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authorBenjamin Nash <benash@umich.edu>2005-07-26 12:42:02 -0400
committerBenjamin Nash <benash@umich.edu>2005-07-26 12:42:02 -0400
commit5da70b93db7cb550be6c10797cd502ce4af35226 (patch)
tree133e3fc0c99dcc2eb7fadb4588efaa610f2905aa /system/alpha/console/console.c
parentfce2978d4182b2c2434c1742c1de613b7747deed (diff)
downloadgem5-5da70b93db7cb550be6c10797cd502ce4af35226.tar.xz
New console terminal block structure, fix kernel stack pointer.
console/console.c: Use virtual addresses for kernel stack pointer, use new ctb structure. h/rpb.h: Update console terminal block structure.
Diffstat (limited to 'system/alpha/console/console.c')
-rw-r--r--system/alpha/console/console.c58
1 files changed, 27 insertions, 31 deletions
diff --git a/system/alpha/console/console.c b/system/alpha/console/console.c
index 508cd1fc1..c616c1cdb 100644
--- a/system/alpha/console/console.c
+++ b/system/alpha/console/console.c
@@ -470,6 +470,7 @@ unixBoot(int argc, char **argv)
/* Region 1 */
second[SECOND(0x20000000) + i] = KPTE(PFN(third_kernel) + i);
}
+
/* Region 2 */
second[SECOND(0x40000000)] = KPTE(PFN(second));
@@ -489,8 +490,9 @@ unixBoot(int argc, char **argv)
#define DATABASE_END 0x20020000
ulong *dbPage = (ulong*)unix_boot_alloc(1);
+ bzero(dbPage, PAGE_SIZE);
second[SECOND(DATABASE_BASE)] = KPTE(PFN(dbPage));
- for (i = DATABASE_BASE; i < DATABASE_END ; i += 8096) {
+ for (i = DATABASE_BASE; i < DATABASE_END ; i += PAGE_SIZE) {
ulong *db = (ulong*)unix_boot_alloc(1);
dbPage[THIRD(i)] = KPTE(PFN(db));
}
@@ -523,30 +525,27 @@ unixBoot(int argc, char **argv)
kernel_end - m5Conf.kernStart );
panic("kernel too big\n");
}
-
+ printf_lock("kstart = 0x%x, kend = 0x%x, kentry = 0x%x, numCPUs = 0x%x\n", m5Conf.kernStart, m5Conf.kernEnd, m5Conf.entryPoint, m5Conf.numCPUs);
/* Map the kernel's pages into the third level of region 2 */
- for (ptr = m5Conf.kernStart; ptr < kernel_end; ptr += PAGE_SIZE) {
- third_kernel[THIRD_XXX(ptr)] = KPTE(PFN(ptr));
- }
-
- /* blow 2 pages of phys mem for guards since it maintains 1-to-1 mapping */
- ksp = ksp_top + (3 * PAGE_SIZE);
- if (ksp - m5Conf.kernStart > (0x800000*NUM_KERNEL_THIRD)) {
- printf_lock("Kernel stack pushd us over 8MB\n");
- panic("ksp too big\n");
- }
- if (THIRD_XXX((ulong)ksp_top) > NUM_KERNEL_THIRD * 1024) {
- panic("increase NUM_KERNEL_THIRD, and change THIRD_XXX\n");
- }
+ //for (ptr = m5Conf.kernStart; ptr < kernel_end; ptr += PAGE_SIZE) {
+ // third_kernel[THIRD_XXX(ptr)] = KPTE(PFN(ptr));
+ //}
+
+ ksp_top = (ulong)unix_boot_alloc(1);
+ ksp = ksp_top + PAGE_SIZE;
+
+ //if (ksp - m5Conf.kernStart > (0x800000*NUM_KERNEL_THIRD)) {
+ // printf_lock("Kernel stack pushd us over 8MB\n");
+ // panic("ksp too big\n");
+ //}
+ //if (THIRD_XXX((ulong)ksp_top) > NUM_KERNEL_THIRD * 1024) {
+ // panic("increase NUM_KERNEL_THIRD, and change THIRD_XXX\n");
+ //}
ptr = (ulong) ksp_top;
bzero((char *)ptr, PAGE_SIZE * 2);
- third_kernel[THIRD_XXX(ptr)] = 0; /* Stack Guard Page */
- ptr += PAGE_SIZE;
- third_kernel[THIRD_XXX(ptr)] = KPTE(PFN(ptr)); /* Kernel Stack Pages */
- ptr += PAGE_SIZE;
- third_kernel[THIRD_XXX(ptr)] = KPTE(PFN(ptr));
- ptr += PAGE_SIZE;
- third_kernel[THIRD_XXX(ptr)] = 0; /* Stack Guard Page */
+ dbPage[THIRD(0x20040000)] = 0; /* Stack Guard Page */
+ dbPage[THIRD(0x20042000)] = KPTE(PFN(ptr)); /* Kernel Stack Pages */
+ dbPage[THIRD(0x20046000)] = 0; /* Stack Guard Page */
/* put argv into the bottom of the stack - argv starts at 1 because
* the command thatr got us here (i.e. "unixboot) is in argv[0].
@@ -563,7 +562,7 @@ unixBoot(int argc, char **argv)
kargv[kargc] = NULL; /* just to be sure; doesn't seem to be used */
ksp -= sizeof(char *); /* point above last arg for no real reason */
- free_pfn = PFN(ptr);
+ free_pfn = PFN(kernel_end);
bcopy((char *)&m5_rpb, (char *)rpb, sizeof(struct rpb));
@@ -610,7 +609,7 @@ unixBoot(int argc, char **argv)
bcopy((char *)&m5_rpb_percpu, (char *)thisCPU,
sizeof(struct rpb_percpu));
- thisCPU->rpb_pcb.rpb_ksp = ksp;
+ thisCPU->rpb_pcb.rpb_ksp = (0x20044000 - 0x18);
thisCPU->rpb_pcb.rpb_ptbr = PFN(first);
thisCPU->rpb_logout = KSEG_TO_PHYS(percpu_logout);
@@ -633,18 +632,15 @@ unixBoot(int argc, char **argv)
bzero((char *)rpb_ctb, sizeof(struct ctb_tt));
- rpb_ctb->rpb_type = CONS_DZ;
+ rpb_ctb->rpb_type = CONS_REM;
rpb_ctb->rpb_length = sizeof(ctb_tt) - sizeof(rpb_ctb);
/*
* uart initizliation
*/
- ctb_tt->ctb_csr = 0;
- ctb_tt->ctb_tivec = 0x6c0; /* matches tlaser pal code */
- ctb_tt->ctb_rivec = 0x680; /* matches tlaser pal code */
- ctb_tt->ctb_baud = 9600;
- ctb_tt->ctb_put_sts = 0;
- ctb_tt->ctb_get_sts = 0;
+ ctb_tt->ctb_tintr_vec = 0x6c0; /* matches tlaser pal code */
+ ctb_tt->ctb_rintr_vec = 0x680; /* matches tlaser pal code */
+ ctb_tt->ctb_term_type = CTB_GRAPHICS;
rpb_crb = (struct rpb_crb *) (((ulong)rpb_ctb) + sizeof(struct ctb_tt));
rpb->rpb_crb_off = ((ulong)rpb_crb) - (ulong)rpb;