs, char **argv)
{
__u8 value;
__u8 ext_csd[512];
int fd, ret;
int dry_run = 1;
int partition;
char *device;
if (nargs != 4) {
fprintf(stderr,"Usage: mmc write_reliability set <-y|-n|-c> <partition> </path/to/mmcblkX>\n");
exit(1);
}
if (!strcmp("-y", argv[1])) {
dry_run = 0;
} else if (!strcmp("-c", argv[1])) {
dry_run = 2;
}
partition = strtol(argv[2], NULL, 10);
device = argv[3];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
/* assert not PARTITION_SETTING_COMPLETED */
if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED])
{
printf(" Device is already partitioned\n");
exit(1);
}
/* assert HS_CTRL_REL */
if (!(ext_csd[EXT_CSD_WR_REL_PARAM] & HS_CTRL_REL)) {
printf("Cannot set write reliability parameters, WR_REL_SET is "
"read-only\n");
exit(1);
}
value = ext_csd[EXT_CSD_WR_REL_SET] | (1<<partition);
ret = write_extcsd_value(fd, EXT_CSD_WR_REL_SET, value, 0);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, EXT_CSD_WR_REL_SET, device);
exit(1);
}
printf("Done setting EXT_CSD_WR_REL_SET to 0x%02x on %s\n",
value, device);
if (set_partitioning_setting_completed(dry_run, device, fd))
exit(1);
return 0;
}
int do_read_extcsd(int nargs, char **argv)
{
__u8 ext_csd[512], ext_csd_rev, reg;
__u32 regl;
int fd, ret;
char *device;
const char *str;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc extcsd read </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
ext_csd_rev = ext_csd[EXT_CSD_REV];
switch (ext_csd_rev) {
case 8:
str = "5.1";
break;
case 7:
str = "5.0";
break;
case 6:
str = "4.5";
break;
case 5:
str = "4.41";
break;
case 3:
str = "4.3";
break;
case 2:
str = "4.2";
break;
case 1:
str = "4.1";
break;
case 0:
str = "4.0";
break;
default:
goto out_free;
}
printf("=============================================\n");
printf(" Extended CSD rev 1.%d (MMC %s)\n", ext_csd_rev, str);
printf("=============================================\n\n");
if (ext_csd_rev < 3)
goto out_free; /* No ext_csd */
/* Parse the Extended CSD registers.
* Reserved bit should be read as "0" in case of spec older
* than A441.
*/
reg = ext_csd[EXT_CSD_S_CMD_SET];
printf("Card Supported Command sets [S_CMD_SET: 0x%02x]\n", reg);
if (!reg)
printf(" - Standard MMC command sets\n");
reg = ext_csd[EXT_CSD_HPI_FEATURE];
printf("HPI Features [HPI_FEATURE: 0x%02x]: ", reg);
if (reg & EXT_CSD_HPI_SUPP) {
if (reg & EXT_CSD_HPI_IMPL)
printf("implementation based on CMD12\n");
else
printf("implementation based on CMD13\n");
}
printf("Background operations support [BKOPS_SUPPORT: 0x%02x]\n",
ext_csd[502]);
if (ext_csd_rev >= 6) {
printf("Max Packet Read Cmd [MAX_PACKED_READS: 0x%02x]\n",
ext_csd[501]);
printf("Max Packet Write Cmd [MAX_PACKED_WRITES: 0x%02x]\n",
ext_csd[500]);
printf("Data TAG support [DATA_TAG_SUPPORT: 0x%02x]\n",
ext_csd[499]);
printf("Data TAG Unit Size [TAG_UNIT_SIZE: 0x%02x]\n",
ext_csd[498]);
printf("Tag Resources Size [TAG_RES_SIZE: 0x%02x]\n",
ext_csd[497]);
printf("Context Management Capabilities"
" [CONTEXT_CAPABILITIES: 0x%02x]\n", ext_csd[496]);
printf("Large Unit Size [LARGE_UNIT_SIZE_M1: 0x%02x]\n",
ext_csd[495]);
printf("Extended partition attribute support"
" [EXT_SUPPORT: 0x%02x]\n", ext_csd[494]);
printf("Generic CMD6 Timer [GENERIC_CMD6_TIME: 0x%02x]\n",
ext_csd[248]);
printf("Power off notification [POWER_OFF_LONG_TIME: 0x%02x]\n",
ext_csd[247]);
printf("Cache Size [CACHE_SIZE] is %d KiB\n",
(ext_csd[249] << 0 | (ext_csd[250] << 8) |
(ext_csd[251] << 16) | (ext_csd[252] << 24)) / 8);
}
/* A441: Reserved [501:247]
A43: reserved [246:229] */
if (ext_csd_rev >= 5) {
printf("Background operations status"
" [BKOPS_STATUS: 0x%02x]\n", ext_csd[246]);
/* CORRECTLY_PRG_SECTORS_NUM [245:242] TODO */
printf("1st Initialisation Time after programmed sector"
" [INI_TIMEOUT_AP: 0x%02x]\n", ext_csd[241]);
/* A441: reserved [240] */
printf("Power class for 52MHz, DDR at 3.6V"
" [PWR_CL_DDR_52_360: 0x%02x]\n", ext_csd[239]);
printf("Power class for 52MHz, DDR at 1.95V"
" [PWR_CL_DDR_52_195: 0x%02x]\n", ext_csd[238]);
/* A441: reserved [237-236] */
if (ext_csd_rev >= 6) {
printf("Power class for 200MHz at 3.6V"
" [PWR_CL_200_360: 0x%02x]\n", ext_csd[237]);
printf("Power class for 200MHz, at 1.95V"
" [PWR_CL_200_195: 0x%02x]\n", ext_csd[236]);
}
printf("Minimum Performance for 8bit at 52MHz in DDR mode:\n");
printf(" [MIN_PERF_DDR_W_8_52: 0x%02x]\n", ext_csd[235]);
printf(" [MIN_PERF_DDR_R_8_52: 0x%02x]\n", ext_csd[234]);
/* A441: reserved [233] */
printf("TRIM Multiplier [TRIM_MULT: 0x%02x]\n", ext_csd[232]);
printf("Secure Feature support [SEC_FEATURE_SUPPORT: 0x%02x]\n",
ext_csd[231]);
}
if (ext_csd_rev == 5) { /* Obsolete in 4.5 */
printf("Secure Erase Multiplier [SEC_ERASE_MULT: 0x%02x]\n",
ext_csd[230]);
printf("Secure TRIM Multiplier [SEC_TRIM_MULT: 0x%02x]\n",
ext_csd[229]);
}
reg = ext_csd[EXT_CSD_BOOT_INFO];
printf("Boot Information [BOOT_INFO: 0x%02x]\n", reg);
if (reg & EXT_CSD_BOOT_INFO_ALT)
printf(" Device supports alternative boot method\n");
if (reg & EXT_CSD_BOOT_INFO_DDR_DDR)
printf(" Device supports dual data rate during boot\n");
if (reg & EXT_CSD_BOOT_INFO_HS_MODE)
printf(" Device supports high speed timing during boot\n");
/* A441/A43: reserved [227] */
printf("Boot partition size [BOOT_SIZE_MULTI: 0x%02x]\n", ext_csd[226]);
printf("Access size [ACC_SIZE: 0x%02x]\n", ext_csd[225]);
reg = get_hc_erase_grp_size(ext_csd);
printf("High-capacity erase unit size [HC_ERASE_GRP_SIZE: 0x%02x]\n",
reg);
printf(" i.e. %u KiB\n", 512 * reg);
printf("High-capacity erase timeout [ERASE_TIMEOUT_MULT: 0x%02x]\n",
ext_csd[223]);
printf("Reliable write sector count [REL_WR_SEC_C: 0x%02x]\n",
ext_csd[222]);
reg = get_hc_wp_grp_size(ext_csd);
printf("High-capacity W protect group size [HC_WP_GRP_SIZE: 0x%02x]\n",
reg);
printf(" i.e. %lu KiB\n", 512l * get_hc_erase_grp_size(ext_csd) * reg);
printf("Sleep current (VCC) [S_C_VCC: 0x%02x]\n", ext_csd[220]);
printf("Sleep current (VCCQ) [S_C_VCCQ: 0x%02x]\n", ext_csd[219]);
/* A441/A43: reserved [218] */
printf("Sleep/awake timeout [S_A_TIMEOUT: 0x%02x]\n", ext_csd[217]);
/* A441/A43: reserved [216] */
unsigned int sectors = get_sector_count(ext_csd);
printf("Sector Count [SEC_COUNT: 0x%08x]\n", sectors);
if (is_blockaddresed(ext_csd))
printf(" Device is block-addressed\n");
else
printf(" Device is NOT block-addressed\n");
/* A441/A43: reserved [211] */
printf("Minimum Write Performance for 8bit:\n");
printf(" [MIN_PERF_W_8_52: 0x%02x]\n", ext_csd[210]);
printf(" [MIN_PERF_R_8_52: 0x%02x]\n", ext_csd[209]);
printf(" [MIN_PERF_W_8_26_4_52: 0x%02x]\n", ext_csd[208]);
printf(" [MIN_PERF_R_8_26_4_52: 0x%02x]\n", ext_csd[207]);
printf("Minimum Write Performance for 4bit:\n");
printf(" [MIN_PERF_W_4_26: 0x%02x]\n", ext_csd[206]);
printf(" [MIN_PERF_R_4_26: 0x%02x]\n", ext_csd[205]);
/* A441/A43: reserved [204] */
printf("Power classes registers:\n");
printf(" [PWR_CL_26_360: 0x%02x]\n", ext_csd[203]);
printf(" [PWR_CL_52_360: 0x%02x]\n", ext_csd[202]);
printf(" [PWR_CL_26_195: 0x%02x]\n", ext_csd[201]);
printf(" [PWR_CL_52_195: 0x%02x]\n", ext_csd[200]);
/* A43: reserved [199:198] */
if (ext_csd_rev >= 5) {
printf("Partition switching timing "
"[PARTITION_SWITCH_TIME: 0x%02x]\n", ext_csd[199]);
printf("Out-of-interrupt busy timing"
" [OUT_OF_INTERRUPT_TIME: 0x%02x]\n", ext_csd[198]);
}
/* A441/A43: reserved [197] [195] [193] [190] [188]
* [186] [184] [182] [180] [176] */
if (ext_csd_rev >= 6)
printf("I/O Driver Strength [DRIVER_STRENGTH: 0x%02x]\n",
ext_csd[197]);
/* DEVICE_TYPE in A45, CARD_TYPE in A441 */
reg = ext_csd[196];
printf("Card Type [CARD_TYPE: 0x%02x]\n", reg);
if (reg & 0x80) printf(" HS400 Dual Data Rate eMMC @200MHz 1.2VI/O\n");
if (reg & 0x40) printf(" HS400 Dual Data Rate eMMC @200MHz 1.8VI/O\n");
if (reg & 0x20) printf(" HS200 Single Data Rate eMMC @200MHz 1.2VI/O\n");
if (reg & 0x10) printf(" HS200 Single Data Rate eMMC @200MHz 1.8VI/O\n");
if (reg & 0x08) printf(" HS Dual Data Rate eMMC @52MHz 1.2VI/O\n");
if (reg & 0x04) printf(" HS Dual Data Rate eMMC @52MHz 1.8V or 3VI/O\n");
if (reg & 0x02) printf(" HS eMMC @52MHz - at rated device voltage(s)\n");
if (reg & 0x01) printf(" HS eMMC @26MHz - at rated device voltage(s)\n");
printf("CSD structure version [CSD_STRUCTURE: 0x%02x]\n", ext_csd[194]);
/* ext_csd_rev = ext_csd[EXT_CSD_REV] (already done!!!) */
printf("Command set [CMD_SET: 0x%02x]\n", ext_csd[191]);
printf("Command set revision [CMD_SET_REV: 0x%02x]\n", ext_csd[189]);
printf("Power class [POWER_CLASS: 0x%02x]\n", ext_csd[187]);
printf("High-speed interface timing [HS_TIMING: 0x%02x]\n",
ext_csd[185]);
if (ext_csd_rev >= 8)
printf("Enhanced Strobe mode [STROBE_SUPPORT: 0x%02x]\n",
ext_csd[184]);
/* bus_width: ext_csd[183] not readable */
printf("Erased memory content [ERASED_MEM_CONT: 0x%02x]\n",
ext_csd[181]);
reg = ext_csd[EXT_CSD_BOOT_CFG];
printf("Boot configuration bytes [PARTITION_CONFIG: 0x%02x]\n", reg);
switch ((reg & EXT_CSD_BOOT_CFG_EN)>>3) {
case 0x0:
printf(" Not boot enable\n");
break;
case 0x1:
printf(" Boot Partition 1 enabled\n");
break;
case 0x2:
printf(" Boot Partition 2 enabled\n");
break;
case 0x7:
printf(" User Area Enabled for boot\n");
break;
}
switch (reg & EXT_CSD_BOOT_CFG_ACC) {
case 0x0:
printf(" No access to boot partition\n");
break;
case 0x1:
printf(" R/W Boot Partition 1\n");
break;
case 0x2:
printf(" R/W Boot Partition 2\n");
break;
case 0x3:
printf(" R/W Replay Protected Memory Block (RPMB)\n");
break;
default:
printf(" Access to General Purpose partition %d\n",
(reg & EXT_CSD_BOOT_CFG_ACC) - 3);
break;
}
printf("Boot config protection [BOOT_CONFIG_PROT: 0x%02x]\n",
ext_csd[178]);
printf("Boot bus Conditions [BOOT_BUS_CONDITIONS: 0x%02x]\n",
ext_csd[177]);
printf("High-density erase group definition"
" [ERASE_GROUP_DEF: 0x%02x]\n", ext_csd[EXT_CSD_ERASE_GROUP_DEF]);
print_writeprotect_boot_status(ext_csd);
if (ext_csd_rev >= 5) {
/* A441]: reserved [172] */
printf("User area write protection register"
" [USER_WP]: 0x%02x\n", ext_csd[171]);
/* A441]: reserved [170] */
printf("FW configuration [FW_CONFIG]: 0x%02x\n", ext_csd[169]);
printf("RPMB Size [RPMB_SIZE_MULT]: 0x%02x\n", ext_csd[168]);
reg = ext_csd[EXT_CSD_WR_REL_SET];
const char * const fast = "existing data is at risk if a power "
"failure occurs during a write operation";
const char * const reliable = "the device protects existing "
"data if a power failure occurs during a write "
"operation";
printf("Write reliability setting register"
" [WR_REL_SET]: 0x%02x\n", reg);
printf(" user area: %s\n", (reg & (1<<0)) ? reliable : fast);
int i;
for (i = 1; i <= 4; i++) {
printf(" partition %d: %s\n", i,
(reg & (1<<i)) ? reliable : fast);
}
reg = ext_csd[EXT_CSD_WR_REL_PARAM];
printf("Write reliability parameter register"
" [WR_REL_PARAM]: 0x%02x\n", reg);
if (reg & 0x01)
printf(" Device supports writing EXT_CSD_WR_REL_SET\n");
if (reg & 0x04)
printf(" Device supports the enhanced def. of reliable "
"write\n");
/* sanitize_start ext_csd[165]]: not readable
* bkops_start ext_csd[164]]: only writable */
printf("Enable background operations handshake"
" [BKOPS_EN]: 0x%02x\n", ext_csd[163]);
printf("H/W reset function"
" [RST_N_FUNCTION]: 0x%02x\n", ext_csd[162]);
printf("HPI management [HPI_MGMT]: 0x%02x\n", ext_csd[161]);
reg = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
printf("Partitioning Support [PARTITIONING_SUPPORT]: 0x%02x\n",
reg);
if (reg & EXT_CSD_PARTITIONING_EN)
printf(" Device support partitioning feature\n");
else
printf(" Device NOT support partitioning feature\n");
if (reg & EXT_CSD_ENH_ATTRIBUTE_EN)
printf(" Device can have enhanced tech.\n");
else
printf(" Device cannot have enhanced tech.\n");
regl = (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT_2] << 16) |
(ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT_1] << 8) |
ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT_0];
printf("Max Enhanced Area Size [MAX_ENH_SIZE_MULT]: 0x%06x\n",
regl);
unsigned int wp_sz = get_hc_wp_grp_size(ext_csd);
unsigned int erase_sz = get_hc_erase_grp_size(ext_csd);
printf(" i.e. %lu KiB\n", 512l * regl * wp_sz * erase_sz);
printf("Partitions attribute [PARTITIONS_ATTRIBUTE]: 0x%02x\n",
ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE]);
reg = ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED];
printf("Partitioning Setting"
" [PARTITION_SETTING_COMPLETED]: 0x%02x\n",
reg);
if (reg)
printf(" Device partition setting complete\n");
else
printf(" Device partition setting NOT complete\n");
printf("General Purpose Partition Size\n"
" [GP_SIZE_MULT_4]: 0x%06x\n", (ext_csd[154] << 16) |
(ext_csd[153] << 8) | ext_csd[152]);
printf(" [GP_SIZE_MULT_3]: 0x%06x\n", (ext_csd[151] << 16) |
(ext_csd[150] << 8) | ext_csd[149]);
printf(" [GP_SIZE_MULT_2]: 0x%06x\n", (ext_csd[148] << 16) |
(ext_csd[147] << 8) | ext_csd[146]);
printf(" [GP_SIZE_MULT_1]: 0x%06x\n", (ext_csd[145] << 16) |
(ext_csd[144] << 8) | ext_csd[143]);
regl = (ext_csd[EXT_CSD_ENH_SIZE_MULT_2] << 16) |
(ext_csd[EXT_CSD_ENH_SIZE_MULT_1] << 8) |
ext_csd[EXT_CSD_ENH_SIZE_MULT_0];
printf("Enhanced User Data Area Size"
" [ENH_SIZE_MULT]: 0x%06x\n", regl);
printf(" i.e. %lu KiB\n", 512l * regl *
get_hc_erase_grp_size(ext_csd) *
get_hc_wp_grp_size(ext_csd));
regl = (ext_csd[EXT_CSD_ENH_START_ADDR_3] << 24) |
(ext_csd[EXT_CSD_ENH_START_ADDR_2] << 16) |
(ext_csd[EXT_CSD_ENH_START_ADDR_1] << 8) |
ext_csd[EXT_CSD_ENH_START_ADDR_0];
printf("Enhanced User Data Start Address"
" [ENH_START_ADDR]: 0x%08x\n", regl);
printf(" i.e. %llu bytes offset\n", (is_blockaddresed(ext_csd) ?
512ll : 1ll) * regl);
/* A441]: reserved [135] */
printf("Bad Block Management mode"
" [SEC_BAD_BLK_MGMNT]: 0x%02x\n", ext_csd[134]);
/* A441: reserved [133:0] */
}
/* B45 */
if (ext_csd_rev >= 6) {
int j;
/* tcase_support ext_csd[132] not readable */
printf("Periodic Wake-up [PERIODIC_WAKEUP]: 0x%02x\n",
ext_csd[131]);
printf("Program CID/CSD in DDR mode support"
" [PROGRAM_CID_CSD_DDR_SUPPORT]: 0x%02x\n",
ext_csd[130]);
for (j = 127; j >= 64; j--)
printf("Vendor Specific Fields"
" [VENDOR_SPECIFIC_FIELD[%d]]: 0x%02x\n",
j, ext_csd[j]);
printf("Native sector size [NATIVE_SECTOR_SIZE]: 0x%02x\n",
ext_csd[63]);
printf("Sector size emulation [USE_NATIVE_SECTOR]: 0x%02x\n",
ext_csd[62]);
printf("Sector size [DATA_SECTOR_SIZE]: 0x%02x\n", ext_csd[61]);
printf("1st initialization after disabling sector"
" size emulation [INI_TIMEOUT_EMU]: 0x%02x\n",
ext_csd[60]);
printf("Class 6 commands control [CLASS_6_CTRL]: 0x%02x\n",
ext_csd[59]);
printf("Number of addressed group to be Released"
"[DYNCAP_NEEDED]: 0x%02x\n", ext_csd[58]);
printf("Exception events control"
" [EXCEPTION_EVENTS_CTRL]: 0x%04x\n",
(ext_csd[57] << 8) | ext_csd[56]);
printf("Exception events status"
"[EXCEPTION_EVENTS_STATUS]: 0x%04x\n",
(ext_csd[55] << 8) | ext_csd[54]);
printf("Extended Partitions Attribute"
" [EXT_PARTITIONS_ATTRIBUTE]: 0x%04x\n",
(ext_csd[53] << 8) | ext_csd[52]);
for (j = 51; j >= 37; j--)
printf("Context configuration"
" [CONTEXT_CONF[%d]]: 0x%02x\n", j, ext_csd[j]);
printf("Packed command status"
" [PACKED_COMMAND_STATUS]: 0x%02x\n", ext_csd[36]);
printf("Packed command failure index"
" [PACKED_FAILURE_INDEX]: 0x%02x\n", ext_csd[35]);
printf("Power Off Notification"
" [POWER_OFF_NOTIFICATION]: 0x%02x\n", ext_csd[34]);
printf("Control to turn the Cache ON/OFF"
" [CACHE_CTRL]: 0x%02x\n", ext_csd[33]);
/* flush_cache ext_csd[32] not readable */
printf("Control to turn the Cache Barrier ON/OFF"
" [BARRIER_CTRL]: 0x%02x\n", ext_csd[31]);
/*Reserved [30:0] */
}
if (ext_csd_rev >= 7) {
printf("eMMC Firmware Version: %.8s\n", (char*)&ext_csd[EXT_CSD_FIRMWARE_VERSION]);
printf("eMMC Life Time Estimation A [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]: 0x%02x\n",
ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]);
printf("eMMC Life Time Estimation B [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]: 0x%02x\n",
ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]);
printf("eMMC Pre EOL information [EXT_CSD_PRE_EOL_INFO]: 0x%02x\n",
ext_csd[EXT_CSD_PRE_EOL_INFO]);
reg = ext_csd[EXT_CSD_SECURE_REMOVAL_TYPE];
printf("Secure Removal Type [SECURE_REMOVAL_TYPE]: 0x%02x\n", reg);
printf(" information is configured to be removed ");
/* Bit [5:4]: Configure Secure Removal Type */
switch ((reg & EXT_CSD_CONFIG_SECRM_TYPE) >> 4) {
case 0x0:
printf("by an erase of the physical memory\n");
break;
case 0x1:
printf("by an overwriting the addressed locations"
" with a character followed by an erase\n");
break;
case 0x2:
printf("by an overwriting the addressed locations"
" with a character, its complement, then a random character\n");
break;
case 0x3:
printf("using a vendor defined\n");
break;
}
/* Bit [3:0]: Supported Secure Removal Type */
printf(" Supported Secure Removal Type:\n");
if (reg & 0x01)
printf(" information removed by an erase of the physical memory\n");
if (reg & 0x02)
printf(" information removed by an overwriting the addressed locations"
" with a character followed by an erase\n");
if (reg & 0x04)
printf(" information removed by an overwriting the addressed locations"
" with a character, its complement, then a random character\n");
if (reg & 0x08)
printf(" information removed using a vendor defined\n");
}
if (ext_csd_rev >= 8) {
printf("Command Queue Support [CMDQ_SUPPORT]: 0x%02x\n",
ext_csd[EXT_CSD_CMDQ_SUPPORT]);
printf("Command Queue Depth [CMDQ_DEPTH]: %u\n",
(ext_csd[EXT_CSD_CMDQ_DEPTH] & 0x1f) + 1);
printf("Command Enabled [CMDQ_MODE_EN]: 0x%02x\n",
ext_csd[EXT_CSD_CMDQ_MODE_EN]);
printf("Note: CMDQ_MODE_EN may not indicate the runtime CMDQ ON or OFF.\n"
"Please check sysfs node '/sys/devices/.../mmc_host/mmcX/mmcX:XXXX/cmdq_en'\n");
}
out_free:
return ret;
}
int do_write_extcsd(int nargs, char **argv)
{
int fd, ret;
int offset, value;
char *device;
if (nargs != 4) {
fprintf(stderr, "Usage: mmc extcsd write <offset> <value> </path/to/mmcblkX>\n");
exit(1);
}
offset = strtol(argv[1], NULL, 0);
value = strtol(argv[2], NULL, 0);
device = argv[3];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = write_extcsd_value(fd, offset, value, 0);
if (ret) {
fprintf(stderr,
"Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, offset, device);
exit(1);
}
return ret;
}
int do_sanitize(int nargs, char **argv)
{
int fd, ret;
char *device;
unsigned int timeout = 0;
if (nargs != 2 && nargs != 3) {
fprintf(stderr, "Usage: mmc sanitize </path/to/mmcblkX> [timeout_in_ms]\n");
exit(1);
}
if (nargs == 3)
timeout = strtol(argv[2], NULL, 10);
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = write_extcsd_value(fd, EXT_CSD_SANITIZE_START, 1, timeout);
if (ret) {
fprintf(stderr, "Could not write 0x%02x to EXT_CSD[%d] in %s\n",
1, EXT_CSD_SANITIZE_START, device);
exit(1);
}
close(fd);
return ret;
}
#define DO_IO(func, fd, buf, nbyte) \
({ \
ssize_t ret = 0, r; \
do { \
r = func(fd, buf + ret, nbyte - ret); \
if (r < 0 && errno != EINTR) { \
ret = -1; \
break; \
} \
else if (r > 0) \
ret += r; \
} while (r != 0 && (size_t)ret != nbyte); \
\
ret; \
})
#define RPMB_MULTI_CMD_MAX_CMDS 3
enum rpmb_op_type {
MMC_RPMB_WRITE_KEY = 0x01,
MMC_RPMB_READ_CNT = 0x02,
MMC_RPMB_WRITE = 0x03,
MMC_RPMB_READ = 0x04,
/* For internal usage only, do not use it directly */
MMC_RPMB_READ_RESP = 0x05
};
struct rpmb_frame {
u_int8_t stuff[196];
u_int8_t key_mac[32];
u_int8_t data[256];
u_int8_t nonce[16];
u_int32_t write_counter;
u_int16_t addr;
u_int16_t block_count;
u_int16_t result;
u_int16_t req_resp;
};
static inline void set_single_cmd(struct mmc_ioc_cmd *ioc, __u32 opcode,
int write_flag, unsigned int blocks)
{
ioc->opcode = opcode;
ioc->write_flag = write_flag;
ioc->arg = 0x0;
ioc->blksz = 512;
ioc->blocks = blocks;
ioc->flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
}
/* Performs RPMB operation.
*
* @fd: RPMB device on which we should perform ioctl command
* @frame_in: input RPMB frame, should be properly inited
* @frame_out: output (result) RPMB frame. Caller is responsible for checking
* result and req_resp for output frame.
* @out_cnt: count of outer frames. Used only for multiple blocks reading,
* in the other cases -EINVAL will be returned.
*/
static int do_rpmb_op(int fd,
const struct rpmb_frame *frame_in,
struct rpmb_frame *frame_out,
unsigned int out_cnt)
{
int err;
u_int16_t rpmb_type;
struct mmc_ioc_multi_cmd *mioc;
struct mmc_ioc_cmd *ioc;
struct rpmb_frame frame_status;
memset(&frame_status, 0, sizeof(frame_status));
if (!frame_in || !frame_out || !out_cnt)
return -EINVAL;
/* prepare arguments for MMC_IOC_MULTI_CMD ioctl */
mioc = (struct mmc_ioc_multi_cmd *)
calloc(1, sizeof (struct mmc_ioc_multi_cmd) +
RPMB_MULTI_CMD_MAX_CMDS * sizeof (struct mmc_ioc_cmd));
if (!mioc) {
return -ENOMEM;
}
rpmb_type = be16toh(frame_in->req_resp);
switch(rpmb_type) {
case MMC_RPMB_WRITE:
case MMC_RPMB_WRITE_KEY:
if (out_cnt != 1) {
err = -EINVAL;
goto out;
}
mioc->num_of_cmds = 3;
/* Write request */
ioc = &mioc->cmds[0];
set_single_cmd(ioc, MMC_WRITE_MULTIPLE_BLOCK, (1 << 31) | 1, 1);
mmc_ioc_cmd_set_data((*ioc), frame_in);
/* Result request */
ioc = &mioc->cmds[1];
frame_status.req_resp = htobe16(MMC_RPMB_READ_RESP);
set_single_cmd(ioc, MMC_WRITE_MULTIPLE_BLOCK, 1, 1);
mmc_ioc_cmd_set_data((*ioc), &frame_status);
/* Get response */
ioc = &mioc->cmds[2];
set_single_cmd(ioc, MMC_READ_MULTIPLE_BLOCK, 0, 1);
mmc_ioc_cmd_set_data((*ioc), frame_out);
break;
case MMC_RPMB_READ_CNT:
if (out_cnt != 1) {
err = -EINVAL;
goto out;
}
/* fall through */
case MMC_RPMB_READ:
mioc->num_of_cmds = 2;
/* Read request */
ioc = &mioc->cmds[0];
set_single_cmd(ioc, MMC_WRITE_MULTIPLE_BLOCK, 1, 1);
mmc_ioc_cmd_set_data((*ioc), frame_in);
/* Get response */
ioc = &mioc->cmds[1];
set_single_cmd(ioc, MMC_READ_MULTIPLE_BLOCK, 0, out_cnt);
mmc_ioc_cmd_set_data((*ioc), frame_out);
break;
default:
err = -EINVAL;
goto out;
}
err = ioctl(fd, MMC_IOC_MULTI_CMD, mioc);
out:
free(mioc);
return err;
}
int do_rpmb_write_key(int nargs, char **argv)
{
int ret, dev_fd, key_fd;
struct rpmb_frame frame_in = {
.req_resp = htobe16(MMC_RPMB_WRITE_KEY)
}, frame_out;
if (nargs != 3) {
fprintf(stderr, "Usage: mmc rpmb write-key </path/to/mmcblkXrpmb> </path/to/key>\n");
exit(1);
}
dev_fd = open(argv[1], O_RDWR);
if (dev_fd < 0) {
perror("device open");
exit(1);
}
if (0 == strcmp(argv[2], "-"))
key_fd = STDIN_FILENO;
else {
key_fd = open(argv[2], O_RDONLY);
if (key_fd < 0) {
perror("can't open key file");
exit(1);
}
}
/* Read the auth key */
ret = DO_IO(read, key_fd, frame_in.key_mac, sizeof(frame_in.key_mac));
if (ret < 0) {
perror("read the key");
exit(1);
} else if (ret != sizeof(frame_in.key_mac)) {
printf("Auth key must be %lu bytes length, but we read only %d, exit\n",
(unsigned long)sizeof(frame_in.key_mac),
ret);
exit(1);
}
/* Execute RPMB op */
ret = do_rpmb_op(dev_fd, &frame_in, &frame_out, 1);
if (ret != 0) {
perror("RPMB ioctl failed");
exit(1);
}
/* Check RPMB response */
if (frame_out.result != 0) {
printf("RPMB operation failed, retcode 0x%04x\n",
be16toh(frame_out.result));
exit(1);
}
close(dev_fd);
if (key_fd != STDIN_FILENO)
close(key_fd);
return ret;
}
int rpmb_read_counter(int dev_fd, unsigned int *cnt)
{
int ret;
struct rpmb_frame frame_in = {
.req_resp = htobe16(MMC_RPMB_READ_CNT)
}, frame_out;
/* Execute RPMB op */
ret = do_rpmb_op(dev_fd, &frame_in, &frame_out, 1);
if (ret != 0) {
perror("RPMB ioctl failed");
exit(1);
}
/* Check RPMB response */
if (frame_out.result != 0) {
*cnt = 0;
return be16toh(frame_out.result);
}
*cnt = be32toh(frame_out.write_counter);
return 0;
}
int do_rpmb_read_counter(int nargs, char **argv)
{
int ret, dev_fd;
unsigned int cnt;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc rpmb read-counter </path/to/mmcblkXrpmb>\n");
exit(1);
}
dev_fd = open(argv[1], O_RDWR);
if (dev_fd < 0) {
perror("device open");
exit(1);
}
ret = rpmb_read_counter(dev_fd, &cnt);
/* Check RPMB response */
if (ret != 0) {
printf("RPMB operation failed, retcode 0x%04x\n", ret);
exit(1);
}
close(dev_fd);
printf("Counter value: 0x%08x\n", cnt);
return ret;
}
int do_rpmb_read_block(int nargs, char **argv)
{
int i, ret, dev_fd, data_fd, key_fd = -1;
uint16_t addr;
/*
* for reading RPMB, number of blocks is set by CMD23 only, the packet
* frame field for that is set to 0. So, the type is not u16 but uint!
*/
unsigned int blocks_cnt;
unsigned char key[32];
struct rpmb_frame frame_in = {
.req_resp = htobe16(MMC_RPMB_READ),
}, *frame_out_p;
if (nargs != 5 && nargs != 6) {
fprintf(stderr, "Usage: mmc rpmb read-block </path/to/mmcblkXrpmb> <address> <blocks count> </path/to/output_file> [/path/to/key]\n");
exit(1);
}
dev_fd = open(argv[1], O_RDWR);
if (dev_fd < 0) {
perror("device open");
exit(1);
}
/* Get block address */
errno = 0;
addr = strtol(argv[2], NULL, 0);
if (errno) {
perror("incorrect address");
exit(1);
}
frame_in.addr = htobe16(addr);
/* Get blocks count */
errno = 0;
blocks_cnt = strtol(argv[3], NULL, 0);
if (errno) {
perror("incorrect blocks count");
exit(1);
}
if (!blocks_cnt) {
printf("please, specify valid blocks count number\n");
exit(1);
}
frame_out_p = calloc(sizeof(*frame_out_p), blocks_cnt);
if (!frame_out_p) {
printf("can't allocate memory for RPMB outer frames\n");
exit(1);
}
/* Write 256b data */
if (0 == strcmp(argv[4], "-"))
data_fd = STDOUT_FILENO;
else {
data_fd = open(argv[4], O_WRONLY | O_CREAT | O_APPEND,
S_IRUSR | S_IWUSR);
if (data_fd < 0) {
perror("can't open output file");
exit(1);
}
}
/* Key is specified */
if (nargs == 6) {
if (0 == strcmp(argv[5], "-"))
key_fd = STDIN_FILENO;
else {
key_fd = open(argv[5], O_RDONLY);
if (key_fd < 0) {
perror("can't open input key file");
exit(1);
}
}
ret = DO_IO(read, key_fd, key, sizeof(key));
if (ret < 0) {
perror("read the key data");
exit(1);
} else if (ret != sizeof(key)) {
printf("Data must be %lu bytes length, but we read only %d, exit\n",
(unsigned long)sizeof(key),
ret);
exit(1);
}
}
/* Execute RPMB op */
ret = do_rpmb_op(dev_fd, &frame_in, frame_out_p, blocks_cnt);
if (ret != 0) {
perror("RPMB ioctl failed");
exit(1);
}
/* Check RPMB response */
if (frame_out_p[blocks_cnt - 1].result != 0) {
printf("RPMB operation failed, retcode 0x%04x\n",
be16toh(frame_out_p[blocks_cnt - 1].result));
exit(1);
}
/* Do we have to verify data against key? */
if (nargs == 6) {
unsigned char mac[32];
hmac_sha256_ctx ctx;
struct rpmb_frame *frame_out = NULL;
hmac_sha256_init(&ctx, key, sizeof(key));
for (i = 0; i < blocks_cnt; i++) {
frame_out = &frame_out_p[i];
hmac_sha256_update(&ctx, frame_out->data,
sizeof(*frame_out) -
offsetof(struct rpmb_frame, data));
}
hmac_sha256_final(&ctx, mac, sizeof(mac));
/* Impossible */
assert(frame_out);
/* Compare calculated MAC and MAC from last frame */
if (memcmp(mac, frame_out->key_mac, sizeof(mac))) {
printf("RPMB MAC missmatch\n");
exit(1);
}
}
/* Write data */
for (i = 0; i < blocks_cnt; i++) {
struct rpmb_frame *frame_out = &frame_out_p[i];
ret = DO_IO(write, data_fd, frame_out->data, sizeof(frame_out->data));
if (ret < 0) {
perror("write the data");
exit(1);
} else if (ret != sizeof(frame_out->data)) {
printf("Data must be %lu bytes length, but we wrote only %d, exit\n",
(unsigned long)sizeof(frame_out->data),
ret);
exit(1);
}
}
free(frame_out_p);
close(dev_fd);
if (data_fd != STDOUT_FILENO)
close(data_fd);
if (key_fd != -1 && key_fd != STDIN_FILENO)
close(key_fd);
return ret;
}
int do_rpmb_write_block(int nargs, char **argv)
{
int ret, dev_fd, key_fd, data_fd;
unsigned char key[32];
uint16_t addr;
unsigned int cnt;
struct rpmb_frame frame_in = {
.req_resp = htobe16(MMC_RPMB_WRITE),
.block_count = htobe16(1)
}, frame_out;
if (nargs != 5) {
fprintf(stderr, "Usage: mmc rpmb write-block </path/to/mmcblkXrpmb> <address> </path/to/input_file> </path/to/key>\n");
exit(1);
}
dev_fd = open(argv[1], O_RDWR);
if (dev_fd < 0) {
perror("device open");
exit(1);
}
ret = rpmb_read_counter(dev_fd, &cnt);
/* Check RPMB response */
if (ret != 0) {
printf("RPMB read counter operation failed, retcode 0x%04x\n", ret);
exit(1);
}
frame_in.write_counter = htobe32(cnt);
/* Get block address */
errno = 0;
addr = strtol(argv[2], NULL, 0);
if (errno) {
perror("incorrect address");
exit(1);
}
frame_in.addr = htobe16(addr);
/* Read 256b data */
if (0 == strcmp(argv[3], "-"))
data_fd = STDIN_FILENO;
else {
data_fd = open(argv[3], O_RDONLY);
if (data_fd < 0) {
perror("can't open input file");
exit(1);
}
}
ret = DO_IO(read, data_fd, frame_in.data, sizeof(frame_in.data));
if (ret < 0) {
perror("read the data");
exit(1);
} else if (ret != sizeof(frame_in.data)) {
printf("Data must be %lu bytes length, but we read only %d, exit\n",
(unsigned long)sizeof(frame_in.data),
ret);
exit(1);
}
/* Read the auth key */
if (0 == strcmp(argv[4], "-"))
key_fd = STDIN_FILENO;
else {
key_fd = open(argv[4], O_RDONLY);
if (key_fd < 0) {
perror("can't open key file");
exit(1);
}
}
ret = DO_IO(read, key_fd, key, sizeof(key));
if (ret < 0) {
perror("read the key");
exit(1);
} else if (ret != sizeof(key)) {
printf("Auth key must be %lu bytes length, but we read only %d, exit\n",
(unsigned long)sizeof(key),
ret);
exit(1);
}
/* Calculate HMAC SHA256 */
hmac_sha256(
key, sizeof(key),
frame_in.data, sizeof(frame_in) - offsetof(struct rpmb_frame, data),
frame_in.key_mac, sizeof(frame_in.key_mac));
/* Execute RPMB op */
ret = do_rpmb_op(dev_fd, &frame_in, &frame_out, 1);
if (ret != 0) {
perror("RPMB ioctl failed");
exit(1);
}
/* Check RPMB response */
if (frame_out.result != 0) {
printf("RPMB operation failed, retcode 0x%04x\n",
be16toh(frame_out.result));
exit(1);
}
close(dev_fd);
if (data_fd != STDIN_FILENO)
close(data_fd);
if (key_fd != STDIN_FILENO)
close(key_fd);
return ret;
}
int do_cache_ctrl(int value, int nargs, char **argv)
{
__u8 ext_csd[512];
int fd, ret;
char *device;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc cache enable </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
exit(1);
}
if (ext_csd[EXT_CSD_REV] < EXT_CSD_REV_V4_5) {
fprintf(stderr,
"The CACHE option is only availabe on devices >= "
"MMC 4.5 %s\n", device);
exit(1);
}
/* If the cache size is zero, this device does not have a cache */
if (!(ext_csd[EXT_CSD_CACHE_SIZE_3] ||
ext_csd[EXT_CSD_CACHE_SIZE_2] ||
ext_csd[EXT_CSD_CACHE_SIZE_1] ||
ext_csd[EXT_CSD_CACHE_SIZE_0])) {
fprintf(stderr,
"The CACHE option is not available on %s\n",
device);
exit(1);
}
ret = write_extcsd_value(fd, EXT_CSD_CACHE_CTRL, value, 0);
if (ret) {
fprintf(stderr,
"Could not write 0x%02x to EXT_CSD[%d] in %s\n",
value, EXT_CSD_CACHE_CTRL, device);
exit(1);
}
close(fd);
return ret;
}
int do_cache_en(int nargs, char **argv)
{
return do_cache_ctrl(1, nargs, argv);
}
int do_cache_dis(int nargs, char **argv)
{
return do_cache_ctrl(0, nargs, argv);
}
static int erase(int dev_fd, __u32 argin, __u32 start, __u32 end)
{
int ret = 0;
struct mmc_ioc_multi_cmd *multi_cmd;
__u8 ext_csd[512];
ret = read_extcsd(dev_fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD\n");
exit(1);
}
if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) {
fprintf(stderr, "High Capacity Erase Unit Size=%d bytes\n" \
"High Capacity Erase Timeout=%d ms\n" \
"High Capacity Write Protect Group Size=%d bytes\n",
ext_csd[224]*0x80000,
ext_csd[223]*300,
ext_csd[221]*ext_csd[224]*0x80000);
}
multi_cmd = calloc(1, sizeof(struct mmc_ioc_multi_cmd) +
3 * sizeof(struct mmc_ioc_cmd));
if (!multi_cmd) {
perror("Failed to allocate memory");
return -ENOMEM;
}
multi_cmd->num_of_cmds = 3;
/* Set erase start address */
multi_cmd->cmds[0].opcode = MMC_ERASE_GROUP_START;
multi_cmd->cmds[0].arg = start;
multi_cmd->cmds[0].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
multi_cmd->cmds[0].write_flag = 1;
/* Set erase end address */
multi_cmd->cmds[1].opcode = MMC_ERASE_GROUP_END;
multi_cmd->cmds[1].arg = end;
multi_cmd->cmds[1].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
multi_cmd->cmds[1].write_flag = 1;
/* Send Erase Command */
multi_cmd->cmds[2].opcode = MMC_ERASE;
multi_cmd->cmds[2].arg = argin;
multi_cmd->cmds[2].cmd_timeout_ms = 300*255*255;
multi_cmd->cmds[2].flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
multi_cmd->cmds[2].write_flag = 1;
/* send erase cmd with multi-cmd */
ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
if (ret)
perror("Erase multi-cmd ioctl");
/* Does not work for SPI cards */
if (multi_cmd->cmds[1].response[0] & R1_ERASE_PARAM) {
fprintf(stderr, "Erase start response: 0x%08x\n",
multi_cmd->cmds[0].response[0]);
ret = -EIO;
}
if (multi_cmd->cmds[2].response[0] & R1_ERASE_SEQ_ERROR) {
fprintf(stderr, "Erase response: 0x%08x\n",
multi_cmd->cmds[2].response[0]);
ret = -EIO;
}
free(multi_cmd);
return ret;
}
int do_erase(int nargs, char **argv)
{
int dev_fd, ret;
char *print_str;
__u8 ext_csd[512], checkup_mask = 0;
__u32 arg, start, end;
if (nargs != 5) {
fprintf(stderr, "Usage: erase <type> <start addr> <end addr> </path/to/mmcblkX>\n");
exit(1);
}
if (strstr(argv[2], "0x") || strstr(argv[2], "0X"))
start = strtol(argv[2], NULL, 16);
else
start = strtol(argv[2], NULL, 10);
if (strstr(argv[3], "0x") || strstr(argv[3], "0X"))
end = strtol(argv[3], NULL, 16);
else
end = strtol(argv[3], NULL, 10);
if (end < start) {
fprintf(stderr, "erase start [0x%08x] > erase end [0x%08x]\n",
start, end);
exit(1);
}
if (strcmp(argv[1], "legacy") == 0) {
arg = 0x00000000;
print_str = "Legacy Erase";
} else if (strcmp(argv[1], "discard") == 0) {
arg = 0x00000003;
print_str = "Discard";
} else if (strcmp(argv[1], "secure-erase") == 0) {
print_str = "Secure Erase";
checkup_mask = EXT_CSD_SEC_ER_EN;
arg = 0x80000000;
} else if (strcmp(argv[1], "secure-trim1") == 0) {
print_str = "Secure Trim Step 1";
checkup_mask = EXT_CSD_SEC_ER_EN | EXT_CSD_SEC_GB_CL_EN;
arg = 0x80000001;
} else if (strcmp(argv[1], "secure-trim2") == 0) {
print_str = "Secure Trim Step 2";
checkup_mask = EXT_CSD_SEC_ER_EN | EXT_CSD_SEC_GB_CL_EN;
arg = 0x80008000;
} else if (strcmp(argv[1], "trim") == 0) {
print_str = "Trim";
checkup_mask = EXT_CSD_SEC_GB_CL_EN;
arg = 0x00000001;
} else {
fprintf(stderr, "Unknown erase type: %s\n", argv[1]);
exit(1);
}
dev_fd = open(argv[4], O_RDWR);
if (dev_fd < 0) {
perror(argv[4]);
exit(1);
}
if (checkup_mask) {
ret = read_extcsd(dev_fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n",
argv[4]);
goto out;
}
if ((checkup_mask & ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) !=
checkup_mask) {
fprintf(stderr, "%s is not supported in %s\n",
print_str, argv[4]);
ret = -ENOTSUP;
goto out;
}
}
printf("Executing %s from 0x%08x to 0x%08x\n", print_str, start, end);
ret = erase(dev_fd, arg, start, end);
out:
printf(" %s %s!\n\n", print_str, ret ? "Failed" : "Succeed");
close(dev_fd);
return ret;
}
int do_ffu(int nargs, char **argv)
{
int dev_fd, img_fd;
int sect_done = 0, retry = 3, ret = -EINVAL;
unsigned int sect_size;
__u8 ext_csd[512];
__u8 *buf = NULL;
__u32 arg;
off_t fw_size;
char *device;
struct mmc_ioc_multi_cmd *multi_cmd = NULL;
if (nargs != 3) {
fprintf(stderr, "Usage: ffu <image name> </path/to/mmcblkX> \n");
exit(1);
}
device = argv[2];
dev_fd = open(device, O_RDWR);
if (dev_fd < 0) {
perror("device open failed");
exit(1);
}
img_fd = open(argv[1], O_RDONLY);
if (img_fd < 0) {
perror("image open failed");
close(dev_fd);
exit(1);
}
ret = read_extcsd(dev_fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
goto out;
}
if (ext_csd[EXT_CSD_REV] < EXT_CSD_REV_V5_0) {
fprintf(stderr,
"The FFU feature is only available on devices >= "
"MMC 5.0, not supported in %s\n", device);
goto out;
}
if (!(ext_csd[EXT_CSD_SUPPORTED_MODES] & EXT_CSD_FFU)) {
fprintf(stderr, "FFU is not supported in %s\n", device);
goto out;
}
if (ext_csd[EXT_CSD_FW_CONFIG] & EXT_CSD_UPDATE_DISABLE) {
fprintf(stderr, "Firmware update was disabled in %s\n", device);
goto out;
}
fw_size = lseek(img_fd, 0, SEEK_END);
if (fw_size > MMC_IOC_MAX_BYTES || fw_size == 0) {
fprintf(stderr, "Wrong firmware size");
goto out;
}
/* allocate maximum required */
buf = malloc(fw_size);
multi_cmd = calloc(1, sizeof(struct mmc_ioc_multi_cmd) +
4 * sizeof(struct mmc_ioc_cmd));
if (!buf || !multi_cmd) {
perror("failed to allocate memory");
goto out;
}
/* ensure fw is multiple of native sector size */
sect_size = (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 0) ? 512 : 4096;
if (fw_size % sect_size) {
fprintf(stderr, "Firmware data size (%jd) is not aligned!\n", (intmax_t)fw_size);
goto out;
}
/* set CMD ARG */
arg = ext_csd[EXT_CSD_FFU_ARG_0] |
ext_csd[EXT_CSD_FFU_ARG_1] << 8 |
ext_csd[EXT_CSD_FFU_ARG_2] << 16 |
ext_csd[EXT_CSD_FFU_ARG_3] << 24;
/* prepare multi_cmd for FFU based on cmd to be used */
/* prepare multi_cmd to be sent */
multi_cmd->num_of_cmds = 4;
/* put device into ffu mode */
fill_switch_cmd(&multi_cmd->cmds[0], EXT_CSD_MODE_CONFIG,
EXT_CSD_FFU_MODE);
/* send block count */
multi_cmd->cmds[1].opcode = MMC_SET_BLOCK_COUNT;
multi_cmd->cmds[1].arg = fw_size / 512;
multi_cmd->cmds[1].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
/* send image chunk */
multi_cmd->cmds[2].opcode = MMC_WRITE_MULTIPLE_BLOCK;
/*
* blksz and blocks essentially do not matter, as long as the product
* is fw_size, but some hosts don't handle larger blksz well.
*/
multi_cmd->cmds[2].blksz = 512;
multi_cmd->cmds[2].blocks = fw_size / 512;
multi_cmd->cmds[2].arg = arg;
multi_cmd->cmds[2].flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
multi_cmd->cmds[2].write_flag = 1;
mmc_ioc_cmd_set_data(multi_cmd->cmds[2], buf);
/* return device into normal mode */
fill_switch_cmd(&multi_cmd->cmds[3], EXT_CSD_MODE_CONFIG,
EXT_CSD_NORMAL_MODE);
/* read firmware */
lseek(img_fd, 0, SEEK_SET);
if (read(img_fd, buf, fw_size) != fw_size) {
perror("Could not read the firmware file: ");
ret = -ENOSPC;
goto out;
}
do_retry:
/* send ioctl with multi-cmd */
ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
if (ret) {
perror("Multi-cmd ioctl");
/* In case multi-cmd ioctl failed before exiting from ffu mode */
ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
goto out;
}
/*
* By spec - check if mode operation codes are supported in ffu features,
* if not then skip checking number of sectors programmed after install
*/
if (!ext_csd[EXT_CSD_FFU_FEATURES]) {
fprintf(stderr, "Please reboot to complete firmware installation on %s\n", device);
ret = 0;
goto out;
}
ret = read_extcsd(dev_fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
goto out;
}
/* Test if we need to restart the download */
sect_done = ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_0] |
ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_1] << 8 |
ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_2] << 16 |
ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG_3] << 24;
/* By spec, host should re-start download from the first sector if sect_done is 0 */
if (sect_done == 0) {
if (retry--) {
fprintf(stderr, "Programming failed. Retrying... (%d)\n", retry);
goto do_retry;
}
fprintf(stderr, "Programming failed! Aborting...\n");
goto out;
}
if ((sect_done * sect_size) == fw_size) {
fprintf(stderr, "Programmed %jd/%jd bytes\n", (intmax_t)fw_size, (intmax_t)fw_size);
fprintf(stderr, "Programming finished with status %d \n", ret);
}
else {
fprintf(stderr, "FW size and number of sectors written mismatch. Status return %d\n", ret);
goto out;
}
fprintf(stderr, "Installing firmware on %s...\n", device);
/* Re-enter ffu mode and install the firmware */
multi_cmd->num_of_cmds = 2;
/* set ext_csd to install mode */
fill_switch_cmd(&multi_cmd->cmds[1], EXT_CSD_MODE_OPERATION_CODES,
EXT_CSD_FFU_INSTALL);
/* send ioctl with multi-cmd */
ret = ioctl(dev_fd, MMC_IOC_MULTI_CMD, multi_cmd);
if (ret) {
perror("Multi-cmd ioctl failed setting install mode");
/* In case multi-cmd ioctl failed before exiting from ffu mode */
ioctl(dev_fd, MMC_IOC_CMD, &multi_cmd->cmds[3]);
goto out;
}
ret = read_extcsd(dev_fd, ext_csd);
if (ret) {
fprintf(stderr, "Could not read EXT_CSD from %s\n", device);
goto out;
}
/* return status */
ret = ext_csd[EXT_CSD_FFU_STATUS];
if (ret) {
fprintf(stderr, "%s: error %d during FFU install:\n", device, ret);
goto out;
} else {
fprintf(stderr, "FFU finished successfully\n");
}
out:
free(buf);
free(multi_cmd);
close(img_fd);
close(dev_fd);
return ret;
}
int do_general_cmd_read(int nargs, char **argv)
{
int dev_fd;
char *device;
char *endptr;
__u8 buf[512];
__u32 arg = 0x01;
int ret = -EINVAL, i;
struct mmc_ioc_cmd idata;
if (nargs != 2 && nargs != 3) {
fprintf(stderr, "Usage: gen_cmd read </path/to/mmcblkX> [arg]\n");
exit(1);
}
device = argv[1];
dev_fd = open(device, O_RDWR);
if (dev_fd < 0) {
perror("device open failed");
exit(1);
}
/* arg is specified */
if (nargs == 3) {
arg = strtol(argv[2], &endptr, 16);
if (errno != 0 || *endptr != '\0' || !(arg & 0x1)) {
fprintf(stderr, "Wrong ARG, it should be Hex number and bit0 must be 1\n");
goto out;
}
}
memset(&idata, 0, sizeof(idata));
idata.write_flag = 0;
idata.opcode = MMC_GEN_CMD;
idata.arg = arg;
idata.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
idata.blksz = 512;
idata.blocks = 1;
mmc_ioc_cmd_set_data(idata, buf);
ret = ioctl(dev_fd, MMC_IOC_CMD, &idata);
if (ret) {
perror("ioctl");
goto out;
}
printf("Data:\n");
for (i = 0; i < 512; i++) {
printf("%2x ", buf[i]);
if ((i + 1) % 16 == 0)
printf("\n");
}
out:
close(dev_fd);
return ret;
}
static void issue_cmd0(char *device, __u32 arg)
{
struct mmc_ioc_cmd idata;
int fd;
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
memset(&idata, 0, sizeof(idata));
idata.opcode = MMC_GO_IDLE_STATE;
idata.arg = arg;
idata.flags = MMC_RSP_NONE | MMC_CMD_BC;
/* No need to check for error, it is expected */
ioctl(fd, MMC_IOC_CMD, &idata);
close(fd);
}
int do_softreset(int nargs, char **argv)
{
char *device;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc softreset </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
issue_cmd0(device, MMC_GO_IDLE_STATE_ARG);
return 0;
}
int do_preidle(int nargs, char **argv)
{
char *device;
if (nargs != 2) {
fprintf(stderr, "Usage: mmc preidle </path/to/mmcblkX>\n");
exit(1);
}
device = argv[1];
issue_cmd0(device, MMC_GO_PRE_IDLE_STATE_ARG);
return 0;
}
int do_alt_boot_op(int nargs, char **argv)
{
int fd, ret, boot_data_fd;
char *device, *boot_data_file;
struct mmc_ioc_multi_cmd *mioc;
__u8 ext_csd[512];
__u8 *boot_buf;
unsigned int boot_blocks, ext_csd_boot_size;
if (nargs != 3) {
fprintf(stderr, "Usage: mmc boot_op <boot_data_file> </path/to/mmcblkX>\n");
exit(1);
}
boot_data_file = argv[1];
device = argv[2];
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open device");
exit(1);
}
ret = read_extcsd(fd, ext_csd);
if (ret) {
perror("read extcsd");
goto dev_fd_close;
}
if (!(ext_csd[EXT_CSD_BOOT_INFO] & EXT_CSD_BOOT_INFO_ALT)) {
ret = -EINVAL;
perror("Card does not support alternative boot mode");
goto dev_fd_close;
}
if (ext_csd[EXT_CSD_PART_CONFIG] & EXT_CSD_PART_CONFIG_ACC_ACK) {
ret = -EINVAL;
perror("Boot Ack must not be enabled");
goto dev_fd_close;
}
ext_csd_boot_size = ext_csd[EXT_CSD_BOOT_MULT] * 128 * 1024;
boot_blocks = ext_csd_boot_size / 512;
if (ext_csd_boot_size > MMC_IOC_MAX_BYTES) {
printf("Boot partition size is bigger than IOCTL limit, limiting to 512K\n");
boot_blocks = MMC_IOC_MAX_BYTES / 512;
}
boot_data_fd = open(boot_data_file, O_WRONLY | O_CREAT, 0644);
if (boot_data_fd < 0) {
perror("open boot data file");
ret = 1;
goto boot_data_close;
}
boot_buf = calloc(1, sizeof(__u8) * boot_blocks * 512);
mioc = calloc(1, sizeof(struct mmc_ioc_multi_cmd) +
2 * sizeof(struct mmc_ioc_cmd));
if (!mioc || !boot_buf) {
perror("Failed to allocate memory");
ret = -ENOMEM;
goto alloced_error;
}
mioc->num_of_cmds = 2;
mioc->cmds[0].opcode = MMC_GO_IDLE_STATE;
mioc->cmds[0].arg = MMC_GO_PRE_IDLE_STATE_ARG;
mioc->cmds[0].flags = MMC_RSP_NONE | MMC_CMD_AC;
mioc->cmds[0].write_flag = 0;
mioc->cmds[1].opcode = MMC_GO_IDLE_STATE;
mioc->cmds[1].arg = MMC_BOOT_INITIATION_ARG;
mioc->cmds[1].flags = MMC_RSP_NONE | MMC_CMD_ADTC;
mioc->cmds[1].write_flag = 0;
mioc->cmds[1].blksz = 512;
mioc->cmds[1].blocks = boot_blocks;
/* Access time of boot part differs wildly, spec mandates 1s */
mioc->cmds[1].data_timeout_ns = 2 * 1000 * 1000 * 1000;
mmc_ioc_cmd_set_data(mioc->cmds[1], boot_buf);
ret = ioctl(fd, MMC_IOC_MULTI_CMD, mioc);
if (ret) {
perror("multi-cmd ioctl error\n");
goto alloced_error;
}
ret = DO_IO(write, boot_data_fd, boot_buf, boot_blocks * 512);
if (ret < 0) {
perror("Write error\n");
goto alloced_error;
}
ret = 0;
alloced_error:
if (mioc)
free(mioc);
if (boot_buf)
free(boot_buf);
boot_data_close:
close(boot_data_fd);
dev_fd_close:
close(fd);
if (ret)
exit(1);
return 0;
}
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