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/*
* Boot ROM Entry Points and such
*/
/* These Blackfins all have a Boot ROM that is not reusable (at all):
* BF531 / BF532 / BF533
* BF538 / BF539
* BF561
* So there is nothing for us to export ;(
*
* These Blackfins started to roll with the idea that the Boot ROM can
* provide useful functions, but still only a few (and not really useful):
* BF534 / BF536 / BF537
*
* Looking forward, Boot ROM's on newer Blackfins have quite a few
* nice entry points that are usable at runtime and beyond. We'll
* only define known legacy parts (listed above) and otherwise just
* assume it's a newer part.
*
* These entry points are accomplished by placing a small jump table at
* the start of the Boot ROM. This way the addresses are fixed forever.
*/
#ifndef __BFIN_PERIPHERAL_BOOTROM__
#define __BFIN_PERIPHERAL_BOOTROM__
/* All Blackfin's have the Boot ROM entry point at the same address */
#define _BOOTROM_RESET 0xEF000000
#if defined(__ADSPBF531__) || defined(__ADSPBF532__) || defined(__ADSPBF533__) || \
defined(__ADSPBF538__) || defined(__ADSPBF539__) || \
defined(__ADSPBF561__)
/* Nothing to export */
#elif defined(__ADSPBF534__) || defined(__ADSPBF536__) || defined(__ADSPBF537__)
/* The BF537 family */
#define _BOOTROM_FINAL_INIT 0xEF000002
/* reserved 0xEF000004 */
#define _BOOTROM_DO_MEMORY_DMA 0xEF000006
#define _BOOTROM_BOOT_DXE_FLASH 0xEF000008
#define _BOOTROM_BOOT_DXE_SPI 0xEF00000A
#define _BOOTROM_BOOT_DXE_TWI 0xEF00000C
/* reserved 0xEF00000E */
#define _BOOTROM_GET_DXE_ADDRESS_FLASH 0xEF000010
#define _BOOTROM_GET_DXE_ADDRESS_SPI 0xEF000012
#define _BOOTROM_GET_DXE_ADDRESS_TWI 0xEF000014
/* reserved 0xEF000016 */
/* reserved 0xEF000018 */
/* Glue to newer Boot ROMs */
#define _BOOTROM_MDMA _BOOTROM_DO_MEMORY_DMA
#define _BOOTROM_MEMBOOT _BOOTROM_BOOT_DXE_FLASH
#define _BOOTROM_SPIBOOT _BOOTROM_BOOT_DXE_FLASH
#define _BOOTROM_TWIBOOT _BOOTROM_BOOT_DXE_TWI
#else
/* All the newer Boot ROMs */
#define _BOOTROM_FINAL_INIT 0xEF000002
#define _BOOTROM_PDMA 0xEF000004
#define _BOOTROM_MDMA 0xEF000006
#define _BOOTROM_MEMBOOT 0xEF000008
#define _BOOTROM_SPIBOOT 0xEF00000A
#define _BOOTROM_TWIBOOT 0xEF00000C
/* reserved 0xEF00000E */
/* reserved 0xEF000010 */
/* reserved 0xEF000012 */
/* reserved 0xEF000014 */
/* reserved 0xEF000016 */
#define _BOOTROM_OTP_COMMAND 0xEF000018
#define _BOOTROM_OTP_READ 0xEF00001A
#define _BOOTROM_OTP_WRITE 0xEF00001C
#define _BOOTROM_ECC_TABLE 0xEF00001E
#define _BOOTROM_BOOTKERNEL 0xEF000020
#define _BOOTROM_GETPORT 0xEF000022
#define _BOOTROM_NMI 0xEF000024
#define _BOOTROM_HWERROR 0xEF000026
#define _BOOTROM_EXCEPTION 0xEF000028
#define _BOOTROM_CRC32 0xEF000030
#define _BOOTROM_CRC32POLY 0xEF000032
#define _BOOTROM_CRC32CALLBACK 0xEF000034
#define _BOOTROM_CRC32INITCODE 0xEF000036
#define _BOOTROM_SYSCONTROL 0xEF000038
#define _BOOTROM_REV 0xEF000040
#define _BOOTROM_SESR 0xEF001000
#define BOOTROM_FOLLOWS_C_ABI 1
#define BOOTROM_CAPS_ADI_BOOT_STRUCTS 1
#endif
#ifndef BOOTROM_FOLLOWS_C_ABI
#define BOOTROM_FOLLOWS_C_ABI 0
#endif
#ifndef BOOTROM_CAPS_ADI_BOOT_STRUCTS
#define BOOTROM_CAPS_ADI_BOOT_STRUCTS 0
#endif
/* 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 */
#ifndef __ASSEMBLY__
#if BOOTROM_FOLLOWS_C_ABI
# define BOOTROM_CALLED_FUNC_ATTR
#else
# define BOOTROM_CALLED_FUNC_ATTR __attribute__((saveall))
#endif
/* Structures for the syscontrol() function */
typedef struct ADI_SYSCTRL_VALUES {
uint16_t uwVrCtl;
uint16_t uwPllCtl;
uint16_t uwPllDiv;
uint16_t uwPllLockCnt;
uint16_t uwPllStat;
} ADI_SYSCTRL_VALUES;
#ifndef _BOOTROM_SYSCONTROL
#define _BOOTROM_SYSCONTROL 0
#endif
static uint32_t (* const bfrom_SysControl)(uint32_t action_flags, ADI_SYSCTRL_VALUES *power_settings, void *reserved) = (void *)_BOOTROM_SYSCONTROL;
/* 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)
__asm__ __volatile__(
"sp = %[stack];"
"jump (%[bfrom_syscontrol]);"
: : [bfrom_syscontrol] "p"(bfrom_SysControl),
"q0"(SYSCTRL_SOFTRESET),
"q1"(0),
"q2"(NULL),
[stack] "p"(new_stack)
);
}
/* Structures for working with LDRs and boot rom callbacks */
typedef struct ADI_BOOT_HEADER {
int32_t dBlockCode;
void *pTargetAddress;
int32_t dByteCount;
int32_t dArgument;
} ADI_BOOT_HEADER;
typedef struct ADI_BOOT_BUFFER {
void *pSource;
int32_t dByteCount;
} ADI_BOOT_BUFFER;
typedef struct ADI_BOOT_DATA {
void *pSource;
void *pDestination;
int16_t *pControlRegister;
int16_t *pDmaControlRegister;
int32_t dControlValue;
int32_t dByteCount;
int32_t dFlags;
int16_t uwDataWidth;
int16_t uwSrcModifyMult;
int16_t uwDstModifyMult;
int16_t uwHwait;
int16_t uwSsel;
int16_t uwUserShort;
int32_t dUserLong;
int32_t dReserved2;
void *pErrorFunction;
void *pLoadFunction;
void *pCallBackFunction;
ADI_BOOT_HEADER *pHeader;
void *pTempBuffer;
void *pTempCurrent;
int32_t dTempByteCount;
int32_t dBlockCount;
int32_t dClock;
void *pLogBuffer;
void *pLogCurrent;
int32_t dLogByteCount;
} ADI_BOOT_DATA;
#endif /* __ASSEMBLY__ */
/* Bit defines for ADI_BOOT_DATA->dFlags */
#define BFLAG_DMACODE_MASK 0x0000000F
#define BFLAG_SAFE 0x00000010
#define BFLAG_AUX 0x00000020
#define BFLAG_FILL 0x00000100
#define BFLAG_QUICKBOOT 0x00000200
#define BFLAG_CALLBACK 0x00000400
#define BFLAG_INIT 0x00000800
#define BFLAG_IGNORE 0x00001000
#define BFLAG_INDIRECT 0x00002000
#define BFLAG_FIRST 0x00004000
#define BFLAG_FINAL 0x00008000
#define BFLAG_HOOK 0x00400000
#define BFLAG_HDRINDIRECT 0x00800000
#define BFLAG_TYPE_MASK 0x00300000
#define BFLAG_TYPE_1 0x00000000
#define BFLAG_TYPE_2 0x00100000
#define BFLAG_TYPE_3 0x00200000
#define BFLAG_TYPE_4 0x00300000
#define BFLAG_FASTREAD 0x00400000
#define BFLAG_NOAUTO 0x01000000
#define BFLAG_PERIPHERAL 0x02000000
#define BFLAG_SLAVE 0x04000000
#define BFLAG_WAKEUP 0x08000000
#define BFLAG_NEXTDXE 0x10000000
#define BFLAG_RETURN 0x20000000
#define BFLAG_RESET 0x40000000
#define BFLAG_NONRESTORE 0x80000000
#endif
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