diff options
Diffstat (limited to 'arch/m68k/platform/68328/head-ram.S')
-rw-r--r-- | arch/m68k/platform/68328/head-ram.S | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/arch/m68k/platform/68328/head-ram.S b/arch/m68k/platform/68328/head-ram.S deleted file mode 100644 index 5189ef9..0000000 --- a/arch/m68k/platform/68328/head-ram.S +++ /dev/null @@ -1,141 +0,0 @@ - - .global __main - .global __rom_start - - .global _rambase - .global _ramstart - - .global splash_bits - .global _start - .global _stext - .global _edata - -#define DEBUG -#define ROM_OFFSET 0x10C00000 -#define STACK_GAURD 0x10 - - .text - -_start: -_stext: - movew #0x2700, %sr /* Exceptions off! */ - -#if 0 - /* Init chip registers. uCsimm specific */ - moveb #0x00, 0xfffffb0b /* Watchdog off */ - moveb #0x10, 0xfffff000 /* SCR */ - - movew #0x2400, 0xfffff200 /* PLLCR */ - movew #0x0123, 0xfffff202 /* PLLFSR */ - - moveb #0x00, 0xfffff40b /* enable chip select */ - moveb #0x00, 0xfffff423 /* enable /DWE */ - moveb #0x08, 0xfffffd0d /* disable hardmap */ - moveb #0x07, 0xfffffd0e /* level 7 interrupt clear */ - - movew #0x8600, 0xfffff100 /* FLASH at 0x10c00000 */ - movew #0x018b, 0xfffff110 /* 2Meg, enable, 0ws */ - - movew #0x8f00, 0xfffffc00 /* DRAM configuration */ - movew #0x9667, 0xfffffc02 /* DRAM control */ - movew #0x0000, 0xfffff106 /* DRAM at 0x00000000 */ - movew #0x068f, 0xfffff116 /* 8Meg, enable, 0ws */ - - moveb #0x40, 0xfffff300 /* IVR */ - movel #0x007FFFFF, %d0 /* IMR */ - movel %d0, 0xfffff304 - - moveb 0xfffff42b, %d0 - andb #0xe0, %d0 - moveb %d0, 0xfffff42b - - moveb #0x08, 0xfffff907 /* Ignore CTS */ - movew #0x010b, 0xfffff902 /* BAUD to 9600 */ - movew #0xe100, 0xfffff900 /* enable */ -#endif - - movew #16384, %d0 /* PLL settle wait loop */ -L0: - subw #1, %d0 - bne L0 -#ifdef DEBUG - moveq #70, %d7 /* 'F' */ - moveb %d7,0xfffff907 /* No absolute addresses */ -pclp1: - movew 0xfffff906, %d7 - andw #0x2000, %d7 - beq pclp1 -#endif /* DEBUG */ - -#ifdef DEBUG - moveq #82, %d7 /* 'R' */ - moveb %d7,0xfffff907 /* No absolute addresses */ -pclp3: - movew 0xfffff906, %d7 - andw #0x2000, %d7 - beq pclp3 -#endif /* DEBUG */ - moveal #0x007ffff0, %ssp - moveal #__bss_start, %a0 - moveal #__bss_stop, %a1 - - /* Copy 0 to %a0 until %a0 >= %a1 */ -L1: - movel #0, %a0@+ - cmpal %a0, %a1 - bhi L1 - -#ifdef DEBUG - moveq #67, %d7 /* 'C' */ - jsr putc -#endif /* DEBUG */ - - pea 0 - pea env - pea %sp@(4) - pea 0 - -#ifdef DEBUG - moveq #70, %d7 /* 'F' */ - jsr putc -#endif /* DEBUG */ - -lp: - jsr start_kernel - jmp lp -_exit: - - jmp _exit - -__main: - /* nothing */ - rts - -#ifdef DEBUG -putc: - moveb %d7,0xfffff907 -pclp: - movew 0xfffff906, %d7 - andw #0x2000, %d7 - beq pclp - rts -#endif /* DEBUG */ - - .data - -/* - * Set up the usable of RAM stuff. Size of RAM is determined then - * an initial stack set up at the end. - */ -.align 4 -_ramvec: -.long 0 -_rambase: -.long 0 -_ramstart: -.long 0 -_ramend: -.long 0 - -env: - .long 0 |