patch-2.3.48 linux/arch/mips/ddb5074/prom.c

• Lines: 63
• Date: Thu Feb 24 22:52:30 2000
• Orig file: v2.3.47/linux/arch/mips/ddb5074/prom.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.47/linux/arch/mips/ddb5074/prom.c linux/arch/mips/ddb5074/prom.c
@@ -0,0 +1,62 @@
+/*
+ *  arch/mips/ddb5074/prom.c -- NEC DDB Vrc-5074 PROM routines
+ *
+ *  Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
+ *                     Sony Suprastructure Center Europe (SUPC-E), Brussels
+ *
+ *  $Id: prom.c,v 1.2 2000/02/14 17:07:36 ralf Exp $
+ */
+
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/bootmem.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+
+
+char arcs_cmdline[CL_SIZE];
+
+extern char _end;
+
+#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
+#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
+
+
+void __init prom_init(const char *s)
+{
+    int i = 0;
+    unsigned long mem_size, free_start, free_end, start_pfn, bootmap_size;
+
+//  _serinit();
+
+    if (s != (void *)-1)
+	while (*s && i < sizeof(arcs_cmdline)-1)
+	    arcs_cmdline[i++] = *s++;
+    arcs_cmdline[i] = '\0';
+
+    mips_machgroup = MACH_GROUP_NEC_DDB;
+    mips_machtype = MACH_NEC_DDB5074;
+    /* 64 MB non-upgradable */
+    mem_size = 64 << 20;
+
+    free_start = PHYSADDR(PFN_ALIGN(&_end));
+    free_end = mem_size;
+    start_pfn = PFN_UP((unsigned long)&_end);
+
+    /* Register all the contiguous memory with the bootmem allocator
+       and free it.  Be careful about the bootmem freemap.  */
+    bootmap_size = init_bootmem(start_pfn, mem_size >> PAGE_SHIFT);
+
+    /* Free the entire available memory after the _end symbol.  */
+    free_start += bootmap_size;
+    free_bootmem(free_start, free_end-free_start);
+}
+
+void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
+{
+}
+
+void __init prom_free_prom_memory(void)
+{
+}