mini51: support for Nuvoton NuMicro Mini51 series flash memory
Adds a flash driver for Nuvoton MINI51, MINI52 and MINI54 microcontrollers. At the moment, it only supports the erase and write operations. These microcontrollers have a 4 / 8 / 16 KB APROM for application code and a 2 KB LDROM for bootloaders. When the MCU has booted off the APROM, the LDROM isn't mapped in memory but can be programmed, and the other way around. This means that the ARM core is typically rebooted for programming. After a successful write or erase operation, it is rebooted again, using the initial boot source. This driver only supports programming the APROM. This driver is a pure JTAG implementation, it doesn't use any SRAM. I've tested it on a MINI54ZAN microcontroller using an ST-LINK/V2. With the microcontroller running at the default clock frequency of 22.1184 MHz, speed seems to be around 1.1 KB/s. Change-Id: I180889c55af9fb5614cd99a953b755baba14288a Signed-off-by: Cosmin Gorgovan <cosmin@linux-geek.org> Reviewed-on: http://openocd.zylin.com/1546 Tested-by: jenkins Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Cosmin Gorgovan
Spencer Oliver
parent
1c41362aea
commit
e475896eb1
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@ -38,7 +38,8 @@ NOR_DRIVERS = \
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virtual.c \
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virtual.c \
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fm3.c \
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fm3.c \
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dsp5680xx_flash.c \
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dsp5680xx_flash.c \
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kinetis.c
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kinetis.c \
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mini51.c
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noinst_HEADERS = \
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noinst_HEADERS = \
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core.h \
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core.h \
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@ -51,6 +51,7 @@ extern struct flash_driver fm3_flash;
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extern struct flash_driver kinetis_flash;
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extern struct flash_driver kinetis_flash;
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extern struct flash_driver efm32_flash;
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extern struct flash_driver efm32_flash;
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extern struct flash_driver mdr_flash;
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extern struct flash_driver mdr_flash;
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extern struct flash_driver mini51_flash;
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/**
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/**
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* The list of built-in flash drivers.
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* The list of built-in flash drivers.
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@ -86,6 +87,7 @@ static struct flash_driver *flash_drivers[] = {
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&kinetis_flash,
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&kinetis_flash,
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&efm32_flash,
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&efm32_flash,
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&mdr_flash,
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&mdr_flash,
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&mini51_flash,
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NULL,
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NULL,
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};
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};
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@ -0,0 +1,463 @@
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/***************************************************************************
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* Copyright (C) 2013 Cosmin Gorgovan *
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* cosmin [at] linux-geek [dot] org *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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/*
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Flash driver for the Nuvoton NuMicro Mini51 series microcontrollers
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Part |APROM Size |Part ID (at 0x5000_0000)
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----------------------------------------------
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MINI51LAN 4 KB 0x00205100
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MINI51ZAN 4 KB 0x00205103
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MINI51TAN 4 KB 0x00205104
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MINI52LAN 8 KB 0x00205200
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MINI52ZAN 8 KB 0x00205203
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MINI52TAN 8 KB 0x00205204
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MINI54LAN 16 KB 0x00205400
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MINI54ZAN 16 KB 0x00205403
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MINI54TAN 16 KB 0x00205404
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Datasheet & TRM
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---------------
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The ISP flash programming procedure is described on pages 130 and 131 of the (not very verbose) TRM.
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http://www.keil.com/dd/docs/datashts/nuvoton/mini51/da00-mini51_52_54c1.pdf
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This driver
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-----------
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* Only erase and write operations have been implemented;
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* Both operations only support the APROM, not the LDROM;
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* The TRM suggests that after the boot source has been selected, a software reset should be performed by
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setting bit SWRST in ISPCON. However, this doesn't seem to have any effect on the MCU I'm using. At the
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moment, the ARM core is reset using the IPRSTC1 register, which seems to do the trick.
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Flash access limitations
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------------------------
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APROM can only be modified when the MCU has booted off the LDROM. For write and erase operations, the
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microcontroller will probably need to be rebooted. Pseudocode:
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* If operation is write or erase, check bit BS (1) in ISPCON (0x5000_C000);
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* If BS is 0 (APROM):
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* unlock protected registers by writing 0x59, 0x16, 0x88 to RegLockAddr(0x5000_0100);
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* set BS to 1 (LDROM);
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* reboot by setting bit CPU_RST(1) in IPRSTC1 (0x50000008);
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* poll CPU_RST until it is reset (not sure it's necessary);
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* <Perform flash operation>
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* reboot from APROM using the same procedure but writing 0 to BS
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For implementing the read operation, please note that the APROM isn't memory mapped when booted from LDROM.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "imp.h"
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#define PART_ID_REG 0x50000000
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#define IPRSTC1 0x50000008
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#define REGLOCKADDR 0x50000100
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#define ISPCON 0x5000C000
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#define ISPADR 0x5000C004
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#define ISPDAT 0x5000C008
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#define ISPCMD 0x5000C00C
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#define ISPTRG 0x5000C010
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#define PART_ID_MAIN_MASK 0xFFFFFFF8
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#define IPRSTC_CPU_RST 0x02
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#define ISPCON_BS_LDROM 0x02
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#define ISPCON_ISPEN 0x01
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#define ISPCON_SWRST 0x80
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#define ISPCON_ISPFF 0x40
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#define ISPCMD_PROGRAM 0x21
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#define ISPCMD_ERASE 0x22
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#define ISPTRG_ISPGO 0x01
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#define MINI51 0x00205100
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#define MINI52 0x00205200
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#define MINI54 0x00205400
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#define MINI51_APROM_BASE 0x00000000
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#define KB 1024
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#define PAGE_SIZE 512
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#define TIMEOUT 1000
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struct mini51_flash_bank {
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bool probed;
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};
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enum mini51_boot_source {
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APROM = 0,
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LDROM = 1
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};
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/* Private methods */
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static int mini51_unlock_reg(struct flash_bank *bank)
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{
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int status;
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struct target *target = bank->target;
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status = target_write_u32(target, REGLOCKADDR, 0x59);
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if (status != ERROR_OK)
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return status;
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status = target_write_u32(target, REGLOCKADDR, 0x16);
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if (status != ERROR_OK)
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return status;
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status = target_write_u32(target, REGLOCKADDR, 0x88);
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if (status != ERROR_OK)
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return status;
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return ERROR_OK;
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}
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static int mini51_reboot_with_source(struct flash_bank *bank,
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enum mini51_boot_source new_source,
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enum mini51_boot_source *prev_source)
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{
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uint32_t ispcon;
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uint32_t isprtc1;
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bool reboot = false;
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int status;
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int timeout = TIMEOUT;
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/* Read current boot source */
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struct target *target = bank->target;
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status = target_read_u32(target, ISPCON, &ispcon);
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if (status != ERROR_OK)
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return status;
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*prev_source = (ispcon >> 1) & 1;
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if ((new_source == APROM) && (*prev_source != APROM)) {
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ispcon &= ~ISPCON_BS_LDROM;
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reboot = true;
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} else if ((new_source == LDROM) && (*prev_source != LDROM)) {
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ispcon |= ISPCON_BS_LDROM;
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reboot = true;
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}
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if (reboot) {
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mini51_unlock_reg(bank);
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status = target_write_u32(target, ISPCON, ispcon);
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if (status != ERROR_OK)
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return status;
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status = target_write_u32(target, IPRSTC1, IPRSTC_CPU_RST);
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if (status != ERROR_OK)
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return status;
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do {
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target_read_u32(target, IPRSTC1, &isprtc1);
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timeout--;
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} while ((isprtc1 & IPRSTC_CPU_RST) && timeout > 0);
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if (timeout == 0) {
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LOG_WARNING("Mini51 flash driver: timeout attempting to reboot\n");
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return ERROR_FLASH_OPERATION_FAILED;
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}
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}
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return ERROR_OK;
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}
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static int mini51_get_part_id(struct flash_bank *bank, uint32_t *part_id)
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{
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return target_read_u32(bank->target, PART_ID_REG, part_id);
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}
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static int mini51_get_flash_size(struct flash_bank *bank, uint32_t *flash_size)
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{
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uint32_t part_id;
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int status;
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status = mini51_get_part_id(bank, &part_id);
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if (status != ERROR_OK)
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return status;
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switch (part_id & PART_ID_MAIN_MASK) {
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case MINI51:
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*flash_size = 4 * KB;
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break;
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case MINI52:
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*flash_size = 8 * KB;
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break;
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case MINI54:
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*flash_size = 16 * KB;
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break;
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default:
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*flash_size = 0;
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break;
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}
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return ERROR_OK;
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}
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/* Public (API) methods */
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FLASH_BANK_COMMAND_HANDLER(mini51_flash_bank_command)
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{
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struct mini51_flash_bank *mini51_info;
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mini51_info = malloc(sizeof(struct mini51_flash_bank));
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mini51_info->probed = false;
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bank->driver_priv = mini51_info;
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return ERROR_OK;
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}
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static int mini51_protect_check(struct flash_bank *bank)
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{
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LOG_WARNING("Mini51 flash driver: protect_check not implemented yet\n");
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return ERROR_FLASH_OPERATION_FAILED;
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}
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static int mini51_erase(struct flash_bank *bank, int first, int last)
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{
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int status;
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int timeout;
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uint32_t ispcon;
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uint32_t isptrg;
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enum mini51_boot_source new_source;
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enum mini51_boot_source prev_source;
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struct target *target = bank->target;
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if (target->state != TARGET_HALTED) {
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LOG_ERROR("Target not halted");
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return ERROR_TARGET_NOT_HALTED;
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}
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/* TODO: add support for erasing the LDROM */
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new_source = LDROM;
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status = mini51_reboot_with_source(bank, new_source, &prev_source);
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if (status != ERROR_OK)
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return status;
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/* Enable ISP */
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status = target_read_u32(target, ISPCON, &ispcon);
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if (status != ERROR_OK)
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return status;
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ispcon |= ISPCON_ISPEN;
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status = target_write_u32(target, ISPCON, ispcon);
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for (int page_start = first; page_start <= last; page_start++) {
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/* Set up erase command */
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status = target_write_u32(target, ISPADR, page_start*PAGE_SIZE);
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if (status != ERROR_OK)
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return status;
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status = target_write_u32(target, ISPCMD, ISPCMD_ERASE);
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if (status != ERROR_OK)
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return status;
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/* Erase the selected page */
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status = target_write_u32(target, ISPTRG, ISPTRG_ISPGO);
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if (status != ERROR_OK)
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return status;
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/* Wait for for command to finish executing */
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timeout = TIMEOUT;
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do {
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target_read_u32(target, ISPTRG, &isptrg);
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timeout--;
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} while ((isptrg & ISPTRG_ISPGO) && (timeout > 0));
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if (timeout == 0) {
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LOG_WARNING("Mini51 flash driver: Timeout erasing flash\n");
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return ERROR_FLASH_OPERATION_FAILED;
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}
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/* Check for errors */
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status = target_read_u32(target, ISPCON, &ispcon);
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if (status != ERROR_OK)
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return status;
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if (ispcon & ISPCON_ISPFF) {
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LOG_WARNING("Mini51 flash driver: Erase operation failed\n");
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return ERROR_FLASH_OPERATION_FAILED;
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}
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}
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/* Reboot from previous source */
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if (prev_source != new_source) {
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status = mini51_reboot_with_source(bank, prev_source, &new_source);
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if (status != ERROR_OK)
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return status;
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}
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return ERROR_OK;
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}
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static int mini51_protect(struct flash_bank *bank, int set, int first, int last)
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{
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LOG_WARNING("Mini51 flash driver: protect operation not implemented yet\n");
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return ERROR_FLASH_OPERATION_FAILED;
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}
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static int mini51_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
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{
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int status;
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int timeout;
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uint32_t ispcon;
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uint32_t isptrg;
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uint32_t ispdat;
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enum mini51_boot_source new_source;
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enum mini51_boot_source prev_source;
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struct target *target = bank->target;
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if (target->state != TARGET_HALTED) {
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LOG_ERROR("Target not halted");
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return ERROR_TARGET_NOT_HALTED;
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}
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if ((offset & 0x3) || (count & 0x3)) {
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LOG_WARNING("Mini51 flash driver: unaligned access not supported\n");
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return ERROR_FLASH_OPERATION_FAILED;
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}
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/* TODO: add support for writing to LDROM */
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new_source = LDROM;
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status = mini51_reboot_with_source(bank, new_source, &prev_source);
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if (status != ERROR_OK)
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return status;
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/* Enable ISP */
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||||||
|
status = target_read_u32(target, ISPCON, &ispcon);
|
||||||
|
if (status != ERROR_OK)
|
||||||
|
return status;
|
||||||
|
ispcon |= ISPCON_ISPEN;
|
||||||
|
status = target_write_u32(target, ISPCON, ispcon);
|
||||||
|
|
||||||
|
for (uint32_t i = offset; i < offset + count; i += 4) {
|
||||||
|
/* Set up program command */
|
||||||
|
status = target_write_u32(target, ISPADR, i);
|
||||||
|
if (status != ERROR_OK)
|
||||||
|
return status;
|
||||||
|
status = target_write_u32(target, ISPCMD, ISPCMD_PROGRAM);
|
||||||
|
if (status != ERROR_OK)
|
||||||
|
return status;
|
||||||
|
memcpy(&ispdat, buffer, sizeof(ispdat));
|
||||||
|
buffer += sizeof(ispdat);
|
||||||
|
status = target_write_u32(target, ISPDAT, ispdat);
|
||||||
|
if (status != ERROR_OK)
|
||||||
|
return status;
|
||||||
|
|
||||||
|
/* Write the selected word */
|
||||||
|
status = target_write_u32(target, ISPTRG, ISPTRG_ISPGO);
|
||||||
|
if (status != ERROR_OK)
|
||||||
|
return status;
|
||||||
|
|
||||||
|
/* Wait for for command to finish executing */
|
||||||
|
timeout = TIMEOUT;
|
||||||
|
do {
|
||||||
|
target_read_u32(target, ISPTRG, &isptrg);
|
||||||
|
timeout--;
|
||||||
|
} while ((isptrg & ISPTRG_ISPGO) && (timeout > 0));
|
||||||
|
if (timeout == 0) {
|
||||||
|
LOG_WARNING("Mini51 flash driver: Timeout programming flash\n");
|
||||||
|
return ERROR_FLASH_OPERATION_FAILED;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Check for errors */
|
||||||
|
status = target_read_u32(target, ISPCON, &ispcon);
|
||||||
|
if (status != ERROR_OK)
|
||||||
|
return status;
|
||||||
|
if (ispcon & ISPCON_ISPFF) {
|
||||||
|
LOG_WARNING("Mini51 flash driver: Programming operation failed\n");
|
||||||
|
return ERROR_FLASH_OPERATION_FAILED;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (prev_source != new_source) {
|
||||||
|
status = mini51_reboot_with_source(bank, prev_source, &new_source);
|
||||||
|
if (status != ERROR_OK)
|
||||||
|
return status;
|
||||||
|
}
|
||||||
|
|
||||||
|
return ERROR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
static int get_mini51_info(struct flash_bank *bank, char *buf, int buf_size)
|
||||||
|
{
|
||||||
|
snprintf(buf, buf_size, "Mini51 flash driver");
|
||||||
|
return ERROR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int mini51_probe(struct flash_bank *bank)
|
||||||
|
{
|
||||||
|
uint32_t flash_size;
|
||||||
|
int retval;
|
||||||
|
int num_pages;
|
||||||
|
uint32_t offset = 0;
|
||||||
|
|
||||||
|
retval = mini51_get_flash_size(bank, &flash_size);
|
||||||
|
if (retval != ERROR_OK || flash_size == 0) {
|
||||||
|
LOG_WARNING("Mini51 flash driver: Failed to detect a known part\n");
|
||||||
|
return ERROR_FLASH_OPERATION_FAILED;
|
||||||
|
}
|
||||||
|
|
||||||
|
num_pages = flash_size / PAGE_SIZE;
|
||||||
|
|
||||||
|
bank->base = MINI51_APROM_BASE;
|
||||||
|
bank->num_sectors = num_pages;
|
||||||
|
bank->sectors = malloc(sizeof(struct flash_sector) * num_pages);
|
||||||
|
bank->size = flash_size;
|
||||||
|
|
||||||
|
for (int i = 0; i < num_pages; i++) {
|
||||||
|
bank->sectors[i].offset = offset;
|
||||||
|
bank->sectors[i].size = PAGE_SIZE;
|
||||||
|
bank->sectors[i].is_erased = -1;
|
||||||
|
bank->sectors[i].is_protected = 0;
|
||||||
|
offset += PAGE_SIZE;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct mini51_flash_bank *mini51_info = bank->driver_priv;
|
||||||
|
mini51_info->probed = true;
|
||||||
|
|
||||||
|
return ERROR_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int mini51_auto_probe(struct flash_bank *bank)
|
||||||
|
{
|
||||||
|
struct mini51_flash_bank *mini51_info = bank->driver_priv;
|
||||||
|
if (mini51_info->probed)
|
||||||
|
return ERROR_OK;
|
||||||
|
return mini51_probe(bank);
|
||||||
|
}
|
||||||
|
|
||||||
|
struct flash_driver mini51_flash = {
|
||||||
|
.name = "mini51",
|
||||||
|
.flash_bank_command = mini51_flash_bank_command,
|
||||||
|
.erase = mini51_erase,
|
||||||
|
.protect = mini51_protect,
|
||||||
|
.write = mini51_write,
|
||||||
|
.read = default_flash_read,
|
||||||
|
.probe = mini51_probe,
|
||||||
|
.auto_probe = mini51_auto_probe,
|
||||||
|
.erase_check = default_flash_blank_check,
|
||||||
|
.protect_check = mini51_protect_check,
|
||||||
|
.info = get_mini51_info,
|
||||||
|
};
|
||||||
|
|
||||||
Loading…
Reference in New Issue