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MIPS:Target support for qemu -M mips

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With serial, NE2000, IDE support. Tested in big-endian mode.
Memory size hard-coded to 128M for now, so don't play with
the -m option.

Signed-off-by: Vlad Lungu <vlad@comsys.ro>
This commit is contained in:
Vlad Lungu 2008-01-16 19:27:51 +02:00 • committed by Shinya Kuribayashi
parent 4c9e98ace7
commit 0764c164fe
11 changed files with 482 additions and 0 deletions
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41
board/qemu-mips/lowlevel_init.S Normal file
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/* Memory sub-system initialization code */
#include <config.h>
#include <version.h>
#include <asm/regdef.h>
#include <asm/mipsregs.h>
.text
.set noreorder
.set mips32
.globl lowlevel_init
lowlevel_init:
/*
* Step 2) Establish Status Register
* (set BEV, clear ERL, clear EXL, clear IE)
*/
li t1, 0x00400000
mtc0 t1, CP0_STATUS
/*
* Step 3) Establish CP0 Config0
* (set K0=3)
*/
li t1, 0x00000003
mtc0 t1, CP0_CONFIG
/*
* Step 7) Establish Cause
* (set IV bit)
*/
li t1, 0x00800000
mtc0 t1, CP0_CAUSE
/* Establish Wired (and Random) */
mtc0 zero, CP0_WIRED
nop
j ra
nop