|
- /***************************************************************************
- * Copyright (C) 2013 by Andrey Yurovsky *
- * Andrey Yurovsky <yurovsky@gmail.com> *
- * *
- * 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. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "imp.h"
-
- #include <target/cortex_m.h>
-
- /* At this time, the SAM4L Flash is available in these capacities:
- * ATSAM4Lx4xx: 256KB (512 pages)
- * ATSAM4Lx2xx: 128KB (256 pages)
- * ATSAM4Lx8xx: 512KB (1024 pages)
- */
-
- /* There are 16 lockable regions regardless of overall capacity. The number
- * of pages per sector is therefore dependant on capacity. */
- #define SAM4L_NUM_SECTORS 16
-
- /* Locations in memory map */
- #define SAM4L_FLASH ((uint32_t)0x00000000) /* Flash region */
- #define SAM4L_FLASH_USER 0x00800000 /* Flash user page region */
- #define SAM4L_FLASHCALW 0x400A0000 /* Flash controller */
- #define SAM4L_CHIPID 0x400E0740 /* Chip Identification */
-
- /* Offsets from SAM4L_FLASHCALW */
- #define SAM4L_FCR 0x00 /* Flash Control Register (RW) */
- #define SAM4L_FCMD 0x04 /* Flash Command Register (RW) */
- #define SAM4L_FSR 0x08 /* Flash Status Register (RO) */
- #define SAM4L_FPR 0x0C /* Flash Parameter Register (RO) */
- #define SAM4L_FVR 0x10 /* Flash Version Register (RO) */
- #define SAM4L_FGPFRHI 0x14 /* Flash General Purpose Register High (RO) */
- #define SAM4L_FGPFRLO 0x18 /* Flash General Purpose Register Low (RO) */
-
- /* Offsets from SAM4L_CHIPID */
- #define SAM4L_CIDR 0x00 /* Chip ID Register (RO) */
- #define SAM4L_EXID 0x04 /* Chip ID Extension Register (RO) */
-
- /* Flash commands (for SAM4L_FCMD), see Table 14-5 */
- #define SAM4L_FCMD_NOP 0 /* No Operation */
- #define SAM4L_FCMD_WP 1 /* Write Page */
- #define SAM4L_FCMD_EP 2 /* Erase Page */
- #define SAM4L_FCMD_CPB 3 /* Clear Page Buffer */
- #define SAM4L_FCMD_LP 4 /* Lock region containing given page */
- #define SAM4L_FCMD_UP 5 /* Unlock region containing given page */
- #define SAM4L_FCMD_EA 6 /* Erase All */
- #define SAM4L_FCMD_WGPB 7 /* Write general-purpose fuse bit */
- #define SAM4L_FCMD_EGPB 8 /* Erase general-purpose fuse bit */
- #define SAM4L_FCMD_SSB 9 /* Set security fuses */
- #define SAM4L_FCMD_PGPFB 10 /* Program general-purpose fuse byte */
- #define SAM4L_FCMD_EAGPF 11 /* Erase all general-purpose fuse bits */
- #define SAM4L_FCMD_QPR 12 /* Quick page read */
- #define SAM4L_FCMD_WUP 13 /* Write user page */
- #define SAM4L_FCMD_EUP 14 /* Erase user page */
- #define SAM4L_FCMD_QPRUP 15 /* Quick page read (user page) */
- #define SAM4L_FCMD_HSEN 16 /* High speed mode enable */
- #define SAM4L_FCMD_HSDIS 17 /* High speed mode disable */
-
- #define SAM4L_FMCD_CMDKEY 0xA5UL /* 'key' to issue commands, see 14.10.2 */
-
-
- /* SMAP registers and bits */
- #define SMAP_BASE 0x400A3000
-
- #define SMAP_SCR (SMAP_BASE + 8)
- #define SMAP_SCR_HCR (1 << 1)
-
-
- struct sam4l_chip_info {
- uint32_t id;
- uint32_t exid;
- const char *name;
- };
-
- /* These are taken from Table 9-1 in 42023E-SAM-07/2013 */
- static const struct sam4l_chip_info sam4l_known_chips[] = {
- { 0xAB0B0AE0, 0x1400000F, "ATSAM4LC8C" },
- { 0xAB0A09E0, 0x0400000F, "ATSAM4LC4C" },
- { 0xAB0A07E0, 0x0400000F, "ATSAM4LC2C" },
- { 0xAB0B0AE0, 0x1300000F, "ATSAM4LC8B" },
- { 0xAB0A09E0, 0x0300000F, "ATSAM4LC4B" },
- { 0xAB0A07E0, 0x0300000F, "ATSAM4LC2B" },
- { 0xAB0B0AE0, 0x1200000F, "ATSAM4LC8A" },
- { 0xAB0A09E0, 0x0200000F, "ATSAM4LC4A" },
- { 0xAB0A07E0, 0x0200000F, "ATSAM4LC2A" },
- { 0xAB0B0AE0, 0x14000002, "ATSAM4LS8C" },
- { 0xAB0A09E0, 0x04000002, "ATSAM4LS4C" },
- { 0xAB0A07E0, 0x04000002, "ATSAM4LS2C" },
- { 0xAB0B0AE0, 0x13000002, "ATSAM4LS8B" },
- { 0xAB0A09E0, 0x03000002, "ATSAM4LS4B" },
- { 0xAB0A07E0, 0x03000002, "ATSAM4LS2B" },
- { 0xAB0B0AE0, 0x12000002, "ATSAM4LS8A" },
- { 0xAB0A09E0, 0x02000002, "ATSAM4LS4A" },
- { 0xAB0A07E0, 0x02000002, "ATSAM4LS2A" },
- };
-
- /* Meaning of SRAMSIZ field in CHIPID, see 9.3.1 in 42023E-SAM-07/2013 */
- static const uint16_t sam4l_ram_sizes[16] = { 48, 1, 2, 6, 24, 4, 80, 160, 8, 16, 32, 64, 128, 256, 96, 512 };
-
- /* Meaning of PSZ field in FPR, see 14.10.4 in 42023E-SAM-07/2013 */
- static const uint16_t sam4l_page_sizes[8] = { 32, 64, 128, 256, 512, 1024, 2048, 4096 };
-
- struct sam4l_info {
- const struct sam4l_chip_info *details;
-
- uint32_t flash_kb;
- uint32_t ram_kb;
- uint32_t page_size;
- int num_pages;
- int sector_size;
- int pages_per_sector;
-
- bool probed;
- struct target *target;
- struct sam4l_info *next;
- };
-
- static struct sam4l_info *sam4l_chips;
-
- static int sam4l_flash_wait_until_ready(struct target *target)
- {
- volatile unsigned int t = 0;
- uint32_t st;
- int res;
-
- /* Poll the status register until the FRDY bit is set */
- do {
- res = target_read_u32(target, SAM4L_FLASHCALW + SAM4L_FSR, &st);
- } while (res == ERROR_OK && !(st & (1<<0)) && ++t < 10);
-
- return res;
- }
-
- static int sam4l_flash_check_error(struct target *target, uint32_t *err)
- {
- uint32_t st;
- int res;
-
- res = target_read_u32(target, SAM4L_FLASHCALW + SAM4L_FSR, &st);
-
- if (res == ERROR_OK)
- *err = st & ((1<<3) | (1<<2)); /* grab PROGE and LOCKE bits */
-
- return res;
- }
-
- static int sam4l_flash_command(struct target *target, uint8_t cmd, int page)
- {
- int res;
- uint32_t fcmd;
- uint32_t err;
-
- res = sam4l_flash_wait_until_ready(target);
- if (res != ERROR_OK)
- return res;
-
- if (page >= 0) {
- /* Set the page number. For some commands, the page number is just an
- * argument (ex: fuse bit number). */
- fcmd = (SAM4L_FMCD_CMDKEY << 24) | ((page & 0xFFFF) << 8) | (cmd & 0x3F);
- } else {
- /* Reuse the page number that was read from the flash command register. */
- res = target_read_u32(target, SAM4L_FLASHCALW + SAM4L_FCMD, &fcmd);
- if (res != ERROR_OK)
- return res;
-
- fcmd &= ~0x3F; /* clear out the command code */
- fcmd |= (SAM4L_FMCD_CMDKEY << 24) | (cmd & 0x3F);
- }
-
- /* Send the command */
- res = target_write_u32(target, SAM4L_FLASHCALW + SAM4L_FCMD, fcmd);
- if (res != ERROR_OK)
- return res;
-
- res = sam4l_flash_check_error(target, &err);
- if (res != ERROR_OK)
- return res;
-
- if (err != 0)
- LOG_ERROR("%s got error status 0x%08" PRIx32, __func__, err);
-
- res = sam4l_flash_wait_until_ready(target);
-
- return res;
- }
-
- FLASH_BANK_COMMAND_HANDLER(sam4l_flash_bank_command)
- {
- struct sam4l_info *chip = sam4l_chips;
-
- while (chip) {
- if (chip->target == bank->target)
- break;
- chip = chip->next;
- }
-
- if (!chip) {
- /* Create a new chip */
- chip = calloc(1, sizeof(*chip));
- if (!chip)
- return ERROR_FAIL;
-
- chip->target = bank->target;
- chip->probed = false;
-
- bank->driver_priv = chip;
-
- /* Insert it into the chips list (at head) */
- chip->next = sam4l_chips;
- sam4l_chips = chip;
- }
-
- if (bank->base != SAM4L_FLASH) {
- LOG_ERROR("Address 0x%08" PRIx32 " invalid bank address (try 0x%08" PRIx32
- "[at91sam4l series] )",
- bank->base, SAM4L_FLASH);
- return ERROR_FAIL;
- }
-
- return ERROR_OK;
- }
-
- static const struct sam4l_chip_info *sam4l_find_chip_name(uint32_t id, uint32_t exid)
- {
- unsigned int i;
-
- id &= ~0xF;
-
- for (i = 0; i < ARRAY_SIZE(sam4l_known_chips); i++) {
- if (sam4l_known_chips[i].id == id && sam4l_known_chips[i].exid == exid)
- return &sam4l_known_chips[i];
- }
-
- return NULL;
- }
-
- static int sam4l_check_page_erased(struct flash_bank *bank, uint32_t pn,
- bool *is_erased_p)
- {
- int res;
- uint32_t st;
-
- /* Issue a quick page read to verify that we've erased this page */
- res = sam4l_flash_command(bank->target, SAM4L_FCMD_QPR, pn);
- if (res != ERROR_OK) {
- LOG_ERROR("Quick page read %" PRIu32 " failed", pn);
- return res;
- }
-
- /* Retrieve the flash status */
- res = target_read_u32(bank->target, SAM4L_FLASHCALW + SAM4L_FSR, &st);
- if (res != ERROR_OK) {
- LOG_ERROR("Couldn't read erase status");
- return res;
- }
-
- /* Is the page in question really erased? */
- *is_erased_p = !!(st & (1<<5));
-
- return ERROR_OK;
- }
-
- static int sam4l_probe(struct flash_bank *bank)
- {
- uint32_t id, exid, param;
- int res;
- struct sam4l_info *chip = (struct sam4l_info *)bank->driver_priv;
-
- if (chip->probed)
- return ERROR_OK;
-
- res = target_read_u32(bank->target, SAM4L_CHIPID + SAM4L_CIDR, &id);
- if (res != ERROR_OK) {
- LOG_ERROR("Couldn't read chip ID");
- return res;
- }
-
- res = target_read_u32(bank->target, SAM4L_CHIPID + SAM4L_EXID, &exid);
- if (res != ERROR_OK) {
- LOG_ERROR("Couldn't read extended chip ID");
- return res;
- }
-
- chip->details = sam4l_find_chip_name(id, exid);
-
- /* The RAM capacity is in a lookup table. */
- chip->ram_kb = sam4l_ram_sizes[0xF & (id >> 16)];
-
- switch (0xF & (id >> 8)) {
- case 0x07:
- chip->flash_kb = 128;
- break;
- case 0x09:
- chip->flash_kb = 256;
- break;
- case 0x0A:
- chip->flash_kb = 512;
- break;
- default:
- LOG_ERROR("Unknown flash size (chip ID is %08" PRIx32 "), assuming 128K", id);
- chip->flash_kb = 128;
- break;
- }
-
- /* Retrieve the Flash parameters */
- res = target_read_u32(bank->target, SAM4L_FLASHCALW + SAM4L_FPR, ¶m);
- if (res != ERROR_OK) {
- LOG_ERROR("Couldn't read Flash parameters");
- return res;
- }
-
- /* Fetch the page size from the parameter register. Technically the flash
- * capacity is there too though the manual mentions that not all parts will
- * have it set so we use the Chip ID capacity information instead. */
- chip->page_size = sam4l_page_sizes[0x7 & (param >> 8)];
- assert(chip->page_size);
- chip->num_pages = chip->flash_kb * 1024 / chip->page_size;
-
- chip->sector_size = (chip->flash_kb * 1024) / SAM4L_NUM_SECTORS;
- chip->pages_per_sector = chip->sector_size / chip->page_size;
-
- /* Make sure the bank size is correct */
- bank->size = chip->flash_kb * 1024;
-
- /* Allocate the sector table. */
- bank->num_sectors = SAM4L_NUM_SECTORS;
- bank->sectors = calloc(bank->num_sectors, (sizeof((bank->sectors)[0])));
- if (!bank->sectors)
- return ERROR_FAIL;
-
- /* Fill out the sector information: all SAM4L sectors are the same size and
- * there is always a fixed number of them. */
- for (int i = 0; i < bank->num_sectors; i++) {
- bank->sectors[i].size = chip->sector_size;
- bank->sectors[i].offset = i * chip->sector_size;
- /* mark as unknown */
- bank->sectors[i].is_erased = -1;
- bank->sectors[i].is_protected = -1;
- }
-
- /* Done */
- chip->probed = true;
-
- LOG_INFO("SAM4L MCU: %s (Rev %c) (%" PRIu32 "KB Flash with %d %" PRId32 "B pages, %" PRIu32 "KB RAM)",
- chip->details ? chip->details->name : "unknown", (char)('A' + (id & 0xF)),
- chip->flash_kb, chip->num_pages, chip->page_size, chip->ram_kb);
-
- return ERROR_OK;
- }
-
- static int sam4l_protect_check(struct flash_bank *bank)
- {
- int res;
- uint32_t st;
- struct sam4l_info *chip = (struct sam4l_info *)bank->driver_priv;
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
-
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (!chip->probed) {
- if (sam4l_probe(bank) != ERROR_OK)
- return ERROR_FLASH_BANK_NOT_PROBED;
- }
-
- res = target_read_u32(bank->target, SAM4L_FLASHCALW + SAM4L_FSR, &st);
- if (res != ERROR_OK)
- return res;
-
- st >>= 16; /* There are 16 lock region bits in the upper half word */
- for (int i = 0; i < bank->num_sectors; i++)
- bank->sectors[i].is_protected = !!(st & (1<<i));
-
- return ERROR_OK;
- }
-
- static int sam4l_protect(struct flash_bank *bank, int set, int first, int last)
- {
- struct sam4l_info *chip = sam4l_chips;
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
-
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (!chip->probed) {
- if (sam4l_probe(bank) != ERROR_OK)
- return ERROR_FLASH_BANK_NOT_PROBED;
- }
-
- /* Make sure the pages make sense. */
- if (first >= bank->num_sectors || last >= bank->num_sectors) {
- LOG_ERROR("Protect range %d - %d not valid (%d sectors total)", first, last,
- bank->num_sectors);
- return ERROR_FAIL;
- }
-
- /* Try to lock or unlock each sector in the range. This is done by locking
- * a region containing one page in that sector, we arbitrarily choose the 0th
- * page in the sector. */
- for (int i = first; i <= last; i++) {
- int res;
-
- res = sam4l_flash_command(bank->target,
- set ? SAM4L_FCMD_LP : SAM4L_FCMD_UP, i * chip->pages_per_sector);
- if (res != ERROR_OK) {
- LOG_ERROR("Can't %slock region containing page %d", set ? "" : "un", i);
- return res;
- }
- }
-
- return ERROR_OK;
- }
-
- static int sam4l_erase(struct flash_bank *bank, int first, int last)
- {
- int ret;
- struct sam4l_info *chip = (struct sam4l_info *)bank->driver_priv;
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
-
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (!chip->probed) {
- if (sam4l_probe(bank) != ERROR_OK)
- return ERROR_FLASH_BANK_NOT_PROBED;
- }
-
- /* Make sure the pages make sense. */
- if (first >= bank->num_sectors || last >= bank->num_sectors) {
- LOG_ERROR("Erase range %d - %d not valid (%d sectors total)", first, last,
- bank->num_sectors);
- return ERROR_FAIL;
- }
-
- /* Erase */
- if ((first == 0) && ((last + 1) == bank->num_sectors)) {
- LOG_DEBUG("Erasing the whole chip");
-
- ret = sam4l_flash_command(bank->target, SAM4L_FCMD_EA, -1);
- if (ret != ERROR_OK) {
- LOG_ERROR("Erase All failed");
- return ret;
- }
- } else {
- LOG_DEBUG("Erasing sectors %d through %d...\n", first, last);
-
- /* For each sector... */
- for (int i = first; i <= last; i++) {
- /* For each page in that sector... */
- for (int j = 0; j < chip->pages_per_sector; j++) {
- int pn = i * chip->pages_per_sector + j;
- bool is_erased = false;
-
- /* Issue the page erase */
- ret = sam4l_flash_command(bank->target, SAM4L_FCMD_EP, pn);
- if (ret != ERROR_OK) {
- LOG_ERROR("Erasing page %d failed", pn);
- return ret;
- }
-
- ret = sam4l_check_page_erased(bank, pn, &is_erased);
- if (ret != ERROR_OK)
- return ret;
-
- if (!is_erased) {
- LOG_DEBUG("Page %d was not erased.", pn);
- return ERROR_FAIL;
- }
- }
-
- /* This sector is definitely erased. */
- bank->sectors[i].is_erased = 1;
- }
- }
-
- return ERROR_OK;
- }
-
- /* Write an entire page from host buffer 'buf' to page-aligned 'address' in the
- * Flash. */
- static int sam4l_write_page(struct sam4l_info *chip, struct target *target,
- uint32_t address, const uint8_t *buf)
- {
- int res;
-
- LOG_DEBUG("sam4l_write_page address=%08" PRIx32, address);
-
- /* Clear the page buffer before we write to it */
- res = sam4l_flash_command(target, SAM4L_FCMD_CPB, -1);
- if (res != ERROR_OK) {
- LOG_ERROR("%s: can't clear page buffer", __func__);
- return res;
- }
-
- /* Write the modified page back to the target's page buffer */
- res = target_write_memory(target, address, 4, chip->page_size / 4, buf);
-
- if (res != ERROR_OK) {
- LOG_ERROR("%s: %d", __func__, __LINE__);
- return res;
- }
-
- /* Commit the page contents to Flash: erase the current page and then
- * write it out. */
- res = sam4l_flash_command(target, SAM4L_FCMD_EP, -1);
- if (res != ERROR_OK)
- return res;
- res = sam4l_flash_command(target, SAM4L_FCMD_WP, -1);
-
- return res;
- }
-
- /* Write partial contents into page-aligned 'address' on the Flash from host
- * buffer 'buf' by writing 'nb' of 'buf' at 'offset' into the Flash page. */
- static int sam4l_write_page_partial(struct sam4l_info *chip,
- struct flash_bank *bank, uint32_t address, const uint8_t *buf,
- uint32_t page_offset, uint32_t nb)
- {
- int res;
- uint8_t *pg = malloc(chip->page_size);
- if (!pg)
- return ERROR_FAIL;
-
- LOG_DEBUG("sam4l_write_page_partial address=%08" PRIx32 " nb=%08" PRIx32, address, nb);
-
- assert(page_offset + nb < chip->page_size);
- assert((address % chip->page_size) == 0);
-
- /* Retrieve the full page contents from Flash */
- res = target_read_memory(bank->target, address, 4,
- chip->page_size / 4, pg);
- if (res != ERROR_OK) {
- free(pg);
- return res;
- }
-
- /* Insert our partial page over the data from Flash */
- memcpy(pg + (page_offset % chip->page_size), buf, nb);
-
- /* Write the page back out */
- res = sam4l_write_page(chip, bank->target, address, pg);
- free(pg);
-
- return res;
- }
-
- static int sam4l_write(struct flash_bank *bank, const uint8_t *buffer,
- uint32_t offset, uint32_t count)
- {
- int res;
- uint32_t nb = 0;
- struct sam4l_info *chip = (struct sam4l_info *)bank->driver_priv;
-
- LOG_DEBUG("sam4l_write offset=%08" PRIx32 " count=%08" PRIx32, offset, count);
-
- if (bank->target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
-
- return ERROR_TARGET_NOT_HALTED;
- }
-
- if (!chip->probed) {
- if (sam4l_probe(bank) != ERROR_OK)
- return ERROR_FLASH_BANK_NOT_PROBED;
- }
-
- if (offset % chip->page_size) {
- /* We're starting at an unaligned offset so we'll write a partial page
- * comprising that offset and up to the end of that page. */
- nb = chip->page_size - (offset % chip->page_size);
- if (nb > count)
- nb = count;
- } else if (count < chip->page_size) {
- /* We're writing an aligned but partial page. */
- nb = count;
- }
-
- if (nb > 0) {
- res = sam4l_write_page_partial(chip, bank,
- (offset / chip->page_size) * chip->page_size + bank->base,
- buffer,
- offset % chip->page_size, nb);
- if (res != ERROR_OK)
- return res;
-
- /* We're done with the page contents */
- count -= nb;
- offset += nb;
- }
-
- /* There's at least one aligned page to write out. */
- if (count >= chip->page_size) {
- int np = count / chip->page_size + ((count % chip->page_size) ? 1 : 0);
-
- for (int i = 0; i < np; i++) {
- if (count >= chip->page_size) {
- res = sam4l_write_page(chip, bank->target,
- bank->base + offset,
- buffer + (i * chip->page_size));
- /* Advance one page */
- offset += chip->page_size;
- count -= chip->page_size;
- } else {
- res = sam4l_write_page_partial(chip, bank,
- bank->base + offset,
- buffer + (i * chip->page_size), 0, count);
- /* We're done after this. */
- offset += count;
- count = 0;
- }
-
- if (res != ERROR_OK)
- return res;
- }
- }
-
- return ERROR_OK;
- }
-
-
- COMMAND_HANDLER(sam4l_handle_reset_deassert)
- {
- struct target *target = get_current_target(CMD_CTX);
- struct armv7m_common *armv7m = target_to_armv7m(target);
- struct adiv5_dap *swjdp = armv7m->arm.dap;
- int retval = ERROR_OK;
- enum reset_types jtag_reset_config = jtag_get_reset_config();
-
- /* In case of sysresetreq, debug retains state set in cortex_m_assert_reset()
- * so we just release reset held by SMAP
- *
- * n_RESET (srst) clears the DP, so reenable debug and set vector catch here
- *
- * After vectreset SMAP release is not needed however makes no harm
- */
- if (target->reset_halt && (jtag_reset_config & RESET_HAS_SRST)) {
- retval = mem_ap_write_u32(swjdp, DCB_DHCSR, DBGKEY | C_HALT | C_DEBUGEN);
- if (retval == ERROR_OK)
- retval = mem_ap_write_atomic_u32(swjdp, DCB_DEMCR,
- TRCENA | VC_HARDERR | VC_BUSERR | VC_CORERESET);
- /* do not return on error here, releasing SMAP reset is more important */
- }
-
- int retval2 = mem_ap_write_atomic_u32(swjdp, SMAP_SCR, SMAP_SCR_HCR);
- if (retval2 != ERROR_OK)
- return retval2;
-
- return retval;
- }
-
- static const struct command_registration at91sam4l_exec_command_handlers[] = {
- {
- .name = "smap_reset_deassert",
- .handler = sam4l_handle_reset_deassert,
- .mode = COMMAND_EXEC,
- .help = "deasert internal reset held by SMAP"
- },
- COMMAND_REGISTRATION_DONE
- };
-
- static const struct command_registration at91sam4l_command_handlers[] = {
- {
- .name = "at91sam4l",
- .mode = COMMAND_ANY,
- .help = "at91sam4l flash command group",
- .usage = "",
- .chain = at91sam4l_exec_command_handlers,
- },
- COMMAND_REGISTRATION_DONE
- };
-
- struct flash_driver at91sam4l_flash = {
- .name = "at91sam4l",
- .commands = at91sam4l_command_handlers,
- .flash_bank_command = sam4l_flash_bank_command,
- .erase = sam4l_erase,
- .protect = sam4l_protect,
- .write = sam4l_write,
- .read = default_flash_read,
- .probe = sam4l_probe,
- .auto_probe = sam4l_probe,
- .erase_check = default_flash_blank_check,
- .protect_check = sam4l_protect_check,
- };
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