diff options
Diffstat (limited to 'src/cpu/amd/geode_gx1')
| -rw-r--r-- | src/cpu/amd/geode_gx1/Kconfig | 33 | ||||
| -rw-r--r-- | src/cpu/amd/geode_gx1/Makefile.inc | 28 | ||||
| -rw-r--r-- | src/cpu/amd/geode_gx1/cpu_setup.inc | 68 | ||||
| -rw-r--r-- | src/cpu/amd/geode_gx1/geode_gx1_init.c | 101 | ||||
| -rw-r--r-- | src/cpu/amd/geode_gx1/gx_setup.inc | 47 |
5 files changed, 277 insertions, 0 deletions
diff --git a/src/cpu/amd/geode_gx1/Kconfig b/src/cpu/amd/geode_gx1/Kconfig new file mode 100644 index 0000000000..4a90c26d6e --- /dev/null +++ b/src/cpu/amd/geode_gx1/Kconfig @@ -0,0 +1,33 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +config CPU_AMD_GEODE_GX1 + bool + +if CPU_AMD_GEODE_GX1 + +config DCACHE_RAM_BASE + hex + default 0xc0000 + +config DCACHE_RAM_SIZE + hex + default 0x01000 + +endif # CPU_AMD_GEODE_GX1 diff --git a/src/cpu/amd/geode_gx1/Makefile.inc b/src/cpu/amd/geode_gx1/Makefile.inc new file mode 100644 index 0000000000..d5bb1ef5ad --- /dev/null +++ b/src/cpu/amd/geode_gx1/Makefile.inc @@ -0,0 +1,28 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +subdirs-y += ../../x86/tsc +subdirs-y += ../../x86/lapic +subdirs-y += ../../x86/cache +subdirs-y += ../../x86/smm +driver-y += geode_gx1_init.c + +cpu_incs += $(src)/cpu/amd/geode_gx1/cpu_setup.inc +cpu_incs += $(src)/cpu/amd/geode_gx1/gx_setup.inc diff --git a/src/cpu/amd/geode_gx1/cpu_setup.inc b/src/cpu/amd/geode_gx1/cpu_setup.inc new file mode 100644 index 0000000000..d701f8d226 --- /dev/null +++ b/src/cpu/amd/geode_gx1/cpu_setup.inc @@ -0,0 +1,68 @@ +/* + freebios/src/northbridge/nsc/gx1/cpu_setup.inc + + Copyright (c) 2002 Christer Weinigel <wingel@hack.org> + + Initialize the GX1 CPU configuration registers +*/ + +/* USES: esi, ecx, eax */ + +#include <cpu/amd/gx1def.h> + + movl %eax, %ebp /* preserve bist */ + +cpu_setup_start: + leal cpu_setup_table, %esi + movl $cpu_setup_len, %ecx + +cpu_setup_loop: + movw (%esi), %ax + addl $2, %esi + outb %al, $0x22 + movb %ah, %al + outb %al, $0x23 + loop cpu_setup_loop + + movb $0xff, %al /* DIR1 -- Identification Register 1 */ + outb %al, $0x22 + inb $0x23, %al + cmpb $0x63, %al /* Revision for GXLV rev 3 */ + jbe cpu_no_ccr4 + + movb $0xe8, %al /* CCR4 */ + outb %al, $0x22 + inb $0x23, %al + orb $0x20, %al /* Enable FPU Fast Mode */ + outb %al, $0x23 + + movb $0xf0, %al /* PCR1 --- Performace Control */ + outb %al, $0x22 + inb $0x23, %al + orb $0x02, %al /* Incrementor on, whatever that is */ + outb %al, $0x23 + + movb $0x20, %al /* PCR0 --- Performace Control */ + outb %al, $0x22 + inb $0x23, %al + orb $0x20, %al /* Must be 1 according to data book */ + orb $0x04, %al /* Incrementor Margin 10 */ + outb %al, $0x23 +cpu_no_ccr4: + + jmp cpu_setup_end + +cpu_setup_table: + .byte 0xc1, 0x00 /* NO SMIs */ + .byte 0xc3, 0x14 /* Enable CPU config register */ + .byte 0x20, 0x00 + .byte 0xb8, GX_BASE>>30 /* Enable GXBASE address */ + .byte 0xc2, 0x00 + .byte 0xe8, 0x98 + .byte 0xc3, 0xf8 /* Enable CPU config register */ +cpu_setup_len = (.-cpu_setup_table)/2 + +cpu_setup_end: + nop + + movl %ebp, %eax /* Restore bist */ diff --git a/src/cpu/amd/geode_gx1/geode_gx1_init.c b/src/cpu/amd/geode_gx1/geode_gx1_init.c new file mode 100644 index 0000000000..60f9473470 --- /dev/null +++ b/src/cpu/amd/geode_gx1/geode_gx1_init.c @@ -0,0 +1,101 @@ +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <string.h> +#include <cpu/cpu.h> +#include <cpu/x86/lapic.h> +#include <cpu/x86/cache.h> + +#if 0 +#include <cpu/amd/gx1def.h> +#include <arch/io.h> + +static void gx1_cpu_setup(void) +{ + unsigned char rreg; + unsigned char cpu_table[] = { + 0xc1, 0x00, /* NO SMIs */ + 0xc3, 0x14, /* Enable CPU config register */ + 0x20, 0x00, /* */ + 0xb8, GX_BASE>>30, /* Enable GXBASE address */ + 0xc2, 0x00, + 0xe8, 0x98, + 0xc3, 0xf8, /* Enable CPU config register */ + 0x00, 0x00 + }; + unsigned char *cPtr = cpu_table; + + while(rreg = *cPtr++) { + unsigned char rval = *cPtr++; + outb(rreg, 0x22); + outb(rval, 0x23); + } + + outb(0xff, 0x22); /* DIR1 -- Identification register 1 */ + if(inb(0x23) > 0x63) { /* Rev greater than R3 */ + outb(0xe8, 0x22); + outb(inb(0x23) | 0x20, 0x23); /* Enable FPU Fast Mode */ + + outb(0xf0, 0x22); + outb(inb(0x23) | 0x02, 0x23); /* Incrementor on */ + + outb(0x20, 0x22); + outb(inb(0x23) | 0x24, 0x23); /* Bit 5 must be on */ + /* Bit 2 Incrementor margin 10 */ + + } +} + +static void gx1_gx_setup(void) +{ +unsigned long gx_setup_table[] = { + GX_BASE + DC_UNLOCK, DC_UNLOCK_MAGIC, + GX_BASE + DC_GENERAL_CFG, 0, + GX_BASE + DC_UNLOCK, 0, + GX_BASE + BC_DRAM_TOP, 0x3fffffff, + GX_BASE + BC_XMAP_1, 0x60, + GX_BASE + BC_XMAP_2, 0, + GX_BASE + BC_XMAP_3, 0, + GX_BASE + MC_BANK_CFG, 0x00700070, + GX_BASE + MC_MEM_CNTRL1, XBUSARB, + GX_BASE + MC_GBASE_ADD, 0xff, + 0, 0 + }; + +unsigned long *gxPtr = gx_setup_table; +unsigned long *gxdPtr; +unsigned long addr; + + while(addr = *gxPtr++) { + gxdPtr = (unsigned long *)addr; + *gxdPtr = *gxPtr++; + } +} +#endif + +static void geode_gx1_init(device_t dev) +{ +#if 0 + gx1_cpu_setup(); + gx1_gx_setup(); +#endif + /* Turn on caching if we haven't already */ + x86_enable_cache(); + + /* Enable the local cpu apics */ + setup_lapic(); +}; + +static struct device_operations cpu_dev_ops = { + .init = geode_gx1_init, +}; + +static struct cpu_device_id cpu_table[] = { + { X86_VENDOR_CYRIX, 0x0540 }, + { 0, 0 }, +}; + +static const struct cpu_driver driver __cpu_driver = { + .ops = &cpu_dev_ops, + .id_table = cpu_table, +}; diff --git a/src/cpu/amd/geode_gx1/gx_setup.inc b/src/cpu/amd/geode_gx1/gx_setup.inc new file mode 100644 index 0000000000..6d0e289120 --- /dev/null +++ b/src/cpu/amd/geode_gx1/gx_setup.inc @@ -0,0 +1,47 @@ +/* + 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 */ |