[coreboot] [PATCH 5/6] libpayload address virtualization

-- coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br. Tel.: +49 761 7668825 • Fax: +49 761 7664613 Email: info@coresystems.de • http://www.coresystems.de/ Registergericht: Amtsgericht Freiburg • HRB 7656 Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866 make all drivers relocatable. Per default, an 1:1 mapping is assumed. Patch to add relocation to libpayload will follow. Signed-off-by: Stefan Reinauer stepan@coresystems.de Index: include/libpayload.h =================================================================== --- include/libpayload.h (revision 3519) +++ include/libpayload.h (working copy) @@ -33,6 +33,7 @@ #include <stddef.h> #include <arch/types.h> #include <arch/io.h> +#include <arch/virtual.h> #include <sysinfo.h> #include <stdarg.h> #include <lar.h> Index: include/arch/virtual.h =================================================================== --- include/arch/virtual.h (revision 0) +++ include/arch/virtual.h (revision 0) @@ -0,0 +1,41 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 coresystems GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _ARCH_VIRTUAL_H +#define _ARCH_VIRTUAL_H + +extern unsigned long virtual_offset; + +#define virt_to_phys(virt) ((unsigned long) (virt) + virtual_offset) +#define phys_to_virt(phys) ((void *) ((unsigned long) (phys) - virtual_offset)) + +#define virt_to_bus(addr) virt_to_phys(addr) +#define bus_to_virt(addr) phys_to_virt(addr) + +#endif Index: i386/Makefile.inc =================================================================== --- i386/Makefile.inc (revision 3519) +++ i386/Makefile.inc (working copy) @@ -29,4 +29,5 @@ TARGETS-y += i386/head.S.o i386/main.o i386/sysinfo.o TARGETS-y += i386/timer.o i386/coreboot.o i386/util.S.o -TARGETS-y += i386/exec.S.o +TARGETS-y += i386/exec.S.o i386/virtual.o + Index: i386/virtual.c =================================================================== --- i386/virtual.c (revision 0) +++ i386/virtual.c (revision 0) @@ -0,0 +1,32 @@ +/* + * This file is part of the libpayload project. + * + * Copyright (C) 2008 coresystems GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + + +unsigned long virtual_offset = 0; + Index: i386/coreboot.c =================================================================== --- i386/coreboot.c (revision 3519) +++ i386/coreboot.c (working copy) @@ -152,10 +151,10 @@ int get_coreboot_info(struct sysinfo_t *info) { - int ret = cb_parse_header((void *)0x0, 0x1000, info); + int ret = cb_parse_header(phys_to_virt(0x00000000), 0x1000, info); if (ret != 1) - ret = cb_parse_header((void *)0xf0000, 0x1000, info); + ret = cb_parse_header(phys_to_virt(0x000f0000), 0x1000, info); return (ret == 1) ? 0 : -1; } Index: drivers/video/geode.c =================================================================== --- drivers/video/geode.c (revision 3519) +++ drivers/video/geode.c (working copy) @@ -87,7 +87,10 @@ static unsigned long gpaddr; static unsigned long fbaddr; -#define FB ((unsigned char *) fbaddr) +#define DC (phys_to_virt(dcaddr)) +#define VG (phys_to_virt(vgaddr)) +#define GP (phys_to_virt(gpaddr)) +#define FB ((unsigned char *) phys_to_virt(fbaddr)) static void init_video_mode(void) { @@ -119,32 +122,32 @@ lo &= ~0x38; wrmsr(0x48002001, lo, hi); - writel(0x4758, dcaddr + 0x00); + writel(0x4758, DC + 0x00); - val = readl(dcaddr + 0x00); + val = readl(DC + 0x00); - writel(0, dcaddr + 0x10); - writel(0, dcaddr + 0x14); - writel(0, dcaddr + 0x18); + writel(0, DC + 0x10); + writel(0, DC + 0x14); + writel(0, DC + 0x18); /* Set up the default scaling */ - val = readl(dcaddr + 0xD4); + val = readl(DC + 0xD4); - writel((0x4000 << 16) | 0x4000, dcaddr + 0x90); - writel(0, dcaddr + 0x94); - writel(val & ~0xf3040000, dcaddr + 0xD4); + writel((0x4000 << 16) | 0x4000, DC + 0x90); + writel(0, DC + 0x94); + writel(val & ~0xf3040000, DC + 0xD4); /* Set up the compression (or lack thereof) */ - writel(vga_mode.hactive * vga_mode.vactive | 0x01, dcaddr + 0x2C); + writel(vga_mode.hactive * vga_mode.vactive | 0x01, DC + 0x2C); - val = readl(dcaddr + 0x88); - writel(val & ~0xC00, dcaddr + 0x88); - writel(0, dcaddr + 0x8C); + val = readl(DC + 0x88); + writel(val & ~0xC00, DC + 0x88); + writel(0, DC + 0x8C); /* Set the pitch */ - writel(vga_mode.hactive >> 3, dcaddr + 0x34); - writel((vga_mode.hactive + 7) >> 3, dcaddr + 0x30); + writel(vga_mode.hactive >> 3, DC + 0x34); + writel((vga_mode.hactive + 7) >> 3, DC + 0x30); /* Set up default watermarks */ @@ -154,50 +157,50 @@ /* Write the timings */ writel((vga_mode.hactive - 1) | ((vga_mode.htotal - 1) << 16), - dcaddr + 0x40); + DC + 0x40); writel((vga_mode.hblankstart - 1) | ((vga_mode.hblankend - 1) << 16), - dcaddr + 0x44); + DC + 0x44); writel((vga_mode.hsyncstart - 1) | ((vga_mode.hsyncend - 1) << 16), - dcaddr + 0x48); + DC + 0x48); writel((vga_mode.vactive - 1) | ((vga_mode.vtotal - 1) << 16), - dcaddr + 0x50); + DC + 0x50); writel((vga_mode.vblankstart - 1) | ((vga_mode.vblankend - 1) << 16), - dcaddr + 0x54); + DC + 0x54); writel((vga_mode.vsyncstart - 1) | ((vga_mode.vsyncend - 1) << 16), - dcaddr + 0x58); + DC + 0x58); writel(((vga_mode.hactive - 1) << 16) | (vga_mode.vactive - 1), - dcaddr + 0x5C); + DC + 0x5C); /* Write the VG configuration */ - writel(0x290000F | vga_mode.synccfg, vgaddr + 0x08); + writel(0x290000F | vga_mode.synccfg, VG + 0x08); /* Turn on the dacs */ - val = readl(vgaddr + 0x50); - writel((val & ~0xC00) | 0x01, vgaddr + 0x50); + val = readl(VG + 0x50); + writel((val & ~0xC00) | 0x01, VG + 0x50); /* Set the framebuffer base */ - writel(fbaddr, dcaddr + 0x84); + writel(fbaddr, DC + 0x84); /* Write the final configuration */ - writel(0xB000059, dcaddr + 0x08); - writel(0, dcaddr + 0x0C); - writel(0x2B601, dcaddr + 0x04); + writel(0xB000059, DC + 0x08); + writel(0, DC + 0x0C); + writel(0x2B601, DC + 0x04); } static void geode_set_palette(int entry, unsigned int color) { - writel(entry, dcaddr + 0x70); - writel(color, dcaddr + 0x74); + writel(entry, DC + 0x70); + writel(color, DC + 0x74); } static void geode_scroll_up(void) Index: drivers/video/vga.c =================================================================== --- drivers/video/vga.c (revision 3519) +++ drivers/video/vga.c (working copy) @@ -36,7 +36,7 @@ #define CRTC_DATA 0x3d5 #define VIDEO(_r, _c)\ - ((u16 *) (0xB8000 + ((_r) * (VIDEO_COLS * 2)) + ((_c) * 2))) + ((u16 *) (phys_to_virt(0xB8000) + ((_r) * (VIDEO_COLS * 2)) + ((_c) * 2))) static u8 crtc_read(u8 index) {