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-rw-r--r--recipes-bsp/at91bootstrap/at91bootstrap-3.5.3/at91bootstrap-3.5.3-mtcdt.patch433
1 files changed, 429 insertions, 4 deletions
diff --git a/recipes-bsp/at91bootstrap/at91bootstrap-3.5.3/at91bootstrap-3.5.3-mtcdt.patch b/recipes-bsp/at91bootstrap/at91bootstrap-3.5.3/at91bootstrap-3.5.3-mtcdt.patch
index 7361cc6..26de833 100644
--- a/recipes-bsp/at91bootstrap/at91bootstrap-3.5.3/at91bootstrap-3.5.3-mtcdt.patch
+++ b/recipes-bsp/at91bootstrap/at91bootstrap-3.5.3/at91bootstrap-3.5.3-mtcdt.patch
@@ -58,9 +58,51 @@ Index: git/board/at91sam9x5ek/at91sam9x5eknf_uboot_defconfig
+# CONFIG_DISABLE_WATCHDOG is not set
Index: git/board/at91sam9x5ek/at91sam9x5ek.c
===================================================================
---- git.orig/board/at91sam9x5ek/at91sam9x5ek.c 2015-01-13 13:31:45.162884794 -0600
-+++ git/board/at91sam9x5ek/at91sam9x5ek.c 2015-01-13 13:31:45.426881419 -0600
-@@ -312,10 +312,8 @@
+--- git.orig/board/at91sam9x5ek/at91sam9x5ek.c 2019-04-04 15:49:54.143358228 -0500
++++ git/board/at91sam9x5ek/at91sam9x5ek.c 2019-04-04 17:07:51.999219741 -0500
+@@ -53,6 +53,31 @@
+ extern void hw_init_hook(void);
+ #endif
+
++
++static void initialize_mt_gpio(void)
++{
++ /* Configure DBGU pins */
++ const struct pio_desc mt_gpio_pins[] = {
++ /* Misc. pins -- Pins PD15-PD18 belong to PERIPH
++ * B A20-A25 until bootstrap shuts them down.
++ * This code prevents these pins from being used
++ * during boot, since we do not
++ * need these pins to boot the system and we
++ * do not want resets to toggle needlessly.
++ */
++ {"GNSS-RESET",AT91C_PIN_PD(15), 1, PIO_PULLUP, PIO_OUTPUT},
++ {"SECURE-RESET",AT91C_PIN_PD(16), 1, PIO_PULLUP, PIO_OUTPUT},
++ {"MTQ-RESET",AT91C_PIN_PD(17), 1, PIO_PULLUP, PIO_OUTPUT},
++ {"USBHUB-RESET",AT91C_PIN_PD(18), 1, PIO_PULLUP, PIO_OUTPUT},
++ {"GNSS-INT",AT91C_PIN_PD(19), 1, PIO_PULLUP, PIO_OUTPUT},
++ {"WIFI-BT-LPMODE",AT91C_PIN_PD(20), 0, PIO_PULLUP, PIO_INPUT},
++ {(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
++ };
++
++ pio_configure(mt_gpio_pins);
++}
++
++
+ static void at91_dbgu_hw_init(void)
+ {
+ /* Configure DBGU pins */
+@@ -198,6 +223,9 @@
+ slowclk_enable_osc32();
+ #endif
+
++ /* Initialize MT GPIO */
++ initialize_mt_gpio();
++
+ /* Initialize dbgu */
+ initialize_dbgu();
+
+@@ -322,10 +350,8 @@
reg = readl(AT91C_BASE_CCFG + CCFG_EBICSA);
reg |= AT91C_EBI_CS3A_SM;
@@ -73,7 +115,7 @@ Index: git/board/at91sam9x5ek/at91sam9x5ek.c
reg &= ~AT91C_EBI_DRV;
writel(reg, AT91C_BASE_CCFG + CCFG_EBICSA);
-@@ -345,9 +343,7 @@
+@@ -355,9 +381,7 @@
AT91C_BASE_SMC + SMC_CTRL3);
/* Configure the PIO controller */
@@ -84,3 +126,386 @@ Index: git/board/at91sam9x5ek/at91sam9x5ek.c
pio_configure(nand_pins_hi);
writel((1 << AT91C_ID_PIOC_D), (PMC_PCER + AT91C_BASE_PMC));
+diff -aNru git.orig/board/at91sam9x5ek/at91sam9x5ek.c.orig git/board/at91sam9x5ek/at91sam9x5ek.c.orig
+--- git.orig/board/at91sam9x5ek/at91sam9x5ek.c.orig 1969-12-31 18:00:00.000000000 -0600
++++ git/board/at91sam9x5ek/at91sam9x5ek.c.orig 2019-04-04 17:06:31.091222136 -0500
+@@ -0,0 +1,379 @@
++/* ----------------------------------------------------------------------------
++ * ATMEL Microcontroller Software Support
++ * ----------------------------------------------------------------------------
++ * Copyright (c) 2008, Atmel Corporation
++
++ * All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions are met:
++ *
++ * - Redistributions of source code must retain the above copyright notice,
++ * this list of conditions and the disclaimer below.
++ *
++ * Atmel's name may not be used to endorse or promote products derived from
++ * this software without specific prior written permission.
++ *
++ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
++ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
++ * DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
++ */
++#include "common.h"
++#include "hardware.h"
++#include "arch/at91_ccfg.h"
++#include "arch/at91_rstc.h"
++#include "arch/at91_pmc.h"
++#include "arch/at91_smc.h"
++#include "arch/at91_pio.h"
++#include "arch/at91_ddrsdrc.h"
++#include "gpio.h"
++#include "pmc.h"
++#include "dbgu.h"
++#include "debug.h"
++#include "ddramc.h"
++#include "slowclk.h"
++#include "timer.h"
++#include "watchdog.h"
++#include "string.h"
++#include "at91sam9x5ek.h"
++
++#include "onewire_info.h"
++
++#define RTC_SCCR 0x1C
++#define RTC_IDR 0x24
++
++#ifdef CONFIG_USER_HW_INIT
++extern void hw_init_hook(void);
++#endif
++
++static void at91_dbgu_hw_init(void)
++{
++ /* Configure DBGU pins */
++ const struct pio_desc dbgu_pins[] = {
++ {"RXD", AT91C_PIN_PA(9), 0, PIO_DEFAULT, PIO_PERIPH_A},
++ {"TXD", AT91C_PIN_PA(10), 0, PIO_DEFAULT, PIO_PERIPH_A},
++ {(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
++ };
++
++ pio_configure(dbgu_pins);
++ writel((1 << AT91C_ID_PIOA_B), (PMC_PCER + AT91C_BASE_PMC));
++}
++
++static void initialize_dbgu(void)
++{
++ at91_dbgu_hw_init();
++ dbgu_init(BAUDRATE(MASTER_CLOCK, BAUD_RATE));
++}
++
++#ifdef CONFIG_DDR2
++/* Using the Micron MT47H64M16HR-3 */
++static void ddramc_reg_config(struct ddramc_register *ddramc_config)
++{
++ ddramc_config->mdr = (AT91C_DDRC2_DBW_16_BITS
++ | AT91C_DDRC2_MD_DDR2_SDRAM);
++
++ ddramc_config->cr = (AT91C_DDRC2_NC_DDR10_SDR9 /* 10 column bits(1K) */
++ | AT91C_DDRC2_NR_13 /* 13 row bits (8K) */
++ | AT91C_DDRC2_CAS_3 /* CAS Latency 3 */
++ | AT91C_DDRC2_NB_BANKS_8 /* 8 banks */
++ | AT91C_DDRC2_DLL_RESET_DISABLED /* DLL not reset */
++ | AT91C_DDRC2_DIC_DS /* Low DDR Drive Strength */
++ | AT91C_DDRC2_DECOD_INTERLEAVED);/* Interleaved decode*/
++
++ /*
++ * Make sure to uncomment the following line if the DDR controller
++ * shares the EBI with another memory controller (SMC, NAND,..).
++ * For instance, AT91C_DDRC2_EBISHARE shall be set if NAND flash
++ * data line 0 is positioned on EBI data line 0 (AT91C_EBI_NFD0_ON_D16 bit
++ * cleared in CCFG_EBICSA register).
++ *
++ * For Atmel AT91SAM9x5-EK revision B onwards, this AT91C_DDRC2_EBISHARE bit
++ * is cleared because the NAND flash data line 0 is positioned on EBI
++ * data line number 16 (AT91C_EBI_NFD0_ON_D16 bit set in CCFG_EBICSA
++ * register). Only the DDR controller function is thus used on lower
++ * EBI data lines.
++ */
++ //ddramc_config->cr |= AT91C_DDRC2_EBISHARE; /* DQM is shared with other controller */
++
++
++ /*
++ * The DDR2-SDRAM device requires a refresh every 15.625 us or 7.81 us.
++ * With a 133 MHz frequency, the refresh timer count register must to be
++ * set with (15.625 x 133 MHz) ~ 2084 i.e. 0x824
++ * or (7.81 x 133 MHz) ~ 1040 i.e. 0x410.
++ */
++ ddramc_config->rtr = 0x411; /* Refresh timer: 7.8125us */
++
++ /* One clock cycle @ 133 MHz = 7.5 ns */
++ ddramc_config->t0pr = (AT91C_DDRC2_TRAS_6 /* 6 * 7.5 = 45 ns */
++ | AT91C_DDRC2_TRCD_2 /* 2 * 7.5 = 22.5 ns */
++ | AT91C_DDRC2_TWR_2 /* 2 * 7.5 = 15 ns */
++ | AT91C_DDRC2_TRC_8 /* 8 * 7.5 = 75 ns */
++ | AT91C_DDRC2_TRP_2 /* 2 * 7.5 = 15 ns */
++ | AT91C_DDRC2_TRRD_2 /* 2 * 7.5 = 15 ns */
++ | AT91C_DDRC2_TWTR_2 /* 2 clock cycles min */
++ | AT91C_DDRC2_TMRD_2); /* 2 clock cycles */
++
++ ddramc_config->t1pr = (AT91C_DDRC2_TXP_2 /* 2 clock cycles */
++ | AT91C_DDRC2_TXSRD_200 /* 200 clock cycles */
++ | AT91C_DDRC2_TXSNR_19 /* 19 * 7.5 = 142.5 ns*/
++ | AT91C_DDRC2_TRFC_18); /* 18 * 7.5 = 135 ns */
++
++ ddramc_config->t2pr = (AT91C_DDRC2_TFAW_7 /* 7 * 7.5 = 52.5 ns */
++ | AT91C_DDRC2_TRTP_2 /* 2 clock cycles min */
++ | AT91C_DDRC2_TRPA_3 /* 3 * 7.5 = 22.5 ns */
++ | AT91C_DDRC2_TXARDS_7 /* 7 clock cycles */
++ | AT91C_DDRC2_TXARD_2); /* 2 clock cycles */
++}
++
++static void ddramc_init(void)
++{
++ unsigned long csa;
++ struct ddramc_register ddramc_reg;
++
++ ddramc_reg_config(&ddramc_reg);
++
++ /* ENABLE DDR2 clock */
++ writel(AT91C_PMC_DDR, AT91C_BASE_PMC + PMC_SCER);
++
++ /* Chip select 1 is for DDR2/SDRAM */
++ csa = readl(AT91C_BASE_CCFG + CCFG_EBICSA);
++ csa |= AT91C_EBI_CS1A_SDRAMC;
++ csa &= ~AT91C_EBI_DBPUC;
++ csa |= AT91C_EBI_DBPDC;
++ csa |= AT91C_EBI_DRV_HD;
++
++ writel(csa, AT91C_BASE_CCFG + CCFG_EBICSA);
++
++ /* DDRAM2 Controller initialize */
++ ddram_initialize(AT91C_BASE_DDRSDRC, AT91C_BASE_CS1, &ddramc_reg);
++}
++#endif /* #ifdef CONFIG_DDR2 */
++
++static void one_wire_hw_init(void)
++{
++ const struct pio_desc wire_pio[] = {
++ {"1-Wire", AT91C_PIN_PB(18), 1, PIO_DEFAULT, PIO_OUTPUT},
++ {(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
++ };
++
++ writel((1 << AT91C_ID_PIOA_B), (PMC_PCER + AT91C_BASE_PMC));
++ pio_configure(wire_pio);
++}
++
++#ifdef CONFIG_HW_INIT
++void hw_init(void)
++{
++ /* Disable watchdog */
++ at91_disable_wdt();
++
++ /* At this stage the main oscillator is
++ *supposed to be enabled PCK = MCK = MOSC
++ */
++ writel(0x00, AT91C_BASE_PMC + PMC_PLLICPR);
++
++ /* Configure PLLA = MOSC * (PLL_MULA + 1) / PLL_DIVA */
++ pmc_cfg_plla(PLLA_SETTINGS, PLL_LOCK_TIMEOUT);
++
++ /* PCK = PLLA/2 = 3 * MCK */
++ pmc_cfg_mck(BOARD_PRESCALER_MAIN_CLOCK, PLL_LOCK_TIMEOUT);
++
++ /* Switch MCK on PLLA output */
++ pmc_cfg_mck(BOARD_PRESCALER_PLLA, PLL_LOCK_TIMEOUT);
++
++ /*Enable External Reset */
++ writel(AT91C_RSTC_KEY_UNLOCK | AT91C_RSTC_URSTEN, AT91C_BASE_RSTC + RSTC_RMR);
++
++ /* Init timer */
++ timer_init();
++
++#ifdef CONFIG_SCLK
++ slowclk_enable_osc32();
++#endif
++
++ /* Initialize dbgu */
++ initialize_dbgu();
++
++#ifdef CONFIG_DDR2
++ /* Initialize DDRAM Controller */
++ ddramc_init();
++#endif
++ /* one wire pin init */
++ one_wire_hw_init();
++
++#ifdef CONFIG_USER_HW_INIT
++ hw_init_hook();
++#endif
++
++ /* disable all RTC interrupts and clear status register.
++ * Prevents possible Linux lockup due to unexpected RTC interrupt
++ */
++ writel(0xFF, RTC_IDR + AT91C_BASE_RTC);
++ writel(0xFF, RTC_SCCR + AT91C_BASE_RTC);
++}
++#endif /* #ifdef CONFIG_HW_INIT */
++
++#ifdef CONFIG_DATAFLASH
++void at91_spi0_hw_init(void)
++{
++ /* Configure PINs for SPI0 */
++ const struct pio_desc spi0_pins[] = {
++ {"MISO", AT91C_PIN_PA(11), 0, PIO_DEFAULT, PIO_PERIPH_A},
++ {"MOSI", AT91C_PIN_PA(12), 0, PIO_DEFAULT, PIO_PERIPH_A},
++ {"SPCK", AT91C_PIN_PA(13), 0, PIO_DEFAULT, PIO_PERIPH_A},
++ {"NPCS", CONFIG_SYS_SPI_PCS, 1, PIO_DEFAULT, PIO_OUTPUT},
++ {(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
++ };
++
++ writel((1 << AT91C_ID_PIOA_B), (PMC_PCER + AT91C_BASE_PMC));
++ pio_configure(spi0_pins);
++
++ writel((1 << AT91C_ID_SPI0), (PMC_PCER + AT91C_BASE_PMC));
++}
++#endif /* #ifdef CONFIG_DATAFLASH */
++
++#ifdef CONFIG_SDCARD
++static void sdcard_set_of_name_board(char *of_name)
++{
++ unsigned int cpu_board_id = get_cm_sn();
++ unsigned int disp_board_id = get_dm_sn();
++
++ if (cpu_board_id == BOARD_ID_SAM9G15_CM)
++ strcpy(of_name, "at91sam9g15ek");
++ else if (cpu_board_id == BOARD_ID_SAM9G25_CM)
++ strcpy(of_name, "at91sam9g25ek");
++ else if (cpu_board_id == BOARD_ID_SAM9G35_CM)
++ strcpy(of_name, "at91sam9g35ek");
++ else if (cpu_board_id == BOARD_ID_SAM9X25_CM)
++ strcpy(of_name, "at91sam9x25ek");
++ else if (cpu_board_id == BOARD_ID_SAM9X35_CM)
++ strcpy(of_name, "at91sam9x35ek");
++ else
++ dbg_log(1, "WARNING: Not correct CPU board ID\n\r");
++
++ if (disp_board_id == BOARD_ID_PDA_DM)
++ strcat(of_name, "_pda");
++
++ strcat(of_name, ".dtb");
++}
++
++void at91_mci0_hw_init(void)
++{
++ const struct pio_desc mci_pins[] = {
++ {"MCCK", AT91C_PIN_PA(17), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"MCCDA", AT91C_PIN_PA(16), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"MCDA0", AT91C_PIN_PA(15), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"MCDA1", AT91C_PIN_PA(18), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"MCDA2", AT91C_PIN_PA(19), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"MCDA3", AT91C_PIN_PA(20), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
++ };
++
++ /* Configure the PIO controller */
++ writel((1 << AT91C_ID_PIOA_B), (PMC_PCER + AT91C_BASE_PMC));
++ pio_configure(mci_pins);
++
++ /* Enable the clock */
++ writel((1 << AT91C_ID_HSMCI0), (PMC_PCER + AT91C_BASE_PMC));
++
++ /* Set of name function pointer */
++ sdcard_set_of_name = &sdcard_set_of_name_board;
++}
++#endif /* #ifdef CONFIG_SDCARD */
++
++#ifdef CONFIG_NANDFLASH
++void nandflash_hw_init(void)
++{
++ unsigned int reg;
++
++ /* Configure Nand PINs */
++ const struct pio_desc nand_pins_hi[] = {
++ {"NANDOE", CONFIG_SYS_NAND_OE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDWE", CONFIG_SYS_NAND_WE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDALE", CONFIG_SYS_NAND_ALE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDCLE", CONFIG_SYS_NAND_CLE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDCS", CONFIG_SYS_NAND_ENABLE_PIN, 1, PIO_PULLUP, PIO_OUTPUT},
++ {"D0", AT91C_PIN_PD(6), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"D1", AT91C_PIN_PD(7), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"D2", AT91C_PIN_PD(8), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"D3", AT91C_PIN_PD(9), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"D4", AT91C_PIN_PD(10), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"D5", AT91C_PIN_PD(11), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"D6", AT91C_PIN_PD(12), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"D7", AT91C_PIN_PD(13), 0, PIO_PULLUP, PIO_PERIPH_A},
++ {(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
++ };
++
++ const struct pio_desc nand_pins_lo[] = {
++ {"NANDOE", CONFIG_SYS_NAND_OE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDWE", CONFIG_SYS_NAND_WE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDALE", CONFIG_SYS_NAND_ALE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDCLE", CONFIG_SYS_NAND_CLE_PIN, 0, PIO_PULLUP, PIO_PERIPH_A},
++ {"NANDCS", CONFIG_SYS_NAND_ENABLE_PIN, 1, PIO_PULLUP, PIO_OUTPUT},
++ {(char *)0, 0, 0, PIO_DEFAULT, PIO_PERIPH_A},
++ };
++
++ reg = readl(AT91C_BASE_CCFG + CCFG_EBICSA);
++ reg |= AT91C_EBI_CS3A_SM;
++ if (get_cm_rev() == 'A')
++ reg &= ~AT91C_EBI_NFD0_ON_D16;
++ else
++ reg |= (AT91C_EBI_DDR_MP_EN | AT91C_EBI_NFD0_ON_D16);
++
++ reg &= ~AT91C_EBI_DRV;
++ writel(reg, AT91C_BASE_CCFG + CCFG_EBICSA);
++
++ /* Configure SMC CS3 */
++ writel((AT91C_SMC_NWESETUP_(1)
++ | AT91C_SMC_NCS_WRSETUP_(0)
++ | AT91C_SMC_NRDSETUP_(2)
++ | AT91C_SMC_NCS_RDSETUP_(0)),
++ AT91C_BASE_SMC + SMC_SETUP3);
++
++ writel((AT91C_SMC_NWEPULSE_(3)
++ | AT91C_SMC_NCS_WRPULSE_(5)
++ | AT91C_SMC_NRDPULSE_(4)
++ | AT91C_SMC_NCS_RDPULSE_(6)),
++ AT91C_BASE_SMC + SMC_PULSE3);
++
++ writel((AT91C_SMC_NWECYCLE_(5)
++ | AT91C_SMC_NRDCYCLE_(7)),
++ AT91C_BASE_SMC + SMC_CYCLE3);
++
++ writel((AT91C_SMC_READMODE
++ | AT91C_SMC_WRITEMODE
++ | AT91C_SMC_NWAITM_NWAIT_DISABLE
++ | AT91C_SMC_DBW_WIDTH_BITS_8
++ | AT91_SMC_TDF_(1)),
++ AT91C_BASE_SMC + SMC_CTRL3);
++
++ /* Configure the PIO controller */
++ if (get_cm_rev() == 'A')
++ pio_configure(nand_pins_lo);
++ else
++ pio_configure(nand_pins_hi);
++
++ writel((1 << AT91C_ID_PIOC_D), (PMC_PCER + AT91C_BASE_PMC));
++}
++
++void nandflash_config_buswidth(unsigned char busw)
++{
++ unsigned long csa;
++
++ csa = readl(AT91C_BASE_SMC + SMC_CTRL3);
++
++ if (busw == 0)
++ csa |= AT91C_SMC_DBW_WIDTH_BITS_8;
++ else
++ csa |= AT91C_SMC_DBW_WIDTH_BITS_16;
++
++ writel(csa, AT91C_BASE_SMC + SMC_CTRL3);
++}
++#endif /* #ifdef CONFIG_NANDFLASH */