[U-Boot-Users] Re: [git patch] MPC8349ADS

[David Updegraff <dave@cray.com>]

Is there a reason this pci.c file lives under board/mpc8349ads instead
of under cpu/mpc83xx ???  Do we each really need to duplicate the whole
thing?

> Please pull from 'mpc8349ads' branch of
> git.kernel.org:/pub/scm/boot/u-boot/u-boot.git
> 
> to receive the following updates:
> 
>  CHANGELOG                     |    3 
>  board/mpc8349ads/Makefile     |    2 
>  board/mpc8349ads/mpc8349ads.c |   41 ----
>  board/mpc8349ads/pci.c        |  380 ++++++++++++++++++++++++++++++++++++++++++
>  include/asm-ppc/mpc8349_pci.h |    1 
>  include/configs/MPC8349ADS.h  |   24 +-
>  6 files changed, 400 insertions(+), 51 deletions(-)
> 
> Kumar Gala:
>       Added PCI support for MPC8349ADS board
> 
> diff --git a/CHANGELOG b/CHANGELOG
> index c1da98f..6c66441 100644
> --- a/CHANGELOG
> +++ b/CHANGELOG
> @@ -2,6 +2,9 @@
>  Changes since U-Boot 1.1.4:
>  ======================================================================
>  
> +* Added PCI support for MPC8349ADS board
> +  Patch by Kumar Gala 11 Jan 2006
> +
>  * Add support for 28F256J3A flah (=> 64 MB) on PM520 board
>  
>  * Fix compiler problem with at91rm9200dk board.
> diff --git a/board/mpc8349ads/Makefile b/board/mpc8349ads/Makefile
> index 4327b0d..f865f9c 100644
> --- a/board/mpc8349ads/Makefile
> +++ b/board/mpc8349ads/Makefile
> @@ -24,7 +24,7 @@ include $(TOPDIR)/config.mk
>  
>  LIB	= lib$(BOARD).a
>  
> -OBJS	:= $(BOARD).o
> +OBJS	:= $(BOARD).o pci.o
>  
>  $(LIB):	$(OBJS) $(SOBJS)
>  	$(AR) crv $@ $(OBJS)
> diff --git a/board/mpc8349ads/mpc8349ads.c b/board/mpc8349ads/mpc8349ads.c
> index da8d3d7..505acbc 100644
> --- a/board/mpc8349ads/mpc8349ads.c
> +++ b/board/mpc8349ads/mpc8349ads.c
> @@ -147,47 +147,6 @@ int checkboard (void)
>  	return 0;
>  }
>  
> -#if defined(CONFIG_PCI)
> -/*
> - * Initialize PCI Devices, report devices found
> - */
> -#ifndef CONFIG_PCI_PNP
> -static struct pci_config_table pci_mpc83xxads_config_table[] = {
> -	{PCI_ANY_ID,PCI_ANY_ID,PCI_ANY_ID,PCI_ANY_ID,
> -	pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
> -				    PCI_ENET0_MEMADDR,
> -				    PCI_COMMON_MEMORY | PCI_COMMAND_MASTER
> -	} },
> -	{}
> -}
> -#endif
> -
> -
> -volatile static struct pci_controller hose[] = {
> -	{
> -#ifndef CONFIG_PCI_PNP
> -	config_table:pci_mpc83xxads_config_table,
> -#endif
> -	},
> -	{
> -#ifndef CONFIG_PCI_PNP
> -	config_table:pci_mpc83xxads_config_table,
> -#endif
> -	}
> -};
> -#endif /* CONFIG_PCI */
> -
> -
> -void
> -pci_init_board(void)
> -{
> -#ifdef CONFIG_PCI
> -	extern void pci_mpc83xx_init(volatile struct pci_controller *hose);
> -
> -	pci_mpc83xx_init(hose);
> -#endif /* CONFIG_PCI */
> -}
> -
>  /*
>   * if MPC8349ADS is soldered with SDRAM
>   */
> diff --git a/board/mpc8349ads/pci.c b/board/mpc8349ads/pci.c
> new file mode 100644
> index 0000000..6cafbaa
> --- /dev/null
> +++ b/board/mpc8349ads/pci.c
> @@ -0,0 +1,380 @@
> +/*
> + * See file CREDITS for list of people who contributed to this
> + * project.
> + *
> + * 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., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + *
> + */
> +
> +#include <asm/mmu.h>
> +#include <common.h>
> +#include <asm/global_data.h>
> +#include <pci.h>
> +#include <asm/mpc8349_pci.h>
> +#include <i2c.h>
> +
> +#ifdef CONFIG_PCI
> +
> +/* System RAM mapped to PCI space */
> +#define CONFIG_PCI_SYS_MEM_BUS	CFG_SDRAM_BASE
> +#define CONFIG_PCI_SYS_MEM_PHYS	CFG_SDRAM_BASE
> +
> +#ifndef CONFIG_PCI_PNP
> +static struct pci_config_table pci_mpc83xxads_config_table[] = {
> +	{PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
> +	 PCI_IDSEL_NUMBER, PCI_ANY_ID,
> + 	 pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
> +				     PCI_ENET0_MEMADDR,
> +				     PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
> +		}
> +	},
> +	{}
> +};
> +#endif
> +
> +static struct pci_controller pci_hose[] = {
> +       {
> +#ifndef CONFIG_PCI_PNP
> +       config_table:pci_mpc83xxads_config_table,
> +#endif
> +       },
> +       {
> +#ifndef CONFIG_PCI_PNP
> +       config_table:pci_mpc83xxads_config_table,
> +#endif
> +       }
> +};
> +
> +/**************************************************************************
> + *
> + * pib_init() -- initialize the PCA9555PW IO expander on the PIB board
> + *
> + */
> +void
> +pib_init(void)
> +{
> +	u8 val8;
> +	/*
> +	 * Assign PIB PMC slot to desired PCI bus
> +	 */
> +	mpc8349_i2c = (i2c_t*)(CFG_IMMRBAR + CFG_I2C2_OFFSET);
> +	i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
> +
> +	val8 = 0;
> +	i2c_write(0x23, 0x6, 1, &val8, 1);
> +	i2c_write(0x23, 0x7, 1, &val8, 1);
> +	val8 = 0xff;
> +	i2c_write(0x23, 0x2, 1, &val8, 1);
> +	i2c_write(0x23, 0x3, 1, &val8, 1);
> +
> +	val8 = 0;
> +	i2c_write(0x26, 0x6, 1, &val8, 1);
> +	val8 = 0x34;
> +	i2c_write(0x26, 0x7, 1, &val8, 1);
> +#if defined(PCI_64BIT)
> +	val8 = 0xf4;	/* PMC2:PCI1/64-bit */
> +#elif defined(PCI_ALL_PCI1)
> +	val8 = 0xf3;	/* PMC1:PCI1 PMC2:PCI1 PMC3:PCI1 */
> +#elif defined(PCI_ONE_PCI1)
> +	val8 = 0xf9;	/* PMC1:PCI1 PMC2:PCI2 PMC3:PCI2 */
> +#else
> +	val8 = 0xf5;	/* PMC1:PCI1 PMC2:PCI1 PMC3:PCI2 */
> +#endif
> +	i2c_write(0x26, 0x2, 1, &val8, 1);
> +	val8 = 0xff;
> +	i2c_write(0x26, 0x3, 1, &val8, 1);
> +	val8 = 0;
> +	i2c_write(0x27, 0x6, 1, &val8, 1);
> +	i2c_write(0x27, 0x7, 1, &val8, 1);
> +	val8 = 0xff;
> +	i2c_write(0x27, 0x2, 1, &val8, 1);
> +	val8 = 0xef;
> +	i2c_write(0x27, 0x3, 1, &val8, 1);
> +	asm("eieio");
> +
> +#if defined(PCI_64BIT)
> +	printf("PCI1: 64-bit on PMC2\n");
> +#elif defined(PCI_ALL_PCI1)
> +	printf("PCI1: 32-bit on PMC1, PMC2, PMC3\n");
> +#elif defined(PCI_ONE_PCI1)
> +	printf("PCI1: 32-bit on PMC1\n");
> +	printf("PCI2: 32-bit on PMC2, PMC3\n");
> +#else
> +	printf("PCI1: 32-bit on PMC1, PMC2\n");
> +	printf("PCI2: 32-bit on PMC3\n");
> +#endif
> +}
> +
> +/**************************************************************************
> + * pci_init_board()
> + *
> + * NOTICE: PCI2 is not currently supported
> + *
> + */
> +void
> +pci_init_board(void)
> +{
> +	DECLARE_GLOBAL_DATA_PTR;
> +	volatile immap_t *	immr;
> +	volatile clk8349_t *	clk;
> +	volatile law8349_t *	pci_law;
> +	volatile pot8349_t *	pci_pot;
> +	volatile pcictrl8349_t *	pci_ctrl;
> +	volatile pciconf8349_t *	pci_conf;
> +	u16 reg16;
> +	u32 reg32;
> +	u32 dev;
> +	struct	pci_controller * hose;
> +
> +	immr = (immap_t *)CFG_IMMRBAR;
> +	clk = (clk8349_t *)&immr->clk;
> +	pci_law = immr->sysconf.pcilaw;
> +	pci_pot = immr->ios.pot;
> +	pci_ctrl = immr->pci_ctrl;
> +	pci_conf = immr->pci_conf;
> +
> +	hose = &pci_hose[0];
> +
> +	pib_init();
> +
> +	/*
> +	 * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
> +	 */
> +
> +	reg32 = clk->occr;
> +	udelay(2000);
> +	clk->occr = 0xff000000;
> +	udelay(2000);
> +
> +	/*
> +	 * Release PCI RST Output signal
> +	 */
> +	pci_ctrl[0].gcr = 0;
> +	udelay(2000);
> +	pci_ctrl[0].gcr = 1;
> +
> +#ifdef CONFIG_MPC83XX_PCI2
> +	pci_ctrl[1].gcr = 0;
> +	udelay(2000);
> +	pci_ctrl[1].gcr = 1;
> +#endif
> +
> +	/* We need to wait at least a 1sec based on PCI specs */
> +	{
> +		int i;
> +
> +		for (i = 0; i < 1000; ++i)
> +			udelay (1000);
> +	}
> +
> +	/*
> +	 * Configure PCI Local Access Windows
> +	 */
> +	pci_law[0].bar = CFG_PCI1_MEM_PHYS & LAWBAR_BAR;
> +	pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
> +
> +	pci_law[1].bar = CFG_PCI1_IO_PHYS & LAWBAR_BAR;
> +	pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;
> +
> +	/*
> +	 * Configure PCI Outbound Translation Windows
> +	 */
> +
> +	/* PCI1 mem space - prefetch */
> +	pci_pot[0].potar = (CFG_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
> +	pci_pot[0].pobar = (CFG_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
> +	pci_pot[0].pocmr = POCMR_EN | POCMR_PREFETCH_EN | (POCMR_CM_256M & POCMR_CM_MASK);
> +
> +	/* PCI1 IO space */
> +	pci_pot[1].potar = (CFG_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
> +	pci_pot[1].pobar = (CFG_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
> +	pci_pot[1].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_1M & POCMR_CM_MASK);
> +
> +	/* PCI1 mmio - non-prefetch mem space */
> +	pci_pot[2].potar = (CFG_PCI1_MMIO_BASE >> 12) & POTAR_TA_MASK;
> +	pci_pot[2].pobar = (CFG_PCI1_MMIO_PHYS >> 12) & POBAR_BA_MASK;
> +	pci_pot[2].pocmr = POCMR_EN | (POCMR_CM_256M & POCMR_CM_MASK);
> +
> +	/*
> +	 * Configure PCI Inbound Translation Windows
> +	 */
> +
> +	/* we need RAM mapped to PCI space for the devices to
> +	 * access main memory */
> +	pci_ctrl[0].pitar1 = 0x0;
> +	pci_ctrl[0].pibar1 = 0x0;
> +	pci_ctrl[0].piebar1 = 0x0;
> +	pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);
> +
> +	hose->first_busno = 0;
> +	hose->last_busno = 0xff;
> +
> +	/* PCI memory prefetch space */
> +	pci_set_region(hose->regions + 0,
> +		       CFG_PCI1_MEM_BASE,
> +		       CFG_PCI1_MEM_PHYS,
> +		       CFG_PCI1_MEM_SIZE,
> +		       PCI_REGION_MEM|PCI_REGION_PREFETCH);
> +
> +	/* PCI memory space */
> +	pci_set_region(hose->regions + 1,
> +		       CFG_PCI1_MMIO_BASE,
> +		       CFG_PCI1_MMIO_PHYS,
> +		       CFG_PCI1_MMIO_SIZE,
> +		       PCI_REGION_MEM);
> +
> +	/* PCI IO space */
> +	pci_set_region(hose->regions + 2,
> +		       CFG_PCI1_IO_BASE,
> +		       CFG_PCI1_IO_PHYS,
> +		       CFG_PCI1_IO_SIZE,
> +		       PCI_REGION_IO);
> +
> +	/* System memory space */
> +	pci_set_region(hose->regions + 3,
> +		       CONFIG_PCI_SYS_MEM_BUS,
> +                       CONFIG_PCI_SYS_MEM_PHYS,
> +                       gd->ram_size,
> +                       PCI_REGION_MEM | PCI_REGION_MEMORY);
> +
> +	hose->region_count = 4;
> +
> +	pci_setup_indirect(hose,
> +			   (CFG_IMMRBAR+0x8300),
> +			   (CFG_IMMRBAR+0x8304));
> +
> +	pci_register_hose(hose);
> +
> +	/*
> +	 * Write to Command register
> +	 */
> +	reg16 = 0xff;
> +	dev = PCI_BDF(hose->first_busno, 0, 0);
> +	pci_hose_read_config_word (hose, dev, PCI_COMMAND, &reg16);
> +	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
> +	pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
> +
> +	/*
> +	 * Clear non-reserved bits in status register.
> +	 */
> +	pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
> +	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
> +	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
> +
> +#ifdef CONFIG_PCI_SCAN_SHOW
> +	printf("PCI:   Bus Dev VenId DevId Class Int\n");
> +#endif
> +	/*
> +	 * Hose scan.
> +	 */
> +	hose->last_busno = pci_hose_scan(hose);
> +
> +#ifdef CONFIG_MPC83XX_PCI2
> +	hose = &pci_hose[1];
> +
> +	/*
> +	 * Configure PCI Outbound Translation Windows
> +	 */
> +
> +	/* PCI2 mem space - prefetch */
> +	pci_pot[3].potar = (CFG_PCI2_MEM_BASE >> 12) & POTAR_TA_MASK;
> +	pci_pot[3].pobar = (CFG_PCI2_MEM_PHYS >> 12) & POBAR_BA_MASK;
> +	pci_pot[3].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_PREFETCH_EN | (POCMR_CM_256M & POCMR_CM_MASK);
> +
> +	/* PCI2 IO space */
> +	pci_pot[4].potar = (CFG_PCI2_IO_BASE >> 12) & POTAR_TA_MASK;
> +	pci_pot[4].pobar = (CFG_PCI2_IO_PHYS >> 12) & POBAR_BA_MASK;
> +	pci_pot[4].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_IO | (POCMR_CM_1M & POCMR_CM_MASK);
> +
> +	/* PCI2 mmio - non-prefetch mem space */
> +	pci_pot[5].potar = (CFG_PCI2_MMIO_BASE >> 12) & POTAR_TA_MASK;
> +	pci_pot[5].pobar = (CFG_PCI2_MMIO_PHYS >> 12) & POBAR_BA_MASK;
> +	pci_pot[5].pocmr = POCMR_EN | POCMR_PCI2 | (POCMR_CM_256M & POCMR_CM_MASK);
> +
> +	/*
> +	 * Configure PCI Inbound Translation Windows
> +	 */
> +
> +	/* we need RAM mapped to PCI space for the devices to
> +	 * access main memory */
> +	pci_ctrl[1].pitar1 = 0x0;
> +	pci_ctrl[1].pibar1 = 0x0;
> +	pci_ctrl[1].piebar1 = 0x0;
> +	pci_ctrl[1].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);
> +
> +	hose->first_busno = pci_hose[0].last_busno + 1;
> +	hose->last_busno = 0xff;
> +
> +	/* PCI memory prefetch space */
> +	pci_set_region(hose->regions + 0,
> +		       CFG_PCI2_MEM_BASE,
> +		       CFG_PCI2_MEM_PHYS,
> +		       CFG_PCI2_MEM_SIZE,
> +		       PCI_REGION_MEM|PCI_REGION_PREFETCH);
> +
> +	/* PCI memory space */
> +	pci_set_region(hose->regions + 1,
> +		       CFG_PCI2_MMIO_BASE,
> +		       CFG_PCI2_MMIO_PHYS,
> +		       CFG_PCI2_MMIO_SIZE,
> +		       PCI_REGION_MEM);
> +
> +	/* PCI IO space */
> +	pci_set_region(hose->regions + 2,
> +		       CFG_PCI2_IO_BASE,
> +		       CFG_PCI2_IO_PHYS,
> +		       CFG_PCI2_IO_SIZE,
> +		       PCI_REGION_IO);
> +
> +	/* System memory space */
> +	pci_set_region(hose->regions + 3,
> +		       CONFIG_PCI_SYS_MEM_BUS,
> +                       CONFIG_PCI_SYS_MEM_PHYS,
> +                       gd->ram_size,
> +                       PCI_REGION_MEM | PCI_REGION_MEMORY);
> +
> +	hose->region_count = 4;
> +
> +	pci_setup_indirect(hose,
> +			   (CFG_IMMRBAR+0x8380),
> +			   (CFG_IMMRBAR+0x8384));
> +
> +	pci_register_hose(hose);
> +
> +	/*
> +	 * Write to Command register
> +	 */
> +	reg16 = 0xff;
> +	dev = PCI_BDF(hose->first_busno, 0, 0);
> +	pci_hose_read_config_word (hose, dev, PCI_COMMAND, &reg16);
> +	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
> +	pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
> +
> +	/*
> +	 * Clear non-reserved bits in status register.
> +	 */
> +	pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
> +	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
> +	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);
> +
> +	/*
> +	 * Hose scan.
> +	 */
> +	hose->last_busno = pci_hose_scan(hose);
> +#endif
> +
> +}
> +#endif /* CONFIG_PCI */
> diff --git a/include/asm-ppc/mpc8349_pci.h b/include/asm-ppc/mpc8349_pci.h
> index 48255a3..7a1adba 100644
> --- a/include/asm-ppc/mpc8349_pci.h
> +++ b/include/asm-ppc/mpc8349_pci.h
> @@ -77,6 +77,7 @@
>  #define POCMR_ENABLE        0x80000000
>  #define POCMR_PCI_IO        0x40000000
>  #define POCMR_PREFETCH_EN   0x20000000
> +#define POCMR_PCI2          0x10000000
>  
>  /* Soft PCI reset */
>  
> diff --git a/include/configs/MPC8349ADS.h b/include/configs/MPC8349ADS.h
> index d6d2fab..5677fa1 100644
> --- a/include/configs/MPC8349ADS.h
> +++ b/include/configs/MPC8349ADS.h
> @@ -41,9 +41,8 @@
>  #define CONFIG_MPC8349		1	/* MPC8349 specific */
>  #define CONFIG_MPC8349ADS	1	/* MPC8349ADS board specific */
>  
> -/* FIXME: Real PCI support will come in a follow-up update. */
> -#undef CONFIG_PCI
> -
> +#define CONFIG_PCI
> +#undef  CONFIG_MPC83XX_PCI2		/* support for 2nd PCI controller */
>  #define CONFIG_TSEC_ENET 		/* tsec ethernet support */
>  #define CONFIG_ENV_OVERWRITE
>  
> @@ -324,19 +323,26 @@
>   * General PCI
>   * Addresses are mapped 1-1.
>   */
> +
>  #define CFG_PCI1_MEM_BASE	0x80000000
>  #define CFG_PCI1_MEM_PHYS	CFG_PCI1_MEM_BASE
> -#define CFG_PCI1_MEM_SIZE	0x20000000	/* 512M */
> +#define CFG_PCI1_MEM_SIZE	0x10000000	/* 256M */
> +#define CFG_PCI1_MMIO_BASE	0x90000000
> +#define CFG_PCI1_MMIO_PHYS	CFG_PCI1_MMIO_BASE
> +#define CFG_PCI1_MMIO_SIZE	0x10000000	/* 256M */
>  #define CFG_PCI1_IO_BASE	0x00000000
>  #define CFG_PCI1_IO_PHYS	0xe2000000
> -#define CFG_PCI1_IO_SIZE	0x1000000	/* 16M */
> +#define CFG_PCI1_IO_SIZE	0x00100000	/* 1M */
>  
> -#define CFG_PCI2_MEM_BASE	0xA0000000
> +#define CFG_PCI2_MEM_BASE	0xa0000000
>  #define CFG_PCI2_MEM_PHYS	CFG_PCI2_MEM_BASE
> -#define CFG_PCI2_MEM_SIZE	0x20000000	/* 512M */
> +#define CFG_PCI2_MEM_SIZE	0x10000000	/* 256M */
> +#define CFG_PCI2_MMIO_BASE	0xb0000000
> +#define CFG_PCI2_MMIO_PHYS	CFG_PCI2_MMIO_BASE
> +#define CFG_PCI2_MMIO_SIZE	0x10000000	/* 256M */
>  #define CFG_PCI2_IO_BASE	0x00000000
> -#define CFG_PCI2_IO_PHYS	0xe3000000
> -#define CFG_PCI2_IO_SIZE	0x1000000	/* 16M */
> +#define CFG_PCI2_IO_PHYS	0xe2100000
> +#define CFG_PCI2_IO_SIZE	0x00100000	/* 1M */
>  #if defined(CONFIG_PCI)
>  
>  #define PCI_ALL_PCI1
> 
> 
> 
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