diff options
Diffstat (limited to 'arch/arm/mach-omap2/id.c')
| -rw-r--r-- | arch/arm/mach-omap2/id.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index f48a4b2654dd..3641ba0c16ef 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -246,6 +246,31 @@ void __init omap3_check_revision(void) } } +void __init omap4_check_revision(void) +{ + u32 idcode; + u16 hawkeye; + u8 rev; + char *rev_name = "ES1.0"; + + /* + * The IC rev detection is done with hawkeye and rev. + * Note that rev does not map directly to defined processor + * revision numbers as ES1.0 uses value 0. + */ + idcode = read_tap_reg(OMAP_TAP_IDCODE); + hawkeye = (idcode >> 12) & 0xffff; + rev = (idcode >> 28) & 0xff; + + if ((hawkeye == 0xb852) && (rev == 0x0)) { + omap_revision = OMAP4430_REV_ES1_0; + pr_info("OMAP%04x %s\n", omap_rev() >> 16, rev_name); + return; + } + + pr_err("Unknown OMAP4 CPU id\n"); +} + #define OMAP3_SHOW_FEATURE(feat) \ if (omap3_has_ ##feat()) \ printk(#feat" "); @@ -336,7 +361,7 @@ void __init omap2_check_revision(void) omap3_check_features(); omap3_cpuinfo(); } else if (cpu_is_omap44xx()) { - printk(KERN_INFO "FIXME: CPU revision = OMAP4430\n"); + omap4_check_revision(); return; } else { pr_err("OMAP revision unknown, please fix!\n"); |