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You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. 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It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + 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., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..e2583d2 --- /dev/null +++ b/Makefile @@ -0,0 +1,10 @@ +CFLAGS=-std=gnu99 -Wall + +BINARY=usamba +SOURCES = usamba.c comm.c chipid.c eefc.c +OBJS = $(SOURCES:.c=.o) + +$(BINARY): $(OBJS) + +clean: + @rm -f $(OBJS) $(BINARY) diff --git a/README.md b/README.md new file mode 100644 index 0000000..91670b7 --- /dev/null +++ b/README.md @@ -0,0 +1,42 @@ +Micro SAM-BA +------------ + +# Description + +This simple tool can be used to program the internal flash of the following +microcontrollers: + + - Atmel SAME70/S70/V70/V71 + +Communication with SAM-BA bootloader is only supported through USB. + +Before using the tool, the MCU must be put in "Boot from ROM" mode, either by +fully erasing it using the ERASE pin or by clearing GPVNM1 (see datasheet for +more information). When the device is in this mode, it will be enumerated as: + + 03eb:6124 Atmel Corp. at91sam SAMBA bootloader + +# Usage + +Usage: ``./usamba (read|write|verify|erase-all|gpnvm) [args]*`` + +- Read Flash: + ``./usamba read `` + +- Write Flash: + ``./usamba write `` + +- Verify Flash: + ``./usamba verify `` + +- Erase Flash: + ``./usamba erase-all`` + +- Get/Set/Clear GPNVM: + ``./usamba gpnvm (get|set|clear) `` + +for all commands: + ```` is the USB device node for the SAM-BA bootloader, for + example ``/dev/ttyACM0``. + ```` and ```` can be specified in decimal, hexadecimal (if + prefixed by ``0x``) or octal (if prefixed by ``0``). diff --git a/chipid.c b/chipid.c new file mode 100644 index 0000000..eb5e60b --- /dev/null +++ b/chipid.c @@ -0,0 +1,99 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#include +#include "chipid.h" +#include "comm.h" +#include "utils.h" + +static const struct _chip _chips_samx7[] = { + { "SAME70Q21", 0xa1020e00, 0x00000002, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAME70Q20", 0xa1020c00, 0x00000002, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAME70Q19", 0xa10d0a00, 0x00000002, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAME70N21", 0xa1020e00, 0x00000001, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAME70N20", 0xa1020c00, 0x00000001, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAME70N19", 0xa10d0a00, 0x00000001, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAME70J21", 0xa1020e00, 0x00000000, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAME70J20", 0xa1020c00, 0x00000000, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAME70J19", 0xa10d0a00, 0x00000000, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMS70Q21", 0xa1120e00, 0x00000002, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAMS70Q20", 0xa1120c00, 0x00000002, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMS70Q19", 0xa11d0a00, 0x00000002, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMS70N21", 0xa1120e00, 0x00000001, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAMS70N20", 0xa1120c00, 0x00000001, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMS70N19", 0xa11d0a00, 0x00000001, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMS70J21", 0xa1120e00, 0x00000000, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAMS70J20", 0xa1120c00, 0x00000000, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMS70J19", 0xa11d0a00, 0x00000000, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMV71Q21", 0xa1220e00, 0x00000002, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAMV71Q20", 0xa1220c00, 0x00000002, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMV71Q19", 0xa12d0a00, 0x00000002, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMV71N21", 0xa1220e00, 0x00000001, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAMV71N20", 0xa1220c00, 0x00000001, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMV71N19", 0xa12d0a00, 0x00000001, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMV71J21", 0xa1220e00, 0x00000000, 0x400e0c00, 0x00400000, 2048, 9 }, + { "SAMV71J20", 0xa1220c00, 0x00000000, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMV71J19", 0xa12d0a00, 0x00000000, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMV70Q20", 0xa1320c00, 0x00000002, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMV70Q19", 0xa13d0a00, 0x00000002, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMV70N20", 0xa1320c00, 0x00000001, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMV70N19", 0xa13d0a00, 0x00000001, 0x400e0c00, 0x00400000, 512, 9 }, + { "SAMV70J20", 0xa1320c00, 0x00000000, 0x400e0c00, 0x00400000, 1024, 9 }, + { "SAMV70J19", 0xa13d0a00, 0x00000000, 0x400e0c00, 0x00400000, 512, 9 }, +}; + +static const struct _chip_serie _chip_series[] = { + { + .name = "samx7", + .cidr_reg = 0x400e0940, + .exid_reg = 0x400e0944, + .nb_chips = ARRAY_SIZE(_chips_samx7), + .chips = _chips_samx7, + }, +}; + +const struct _chip_serie* chipid_get_serie(const char* name) +{ + for (int i = 0; i < ARRAY_SIZE(_chip_series); i++) + if (!strcmp(_chip_series[i].name, name)) + return &_chip_series[i]; + return NULL; +} + +bool chipid_check_serie(int fd, const struct _chip_serie* serie, const struct _chip** chip) +{ + // Read chip identifiers (CIDR/EXID) + uint32_t cidr, exid; + if (!samba_read_word(fd, serie->cidr_reg, &cidr)) + return false; + if (!samba_read_word(fd, serie->exid_reg, &exid)) + return false; + + // Identify chip and read its flash infos + for (int i = 0; i < serie->nb_chips; i++) { + if (serie->chips[i].cidr == cidr && serie->chips[i].exid == exid) { + *chip = &serie->chips[i]; + return true; + } + } + + return false; +} + +const struct _chip_serie* chipid_identity_serie(int fd, const struct _chip** chip) +{ + for (int i = 0; i < ARRAY_SIZE(_chip_series); i++) + if (chipid_check_serie(fd, &_chip_series[i], chip)) + return &_chip_series[i]; + return NULL; +} diff --git a/chipid.h b/chipid.h new file mode 100644 index 0000000..24a8656 --- /dev/null +++ b/chipid.h @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#ifndef CHIPID_H_ +#define CHIPID_H_ + +#include +#include + +struct _chip { + const char* name; + uint32_t cidr; + uint32_t exid; + uint32_t eefc_base; + uint32_t flash_addr; + uint32_t flash_size; + uint8_t gpnvm; +}; + +struct _chip_serie { + const char* name; + uint32_t cidr_reg; + uint32_t exid_reg; + uint32_t nb_chips; + const struct _chip* chips; +}; + +extern const struct _chip_serie* chipid_get_serie(const char* name); + +extern bool chipid_check_serie(int fd, const struct _chip_serie* serie, const struct _chip** chip); + +extern const struct _chip_serie* chipid_identity_serie(int fd, const struct _chip** chip); + +#endif /* CHIPID_H_ */ diff --git a/comm.c b/comm.c new file mode 100644 index 0000000..0183c2a --- /dev/null +++ b/comm.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "comm.h" +#include "utils.h" + +static bool configure_tty(int fd, int speed) +{ + struct termios tty; + + memset(&tty, 0, sizeof(tty)); + + if (tcgetattr(fd, &tty) != 0) { + perror("error from tcgetattr: "); + return false; + } + + if (speed) { + cfsetospeed(&tty, speed); + cfsetispeed(&tty, speed); + } + + tty.c_cflag &= ~(CSIZE | PARENB | PARODD | CSTOPB | CRTSCTS); + tty.c_cflag |= CS8 | CLOCAL | CREAD; + tty.c_lflag = 0; + tty.c_oflag = 0; + tty.c_cc[VMIN] = 1; + tty.c_cc[VTIME] = 5; + tty.c_iflag &= ~(ICRNL | IGNBRK | IXON | IXOFF | IXANY); + + if (tcsetattr(fd, TCSANOW, &tty) != 0) { + perror("error from tcsetattr: "); + return false; + } + + return true; +} + +static bool switch_to_binary(int fd) +{ + char cmd[] = "N#"; + if (write(fd, cmd, strlen(cmd)) != strlen(cmd)) + return false; + return read(fd, cmd, 2) == 2; +} + +int samba_open(const char* device) +{ + int fd = open(device, O_RDWR | O_NOCTTY | O_SYNC); + if (fd < 0) { + perror("Could not open device"); + return -1; + } + + if (!configure_tty(fd, B4000000)) { + close(fd); + return -1; + } + + if (!switch_to_binary(fd)) { + close(fd); + return -1; + } + + return fd; +} + +void samba_close(int fd) +{ + close(fd); +} + +bool samba_read_word(int fd, uint32_t addr, uint32_t* value) +{ + char cmd[12]; + snprintf(cmd, sizeof(cmd), "w%08x,#", addr); + if (write(fd, cmd, strlen(cmd)) != strlen(cmd)) + return false; + return read(fd, value, 4) == 4; +} + +bool samba_write_word(int fd, uint32_t addr, uint32_t value) +{ + char cmd[20]; + snprintf(cmd, sizeof(cmd), "W%08x,%08x#", addr, value); + return write(fd, cmd, strlen(cmd)) == strlen(cmd); +} + +bool samba_read(int fd, uint8_t* buffer, uint32_t addr, uint32_t size) +{ + char cmd[20]; + while (size > 0) { + uint32_t count = MIN(size, 1024); + // workaround for bug when size is exactly 512 + if (count == 512) + count = 1; + snprintf(cmd, sizeof(cmd), "R%08x,%08x#", addr, count); + if (write(fd, cmd, strlen(cmd)) != strlen(cmd)) + return false; + if (read(fd, buffer, count) != count) + return false; + addr += count; + buffer += count; + size -= count; + } + return true; +} + +bool samba_write(int fd, uint8_t* buffer, uint32_t addr, uint32_t size) +{ + char cmd[20]; + while (size > 0) { + uint32_t count = MIN(size, 1024); + // workaround for bug when size is exactly 512 + if (count == 512) + count = 1; + snprintf(cmd, sizeof(cmd), "S%08x,%08x#", addr, count); + if (write(fd, cmd, strlen(cmd)) != strlen(cmd)) + return false; + if (write(fd, buffer, count) != count) + return false; + buffer += count; + size -= count; + } + return true; +} diff --git a/comm.h b/comm.h new file mode 100644 index 0000000..747b5f6 --- /dev/null +++ b/comm.h @@ -0,0 +1,32 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#ifndef COMM_H_ +#define COMM_H_ + +#include +#include + +extern int samba_open(const char* device); + +extern void samba_close(int fd); + +extern bool samba_read_word(int fd, uint32_t addr, uint32_t* value); + +extern bool samba_write_word(int fd, uint32_t addr, uint32_t value); + +extern bool samba_read(int fd, uint8_t* buffer, uint32_t addr, uint32_t size); + +extern bool samba_write(int fd, uint8_t* buffer, uint32_t addr, uint32_t size); + +#endif /* COMM_H_ */ diff --git a/eefc.c b/eefc.c new file mode 100644 index 0000000..5be970c --- /dev/null +++ b/eefc.c @@ -0,0 +1,349 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#include +#include +#include "chipid.h" +#include "comm.h" +#include "eefc.h" +#include "utils.h" + +#define PAGE_SIZE 512 + +#define EEFC_FMR 0x00000000 +#define EEFC_FCR 0x00000004 +#define EEFC_FSR 0x00000008 +#define EEFC_FRR 0x0000000c + +#define EEFC_FCR_FKEY (0x5a << 24) +#define EEFC_FCR_FCMD_GETD 0x00 // Get Flash descriptor +#define EEFC_FCR_FCMD_WP 0x01 // Write page +#define EEFC_FCR_FCMD_WPL 0x02 // Write page and lock +#define EEFC_FCR_FCMD_EWP 0x03 // Erase page and write page +#define EEFC_FCR_FCMD_EWPL 0x04 // Erase page and write page then lock +#define EEFC_FCR_FCMD_EA 0x05 // Erase all +#define EEFC_FCR_FCMD_EPA 0x07 // Erase pages +#define EEFC_FCR_FCMD_SLB 0x08 // Set lock bit +#define EEFC_FCR_FCMD_CLB 0x09 // Clear lock bit +#define EEFC_FCR_FCMD_GLB 0x0A // Get lock bit +#define EEFC_FCR_FCMD_SGPB 0x0B // Set GPNVM bit +#define EEFC_FCR_FCMD_CGPB 0x0C // Clear GPNVM bit +#define EEFC_FCR_FCMD_GGPB 0x0D // Get GPNVM bit + +#define EEFC_FSR_FRDY (1 << 0) +#define EEFC_FSR_CMDE (1 << 1) +#define EEFC_FSR_FLOCKE (1 << 2) +#define EEFC_FSR_FLERR (1 << 3) + +static bool eefc_wait_ready(int fd, const struct _chip* chip, uint32_t* status) +{ + uint32_t value; + do { + if (!samba_read_word(fd, chip->eefc_base + EEFC_FSR, &value)) + return false; + } while (!(value & EEFC_FSR_FRDY)); + if (status) + *status = value; + return true; +} + +static bool eefc_read_result(int fd, const struct _chip* chip, uint32_t* result) +{ + return samba_read_word(fd, chip->eefc_base + EEFC_FRR, result); +} + +static bool eefc_send_command(int fd, const struct _chip* chip, uint8_t cmd, + uint16_t arg, uint32_t* status) +{ + if (!samba_write_word(fd, chip->eefc_base + EEFC_FCR, + EEFC_FCR_FKEY | (arg << 8) | cmd)) + return false; + + if (!eefc_wait_ready(fd, chip, status)) + return false; + + return true; +} + +bool eefc_read_flash_info(int fd, const struct _chip* chip, + struct _eefc_locks* locks) +{ + // send GETD command + if (!eefc_send_command(fd, chip, EEFC_FCR_FCMD_GETD, 0, NULL)) + return false; + + // flash ID (discarded) + uint32_t flash_id; + if (!eefc_read_result(fd, chip, &flash_id)) + return false; + + // flash size + uint32_t flash_size; + if (!eefc_read_result(fd, chip, &flash_size)) + return false; + if (flash_size != chip->flash_size * 1024) { + fprintf(stderr, "Invalid flash size: detected %d bytes but expected %d bytes\n", + flash_size, chip->flash_size * 1024); + return false; + } + + // page size + uint32_t page_size; + if (!eefc_read_result(fd, chip, &page_size)) + return false; + if (page_size != PAGE_SIZE) { + fprintf(stderr, "Invalid page size: detected %d bytes but expected %d bytes\n", + page_size, PAGE_SIZE); + return false; + } + + // number of planes and plane sizes (discarded) + uint32_t nb_planes, plane_size; + if (!eefc_read_result(fd, chip, &nb_planes)) + return false; + for (int i = 0; i < nb_planes; i++) + if (!eefc_read_result(fd, chip, &plane_size)) + return false; + + // number of locks and lock sizes + if (!eefc_read_result(fd, chip, &locks->count)) + return false; + if (locks->count > MAX_EEFC_LOCKS) + return false; + for (int i = 0; i < locks->count; i++) + if (!eefc_read_result(fd, chip, &locks->size[i])) + return false; + + return true; +} + +static bool set_page_lock(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t lock, bool enable) +{ + if (lock > locks->count) + return false; + + uint8_t cmd = enable ? EEFC_FCR_FCMD_SLB : EEFC_FCR_FCMD_CLB; + return eefc_send_command(fd, chip, cmd, lock, NULL); +} + +bool eefc_lock_page(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t lock) +{ + return set_page_lock(fd, chip, locks, lock, true); +} + +bool eefc_unlock_page(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t lock) +{ + return set_page_lock(fd, chip, locks, lock, false); +} + +static bool set_lock(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t addr, uint32_t size, + bool enable) +{ + if (addr + size > chip->flash_size * 1024) + return false; + + uint32_t addr_end = addr + size; + + uint32_t offset = 0; + for (int lock = 0; lock < locks->count; lock++) { + uint32_t next_offset = offset + locks->size[lock]; + if (addr >= offset && addr < next_offset) { + if (!set_page_lock(fd, chip, locks, lock, enable)) + return false; + addr = next_offset; + if (addr >= addr_end) + return true; + } + offset = next_offset; + } + return false; +} + +bool eefc_lock(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t addr, uint32_t size) +{ + return set_lock(fd, chip, locks, addr, size, true); +} + +bool eefc_unlock(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t addr, uint32_t size) +{ + return set_lock(fd, chip, locks, addr, size, false); +} + +bool eefc_erase_all(int fd, const struct _chip* chip) +{ + // send erase all command to flash controller + uint32_t status; + if (!eefc_send_command(fd, chip, EEFC_FCR_FCMD_EA, 0, &status)) + return false; + if (status & EEFC_FSR_FLOCKE) { + fprintf(stderr, "Erase error: at least one page is locked\n"); + return false; + } + if (status & EEFC_FSR_FLERR) { + fprintf(stderr, "Erase error: flash error\n"); + return false; + } + return true; +} + +bool eefc_erase_16pages(int fd, const struct _chip* chip, + uint32_t first_page) +{ + uint32_t arg; + + if (first_page & 15) { + fprintf(stderr, "Erase pages error: first page must be multiple of 16\n"); + return false; + } + + arg = (first_page & ~15) | 2; + + // send erase pages command to flash controller + uint32_t status; + if (!eefc_send_command(fd, chip, EEFC_FCR_FCMD_EPA, arg, &status)) + return false; + if (status & EEFC_FSR_FLOCKE) { + fprintf(stderr, "Erase pages error: at least one page is locked\n"); + return false; + } + if (status & EEFC_FSR_FLERR) { + fprintf(stderr, "Erase pages error: flash error\n"); + return false; + } + + return true; +} + +bool eefc_read(int fd, const struct _chip* chip, + uint8_t* buffer, uint32_t addr, uint32_t size) +{ + if (addr + size > chip->flash_size * 1024) + return false; + + return samba_read(fd, buffer, chip->flash_addr + addr, size); +} + +bool eefc_write(int fd, const struct _chip* chip, + uint8_t* buffer, uint32_t addr, uint32_t size) +{ + if (addr + size > chip->flash_size * 1024) + return false; + + while (size > 0) { + uint16_t page = addr / PAGE_SIZE; + uint32_t head = addr & (PAGE_SIZE - 1); + uint32_t count = MIN(size, PAGE_SIZE - head); + + // write to latch buffer + // we cannot use the SAM-BA Monitor send command because it + // does byte writes and the flash controller needs word writes + uint32_t* wbuffer = (uint32_t*)buffer; + for (uint32_t i = 0; i < (count + 3) / 4; i++) + if (!samba_write_word(fd, chip->flash_addr + addr + i * 4, wbuffer[i])) + return false; + + // send write command to flash controller + uint32_t status; + if (!eefc_send_command(fd, chip, EEFC_FCR_FCMD_WP, page, &status)) + return false; + if (status & EEFC_FSR_FLOCKE) { + fprintf(stderr, "Write error on page %d: page locked\n", page); + return false; + } + if (status & EEFC_FSR_FLERR) { + fprintf(stderr, "Write error on page %d: flash error\n", page); + return false; + } + + buffer += count; + addr += count; + size -= count; + } + + return true; +} + +extern bool eefc_get_gpnvm(int fd, const struct _chip* chip, + uint8_t gpnvm, bool* value) +{ + if (gpnvm >= chip->gpnvm) { + fprintf(stderr, "Get GPNVM%d error: invalid GPNVM\n", gpnvm); + return false; + } + + // send Get GPNVM command to flash controller + uint32_t status; + if (!eefc_send_command(fd, chip, EEFC_FCR_FCMD_GGPB, gpnvm, &status)) + return false; + if (status & EEFC_FSR_CMDE) { + fprintf(stderr, "Get GPNVM%d error: command error\n", gpnvm); + return false; + } + + uint32_t bits; + if (!eefc_read_result(fd, chip, &bits)) + return false; + *value = bits & (1 << gpnvm); + + return true; +} + +extern bool eefc_set_gpnvm(int fd, const struct _chip* chip, uint8_t gpnvm) +{ + if (gpnvm >= chip->gpnvm) { + fprintf(stderr, "Set GPNVM%d error: invalid GPNVM\n", gpnvm); + return false; + } + + // send Set GPNVM command to flash controller + uint32_t status; + if (!eefc_send_command(fd, chip, EEFC_FCR_FCMD_SGPB, gpnvm, &status)) + return false; + if (status & EEFC_FSR_CMDE) { + fprintf(stderr, "Set GPNVM%d error: command error\n", gpnvm); + return false; + } + if (status & EEFC_FSR_FLERR) { + fprintf(stderr, "Set GPNVM%d error: flash error\n", gpnvm); + return false; + } + return true; +} + +extern bool eefc_clear_gpnvm(int fd, const struct _chip* chip, uint8_t gpnvm) +{ + if (gpnvm >= chip->gpnvm) { + fprintf(stderr, "Clear GPNVM%d error: invalid GPNVM\n", gpnvm); + return false; + } + + // send Clear GPNVM command to flash controller + uint32_t status; + if (!eefc_send_command(fd, chip, EEFC_FCR_FCMD_CGPB, gpnvm, &status)) + return false; + if (status & EEFC_FSR_CMDE) { + fprintf(stderr, "Clear GPNVM%d error: command error\n", gpnvm); + return false; + } + if (status & EEFC_FSR_FLERR) { + fprintf(stderr, "Clear GPNVM%d error: flash error\n", gpnvm); + return false; + } + return true; +} diff --git a/eefc.h b/eefc.h new file mode 100644 index 0000000..c5642c0 --- /dev/null +++ b/eefc.h @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#ifndef EEFC_H_ +#define EEFC_H_ + +#include +#include + +#define MAX_EEFC_LOCKS 256 + +struct _chip; + +struct _eefc_locks { + uint32_t count; + uint32_t size[MAX_EEFC_LOCKS]; +}; + +extern bool eefc_read_flash_info(int fd, const struct _chip* chip, + struct _eefc_locks* locks); + +extern bool eefc_lock_page(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t page); + +extern bool eefc_unlock_page(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t page); + +extern bool eefc_lock(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t addr, uint32_t size); + +extern bool eefc_unlock(int fd, const struct _chip* chip, + const struct _eefc_locks* locks, uint32_t addr, uint32_t size); + +extern bool eefc_erase_all(int fd, const struct _chip* chip); + +extern bool eefc_erase_16pages(int fd, const struct _chip* chip, + uint32_t first_page); + +extern bool eefc_read(int fd, const struct _chip* chip, + uint8_t* buffer, uint32_t addr, uint32_t size); + +extern bool eefc_write(int fd, const struct _chip* chip, + uint8_t* buffer, uint32_t addr, uint32_t size); + +extern bool eefc_get_gpnvm(int fd, const struct _chip* chip, + uint8_t gpnvm, bool* value); + +extern bool eefc_set_gpnvm(int fd, const struct _chip* chip, uint8_t gpnvm); + +extern bool eefc_clear_gpnvm(int fd, const struct _chip* chip, uint8_t gpnvm); + +#endif /* EEFC_H_ */ diff --git a/usamba.c b/usamba.c new file mode 100644 index 0000000..448f02b --- /dev/null +++ b/usamba.c @@ -0,0 +1,376 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#include +#include +#include +#include +#include +#include +#include +#include "chipid.h" +#include "comm.h" +#include "eefc.h" +#include "utils.h" + +#define BUFFER_SIZE 8192 + +static bool get_file_size(const char* filename, uint32_t* size) +{ + struct stat st; + + if (stat(filename, &st) != 0) { + fprintf(stderr, "Could not access '%s'\n", filename); + return false; + } + + *size = st.st_size; + return true; +} + +static bool read_flash(int fd, const struct _chip* chip, uint32_t addr, uint32_t size, const char* filename) +{ + FILE* file = fopen(filename, "wb"); + if (!file) { + fprintf(stderr, "Could not open '%s' for writing\n", filename); + return false; + } + + uint8_t buffer[BUFFER_SIZE]; + uint32_t total = 0; + while (total < size) { + uint32_t count = MIN(BUFFER_SIZE, size - total); + if (!eefc_read(fd, chip, buffer, addr, count)) { + fclose(file); + return false; + } + + if (fwrite(buffer, 1, count, file) != count) { + fprintf(stderr, "Error while writing to '%s'", filename); + fclose(file); + return false; + } + + total += count; + addr += count; + } + + fclose(file); + return true; +} + +static bool write_flash(int fd, const struct _chip* chip, const char* filename, uint32_t addr, uint32_t size) +{ + FILE* file = fopen(filename, "rb"); + if (!file) { + fprintf(stderr, "Could not open '%s' for reading\n", filename); + return false; + } + + uint8_t buffer[BUFFER_SIZE]; + uint32_t total = 0; + while (total < size) { + uint32_t count = MIN(BUFFER_SIZE, size - total); + if (fread(buffer, 1, count, file) != count) { + fprintf(stderr, "Error while reading from '%s'", filename); + fclose(file); + return false; + } + + if (!eefc_write(fd, chip, buffer, addr, count)) { + fclose(file); + return false; + } + + total += count; + addr += count; + } + + fclose(file); + return true; +} + +static bool verify_flash(int fd, const struct _chip* chip, const char* filename, uint32_t addr, uint32_t size) +{ + FILE* file = fopen(filename, "rb"); + if (!file) { + fprintf(stderr, "Could not open '%s' for reading\n", filename); + return false; + } + + uint8_t buffer1[BUFFER_SIZE]; + uint8_t buffer2[BUFFER_SIZE]; + uint32_t total = 0; + while (total < size) { + uint32_t count = MIN(BUFFER_SIZE, size - total); + if (fread(buffer1, 1, count, file) != count) { + fprintf(stderr, "Error while reading from '%s'", filename); + fclose(file); + return false; + } + + if (!eefc_read(fd, chip, buffer2, addr, count)) { + fclose(file); + return false; + } + + for (int i = 0; i < BUFFER_SIZE; i++) { + if (buffer1[i] != buffer2[i]) { + fprintf(stderr, "Verify failed, first difference at offset %d", addr + i); + fclose(file); + return false; + } + } + + total += count; + addr += count; + } + + fclose(file); + return true; +} + +static void usage(char* prog) +{ + printf("Usage: %s (read|write|verify|erase-all|gpnvm) [args]*\n", prog); + printf("\n"); + printf("- Reading Flash:\n"); + printf(" %s read \n", prog); + printf("\n"); + printf("- Writing Flash:\n"); + printf(" %s write \n", prog); + printf("\n"); + printf("- Verify Flash:\n"); + printf(" %s verify \n", prog); + printf("\n"); + printf("- Erasing Flash:\n"); + printf(" %s erase-all\n", prog); + printf("\n"); + printf("- Getting/Setting/Clearing GPNVM:\n"); + printf(" %s gpnvm (get|set|clear) \n", prog); + printf("\n"); + printf("for all commands:\n"); + printf(" is the USB device node for the SAM-BA bootloader, for\n"); + printf(" example '/dev/ttyACM0'\n"); + printf(" and can be specified in decimal, hexadecimal (if\n"); + printf(" prefixed by '0x') or octal (if prefixed by 0).\n"); +} + +enum { + CMD_READ = 1, + CMD_WRITE = 2, + CMD_VERIFY = 3, + CMD_ERASE_ALL = 4, + CMD_GPNVM_GET = 5, + CMD_GPNVM_SET = 6, + CMD_GPNVM_CLEAR = 7, +}; + +int main(int argc, char *argv[]) +{ + int fd = -1; + int command = 0; + char* port = NULL; + char* filename = NULL; + uint32_t addr = 0; + uint32_t size = 0; + bool err = true; + + // parse command line + if (argc < 3) { + fprintf(stderr, "Error: not enough arguments\n"); + usage(argv[0]); + return -1; + } + port = argv[1]; + char* cmd_text = argv[2]; + if (!strcmp(cmd_text, "read")) { + if (argc == 6) { + command = CMD_READ; + filename = argv[3]; + addr = strtol(argv[4], NULL, 0); + size = strtol(argv[5], NULL, 0); + err = false; + } else { + fprintf(stderr, "Error: invalid number of arguments\n"); + } + } else if (!strcmp(cmd_text, "write")) { + if (argc == 5) { + command = CMD_WRITE; + filename = argv[3]; + addr = strtol(argv[4], NULL, 0); + err = false; + } else { + fprintf(stderr, "Error: invalid number of arguments\n"); + } + } else if (!strcmp(cmd_text, "verify")) { + if (argc == 5) { + command = CMD_VERIFY; + filename = argv[3]; + addr = strtol(argv[4], NULL, 0); + err = false; + } else { + fprintf(stderr, "Error: invalid number of arguments\n"); + } + } else if (!strcmp(cmd_text, "erase-all")) { + if (argc == 3) { + command = CMD_ERASE_ALL; + err = false; + } else { + fprintf(stderr, "Error: invalid number of arguments\n"); + } + } else if (!strcmp(cmd_text, "gpnvm")) { + if (argc == 5) { + if (!strcmp(argv[3], "get")) { + command = CMD_GPNVM_GET; + addr = strtol(argv[4], NULL, 0); + err = false; + } else if (!strcmp(argv[3], "set")) { + command = CMD_GPNVM_SET; + addr = strtol(argv[4], NULL, 0); + err = false; + } else if (!strcmp(argv[3], "clear")) { + command = CMD_GPNVM_CLEAR; + addr = strtol(argv[4], NULL, 0); + err = false; + } else { + fprintf(stderr, "Error: unknown GPNVM command '%s'\n", argv[3]); + } + } else { + fprintf(stderr, "Error: invalid number of arguments\n"); + } + } else { + fprintf(stderr, "Error: unknown command '%s'\n", cmd_text); + } + if (err) { + usage(argv[0]); + return -1; + } + + err = true; + + printf("Port: %s\n", port); + fd = samba_open(port); + if (fd < 0) + return -1; + + // Identify chip + const struct _chip* chip; + if (!chipid_identity_serie(fd, &chip)) { + fprintf(stderr, "Could not identify chip\n"); + goto exit; + } + printf("Device: Atmel %s\n", chip->name); + + // Read and check flash information + struct _eefc_locks locks; + if (!eefc_read_flash_info(fd, chip, &locks)) { + fprintf(stderr, "Could not read flash information\n"); + goto exit; + } + printf("Flash Size: %uKB\n", chip->flash_size); + + // Execute command + switch (command) { + case CMD_READ: + { + printf("Reading %d bytes at 0x%08x to file '%s'\n", size, addr, filename); + if (read_flash(fd, chip, addr, size, filename)) { + err = false; + } + break; + } + + case CMD_WRITE: + { + if (get_file_size(filename, &size)) { + printf("Unlocking %d bytes at 0x%08x\n", size, addr); + if (eefc_unlock(fd, chip, &locks, addr, size)) { + printf("Writing %d bytes at 0x%08x from file '%s'\n", size, addr, filename); + if (write_flash(fd, chip, filename, addr, size)) { + err = false; + } + } + } + break; + } + + case CMD_VERIFY: + { + if (get_file_size(filename, &size)) { + printf("Verifying %d bytes at 0x%08x with file '%s'\n", size, addr, filename); + if (verify_flash(fd, chip, filename, addr, size)) { + err = false; + } + } + break; + } + + case CMD_ERASE_ALL: + { + printf("Unlocking all pages\n"); + if (eefc_unlock(fd, chip, &locks, 0, chip->flash_size * 1024)) { + printf("Erasing all pages\n"); + if (eefc_erase_all(fd, chip)) { + err = false; + } + } + break; + } + + case CMD_GPNVM_GET: + { + printf("Getting GPNVM%d\n", addr); + bool value; + if (eefc_get_gpnvm(fd, chip, addr, &value)) { + printf("GPNVM%d is %s\n", addr, value ? "set" : "clear"); + err = false; + } + break; + } + + case CMD_GPNVM_SET: + { + if (!addr && !getenv("GPNVM0_CONFIRM")) { + fprintf(stderr, "To avoid setting the security bit (GPNVM0) by mistake, an additional\n"); + fprintf(stderr, "confirmation is required: please add a 'GPNVM0_CONFIRM' environment\n"); + fprintf(stderr, "variable with any value and try again.\n"); + } else { + printf("Setting GPNVM%d\n", addr); + if (eefc_set_gpnvm(fd, chip, addr)) { + err = false; + } + } + break; + } + + case CMD_GPNVM_CLEAR: + { + printf("Clearing GPNVM%d\n", addr); + if (eefc_clear_gpnvm(fd, chip, addr)) { + err = false; + } + break; + } + } + +exit: + fflush(stdout); + samba_close(fd); + if (err) { + fprintf(stderr, "Operation failed\n"); + return -1; + } else { + return 0; + } +} diff --git a/utils.h b/utils.h new file mode 100644 index 0000000..f1d99e9 --- /dev/null +++ b/utils.h @@ -0,0 +1,21 @@ +/* + * Copyright (c) 2015-2016, Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + */ + +#ifndef UTILS_H_ +#define UTILS_H_ + +#define ARRAY_SIZE(x) (sizeof(x)/sizeof(*(x))) + +#define MIN(a,b) ((a)<(b)?(a):(b)) + +#endif /* UTILS_H_ */