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/*
freebios/src/northbridge/nsc/gx1/gx_setup.inc
Copyright (c) 2002 Christer Weinigel <wingel@hack.org>
Setup the GX_BASE registers on a National Semiconductor Geode CPU
*/
#include <cpu/amd/gx1def.h>
movl %eax, %ebp /* Preserve bist */
gx_setup_start:
leal gx_setup_table, %esi
movl $gx_setup_len, %ecx
movl $GX_BASE, %edi
gx_setup_loop:
movw (%esi), %di /* Only read the low word of address */
addl $4, %esi
movl (%esi), %eax /* Data */
addl $4, %esi
movl %eax, (%edi)
loop gx_setup_loop
jmp gx_setup_end
gx_setup_table:
/* Allow writes to config registers */
.long DC_UNLOCK, DC_UNLOCK_MAGIC
.long DC_GENERAL_CFG, 0
.long DC_UNLOCK, 0
.long BC_DRAM_TOP, 0x3fffffff
.long BC_XMAP_1, 0x60
.long BC_XMAP_2, 0
.long BC_XMAP_3, 0
.long MC_BANK_CFG, 0x00700070 /* No DIMMS installed */
.long MC_MEM_CNTRL1, XBUSARB
.long MC_GBASE_ADD, 0x7ff /* Almost 1GB */
gx_setup_len = (.-gx_setup_table)/8
gx_setup_end:
nop
movl %ebp, %eax /* Restore bist */
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