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modified to work with multi-section linker script

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This commit is contained in:
Markus Fröschle
2012-10-18 11:44:00 +00:00
parent 038765bbf2
commit 1e48b341ed
1 changed files with 58 additions and 89 deletions
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147
BaS_GNU/BaS_GNU/sources/sysinit.c
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@@ -13,12 +13,51 @@
#include "sysinit.h"
extern volatile long _VRAM;
extern unsigned long BaS;
extern int copy_end();
extern void wait_1ms();
extern void wait_50us();
/*
* warte_routinen
*/
void wait_10ms(void)
{
register uint32_t target = MCF_SLT_SCNT(0) - 1320000;
while (MCF_SLT_SCNT(0) > target);
}
void wait_1ms(void)
{
register uint32_t target = MCF_SLT_SCNT(0) - 132000;
while (MCF_SLT_SCNT(0) > target);
}
void wait_100us(void)
{
register uint32_t target = MCF_SLT_SCNT(0) - 13200;
while (MCF_SLT_SCNT(0) > target);
}
void wait_50us(void)
{
register uint32_t target = MCF_SLT_SCNT(0) - 6600;
while (MCF_SLT_SCNT(0) > target);
}
void wait_10us(void)
{
register uint32_t target = MCF_SLT_SCNT(0) - 1320;
while (MCF_SLT_SCNT(0) > target);
}
void wait_1us(void)
{
register uint32_t target = MCF_SLT_SCNT(0) - 132;
while (MCF_SLT_SCNT(0) > target);
}
/*
* init SLICE TIMER 0
@@ -283,79 +322,6 @@ void init_video_ddr(void) {
}
#ifdef _NOT_USED_
/*
* video mit auflösung 1280x1000 137MHz
*/
void video_1280_1024(void) {
extern int wait_pll;
asm {
// SPEICHER FÜLLEM
//testmuster 1
lea __VRAM, a2
lea __VRAM + 0x600000,a3
clr.l d0
move.l #0x1000102,d1
loop5:
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
move.l d0, (a2) +
add.l d1, d0
flo6:
cmp.l a2, a3
bgt loop5
// screen setzen
//horizontal 1280
lea 0xffff8282, a0
move.w #1800,(a0)+
move.w #1380,(a0)+
move.w #99,(a0)+
move.w #100,(a0)+
move.w #1379,(a0)+
move.w #1500,(a0)
//vertical 1024
lea 0xffff82a2, a0
move.w #1150,(a0)+
move.w #1074,(a0)+
move.w #49,(a0)+
move.w #50,(a0)+
move.w #1073,(a0)+
move.w #1100,(a0)+
// acp video on
move.l #0x01070207,d0
move.l d0, 0xf0000400
// clut setzen
lea 0xf0000000, a0
move.l #0xffffffff,(a0)+
move.l #0xff,(a0)+
move.l #0xff00,(a0)+
move.l #0xff0000,(a0)
// halt
}
}
#endif
#define PCI_MEMORY_OFFSET (0x80000000)
#define PCI_MEMORY_SIZE (0x40000000)
#define PCI_IO_OFFSET (0xD0000000)
@@ -684,11 +650,15 @@ livo:
}
void initialize_hardware(void) {
extern uint8_t *copy_start;
extern uint8_t *Bas_base;
extern uint8_t *Bas_base; /* target address to copy bas to (from linker script) */
extern uint8_t *bas; /* source address to copy bas from (from linker script) FIXME: beware of possible alignment */
extern uint32_t bas_length;/* length of BaS code to copy (from linker script) */
extern void *BaS; /* BaS routine to jump to after copy */
int i;
uint32_t *src;
uint32_t *dst;
uint32_t jmp;
uint8_t *jmp;
__asm__ __volatile__(
"move.l #0x000C8120,D0\n\t"
@@ -721,24 +691,23 @@ void initialize_hardware(void) {
}
/* copy the BaS code contained in flash to its final location */
src = &copy_start;
dst = &Bas_base;
jmp = (uint8_t *) &BaS - (uint32_t) &copy_start + (uint32_t) &Bas_base;
do {
src = (uint32_t *)&bas;
dst = (uint32_t *)&Bas_base;
jmp = (uint8_t *)&BaS;
for (i = 0; i < (int) &bas_length; i+= 4)
{
*src++ = *dst++;
*src++ = *dst++;
*src++ = *dst++;
*src++ = *dst++;
} while (src < (uint8_t *) &copy_end);
}
flushDataCacheRegion(&Bas_base, (uint8_t *) &copy_end - copy_start);
flushInstructionCacheRegion(&Bas_base, (uint8_t *) &copy_end - copy_start);
flushDataCacheRegion(&Bas_base, (int) &bas_length);
flushInstructionCacheRegion(&Bas_base, (int) &bas_length);
__asm__ __volatile__(
" .global _copy_start | \n\t"
" move.l %0,a3 | calculated start address\n\t"
" jmp (a3) | go! \n\t"
"_copy_start: | \n\t"
/* output */ :
/* input */ : "g" (jmp)
/* clobber */: "a3", "memory"