| /* |
| * Machine specific setup for generic |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <asm/arch_hooks.h> |
| #include <asm/voyager.h> |
| #include <asm/e820.h> |
| #include <asm/io.h> |
| #include <asm/setup.h> |
| |
| void __init pre_intr_init_hook(void) |
| { |
| init_ISA_irqs(); |
| } |
| |
| /* |
| * IRQ2 is cascade interrupt to second interrupt controller |
| */ |
| static struct irqaction irq2 = { no_action, 0, CPU_MASK_NONE, "cascade", NULL, NULL}; |
| |
| void __init intr_init_hook(void) |
| { |
| #ifdef CONFIG_SMP |
| smp_intr_init(); |
| #endif |
| |
| setup_irq(2, &irq2); |
| } |
| |
| void __init pre_setup_arch_hook(void) |
| { |
| /* Voyagers run their CPUs from independent clocks, so disable |
| * the TSC code because we can't sync them */ |
| tsc_disable = 1; |
| } |
| |
| void __init trap_init_hook(void) |
| { |
| } |
| |
| static struct irqaction irq0 = { |
| .handler = timer_interrupt, |
| .flags = IRQF_DISABLED | IRQF_NOBALANCING, |
| .mask = CPU_MASK_NONE, |
| .name = "timer" |
| }; |
| |
| void __init time_init_hook(void) |
| { |
| irq0.mask = cpumask_of_cpu(safe_smp_processor_id()); |
| setup_irq(0, &irq0); |
| } |
| |
| /* Hook for machine specific memory setup. */ |
| |
| char * __init machine_specific_memory_setup(void) |
| { |
| char *who; |
| |
| who = "NOT VOYAGER"; |
| |
| if(voyager_level == 5) { |
| __u32 addr, length; |
| int i; |
| |
| who = "Voyager-SUS"; |
| |
| e820.nr_map = 0; |
| for(i=0; voyager_memory_detect(i, &addr, &length); i++) { |
| add_memory_region(addr, length, E820_RAM); |
| } |
| return who; |
| } else if(voyager_level == 4) { |
| __u32 tom; |
| __u16 catbase = inb(VOYAGER_SSPB_RELOCATION_PORT)<<8; |
| /* select the DINO config space */ |
| outb(VOYAGER_DINO, VOYAGER_CAT_CONFIG_PORT); |
| /* Read DINO top of memory register */ |
| tom = ((inb(catbase + 0x4) & 0xf0) << 16) |
| + ((inb(catbase + 0x5) & 0x7f) << 24); |
| |
| if(inb(catbase) != VOYAGER_DINO) { |
| printk(KERN_ERR "Voyager: Failed to get DINO for L4, setting tom to EXT_MEM_K\n"); |
| tom = (EXT_MEM_K)<<10; |
| } |
| who = "Voyager-TOM"; |
| add_memory_region(0, 0x9f000, E820_RAM); |
| /* map from 1M to top of memory */ |
| add_memory_region(1*1024*1024, tom - 1*1024*1024, E820_RAM); |
| /* FIXME: Should check the ASICs to see if I need to |
| * take out the 8M window. Just do it at the moment |
| * */ |
| add_memory_region(8*1024*1024, 8*1024*1024, E820_RESERVED); |
| return who; |
| } |
| |
| who = "BIOS-e820"; |
| |
| /* |
| * Try to copy the BIOS-supplied E820-map. |
| * |
| * Otherwise fake a memory map; one section from 0k->640k, |
| * the next section from 1mb->appropriate_mem_k |
| */ |
| sanitize_e820_map(E820_MAP, &E820_MAP_NR); |
| if (copy_e820_map(E820_MAP, E820_MAP_NR) < 0) { |
| unsigned long mem_size; |
| |
| /* compare results from other methods and take the greater */ |
| if (ALT_MEM_K < EXT_MEM_K) { |
| mem_size = EXT_MEM_K; |
| who = "BIOS-88"; |
| } else { |
| mem_size = ALT_MEM_K; |
| who = "BIOS-e801"; |
| } |
| |
| e820.nr_map = 0; |
| add_memory_region(0, LOWMEMSIZE(), E820_RAM); |
| add_memory_region(HIGH_MEMORY, mem_size << 10, E820_RAM); |
| } |
| return who; |
| } |