summaryrefslogtreecommitdiffstats
path: root/arch/alpha/boot/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/boot/main.c')
-rw-r--r--arch/alpha/boot/main.c142
1 files changed, 45 insertions, 97 deletions
diff --git a/arch/alpha/boot/main.c b/arch/alpha/boot/main.c
index c2d4e657e..dd4e47ab5 100644
--- a/arch/alpha/boot/main.c
+++ b/arch/alpha/boot/main.c
@@ -22,61 +22,27 @@
extern int vsprintf(char *, const char *, va_list);
extern unsigned long switch_to_osf_pal(unsigned long nr,
struct pcb_struct * pcb_va, struct pcb_struct * pcb_pa,
- unsigned long vptb, unsigned long *kstk);
-
-int printk(const char * fmt, ...)
-{
- va_list args;
- int i, j, written, remaining, num_nl;
- static char buf[1024];
- char * str;
-
- va_start(args, fmt);
- i = vsprintf(buf, fmt, args);
- va_end(args);
-
- /* expand \n into \r\n: */
-
- num_nl = 0;
- for (j = 0; j < i; ++j) {
- if (buf[j] == '\n')
- ++num_nl;
- }
- remaining = i + num_nl;
- for (j = i - 1; j >= 0; --j) {
- buf[j + num_nl] = buf[j];
- if (buf[j] == '\n') {
- --num_nl;
- buf[j + num_nl] = '\r';
- }
- }
-
- str = buf;
- do {
- written = puts(str, remaining);
- remaining -= written;
- str += written;
- } while (remaining > 0);
- return i;
-}
-
-#define hwrpb (*INIT_HWRPB)
+ unsigned long *vptb);
+struct hwrpb_struct *hwrpb = INIT_HWRPB;
+static struct pcb_struct pcb_va[1];
/*
* Find a physical address of a virtual object..
*
* This is easy using the virtual page table address.
*/
-struct pcb_struct * find_pa(unsigned long *vptb, struct pcb_struct * pcb)
+
+static inline void *
+find_pa(unsigned long *vptb, void *ptr)
{
- unsigned long address = (unsigned long) pcb;
+ unsigned long address = (unsigned long) ptr;
unsigned long result;
result = vptb[address >> 13];
result >>= 32;
result <<= 13;
result |= address & 0x1fff;
- return (struct pcb_struct *) result;
+ return (void *) result;
}
/*
@@ -88,30 +54,19 @@ struct pcb_struct * find_pa(unsigned long *vptb, struct pcb_struct * pcb)
* code has the L1 page table identity-map itself in the second PTE
* in the L1 page table. Thus the L1-page is virtually addressable
* itself (through three levels) at virtual address 0x200802000.
- *
- * As we don't want it there anyway, we also move the L1 self-map
- * up as high as we can, so that the last entry in the L1 page table
- * maps the page tables.
- *
- * As a result, the OSF/1 pal-code will instead use a virtual page table
- * map located at 0xffffffe00000000.
*/
-#define pcb_va ((struct pcb_struct *) 0x20000000)
-#define old_vptb (0x0000000200000000UL)
-#define new_vptb (0xfffffffe00000000UL)
-void pal_init(void)
+
+#define VPTB ((unsigned long *) 0x200000000)
+#define L1 ((unsigned long *) 0x200802000)
+
+void
+pal_init(void)
{
- unsigned long i, rev, sum;
- unsigned long *L1, *l;
+ unsigned long i, rev;
struct percpu_struct * percpu;
struct pcb_struct * pcb_pa;
- /* Find the level 1 page table and duplicate it in high memory */
- L1 = (unsigned long *) 0x200802000UL; /* (1<<33 | 1<<23 | 1<<13) */
- L1[1023] = L1[1];
-
- percpu = (struct percpu_struct *) (hwrpb.processor_offset + (unsigned long) &hwrpb),
-
+ /* Create the dummy PCB. */
pcb_va->ksp = 0;
pcb_va->usp = 0;
pcb_va->ptbr = L1[1] >> 32;
@@ -119,39 +74,32 @@ void pal_init(void)
pcb_va->pcc = 0;
pcb_va->unique = 0;
pcb_va->flags = 1;
- pcb_pa = find_pa((unsigned long *) old_vptb, pcb_va);
- printk("Switching to OSF PAL-code .. ");
+ pcb_va->res1 = 0;
+ pcb_va->res2 = 0;
+ pcb_pa = find_pa(VPTB, pcb_va);
+
/*
* a0 = 2 (OSF)
- * a1 = return address, but we give the asm the virtual addr of the PCB
+ * a1 = return address, but we give the asm the vaddr of the PCB
* a2 = physical addr of PCB
* a3 = new virtual page table pointer
- * a4 = KSP (but we give it 0, asm sets it)
+ * a4 = KSP (but the asm sets it)
*/
- i = switch_to_osf_pal(
- 2,
- pcb_va,
- pcb_pa,
- new_vptb,
- 0);
+ srm_printk("Switching to OSF PAL-code .. ");
+
+ i = switch_to_osf_pal(2, pcb_va, pcb_pa, VPTB);
if (i) {
- printk("failed, code %ld\n", i);
+ srm_printk("failed, code %ld\n", i);
halt();
}
- rev = percpu->pal_revision = percpu->palcode_avail[2];
- hwrpb.vptb = new_vptb;
+ percpu = (struct percpu_struct *)
+ (INIT_HWRPB->processor_offset + (unsigned long) INIT_HWRPB);
+ rev = percpu->pal_revision = percpu->palcode_avail[2];
- /* update checksum: */
- sum = 0;
- for (l = (unsigned long *) &hwrpb; l < (unsigned long *) &hwrpb.chksum; ++l)
- sum += *l;
- hwrpb.chksum = sum;
+ srm_printk("Ok (rev %lx)\n", rev);
- printk("Ok (rev %lx)\n", rev);
- /* remove the old virtual page-table mapping */
- L1[1] = 0;
- flush_tlb_all();
+ tbia(); /* do it directly in case we are SMP */
}
static inline long openboot(void)
@@ -159,15 +107,15 @@ static inline long openboot(void)
char bootdev[256];
long result;
- result = dispatch(CCB_GET_ENV, ENV_BOOTED_DEV, bootdev, 255);
+ result = srm_dispatch(CCB_GET_ENV, ENV_BOOTED_DEV, bootdev, 255);
if (result < 0)
return result;
- return dispatch(CCB_OPEN, bootdev, result & 255);
+ return srm_dispatch(CCB_OPEN, bootdev, result & 255);
}
static inline long close(long dev)
{
- return dispatch(CCB_CLOSE, dev);
+ return srm_dispatch(CCB_CLOSE, dev);
}
static inline long load(long dev, unsigned long addr, unsigned long count)
@@ -176,15 +124,15 @@ static inline long load(long dev, unsigned long addr, unsigned long count)
extern char _end;
long result, boot_size = &_end - (char *) BOOT_ADDR;
- result = dispatch(CCB_GET_ENV, ENV_BOOTED_FILE, bootfile, 255);
+ result = srm_dispatch(CCB_GET_ENV, ENV_BOOTED_FILE, bootfile, 255);
if (result < 0)
return result;
result &= 255;
bootfile[result] = '\0';
if (result)
- printk("Boot file specification (%s) not implemented\n",
+ srm_printk("Boot file specification (%s) not implemented\n",
bootfile);
- return dispatch(CCB_READ, dev, count, addr, boot_size/512 + 1);
+ return srm_dispatch(CCB_READ, dev, count, addr, boot_size/512 + 1);
}
/*
@@ -208,27 +156,27 @@ void start_kernel(void)
int nbytes;
char envval[256];
- printk("Linux/AXP bootloader for Linux " UTS_RELEASE "\n");
- if (hwrpb.pagesize != 8192) {
- printk("Expected 8kB pages, got %ldkB\n", hwrpb.pagesize >> 10);
+ srm_printk("Linux/AXP bootloader for Linux " UTS_RELEASE "\n");
+ if (INIT_HWRPB->pagesize != 8192) {
+ srm_printk("Expected 8kB pages, got %ldkB\n", INIT_HWRPB->pagesize >> 10);
return;
}
pal_init();
dev = openboot();
if (dev < 0) {
- printk("Unable to open boot device: %016lx\n", dev);
+ srm_printk("Unable to open boot device: %016lx\n", dev);
return;
}
dev &= 0xffffffff;
- printk("Loading vmlinux ...");
+ srm_printk("Loading vmlinux ...");
i = load(dev, START_ADDR, KERNEL_SIZE);
close(dev);
if (i != KERNEL_SIZE) {
- printk("Failed (%lx)\n", i);
+ srm_printk("Failed (%lx)\n", i);
return;
}
- nbytes = dispatch(CCB_GET_ENV, ENV_BOOTED_OSFLAGS,
+ nbytes = srm_dispatch(CCB_GET_ENV, ENV_BOOTED_OSFLAGS,
envval, sizeof(envval));
if (nbytes < 0) {
nbytes = 0;
@@ -236,7 +184,7 @@ void start_kernel(void)
envval[nbytes] = '\0';
strcpy((char*)ZERO_PAGE, envval);
- printk(" Ok\nNow booting the kernel\n");
+ srm_printk(" Ok\nNow booting the kernel\n");
runkernel();
for (i = 0 ; i < 0x100000000 ; i++)
/* nothing */;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 22:42:30 +0000