arch/arm/cpu/armv7/omap3/sys_info.c - uboot/armada - Git at Google

 /*
  * (C) Copyright 2008
  * Texas Instruments, <www.ti.com>
  *
  * Author :
  *      Manikandan Pillai <mani.pillai@ti.com>
  *
  * Derived from Beagle Board and 3430 SDP code by
  *      Richard Woodruff <r-woodruff2@ti.com>
  *      Syed Mohammed Khasim <khasim@ti.com>
  *
  * 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 <asm/io.h>
 #include <asm/arch/mem.h>	/* get mem tables */
 #include <asm/arch/sys_proto.h>
 #include <i2c.h>
 #include <linux/compiler.h>

 extern omap3_sysinfo sysinfo;
 static struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;

 #ifdef CONFIG_DISPLAY_CPUINFO
 static char *rev_s[CPU_3XX_MAX_REV] = {
 				"1.0",
 				"2.0",
 				"2.1",
 				"3.0",
 				"3.1",
 				"UNKNOWN",
 				"UNKNOWN",
 				"3.1.2"};

 /* this is the revision table for 37xx CPUs */
 static char *rev_s_37xx[CPU_37XX_MAX_REV] = {
 				"1.0",
 				"1.1",
 				"1.2"};
 #endif /* CONFIG_DISPLAY_CPUINFO */

 /*****************************************************************
  * dieid_num_r(void) - read and set die ID
  *****************************************************************/
 void dieid_num_r(void)
 {
 	struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
 	char *uid_s, die_id[34];
 	u32 id[4];

 	memset(die_id, 0, sizeof(die_id));

 	uid_s = getenv("dieid#");

 	if (uid_s == NULL) {
 		id[3] = readl(&id_base->die_id_0);
 		id[2] = readl(&id_base->die_id_1);
 		id[1] = readl(&id_base->die_id_2);
 		id[0] = readl(&id_base->die_id_3);
 		sprintf(die_id, "%08x%08x%08x%08x", id[0], id[1], id[2], id[3]);
 		setenv("dieid#", die_id);
 		uid_s = die_id;
 	}

 	printf("Die ID #%s\n", uid_s);
 }

 /******************************************
  * get_cpu_type(void) - extract cpu info
  ******************************************/
 u32 get_cpu_type(void)
 {
 	return readl(&ctrl_base->ctrl_omap_stat);
 }

 /******************************************
  * get_cpu_id(void) - extract cpu id
  * returns 0 for ES1.0, cpuid otherwise
  ******************************************/
 u32 get_cpu_id(void)
 {
 	struct ctrl_id *id_base;
 	u32 cpuid = 0;

 	/*
 	 * On ES1.0 the IDCODE register is not exposed on L4
 	 * so using CPU ID to differentiate between ES1.0 and > ES1.0.
 	 */
 	__asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
 	if ((cpuid & 0xf) == 0x0) {
 		return 0;
 	} else {
 		/* Decode the IDs on > ES1.0 */
 		id_base = (struct ctrl_id *) OMAP34XX_ID_L4_IO_BASE;

 		cpuid = readl(&id_base->idcode);
 	}

 	return cpuid;
 }

 /******************************************
  * get_cpu_family(void) - extract cpu info
  ******************************************/
 u32 get_cpu_family(void)
 {
 	u16 hawkeye;
 	u32 cpu_family;
 	u32 cpuid = get_cpu_id();

 	if (cpuid == 0)
 		return CPU_OMAP34XX;

 	hawkeye = (cpuid >> HAWKEYE_SHIFT) & 0xffff;
 	switch (hawkeye) {
 	case HAWKEYE_OMAP34XX:
 		cpu_family = CPU_OMAP34XX;
 		break;
 	case HAWKEYE_AM35XX:
 		cpu_family = CPU_AM35XX;
 		break;
 	case HAWKEYE_OMAP36XX:
 		cpu_family = CPU_OMAP36XX;
 		break;
 	default:
 		cpu_family = CPU_OMAP34XX;
 	}

 	return cpu_family;
 }

 /******************************************
  * get_cpu_rev(void) - extract version info
  ******************************************/
 u32 get_cpu_rev(void)
 {
 	u32 cpuid = get_cpu_id();

 	if (cpuid == 0)
 		return CPU_3XX_ES10;
 	else
 		return (cpuid >> CPU_3XX_ID_SHIFT) & 0xf;
 }

 /*****************************************************************
  * get_sku_id(void) - read sku_id to get info on max clock rate
  *****************************************************************/
 u32 get_sku_id(void)
 {
 	struct ctrl_id *id_base = (struct ctrl_id *)OMAP34XX_ID_L4_IO_BASE;
 	return readl(&id_base->sku_id) & SKUID_CLK_MASK;
 }

 /***************************************************************************
  *  get_gpmc0_base() - Return current address hardware will be
  *     fetching from. The below effectively gives what is correct, its a bit
  *   mis-leading compared to the TRM.  For the most general case the mask
  *   needs to be also taken into account this does work in practice.
  *   - for u-boot we currently map:
  *       -- 0 to nothing,
  *       -- 4 to flash
  *       -- 8 to enent
  *       -- c to wifi
  ****************************************************************************/
 u32 get_gpmc0_base(void)
 {
 	u32 b;

 	b = readl(&gpmc_cfg->cs[0].config7);
 	b &= 0x1F;		/* keep base [5:0] */
 	b = b << 24;		/* ret 0x0b000000 */
 	return b;
 }

 /*******************************************************************
  * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
  *******************************************************************/
 u32 get_gpmc0_width(void)
 {
 	return WIDTH_16BIT;
 }

 /*************************************************************************
  * get_board_rev() - setup to pass kernel board revision information
  * returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
  *************************************************************************/
 u32 __weak get_board_rev(void)
 {
 	return 0x20;
 }

 /********************************************************
  *  get_base(); get upper addr of current execution
  *******************************************************/
 u32 get_base(void)
 {
 	u32 val;

 	__asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
 	val &= 0xF0000000;
 	val >>= 28;
 	return val;
 }

 /********************************************************
  *  is_running_in_flash() - tell if currently running in
  *  FLASH.
  *******************************************************/
 u32 is_running_in_flash(void)
 {
 	if (get_base() < 4)
 		return 1;	/* in FLASH */

 	return 0;		/* running in SRAM or SDRAM */
 }

 /********************************************************
  *  is_running_in_sram() - tell if currently running in
  *  SRAM.
  *******************************************************/
 u32 is_running_in_sram(void)
 {
 	if (get_base() == 4)
 		return 1;	/* in SRAM */

 	return 0;		/* running in FLASH or SDRAM */
 }

 /********************************************************
  *  is_running_in_sdram() - tell if currently running in
  *  SDRAM.
  *******************************************************/
 u32 is_running_in_sdram(void)
 {
 	if (get_base() > 4)
 		return 1;	/* in SDRAM */

 	return 0;		/* running in SRAM or FLASH */
 }

 /***************************************************************
  *  get_boot_type() - Is this an XIP type device or a stream one
  *  bits 4-0 specify type. Bit 5 says mem/perif
  ***************************************************************/
 u32 get_boot_type(void)
 {
 	return (readl(&ctrl_base->status) & SYSBOOT_MASK);
 }

 /*************************************************************
  *  get_device_type(): tell if GP/HS/EMU/TST
  *************************************************************/
 u32 get_device_type(void)
 {
 	return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
 }

 #ifdef CONFIG_DISPLAY_CPUINFO
 /**
  * Print CPU information
  */
 int print_cpuinfo (void)
 {
 	char *cpu_family_s, *cpu_s, *sec_s, *max_clk;

 	switch (get_cpu_family()) {
 	case CPU_OMAP34XX:
 		cpu_family_s = "OMAP";
 		switch (get_cpu_type()) {
 		case OMAP3503:
 			cpu_s = "3503";
 			break;
 		case OMAP3515:
 			cpu_s = "3515";
 			break;
 		case OMAP3525:
 			cpu_s = "3525";
 			break;
 		case OMAP3530:
 			cpu_s = "3530";
 			break;
 		default:
 			cpu_s = "35XX";
 			break;
 		}
 		if ((get_cpu_rev() >= CPU_3XX_ES31) &&
 		    (get_sku_id() == SKUID_CLK_720MHZ))
 			max_clk = "720 mHz";
 		else
 			max_clk = "600 mHz";

 		break;
 	case CPU_AM35XX:
 		cpu_family_s = "AM";
 		switch (get_cpu_type()) {
 		case AM3505:
 			cpu_s = "3505";
 			break;
 		case AM3517:
 			cpu_s = "3517";
 			break;
 		default:
 			cpu_s = "35XX";
 			break;
 		}
 		max_clk = "600 Mhz";
 		break;
 	case CPU_OMAP36XX:
 		cpu_family_s = "OMAP";
 		switch (get_cpu_type()) {
 		case OMAP3730:
 			cpu_s = "3630/3730";
 			break;
 		default:
 			cpu_s = "36XX/37XX";
 			break;
 		}
 		max_clk = "1 Ghz";
 		break;
 	default:
 		cpu_family_s = "OMAP";
 		cpu_s = "35XX";
 		max_clk = "600 Mhz";
 	}

 	switch (get_device_type()) {
 	case TST_DEVICE:
 		sec_s = "TST";
 		break;
 	case EMU_DEVICE:
 		sec_s = "EMU";
 		break;
 	case HS_DEVICE:
 		sec_s = "HS";
 		break;
 	case GP_DEVICE:
 		sec_s = "GP";
 		break;
 	default:
 		sec_s = "?";
 	}

 	if (CPU_OMAP36XX == get_cpu_family())
 		printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
 			cpu_family_s, cpu_s, sec_s,
 			rev_s_37xx[get_cpu_rev()], max_clk);
 	else
 		printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
 			cpu_family_s, cpu_s, sec_s,
 			rev_s[get_cpu_rev()], max_clk);

 	return 0;
 }
 #endif	/* CONFIG_DISPLAY_CPUINFO */
	/*
	* (C) Copyright 2008
	* Texas Instruments, <www.ti.com>
	*
	* Author :
	* Manikandan Pillai <mani.pillai@ti.com>
	*
	* Derived from Beagle Board and 3430 SDP code by
	* Richard Woodruff <r-woodruff2@ti.com>
	* Syed Mohammed Khasim <khasim@ti.com>
	*
	* 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 <asm/io.h>
	#include <asm/arch/mem.h> /* get mem tables */
	#include <asm/arch/sys_proto.h>
	#include <i2c.h>
	#include <linux/compiler.h>

	extern omap3_sysinfo sysinfo;
	static struct ctrl ctrl_base = (struct ctrl )OMAP34XX_CTRL_BASE;

	#ifdef CONFIG_DISPLAY_CPUINFO
	static char *rev_s[CPU_3XX_MAX_REV] = {
	"1.0",
	"2.0",
	"2.1",
	"3.0",
	"3.1",
	"UNKNOWN",
	"UNKNOWN",
	"3.1.2"};

	/* this is the revision table for 37xx CPUs */
	static char *rev_s_37xx[CPU_37XX_MAX_REV] = {
	"1.0",
	"1.1",
	"1.2"};
	#endif /* CONFIG_DISPLAY_CPUINFO */

	/*****************************************************************
	* dieid_num_r(void) - read and set die ID
	*****************************************************************/
	void dieid_num_r(void)
	{
	struct ctrl_id id_base = (struct ctrl_id )OMAP34XX_ID_L4_IO_BASE;
	char *uid_s, die_id[34];
	u32 id[4];

	memset(die_id, 0, sizeof(die_id));

	uid_s = getenv("dieid#");

	if (uid_s == NULL) {
	id[3] = readl(&id_base->die_id_0);
	id[2] = readl(&id_base->die_id_1);
	id[1] = readl(&id_base->die_id_2);
	id[0] = readl(&id_base->die_id_3);
	sprintf(die_id, "%08x%08x%08x%08x", id[0], id[1], id[2], id[3]);
	setenv("dieid#", die_id);
	uid_s = die_id;
	}

	printf("Die ID #%s\n", uid_s);
	}

	/******************************************
	* get_cpu_type(void) - extract cpu info
	******************************************/
	u32 get_cpu_type(void)
	{
	return readl(&ctrl_base->ctrl_omap_stat);
	}

	/******************************************
	* get_cpu_id(void) - extract cpu id
	* returns 0 for ES1.0, cpuid otherwise
	******************************************/
	u32 get_cpu_id(void)
	{
	struct ctrl_id *id_base;
	u32 cpuid = 0;

	/*
	* On ES1.0 the IDCODE register is not exposed on L4
	* so using CPU ID to differentiate between ES1.0 and > ES1.0.
	*/
	__asm__ __volatile__("mrc p15, 0, %0, c0, c0, 0":"=r"(cpuid));
	if ((cpuid & 0xf) == 0x0) {
	return 0;
	} else {
	/* Decode the IDs on > ES1.0 */
	id_base = (struct ctrl_id *) OMAP34XX_ID_L4_IO_BASE;

	cpuid = readl(&id_base->idcode);
	}

	return cpuid;
	}

	/******************************************
	* get_cpu_family(void) - extract cpu info
	******************************************/
	u32 get_cpu_family(void)
	{
	u16 hawkeye;
	u32 cpu_family;
	u32 cpuid = get_cpu_id();

	if (cpuid == 0)
	return CPU_OMAP34XX;

	hawkeye = (cpuid >> HAWKEYE_SHIFT) & 0xffff;
	switch (hawkeye) {
	case HAWKEYE_OMAP34XX:
	cpu_family = CPU_OMAP34XX;
	break;
	case HAWKEYE_AM35XX:
	cpu_family = CPU_AM35XX;
	break;
	case HAWKEYE_OMAP36XX:
	cpu_family = CPU_OMAP36XX;
	break;
	default:
	cpu_family = CPU_OMAP34XX;
	}

	return cpu_family;
	}

	/******************************************
	* get_cpu_rev(void) - extract version info
	******************************************/
	u32 get_cpu_rev(void)
	{
	u32 cpuid = get_cpu_id();

	if (cpuid == 0)
	return CPU_3XX_ES10;
	else
	return (cpuid >> CPU_3XX_ID_SHIFT) & 0xf;
	}

	/*****************************************************************
	* get_sku_id(void) - read sku_id to get info on max clock rate
	*****************************************************************/
	u32 get_sku_id(void)
	{
	struct ctrl_id id_base = (struct ctrl_id )OMAP34XX_ID_L4_IO_BASE;
	return readl(&id_base->sku_id) & SKUID_CLK_MASK;
	}

	/***************************************************************************
	* get_gpmc0_base() - Return current address hardware will be
	* fetching from. The below effectively gives what is correct, its a bit
	* mis-leading compared to the TRM. For the most general case the mask
	* needs to be also taken into account this does work in practice.
	* - for u-boot we currently map:
	* -- 0 to nothing,
	* -- 4 to flash
	* -- 8 to enent
	* -- c to wifi
	****************************************************************************/
	u32 get_gpmc0_base(void)
	{
	u32 b;

	b = readl(&gpmc_cfg->cs[0].config7);
	b &= 0x1F; /* keep base [5:0] */
	b = b << 24; /* ret 0x0b000000 */
	return b;
	}

	/*******************************************************************
	* get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
	*******************************************************************/
	u32 get_gpmc0_width(void)
	{
	return WIDTH_16BIT;
	}

	/*************************************************************************
	* get_board_rev() - setup to pass kernel board revision information
	* returns:(bit[0-3] sub version, higher bit[7-4] is higher version)
	*************************************************************************/
	u32 __weak get_board_rev(void)
	{
	return 0x20;
	}

	/********************************************************
	* get_base(); get upper addr of current execution
	*******************************************************/
	u32 get_base(void)
	{
	u32 val;

	__asm__ __volatile__("mov %0, pc \n":"=r"(val)::"memory");
	val &= 0xF0000000;
	val >>= 28;
	return val;
	}

	/********************************************************
	* is_running_in_flash() - tell if currently running in
	* FLASH.
	*******************************************************/
	u32 is_running_in_flash(void)
	{
	if (get_base() < 4)
	return 1; /* in FLASH */

	return 0; /* running in SRAM or SDRAM */
	}

	/********************************************************
	* is_running_in_sram() - tell if currently running in
	* SRAM.
	*******************************************************/
	u32 is_running_in_sram(void)
	{
	if (get_base() == 4)
	return 1; /* in SRAM */

	return 0; /* running in FLASH or SDRAM */
	}

	/********************************************************
	* is_running_in_sdram() - tell if currently running in
	* SDRAM.
	*******************************************************/
	u32 is_running_in_sdram(void)
	{
	if (get_base() > 4)
	return 1; /* in SDRAM */

	return 0; /* running in SRAM or FLASH */
	}

	/***************************************************************
	* get_boot_type() - Is this an XIP type device or a stream one
	* bits 4-0 specify type. Bit 5 says mem/perif
	***************************************************************/
	u32 get_boot_type(void)
	{
	return (readl(&ctrl_base->status) & SYSBOOT_MASK);
	}

	/*************************************************************
	* get_device_type(): tell if GP/HS/EMU/TST
	*************************************************************/
	u32 get_device_type(void)
	{
	return ((readl(&ctrl_base->status) & (DEVICE_MASK)) >> 8);
	}

	#ifdef CONFIG_DISPLAY_CPUINFO
	/**
	* Print CPU information
	*/
	int print_cpuinfo (void)
	{
	char cpu_family_s, cpu_s, sec_s, max_clk;

	switch (get_cpu_family()) {
	case CPU_OMAP34XX:
	cpu_family_s = "OMAP";
	switch (get_cpu_type()) {
	case OMAP3503:
	cpu_s = "3503";
	break;
	case OMAP3515:
	cpu_s = "3515";
	break;
	case OMAP3525:
	cpu_s = "3525";
	break;
	case OMAP3530:
	cpu_s = "3530";
	break;
	default:
	cpu_s = "35XX";
	break;
	}
	if ((get_cpu_rev() >= CPU_3XX_ES31) &&
	(get_sku_id() == SKUID_CLK_720MHZ))
	max_clk = "720 mHz";
	else
	max_clk = "600 mHz";

	break;
	case CPU_AM35XX:
	cpu_family_s = "AM";
	switch (get_cpu_type()) {
	case AM3505:
	cpu_s = "3505";
	break;
	case AM3517:
	cpu_s = "3517";
	break;
	default:
	cpu_s = "35XX";
	break;
	}
	max_clk = "600 Mhz";
	break;
	case CPU_OMAP36XX:
	cpu_family_s = "OMAP";
	switch (get_cpu_type()) {
	case OMAP3730:
	cpu_s = "3630/3730";
	break;
	default:
	cpu_s = "36XX/37XX";
	break;
	}
	max_clk = "1 Ghz";
	break;
	default:
	cpu_family_s = "OMAP";
	cpu_s = "35XX";
	max_clk = "600 Mhz";
	}

	switch (get_device_type()) {
	case TST_DEVICE:
	sec_s = "TST";
	break;
	case EMU_DEVICE:
	sec_s = "EMU";
	break;
	case HS_DEVICE:
	sec_s = "HS";
	break;
	case GP_DEVICE:
	sec_s = "GP";
	break;
	default:
	sec_s = "?";
	}

	if (CPU_OMAP36XX == get_cpu_family())
	printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
	cpu_family_s, cpu_s, sec_s,
	rev_s_37xx[get_cpu_rev()], max_clk);
	else
	printf("%s%s-%s ES%s, CPU-OPP2, L3-165MHz, Max CPU Clock %s\n",
	cpu_family_s, cpu_s, sec_s,
	rev_s[get_cpu_rev()], max_clk);

	return 0;
	}
	#endif /* CONFIG_DISPLAY_CPUINFO */