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[SPARC64]: Move phys_base, kern_{base,size}, and sp_banks[] init to paging_init

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Also, move prom_probe_memory() into arch/sparc64/mm/init.c

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2005-09-28 21:38:08 -07:00
parent 801ab3c731
commit 0836a0eb40
3 changed files with 61 additions and 67 deletions
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19
arch/sparc64/kernel/setup.c
View file

@ -464,8 +464,6 @@ static void __init boot_flags_init(char *commands)
}
}
extern int prom_probe_memory(void);
extern unsigned long start, end;
extern void panic_setup(char *, int *);
extern unsigned short root_flags;
@ -494,8 +492,6 @@ void register_prom_callbacks(void)
void __init setup_arch(char **cmdline_p)
{
int i;
/* Initialize PROM console and command line. */
*cmdline_p = prom_getbootargs();
strcpy(saved_command_line, *cmdline_p);
@ -514,21 +510,6 @@ void __init setup_arch(char **cmdline_p)
boot_flags_init(*cmdline_p);
idprom_init();
(void) prom_probe_memory();
phys_base = 0xffffffffffffffffUL;
for (i = 0; sp_banks[i].num_bytes != 0; i++) {
unsigned long top;
if (sp_banks[i].base_addr < phys_base)
phys_base = sp_banks[i].base_addr;
top = sp_banks[i].base_addr +
sp_banks[i].num_bytes;
}
pfn_base = phys_base >> PAGE_SHIFT;
kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
kern_size = (unsigned long)&_end - (unsigned long)KERNBASE;
if (!root_flags)
root_mountflags &= ~MS_RDONLY;

47
arch/sparc64/mm/fault.c
View file

@ -71,53 +71,6 @@ void set_brkpt(unsigned long addr, unsigned char mask, int flags, int mode)
: "memory");
}
/* Nice, simple, prom library does all the sweating for us. ;) */
unsigned long __init prom_probe_memory (void)
{
register struct linux_mlist_p1275 *mlist;
register unsigned long bytes, base_paddr, tally;
register int i;
i = 0;
mlist = *prom_meminfo()->p1275_available;
bytes = tally = mlist->num_bytes;
base_paddr = mlist->start_adr;
sp_banks[0].base_addr = base_paddr;
sp_banks[0].num_bytes = bytes;
while (mlist->theres_more != (void *) 0) {
i++;
mlist = mlist->theres_more;
bytes = mlist->num_bytes;
tally += bytes;
if (i >= SPARC_PHYS_BANKS-1) {
printk ("The machine has more banks than "
"this kernel can support\n"
"Increase the SPARC_PHYS_BANKS "
"setting (currently %d)\n",
SPARC_PHYS_BANKS);
i = SPARC_PHYS_BANKS-1;
break;
}
sp_banks[i].base_addr = mlist->start_adr;
sp_banks[i].num_bytes = mlist->num_bytes;
}
i++;
sp_banks[i].base_addr = 0xdeadbeefbeefdeadUL;
sp_banks[i].num_bytes = 0;
/* Now mask all bank sizes on a page boundary, it is all we can
* use anyways.
*/
for (i = 0; sp_banks[i].num_bytes != 0; i++)
sp_banks[i].num_bytes &= PAGE_MASK;
return tally;
}
static void __kprobes unhandled_fault(unsigned long address,
struct task_struct *tsk,
struct pt_regs *regs)

62
arch/sparc64/mm/init.c
View file

@ -1425,6 +1425,50 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
}
#endif
static void __init prom_probe_memory(void)
{
struct linux_mlist_p1275 *mlist;
unsigned long bytes, base_paddr, tally;
int i;
i = 0;
mlist = *prom_meminfo()->p1275_available;
bytes = tally = mlist->num_bytes;
base_paddr = mlist->start_adr;
sp_banks[0].base_addr = base_paddr;
sp_banks[0].num_bytes = bytes;
while (mlist->theres_more != (void *) 0) {
i++;
mlist = mlist->theres_more;
bytes = mlist->num_bytes;
tally += bytes;
if (i >= SPARC_PHYS_BANKS-1) {
printk ("The machine has more banks than "
"this kernel can support\n"
"Increase the SPARC_PHYS_BANKS "
"setting (currently %d)\n",
SPARC_PHYS_BANKS);
i = SPARC_PHYS_BANKS-1;
break;
}
sp_banks[i].base_addr = mlist->start_adr;
sp_banks[i].num_bytes = mlist->num_bytes;
}
i++;
sp_banks[i].base_addr = 0xdeadbeefbeefdeadUL;
sp_banks[i].num_bytes = 0;
/* Now mask all bank sizes on a page boundary, it is all we can
* use anyways.
*/
for (i = 0; sp_banks[i].num_bytes != 0; i++)
sp_banks[i].num_bytes &= PAGE_MASK;
}
/* paging_init() sets up the page tables */
extern void cheetah_ecache_flush_init(void);
@ -1435,7 +1479,23 @@ pgd_t swapper_pg_dir[2048];
void __init paging_init(void)
{
unsigned long end_pfn, pages_avail, shift;
unsigned long real_end;
unsigned long real_end, i;
prom_probe_memory();
phys_base = 0xffffffffffffffffUL;
for (i = 0; sp_banks[i].num_bytes != 0; i++) {
unsigned long top;
if (sp_banks[i].base_addr < phys_base)
phys_base = sp_banks[i].base_addr;
top = sp_banks[i].base_addr +
sp_banks[i].num_bytes;
}
pfn_base = phys_base >> PAGE_SHIFT;
kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
kern_size = (unsigned long)&_end - (unsigned long)KERNBASE;
set_bit(0, mmu_context_bmap);