Commit 048f4bd7 authored by Sanjeev Premi's avatar Sanjeev Premi Committed by Tony Lindgren
Browse files

omap3: Runtime detection of OMAP35x devices 



Add runtime check for these OMAP35x variations
based on the detected Si features:
  OMAP3503, OMAP3515, OMAP3525 and OMA3530.

Also, delayed the call to pr_info() into actual
variant is detected in omap3_cpuinfo()

Signed-off-by: default avatarSanjeev Premi <premi@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 8384ce07

arch/arm/mach-omap2/id.c

+54 −11
Original line number Diff line number Diff line
@@ -187,7 +187,6 @@ void __init omap3_check_revision(void) 
	u32 cpuid, idcode;

	u16 hawkeye;

	u8 rev;

	char *rev_name = "ES1.0";



	/*

	 * We cannot access revision registers on ES1.0.
@@ -197,7 +196,7 @@ void __init omap3_check_revision(void) 
	cpuid = read_cpuid(CPUID_ID);

	if ((((cpuid >> 4) & 0xfff) == 0xc08) && ((cpuid & 0xf) == 0x0)) {

		omap_revision = OMAP3430_REV_ES1_0;

		goto out;

		return;

	}



	/*
@@ -212,31 +211,24 @@ void __init omap3_check_revision(void) 


	if (hawkeye == 0xb7ae) {

		switch (rev) {

		case 0:

		case 0: /* Take care of early samples */

		case 1:

			omap_revision = OMAP3430_REV_ES2_0;

			rev_name = "ES2.0";

			break;

		case 2:

			omap_revision = OMAP3430_REV_ES2_1;

			rev_name = "ES2.1";

			break;

		case 3:

			omap_revision = OMAP3430_REV_ES3_0;

			rev_name = "ES3.0";

			break;

		case 4:

			omap_revision = OMAP3430_REV_ES3_1;

			rev_name = "ES3.1";

			break;

		default:

			/* Use the latest known revision as default */

			omap_revision = OMAP3430_REV_ES3_1;

			rev_name = "Unknown revision\n";

		}

	}



out:

	pr_info("OMAP%04x %s\n", omap_rev() >> 16, rev_name);

}



#define OMAP3_SHOW_FEATURE(feat)		\
@@ -248,6 +240,57 @@ out: 


void __init omap3_cpuinfo(void)

{

	u8 rev = GET_OMAP_REVISION();

	char cpu_name[16], cpu_rev[16];



	/* OMAP3430 and OMAP3530 are assumed to be same.

	 *

	 * OMAP3525, OMAP3515 and OMAP3503 can be detected only based

	 * on available features. Upon detection, update the CPU id

	 * and CPU class bits.

	 */

	if (omap3_has_iva() && omap3_has_sgx()) {

		strcpy(cpu_name, "3430/3530");

	}

	else if (omap3_has_sgx()) {

		omap_revision = OMAP3525_REV(rev);

		strcpy(cpu_name, "3525");

	}

	else if (omap3_has_iva()) {

		omap_revision = OMAP3515_REV(rev);

		strcpy(cpu_name, "3515");

	}

	else {

		omap_revision = OMAP3503_REV(rev);

		strcpy(cpu_name, "3503");

	}



	switch (rev) {

	case OMAP_REVBITS_00:

		strcpy(cpu_rev, "1.0");

		break;

	case OMAP_REVBITS_10:

		strcpy(cpu_rev, "2.0");

		break;

	case OMAP_REVBITS_20:

		strcpy(cpu_rev, "2.1");

		break;

	case OMAP_REVBITS_30:

		strcpy(cpu_rev, "3.0");

		break;

	case OMAP_REVBITS_40:

		strcpy(cpu_rev, "3.1");

		break;

	default:

		/* Use the latest known revision as default */

		strcpy(cpu_rev, "3.1");

	}



	/*

	 * Print verbose information

	 */

	pr_info("OMAP%s ES%s\n", cpu_name, cpu_rev);



	OMAP3_SHOW_FEATURE(l2cache);

	OMAP3_SHOW_FEATURE(iva);

	OMAP3_SHOW_FEATURE(sgx);

arch/arm/plat-omap/include/plat/cpu.h

+41 −0
Original line number Diff line number Diff line
@@ -58,6 +58,23 @@ struct omap_chip_id { 
 */

unsigned int omap_rev(void);



/*

 * Define CPU revision bits

 *

 * Verbose meaning of the revision bits may be different for a silicon

 * family. This difference can be handled separately.

 */

#define OMAP_REVBITS_00		0x00

#define OMAP_REVBITS_10		0x10

#define OMAP_REVBITS_20		0x20

#define OMAP_REVBITS_30		0x30

#define OMAP_REVBITS_40		0x40



/*

 * Get the CPU revision for OMAP devices

 */

#define GET_OMAP_REVISION()	((omap_rev() >> 8) & 0xff)



/*

 * Test if multicore OMAP support is needed

 */
@@ -303,6 +320,10 @@ IS_OMAP_TYPE(3430, 0x3430) 
#define cpu_is_omap2422()		0

#define cpu_is_omap2423()		0

#define cpu_is_omap2430()		0

#define cpu_is_omap3503()		0

#define cpu_is_omap3515()		0

#define cpu_is_omap3525()		0

#define cpu_is_omap3530()		0

#define cpu_is_omap3430()		0



/*
@@ -353,7 +374,21 @@ IS_OMAP_TYPE(3430, 0x3430) 


#if defined(CONFIG_ARCH_OMAP34XX)

# undef cpu_is_omap3430

# undef cpu_is_omap3503

# undef cpu_is_omap3515

# undef cpu_is_omap3525

# undef cpu_is_omap3530

# define cpu_is_omap3430()		is_omap3430()

# define cpu_is_omap3503()		(cpu_is_omap3430() &&		\

						(!omap3_has_iva()) &&	\

						(!omap3_has_sgx()))

# define cpu_is_omap3515()		(cpu_is_omap3430() &&		\

						(omap3_has_iva()) &&	\

						(!omap3_has_sgx()))

# define cpu_is_omap3525()		(cpu_is_omap3430() &&		\

						(omap3_has_sgx()) &&	\

						(!omap3_has_iva()))

# define cpu_is_omap3530()		(cpu_is_omap3430())

#endif



# if defined(CONFIG_ARCH_OMAP4)
@@ -384,6 +419,12 @@ IS_OMAP_TYPE(3430, 0x3430) 
#define OMAP3430_REV_ES3_0	0x34303034

#define OMAP3430_REV_ES3_1	0x34304034



#define OMAP35XX_CLASS		0x35000034

#define OMAP3503_REV(v)		(OMAP35XX_CLASS | (0x3503 << 16) | (v << 12))

#define OMAP3515_REV(v)		(OMAP35XX_CLASS | (0x3515 << 16) | (v << 12))

#define OMAP3525_REV(v)		(OMAP35XX_CLASS | (0x3525 << 16) | (v << 12))

#define OMAP3530_REV(v)		(OMAP35XX_CLASS | (0x3530 << 16) | (v << 12))



#define OMAP443X_CLASS		0x44300034



/*

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