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Annotation of funnyos/arch/sam7s64/config.c, Revision 1.4

1.1       init        1: /*
1.4     ! nbrk        2:  * $Id: config.c,v 1.3 2007/11/09 16:12:15 init Exp $
1.1       init        3:  */
                      4: #include <sys/types.h>
                      5: #include <sys/device.h>
                      6:
1.4     ! nbrk        7: /* devices' regs that we will touch in config_machineinit() */
        !             8: #include <arch/sam7s64/dev/sapmcreg.h>
        !             9:
1.1       init       10: /*
                     11:  * Configuration file for platform (AT91SAM7S64).
                     12:  */
                     13:
                     14: /* device drivers */
                     15: extern struct driver root_dr;
                     16: extern struct driver cpu_dr;
1.3       init       17: extern struct driver saapbus_dr;
1.1       init       18:
                     19:
                     20: extern void(*putchar)(char);
1.2       init       21: void   sauart_early_putc(char ch);
1.1       init       22:
                     23: /* amount of physical memory, in Bytes */
1.2       init       24: uint32_t physmem = 16384;
1.1       init       25:
                     26: /*
                     27:  * Where to attach each device.
                     28:  */
                     29: struct attachinfo config_attachinfo[] = {
                     30:        /* child,   parent, pminor, loc,        intrno, flags */
                     31:        { "cpu" ,       "root",         0, 0,                   0,      0 },
1.3       init       32:        { "saapbus","root",     0, 0,                   0,      0 },
1.1       init       33:        { NULL,         NULL,           0, 0,                   0,  0 }
                     34: };
                     35:
                     36:
                     37: /*
                     38:  * Link device names with their drivers.
                     39:  */
                     40: struct driverinfo config_driverinfo[] = {
                     41: /* name, driverp, ninstances (should be -1) */
                     42:        { "root", &root_dr, -1 },
                     43:        { "cpu" , &cpu_dr, -1 },
1.3       init       44:        { "saapbus" , &saapbus_dr, -1 },
1.1       init       45:        { NULL, NULL, 0 }
                     46: };
                     47:
                     48:
                     49: /*
                     50:  * Machine early-stage initialization hooks.
                     51:  */
                     52:
                     53: void
1.4     ! nbrk       54: config_machineinit(void)
1.1       init       55: {
                     56:        /*
1.4     ! nbrk       57:         * Initialize critical devices at startup.
1.1       init       58:         */
1.4     ! nbrk       59:
        !            60:        /* XXX kill magic */
        !            61:
        !            62:        /* enable main oscillator and set 6 Slow Clock cycles to wait for its startup */
        !            63:        *(uint32_t)(SAPMC_BASE + SAPMC_CKGR_MOR) = (0x0000ff00 & (0x06 << 8)) | 0x00000001;
        !            64:
        !            65:        /* wait main osc. to stabilize.. */
        !            66:        while (*(uint32_t)(SAPMC_BASE + SAPMC_PMC_SR) & 0x00000001 )
        !            67:                ;
        !            68:
        !            69:        /* TODO set PLL */
        !            70: //     *(uint32_t)(SAPMC_BASE + SAPMC_PMC_MCKR) =
1.1       init       71: }
                     72:
                     73: