void pegasos_set_l2cr(void)
{
        struct device_node *root = find_path_device("/");
        char *machine;
        struct device_node *np;
        int l2cr_value;

What about "unsigned int" above and not doing int/unsigned int
conversions and such ? (Dunno if it explains your problem at
this point but it's worth fixing anyway)

        /* On Pegasos, enable the l2 cache if needed, as the OF forgets * it */
        if (root == NULL) return;
        machine = get_property(root, "model", NULL);
        if (machine == NULL) return;
        if (strncmp(machine, "Pegasos", 7) == 0) {
                /* Enable L2 cache if needed */
                np = find_devices ("cpus");
                if (np == NULL)
                        np = find_type_devices("cpu");
                if (np != NULL) {
                        unsigned int *l2cr = (unsigned int *)
                                get_property (np, "l2cr", NULL);
                        if (l2cr == NULL) return;
                        l2cr_value = *l2cr;
                        if (!(l2cr_value & 0x80000000)) {
                                _set_L2CR(0);
                                _set_L2CR(l2cr_value | 0x80000000);
                        }
                }
        }
}

Does not die, but also does not seem to enable the l2cr thingy, but
then, i don't know how fiable the info from /proc/sys/kernel/l2cr is :

0x00000000:  L2 disabled, no parity, no instn only, no data only,
default replacement

The value is reliable, the text explanation of the bits isn't on this
CPU.

Ben.


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