/* * Catch-all for Orion-specific code that doesn't fit easily elsewhere. *   -- Cort */#include <linux/config.h>#include <linux/errno.h>#include <linux/hdreg.h>#include <linux/init.h>#include <linux/ioport.h>#include <linux/sched.h>#include <linux/kernel.h>#include <linux/mm.h>#include <linux/stddef.h>#include <linux/string.h>#include <linux/unistd.h>#include <linux/ptrace.h>#include <linux/malloc.h>#include <linux/user.h>#include <linux/utsname.h>#include <linux/a.out.h>#include <linux/tty.h>#include <linux/interrupt.h>#ifdef CONFIG_BLK_DEV_RAM#include <linux/blk.h>#endif#include <linux/ide.h>#ifdef CONFIG_RTC#include <linux/timex.h>#endif#include <asm/asm.h>#include <asm/bootinfo.h>#include <asm/cachectl.h>#include <asm/io.h>#include <asm/stackframe.h>#include <asm/system.h>#include <asm/cpu.h>#include <linux/bootmem.h>#include <asm/addrspace.h>#include <asm/mc146818rtc.h>#include <asm/orion.h>char arcs_cmdline[CL_SIZE] = { "console=ttyS0,19200" };extern int _end;static unsigned char orion_rtc_read_data(unsigned long addr){	return 0;}static void orion_rtc_write_data(unsigned char data, unsigned long addr){}static int orion_rtc_bcd_mode(void){	return 0;}struct rtc_ops orion_rtc_ops = {	&orion_rtc_read_data,	&orion_rtc_write_data,	&orion_rtc_bcd_mode};extern void InitCIB(void);extern void InitQpic(void);extern void InitCupid(void);void __init orion_setup(void){	extern void (*board_time_init)(struct irqaction *irq);	void orion_time_init(struct irqaction *);		rtc_ops = &orion_rtc_ops;	board_time_init = orion_time_init;	mips_io_port_base = GT64120_BASE;	InitCIB();	InitQpic();	InitCupid();}#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)unsigned long mem_size;int __init prom_init(int a, char **b, char **c, int *d){	unsigned long free_start, free_end, start_pfn, bootmap_size;	extern unsigned long orion_initrd_start[], orion_initrd_size;	mips_machgroup = MACH_GROUP_ORION;	/* 64 MB non-upgradable */	mem_size = 64 << 20;		free_start = PHYSADDR(PFN_ALIGN(&_end));	free_end = mem_size;	start_pfn = PFN_UP((unsigned long)&_end);		/* Register all the contiguous memory with the bootmem allocator	   and free it.  Be careful about the bootmem freemap.  */	bootmap_size = init_bootmem(start_pfn, mem_size >> PAGE_SHIFT);		/* Free the entire available memory after the _end symbol.  */	free_start += bootmap_size;	free_bootmem(free_start, free_end-free_start);	initrd_start = (ulong)orion_initrd_start;	initrd_end = (ulong)orion_initrd_start + (ulong)orion_initrd_size;	initrd_below_start_ok = 1;	return 0;}void prom_free_prom_memory (void){}int page_is_ram(unsigned long pagenr){	if ( pagenr < (mem_size >> PAGE_SHIFT) )		return 1;	return 0;}