diff options
Diffstat (limited to 'arch/arm/mach-davinci/common.c')
| -rw-r--r-- | arch/arm/mach-davinci/common.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/arm/mach-davinci/common.c b/arch/arm/mach-davinci/common.c index 9a5486f5519..29b3a8d5121 100644 --- a/arch/arm/mach-davinci/common.c +++ b/arch/arm/mach-davinci/common.c @@ -15,13 +15,31 @@ #include <asm/mach/map.h> #include <mach/common.h> +#include <mach/cputype.h> struct davinci_soc_info davinci_soc_info; EXPORT_SYMBOL(davinci_soc_info); +static struct davinci_id * __init davinci_get_id(u32 jtag_id) +{ + int i; + struct davinci_id *dip; + u8 variant = (jtag_id & 0xf0000000) >> 28; + u16 part_no = (jtag_id & 0x0ffff000) >> 12; + + for (i = 0, dip = davinci_soc_info.ids; i < davinci_soc_info.ids_num; + i++, dip++) + /* Don't care about the manufacturer right now */ + if ((dip->part_no == part_no) && (dip->variant == variant)) + return dip; + + return NULL; +} + void __init davinci_common_init(struct davinci_soc_info *soc_info) { int ret; + struct davinci_id *dip; if (!soc_info) { ret = -EINVAL; @@ -46,7 +64,16 @@ void __init davinci_common_init(struct davinci_soc_info *soc_info) * We want to check CPU revision early for cpu_is_xxxx() macros. * IO space mapping must be initialized before we can do that. */ - davinci_check_revision(); + davinci_soc_info.jtag_id = __raw_readl(davinci_soc_info.jtag_id_base); + + dip = davinci_get_id(davinci_soc_info.jtag_id); + if (!dip) { + ret = -EINVAL; + goto err; + } + + davinci_soc_info.cpu_id = dip->cpu_id; + pr_info("DaVinci %s variant 0x%x\n", dip->name, dip->variant); return; |