Changeset 971cf31f in mainline for arch/mips32

Timestamp:

2006-06-10T11:05:21Z (19 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0182a665

Parents:

88636f68

Message:

update mips32 boot loading API

Location:

arch/mips32

Files:

• include/boot.h (added)
• src/mips32.c (modified) (2 diffs)
• src/start.S (modified) (1 diff)

arch/mips32/src/mips32.c

@@ -29 +29 @@
 
 #include <arch.h>
+#include <arch/boot.h>
 #include <arch/cp0.h>
 #include <arch/exception.h>
@@ -61 +62 @@
 #define CACHE_EXC ((char *) 0x80000100)
 
+bootinfo_t bootinfo;
+
 void arch_pre_main(void)
 {
         /* Setup usermode */
-        init.cnt = 8;
-        init.tasks[0].addr = INIT_ADDRESS;
-        init.tasks[0].size = INIT_SIZE;
-        init.tasks[1].addr = INIT_ADDRESS + 0x100000;
-        init.tasks[1].size = INIT_SIZE;
-        init.tasks[2].addr = INIT_ADDRESS + 0x200000;
-        init.tasks[2].size = INIT_SIZE;
-        init.tasks[3].addr = INIT_ADDRESS + 0x300000;
-        init.tasks[3].size = INIT_SIZE;
-        init.tasks[4].addr = INIT_ADDRESS + 0x400000;
-        init.tasks[4].size = INIT_SIZE;
-        init.tasks[5].addr = INIT_ADDRESS + 0x500000;
-        init.tasks[5].size = INIT_SIZE;
-        init.tasks[6].addr = INIT_ADDRESS + 0x600000;
-        init.tasks[6].size = INIT_SIZE;
-        init.tasks[7].addr = INIT_ADDRESS + 0x700000;
-        init.tasks[7].size = INIT_SIZE;
+        init.cnt = bootinfo.cnt;
+        
+        __u32 i;
+        
+        for (i = 0; i < bootinfo.cnt; i++) {
+                init.tasks[i].addr = bootinfo.tasks[i].addr;
+                init.tasks[i].size = bootinfo.tasks[i].size;
+        }
 }
 

arch/mips32/src/start.S

@@ -183 +183 @@
         lui $sp, %hi(end_stack)
         ori $sp, $sp, %lo(end_stack)
-
+        
+        /* $a1 contains physical address of bootinfo_t */
+        /* $a2 contains size of bootinfo_t */
+        
+        beq $a2, $0, bootinfo_end
+        
         /* Not sure about this, but might be needed for PIC code???? */
         lui $gp, 0x8000
+        
+        lui $a3, 0x8000
+        addu $a1, $a1, $a3
+        
+        lui $a3, %hi(bootinfo)
+        ori $a3, $a3, %lo(bootinfo)
+        
+        bootinfo_loop:
+                
+                lw $v0, 0($a1)
+                sw $v0, 0($a3)
+                
+                addi $a1, $a1, 4
+                addi $a3, $a3, 4
+                addi $a2, $a2, -4
+                
+                bgtz $a2, bootinfo_loop
+                nop
+                
+        bootinfo_end:
         
         jal arch_pre_main