[U-Boot] [PATCH v5] at91: add support for CDU9G25 board

Andreas Bießmann andreas.devel at googlemail.com
Fri Sep 13 16:10:42 CEST 2013


Dear Jiri Prchal,

On 09/13/2013 03:00 PM, Jiri Prchal wrote:
> This patch adds support for our companies board CDU9G25 with Atmel AT91SAM9G25, 128MB DDR2, 256MB NAND.
> 
> Signed-off-by: Jiri Prchal <jiri.prchal at aksignal.cz>
> ---
> v.2
> Fixed static IP and MAC addr cofiguration by random MAC and DHCP.
> Added entry to MAINTAINERS.
> Fixed line lenght, trailing spaces and other cosmetics.
> v.3
> Removed static eth_gadget addresses.
> MAC address set from serial number of F-RAM.
> v.4
> Changed debug to printf if used random MAC addr, print that addr.
> Keep MAC addr set in enviroment.
> v.5
> Changes to Bo Shen comments.
> 
> Signed-off-by: Jiri Prchal <jiri.prchal at aksignal.cz>
> ---
>  arch/arm/include/asm/mach-types.h |    1 +
>  board/AKsignal/cdu9g25/Makefile   |   34 ++++++
>  board/AKsignal/cdu9g25/cdu9g25.c  |  202 +++++++++++++++++++++++++++++++++++
>  boards.cfg                        |    1 +
>  include/configs/cdu9g25.h         |  210 +++++++++++++++++++++++++++++++++++++
>  5 files changed, 448 insertions(+)
>  create mode 100644 board/AKsignal/cdu9g25/Makefile
>  create mode 100644 board/AKsignal/cdu9g25/cdu9g25.c
>  create mode 100644 include/configs/cdu9g25.h
> 
> diff --git a/arch/arm/include/asm/mach-types.h b/arch/arm/include/asm/mach-types.h
> index 440b041..9b274ba 100644
> --- a/arch/arm/include/asm/mach-types.h
> +++ b/arch/arm/include/asm/mach-types.h
> @@ -986,6 +986,7 @@ extern unsigned int __machine_arch_type;
>  #define MACH_TYPE_VIT_IBOX             3371
>  #define MACH_TYPE_DM6441_ESP           3372
>  #define MACH_TYPE_AT91SAM9X5EK         3373
> +#define MACH_TYPE_CDU9G25              3373

NAK, please obtain a mach type:
http://www.arm.linux.org.uk/developer/machines/?action=new

>  #define MACH_TYPE_LIBRA                3374
>  #define MACH_TYPE_EASYCRRH             3375
>  #define MACH_TYPE_TRIPEL               3376
> diff --git a/board/AKsignal/cdu9g25/Makefile b/board/AKsignal/cdu9g25/Makefile
> new file mode 100644
> index 0000000..b644a83
> --- /dev/null
> +++ b/board/AKsignal/cdu9g25/Makefile
> @@ -0,0 +1,34 @@
> +#
> +# U-boot - Makefile
> +#
> +# (C) Copyright 2013
> +# Jiri Prchal <jiri.prchal at aksignal.cz>
> +# AK signal <www.aksignal.cz>
> +#
> +# (C) Copyright 2000-2006
> +# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
> +#
> +# SPDX-License-Identifier:	GPL-2.0+
> +#
> +
> +include $(TOPDIR)/config.mk
> +
> +LIB	= $(obj)lib$(BOARD).o
> +
> +COBJS-y	+= cdu9g25.o
> +
> +SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
> +OBJS	:= $(addprefix $(obj),$(COBJS-y))
> +SOBJS	:= $(addprefix $(obj),$(SOBJS))
> +
> +$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
> +	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
> +
> +#########################################################################
> +
> +# defines $(obj).depend target
> +include $(SRCTREE)/rules.mk
> +
> +sinclude $(obj).depend
> +
> +#########################################################################
> diff --git a/board/AKsignal/cdu9g25/cdu9g25.c b/board/AKsignal/cdu9g25/cdu9g25.c
> new file mode 100644
> index 0000000..7321a02
> --- /dev/null
> +++ b/board/AKsignal/cdu9g25/cdu9g25.c
> @@ -0,0 +1,202 @@
> +/*
> + * (C) Copyright 2013
> + * Jiri Prchal <jiri.prchal at aksignal.cz>
> + * AK signal <www.aksignal.cz>
> + *
> + * SPDX-License-Identifier:	GPL-2.0+
> + */
> +
> +#include <common.h>
> +#include <malloc.h>
> +#include <asm/io.h>
> +#include <asm/arch/at91sam9x5_matrix.h>
> +#include <asm/arch/at91sam9_smc.h>
> +#include <asm/arch/at91_common.h>
> +#include <asm/arch/at91_pmc.h>
> +#include <asm/arch/at91_rstc.h>
> +#include <asm/arch/at91_spi.h>
> +#include <asm/arch/gpio.h>
> +#include <asm/arch/clk.h>
> +#include <atmel_hlcdc.h>
> +#include <atmel_mci.h>
> +#include <spi.h>
> +#include <net.h>
> +#include <netdev.h>
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +static void cdu9g25_nand_hw_init(void)
> +{
> +	struct at91_smc *smc = (struct at91_smc *)ATMEL_BASE_SMC;
> +	struct at91_matrix *matrix = (struct at91_matrix *)ATMEL_BASE_MATRIX;
> +	struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
> +	unsigned long csa;
> +
> +	/* Enable CS3 */
> +	csa = readl(&matrix->ebicsa);
> +	csa |= AT91_MATRIX_EBI_CS3A_SMC_SMARTMEDIA;
> +	writel(csa, &matrix->ebicsa);
> +
> +	/* Configure SMC CS3 for NAND/SmartMedia */
> +	writel(AT91_SMC_SETUP_NWE(1) | AT91_SMC_SETUP_NCS_WR(0) |
> +		AT91_SMC_SETUP_NRD(1) | AT91_SMC_SETUP_NCS_RD(0),
> +		&smc->cs[3].setup);
> +	writel(AT91_SMC_PULSE_NWE(3) | AT91_SMC_PULSE_NCS_WR(5) |
> +	       AT91_SMC_PULSE_NRD(4) | AT91_SMC_PULSE_NCS_RD(6),
> +	       &smc->cs[3].pulse);
> +	writel(AT91_SMC_CYCLE_NWE(5) | AT91_SMC_CYCLE_NRD(6),
> +	       &smc->cs[3].cycle);
> +	writel(AT91_SMC_MODE_RM_NRD | AT91_SMC_MODE_WM_NWE |
> +		AT91_SMC_MODE_EXNW_DISABLE |
> +		AT91_SMC_MODE_DBW_8 |
> +		AT91_SMC_MODE_TDF_CYCLE(1),
> +		&smc->cs[3].mode);
> +
> +	writel(1 << ATMEL_ID_PIOCD, &pmc->pcer);
> +
> +	/* Configure RDY/BSY */
> +	at91_set_gpio_input(CONFIG_SYS_NAND_READY_PIN, 1);
> +
> +	/* Enable NandFlash */
> +	at91_set_gpio_output(CONFIG_SYS_NAND_ENABLE_PIN, 1);
> +
> +	at91_set_a_periph(AT91_PIO_PORTD, 0, 1);	/* NAND OE */
> +	at91_set_a_periph(AT91_PIO_PORTD, 1, 1);	/* NAND WE */
> +	at91_set_a_periph(AT91_PIO_PORTD, 2, 1);	/* NAND ALE */
> +	at91_set_a_periph(AT91_PIO_PORTD, 3, 1);	/* NAND CLE */
> +}
> +
> +int spi_cs_is_valid(unsigned int bus, unsigned int cs)
> +{
> +	debug("spi_cs_is_valid: bus=%u cs=%u\n", bus, cs);
> +	if (bus < 2 && cs < 4)
> +		return 1;
> +
> +	return 0;
> +}
> +
> +void spi_cs_activate(struct spi_slave *slave)
> +{
> +	debug("spi_cs_activate: bus=%u cs=%u\n", slave->bus, slave->cs);
> +	at91_set_pio_output(AT91_PIO_PORTA, 23, 0);
> +}
> +
> +void spi_cs_deactivate(struct spi_slave *slave)
> +{
> +	debug("spi_cs_deactivate: bus=%u cs=%u\n", slave->bus, slave->cs);
> +	at91_set_pio_output(AT91_PIO_PORTA, 23, 1);
> +}
> +
> +void cdu9g25_spi0_hw_init(void)
> +{
> +	at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
> +
> +	at91_set_a_periph(AT91_PIO_PORTA, 11, 0);	/* SPI0_MISO */
> +	at91_set_a_periph(AT91_PIO_PORTA, 12, 0);	/* SPI0_MOSI */
> +	at91_set_a_periph(AT91_PIO_PORTA, 13, 0);	/* SPI0_SPCK */
> +
> +	/* Enable clock */
> +	writel(1 << ATMEL_ID_SPI0, &pmc->pcer);
> +
> +	at91_set_pio_output(AT91_PIO_PORTA, 23, 1);
> +}
> +
> +void cdu9g25_init_enetaddr(void)
> +{
> +	struct spi_slave *slave;
> +	uchar sernum[9];
> +	int ret;
> +
> +	if (eth_getenv_enetaddr("ethaddr", sernum))
> +		return;
> +
> +	slave = spi_setup_slave(0, 3, 1000000, SPI_MODE_0);
> +	if (!slave) {
> +		debug("Failed to set up FRAM slave\n");
> +		goto err_spi_setup_slave;
> +	}
> +
> +	ret = spi_claim_bus(slave);
> +	if (ret) {
> +		debug("Failed to claim SPI bus: %d\n", ret);
> +		goto err_spi_claim_bus;
> +	}
> +
> +	*sernum = 0xc3; /* opcode to read serial number */
> +	ret = spi_xfer(slave, sizeof(sernum) * 8, sernum, sernum,
> +		       SPI_XFER_BEGIN | SPI_XFER_END);
> +	if (ret) {
> +		debug("Failed to read serial#: %d\n", ret);
> +		goto err_spi_xfer;
> +	}
> +
> +	memmove(sernum + 1, sernum + 3, 6);
> +	*sernum = 0x02;
> +
> +err_spi_xfer:
> +	spi_release_bus(slave);
> +err_spi_claim_bus:
> +	spi_free_slave(slave);
> +err_spi_setup_slave:
> +	if (!is_valid_ether_addr(sernum)) {
> +		eth_random_enetaddr(sernum);
> +		printf("Using random MAC address %pM\n", sernum);

is that %p formating intended? Shouldn't you print the ethaddr here in
hex rather than the pointer to the memory location?

> +	}
> +	eth_setenv_enetaddr("ethaddr", sernum);
> +}
> +
> +int board_eth_init(bd_t *bis)
> +{
> +	int rc = 0;
> +
> +	cdu9g25_init_enetaddr();
> +	rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC0, 0x00);
> +
> +	return rc;
> +}
> +
> +static void cdu9g25_led_init(void)
> +{
> +	at91_set_gpio_output(CONFIG_LED_B, 1);
> +	at91_set_gpio_value(CONFIG_LED_B, 0);
> +}
> +
> +int board_early_init_f(void)
> +{
> +	at91_seriald_hw_init();
> +
> +	return 0;
> +}
> +
> +int board_init(void)
> +{
> +	gd->bd->bi_arch_number = MACH_TYPE_CDU9G25;
> +
> +	/* adress of boot parameters */
> +	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
> +
> +	cdu9g25_led_init();
> +
> +	cdu9g25_nand_hw_init();
> +
> +	cdu9g25_spi0_hw_init();
> +
> +	at91_macb_hw_init();
> +
> +	return 0;
> +}
> +
> +int dram_init(void)
> +{
> +	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
> +		CONFIG_SYS_SDRAM_SIZE);
> +
> +	return 0;
> +}
> +
> +#ifdef CONFIG_RESET_PHY_R
> +void reset_phy(void)
> +{
> +}
> +#endif
> +
> diff --git a/boards.cfg b/boards.cfg
> index dbd8479..7a7d39e 100644
> --- a/boards.cfg
> +++ b/boards.cfg
> @@ -77,6 +77,7 @@ Active  arm         arm926ejs      -           armltd          integrator
>  Active  arm         arm926ejs      armada100   Marvell         -                   aspenite                             -                                                                                                                                 Prafulla Wadaskar <prafulla at marvell.com>
>  Active  arm         arm926ejs      armada100   Marvell         -                   gplugd                               -                                                                                                                                 Ajay Bhargav <ajay.bhargav at einfochips.com>
>  Active  arm         arm926ejs      at91        -               -                   afeb9260                             -                                                                                                                                 Sergey Lapin <slapin at ossfans.org>
> +Active  arm         arm926ejs      at91        AKsignal        cdu9g25             cdu9g25                              -                                                                                                                                 Jiri Prchal <jiri.prchal at aksignal.cz>
>  Active  arm         arm926ejs      at91        atmel           at91sam9260ek       at91sam9260ek_dataflash_cs0          at91sam9260ek:AT91SAM9260,SYS_USE_DATAFLASH_CS0                                                                                   Stelian Pop <stelian at popies.net>
>  Active  arm         arm926ejs      at91        atmel           at91sam9260ek       at91sam9260ek_dataflash_cs1          at91sam9260ek:AT91SAM9260,SYS_USE_DATAFLASH_CS1                                                                                   Stelian Pop <stelian at popies.net>
>  Active  arm         arm926ejs      at91        atmel           at91sam9260ek       at91sam9260ek_nandflash              at91sam9260ek:AT91SAM9260,SYS_USE_NANDFLASH                                                                                       Stelian Pop <stelian at popies.net>
> diff --git a/include/configs/cdu9g25.h b/include/configs/cdu9g25.h
> new file mode 100644
> index 0000000..a4189cc
> --- /dev/null
> +++ b/include/configs/cdu9g25.h
> @@ -0,0 +1,210 @@
> +/*
> + * (C) Copyright 2013
> + * Jiri Prchal <jiri.prchal at aksignal.cz>
> + * AK signal <www.aksignal.cz>
> + *
> + * SPDX-License-Identifier:	GPL-2.0+
> + */
> +
> +#ifndef __CONFIG_H__
> +#define __CONFIG_H__
> +
> +#define CONFIG_AT91SAM9X5
> +#include <asm/hardware.h>
> +
> +/* ARM asynchronous clock */
> +#define CONFIG_SYS_AT91_SLOW_CLOCK	32768		/* slow clock xtal */
> +#define CONFIG_SYS_AT91_MAIN_CLOCK	12000000	/* main clock xtal */
> +#define CONFIG_SYS_HZ			1000
> +
> +/* Define actual evaluation board type from used processor type */
> +#define CONFIG_CDU9G25
> +#define CONFIG_AT91FAMILY
> +#define CONFIG_IDENT_STRING	"_cdu9g25"
> +
> +/* Misc CPU related */
> +#define CONFIG_CMDLINE_TAG		/* enable passing of ATAGs */
> +#define CONFIG_SETUP_MEMORY_TAGS
> +#define CONFIG_INITRD_TAG
> +#define CONFIG_SKIP_LOWLEVEL_INIT
> +#define CONFIG_BOARD_EARLY_INIT_F
> +#define CONFIG_DISPLAY_CPUINFO
> +
> +#define CONFIG_CMD_BOOTZ
> +#define CONFIG_OF_LIBFDT
> +
> +/* general purpose I/O */
> +#define CONFIG_ATMEL_LEGACY		/* required until (g)pio is fixed */

I doubt you need this for gpio. Could you please check, if it is really
required?

> +#define CONFIG_AT91_GPIO
> +#define CONFIG_AT91_GPIO_PULLUP	1	/* keep pullups on peripheral pins */
> +
> +/* LEDs */
> +#define	CONFIG_LED_R		AT91_PIN_PB18
> +#define	CONFIG_LED_G		AT91_PIN_PB16
> +#define	CONFIG_LED_Y		AT91_PIN_PB14
> +#define	CONFIG_LED_B		AT91_PIN_PB12
> +
> +/* serial console */
> +#define CONFIG_ATMEL_USART
> +#define CONFIG_USART_BASE		ATMEL_BASE_DBGU
> +#define CONFIG_USART_ID			ATMEL_ID_SYS
> +#define CONFIG_BAUDRATE			115200
> +
> +#define CONFIG_BOOTDELAY	3
> +#define CONFIG_RESET_TO_RETRY
> +#define CONFIG_BOOT_RETRY_TIME	600
> +
> +#define CONFIG_HW_WATCHDOG
> +#define CONFIG_AT91SAM9_WATCHDOG
> +
> +/* SPI */
> +#define CONFIG_ATMEL_SPI
> +#define CONFIG_CMD_SPI
> +
> +/* RAMTRON FRAM */
> +#define CONFIG_CMD_SF
> +#define CONFIG_ATMEL_SPI0		/* SPI used for FRAM is SPI0 */

This define (CONFIG_ATMEL_SPI0) is not required nor is it somewhere
declared. It is just used in the top9000 board where this define is used
to switch on/off by config usage of spi0.

> +#define CONFIG_SPI_FLASH		/* RAMTRON FRAM on SPI bus */
> +#define CONFIG_SPI_FRAM_RAMTRON
> +
> +/*
> + * BOOTP options
> + */
> +#define CONFIG_BOOTP_BOOTFILESIZE
> +#define CONFIG_BOOTP_BOOTPATH
> +#define CONFIG_BOOTP_GATEWAY
> +#define CONFIG_BOOTP_HOSTNAME
> +
> +/*
> + * Command line configuration.
> + */
> +#include <config_cmd_default.h>
> +#undef CONFIG_CMD_FPGA
> +#undef CONFIG_CMD_IMI
> +#undef CONFIG_CMD_IMLS
> +#undef CONFIG_CMD_LOADS
> +
> +#define CONFIG_CMD_PING
> +#define CONFIG_CMD_DHCP
> +#define CONFIG_CMD_NAND
> +#define CONFIG_CMD_MMC
> +#define CONFIG_CMD_FAT
> +
> +/*
> + * SDRAM: 1 bank, 128 MB
> + * Initialized before u-boot gets started.
> + */
> +#define CONFIG_NR_DRAM_BANKS		1
> +#define CONFIG_SYS_SDRAM_BASE		0x20000000 /* ATMEL_BASE_CS1 */
> +#define CONFIG_SYS_SDRAM_SIZE		0x08000000
> +#define CONFIG_SYS_TEXT_BASE		0x27f00000
> +
> +/*
> + * Initial stack pointer: 4k - GENERATED_GBL_DATA_SIZE in internal SRAM,
> + * leaving the correct space for initial global data structure above
> + * that address while providing maximum stack area below.
> + */
> +#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_SYS_SDRAM_BASE + 4 * 1024\
> +				- GENERATED_GBL_DATA_SIZE)
> +
> +/* no NOR flash */
> +#define CONFIG_SYS_NO_FLASH
> +
> +/* NAND flash */
> +#define CONFIG_NAND_ATMEL
> +#define CONFIG_SYS_MAX_NAND_DEVICE	1
> +#define CONFIG_SYS_NAND_BASE		0x40000000
> +#define CONFIG_SYS_NAND_MASK_ALE	(1 << 21)
> +#define CONFIG_SYS_NAND_MASK_CLE	(1 << 22)
> +#define CONFIG_SYS_NAND_ENABLE_PIN	AT91_PIN_PD4
> +#define CONFIG_SYS_NAND_READY_PIN	AT91_PIN_PD5

Damn .. you need the legacy stuff here. We really should convert it soon!

> +
> +/* PMECC & PMERRLOC */
> +#define CONFIG_ATMEL_NAND_HWECC
> +#define CONFIG_ATMEL_NAND_HW_PMECC
> +#define CONFIG_PMECC_CAP		8
> +#define CONFIG_PMECC_SECTOR_SIZE	512
> +
> +#define CONFIG_MTD_DEVICE
> +#define CONFIG_CMD_MTDPARTS
> +#define CONFIG_MTD_PARTITIONS
> +#define CONFIG_RBTREE
> +#define CONFIG_LZO
> +#define CONFIG_CMD_UBI
> +#define CONFIG_CMD_UBIFS
> +#define CONFIG_CMD_NAND_TRIMFFS
> +#define MTDIDS_DEFAULT			"nand0=nand"
> +#define MTDPARTS_DEFAULT		"mtdparts=nand:256k(bootstrap),"\
> +					"768k(uboot),256k(ubootenv),"\
> +					"4864k(kernel),"\
> +					"-(root)"

just to mention it:
 a) a secondary env is sometimes useful
 b) 256k is you page size, isn't it? how about bad blocks?

> +
> +/* MMC */
> +#ifdef CONFIG_CMD_MMC
> +#define CONFIG_MMC
> +#define CONFIG_GENERIC_MMC
> +#define CONFIG_GENERIC_ATMEL_MCI
> +#endif
> +
> +/* FAT */
> +#ifdef CONFIG_CMD_FAT
> +#define CONFIG_DOS_PARTITION
> +#endif
> +
> +/* Ethernet */
> +#define CONFIG_MACB
> +#define CONFIG_RMII
> +#define CONFIG_NET_RETRY_COUNT		20
> +#define CONFIG_MACB_SEARCH_PHY
> +#define CONFIG_RANDOM_MACADDR
> +
> +/* USB */
> +#ifdef CONFIG_CMD_USB
> +#ifdef CONFIG_USB_EHCI
> +#define CONFIG_USB_EHCI_ATMEL
> +#define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS	2
> +#else
> +#define CONFIG_USB_OHCI_NEW
> +#define CONFIG_SYS_USB_OHCI_CPU_INIT
> +#define CONFIG_SYS_USB_OHCI_REGS_BASE		ATMEL_BASE_OHCI
> +#define CONFIG_SYS_USB_OHCI_SLOT_NAME		"at91sam9x5"
> +#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	3
> +#endif
> +#define CONFIG_USB_ATMEL
> +#define CONFIG_USB_STORAGE
> +#endif
> +
> +#define CONFIG_SYS_LOAD_ADDR		0x21000000 /* load address */
> +
> +#define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
> +#define CONFIG_SYS_MEMTEST_END		CONFIG_SYS_TEXT_BASE
> +
> +/* CONFIG_SYS_USE_NANDFLASH */
> +/* bootstrap + u-boot + env + linux in nandflash */
> +#define CONFIG_ENV_IS_IN_NAND
> +#define CONFIG_ENV_OFFSET	0x100000
> +#define CONFIG_ENV_SIZE		0x20000 /* 1 sector = 128kB */
> +#define CONFIG_ENV_RANGE	0x40000 /* 2 sectors for bad sector handling */

ah, got it. so you have a chance to have one of the sectors working.

> +#define CONFIG_BOOTCOMMAND	"nand read 21000000 kernel; bootm"
> +#define CONFIG_BOOTARGS		"console=ttyS0,115200 ubi.mtd=root "\
> +				"root=ubi0:root rootfstype=ubifs rw"
> +#define CONFIG_SERVERIP		10.0.1.1
> +#define CONFIG_BOOTFILE		"kernel_cdu9g25"
> +#define CONFIG_PREBOOT		"mtdparts default" /* for partitions */

Would you really like to always reset a new mtd partitioning on every
boot to the default one?

> +
> +#define CONFIG_SYS_PROMPT	"U-Boot> "
> +#define CONFIG_SYS_CBSIZE	256
> +#define CONFIG_SYS_MAXARGS	16
> +#define CONFIG_SYS_PBSIZE	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT)\
> +				+ 16)
> +#define CONFIG_SYS_LONGHELP
> +#define CONFIG_CMDLINE_EDITING
> +#define CONFIG_AUTO_COMPLETE
> +#define CONFIG_SYS_HUSH_PARSER
> +
> +/*
> + * Size of malloc() pool
> + */
> +#define CONFIG_SYS_MALLOC_LEN		(512 * 1024 + CONFIG_ENV_SIZE)

512 KiB may be too small for recovering UBI partitions ... 1-4 MiB is
more likely.

> +
> +#endif
> --
> 1.7.9.5
> 

Best regards

Andreas Bießmann



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