Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 152 insertions, 0 deletions

diff --git a/arch/sparc64/prom/memory.c b/arch/sparc64/prom/memory.c
new file mode 100644
index 00000000000..f4a8143e052
--- /dev/null
+++ b/arch/sparc64/prom/memory.c
@@ -0,0 +1,152 @@
+/* $Id: memory.c,v 1.5 1999/08/31 06:55:04 davem Exp $
+ * memory.c: Prom routine for acquiring various bits of information
+ *           about RAM on the machine, both virtual and physical.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+/* This routine, for consistency, returns the ram parameters in the
+ * V0 prom memory descriptor format.  I choose this format because I
+ * think it was the easiest to work with.  I feel the religious
+ * arguments now... ;)  Also, I return the linked lists sorted to
+ * prevent paging_init() upset stomach as I have not yet written
+ * the pepto-bismol kernel module yet.
+ */
+
+struct linux_prom64_registers prom_reg_memlist[64];
+struct linux_prom64_registers prom_reg_tmp[64];
+
+struct linux_mlist_p1275 prom_phys_total[64];
+struct linux_mlist_p1275 prom_prom_taken[64];
+struct linux_mlist_p1275 prom_phys_avail[64];
+
+struct linux_mlist_p1275 *prom_ptot_ptr = prom_phys_total;
+struct linux_mlist_p1275 *prom_ptak_ptr = prom_prom_taken;
+struct linux_mlist_p1275 *prom_pavl_ptr = prom_phys_avail;
+
+struct linux_mem_p1275 prom_memlist;
+
+
+/* Internal Prom library routine to sort a linux_mlist_p1275 memory
+ * list.  Used below in initialization.
+ */
+static void __init
+prom_sortmemlist(struct linux_mlist_p1275 *thislist)
+{
+        int swapi = 0;
+        int i, mitr;
+        unsigned long tmpaddr, tmpsize;
+        unsigned long lowest;
+
+        for(i=0; thislist[i].theres_more; i++) {
+                lowest = thislist[i].start_adr;
+                for(mitr = i+1; thislist[mitr-1].theres_more; mitr++)
+                        if(thislist[mitr].start_adr < lowest) {
+                                lowest = thislist[mitr].start_adr;
+                                swapi = mitr;
+                        }
+                if(lowest == thislist[i].start_adr) continue;
+                tmpaddr = thislist[swapi].start_adr;
+                tmpsize = thislist[swapi].num_bytes;
+                for(mitr = swapi; mitr > i; mitr--) {
+                        thislist[mitr].start_adr = thislist[mitr-1].start_adr;
+                        thislist[mitr].num_bytes = thislist[mitr-1].num_bytes;
+                }
+                thislist[i].start_adr = tmpaddr;
+                thislist[i].num_bytes = tmpsize;
+        }
+}
+
+/* Initialize the memory lists based upon the prom version. */
+void __init prom_meminit(void)
+{
+        int node = 0;
+        unsigned int iter, num_regs;
+
+        node = prom_finddevice("/memory");
+        num_regs = prom_getproperty(node, "available",
+                                    (char *) prom_reg_memlist,
+                                    sizeof(prom_reg_memlist));
+        num_regs = (num_regs/sizeof(struct linux_prom64_registers));
+        for(iter=0; iter<num_regs; iter++) {
+                prom_phys_avail[iter].start_adr =
+                        prom_reg_memlist[iter].phys_addr;
+                prom_phys_avail[iter].num_bytes =
+                        prom_reg_memlist[iter].reg_size;
+                prom_phys_avail[iter].theres_more =
+                        &prom_phys_avail[iter+1];
+        }
+        prom_phys_avail[iter-1].theres_more = NULL;
+
+        num_regs = prom_getproperty(node, "reg",
+                                    (char *) prom_reg_memlist,
+                                    sizeof(prom_reg_memlist));
+        num_regs = (num_regs/sizeof(struct linux_prom64_registers));
+        for(iter=0; iter<num_regs; iter++) {
+                prom_phys_total[iter].start_adr =
+                        prom_reg_memlist[iter].phys_addr;
+                prom_phys_total[iter].num_bytes =
+                        prom_reg_memlist[iter].reg_size;
+                prom_phys_total[iter].theres_more =
+                        &prom_phys_total[iter+1];
+        }
+        prom_phys_total[iter-1].theres_more = NULL;
+
+        node = prom_finddevice("/virtual-memory");
+        num_regs = prom_getproperty(node, "available",
+                                    (char *) prom_reg_memlist,
+                                    sizeof(prom_reg_memlist));
+        num_regs = (num_regs/sizeof(struct linux_prom64_registers));
+
+        /* Convert available virtual areas to taken virtual
+         * areas.  First sort, then convert.
+         */
+        for(iter=0; iter<num_regs; iter++) {
+                prom_prom_taken[iter].start_adr =
+                        prom_reg_memlist[iter].phys_addr;
+                prom_prom_taken[iter].num_bytes =
+                        prom_reg_memlist[iter].reg_size;
+                prom_prom_taken[iter].theres_more =
+                        &prom_prom_taken[iter+1];
+        }
+        prom_prom_taken[iter-1].theres_more = NULL;
+
+        prom_sortmemlist(prom_prom_taken);
+
+        /* Finally, convert. */
+        for(iter=0; iter<num_regs; iter++) {
+                prom_prom_taken[iter].start_adr =
+                        prom_prom_taken[iter].start_adr +
+                        prom_prom_taken[iter].num_bytes;
+                prom_prom_taken[iter].num_bytes =
+                        prom_prom_taken[iter+1].start_adr -
+                        prom_prom_taken[iter].start_adr;
+        }
+        prom_prom_taken[iter-1].num_bytes =
+                -1UL - prom_prom_taken[iter-1].start_adr;
+
+        /* Sort the other two lists. */
+        prom_sortmemlist(prom_phys_total);
+        prom_sortmemlist(prom_phys_avail);
+
+        /* Link all the lists into the top-level descriptor. */
+        prom_memlist.p1275_totphys=&prom_ptot_ptr;
+        prom_memlist.p1275_prommap=&prom_ptak_ptr;
+        prom_memlist.p1275_available=&prom_pavl_ptr;
+}
+
+/* This returns a pointer to our libraries internal p1275 format
+ * memory descriptor.
+ */
+struct linux_mem_p1275 *
+prom_meminfo(void)
+{
+        return &prom_memlist;
+}