Merge branch 'linus' into core/futexes
[sfrench/cifs-2.6.git] / arch / blackfin / include / asm / bfrom.h
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)
46                 __asm__ __volatile__(
47                         "sp = %[stack];"
48                         "jump (%[bfrom_syscontrol]);"
49                         : : [bfrom_syscontrol] "p"(bfrom_SysControl),
50                                 "q0"(SYSCTRL_SOFTRESET),
51                                 "q1"(0),
52                                 "q2"(NULL),
53                                 [stack] "p"(new_stack)
54                 );
55 }
56
57 /* OTP Functions */
58 static uint32_t (* const bfrom_OtpCommand)(uint32_t command, uint32_t value) = (void *)0xEF000018;
59 static uint32_t (* const bfrom_OtpRead)(uint32_t page, uint32_t flags, uint64_t *page_content) = (void *)0xEF00001A;
60 static uint32_t (* const bfrom_OtpWrite)(uint32_t page, uint32_t flags, uint64_t *page_content) = (void *)0xEF00001C;
61
62 /* otp command: defines for "command" */
63 #define OTP_INIT                 0x00000001
64 #define OTP_CLOSE                0x00000002
65
66 /* otp read/write: defines for "flags" */
67 #define OTP_LOWER_HALF           0x00000000 /* select upper/lower 64-bit half (bit 0) */
68 #define OTP_UPPER_HALF           0x00000001
69 #define OTP_NO_ECC               0x00000010 /* do not use ECC */
70 #define OTP_LOCK                 0x00000020 /* sets page protection bit for page */
71 #define OTP_CHECK_FOR_PREV_WRITE 0x00000080
72
73 /* Return values for all functions */
74 #define OTP_SUCCESS          0x00000000
75 #define OTP_MASTER_ERROR     0x001
76 #define OTP_WRITE_ERROR      0x003
77 #define OTP_READ_ERROR       0x005
78 #define OTP_ACC_VIO_ERROR    0x009
79 #define OTP_DATA_MULT_ERROR  0x011
80 #define OTP_ECC_MULT_ERROR   0x021
81 #define OTP_PREV_WR_ERROR    0x041
82 #define OTP_DATA_SB_WARN     0x100
83 #define OTP_ECC_SB_WARN      0x200
84
85 #endif