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Annotation of funnyos/dev/cpu.c, Revision 1.4

1.1       init        1: /*
1.4     ! init        2:  * $Id: cpu.c,v 1.3 2007/10/16 17:33:40 init Exp $
1.1       init        3:  */
                      4: #include <sys/types.h>
                      5: #include <sys/device.h>
                      6: #include <libkern/printf.h>
                      7:
1.3       init        8: #include <dev/cpuvar.h>
1.1       init        9:
                     10:
                     11: int    cpu_attach(struct device *, uint32_t, uint8_t);
                     12:
                     13:
                     14: struct driver cpu_dr = {
                     15:        sizeof(struct cpu_dd),
                     16:        cpu_attach,
1.4     ! init       17:        NULL,
1.1       init       18:        NULL
                     19: };
                     20:
                     21: void   cpu_identify(struct cpu_dd *);
                     22:
                     23: int
                     24: cpu_attach(struct device *self, uint32_t loc, uint8_t flags)
                     25: {
                     26:        struct cpu_dd *ddp = self->dv_devdata;
                     27:
                     28:        /* identify CPU */
                     29:        cpu_identify(ddp);
                     30:
                     31:
                     32:        printf("%s CPU at %d MHz (flags=0x%x)\n", ddp->cpu_name,
                     33:                                                        ddp->cpu_freq, ddp->cpu_flags);
                     34:
1.2       init       35:        return(0);
1.1       init       36: }
                     37:
                     38:
                     39: void
                     40: cpu_identify(struct cpu_dd *ddp)
                     41: {
                     42:        /*
                     43:         * Identify given CPU using cp15 (System Control Co-Processor) register 0 (ID)
                     44:         */
1.3       init       45:         uint32_t rd;
1.1       init       46:
                     47:        /* store cp15 ID register into rd */
                     48: //     __asm __volatile("mrc p15 0, %0, c0, c0, 0"
                     49: //                                                                                             :"=r" (rd));
                     50:
                     51:        /* parse ID; See the ARM Architecture Reference Manual for details. */
                     52:        /* XXX */
                     53:
                     54:        ddp->cpu_name = "StrongARM SA110";
                     55:        ddp->cpu_freq = 233;
                     56:        ddp->cpu_flags = CPU_HAVE_ICACHE | CPU_HAVE_DCACHE | CPU_HAVE_MMU;
                     57: }
                     58: