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target_atmel_cm4.c
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target_atmel_cm4.c
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/*
* Copyright (c) 2013-2017, Alex Taradov <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*- Includes ----------------------------------------------------------------*/
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include "target.h"
#include "edbg.h"
#include "dap.h"
/*- Definitions -------------------------------------------------------------*/
#define FLASH_START 0x00400000
#define FLASH_PAGE_SIZE 512
#define DHCSR 0xe000edf0
#define DEMCR 0xe000edfc
#define AIRCR 0xe000ed0c
#define CHIPID_CIDR 0x400e0740
#define CHIPID_EXID 0x400e0744
#define EEFC_FMR(n) (0x400e0a00 + (n) * 0x200)
#define EEFC_FCR(n) (0x400e0a04 + (n) * 0x200)
#define EEFC_FSR(n) (0x400e0a08 + (n) * 0x200)
#define EEFC_FRR(n) (0x400e0a0c + (n) * 0x200)
#define FSR_FRDY 1
#define CMD_GETD 0x5a000000
#define CMD_WP 0x5a000001
#define CMD_EPA 0x5a000007
#define CMD_EA 0x5a000005
#define CMD_SGPB 0x5a00000b
#define CMD_CGPB 0x5a00000c
#define CMD_GGPB 0x5a00000d
#define PAGES_IN_ERASE_BLOCK 16
#define GPNVM_SIZE 1
#define GPNVM_SIZE_BITS 8
/*- Types -------------------------------------------------------------------*/
typedef struct
{
uint32_t chip_id;
uint32_t chip_exid;
char *name;
uint32_t n_planes;
uint32_t flash_size;
} device_t;
/*- Variables ---------------------------------------------------------------*/
static device_t devices[] =
{
{ 0x243b09e0, 0x00000000, "SAM G51G18", 1, 256*1024 },
{ 0x243b09e8, 0x00000000, "SAM G51N18", 1, 256*1024 },
{ 0x247e0ae0, 0x00000000, "SAM G53G19 (Rev A)", 1, 512*1024 },
{ 0x247e0ae1, 0x00000000, "SAM G53G19 (Rev B)", 1, 512*1024 },
{ 0x247e0ae8, 0x00000000, "SAM G53N19 (Rev A)", 1, 512*1024 },
{ 0x247e0ae9, 0x00000000, "SAM G53N19 (Rev B)", 1, 512*1024 },
{ 0x247e0ae2, 0x00000000, "SAM G54G19 (Rev A)", 1, 512*1024 },
{ 0x247e0ae3, 0x00000000, "SAM G54G19 (Rev B)", 1, 512*1024 },
{ 0x247e0ae6, 0x00000000, "SAM G54J19 (Rev A)", 1, 512*1024 },
{ 0x247e0aea, 0x00000000, "SAM G54N19 (Rev A)", 1, 512*1024 },
{ 0x247e0aeb, 0x00000000, "SAM G54N19 (Rev B)", 1, 512*1024 },
{ 0x24470ae0, 0x00000000, "SAM G55G19", 1, 512*1024 },
{ 0x24570ae0, 0x00000000, "SAM G55J19", 1, 512*1024 },
{ 0x29970ee0, 0x00000000, "SAM4SD32B (Rev A)", 2, 1024*1024 },
{ 0x29970ee1, 0x00000000, "SAM4SD32B (Rev B)", 2, 1024*1024 },
{ 0x29a70ee0, 0x00000000, "SAM4SD32C (Rev A)", 2, 1024*1024 },
{ 0x29a70ee1, 0x00000000, "SAM4SD32C (Rev B)", 2, 1024*1024 },
{ 0x29970ce0, 0x00000000, "SAM4SD16B (Rev A)", 2, 512*1024 },
{ 0x29970ce0, 0x00000000, "SAM4SD16B (Rev B)", 2, 512*1024 },
{ 0x29a70ce0, 0x00000000, "SAM4SD16C (Rev A)", 2, 512*1024 },
{ 0x29a70ce1, 0x00000000, "SAM4SD16C (Rev B)", 2, 512*1024 },
{ 0x28970ce0, 0x00000000, "SAM4SA16B (Rev A)", 1, 1024*1024 },
{ 0x28970ce1, 0x00000000, "SAM4SA16B (Rev B)", 1, 1024*1024 },
{ 0x28a70ce0, 0x00000000, "SAM4SA16C (Rev A)", 1, 1024*1024 },
{ 0x28a70ce1, 0x00000000, "SAM4SA16C (Rev B)", 1, 1024*1024 },
{ 0x289c0ce0, 0x00000000, "SAM4S16B (Rev A)", 1, 1024*1024 },
{ 0x289c0ce1, 0x00000000, "SAM4S16B (Rev B)", 1, 1024*1024 },
{ 0x28ac0ce0, 0x00000000, "SAM4S16C (Rev A)", 1, 1024*1024 },
{ 0x28ac0ce1, 0x00000000, "SAM4S16C (Rev B)", 1, 1024*1024 },
{ 0x289c0ae0, 0x00000000, "SAM4S8B (Rev A)", 1, 512*1024 },
{ 0x289c0ae1, 0x00000000, "SAM4S8B (Rev B)", 1, 512*1024 },
{ 0x28ac0ae0, 0x00000000, "SAM4S8C (Rev A)", 1, 512*1024 },
{ 0x28ac0ae1, 0x00000000, "SAM4S8C (Rev B)", 1, 512*1024 },
{ 0x288b09e0, 0x00000000, "SAM4S4A (Rev A)", 1, 256*1024 },
{ 0x288b09e1, 0x00000000, "SAM4S4A (Rev B)", 1, 256*1024 },
{ 0x289b09e0, 0x00000000, "SAM4S4B (Rev A)", 1, 256*1024 },
{ 0x289b09e1, 0x00000000, "SAM4S4B (Rev B)", 1, 256*1024 },
{ 0x28ab09e0, 0x00000000, "SAM4S4C (Rev A)", 1, 256*1024 },
{ 0x28ab09e1, 0x00000000, "SAM4S4C (Rev B)", 1, 256*1024 },
{ 0x288b07e0, 0x00000000, "SAM4S2A (Rev A)", 1, 128*1024 },
{ 0x288b07e1, 0x00000000, "SAM4S2A (Rev B)", 1, 128*1024 },
{ 0x289b07e0, 0x00000000, "SAM4S2B (Rev A)", 1, 128*1024 },
{ 0x289b07e1, 0x00000000, "SAM4S2B (Rev B)", 1, 128*1024 },
{ 0x28ab07e0, 0x00000000, "SAM4S2C (Rev A)", 1, 128*1024 },
{ 0x28ab07e1, 0x00000000, "SAM4S2C (Rev B)", 1, 128*1024 },
{ 0xa3cc0ce0, 0x00120200, "SAM4E16E", 1, 1024*1024 },
{ 0xa3cc0ce0, 0x00120208, "SAM4E8E", 1, 512*1024 },
{ 0xa3cc0ce0, 0x00120201, "SAM4E16C", 1, 1024*1024 },
{ 0xa3cc0ce0, 0x00120209, "SAM4E8C", 1, 512*1024 },
{ 0x29460ce0, 0x00000000, "SAM4N16B (Rev A)", 1, 1024*1024 },
{ 0x29560ce0, 0x00000000, "SAM4N16C (Rev A)", 1, 1024*1024 },
{ 0x293b0ae0, 0x00000000, "SAM4N8A (Rev A)", 1, 512*1024 },
{ 0x294b0ae0, 0x00000000, "SAM4N8B (Rev A)", 1, 512*1024 },
{ 0x295b0ae0, 0x00000000, "SAM4N8C (Rev A)", 1, 512*1024 },
{ 0, 0, "", 0, 0 },
};
static device_t target_device;
static target_options_t target_options;
/*- Implementations ---------------------------------------------------------*/
//-----------------------------------------------------------------------------
static void target_select(target_options_t *options)
{
uint32_t chip_id, chip_exid;
// Stop the core
dap_write_word(DHCSR, 0xa05f0003);
dap_write_word(DEMCR, 0x00000001);
dap_write_word(AIRCR, 0x05fa0004);
chip_id = dap_read_word(CHIPID_CIDR);
chip_exid = dap_read_word(CHIPID_EXID);
for (device_t *device = devices; device->chip_id > 0; device++)
{
if (device->chip_id == chip_id && device->chip_exid == chip_exid)
{
uint32_t fl_id, fl_size, fl_page_size, fl_nb_palne, fl_nb_lock;
verbose("Target: %s\n", device->name);
for (uint32_t plane = 0; plane < device->n_planes; plane++)
{
dap_write_word(EEFC_FCR(plane), CMD_GETD);
while (0 == (dap_read_word(EEFC_FSR(plane)) & FSR_FRDY));
fl_id = dap_read_word(EEFC_FRR(plane));
check(fl_id, "Cannot read flash descriptor, check Erase pin state");
fl_size = dap_read_word(EEFC_FRR(plane));
check(fl_size == device->flash_size, "Invalid reported Flash size (%d)", fl_size);
fl_page_size = dap_read_word(EEFC_FRR(plane));
check(fl_page_size == FLASH_PAGE_SIZE, "Invalid reported page size (%d)", fl_page_size);
fl_nb_palne = dap_read_word(EEFC_FRR(plane));
for (uint32_t i = 0; i < fl_nb_palne; i++)
dap_read_word(EEFC_FRR(plane));
fl_nb_lock = dap_read_word(EEFC_FRR(plane));
for (uint32_t i = 0; i < fl_nb_lock; i++)
dap_read_word(EEFC_FRR(plane));
}
target_device = *device;
target_options = *options;
target_check_options(&target_options, device->flash_size * target_device.n_planes,
FLASH_PAGE_SIZE * PAGES_IN_ERASE_BLOCK);
return;
}
}
error_exit("unknown target device (CHIP_ID = 0x%08x)", chip_id);
}
//-----------------------------------------------------------------------------
static void target_deselect(void)
{
dap_write_word(DEMCR, 0x00000000);
dap_write_word(AIRCR, 0x05fa0004);
target_free_options(&target_options);
}
//-----------------------------------------------------------------------------
static void target_erase(void)
{
for (uint32_t plane = 0; plane < target_device.n_planes; plane++)
dap_write_word(EEFC_FCR(plane), CMD_EA);
for (uint32_t plane = 0; plane < target_device.n_planes; plane++)
while (0 == (dap_read_word(EEFC_FSR(plane)) & FSR_FRDY));
}
//-----------------------------------------------------------------------------
static void target_lock(void)
{
// It is enough to lock just one plane to lock the entire device
dap_write_word(EEFC_FCR(0), CMD_SGPB | (0 << 8));
}
//-----------------------------------------------------------------------------
static void target_program(void)
{
uint32_t addr = FLASH_START + target_options.offset;
uint32_t number_of_pages, plane, page_offset;
uint32_t offs = 0;
uint8_t *buf = target_options.file_data;
uint32_t size = target_options.file_size;
number_of_pages = (size + FLASH_PAGE_SIZE - 1) / FLASH_PAGE_SIZE;
page_offset = target_options.offset / FLASH_PAGE_SIZE;
for (uint32_t page = 0; page < number_of_pages; page += PAGES_IN_ERASE_BLOCK)
{
plane = (page + page_offset) / (target_device.flash_size / FLASH_PAGE_SIZE);
dap_write_word(EEFC_FCR(plane), CMD_EPA | (((page_offset + page) | 2) << 8));
while (0 == (dap_read_word(EEFC_FSR(plane)) & FSR_FRDY));
verbose(".");
}
verbose(",");
for (uint32_t page = 0; page < number_of_pages; page++)
{
dap_write_block(addr, &buf[offs], FLASH_PAGE_SIZE);
addr += FLASH_PAGE_SIZE;
offs += FLASH_PAGE_SIZE;
plane = (page + page_offset) / (target_device.flash_size / FLASH_PAGE_SIZE);
dap_write_word(EEFC_FCR(plane), CMD_WP | ((page + page_offset) << 8));
while (0 == (dap_read_word(EEFC_FSR(plane)) & FSR_FRDY));
verbose(".");
}
}
//-----------------------------------------------------------------------------
static void target_verify(void)
{
uint32_t addr = FLASH_START + target_options.offset;
uint32_t block_size;
uint32_t offs = 0;
uint8_t *bufb;
uint8_t *bufa = target_options.file_data;
uint32_t size = target_options.file_size;
bufb = buf_alloc(FLASH_PAGE_SIZE);
while (size)
{
dap_read_block(addr, bufb, FLASH_PAGE_SIZE);
block_size = (size > FLASH_PAGE_SIZE) ? FLASH_PAGE_SIZE : size;
for (int i = 0; i < (int)block_size; i++)
{
if (bufa[offs + i] != bufb[i])
{
verbose("\nat address 0x%x expected 0x%02x, read 0x%02x\n",
addr + i, bufa[offs + i], bufb[i]);
buf_free(bufb);
error_exit("verification failed");
}
}
addr += FLASH_PAGE_SIZE;
offs += FLASH_PAGE_SIZE;
size -= block_size;
verbose(".");
}
buf_free(bufb);
}
//-----------------------------------------------------------------------------
static void target_read(void)
{
uint32_t addr = FLASH_START + target_options.offset;
uint32_t offs = 0;
uint8_t *buf = target_options.file_data;
uint32_t size = target_options.size;
while (size)
{
dap_read_block(addr, &buf[offs], FLASH_PAGE_SIZE);
addr += FLASH_PAGE_SIZE;
offs += FLASH_PAGE_SIZE;
size -= FLASH_PAGE_SIZE;
verbose(".");
}
save_file(target_options.name, buf, target_options.size);
}
//-----------------------------------------------------------------------------
static void target_fuse(void)
{
bool read_all = (-1 == target_options.fuse_start);
uint32_t gpnvm;
uint8_t *buf = (uint8_t *)&gpnvm;
int size = (target_options.fuse_size < GPNVM_SIZE) ?
target_options.fuse_size : GPNVM_SIZE;
dap_write_word(EEFC_FCR(0), CMD_GGPB);
while (0 == (dap_read_word(EEFC_FSR(0)) & FSR_FRDY));
gpnvm = dap_read_word(EEFC_FRR(0));
if (target_options.fuse_read)
{
if (target_options.fuse_name)
{
save_file(target_options.fuse_name, buf, sizeof(gpnvm));
}
else if (read_all)
{
message("GPNVM Bits: 0x%02x\n", gpnvm);
}
else
{
uint32_t value = extract_value(buf, target_options.fuse_start,
target_options.fuse_end);
message("GPNVM Bits: 0x%02x (%d)\n", value, value);
}
}
if (target_options.fuse_write)
{
if (target_options.fuse_name)
{
for (int i = 0; i < size; i++)
buf[i] = target_options.fuse_data[i];
}
else
{
apply_value(buf, target_options.fuse_value, target_options.fuse_start,
target_options.fuse_end);
}
for (int i = 0; i < GPNVM_SIZE_BITS; i++)
{
if (gpnvm & (1 << i))
dap_write_word(EEFC_FCR(0), CMD_SGPB | (i << 8));
else
dap_write_word(EEFC_FCR(0), CMD_CGPB | (i << 8));
}
}
if (target_options.fuse_verify)
{
dap_write_word(EEFC_FCR(0), CMD_GGPB);
while (0 == (dap_read_word(EEFC_FSR(0)) & FSR_FRDY));
gpnvm = dap_read_word(EEFC_FRR(0));
if (target_options.fuse_name)
{
for (int i = 0; i < size; i++)
{
if (target_options.fuse_data[i] != buf[i])
{
message("fuse byte %d expected 0x%02x, got 0x%02x", i,
target_options.fuse_data[i], buf[i]);
error_exit("fuse verification failed");
}
}
}
else
{
uint32_t value;
if (read_all)
{
value = gpnvm;
}
else
{
value = extract_value(buf, target_options.fuse_start,
target_options.fuse_end);
}
if (target_options.fuse_value != value)
{
error_exit("fuse verification failed: expected 0x%x (%u), got 0x%x (%u)",
target_options.fuse_value, target_options.fuse_value, value, value);
}
}
}
}
//-----------------------------------------------------------------------------
target_ops_t target_atmel_cm4_ops =
{
.select = target_select,
.deselect = target_deselect,
.erase = target_erase,
.lock = target_lock,
.program = target_program,
.verify = target_verify,
.read = target_read,
.fuse = target_fuse,
};