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[PATCH]On PMC Yosemite, get the memory size from PMON

To: linux-mips@linux-mips.org
Subject: [PATCH]On PMC Yosemite, get the memory size from PMON
From: Manish Lachwani <mlachwani@mvista.com>
Date: 20 Oct 2004 19:35:09 -0700
Cc: ralf@linux-mips.org
Organization:
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Hello Ralf

Attached untested patch implements support for getting the memory size
from PMON.PMON stores the memory size in MB in an env variable called
memsize. This patch follows the previous hypertransport patch

Thanks
Manish Lachwani

--- arch/mips/pmc-sierra/yosemite/setup.c.orig  2004-10-20
19:09:17.000000000 -0700
+++ arch/mips/pmc-sierra/yosemite/setup.c       2004-10-20 19:11:09.000000000
-0700
@@ -59,6 +59,7 @@
 
 unsigned long cpu_clock;
 unsigned long yosemite_base;
+unsigned long memory_size;
 
 void __init bus_error_init(void)
 {
@@ -197,8 +198,12 @@
        board_time_init = yosemite_time_init;
        late_time_init = py_map_ocd;
 
-       /* Add memory regions */
-       add_memory_region(0x00000000, 0x10000000, BOOT_MEM_RAM);
+       /* 
+        * Add memory regions. Check what PMON as for us and 
+        * then config memory. PMON reports the memory config
+        * in MB
+        */
+       add_memory_region(0x00000000, memory_size*1024*1024, BOOT_MEM_RAM);
 
        if (val & 0x00000020) {
                /*
--- arch/mips/pmc-sierra/yosemite/prom.c.orig   2004-10-20
18:55:06.000000000 -0700
+++ arch/mips/pmc-sierra/yosemite/prom.c        2004-10-20 19:08:40.000000000
-0700
@@ -27,6 +27,7 @@
 
 extern unsigned long yosemite_base;
 extern unsigned long cpu_clock;
+extern unsigned long memory_size; /* Get the memory size from PMON */
 
 const char *get_system_type(void)
 {
@@ -112,6 +113,11 @@
                            simple_strtol(*env + strlen("cpuclock="), NULL,
                                          10);
 
+               if (strncmp("memsize", *env, strlen("memsize")) == 0)
+                       memory_size =
+                           simple_strtol(*env + strlen("memsize="), NULL,
+                                         4);
+
                env++;
        }
 #endif /* CONFIG_MIPS32 */


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