cpu/mpc85xx/cpu.c - platform/external/u-boot - Gitiles

 /*
  * Copyright 2004,2007 Freescale Semiconductor, Inc.
  * (C) Copyright 2002, 2003 Motorola Inc.
  * 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 <command.h>
 #include <asm/cache.h>

 #if defined(CONFIG_OF_FLAT_TREE)
 #include <ft_build.h>
 #endif


 int checkcpu (void)
 {
 	sys_info_t sysinfo;
 	uint lcrr;		/* local bus clock ratio register */
 	uint clkdiv;		/* clock divider portion of lcrr */
 	uint pvr, svr;
 	uint fam;
 	uint ver;
 	uint major, minor;

 	svr = get_svr();
 	ver = SVR_VER(svr);
 	major = SVR_MAJ(svr);
 	minor = SVR_MIN(svr);

 	puts("CPU:   ");
 	switch (ver) {
 	case SVR_8540:
 		puts("8540");
 		break;
 	case SVR_8541:
 		puts("8541");
 		break;
 	case SVR_8555:
 		puts("8555");
 		break;
 	case SVR_8560:
 		puts("8560");
 		break;
 	case SVR_8548:
 		puts("8548");
 		break;
 	case SVR_8548_E:
 		puts("8548_E");
 		break;
 	case SVR_8544:
 		puts("8544");
 		break;
 	case SVR_8544_E:
 		puts("8544_E");
 		break;
 	case SVR_8568_E:
 		puts("8568_E");
 		break;
 	default:
 		puts("Unknown");
 		break;
 	}
 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);

 	pvr = get_pvr();
 	fam = PVR_FAM(pvr);
 	ver = PVR_VER(pvr);
 	major = PVR_MAJ(pvr);
 	minor = PVR_MIN(pvr);

 	printf("Core:  ");
 	switch (fam) {
 	case PVR_FAM(PVR_85xx):
 	    puts("E500");
 	    break;
 	default:
 	    puts("Unknown");
 	    break;
 	}
 	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);

 	get_sys_info(&sysinfo);

 	puts("Clock Configuration:\n");
 	printf("       CPU:%4lu MHz, ", sysinfo.freqProcessor / 1000000);
 	printf("CCB:%4lu MHz,\n", sysinfo.freqSystemBus / 1000000);
 	printf("       DDR:%4lu MHz, ", sysinfo.freqSystemBus / 2000000);

 #if defined(CFG_LBC_LCRR)
 	lcrr = CFG_LBC_LCRR;
 #else
 	{
 	    volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	    volatile ccsr_lbc_t *lbc= &immap->im_lbc;

 	    lcrr = lbc->lcrr;
 	}
 #endif
 	clkdiv = lcrr & 0x0f;
 	if (clkdiv == 2 || clkdiv == 4 || clkdiv == 8) {
 #if defined(CONFIG_MPC8548) || defined(CONFIG_MPC8544)
 		/*
 		 * Yes, the entire PQ38 family use the same
 		 * bit-representation for twice the clock divider values.
 		 */
 		 clkdiv *= 2;
 #endif
 		printf("LBC:%4lu MHz\n",
 		       sysinfo.freqSystemBus / 1000000 / clkdiv);
 	} else {
 		printf("LBC: unknown (lcrr: 0x%08x)\n", lcrr);
 	}

 	if (ver == SVR_8560) {
 		printf("CPM:  %lu Mhz\n",
 		       sysinfo.freqSystemBus / 1000000);
 	}

 	puts("L1:    D-cache 32 kB enabled\n       I-cache 32 kB enabled\n");

 	return 0;
 }


 /* ------------------------------------------------------------------------- */

 int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
 {
 	uint pvr;
 	uint ver;
 	pvr = get_pvr();
 	ver = PVR_VER(pvr);
 	if (ver & 1){
 	/* e500 v2 core has reset control register */
 		volatile unsigned int * rstcr;
 		rstcr = (volatile unsigned int *)(CFG_IMMR + 0xE00B0);
 		*rstcr = 0x2;		/* HRESET_REQ */
 	}else{
 	/*
 	 * Initiate hard reset in debug control register DBCR0
 	 * Make sure MSR[DE] = 1
 	 */
 		unsigned long val;
 		val = mfspr(DBCR0);
 		val |= 0x70000000;
 		mtspr(DBCR0,val);
 	}
 	return 1;
 }


 /*
  * Get timebase clock frequency
  */
 unsigned long get_tbclk (void)
 {

 	sys_info_t  sys_info;

 	get_sys_info(&sys_info);
 	return ((sys_info.freqSystemBus + 7L) / 8L);
 }


 #if defined(CONFIG_WATCHDOG)
 void
 watchdog_reset(void)
 {
 	int re_enable = disable_interrupts();
 	reset_85xx_watchdog();
 	if (re_enable) enable_interrupts();
 }

 void
 reset_85xx_watchdog(void)
 {
 	/*
 	 * Clear TSR(WIS) bit by writing 1
 	 */
 	unsigned long val;
 	val = mfspr(SPRN_TSR);
 	val |= TSR_WIS;
 	mtspr(SPRN_TSR, val);
 }
 #endif	/* CONFIG_WATCHDOG */

 #if defined(CONFIG_DDR_ECC)
 void dma_init(void) {
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_dma_t *dma = &immap->im_dma;

 	dma->satr0 = 0x02c40000;
 	dma->datr0 = 0x02c40000;
 	dma->sr0 = 0xfffffff; /* clear any errors */
 	asm("sync; isync; msync");
 	return;
 }

 uint dma_check(void) {
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_dma_t *dma = &immap->im_dma;
 	volatile uint status = dma->sr0;

 	/* While the channel is busy, spin */
 	while((status & 4) == 4) {
 		status = dma->sr0;
 	}

 	/* clear MR0[CS] channel start bit */
 	dma->mr0 &= 0x00000001;
 	asm("sync;isync;msync");

 	if (status != 0) {
 		printf ("DMA Error: status = %x\n", status);
 	}
 	return status;
 }

 int dma_xfer(void *dest, uint count, void *src) {
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_dma_t *dma = &immap->im_dma;

 	dma->dar0 = (uint) dest;
 	dma->sar0 = (uint) src;
 	dma->bcr0 = count;
 	dma->mr0 = 0xf000004;
 	asm("sync;isync;msync");
 	dma->mr0 = 0xf000005;
 	asm("sync;isync;msync");
 	return dma_check();
 }
 #endif


 #ifdef CONFIG_OF_FLAT_TREE
 void
 ft_cpu_setup(void *blob, bd_t *bd)
 {
 	u32 *p;
 	ulong clock;
 	int len;

 	clock = bd->bi_busfreq;
 	p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
 	if (p != NULL)
 		*p = cpu_to_be32(clock);

 	p = ft_get_prop(blob, "/qe@e0080000/" OF_CPU "/bus-frequency", &len);
 	if (p != NULL)
 		*p = cpu_to_be32(clock);

 	p = ft_get_prop(blob, "/" OF_SOC "/serial@4500/clock-frequency", &len);
 	if (p != NULL)
 		*p = cpu_to_be32(clock);

 	p = ft_get_prop(blob, "/" OF_SOC "/serial@4600/clock-frequency", &len);
 	if (p != NULL)
 		*p = cpu_to_be32(clock);

 #if defined(CONFIG_MPC85XX_TSEC1)
 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enetaddr, 6);

 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/local-mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enetaddr, 6);
 #endif

 #if defined(CONFIG_HAS_ETH1)
 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enet1addr, 6);

 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/local-mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enet1addr, 6);
 #endif

 #if defined(CONFIG_HAS_ETH2)
 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@26000/mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enet2addr, 6);

 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@26000/local-mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enet2addr, 6);
 #endif

 #if defined(CONFIG_HAS_ETH3)
 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@27000/mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enet3addr, 6);

 	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@27000/local-mac-address", &len);
 	if (p)
 		memcpy(p, bd->bi_enet3addr, 6);
 #endif

 }
 #endif
	/*
	* Copyright 2004,2007 Freescale Semiconductor, Inc.
	* (C) Copyright 2002, 2003 Motorola Inc.
	* 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 <command.h>
	#include <asm/cache.h>

	#if defined(CONFIG_OF_FLAT_TREE)
	#include <ft_build.h>
	#endif


	int checkcpu (void)
	{
	sys_info_t sysinfo;
	uint lcrr; /* local bus clock ratio register */
	uint clkdiv; /* clock divider portion of lcrr */
	uint pvr, svr;
	uint fam;
	uint ver;
	uint major, minor;

	svr = get_svr();
	ver = SVR_VER(svr);
	major = SVR_MAJ(svr);
	minor = SVR_MIN(svr);

	puts("CPU: ");
	switch (ver) {
	case SVR_8540:
	puts("8540");
	break;
	case SVR_8541:
	puts("8541");
	break;
	case SVR_8555:
	puts("8555");
	break;
	case SVR_8560:
	puts("8560");
	break;
	case SVR_8548:
	puts("8548");
	break;
	case SVR_8548_E:
	puts("8548_E");
	break;
	case SVR_8544:
	puts("8544");
	break;
	case SVR_8544_E:
	puts("8544_E");
	break;
	case SVR_8568_E:
	puts("8568_E");
	break;
	default:
	puts("Unknown");
	break;
	}
	printf(", Version: %d.%d, (0x%08x)\n", major, minor, svr);

	pvr = get_pvr();
	fam = PVR_FAM(pvr);
	ver = PVR_VER(pvr);
	major = PVR_MAJ(pvr);
	minor = PVR_MIN(pvr);

	printf("Core: ");
	switch (fam) {
	case PVR_FAM(PVR_85xx):
	puts("E500");
	break;
	default:
	puts("Unknown");
	break;
	}
	printf(", Version: %d.%d, (0x%08x)\n", major, minor, pvr);

	get_sys_info(&sysinfo);

	puts("Clock Configuration:\n");
	printf(" CPU:%4lu MHz, ", sysinfo.freqProcessor / 1000000);
	printf("CCB:%4lu MHz,\n", sysinfo.freqSystemBus / 1000000);
	printf(" DDR:%4lu MHz, ", sysinfo.freqSystemBus / 2000000);

	#if defined(CFG_LBC_LCRR)
	lcrr = CFG_LBC_LCRR;
	#else
	{
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_lbc_t *lbc= &immap->im_lbc;

	lcrr = lbc->lcrr;
	}
	#endif
	clkdiv = lcrr & 0x0f;
	if (clkdiv == 2 \|\| clkdiv == 4 \|\| clkdiv == 8) {
	#if defined(CONFIG_MPC8548) \|\| defined(CONFIG_MPC8544)
	/*
	* Yes, the entire PQ38 family use the same
	* bit-representation for twice the clock divider values.
	*/
	clkdiv *= 2;
	#endif
	printf("LBC:%4lu MHz\n",
	sysinfo.freqSystemBus / 1000000 / clkdiv);
	} else {
	printf("LBC: unknown (lcrr: 0x%08x)\n", lcrr);
	}

	if (ver == SVR_8560) {
	printf("CPM: %lu Mhz\n",
	sysinfo.freqSystemBus / 1000000);
	}

	puts("L1: D-cache 32 kB enabled\n I-cache 32 kB enabled\n");

	return 0;
	}


	/* ------------------------------------------------------------------------- */

	int do_reset (cmd_tbl_t cmdtp, bd_t bd, int flag, int argc, char *argv[])
	{
	uint pvr;
	uint ver;
	pvr = get_pvr();
	ver = PVR_VER(pvr);
	if (ver & 1){
	/* e500 v2 core has reset control register */
	volatile unsigned int * rstcr;
	rstcr = (volatile unsigned int *)(CFG_IMMR + 0xE00B0);
	rstcr = 0x2; / HRESET_REQ */
	}else{
	/*
	* Initiate hard reset in debug control register DBCR0
	* Make sure MSR[DE] = 1
	*/
	unsigned long val;
	val = mfspr(DBCR0);
	val \|= 0x70000000;
	mtspr(DBCR0,val);
	}
	return 1;
	}


	/*
	* Get timebase clock frequency
	*/
	unsigned long get_tbclk (void)
	{

	sys_info_t sys_info;

	get_sys_info(&sys_info);
	return ((sys_info.freqSystemBus + 7L) / 8L);
	}


	#if defined(CONFIG_WATCHDOG)
	void
	watchdog_reset(void)
	{
	int re_enable = disable_interrupts();
	reset_85xx_watchdog();
	if (re_enable) enable_interrupts();
	}

	void
	reset_85xx_watchdog(void)
	{
	/*
	* Clear TSR(WIS) bit by writing 1
	*/
	unsigned long val;
	val = mfspr(SPRN_TSR);
	val \|= TSR_WIS;
	mtspr(SPRN_TSR, val);
	}
	#endif /* CONFIG_WATCHDOG */

	#if defined(CONFIG_DDR_ECC)
	void dma_init(void) {
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_dma_t *dma = &immap->im_dma;

	dma->satr0 = 0x02c40000;
	dma->datr0 = 0x02c40000;
	dma->sr0 = 0xfffffff; /* clear any errors */
	asm("sync; isync; msync");
	return;
	}

	uint dma_check(void) {
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_dma_t *dma = &immap->im_dma;
	volatile uint status = dma->sr0;

	/* While the channel is busy, spin */
	while((status & 4) == 4) {
	status = dma->sr0;
	}

	/* clear MR0[CS] channel start bit */
	dma->mr0 &= 0x00000001;
	asm("sync;isync;msync");

	if (status != 0) {
	printf ("DMA Error: status = %x\n", status);
	}
	return status;
	}

	int dma_xfer(void dest, uint count, void src) {
	volatile immap_t immap = (immap_t )CFG_IMMR;
	volatile ccsr_dma_t *dma = &immap->im_dma;

	dma->dar0 = (uint) dest;
	dma->sar0 = (uint) src;
	dma->bcr0 = count;
	dma->mr0 = 0xf000004;
	asm("sync;isync;msync");
	dma->mr0 = 0xf000005;
	asm("sync;isync;msync");
	return dma_check();
	}
	#endif


	#ifdef CONFIG_OF_FLAT_TREE
	void
	ft_cpu_setup(void blob, bd_t bd)
	{
	u32 *p;
	ulong clock;
	int len;

	clock = bd->bi_busfreq;
	p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
	if (p != NULL)
	*p = cpu_to_be32(clock);

	p = ft_get_prop(blob, "/qe@e0080000/" OF_CPU "/bus-frequency", &len);
	if (p != NULL)
	*p = cpu_to_be32(clock);

	p = ft_get_prop(blob, "/" OF_SOC "/serial@4500/clock-frequency", &len);
	if (p != NULL)
	*p = cpu_to_be32(clock);

	p = ft_get_prop(blob, "/" OF_SOC "/serial@4600/clock-frequency", &len);
	if (p != NULL)
	*p = cpu_to_be32(clock);

	#if defined(CONFIG_MPC85XX_TSEC1)
	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enetaddr, 6);

	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/local-mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enetaddr, 6);
	#endif

	#if defined(CONFIG_HAS_ETH1)
	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enet1addr, 6);

	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/local-mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enet1addr, 6);
	#endif

	#if defined(CONFIG_HAS_ETH2)
	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@26000/mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enet2addr, 6);

	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@26000/local-mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enet2addr, 6);
	#endif

	#if defined(CONFIG_HAS_ETH3)
	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@27000/mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enet3addr, 6);

	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@27000/local-mac-address", &len);
	if (p)
	memcpy(p, bd->bi_enet3addr, 6);
	#endif

	}
	#endif