From 048f4bd7607eb714d4831f90dea6fd27eac9e494 Mon Sep 17 00:00:00 2001 From: Sanjeev Premi Date: Sun, 22 Nov 2009 10:10:54 -0800 Subject: 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: Sanjeev Premi Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/id.c | 65 ++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 54 insertions(+), 11 deletions(-) (limited to 'arch/arm/mach-omap2') diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index d7ac8d5..88999ea 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -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); -- cgit v1.1