[linux-2.6-block.git] / arch / blackfin / include / asm / bfrom.h

/* Blackfin on-chip ROM API
 *
 * Copyright 2008 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#ifndef __BFROM_H__
#define __BFROM_H__

#include <linux/types.h>

/* Possible syscontrol action flags */
#define SYSCTRL_READ        0x00000000    /* read registers */
#define SYSCTRL_WRITE       0x00000001    /* write registers */
#define SYSCTRL_SYSRESET    0x00000002    /* perform system reset */
#define SYSCTRL_CORERESET   0x00000004    /* perform core reset */
#define SYSCTRL_SOFTRESET   0x00000006    /* perform core and system reset */
#define SYSCTRL_VRCTL       0x00000010    /* read/write VR_CTL register */
#define SYSCTRL_EXTVOLTAGE  0x00000020    /* VDDINT supplied externally */
#define SYSCTRL_INTVOLTAGE  0x00000000    /* VDDINT generated by on-chip regulator */
#define SYSCTRL_OTPVOLTAGE  0x00000040    /* For Factory Purposes Only */
#define SYSCTRL_PLLCTL      0x00000100    /* read/write PLL_CTL register */
#define SYSCTRL_PLLDIV      0x00000200    /* read/write PLL_DIV register */
#define SYSCTRL_LOCKCNT     0x00000400    /* read/write PLL_LOCKCNT register */
#define SYSCTRL_PLLSTAT     0x00000800    /* read/write PLL_STAT register */

typedef struct ADI_SYSCTRL_VALUES {
	uint16_t uwVrCtl;
	uint16_t uwPllCtl;
	uint16_t uwPllDiv;
	uint16_t uwPllLockCnt;
	uint16_t uwPllStat;
} ADI_SYSCTRL_VALUES;

static uint32_t (* const bfrom_SysControl)(uint32_t action_flags, ADI_SYSCTRL_VALUES *power_settings, void *reserved) = (void *)0xEF000038;

/* We need a dedicated function since we need to screw with the stack pointer
 * when resetting.  The on-chip ROM will save/restore registers on the stack
 * when doing a system reset, so the stack cannot be outside of the chip.
 */
__attribute__((__noreturn__))
static inline void bfrom_SoftReset(void *new_stack)
{
	while (1)
		/*
		 * We don't declare the SP as clobbered on purpose, since
		 * it confuses the heck out of the compiler, and this function
		 * never returns
		 */
		__asm__ __volatile__(
			"sp = %[stack];"
			"jump (%[bfrom_syscontrol]);"
			: : [bfrom_syscontrol] "p"(bfrom_SysControl),
				"q0"(SYSCTRL_SOFTRESET),
				"q1"(0),
				"q2"(NULL),
				[stack] "p"(new_stack)
		);
}

/* OTP Functions */
static uint32_t (* const bfrom_OtpCommand)(uint32_t command, uint32_t value) = (void *)0xEF000018;
static uint32_t (* const bfrom_OtpRead)(uint32_t page, uint32_t flags, uint64_t *page_content) = (void *)0xEF00001A;
static uint32_t (* const bfrom_OtpWrite)(uint32_t page, uint32_t flags, uint64_t *page_content) = (void *)0xEF00001C;

/* otp command: defines for "command" */
#define OTP_INIT                 0x00000001
#define OTP_CLOSE                0x00000002

/* otp read/write: defines for "flags" */
#define OTP_LOWER_HALF           0x00000000 /* select upper/lower 64-bit half (bit 0) */
#define OTP_UPPER_HALF           0x00000001
#define OTP_NO_ECC               0x00000010 /* do not use ECC */
#define OTP_LOCK                 0x00000020 /* sets page protection bit for page */
#define OTP_CHECK_FOR_PREV_WRITE 0x00000080

/* Return values for all functions */
#define OTP_SUCCESS          0x00000000
#define OTP_MASTER_ERROR     0x001
#define OTP_WRITE_ERROR      0x003
#define OTP_READ_ERROR       0x005
#define OTP_ACC_VIO_ERROR    0x009
#define OTP_DATA_MULT_ERROR  0x011
#define OTP_ECC_MULT_ERROR   0x021
#define OTP_PREV_WR_ERROR    0x041
#define OTP_DATA_SB_WARN     0x100
#define OTP_ECC_SB_WARN      0x200

#endif
Commit	Line	Data
cdbf4c3c MF	1	/* Blackfin on-chip ROM API
	2	*
	3	* Copyright 2008 Analog Devices Inc.
	4	*
	5	* Licensed under the GPL-2 or later.
	6	*/
	7
	8	#ifndef __BFROM_H__
	9	#define __BFROM_H__
	10
	11	#include <linux/types.h>
	12
	13	/* Possible syscontrol action flags */
	14	#define SYSCTRL_READ 0x00000000 /* read registers */
	15	#define SYSCTRL_WRITE 0x00000001 /* write registers */
	16	#define SYSCTRL_SYSRESET 0x00000002 /* perform system reset */
	17	#define SYSCTRL_CORERESET 0x00000004 /* perform core reset */
	18	#define SYSCTRL_SOFTRESET 0x00000006 /* perform core and system reset */
	19	#define SYSCTRL_VRCTL 0x00000010 /* read/write VR_CTL register */
	20	#define SYSCTRL_EXTVOLTAGE 0x00000020 /* VDDINT supplied externally */
	21	#define SYSCTRL_INTVOLTAGE 0x00000000 /* VDDINT generated by on-chip regulator */
	22	#define SYSCTRL_OTPVOLTAGE 0x00000040 /* For Factory Purposes Only */
	23	#define SYSCTRL_PLLCTL 0x00000100 /* read/write PLL_CTL register */
	24	#define SYSCTRL_PLLDIV 0x00000200 /* read/write PLL_DIV register */
	25	#define SYSCTRL_LOCKCNT 0x00000400 /* read/write PLL_LOCKCNT register */
	26	#define SYSCTRL_PLLSTAT 0x00000800 /* read/write PLL_STAT register */
	27
	28	typedef struct ADI_SYSCTRL_VALUES {
	29	uint16_t uwVrCtl;
	30	uint16_t uwPllCtl;
	31	uint16_t uwPllDiv;
	32	uint16_t uwPllLockCnt;
	33	uint16_t uwPllStat;
	34	} ADI_SYSCTRL_VALUES;
	35
	36	static uint32_t (* const bfrom_SysControl)(uint32_t action_flags, ADI_SYSCTRL_VALUES power_settings, void reserved) = (void *)0xEF000038;
	37
	38	/* We need a dedicated function since we need to screw with the stack pointer
	39	* when resetting. The on-chip ROM will save/restore registers on the stack
	40	* when doing a system reset, so the stack cannot be outside of the chip.
	41	*/
	42	__attribute__((__noreturn__))
	43	static inline void bfrom_SoftReset(void *new_stack)
	44	{
	45	while (1)
26fe19f7 RG	46	/*
	47	* We don't declare the SP as clobbered on purpose, since
	48	* it confuses the heck out of the compiler, and this function
	49	* never returns
	50	*/
cdbf4c3c MF	51	__asm__ __volatile__(
	52	"sp = %[stack];"
	53	"jump (%[bfrom_syscontrol]);"
	54	: : [bfrom_syscontrol] "p"(bfrom_SysControl),
	55	"q0"(SYSCTRL_SOFTRESET),
	56	"q1"(0),
	57	"q2"(NULL),
	58	[stack] "p"(new_stack)
	59	);
	60	}
	61
	62	/* OTP Functions */
	63	static uint32_t (* const bfrom_OtpCommand)(uint32_t command, uint32_t value) = (void *)0xEF000018;
	64	static uint32_t (* const bfrom_OtpRead)(uint32_t page, uint32_t flags, uint64_t page_content) = (void )0xEF00001A;
	65	static uint32_t (* const bfrom_OtpWrite)(uint32_t page, uint32_t flags, uint64_t page_content) = (void )0xEF00001C;
	66
	67	/* otp command: defines for "command" */
	68	#define OTP_INIT 0x00000001
	69	#define OTP_CLOSE 0x00000002
	70
	71	/* otp read/write: defines for "flags" */
	72	#define OTP_LOWER_HALF 0x00000000 /* select upper/lower 64-bit half (bit 0) */
	73	#define OTP_UPPER_HALF 0x00000001
	74	#define OTP_NO_ECC 0x00000010 /* do not use ECC */
	75	#define OTP_LOCK 0x00000020 /* sets page protection bit for page */
	76	#define OTP_CHECK_FOR_PREV_WRITE 0x00000080
	77
	78	/* Return values for all functions */
	79	#define OTP_SUCCESS 0x00000000
	80	#define OTP_MASTER_ERROR 0x001
	81	#define OTP_WRITE_ERROR 0x003
	82	#define OTP_READ_ERROR 0x005
	83	#define OTP_ACC_VIO_ERROR 0x009
	84	#define OTP_DATA_MULT_ERROR 0x011
	85	#define OTP_ECC_MULT_ERROR 0x021
	86	#define OTP_PREV_WR_ERROR 0x041
	87	#define OTP_DATA_SB_WARN 0x100
	88	#define OTP_ECC_SB_WARN 0x200
	89
	90	#endif