cpu_startup.h

QNX ADS BSP code for i.MX27 chips

/*
 * $QNXLicenseC: 
 * Copyright 2007, QNX Software Systems.  
 *  
 * Licensed under the Apache License, Version 2.0 (the "License"). You  
 * may not reproduce, modify or distribute this software except in  
 * compliance with the License. You may obtain a copy of the License  
 * at: http://www.apache.org/licenses/LICENSE-2.0  
 *  
 * Unless required by applicable law or agreed to in writing, software  
 * distributed under the License is distributed on an "AS IS" basis,  
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied. 
 * 
 * This file may contain contributions from others, either as  
 * contributors under the License or as licensors under other terms.   
 * Please review this entire file for other proprietary rights or license  
 * notices, as well as the QNX Development Suite License Guide at  
 * http://licensing.qnx.com/license-guide/ for other information. 
 * $
 */


#include <arm/inout.h>
#include <arm/inline.h>
#include <arm/mmu.h>

/********************************************************************
*********************************************************************

	These definitions are required for the system independent code.

*********************************************************************
********************************************************************/

#define KERCALL_SEQUENCE(name)	uint32_t name[] = {			\
			0xef000000,		/* swi (syscall no. in ip)	*/	\
			0xe7ffffff		/* undefined instruction	*/	\
}

#define CPU_SYSPAGE_TYPE	SYSPAGE_ARM

struct cpu_local_syspage {
	SYSPAGE_SECTION(arm_boxinfo);
	SYSPAGE_SECTION(arm_cpu);
};

extern void print_arm_boxinfo(void);
extern void print_arm_cpu(void);

#define CPU_PRT_SYSPAGE_RTNS					\
	CPU_PRT_SYSPAGE_RTN(arm, 1, boxinfo),		\
	CPU_PRT_SYSPAGE_RTN(arm, 1, cpu),

#define BOOTSTRAPS_RUN_ONE_TO_ONE	0

#define CPU_COMMON_OPTIONS_STRING	"w:"

/********************************************************************
*********************************************************************

	Everything below is specific to the ARM.

*********************************************************************
********************************************************************/

/*
 * ------------------------------------------------------------------
 * Generic ARM support
 * ------------------------------------------------------------------
 */
extern unsigned long	arm_cpuspeed();
extern paddr_t			arm_map(uintptr_t va, paddr_t pa, size_t sz, int flags);
extern void				arm_ptmap(paddr_t pt, uintptr_t va);
extern void				arm_scmap(paddr_t va, paddr_t pa, int flags);

extern unsigned			trap_vectors;
extern unsigned			mmu_control;
extern int				cycles_per_loop;
extern paddr_t			L1_paddr;
extern paddr_t			L1_vaddr;
extern paddr_t			L2_paddr;
extern paddr_t			startup_base;
extern unsigned			startup_size;

/*
 * CPU cache configuration used if there is no CP15 cache type register
 */
struct arm_cache_config {
	unsigned					flags;
	unsigned					line_size;
	unsigned					num_lines;
};

/*
 * CPU cache callout and configuration
 */
struct arm_cache_info {
	const struct arm_cache_config	*dcache_config;
	const struct callout_rtn		*dcache_rtn;
	const struct arm_cache_config	*icache_config;
	const struct callout_rtn		*icache_rtn;
};

/*
 * MMU PTE details
 */
struct arm_pte_info {
	unsigned short		upte_ro;	// user RO mappings
	unsigned short		upte_rw;	// user RW mappings
	unsigned short		kpte_ro;	// kern RO mappings
	unsigned short		kpte_rw;	// kern RW mappings
	unsigned short		mask_nc;	// bits to clear for uncached mappings
};

extern const struct arm_pte_info	*arm_pte_info;
extern const struct arm_pte_info	armv4_pte_info;
extern const struct arm_pte_info	armv5_wa_pte_info;
extern const struct arm_pte_info	armv5_wb_pte_info;
extern const struct arm_pte_info	armv5_wt_pte_info;
extern const struct arm_pte_info	ixp2400_pte_info;

/*
 * CPU core details
 */
struct arm_core_config {
	unsigned					mmu_cr;		// additional CP15 C0 values
	int							cycles;		// cycles per arm_cpuspeed() loop
	const struct arm_cache_info	*cache;		// cache configuration
	const struct callout_rtn	*power;		// idle callout
	const struct callout_rtn	*flush;		// page_flush callout
	const struct callout_rtn	*deferred;	// page_flush_deferred callout
	const struct arm_pte_info	*pte;		// page table entries
};

/*
 * CPU core info
 */
struct arm_core_info {
	unsigned						cpuid;		// bits 4-15 of CP15 C1
	const char						*name;
	const struct arm_core_config	*config;
	void							(*extra_init)(struct cpuinfo_entry *cpu, unsigned cpuid);
};

extern const struct arm_core_info *	arm_core_detect();
extern void		arm_add_cache(struct cpuinfo_entry *cpu, const struct arm_cache_info *cache);
extern void		arm_get_pte_info();
extern int		arm_altpte;

/*
 * ------------------------------------------------------------------
 * SA-1100/1110 Processor Support
 * ------------------------------------------------------------------
 */
extern void	init_sa1100(unsigned, const char *, const char *);
extern void	put_sa1100(int);
extern void	init_qtime_sa1100(void);

extern unsigned				sa11x1_base;
extern unsigned				sa1100_grer;
extern unsigned				sa1100_gfer;

extern struct callout_rtn	reboot_sa1100;
extern struct callout_rtn	power_sa1100;

extern struct callout_rtn	interrupt_id_sa1100;
extern struct callout_rtn	interrupt_eoi_sa1100;
extern struct callout_rtn	interrupt_mask_sa1100;
extern struct callout_rtn	interrupt_unmask_sa1100;
extern struct callout_rtn	interrupt_id_sa1100_gpio;
extern struct callout_rtn	interrupt_eoi_sa1100_gpio;
extern struct callout_rtn	interrupt_mask_sa1100_gpio;
extern struct callout_rtn	interrupt_unmask_sa1100_gpio;

extern struct callout_rtn	display_char_sa1100;
extern struct callout_rtn	poll_key_sa1100;
extern struct callout_rtn	break_detect_sa1100;


extern struct callout_rtn	timer_load_sa1100;
extern struct callout_rtn	timer_value_sa1100;
extern struct callout_rtn	timer_reload_sa1100;

extern struct callout_rtn	cache_sa_i;
extern struct callout_rtn	cache_sa_d;

extern struct callout_rtn	page_flush_sa;
extern struct callout_rtn	page_flush_deferred_sa;

extern struct callout_rtn	interrupt_id_sa1101;
extern struct callout_rtn	interrupt_eoi_sa1101;
extern struct callout_rtn	interrupt_mask_sa1101;
extern struct callout_rtn	interrupt_unmask_sa1101;

extern struct callout_rtn	interrupt_id_sa1111;
extern struct callout_rtn	interrupt_eoi_sa1111;
extern struct callout_rtn	interrupt_mask_sa1111;
extern struct callout_rtn	interrupt_unmask_sa1111;

extern const struct arm_cache_config	sa11x0_dcache_config;
extern const struct arm_cache_config	sa11x0_icache_config;
extern const struct arm_cache_info		sa11x0_cache;
extern const struct arm_core_config		sa11x0_config;

extern unsigned long		rtc_time_sa1100(unsigned);

/*
 * ------------------------------------------------------------------
 * Xscale processor support
 * ------------------------------------------------------------------
 */
extern struct callout_rtn	power_xscale;

extern struct callout_rtn	cache_sa2_i;
extern struct callout_rtn	cache_sa2_d;

extern struct callout_rtn	page_flush_sa2;
extern struct callout_rtn	page_flush_deferred_sa2;

extern const struct arm_cache_info	xscale_cache;
extern const struct arm_core_config	xscale_errata_config;
extern const struct arm_core_config	xscale_config;

extern void		xscale_extra_init(struct cpuinfo_entry *, unsigned);

extern unsigned long		rtc_time_pxa250(unsigned);

/*
 * ------------------------------------------------------------------
 * ARM720T processor support
 * ------------------------------------------------------------------
 */
extern struct callout_rtn	cache_720;

extern struct callout_rtn	page_flush_720;
extern struct callout_rtn	page_flush_deferred_720;

extern const struct arm_cache_config	arm720_cache_config;
extern const struct arm_cache_info		arm720_cache;
extern const struct arm_core_config		arm720_config;

/*
 * ------------------------------------------------------------------
 * ARM920T processor support
 * ------------------------------------------------------------------
 */
extern struct callout_rtn	power_920;

extern struct callout_rtn	cache_920_i;
extern struct callout_rtn	cache_920_d;

extern struct callout_rtn	page_flush_920;
extern struct callout_rtn	page_flush_deferred_920;

extern const struct arm_cache_info	arm92x_cache;
extern const struct arm_core_config	arm92x_config;

extern void		arm920_extra_init(struct cpuinfo_entry *, unsigned);

extern struct callout_rtn	cache_925_i;
extern struct callout_rtn	cache_925_d;

extern struct callout_rtn	page_flush_925;
extern struct callout_rtn	page_flush_deferred_925;

extern const struct arm_cache_info	arm925_cache;
extern const struct arm_core_config	arm925_config;

/*
 * ------------------------------------------------------------------
 * ARM1020T processor support
 * ------------------------------------------------------------------
 */
extern struct callout_rtn	cache_1020_i;
extern struct callout_rtn	cache_1020_d;

extern struct callout_rtn	page_flush_1020;
extern struct callout_rtn	page_flush_deferred_1020;

extern const struct arm_cache_info	arm102x_cache;
extern const struct arm_core_config	arm102x_config;

/*
 * ------------------------------------------------------------------
 * PrimeCell UART/RTC support
 * ------------------------------------------------------------------
 */
extern void	init_primecell(unsigned, const char *, const char *);
extern void	put_primecell(int);

extern struct callout_rtn	display_char_primecell;
extern struct callout_rtn	poll_key_primecell;
extern struct callout_rtn	break_detect_primecell;

extern unsigned long		rtc_time_primecell(unsigned);

/*
 * ------------------------------------------------------------------
 * PXA250 support
 * ------------------------------------------------------------------
 */
extern void	init_pxa250(unsigned, const char *, const char *);
extern void	put_pxa250(int);
extern void	init_qtime_pxa250(void);

extern struct callout_rtn	display_char_pxa250;
extern struct callout_rtn	poll_key_pxa250;
extern struct callout_rtn	break_detect_pxa250;

extern struct callout_rtn	timer_load_pxa250;
extern struct callout_rtn	timer_value_pxa250;
extern struct callout_rtn	timer_reload_pxa250;

extern struct callout_rtn	interrupt_id_pxa250;
extern struct callout_rtn	interrupt_eoi_pxa250;
extern struct callout_rtn	interrupt_mask_pxa250;
extern struct callout_rtn	interrupt_unmask_pxa250;
extern struct callout_rtn	interrupt_id_pxa250_gpio;
extern struct callout_rtn	interrupt_eoi_pxa250_gpio;
extern struct callout_rtn	interrupt_mask_pxa250_gpio;
extern struct callout_rtn	interrupt_unmask_pxa250_gpio;

/*
 * ------------------------------------------------------------------
 * PXA270 support
 * ------------------------------------------------------------------