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u-boot/cpu/mpc83xx/cpu_init.c
Kim Phillips c7190f028f mpc83xx: retain POR values of non-configured ACR, SPCR, SCCR, and LCRR bitfields 
some LCRR bits are not documented throughout the 83xx family RMs.
New board porters copying similar board configurations might omit
setting e.g., DBYP since it was not documented in their SoC's RM.

Prevent them bricking their board by retaining power on reset values
in bit fields that the board porter doesn't explicitly configure
via CONFIG_SYS_<registername>_<bitfield> assignments in the board
config file.

also move LCRR assignment to cpu_init_r[am] to help ensure no
transactions are being executed via the local bus while CLKDIV is being
modified.

also start to use i/o accessors.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2009-09-26 21:19:38 -05:00

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/*
* Copyright (C) 2004-2009 Freescale Semiconductor, Inc.
*
* 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 <common.h>
#include <mpc83xx.h>
#include <ioports.h>
#include <asm/io.h>
#ifdef CONFIG_USB_EHCI_FSL
#include <usb/ehci-fsl.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_QE
extern qe_iop_conf_t qe_iop_conf_tab[];
extern void qe_config_iopin(u8 port, u8 pin, int dir,
int open_drain, int assign);
extern void qe_init(uint qe_base);
extern void qe_reset(void);
static void config_qe_ioports(void)
{
u8 port, pin;
int dir, open_drain, assign;
int i;
for (i = 0; qe_iop_conf_tab[i].assign != QE_IOP_TAB_END; i++) {
port = qe_iop_conf_tab[i].port;
pin = qe_iop_conf_tab[i].pin;
dir = qe_iop_conf_tab[i].dir;
open_drain = qe_iop_conf_tab[i].open_drain;
assign = qe_iop_conf_tab[i].assign;
qe_config_iopin(port, pin, dir, open_drain, assign);
}
}
#endif
/*
* Breathe some life into the CPU...
*
* Set up the memory map,
* initialize a bunch of registers,
* initialize the UPM's
*/
void cpu_init_f (volatile immap_t * im)
{
__be32 acr_mask =
#ifdef CONFIG_SYS_ACR_PIPE_DEP /* Arbiter pipeline depth */
(ACR_PIPE_DEP << ACR_PIPE_DEP_SHIFT) |
#endif
#ifdef CONFIG_SYS_ACR_RPTCNT /* Arbiter repeat count */
(ACR_RPTCNT << ACR_RPTCNT_SHIFT) |
#endif
0;
__be32 acr_val =
#ifdef CONFIG_SYS_ACR_PIPE_DEP /* Arbiter pipeline depth */
(CONFIG_SYS_ACR_PIPE_DEP << ACR_PIPE_DEP_SHIFT) |
#endif
#ifdef CONFIG_SYS_ACR_RPTCNT /* Arbiter repeat count */
(CONFIG_SYS_ACR_RPTCNT << ACR_RPTCNT_SHIFT) |
#endif
0;
__be32 spcr_mask =
#ifdef CONFIG_SYS_SPCR_OPT /* Optimize transactions between CSB and other dev */
(SPCR_OPT << SPCR_OPT_SHIFT) |
#endif
#ifdef CONFIG_SYS_SPCR_TSECEP /* all eTSEC's Emergency priority */
(SPCR_TSECEP << SPCR_TSECEP_SHIFT) |
#endif
#ifdef CONFIG_SYS_SPCR_TSEC1EP /* TSEC1 Emergency priority */
(SPCR_TSEC1EP << SPCR_TSEC1EP_SHIFT) |
#endif
#ifdef CONFIG_SYS_SPCR_TSEC2EP /* TSEC2 Emergency priority */
(SPCR_TSEC2EP << SPCR_TSEC2EP_SHIFT) |
#endif
0;
__be32 spcr_val =
#ifdef CONFIG_SYS_SPCR_OPT
(CONFIG_SYS_SPCR_OPT << SPCR_OPT_SHIFT) |
#endif
#ifdef CONFIG_SYS_SPCR_TSECEP /* all eTSEC's Emergency priority */
(CONFIG_SYS_SPCR_TSECEP << SPCR_TSECEP_SHIFT) |
#endif
#ifdef CONFIG_SYS_SPCR_TSEC1EP /* TSEC1 Emergency priority */
(CONFIG_SYS_SPCR_TSEC1EP << SPCR_TSEC1EP_SHIFT) |
#endif
#ifdef CONFIG_SYS_SPCR_TSEC2EP /* TSEC2 Emergency priority */
(CONFIG_SYS_SPCR_TSEC2EP << SPCR_TSEC2EP_SHIFT) |
#endif
0;
__be32 sccr_mask =
#ifdef CONFIG_SYS_SCCR_ENCCM /* Encryption clock mode */
(SCCR_ENCCM << SCCR_ENCCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_PCICM /* PCI & DMA clock mode */
(SCCR_PCICM << SCCR_PCICM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSECCM /* all TSEC's clock mode */
(SCCR_TSECCM << SCCR_TSECCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC1CM /* TSEC1 clock mode */
(SCCR_TSEC1CM << SCCR_TSEC1CM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC2CM /* TSEC2 clock mode */
(SCCR_TSEC2CM << SCCR_TSEC2CM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC1ON /* TSEC1 clock switch */
(SCCR_TSEC1ON << SCCR_TSEC1ON_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC2ON /* TSEC2 clock switch */
(SCCR_TSEC2ON << SCCR_TSEC2ON_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_USBMPHCM /* USB MPH clock mode */
(SCCR_USBMPHCM << SCCR_USBMPHCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_USBDRCM /* USB DR clock mode */
(SCCR_USBDRCM << SCCR_USBDRCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_SATACM /* SATA controller clock mode */
(SCCR_SATACM << SCCR_SATACM_SHIFT) |
#endif
0;
__be32 sccr_val =
#ifdef CONFIG_SYS_SCCR_ENCCM /* Encryption clock mode */
(CONFIG_SYS_SCCR_ENCCM << SCCR_ENCCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_PCICM /* PCI & DMA clock mode */
(CONFIG_SYS_SCCR_PCICM << SCCR_PCICM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSECCM /* all TSEC's clock mode */
(CONFIG_SYS_SCCR_TSECCM << SCCR_TSECCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC1CM /* TSEC1 clock mode */
(CONFIG_SYS_SCCR_TSEC1CM << SCCR_TSEC1CM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC2CM /* TSEC2 clock mode */
(CONFIG_SYS_SCCR_TSEC2CM << SCCR_TSEC2CM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC1ON /* TSEC1 clock switch */
(CONFIG_SYS_SCCR_TSEC1ON << SCCR_TSEC1ON_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_TSEC2ON /* TSEC2 clock switch */
(CONFIG_SYS_SCCR_TSEC2ON << SCCR_TSEC2ON_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_USBMPHCM /* USB MPH clock mode */
(CONFIG_SYS_SCCR_USBMPHCM << SCCR_USBMPHCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_USBDRCM /* USB DR clock mode */
(CONFIG_SYS_SCCR_USBDRCM << SCCR_USBDRCM_SHIFT) |
#endif
#ifdef CONFIG_SYS_SCCR_SATACM /* SATA controller clock mode */
(CONFIG_SYS_SCCR_SATACM << SCCR_SATACM_SHIFT) |
#endif
0;
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
/* Clear initial global data */
memset ((void *) gd, 0, sizeof (gd_t));
/* system performance tweaking */
clrsetbits_be32(&im->arbiter.acr, acr_mask, acr_val);
clrsetbits_be32(&im->sysconf.spcr, spcr_mask, spcr_val);
clrsetbits_be32(&im->clk.sccr, sccr_mask, sccr_val);
/* RSR - Reset Status Register - clear all status (4.6.1.3) */
gd->reset_status = __raw_readl(&im->reset.rsr);
__raw_writel(~(RSR_RES), &im->reset.rsr);
/* AER - Arbiter Event Register - store status */
gd->arbiter_event_attributes = __raw_readl(&im->arbiter.aeatr);
gd->arbiter_event_address = __raw_readl(&im->arbiter.aeadr);
/*
* RMR - Reset Mode Register
* contains checkstop reset enable (4.6.1.4)
*/
__raw_writel(RMR_CSRE & (1<<RMR_CSRE_SHIFT), &im->reset.rmr);
/* Enable Time Base & Decrementer ( so we will have udelay() )*/
setbits_be32(&im->sysconf.spcr, SPCR_TBEN);
/* System General Purpose Register */
#ifdef CONFIG_SYS_SICRH
#if defined(CONFIG_MPC834x) || defined(CONFIG_MPC8313)
/* regarding to MPC34x manual rev.1 bits 28..29 must be preserved */
__raw_writel((im->sysconf.sicrh & 0x0000000C) | CONFIG_SYS_SICRH,
&im->sysconf.sicrh);
#else
__raw_writel(CONFIG_SYS_SICRH, &im->sysconf.sicrh);
#endif
#endif
#ifdef CONFIG_SYS_SICRL
__raw_writel(CONFIG_SYS_SICRL, &im->sysconf.sicrl);
#endif
#ifdef CONFIG_SYS_DDRCDR /* DDR control driver register */
__raw_writel(CONFIG_SYS_DDRCDR, &im->sysconf.ddrcdr);
#endif
#ifdef CONFIG_SYS_OBIR /* Output buffer impedance register */
__raw_writel(CONFIG_SYS_OBIR, &im->sysconf.obir);
#endif
#ifdef CONFIG_QE
/* Config QE ioports */
config_qe_ioports();
#endif
/*
* Memory Controller:
*/
/* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
* addresses - these have to be modified later when FLASH size
* has been determined
*/
#if defined(CONFIG_SYS_BR0_PRELIM) \
&& defined(CONFIG_SYS_OR0_PRELIM) \
&& defined(CONFIG_SYS_LBLAWBAR0_PRELIM) \
&& defined(CONFIG_SYS_LBLAWAR0_PRELIM)
im->lbus.bank[0].br = CONFIG_SYS_BR0_PRELIM;
im->lbus.bank[0].or = CONFIG_SYS_OR0_PRELIM;
im->sysconf.lblaw[0].bar = CONFIG_SYS_LBLAWBAR0_PRELIM;
im->sysconf.lblaw[0].ar = CONFIG_SYS_LBLAWAR0_PRELIM;
#else
#error CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_LBLAWBAR0_PRELIM & CONFIG_SYS_LBLAWAR0_PRELIM must be defined
#endif
#if defined(CONFIG_SYS_BR1_PRELIM) && defined(CONFIG_SYS_OR1_PRELIM)
im->lbus.bank[1].br = CONFIG_SYS_BR1_PRELIM;
im->lbus.bank[1].or = CONFIG_SYS_OR1_PRELIM;
#endif
#if defined(CONFIG_SYS_LBLAWBAR1_PRELIM) && defined(CONFIG_SYS_LBLAWAR1_PRELIM)
im->sysconf.lblaw[1].bar = CONFIG_SYS_LBLAWBAR1_PRELIM;
im->sysconf.lblaw[1].ar = CONFIG_SYS_LBLAWAR1_PRELIM;
#endif
#if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM)
im->lbus.bank[2].br = CONFIG_SYS_BR2_PRELIM;
im->lbus.bank[2].or = CONFIG_SYS_OR2_PRELIM;
#endif
#if defined(CONFIG_SYS_LBLAWBAR2_PRELIM) && defined(CONFIG_SYS_LBLAWAR2_PRELIM)
im->sysconf.lblaw[2].bar = CONFIG_SYS_LBLAWBAR2_PRELIM;
im->sysconf.lblaw[2].ar = CONFIG_SYS_LBLAWAR2_PRELIM;
#endif
#if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
im->lbus.bank[3].br = CONFIG_SYS_BR3_PRELIM;
im->lbus.bank[3].or = CONFIG_SYS_OR3_PRELIM;
#endif
#if defined(CONFIG_SYS_LBLAWBAR3_PRELIM) && defined(CONFIG_SYS_LBLAWAR3_PRELIM)
im->sysconf.lblaw[3].bar = CONFIG_SYS_LBLAWBAR3_PRELIM;
im->sysconf.lblaw[3].ar = CONFIG_SYS_LBLAWAR3_PRELIM;
#endif
#if defined(CONFIG_SYS_BR4_PRELIM) && defined(CONFIG_SYS_OR4_PRELIM)
im->lbus.bank[4].br = CONFIG_SYS_BR4_PRELIM;
im->lbus.bank[4].or = CONFIG_SYS_OR4_PRELIM;
#endif
#if defined(CONFIG_SYS_LBLAWBAR4_PRELIM) && defined(CONFIG_SYS_LBLAWAR4_PRELIM)
im->sysconf.lblaw[4].bar = CONFIG_SYS_LBLAWBAR4_PRELIM;
im->sysconf.lblaw[4].ar = CONFIG_SYS_LBLAWAR4_PRELIM;
#endif
#if defined(CONFIG_SYS_BR5_PRELIM) && defined(CONFIG_SYS_OR5_PRELIM)
im->lbus.bank[5].br = CONFIG_SYS_BR5_PRELIM;
im->lbus.bank[5].or = CONFIG_SYS_OR5_PRELIM;
#endif
#if defined(CONFIG_SYS_LBLAWBAR5_PRELIM) && defined(CONFIG_SYS_LBLAWAR5_PRELIM)
im->sysconf.lblaw[5].bar = CONFIG_SYS_LBLAWBAR5_PRELIM;
im->sysconf.lblaw[5].ar = CONFIG_SYS_LBLAWAR5_PRELIM;
#endif
#if defined(CONFIG_SYS_BR6_PRELIM) && defined(CONFIG_SYS_OR6_PRELIM)
im->lbus.bank[6].br = CONFIG_SYS_BR6_PRELIM;
im->lbus.bank[6].or = CONFIG_SYS_OR6_PRELIM;
#endif
#if defined(CONFIG_SYS_LBLAWBAR6_PRELIM) && defined(CONFIG_SYS_LBLAWAR6_PRELIM)
im->sysconf.lblaw[6].bar = CONFIG_SYS_LBLAWBAR6_PRELIM;
im->sysconf.lblaw[6].ar = CONFIG_SYS_LBLAWAR6_PRELIM;
#endif
#if defined(CONFIG_SYS_BR7_PRELIM) && defined(CONFIG_SYS_OR7_PRELIM)
im->lbus.bank[7].br = CONFIG_SYS_BR7_PRELIM;
im->lbus.bank[7].or = CONFIG_SYS_OR7_PRELIM;
#endif
#if defined(CONFIG_SYS_LBLAWBAR7_PRELIM) && defined(CONFIG_SYS_LBLAWAR7_PRELIM)
im->sysconf.lblaw[7].bar = CONFIG_SYS_LBLAWBAR7_PRELIM;
im->sysconf.lblaw[7].ar = CONFIG_SYS_LBLAWAR7_PRELIM;
#endif
#ifdef CONFIG_SYS_GPIO1_PRELIM
im->gpio[0].dat = CONFIG_SYS_GPIO1_DAT;
im->gpio[0].dir = CONFIG_SYS_GPIO1_DIR;
#endif
#ifdef CONFIG_SYS_GPIO2_PRELIM
im->gpio[1].dat = CONFIG_SYS_GPIO2_DAT;
im->gpio[1].dir = CONFIG_SYS_GPIO2_DIR;
#endif
#ifdef CONFIG_USB_EHCI_FSL
#ifndef CONFIG_MPC834x
uint32_t temp;
struct usb_ehci *ehci = (struct usb_ehci *)CONFIG_SYS_MPC8xxx_USB_ADDR;
/* Configure interface. */
setbits_be32(&ehci->control, REFSEL_16MHZ | UTMI_PHY_EN);
/* Wait for clock to stabilize */
do {
temp = __raw_readl(&ehci->control);
udelay(1000);
} while (!(temp & PHY_CLK_VALID));
#endif
#endif
}
int cpu_init_r (void)
{
volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
#ifdef CONFIG_QE
uint qe_base = CONFIG_SYS_IMMR + 0x00100000; /* QE immr base */
#endif
__be32 lcrr_mask =
#ifdef CONFIG_SYS_LCRR_DBYP /* PLL bypass */
LCRR_DBYP |
#endif
#ifdef CONFIG_SYS_LCRR_EADC /* external address delay */
LCRR_EADC |
#endif
#ifdef CONFIG_SYS_LCRR_CLKDIV /* system clock divider */
LCRR_CLKDIV |
#endif
0;
__be32 lcrr_val =
#ifdef CONFIG_SYS_LCRR_DBYP /* PLL bypass */
CONFIG_SYS_LCRR_DBYP |
#endif
#ifdef CONFIG_SYS_LCRR_EADC
CONFIG_SYS_LCRR_EADC |
#endif
#ifdef CONFIG_SYS_LCRR_CLKDIV /* system clock divider */
CONFIG_SYS_LCRR_CLKDIV |
#endif
0;
/* LCRR - Clock Ratio Register (10.3.1.16)
* write, read, and isync per MPC8379ERM rev.1 CLKDEV field description
*/
clrsetbits_be32(&im->lbus.lcrr, lcrr_mask, lcrr_val);
__raw_readl(&im->lbus.lcrr);
isync();
#ifdef CONFIG_QE
qe_init(qe_base);
qe_reset();
#endif
return 0;
}
/*
* Print out the bus arbiter event
*/
#if defined(CONFIG_DISPLAY_AER_FULL)
static int print_83xx_arb_event(int force)
{
static char* event[] = {
"Address Time Out",
"Data Time Out",
"Address Only Transfer Type",
"External Control Word Transfer Type",
"Reserved Transfer Type",
"Transfer Error",
"reserved",
"reserved"
};
static char* master[] = {
"e300 Core Data Transaction",
"reserved",
"e300 Core Instruction Fetch",
"reserved",
"TSEC1",
"TSEC2",
"USB MPH",
"USB DR",
"Encryption Core",
"I2C Boot Sequencer",
"JTAG",
"reserved",
"eSDHC",
"PCI1",
"PCI2",
"DMA",
"QUICC Engine 00",
"QUICC Engine 01",
"QUICC Engine 10",
"QUICC Engine 11",
"reserved",
"reserved",
"reserved",
"reserved",
"SATA1",
"SATA2",
"SATA3",
"SATA4",
"reserved",
"PCI Express 1",
"PCI Express 2",
"TDM-DMAC"
};
static char *transfer[] = {
"Address-only, Clean Block",
"Address-only, lwarx reservation set",
"Single-beat or Burst write",
"reserved",
"Address-only, Flush Block",
"reserved",
"Burst write",
"reserved",
"Address-only, sync",
"Address-only, tlbsync",
"Single-beat or Burst read",
"Single-beat or Burst read",
"Address-only, Kill Block",
"Address-only, icbi",
"Burst read",
"reserved",
"Address-only, eieio",
"reserved",
"Single-beat write",
"reserved",
"ecowx - Illegal single-beat write",
"reserved",
"reserved",
"reserved",
"Address-only, TLB Invalidate",
"reserved",
"Single-beat or Burst read",
"reserved",
"eciwx - Illegal single-beat read",
"reserved",
"Burst read",
"reserved"
};
int etype = (gd->arbiter_event_attributes & AEATR_EVENT)
>> AEATR_EVENT_SHIFT;
int mstr_id = (gd->arbiter_event_attributes & AEATR_MSTR_ID)
>> AEATR_MSTR_ID_SHIFT;
int tbst = (gd->arbiter_event_attributes & AEATR_TBST)
>> AEATR_TBST_SHIFT;
int tsize = (gd->arbiter_event_attributes & AEATR_TSIZE)
>> AEATR_TSIZE_SHIFT;
int ttype = (gd->arbiter_event_attributes & AEATR_TTYPE)
>> AEATR_TTYPE_SHIFT;
if (!force && !gd->arbiter_event_address)
return 0;
puts("Arbiter Event Status:\n");
printf(" Event Address: 0x%08lX\n", gd->arbiter_event_address);
printf(" Event Type: 0x%1x = %s\n", etype, event[etype]);
printf(" Master ID: 0x%02x = %s\n", mstr_id, master[mstr_id]);
printf(" Transfer Size: 0x%1x = %d bytes\n", (tbst<<3) | tsize,
tbst ? (tsize ? tsize : 8) : 16 + 8 * tsize);
printf(" Transfer Type: 0x%02x = %s\n", ttype, transfer[ttype]);
return gd->arbiter_event_address;
}
#elif defined(CONFIG_DISPLAY_AER_BRIEF)
static int print_83xx_arb_event(int force)
{
if (!force && !gd->arbiter_event_address)
return 0;
printf("Arbiter Event Status: AEATR=0x%08lX, AEADR=0x%08lX\n",
gd->arbiter_event_attributes, gd->arbiter_event_address);
return gd->arbiter_event_address;
}
#endif /* CONFIG_DISPLAY_AER_xxxx */
/*
* Figure out the cause of the reset
*/
int prt_83xx_rsr(void)
{
static struct {
ulong mask;
char *desc;
} bits[] = {
{
RSR_SWSR, "Software Soft"}, {
RSR_SWHR, "Software Hard"}, {
RSR_JSRS, "JTAG Soft"}, {
RSR_CSHR, "Check Stop"}, {
RSR_SWRS, "Software Watchdog"}, {
RSR_BMRS, "Bus Monitor"}, {
RSR_SRS, "External/Internal Soft"}, {
RSR_HRS, "External/Internal Hard"}
};
static int n = sizeof bits / sizeof bits[0];
ulong rsr = gd->reset_status;
int i;
char *sep;
puts("Reset Status:");
sep = " ";
for (i = 0; i < n; i++)
if (rsr & bits[i].mask) {
printf("%s%s", sep, bits[i].desc);
sep = ", ";
}
puts("\n");
#if defined(CONFIG_DISPLAY_AER_FULL) || defined(CONFIG_DISPLAY_AER_BRIEF)
print_83xx_arb_event(rsr & RSR_BMRS);
#endif
puts("\n");
return 0;
}
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