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Fix bug in MDT BITMAP to allow more than 2GB of memory.

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Signed-off by Ali Saidi <saidi@eecs.umich.edu>
This commit is contained in:
Geoffrey Blake 2007-10-19 16:44:02 -04:00
parent e527d4b9b9
commit 10253f80d1
1 changed files with 10 additions and 9 deletions
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19
system/alpha/console/console.c
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@ -60,7 +60,7 @@
#include <sys/types.h>
#define CONSOLE
#include "alpha_access.h"
#include "access.h"
#include "cserve.h"
#include "rpb.h"
@ -89,7 +89,6 @@
#define KPTE(x) ((ulong)((((ulong)(x)) << 32) | 0x1101))
#define HWRPB_PAGES 16
#define MDT_BITMAP_PAGES 4
#define NUM_KERNEL_THIRD (4)
@ -403,10 +402,12 @@ unixBoot(int argc, char **argv)
unsigned char *mdt_bitmap;
long *lp1, *lp2, sum;
int i, cl;
int kern_first_page;
int mem_size = m5Conf.mem_size;
ulong kern_first_page;
ulong mem_size = m5Conf.mem_size;
ulong mem_pages = mem_size / PAGE_SIZE, cons_pages;
ulong mdt_bitmap_pages = mem_pages / (PAGE_SIZE*8);
int mem_pages = mem_size / PAGE_SIZE, cons_pages;
ulong kernel_bytes, ksp, kernel_end, *unix_kernel_stack, bss,
ksp_bottom, ksp_top;
struct rpb_ctb *rpb_ctb;
@ -443,7 +444,7 @@ unixBoot(int argc, char **argv)
rpb = (struct rpb *)unix_boot_alloc(HWRPB_PAGES);
mdt_bitmap = (unsigned char *)unix_boot_alloc(MDT_BITMAP_PAGES);
mdt_bitmap = (unsigned char *)unix_boot_alloc(mdt_bitmap_pages);
first = (ulong *)unix_boot_alloc(1);
second = (ulong *)unix_boot_alloc(1);
third_rpb = (ulong *)unix_boot_alloc(1);
@ -503,13 +504,13 @@ unixBoot(int argc, char **argv)
third_rpb[i] = KPTE(PFN(rpb) + i);
/* Map the MDT bitmap table */
for (i = 0; i < MDT_BITMAP_PAGES; i++) {
for (i = 0; i < mdt_bitmap_pages; i++) {
third_rpb[HWRPB_PAGES + i] = KPTE(PFN(mdt_bitmap) + i);
}
/* Protect the PAL pages */
for (i = 1; i < PFN(first); i++)
third_rpb[HWRPB_PAGES + MDT_BITMAP_PAGES + i] = KPTE(i);
third_rpb[HWRPB_PAGES + mdt_bitmap_pages + i] = KPTE(i);
/* Set up third_kernel after it's loaded, when we know where it is */
kern_first_page = (KSEG_TO_PHYS(m5Conf.kernStart)/PAGE_SIZE);
@ -678,7 +679,7 @@ unixBoot(int argc, char **argv)
rpb_mdt->rpb_checksum = sum;
/* XXX should checksum the cluster descriptors */
bzero((char *)mdt_bitmap, MDT_BITMAP_PAGES * PAGE_SIZE);
bzero((char *)mdt_bitmap, mdt_bitmap_pages * PAGE_SIZE);
for (i = 0; i < mem_pages/8; i++)
((unsigned char *)mdt_bitmap)[i] = 0xff;