cpu/mpc85xx/cpu_init.c - u-boot - Git at Google

 /*
  * Copyright 2007 Freescale Semiconductor.
  *
  * (C) Copyright 2003 Motorola Inc.
  * Modified by Xianghua Xiao, X.Xiao@motorola.com
  *
  * (C) Copyright 2000
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * 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 <watchdog.h>
 #include <asm/processor.h>
 #include <ioports.h>
 #include <asm/io.h>
 #include <asm/mmu.h>
 #include <asm/fsl_law.h>
 #include "mp.h"

 DECLARE_GLOBAL_DATA_PTR;

 #ifdef CONFIG_MPC8536
 extern void fsl_serdes_init(void);
 #endif

 #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

 #ifdef CONFIG_CPM2
 void config_8560_ioports (volatile ccsr_cpm_t * cpm)
 {
 	int portnum;

 	for (portnum = 0; portnum < 4; portnum++) {
 		uint pmsk = 0,
 		     ppar = 0,
 		     psor = 0,
 		     pdir = 0,
 		     podr = 0,
 		     pdat = 0;
 		iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0];
 		iop_conf_t *eiopc = iopc + 32;
 		uint msk = 1;

 		/*
 		 * NOTE:
 		 * index 0 refers to pin 31,
 		 * index 31 refers to pin 0
 		 */
 		while (iopc < eiopc) {
 			if (iopc->conf) {
 				pmsk |= msk;
 				if (iopc->ppar)
 					ppar |= msk;
 				if (iopc->psor)
 					psor |= msk;
 				if (iopc->pdir)
 					pdir |= msk;
 				if (iopc->podr)
 					podr |= msk;
 				if (iopc->pdat)
 					pdat |= msk;
 			}

 			msk <<= 1;
 			iopc++;
 		}

 		if (pmsk != 0) {
 			volatile ioport_t *iop = ioport_addr (cpm, portnum);
 			uint tpmsk = ~pmsk;

 			/*
 			 * the (somewhat confused) paragraph at the
 			 * bottom of page 35-5 warns that there might
 			 * be "unknown behaviour" when programming
 			 * PSORx and PDIRx, if PPARx = 1, so I
 			 * decided this meant I had to disable the
 			 * dedicated function first, and enable it
 			 * last.
 			 */
 			iop->ppar &= tpmsk;
 			iop->psor = (iop->psor & tpmsk) | psor;
 			iop->podr = (iop->podr & tpmsk) | podr;
 			iop->pdat = (iop->pdat & tpmsk) | pdat;
 			iop->pdir = (iop->pdir & tpmsk) | pdir;
 			iop->ppar |= ppar;
 		}
 	}
 }
 #endif

 /* We run cpu_init_early_f in AS = 1 */
 void cpu_init_early_f(void)
 {
 	set_tlb(0, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		1, 0, BOOKE_PAGESZ_4K, 0);

 	/* set up CCSR if we want it moved */
 #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
 	{
 		u32 temp;

 		set_tlb(0, CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_DEFAULT,
 			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 			1, 1, BOOKE_PAGESZ_4K, 0);

 		temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT);
 		out_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_PHYS >> 12);

 		temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR);
 	}
 #endif

 	/* 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));

 	init_laws();
 	invalidate_tlb(0);
 	init_tlbs();
 }

 /*
  * Breathe some life into the CPU...
  *
  * Set up the memory map
  * initialize a bunch of registers
  */

 void cpu_init_f (void)
 {
 	volatile ccsr_lbc_t *memctl = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
 	extern void m8560_cpm_reset (void);

 	disable_tlb(14);
 	disable_tlb(15);

 #ifdef CONFIG_CPM2
 	config_8560_ioports((ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR);
 #endif

 	/* 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_OR0_REMAP)
 	memctl->or0 = CONFIG_SYS_OR0_REMAP;
 #endif
 #if defined(CONFIG_SYS_OR1_REMAP)
 	memctl->or1 = CONFIG_SYS_OR1_REMAP;
 #endif

 	/* now restrict to preliminary range */
 	/* if cs1 is already set via debugger, leave cs0/cs1 alone */
 	if (! memctl->br1 & 1) {
 #if defined(CONFIG_SYS_BR0_PRELIM) && defined(CONFIG_SYS_OR0_PRELIM)
 		memctl->br0 = CONFIG_SYS_BR0_PRELIM;
 		memctl->or0 = CONFIG_SYS_OR0_PRELIM;
 #endif

 #if defined(CONFIG_SYS_BR1_PRELIM) && defined(CONFIG_SYS_OR1_PRELIM)
 		memctl->or1 = CONFIG_SYS_OR1_PRELIM;
 		memctl->br1 = CONFIG_SYS_BR1_PRELIM;
 #endif
 	}

 #if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM)
 	memctl->or2 = CONFIG_SYS_OR2_PRELIM;
 	memctl->br2 = CONFIG_SYS_BR2_PRELIM;
 #endif

 #if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
 	memctl->or3 = CONFIG_SYS_OR3_PRELIM;
 	memctl->br3 = CONFIG_SYS_BR3_PRELIM;
 #endif

 #if defined(CONFIG_SYS_BR4_PRELIM) && defined(CONFIG_SYS_OR4_PRELIM)
 	memctl->or4 = CONFIG_SYS_OR4_PRELIM;
 	memctl->br4 = CONFIG_SYS_BR4_PRELIM;
 #endif

 #if defined(CONFIG_SYS_BR5_PRELIM) && defined(CONFIG_SYS_OR5_PRELIM)
 	memctl->or5 = CONFIG_SYS_OR5_PRELIM;
 	memctl->br5 = CONFIG_SYS_BR5_PRELIM;
 #endif

 #if defined(CONFIG_SYS_BR6_PRELIM) && defined(CONFIG_SYS_OR6_PRELIM)
 	memctl->or6 = CONFIG_SYS_OR6_PRELIM;
 	memctl->br6 = CONFIG_SYS_BR6_PRELIM;
 #endif

 #if defined(CONFIG_SYS_BR7_PRELIM) && defined(CONFIG_SYS_OR7_PRELIM)
 	memctl->or7 = CONFIG_SYS_OR7_PRELIM;
 	memctl->br7 = CONFIG_SYS_BR7_PRELIM;
 #endif

 #if defined(CONFIG_CPM2)
 	m8560_cpm_reset();
 #endif
 #ifdef CONFIG_QE
 	/* Config QE ioports */
 	config_qe_ioports();
 #endif
 #if defined(CONFIG_MPC8536)
 	fsl_serdes_init();
 #endif

 }


 /*
  * Initialize L2 as cache.
  *
  * The newer 8548, etc, parts have twice as much cache, but
  * use the same bit-encoding as the older 8555, etc, parts.
  *
  */

 int cpu_init_r(void)
 {
 	puts ("L2:    ");

 #if defined(CONFIG_L2_CACHE)
 	volatile ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
 	volatile uint cache_ctl;
 	uint svr, ver;
 	uint l2srbar;
 	u32 l2siz_field;

 	svr = get_svr();
 	ver = SVR_SOC_VER(svr);

 	asm("msync;isync");
 	cache_ctl = l2cache->l2ctl;
 	l2siz_field = (cache_ctl >> 28) & 0x3;

 	switch (l2siz_field) {
 	case 0x0:
 		printf(" unknown size (0x%08x)\n", cache_ctl);
 		return -1;
 		break;
 	case 0x1:
 		if (ver == SVR_8540 || ver == SVR_8560   ||
 		    ver == SVR_8541 || ver == SVR_8541_E ||
 		    ver == SVR_8555 || ver == SVR_8555_E) {
 			puts("128 KB ");
 			/* set L2E=1, L2I=1, & L2BLKSZ=1 (128 Kbyte) */
 			cache_ctl = 0xc4000000;
 		} else {
 			puts("256 KB ");
 			cache_ctl = 0xc0000000; /* set L2E=1, L2I=1, & L2SRAM=0 */
 		}
 		break;
 	case 0x2:
 		if (ver == SVR_8540 || ver == SVR_8560   ||
 		    ver == SVR_8541 || ver == SVR_8541_E ||
 		    ver == SVR_8555 || ver == SVR_8555_E) {
 			puts("256 KB ");
 			/* set L2E=1, L2I=1, & L2BLKSZ=2 (256 Kbyte) */
 			cache_ctl = 0xc8000000;
 		} else {
 			puts ("512 KB ");
 			/* set L2E=1, L2I=1, & L2SRAM=0 */
 			cache_ctl = 0xc0000000;
 		}
 		break;
 	case 0x3:
 		puts("1024 KB ");
 		/* set L2E=1, L2I=1, & L2SRAM=0 */
 		cache_ctl = 0xc0000000;
 		break;
 	}

 	if (l2cache->l2ctl & 0x80000000) {
 		puts("already enabled");
 		l2srbar = l2cache->l2srbar0;
 #ifdef CONFIG_SYS_INIT_L2_ADDR
 		if (l2cache->l2ctl & 0x00010000 && l2srbar >= CONFIG_SYS_FLASH_BASE) {
 			l2srbar = CONFIG_SYS_INIT_L2_ADDR;
 			l2cache->l2srbar0 = l2srbar;
 			printf("moving to 0x%08x", CONFIG_SYS_INIT_L2_ADDR);
 		}
 #endif /* CONFIG_SYS_INIT_L2_ADDR */
 		puts("\n");
 	} else {
 		asm("msync;isync");
 		l2cache->l2ctl = cache_ctl; /* invalidate & enable */
 		asm("msync;isync");
 		puts("enabled\n");
 	}
 #else
 	puts("disabled\n");
 #endif
 #ifdef CONFIG_QE
 	uint qe_base = CONFIG_SYS_IMMR + 0x00080000; /* QE immr base */
 	qe_init(qe_base);
 	qe_reset();
 #endif

 #if defined(CONFIG_MP)
 	setup_mp();
 #endif
 	return 0;
 }
	/*
	* Copyright 2007 Freescale Semiconductor.
	*
	* (C) Copyright 2003 Motorola Inc.
	* Modified by Xianghua Xiao, X.Xiao@motorola.com
	*
	* (C) Copyright 2000
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* 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 <watchdog.h>
	#include <asm/processor.h>
	#include <ioports.h>
	#include <asm/io.h>
	#include <asm/mmu.h>
	#include <asm/fsl_law.h>
	#include "mp.h"

	DECLARE_GLOBAL_DATA_PTR;

	#ifdef CONFIG_MPC8536
	extern void fsl_serdes_init(void);
	#endif

	#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

	#ifdef CONFIG_CPM2
	void config_8560_ioports (volatile ccsr_cpm_t * cpm)
	{
	int portnum;

	for (portnum = 0; portnum < 4; portnum++) {
	uint pmsk = 0,
	ppar = 0,
	psor = 0,
	pdir = 0,
	podr = 0,
	pdat = 0;
	iop_conf_t iopc = (iop_conf_t ) & iop_conf_tab[portnum][0];
	iop_conf_t *eiopc = iopc + 32;
	uint msk = 1;

	/*
	* NOTE:
	* index 0 refers to pin 31,
	* index 31 refers to pin 0
	*/
	while (iopc < eiopc) {
	if (iopc->conf) {
	pmsk \|= msk;
	if (iopc->ppar)
	ppar \|= msk;
	if (iopc->psor)
	psor \|= msk;
	if (iopc->pdir)
	pdir \|= msk;
	if (iopc->podr)
	podr \|= msk;
	if (iopc->pdat)
	pdat \|= msk;
	}

	msk <<= 1;
	iopc++;
	}

	if (pmsk != 0) {
	volatile ioport_t *iop = ioport_addr (cpm, portnum);
	uint tpmsk = ~pmsk;

	/*
	* the (somewhat confused) paragraph at the
	* bottom of page 35-5 warns that there might
	* be "unknown behaviour" when programming
	* PSORx and PDIRx, if PPARx = 1, so I
	* decided this meant I had to disable the
	* dedicated function first, and enable it
	* last.
	*/
	iop->ppar &= tpmsk;
	iop->psor = (iop->psor & tpmsk) \| psor;
	iop->podr = (iop->podr & tpmsk) \| podr;
	iop->pdat = (iop->pdat & tpmsk) \| pdat;
	iop->pdir = (iop->pdir & tpmsk) \| pdir;
	iop->ppar \|= ppar;
	}
	}
	}
	#endif

	/* We run cpu_init_early_f in AS = 1 */
	void cpu_init_early_f(void)
	{
	set_tlb(0, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
	MAS3_SX\|MAS3_SW\|MAS3_SR, MAS2_I\|MAS2_G,
	1, 0, BOOKE_PAGESZ_4K, 0);

	/* set up CCSR if we want it moved */
	#if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS)
	{
	u32 temp;

	set_tlb(0, CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_DEFAULT,
	MAS3_SX\|MAS3_SW\|MAS3_SR, MAS2_I\|MAS2_G,
	1, 1, BOOKE_PAGESZ_4K, 0);

	temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT);
	out_be32((volatile u32 *)CONFIG_SYS_CCSRBAR_DEFAULT, CONFIG_SYS_CCSRBAR_PHYS >> 12);

	temp = in_be32((volatile u32 *)CONFIG_SYS_CCSRBAR);
	}
	#endif

	/* 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));

	init_laws();
	invalidate_tlb(0);
	init_tlbs();
	}

	/*
	* Breathe some life into the CPU...
	*
	* Set up the memory map
	* initialize a bunch of registers
	*/

	void cpu_init_f (void)
	{
	volatile ccsr_lbc_t memctl = (void )(CONFIG_SYS_MPC85xx_LBC_ADDR);
	extern void m8560_cpm_reset (void);

	disable_tlb(14);
	disable_tlb(15);

	#ifdef CONFIG_CPM2
	config_8560_ioports((ccsr_cpm_t *)CONFIG_SYS_MPC85xx_CPM_ADDR);
	#endif

	/* 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_OR0_REMAP)
	memctl->or0 = CONFIG_SYS_OR0_REMAP;
	#endif
	#if defined(CONFIG_SYS_OR1_REMAP)
	memctl->or1 = CONFIG_SYS_OR1_REMAP;
	#endif

	/* now restrict to preliminary range */
	/* if cs1 is already set via debugger, leave cs0/cs1 alone */
	if (! memctl->br1 & 1) {
	#if defined(CONFIG_SYS_BR0_PRELIM) && defined(CONFIG_SYS_OR0_PRELIM)
	memctl->br0 = CONFIG_SYS_BR0_PRELIM;
	memctl->or0 = CONFIG_SYS_OR0_PRELIM;
	#endif

	#if defined(CONFIG_SYS_BR1_PRELIM) && defined(CONFIG_SYS_OR1_PRELIM)
	memctl->or1 = CONFIG_SYS_OR1_PRELIM;
	memctl->br1 = CONFIG_SYS_BR1_PRELIM;
	#endif
	}

	#if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM)
	memctl->or2 = CONFIG_SYS_OR2_PRELIM;
	memctl->br2 = CONFIG_SYS_BR2_PRELIM;
	#endif

	#if defined(CONFIG_SYS_BR3_PRELIM) && defined(CONFIG_SYS_OR3_PRELIM)
	memctl->or3 = CONFIG_SYS_OR3_PRELIM;
	memctl->br3 = CONFIG_SYS_BR3_PRELIM;
	#endif

	#if defined(CONFIG_SYS_BR4_PRELIM) && defined(CONFIG_SYS_OR4_PRELIM)
	memctl->or4 = CONFIG_SYS_OR4_PRELIM;
	memctl->br4 = CONFIG_SYS_BR4_PRELIM;
	#endif

	#if defined(CONFIG_SYS_BR5_PRELIM) && defined(CONFIG_SYS_OR5_PRELIM)
	memctl->or5 = CONFIG_SYS_OR5_PRELIM;
	memctl->br5 = CONFIG_SYS_BR5_PRELIM;
	#endif

	#if defined(CONFIG_SYS_BR6_PRELIM) && defined(CONFIG_SYS_OR6_PRELIM)
	memctl->or6 = CONFIG_SYS_OR6_PRELIM;
	memctl->br6 = CONFIG_SYS_BR6_PRELIM;
	#endif

	#if defined(CONFIG_SYS_BR7_PRELIM) && defined(CONFIG_SYS_OR7_PRELIM)
	memctl->or7 = CONFIG_SYS_OR7_PRELIM;
	memctl->br7 = CONFIG_SYS_BR7_PRELIM;
	#endif

	#if defined(CONFIG_CPM2)
	m8560_cpm_reset();
	#endif
	#ifdef CONFIG_QE
	/* Config QE ioports */
	config_qe_ioports();
	#endif
	#if defined(CONFIG_MPC8536)
	fsl_serdes_init();
	#endif

	}


	/*
	* Initialize L2 as cache.
	*
	* The newer 8548, etc, parts have twice as much cache, but
	* use the same bit-encoding as the older 8555, etc, parts.
	*
	*/

	int cpu_init_r(void)
	{
	puts ("L2: ");

	#if defined(CONFIG_L2_CACHE)
	volatile ccsr_l2cache_t l2cache = (void )CONFIG_SYS_MPC85xx_L2_ADDR;
	volatile uint cache_ctl;
	uint svr, ver;
	uint l2srbar;
	u32 l2siz_field;

	svr = get_svr();
	ver = SVR_SOC_VER(svr);

	asm("msync;isync");
	cache_ctl = l2cache->l2ctl;
	l2siz_field = (cache_ctl >> 28) & 0x3;

	switch (l2siz_field) {
	case 0x0:
	printf(" unknown size (0x%08x)\n", cache_ctl);
	return -1;
	break;
	case 0x1:
	if (ver == SVR_8540 \|\| ver == SVR_8560 \|\|
	ver == SVR_8541 \|\| ver == SVR_8541_E \|\|
	ver == SVR_8555 \|\| ver == SVR_8555_E) {
	puts("128 KB ");
	/* set L2E=1, L2I=1, & L2BLKSZ=1 (128 Kbyte) */
	cache_ctl = 0xc4000000;
	} else {
	puts("256 KB ");
	cache_ctl = 0xc0000000; /* set L2E=1, L2I=1, & L2SRAM=0 */
	}
	break;
	case 0x2:
	if (ver == SVR_8540 \|\| ver == SVR_8560 \|\|
	ver == SVR_8541 \|\| ver == SVR_8541_E \|\|
	ver == SVR_8555 \|\| ver == SVR_8555_E) {
	puts("256 KB ");
	/* set L2E=1, L2I=1, & L2BLKSZ=2 (256 Kbyte) */
	cache_ctl = 0xc8000000;
	} else {
	puts ("512 KB ");
	/* set L2E=1, L2I=1, & L2SRAM=0 */
	cache_ctl = 0xc0000000;
	}
	break;
	case 0x3:
	puts("1024 KB ");
	/* set L2E=1, L2I=1, & L2SRAM=0 */
	cache_ctl = 0xc0000000;
	break;
	}

	if (l2cache->l2ctl & 0x80000000) {
	puts("already enabled");
	l2srbar = l2cache->l2srbar0;
	#ifdef CONFIG_SYS_INIT_L2_ADDR
	if (l2cache->l2ctl & 0x00010000 && l2srbar >= CONFIG_SYS_FLASH_BASE) {
	l2srbar = CONFIG_SYS_INIT_L2_ADDR;
	l2cache->l2srbar0 = l2srbar;
	printf("moving to 0x%08x", CONFIG_SYS_INIT_L2_ADDR);
	}
	#endif /* CONFIG_SYS_INIT_L2_ADDR */
	puts("\n");
	} else {
	asm("msync;isync");
	l2cache->l2ctl = cache_ctl; /* invalidate & enable */
	asm("msync;isync");
	puts("enabled\n");
	}
	#else
	puts("disabled\n");
	#endif
	#ifdef CONFIG_QE
	uint qe_base = CONFIG_SYS_IMMR + 0x00080000; /* QE immr base */
	qe_init(qe_base);
	qe_reset();
	#endif

	#if defined(CONFIG_MP)
	setup_mp();
	#endif
	return 0;
	}