diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/efi332/start/start.c')
-rw-r--r-- | c/src/lib/libbsp/m68k/efi332/start/start.c | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/c/src/lib/libbsp/m68k/efi332/start/start.c b/c/src/lib/libbsp/m68k/efi332/start/start.c deleted file mode 100644 index 20ad83bea2..0000000000 --- a/c/src/lib/libbsp/m68k/efi332/start/start.c +++ /dev/null @@ -1,228 +0,0 @@ -/* - * $Id - */ - -#include <efi332.h> -#include <sim.h> -#define __START_C__ -#include "bsp.h" - -m68k_isr_entry M68Kvec[256]; -m68k_isr_entry vectors[256]; -char * const __argv[]= {"main", ""}; - -void boot_card(int argc, char * const argv[]); - -/* - * This prototype really should have the noreturn attribute but - * that causes a warning. Not sure how to fix that. - */ -/* void dumby_start () __attribute__ ((noreturn)); */ -void dumby_start (); - -void dumby_start() { - - /* We need to by-pass the link instruction since the RAM chip- - select pins are not yet configured. */ - asm volatile ( ".global start ;\n\ - start:"); - - /* disable interrupts, load stack pointer */ - asm volatile ( "oriw #0x0700, %sr;\n\ - moveal #M68Kvec, %a0;\n\ - movec %a0, %vbr;\n\ - movel #end, %d0;\n\ - addl " STACK_SIZE ",%d0;\n\ - movel %d0,%sp;\n\ - movel %d0,%a6" - ); - - /* include in ram_init.S */ - /* - * Initalize the SIM module. - * The stack pointer is not usable until the RAM chip select lines - * are configured. The following code must remain inline. - */ - - /* Module Configuration Register */ - /* see section(s) 3.1.3-3.1.6 of the SIM Reference Manual */ - *SIMCR = (unsigned short int) - (FRZSW | FRZBM | SAM(0,8,SHEN) | (MM*SIM_MM) | SAM(SIM_IARB,0,IARB)); - - /* Synthesizer Control Register */ - /* see section(s) 4.8 */ - /* end include in ram_init.S */ - *SYNCR = (unsigned short int) - ( SAM(EFI_W,15,VCO) | SAM(0x0,14,PRESCALE) | SAM(EFI_Y,8,COUNTER) | STSIM ); - while (! (*SYNCR & SLOCK)); /* protect from clock overshoot */ - /* include in ram_init.S */ - *SYNCR = (unsigned short int) - ( SAM(EFI_W,15,VCO) | SAM(EFI_X,14,PRESCALE) | SAM(EFI_Y,8,COUNTER) | STSIM ); - - /* System Protection Control Register */ - /* !!! can only write to once after reset !!! */ - /* see section 3.8.4 of the SIM Reference Manual */ - *SYPCR = (unsigned char)( SAM(0x3,4,SWT) | HME | BME ); - - /* Periodic Interrupr Control Register */ - /* see section 3.8.2 of the SIM Reference Manual */ - *PICR = (unsigned short int) - ( SAM(0,8,PIRQL) | SAM(EFI_PIV,0,PIV) ); - /* ^^^ zero disables interrupt, don't enable here or ram_init will - be wrong. It's enabled below. */ - - /* Periodic Interrupt Timer Register */ - /* see section 3.8.3 of the SIM Reference Manual */ - *PITR = (unsigned short int)( SAM(0x09,0,PITM) ); - /* 1.098mS interrupt */ - - /* Port C Data */ - /* load values before enabled */ - *PORTC = (unsigned char) 0x0; - - /* Chip-Select Base Address Register */ - /* see section 7 of the SIM Reference Manual */ - *CSBARBT = (unsigned short int) - (((0x000000 >> 8)&0xfff8) | BS_512K ); /* 512k bytes located at 0x0000 */ - *CSBAR0 = (unsigned short int) - (((0x000000 >> 8)&0xfff8) | BS_1M ); /* 1M bytes located at 0x0000 */ - *CSBAR1 = (unsigned short int) - (((0x080000 >> 8)&0xfff8) | BS_256K ); /* 256k bytes located at 0x80000 */ - *CSBAR2 = (unsigned short int) - (((0x080000 >> 8)&0xfff8) | BS_256K ); /* 256k bytes located at 0x80000 */ - *CSBAR3 = (unsigned short int) - (((0x0C0000 >> 8)&0xfff8) | BS_256K ); /* 256k bytes located at 0xC0000 */ - *CSBAR4 = (unsigned short int) - (((0x0C0000 >> 8)&0xfff8) | BS_256K ); /* 256k bytes located at 0xC0000 */ - *CSBAR5 = (unsigned short int) - (0xfff8 | BS_64K); /* AVEC interrupts */ -#ifdef EFI332_v040b - *CSBAR6 = (unsigned short int) - (((0x000000 >> 8)&0xfff8) | BS_512K ); /* 512k bytes located at 0x0000 */ - *CSBAR8 = (unsigned short int) /* PCMCIA IOCS */ - (((0x0c0000 >> 8)&0xfff8) | BS_64K ); /* 64k bytes located at 0xc0000 */ - *CSBAR9 = (unsigned short int) /* PCMCIA MEMCS */ - (((0x0D0000 >> 8)&0xfff8) | BS_64K ); /* 64k bytes located at 0xd0000 */ -#else /* EFI332_v040b */ - *CSBAR10 = (unsigned short int) - (((0x000000 >> 8)&0xfff8) | BS_512K ); /* 512k bytes located at 0x0000 */ -#endif /* EFI332_v040b */ - - /* Chip-Select Options Registers */ - /* see section 7 of the SIM Reference Manual */ -#ifdef FLASHWRITE - *CSORBT = (unsigned short int) - ( BothBytes | ReadWrite | SyncAS | WaitStates_2 | UserSupSpace ); -#else /* FLASHWRITE */ - *CSORBT = (unsigned short int) - ( BothBytes | ReadOnly | SyncAS | WaitStates_0 | UserSupSpace ); -#endif /* FLASHWRITE */ - *CSOR0 = (unsigned short int) - ( BothBytes | ReadOnly | SyncAS | External | UserSupSpace ); - *CSOR1 = (unsigned short int) - ( LowerByte | ReadWrite | SyncAS | FastTerm | UserSupSpace ); - *CSOR2 = (unsigned short int) - ( UpperByte | ReadWrite | SyncAS | FastTerm | UserSupSpace ); - *CSOR3 = (unsigned short int) - ( LowerByte | ReadWrite | SyncAS | FastTerm | UserSupSpace ); - *CSOR4 = (unsigned short int) - ( UpperByte | ReadWrite | SyncAS | FastTerm | UserSupSpace ); - *CSOR5 = (unsigned short int) - ( BothBytes | ReadWrite | SyncAS | CPUSpace | IPLevel_any | AVEC ); -#ifdef EFI332_v040b - *CSOR6 = (unsigned short int) - ( BothBytes | ReadOnly | SyncAS | External | UserSupSpace ); - *CSOR8 = (unsigned short int) - ( BothBytes | ReadWrite | SyncAS | External | UserSupSpace ); - *CSOR9 = (unsigned short int) - ( BothBytes | ReadWrite | SyncAS | External | UserSupSpace ); -#else /* EFI332_v040b */ - *CSOR10 = (unsigned short int) - ( BothBytes | ReadOnly | SyncAS | External | UserSupSpace ); -#endif /* EFI332_v040b */ - - /* Chip Select Pin Assignment Register 0 */ - /* see section 7 of the SIM Reference Manual */ - *CSPAR0 = (unsigned short int)( - SAM(DisOut,CS_5,0x3000) | /* AVEC (internally) */ - SAM(CS16bit,CS_4,0x0c00) | /* RAM UDS, bank2 */ - SAM(CS16bit,CS_3,0x0300) | /* RAM LDS, bank2 */ - SAM(CS16bit,CS_2,0x00c0)| /* RAM UDS, bank1 */ - SAM(CS16bit,CS_1,0x0030)| /* RAM LDS, bank1 */ - SAM(CS16bit,CS_0,0x000c)| /* W/!R */ - SAM(CS16bit,CSBOOT,0x0003) /* ROM CS */ - ); - - /* Chip Select Pin Assignment Register 1 */ - /* see section 7 of the SIM Reference Manual */ -#ifdef EFI332_v040b - *CSPAR1 = (unsigned short int)( - SAM(DisOut,CS_10,0x300)| /* ECLK */ - SAM(CS16bit,CS_9,0x0c0) | /* PCMCIA MEMCS */ - SAM(CS16bit,CS_8,0x030) | /* PCMCIA IOCS */ - SAM(DisOut,CS_7,0x00c) | /* PC4 */ - SAM(CS16bit,CS_6,0x003) /* ROM !OE */ - ); -#else /* EFI332_v040b */ - *CSPAR1 = (unsigned short int)( - SAM(CS16bit,CS_10,0x300)| /* ROM !OE */ - SAM(DisOut,CS_9,0x0c0) | /* PC6 */ - SAM(DisOut,CS_8,0x030) | /* PC5 */ - SAM(DisOut,CS_7,0x00c) | /* PC4 */ - SAM(DisOut,CS_6,0x003) /* PC3 */ - ); -#endif /* EFI332_v040b */ - - /* Port E and F Data Register */ - /* see section 9 of the SIM Reference Manual */ - *PORTE0 = (unsigned char) 0; - *PORTF0 = (unsigned char) 0; - - /* Port E and F Data Direction Register */ - /* see section 9 of the SIM Reference Manual */ - *DDRE = (unsigned char) 0xff; - *DDRF = (unsigned char) 0xfd; - - /* Port E and F Pin Assignment Register */ - /* see section 9 of the SIM Reference Manual */ - *PEPAR = (unsigned char) 0xc3; /* siz1|siz0|dsack1|dsack0 */ - *PFPAR = (unsigned char) 0; - - /* end of SIM initalization code */ - /* end include in ram_init.S */ - - - - /* - * Initialize RAM by copying the .data section out of ROM (if - * needed) and "zero-ing" the .bss section. - */ - { - register char *src = _etext; - register char *dst = _copy_start; - - if (_copy_data_from_rom) - /* ROM has data at end of text; copy it. */ - while (dst < _edata) - *dst++ = *src++; - - /* Zero bss */ - for (dst = _clear_start; dst< end; dst++) - *dst = 0; - } - - /* - * Initalize the board. - */ - /* Spurious should be called in the predriver hook */ - /* Spurious_Initialize(); */ - console_init(); - - /* - * Execute main with arguments argc and agrv. - */ - boot_card(1,__argv); - reboot(); - -} - |