/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* arch/sh64/mach-sim/setup.c
*
* ST50 Simulator Platform Support
*
* This file handles the architecture-dependent parts of initialization
*
* Copyright (C) 2000, 2001 Paolo Alberelli
*
* lethal@linux-sh.org: 15th May 2003
* Use the generic procfs cpuinfo interface, just return a valid board name.
*/
#include <linux/stddef.h>
#include <linux/init.h>
#include <linux/config.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <asm/addrspace.h>
#include <asm/processor.h>
#include <asm/platform.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/page.h>
#ifdef CONFIG_BLK_DEV_INITRD
#include "../rootfs/rootfs.h"
#endif
static __init void platform_monitor(void);
static __init void platform_setup(void);
static __init void platform_reserve(void);
#define PHYS_MEMORY CONFIG_MEMORY_SIZE_IN_MB*1024*1024
#if (PHYS_MEMORY < P1SEG_FOOTPRINT_RAM)
#error "Invalid kernel configuration. Physical memory below footprint requirements."
#endif
#define RAM_DISK_START CONFIG_MEMORY_START+P1SEG_INITRD_BLOCK /* Top of 4MB */
#ifdef PLATFORM_ROMFS_SIZE
#define RAM_DISK_SIZE (PAGE_ALIGN(PLATFORM_ROMFS_SIZE)) /* Variable Top */
#if ((RAM_DISK_START + RAM_DISK_SIZE) > (CONFIG_MEMORY_START + PHYS_MEMORY))
#error "Invalid kernel configuration. ROM RootFS exceeding physical memory."
#endif
#else
#define RAM_DISK_SIZE P1SEG_INITRD_BLOCK_SIZE /* Top of 4MB */
#endif
#define RES_COUNT(res) ((sizeof((res))/sizeof(struct resource)))
/*
* Platform Dependent Interrupt Priorities.
*/
/* Using defaults defined in irq.h */
#define RES NO_PRIORITY /* Disabled */
#define IR0 IRL0_PRIORITY /* IRLs */
#define IR1 IRL1_PRIORITY
#define IR2 IRL2_PRIORITY
#define IR3 IRL3_PRIORITY
#define PCA INTA_PRIORITY /* PCI Ints */
#define PCB INTB_PRIORITY
#define PCC INTC_PRIORITY
#define PCD INTD_PRIORITY
#define SER TOP_PRIORITY
#define ERR TOP_PRIORITY
#define PW0 TOP_PRIORITY
#define PW1 TOP_PRIORITY
#define PW2 TOP_PRIORITY
#define PW3 TOP_PRIORITY
#define DM0 NO_PRIORITY /* DMA Ints */
#define DM1 NO_PRIORITY
#define DM2 NO_PRIORITY
#define DM3 NO_PRIORITY
#define DAE NO_PRIORITY
#define TU0 TIMER_PRIORITY /* TMU Ints */
#define TU1 NO_PRIORITY
#define TU2 NO_PRIORITY
#define TI2 NO_PRIORITY
#define ATI NO_PRIORITY /* RTC Ints */
#define PRI NO_PRIORITY
#define CUI RTC_PRIORITY
#define ERI SCIF_PRIORITY /* SCIF Ints */
#define RXI SCIF_PRIORITY
#define BRI SCIF_PRIORITY
#define TXI SCIF_PRIORITY
#define ITI TOP_PRIORITY /* WDT Ints */
/*
* Platform dependent structures: maps and parms block.
*/
struct resource io_resources[] = {
/* Nothing yet .. */
};
struct resource kram_resources[] = {
{ "Kernel code", 0, 0 }, /* These must be last in the array */
{ "Kernel data", 0, 0 } /* These must be last in the array */
};
struct resource xram_resources[] = {
/* Nothing yet .. */
};
struct resource rom_resources[] = {
/* Nothing yet .. */
};
struct sh64_platform platform_parms = {
.readonly_rootfs = 1,
.initial_root_dev = 0x0100,
.loader_type = 1,
.initrd_start = RAM_DISK_START,
.initrd_size = RAM_DISK_SIZE,
.io_res_p = io_resources,
.io_res_count = RES_COUNT(io_resources),
.kram_res_p = kram_resources,
.kram_res_count = RES_COUNT(kram_resources),
.xram_res_p = xram_resources,
.xram_res_count = RES_COUNT(xram_resources),
.rom_res_p = rom_resources,
.rom_res_count = RES_COUNT(rom_resources),
};
int platform_int_priority[NR_IRQS] = {
IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD, /* IRQ 0- 7 */
RES, RES, RES, RES, SER, ERR, PW3, PW2, /* IRQ 8-15 */
PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES, /* IRQ 16-23 */
RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 24-31 */
TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI, /* IRQ 32-39 */
RXI, BRI, TXI, RES, RES, RES, RES, RES, /* IRQ 40-47 */
RES, RES, RES, RES, RES, RES, RES, RES, /* IRQ 48-55 */
RES, RES, RES, RES, RES, RES, RES, ITI, /* IRQ 56-63 */
};
void __init platform_setup(void)
{
/* Simulator platform leaves the decision to head.S */
platform_parms.fpu_flags = fpu_in_use;
}
void __init platform_monitor(void)
{
/* Nothing yet .. */
}
void __init platform_reserve(void)
{
/* Nothing yet .. */
}
const char *get_system_type(void)
{
return "SH-5 Simulator";
}
