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Add disable_cache() for 030 and 040 (new)

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This commit is contained in:
Laurent Vivier 2004-06-09 17:34:40 +00:00
parent 97ac148b40
commit e56b1b94fd
3 changed files with 28 additions and 4 deletions
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6
second/MMU030_asm.S
View File

@ -6,6 +6,12 @@
.chip 68030
.global MMU030_disable_cache
MMU030_disable_cache:
lea 0x0808, %a0
movec %a0, %cacr
rts
.global MMU030_get_TC
MMU030_get_TC:
link.w %fp,#0

9
second/MMU040_asm.S
View File

@ -6,6 +6,15 @@
.chip 68040
.global MMU040_disable_cache
MMU040_disable_cache:
moveq.l #0, %d0
nop
cpusha %bc
movec %d0, %cacr
cinva %bc
rts
.global MMU040_get_TC
MMU040_get_TC:
link.w %fp,#0

17
second/main.c
View File

@ -20,11 +20,14 @@
#include "load.h"
typedef void (*entry_t) (unsigned long , unsigned long , unsigned long );
typedef void (*disable_cache_t) (void);
extern void enter_kernel030(unsigned long addr, unsigned long size, unsigned long dest);
extern char end_enter_kernel030;
extern void MMU030_disable_cache(void);
extern void enter_kernel040(unsigned long addr, unsigned long size, unsigned long dest);
extern char end_enter_kernel040;
extern void MMU040_disable_cache(void);
#define PAGE_SHIFT 12
#define PAGE_SIZE (1UL << PAGE_SHIFT)
@ -48,6 +51,7 @@ int start(struct first_level_info* info)
char * kernel;
unsigned long physImage;
entry_t entry;
disable_cache_t disable_cache;
int ret;
unsigned long start_mem;
unsigned long aligned_size;
@ -107,11 +111,13 @@ int start(struct first_level_info* info)
{
enter_kernel = (unsigned long)enter_kernel040;
end_enter_kernel = (unsigned long)&end_enter_kernel040;
disable_cache = MMU040_disable_cache;
}
else
{
enter_kernel = (unsigned long)enter_kernel030;
end_enter_kernel = (unsigned long)&end_enter_kernel030;
disable_cache = MMU030_disable_cache;
}
printf("Available Memory: %ld kB\n", bank_mem_avail() / 1024);
@ -202,10 +208,6 @@ int start(struct first_level_info* info)
asm("ori.w #0x0700,%sr");
/* disable and flush cache */
asm("lea 0x0808, %%a1; movec %%a1, %%cacr"::: "%a1");
ret = logical2physical(enter_kernel, (unsigned long*)&entry);
if ( (ret == 0) && (enter_kernel != (unsigned long)entry) )
@ -226,6 +228,13 @@ int start(struct first_level_info* info)
printf("\n");
printf("Physical address of kernel will be 0x%08lx\n", start_mem);
printf("Ok, booting the kernel.\n");
/* disable and flush cache */
disable_cache();
/* kick off */
entry(physImage, uncompressed_size + BI_ALLOC_SIZE, start_mem);
return 0;