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Diffstat (limited to 'arch/sh64/mach-sim/setup.c')
| -rw-r--r-- | arch/sh64/mach-sim/setup.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/arch/sh64/mach-sim/setup.c b/arch/sh64/mach-sim/setup.c new file mode 100644 index 000000000000..a68639cb4e5a --- /dev/null +++ b/arch/sh64/mach-sim/setup.c @@ -0,0 +1,164 @@ +/* + * 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"; +} + |