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 | 192 |
1 files changed, 0 insertions, 192 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 05f8d75ce9..0000000000 --- a/c/src/lib/libbsp/m68k/efi332/start/start.c +++ /dev/null @@ -1,192 +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", ""}; -char * const __env[]= {""}; - -/* - * This prototype really should have the noreturn attribute but - * that causes a warning since it appears that the routine does - * return. - * - * void dumby_start () __attribute__ ((noreturn)); - */ - -void dumby_start (); -void dumby_start() { -void boot_card(); - - /* We need to by-pass the link instruction since the RAM chip- - select pins are not yet configured. */ - asm volatile ( ".global start ; - start:"); - - /* disable interrupts, load stack pointer */ - asm volatile ( "oriw #0x0700, %sr; - moveal #M68Kvec, %a0; - movec %a0, %vbr; - movel #_end, %d0; - addl " STACK_SIZE ",%d0; - movel %d0,%sp; - link %a6, #0" - ); - - /* 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,W) | SAM(0x0,14,X) | SAM(EFI_Y,8,Y) | STSIM ); - while (! (*SYNCR & SLOCK)); /* protect from clock overshoot */ - /* include in ram_init.S */ - *SYNCR = (unsigned short int) - ( SAM(EFI_W,15,W) | SAM(EFI_X,14,X) | SAM(EFI_Y,8,Y) | 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 ); /* 256 bytes located at 0x80000 */ - *CSBAR3 = (unsigned short int) - (0xfff8 | BS_64K); /* AVEC interrupts */ - *CSBAR10 = (unsigned short int) - (((0x000000 >> 8)&0xfff8) | BS_512K ); /* 512k bytes located at 0x0000 */ - - /* Chip-Select Options Registers */ - /* see section 7 of the SIM Reference Manual */ - *CSORBT = (unsigned short int) - ( BothBytes | ReadWrite | SyncAS | WaitStates_13 | UserSupSpace ); - *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) - ( BothBytes | ReadWrite | SyncAS | CPUSpace | IPLevel_any | AVEC ); - *CSOR10 = (unsigned short int) - ( BothBytes | ReadOnly | SyncAS | External | UserSupSpace ); - - /* Chip Select Pin Assignment Register 0 */ - /* see section 7 of the SIM Reference Manual */ - *CSPAR0 = (unsigned short int)( - SAM(DisOut,CS_5,0x3000) | /* PC2 */ - SAM(DisOut,CS_4,0x0c00) | /* PC1 */ - SAM(DisOut,CS_3,0x0300) | /* AVEC (internally) */ - SAM(CS16bit,CS_2,0x00c0)| /* RAM UDS */ - SAM(CS16bit,CS_1,0x0030)| /* RAM LDS */ - SAM(CS16bit,CS_0,0x000c)| /* W/!R */ - SAM(CS16bit,CSBOOT,0x0003) /* ROM DS */ - ); - - /* Chip Select Pin Assignment Register 1 */ - /* see section 7 of the SIM Reference Manual */ - *CSPAR1 = (unsigned short int)( - SAM(CS16bit,CS_10,0x300)| /* ECLK */ - SAM(DisOut,CS_9,0x0c0) | /* PC6 */ - SAM(DisOut,CS_8,0x030) | /* PC5 */ - SAM(DisOut,CS_7,0x00c) | /* PC4 */ - SAM(DisOut,CS_6,0x003) /* PC3 */ - ); - - /* 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) 0; - *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 = _endtext; - register char *dst = _sdata; - - if (_copy_data_from_rom) - /* ROM has data at end of text; copy it. */ - while (dst < _edata) - *dst++ = *src++; - - /* Zero bss */ - for (dst = __bss_start; dst< _end; dst++) - *dst = 0; - } - - /* - * Initalize the board. - */ - Spurious_Initialize(); - console_init(); - - /* - * Execute main with arguments argv and environment env - */ - /* main(1, __argv, __env); */ - - boot_card(); - - reboot(); -} - -void reboot() {asm("trap #15");} - |