summaryrefslogtreecommitdiffstats
path: root/debian/grub-extras/915resolution/915resolution.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--debian/grub-extras/915resolution/915resolution.c1081
1 files changed, 1081 insertions, 0 deletions
diff --git a/debian/grub-extras/915resolution/915resolution.c b/debian/grub-extras/915resolution/915resolution.c
new file mode 100644
index 0000000..0091a66
--- /dev/null
+++ b/debian/grub-extras/915resolution/915resolution.c
@@ -0,0 +1,1081 @@
+/* 915resolution - Utility to change vbemodes on the intel
+ * integrated video chipset */
+
+/*
+ * Based on Nathan Coulson's http://nathancoulson.com/proj/eee/grub-1.96-915resolution-0.5.2-3.patch
+ * Oct 10, 2008, Released as 915
+ * Oct 10, 2008, Updated to include support for 945GM thanks to Scot Doyle
+ */
+
+/* Copied from 915 resolution created by steve tomjenovic
+ * 915 resolution was in the public domain.
+ *
+ * All I have done, was make the above program run within
+ * the grub2 environment.
+ *
+ * Some of the checks are still commented, as I did not find
+ * easy replacement for memmem.
+ *
+ * Slightly edited by Nathan Coulson (conathan@gmail.com)
+ */
+
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2003,2007 Free Software Foundation, Inc.
+ * Copyright (C) 2003 NIIBE Yutaka <gniibe@m17n.org>
+ *
+ * GRUB 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+/* 915 resolution by steve tomljenovic
+ *
+ * This was tested only on Sony VGN-FS550. Use at your own risk
+ *
+ * This code is based on the techniques used in :
+ *
+ * - 855patch. Many thanks to Christian Zietz (czietz gmx net)
+ * for demonstrating how to shadow the VBIOS into system RAM
+ * and then modify it.
+ *
+ * - 1280patch by Andrew Tipton (andrewtipton null li).
+ *
+ * - 855resolution by Alain Poirier
+ *
+ * This source code is into the public domain.
+ */
+
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/mm.h>
+#include <grub/err.h>
+#include <grub/dl.h>
+#include <grub/normal.h>
+#include <grub/i386/io.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+#define printf grub_printf
+#define malloc grub_malloc
+#define free grub_free
+#define strcmp grub_strcmp
+#define fprintf(stream, ...) grub_printf(__VA_ARGS__)
+#define strtol(x,y,z) grub_strtoul(x,y,z)
+#define atoi(x) grub_strtoul(x,NULL,10)
+#define assert(x)
+#define memset grub_memset
+#define outl grub_outl
+#define outb grub_outb
+#define inl grub_inl
+#define inb grub_inb
+
+#define NEW(a) ((a *)(malloc(sizeof(a))))
+#define FREE(a) (free(a))
+
+#define VBIOS_START 0xc0000
+#define VBIOS_SIZE 0x10000
+
+#define VBIOS_FILE "/dev/mem"
+
+#define FALSE 0
+#define TRUE 1
+
+#define MODE_TABLE_OFFSET_845G 617
+
+#define RES915_VERSION "0.5.3"
+
+#define ATI_SIGNATURE1 "ATI MOBILITY RADEON"
+#define ATI_SIGNATURE2 "ATI Technologies Inc"
+#define NVIDIA_SIGNATURE "NVIDIA Corp"
+#define INTEL_SIGNATURE "Intel Corp"
+
+#define DEBUG 0
+
+typedef unsigned char * address;
+typedef unsigned char byte;
+typedef unsigned short word;
+typedef unsigned char boolean;
+typedef unsigned int cardinal;
+
+typedef enum {
+ CT_UNKWN, CT_830, CT_845G, CT_855GM, CT_865G, CT_915G, CT_915GM, CT_945G, CT_945GM, CT_945GME,
+ CT_946GZ, CT_G965, CT_Q965, CT_965GM, CT_G33, CT_Q33, CT_Q35, CT_500GMA,
+ CT_GM45, CT_GMA3150, CT_HD3000
+} chipset_type;
+
+const char *const chipset_type_names[] = {
+ "UNKNOWN", "830", "845G", "855GM", "865G", "915G", "915GM", "945G", "945GM", "945GME",
+ "946GZ", "G965", "Q965", "965GM", "G33", "Q33", "Q35", "500GMA",
+ "GM45", "GMA3150", "HD3000"
+};
+
+typedef enum {
+ BT_UNKWN, BT_1, BT_2, BT_3
+} bios_type;
+
+const char *const bios_type_names[] = {"UNKNOWN", "TYPE 1", "TYPE 2", "TYPE 3"};
+
+int freqs[] = { 60, 75, 85 };
+
+typedef struct {
+ byte mode;
+ byte bits_per_pixel;
+ word resolution;
+ byte unknown;
+} __attribute__((packed)) vbios_mode;
+
+typedef struct {
+ byte unknow1[2];
+ byte x1;
+ byte x_total;
+ byte x2;
+ byte y1;
+ byte y_total;
+ byte y2;
+} __attribute__((packed)) vbios_resolution_type1;
+
+typedef struct {
+ unsigned long clock;
+
+ word x1;
+ word htotal;
+ word x2;
+ word hblank;
+ word hsyncstart;
+ word hsyncend;
+
+ word y1;
+ word vtotal;
+ word y2;
+ word vblank;
+ word vsyncstart;
+ word vsyncend;
+} __attribute__((packed)) vbios_modeline_type2;
+
+typedef struct {
+ byte xchars;
+ byte ychars;
+ byte unknown[4];
+
+ vbios_modeline_type2 modelines[];
+} __attribute__((packed)) vbios_resolution_type2;
+
+typedef struct {
+ unsigned long clock;
+
+ word x1;
+ word htotal;
+ word x2;
+ word hblank;
+ word hsyncstart;
+ word hsyncend;
+
+ word y1;
+ word vtotal;
+ word y2;
+ word vblank;
+ word vsyncstart;
+ word vsyncend;
+
+ word timing_h;
+ word timing_v;
+
+ byte unknown[6];
+} __attribute__((packed)) vbios_modeline_type3;
+
+typedef struct {
+ unsigned char unknown[6];
+
+ vbios_modeline_type3 modelines[];
+} __attribute__((packed)) vbios_resolution_type3;
+
+
+typedef struct {
+ cardinal chipset_id;
+ chipset_type chipset;
+ bios_type bios;
+
+ int bios_fd;
+ address bios_ptr;
+
+ vbios_mode * mode_table;
+ cardinal mode_table_size;
+
+ byte b1, b2;
+
+ boolean unlocked;
+} vbios_map;
+
+
+static cardinal get_chipset_id(void) {
+ outl(0x80000000, 0xcf8);
+ return inl(0xcfc);
+}
+
+static chipset_type get_chipset(cardinal id) {
+ chipset_type type;
+
+ switch (id) {
+ case 0x35758086:
+ type = CT_830;
+ break;
+
+ case 0x25608086:
+ type = CT_845G;
+ break;
+
+ case 0x35808086:
+ type = CT_855GM;
+ break;
+
+ case 0x25708086:
+ type = CT_865G;
+ break;
+
+ case 0x25808086:
+ type = CT_915G;
+ break;
+
+ case 0x25908086:
+ type = CT_915GM;
+ break;
+
+ case 0x27708086:
+ type = CT_945G;
+ break;
+
+ case 0x27a08086:
+ type = CT_945GM;
+ break;
+
+ case 0x27ac8086:
+ type = CT_945GME;
+ break;
+
+ case 0x29708086:
+ type = CT_946GZ;
+ break;
+
+ case 0x29a08086:
+ type = CT_G965;
+ break;
+
+ case 0x29908086:
+ type = CT_Q965;
+ break;
+
+ case 0x2a008086:
+ type = CT_965GM;
+ break;
+
+ case 0x29c08086:
+ type = CT_G33;
+ break;
+
+ case 0x29b08086:
+ type = CT_Q35;
+ break;
+
+ case 0x29d08086:
+ type = CT_Q33;
+ break;
+
+ case 0x81008086:
+ type = CT_500GMA;
+ break;
+
+ case 0xa0008086:
+ type = CT_GMA3150;
+ break;
+
+ case 0xa0108086:
+ type = CT_GMA3150;
+ break;
+
+ case 0x01048086:
+ type = CT_HD3000;
+ break;
+
+ case 0x2a408086:
+ type = CT_GM45;
+ break;
+
+ case 0x2a018086:
+ type = CT_965GM;
+ break;
+
+ case 0x2a028086:
+ type = CT_965GM;
+ break;
+
+ default:
+ type = CT_UNKWN;
+ break;
+ }
+
+ return type;
+}
+
+
+static vbios_resolution_type1 * map_type1_resolution(vbios_map * map, word res) {
+ vbios_resolution_type1 * ptr = ((vbios_resolution_type1*)(map->bios_ptr + res));
+ return ptr;
+}
+
+static vbios_resolution_type2 * map_type2_resolution(vbios_map * map, word res) {
+ vbios_resolution_type2 * ptr = ((vbios_resolution_type2*)(map->bios_ptr + res));
+ return ptr;
+}
+
+static vbios_resolution_type3 * map_type3_resolution(vbios_map * map, word res) {
+ vbios_resolution_type3 * ptr = ((vbios_resolution_type3*)(map->bios_ptr + res));
+ return ptr;
+}
+
+
+static boolean detect_bios_type(vbios_map * map, int entry_size) {
+ unsigned i;
+ short int r1, r2;
+
+ r1 = r2 = 32000;
+
+ for (i=0; i < map->mode_table_size; i++) {
+ if (map->mode_table[i].resolution <= r1) {
+ r1 = map->mode_table[i].resolution;
+ }
+ else {
+ if (map->mode_table[i].resolution <= r2) {
+ r2 = map->mode_table[i].resolution;
+ }
+ }
+
+ /*printf("r1 = %d r2 = %d\n", r1, r2);*/
+ }
+
+ return (r2-r1-6) % entry_size == 0;
+}
+
+
+static void close_vbios(vbios_map * map);
+
+
+static vbios_map * open_vbios(chipset_type forced_chipset) {
+ vbios_map * map = NEW(vbios_map);
+ memset (map, 0, sizeof(vbios_map));
+
+ /*
+ * Determine chipset
+ */
+
+ if (forced_chipset == CT_UNKWN) {
+ map->chipset_id = get_chipset_id();
+
+ map->chipset = get_chipset(map->chipset_id);
+ }
+ else if (forced_chipset != CT_UNKWN) {
+ map->chipset = forced_chipset;
+ }
+ else {
+ map->chipset = CT_915GM;
+ }
+
+ /*
+ * Map the video bios to memory
+ */
+
+ map->bios_ptr = (unsigned char *) VBIOS_START;
+
+#if 0
+ /*
+ * check if we have ATI Radeon
+ */
+
+ if (memmem(map->bios_ptr, VBIOS_SIZE, ATI_SIGNATURE1, strlen(ATI_SIGNATURE1)) ||
+ memmem(map->bios_ptr, VBIOS_SIZE, ATI_SIGNATURE2, strlen(ATI_SIGNATURE2)) ) {
+ fprintf(stderr, "ATI chipset detected. 915resolution only works with Intel 800/900 series graphic chipsets.\n");
+ close(map->bios_fd);
+ exit(2);
+ }
+
+ /*
+ * check if we have NVIDIA
+ */
+
+ if (memmem(map->bios_ptr, VBIOS_SIZE, NVIDIA_SIGNATURE, strlen(NVIDIA_SIGNATURE))) {
+ fprintf(stderr, "NVIDIA chipset detected. 915resolution only works with Intel 800/900 series graphic chipsets.\n");
+ close(map->bios_fd);
+ exit(2);
+ }
+
+ /*
+ * check if we have Intel
+ */
+
+ if (map->chipset == CT_UNKWN && memmem(map->bios_ptr, VBIOS_SIZE, INTEL_SIGNATURE, strlen(INTEL_SIGNATURE))) {
+ fprintf(stderr, "Intel chipset detected. However, 915resolution was unable to determine the chipset type.\n");
+
+ fprintf(stderr, "Chipset Id: %x\n", map->chipset_id);
+
+ fprintf(stderr, "Please report this problem to stomljen@yahoo.com\n");
+
+ close_vbios(map);
+ exit(2);
+ }
+#endif
+
+ /*
+ * check for others
+ */
+
+ if (map->chipset == CT_UNKWN) {
+ fprintf(stderr, "Unknown chipset type and unrecognized bios.\n");
+ fprintf(stderr, "915resolution only works with Intel 800/900 series graphic chipsets.\n");
+
+ fprintf(stderr, "Chipset Id: %x\n", map->chipset_id);
+ close_vbios(map);
+ return 0;
+ }
+
+ /*
+ * Figure out where the mode table is
+ */
+
+ {
+ address p = map->bios_ptr + 16;
+ address limit = map->bios_ptr + VBIOS_SIZE - (3 * sizeof(vbios_mode));
+
+ while (p < limit && map->mode_table == 0) {
+ vbios_mode * mode_ptr = (vbios_mode *) p;
+
+ if (((mode_ptr[0].mode & 0xf0) == 0x30) && ((mode_ptr[1].mode & 0xf0) == 0x30) &&
+ ((mode_ptr[2].mode & 0xf0) == 0x30) && ((mode_ptr[3].mode & 0xf0) == 0x30)) {
+
+ map->mode_table = mode_ptr;
+ }
+
+ p++;
+ }
+
+ if (map->mode_table == 0) {
+ fprintf(stderr, "Unable to locate the mode table.\n");
+ fprintf(stderr, "Please run the program 'dump_bios' as root and\n");
+ fprintf(stderr, "email the file 'vbios.dmp' to stomljen@yahoo.com.\n");
+
+ fprintf(stderr, "Chipset: %s\n", chipset_type_names[map->chipset]);
+ close_vbios(map);
+ return 0;
+ }
+ }
+
+ /*
+ * Determine size of mode table
+ */
+
+ {
+ vbios_mode * mode_ptr = map->mode_table;
+
+ while (mode_ptr->mode != 0xff) {
+ map->mode_table_size++;
+ mode_ptr++;
+ }
+ }
+
+ /*
+ * Figure out what type of bios we have
+ * order of detection is important
+ */
+
+ if (detect_bios_type(map, sizeof(vbios_modeline_type3))) {
+ map->bios = BT_3;
+ }
+ else if (detect_bios_type(map, sizeof(vbios_modeline_type2))) {
+ map->bios = BT_2;
+ }
+ else if (detect_bios_type(map, sizeof(vbios_resolution_type1))) {
+ map->bios = BT_1;
+ }
+ else {
+ fprintf(stderr, "Unable to determine bios type.\n");
+ fprintf(stderr, "Please run the program 'dump_bios' as root and\n");
+ fprintf(stderr, "email the file 'vbios.dmp' to stomljen@yahoo.com.\n");
+
+ fprintf(stderr, "Chipset: %s\n", chipset_type_names[map->chipset]);
+ fprintf(stderr, "Mode Table Offset: $C0000 + $%x\n", ((cardinal)map->mode_table) - ((cardinal)map->bios_ptr));
+ fprintf(stderr, "Mode Table Entries: %u\n", map->mode_table_size);
+ return 0;
+ }
+
+ return map;
+}
+
+static void close_vbios(vbios_map * map) {
+ assert(!map->unlocked);
+
+ FREE(map);
+}
+
+static void unlock_vbios(vbios_map * map) {
+
+ assert(!map->unlocked);
+
+ map->unlocked = TRUE;
+
+ switch (map->chipset) {
+ case CT_UNKWN:
+ break;
+ case CT_830:
+ case CT_855GM:
+ outl(0x8000005a, 0xcf8);
+ map->b1 = inb(0xcfe);
+
+ outl(0x8000005a, 0xcf8);
+ outb(0x33, 0xcfe);
+ break;
+ case CT_845G:
+ case CT_865G:
+ case CT_915G:
+ case CT_915GM:
+ case CT_945G:
+ case CT_945GM:
+ case CT_945GME:
+ case CT_946GZ:
+ case CT_G965:
+ case CT_Q965:
+ case CT_965GM:
+ case CT_G33:
+ case CT_Q35:
+ case CT_Q33:
+ case CT_500GMA:
+ case CT_GM45:
+ case CT_GMA3150:
+ case CT_HD3000:
+ outl(0x80000090, 0xcf8);
+ map->b1 = inb(0xcfd);
+ map->b2 = inb(0xcfe);
+
+ outl(0x80000090, 0xcf8);
+ outb(0x33, 0xcfd);
+ outb(0x33, 0xcfe);
+ break;
+ }
+
+#if DEBUG
+ {
+ cardinal t = inl(0xcfc);
+ printf("unlock PAM: (0x%08x)\n", t);
+ }
+#endif
+}
+
+static void relock_vbios(vbios_map * map) {
+
+ assert(map->unlocked);
+ map->unlocked = FALSE;
+
+ switch (map->chipset) {
+ case CT_UNKWN:
+ break;
+ case CT_830:
+ case CT_855GM:
+ outl(0x8000005a, 0xcf8);
+ outb(map->b1, 0xcfe);
+ break;
+ case CT_845G:
+ case CT_865G:
+ case CT_915G:
+ case CT_915GM:
+ case CT_945G:
+ case CT_945GM:
+ case CT_945GME:
+ case CT_946GZ:
+ case CT_G965:
+ case CT_Q965:
+ case CT_965GM:
+ case CT_G33:
+ case CT_Q35:
+ case CT_Q33:
+ case CT_500GMA:
+ case CT_GM45:
+ case CT_GMA3150:
+ case CT_HD3000:
+ outl(0x80000090, 0xcf8);
+ outb(map->b1, 0xcfd);
+ outb(map->b2, 0xcfe);
+ break;
+ }
+
+#if DEBUG
+ {
+ cardinal t = inl(0xcfc);
+ printf("relock PAM: (0x%08x)\n", t);
+ }
+#endif
+}
+
+
+static void list_modes(vbios_map *map, cardinal raw) {
+ cardinal i, x, y;
+
+ for (i=0; i < map->mode_table_size; i++) {
+ switch(map->bios) {
+ case BT_1:
+ {
+ vbios_resolution_type1 * res = map_type1_resolution(map, map->mode_table[i].resolution);
+
+ x = ((((cardinal) res->x2) & 0xf0) << 4) | res->x1;
+ y = ((((cardinal) res->y2) & 0xf0) << 4) | res->y1;
+
+ if (x != 0 && y != 0) {
+ printf("Mode %02x : %dx%d, %d bits/pixel\n", map->mode_table[i].mode, x, y, map->mode_table[i].bits_per_pixel);
+ }
+
+ if (raw)
+ {
+ printf("Mode %02x (raw) :\n\t%02x %02x\n\t%02x\n\t%02x\n\t%02x\n\t%02x\n\t%02x\n\t%02x\n", map->mode_table[i].mode, res->unknow1[0],res->unknow1[1], res->x1,res->x_total,res->x2,res->y1,res->y_total,res->y2);
+ }
+
+ }
+ break;
+ case BT_2:
+ {
+ vbios_resolution_type2 * res = map_type2_resolution(map, map->mode_table[i].resolution);
+
+ x = res->modelines[0].x1+1;
+ y = res->modelines[0].y1+1;
+
+ if (x != 0 && y != 0) {
+ printf("Mode %02x : %dx%d, %d bits/pixel\n", map->mode_table[i].mode, x, y, map->mode_table[i].bits_per_pixel);
+ }
+ }
+ break;
+ case BT_3:
+ {
+ vbios_resolution_type3 * res = map_type3_resolution(map, map->mode_table[i].resolution);
+
+ x = res->modelines[0].x1+1;
+ y = res->modelines[0].y1+1;
+
+ if (x != 0 && y != 0) {
+ printf("Mode %02x : %dx%d, %d bits/pixel\n", map->mode_table[i].mode, x, y, map->mode_table[i].bits_per_pixel);
+ }
+ }
+ break;
+ case BT_UNKWN:
+ break;
+ }
+ }
+}
+
+static void gtf_timings(int x, int y, int freq,
+ unsigned long *clock,
+ word *hsyncstart, word *hsyncend, word *hblank,
+ word *vsyncstart, word *vsyncend, word *vblank)
+{
+ int hbl, vbl, vfreq;
+
+ /*
+ (y+1)/(20000.0/(11*freq) - 1) + 0.5
+ = ((y+1) * (11*freq))/(20000.0 - (11*freq)) + 0.5
+ = ((y+1) * (11*freq) + 10000.0 - (11*freq) / 2)/(20000.0 - (11*freq))
+ = ((y+1) * (11*freq) + 10000.0 - 5 * freq - (freq + 1) / 2)/(20000.0 - (11*freq))
+*/
+ vbl = y + 1 +
+ grub_divmod64 (((y+1) * (11*(long long)freq) + 10000 - 5 * (long long)freq
+ - (freq + 1) / 2),
+ (20000 - (11*(long long)freq)), 0);
+ vfreq = vbl * freq;
+ /*
+ (x * (30.0 - 300000.0 / vfreq) /
+ (70.0 + 300000.0 / vfreq) / 16.0 + 0.5)
+ = ((x * (30.0 - 300000.0 / vfreq) /
+ (70.0 + 300000.0 / vfreq) + 8) / 16)
+ = ((x * (30.0 * vfreq - 300000.0) /
+ (70.0 * vfreq + 300000.0) + 8) / 16)
+ = (((x * (30 * vfreq - 300000)) /
+ (70 * vfreq + 300000) + 8) / 16)
+ */
+ hbl = 16 * (int)((grub_divmod64((x * (30 * (long long)vfreq - 300000)),
+ (70 * (long long)vfreq + 300000), 0)
+ + 8) / 16);
+
+ *vsyncstart = y;
+ *vsyncend = y + 3;
+ *vblank = vbl - 1;
+ *hsyncstart = x + hbl / 2 - (x + hbl + 50) / 100 * 8 - 1;
+ *hsyncend = x + hbl / 2 - 1;
+ *hblank = x + hbl - 1;
+ *clock = (x + hbl) * vfreq / 1000;
+}
+
+static void set_mode(vbios_map * map, cardinal mode, cardinal x, cardinal y, cardinal bp, cardinal htotal, cardinal vtotal) {
+ int xprev, yprev;
+ cardinal i, j;
+
+ for (i=0; i < map->mode_table_size; i++) {
+ if (map->mode_table[i].mode == mode) {
+ switch(map->bios) {
+ case BT_1:
+ {
+ vbios_resolution_type1 * res = map_type1_resolution(map, map->mode_table[i].resolution);
+
+ if (bp) {
+ map->mode_table[i].bits_per_pixel = bp;
+ }
+
+ res->x2 = (htotal?(((htotal-x) >> 8) & 0x0f) : (res->x2 & 0x0f)) | ((x >> 4) & 0xf0);
+ res->x1 = (x & 0xff);
+
+ res->y2 = (vtotal?(((vtotal-y) >> 8) & 0x0f) : (res->y2 & 0x0f)) | ((y >> 4) & 0xf0);
+ res->y1 = (y & 0xff);
+ if (htotal)
+ res->x_total = ((htotal-x) & 0xff);
+
+ if (vtotal)
+ res->y_total = ((vtotal-y) & 0xff);
+ }
+ break;
+ case BT_2:
+ {
+ vbios_resolution_type2 * res = map_type2_resolution(map, map->mode_table[i].resolution);
+
+ res->xchars = x / 8;
+ res->ychars = y / 16 - 1;
+ xprev = res->modelines[0].x1;
+ yprev = res->modelines[0].y1;
+
+ for(j=0; j < 3; j++) {
+ vbios_modeline_type2 * modeline = &res->modelines[j];
+
+ if (modeline->x1 == xprev && modeline->y1 == yprev) {
+ unsigned long clock;
+ word hsyncstart, hsyncend, hblank;
+ word vsyncstart, vsyncend, vblank;
+
+ modeline->x1 = modeline->x2 = x-1;
+ modeline->y1 = modeline->y2 = y-1;
+
+ gtf_timings(x, y, freqs[j], &clock,
+ &hsyncstart, &hsyncend, &hblank,
+ &vsyncstart, &vsyncend, &vblank);
+ modeline->clock = clock;
+ modeline->hsyncstart = hsyncstart;
+ modeline->hsyncend = hsyncend;
+ modeline->hblank = hblank;
+ modeline->vsyncstart = vsyncstart;
+ modeline->vsyncend = vsyncend;
+ modeline->vblank = vblank;
+
+ if (htotal)
+ modeline->htotal = htotal;
+ else
+ modeline->htotal = modeline->hblank;
+
+ if (vtotal)
+ modeline->vtotal = vtotal;
+ else
+ modeline->vtotal = modeline->vblank;
+ }
+ }
+ }
+ break;
+ case BT_3:
+ {
+ vbios_resolution_type3 * res = map_type3_resolution(map, map->mode_table[i].resolution);
+
+ xprev = res->modelines[0].x1;
+ yprev = res->modelines[0].y1;
+
+ for (j=0; j < 3; j++) {
+ vbios_modeline_type3 * modeline = &res->modelines[j];
+
+ if (modeline->x1 == xprev && modeline->y1 == yprev) {
+ unsigned long clock;
+ word hsyncstart, hsyncend, hblank;
+ word vsyncstart, vsyncend, vblank;
+
+ modeline->x1 = modeline->x2 = x-1;
+ modeline->y1 = modeline->y2 = y-1;
+
+ gtf_timings(x, y, freqs[j], &clock,
+ &hsyncstart, &hsyncend, &hblank,
+ &vsyncstart, &vsyncend, &vblank);
+ modeline->clock = clock;
+ modeline->hsyncstart = hsyncstart;
+ modeline->hsyncend = hsyncend;
+ modeline->hblank = hblank;
+ modeline->vsyncstart = vsyncstart;
+ modeline->vsyncend = vsyncend;
+ modeline->vblank = vblank;
+
+ if (htotal)
+ modeline->htotal = htotal;
+ else
+ modeline->htotal = modeline->hblank;
+ if (vtotal)
+ modeline->vtotal = vtotal;
+ else
+ modeline->vtotal = modeline->vblank;
+
+ modeline->timing_h = y-1;
+ modeline->timing_v = x-1;
+ }
+ }
+ }
+ break;
+ case BT_UNKWN:
+ break;
+ }
+ }
+ }
+}
+
+static void display_map_info(vbios_map * map) {
+ printf("Chipset: %s\n", chipset_type_names[map->chipset]);
+ printf("BIOS: %s\n", bios_type_names[map->bios]);
+
+ printf("Mode Table Offset: $C0000 + $%x\n", ((cardinal)map->mode_table) - ((cardinal)map->bios_ptr));
+ printf("Mode Table Entries: %u\n", map->mode_table_size);
+}
+
+
+static int parse_args(cardinal argc, char *argv[], chipset_type *forced_chipset,
+ cardinal *list, cardinal *mode, cardinal *x, cardinal *y,
+ cardinal *bp, cardinal *raw, cardinal *htotal,
+ cardinal *vtotal, cardinal *quiet) {
+ cardinal index = 0;
+
+ *list = *mode = *x = *y = *raw = *htotal = *vtotal = 0;
+ *bp = 0;
+ *quiet = 0;
+
+ *forced_chipset = CT_UNKWN;
+
+ if ((argc > index) && !strcmp(argv[index], "-q")) {
+ *quiet = 1;
+ index++;
+
+ if(argc<=index) {
+ return 0;
+ }
+ }
+
+ if ((argc > index) && !strcmp(argv[index], "-c")) {
+ index++;
+
+ if(argc<=index) {
+ return 0;
+ }
+
+ if (!strcmp(argv[index], "845")) {
+ *forced_chipset = CT_845G;
+ }
+ else if (!strcmp(argv[index], "855")) {
+ *forced_chipset = CT_855GM;
+ }
+ else if (!strcmp(argv[index], "865")) {
+ *forced_chipset = CT_865G;
+ }
+ else if (!strcmp(argv[index], "915G")) {
+ *forced_chipset = CT_915G;
+ }
+ else if (!strcmp(argv[index], "915GM")) {
+ *forced_chipset = CT_915GM;
+ }
+ else if (!strcmp(argv[index], "945G")) {
+ *forced_chipset = CT_945G;
+ }
+ else if (!strcmp(argv[index], "945GM")) {
+ *forced_chipset = CT_945GM;
+ }
+ else if (!strcmp(argv[index], "945GME")) {
+ *forced_chipset = CT_945GME;
+ }
+ else if (!strcmp(argv[index], "946GZ")) {
+ *forced_chipset = CT_946GZ;
+ }
+ else if (!strcmp(argv[index], "G965")) {
+ *forced_chipset = CT_G965;
+ }
+ else if (!strcmp(argv[index], "Q965")) {
+ *forced_chipset = CT_Q965;
+ }
+ else if (!strcmp(argv[index], "965GM")) {
+ *forced_chipset = CT_965GM;
+ }
+ else if (!strcmp(argv[index], "G33")) {
+ *forced_chipset = CT_G33;
+ }
+ else if (!strcmp(argv[index], "Q35")) {
+ *forced_chipset = CT_Q35;
+ }
+ else if (!strcmp(argv[index], "Q33")) {
+ *forced_chipset = CT_Q33;
+ }
+ else if (!strcmp(argv[index], "500GMA")) {
+ *forced_chipset = CT_500GMA;
+ }
+ else if (!strcmp(argv[index], "GM45")) {
+ *forced_chipset = CT_GM45;
+ }
+ else if (!strcmp(argv[index], "GMA3150")) {
+ *forced_chipset = CT_GMA3150;
+ }
+ else if (!strcmp(argv[index], "HD3000")) {
+ *forced_chipset = CT_HD3000;
+ }
+ else {
+ *forced_chipset = CT_UNKWN;
+ }
+
+ index++;
+
+ if (argc<=index) {
+ return 0;
+ }
+ }
+
+ if ((argc > index) && !strcmp(argv[index], "-l")) {
+ *list = 1;
+ index++;
+
+ if(argc<=index) {
+ return 0;
+ }
+ }
+
+ if ((argc > index) && !strcmp(argv[index], "-r")) {
+ *raw = 1;
+ index++;
+
+ if(argc<=index) {
+ return 0;
+ }
+ }
+
+ if (argc-index < 3 || argc-index > 6) {
+ return -1;
+ }
+
+ *mode = (cardinal) strtol(argv[index], NULL, 16);
+ *x = (cardinal)atoi(argv[index+1]);
+ *y = (cardinal)atoi(argv[index+2]);
+
+
+ if (argc-index > 3) {
+ *bp = (cardinal)atoi(argv[index+3]);
+ }
+ else {
+ *bp = 0;
+ }
+
+ if (argc-index > 4) {
+ *htotal = (cardinal)atoi(argv[index+4]);
+ }
+ else {
+ *htotal = 0;
+ }
+
+ if (argc-index > 5) {
+ *vtotal = (cardinal)atoi(argv[index+5]);
+ }
+ else {
+ *vtotal = 0;
+ }
+
+ return 0;
+}
+
+static void usage(void) {
+ printf("Usage: 915resolution [-q] [-c chipset] [-l] [mode X Y] [bits/pixel] [htotal] [vtotal]\n");
+ printf(" Set the resolution to XxY for a video mode\n");
+ printf(" Bits per pixel are optional. htotal/vtotal settings are additionally optional.\n");
+ printf(" Options:\n");
+ printf(" -q don't show any normal messages\n");
+ printf(" -c force chipset type (THIS IS USED FOR DEBUG PURPOSES)\n");
+ printf(" -l display the modes found in the video BIOS\n");
+ printf(" -r display the modes found in the video BIOS in raw mode (THIS IS USED FOR DEBUG PURPOSES)\n");
+}
+
+static int main_915 (int argc, char *argv[])
+{
+ vbios_map * map;
+ cardinal list, mode, x, y, bp, raw, htotal, vtotal;
+ cardinal quiet;
+ chipset_type forced_chipset;
+
+ if (parse_args(argc, argv, &forced_chipset, &list, &mode,
+ &x, &y, &bp, &raw, &htotal, &vtotal, &quiet) == -1) {
+ printf("Intel 800/900 Series VBIOS Hack : version %s\n\n",
+ RES915_VERSION);
+ usage();
+ return 2;
+ }
+
+ if (!quiet)
+ printf("Intel 800/900 Series VBIOS Hack : version %s\n\n",
+ RES915_VERSION);
+
+ map = open_vbios(forced_chipset);
+ if (!quiet)
+ {
+ display_map_info(map);
+ printf("\n");
+ }
+
+ if (list) {
+ list_modes(map, raw);
+ }
+
+ if (mode!=0 && x!=0 && y!=0) {
+ unlock_vbios(map);
+
+ set_mode(map, mode, x, y, bp, htotal, vtotal);
+
+ relock_vbios(map);
+
+ printf("Patch mode %02x to resolution %dx%d complete\n", mode, x, y);
+
+ if (list) {
+ list_modes(map, raw);
+ }
+ }
+
+ close_vbios(map);
+
+ return 0;
+}
+
+
+
+
+
+static grub_err_t
+grub_cmd_915resolution (grub_command_t cmd __attribute__ ((unused)),
+ int argc, char *argv[])
+{
+ return main_915 (argc, argv);
+}
+
+static grub_command_t cmd;
+
+GRUB_MOD_INIT(915resolution)
+{
+ cmd = grub_register_command ("915resolution", grub_cmd_915resolution,
+ "915resolution", "Intel VBE editor");
+}
+
+GRUB_MOD_FINI(915resolution)
+{
+ grub_unregister_command (cmd);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-30 04:06:23 +0000