void __init setup_arch(char **cmdline_p)
{
- unsigned long highest_paddr;
int i;
/* Initialize PROM console and command line. */
idprom_init();
(void) prom_probe_memory();
- /* In paging_init() we tip off this value to see if we need
- * to change init_mm.pgd to point to the real alias mapping.
- */
phys_base = 0xffffffffffffffffUL;
- highest_paddr = 0UL;
for (i = 0; sp_banks[i].num_bytes != 0; i++) {
unsigned long top;
phys_base = sp_banks[i].base_addr;
top = sp_banks[i].base_addr +
sp_banks[i].num_bytes;
- if (highest_paddr < top)
- highest_paddr = top;
}
pfn_base = phys_base >> PAGE_SHIFT;