git.joshuawise.com / netwatch.git / blame
| Commit | Line | Data |
|---|---|---|
| 3c4e084d JP |
1 | /* vga-overlay.c |
| 2 | * VGA text overlay code | |
| 3 | * NetWatch system management mode administration console | |
| 4 | * | |
| 5 | * Copyright (c) 2008 Jacob Potter and Joshua Wise. All rights reserved. | |
| 6 | * This program is free software; you can redistribute and/or modify it under | |
| 7 | * the terms found in the file LICENSE in the root of this source tree. | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 9e2a82e4 JP |
11 | #include <io.h> |
| 12 | #include <smram.h> | |
| 13 | #include <video_defines.h> | |
| 14 | #include <minilib.h> | |
| 15 | #include <stdarg.h> | |
| 16 | #include <output.h> | |
| bf47740a | 17 | #include <serial.h> |
| 9e2a82e4 JP |
18 | |
| 19 | #define LOGLEN 96 | |
| 20 | #define LOG_ONSCREEN 4 | |
| 21 | ||
| 22 | static char logents[LOGLEN][41] = {{0}}; | |
| 23 | static int prodptr = 0; | |
| 24 | static int flush_imm = 0; | |
| 25 | ||
| 26 | #define VRAM_BASE 0xA0000UL | |
| 27 | #define TEXT_CONSOLE_OFFSET 0x18000UL | |
| 28 | ||
| 29 | #define TEXT_CONSOLE_BASE (VRAM_BASE + TEXT_CONSOLE_OFFSET) | |
| 30 | ||
| 31 | #define COLOR 0x1F | |
| 32 | ||
| 33 | void vga_flush_imm(int imm) | |
| 34 | { | |
| 35 | flush_imm = imm; | |
| 36 | } | |
| 37 | ||
| 38 | static unsigned char vga_read(unsigned char idx) | |
| 39 | { | |
| 40 | outb(CRTC_IDX_REG, idx); | |
| 41 | return inb(CRTC_DATA_REG); | |
| 42 | } | |
| 43 | ||
| 44 | static char * vga_base() | |
| 45 | { | |
| 46 | return (char *) ( | |
| 47 | TEXT_CONSOLE_BASE | |
| 48 | + (((unsigned int) vga_read(CRTC_START_ADDR_MSB_IDX)) << 9) | |
| 49 | + (((unsigned int) vga_read(CRTC_START_ADDR_LSB_IDX)) << 1) | |
| 50 | ); | |
| 51 | } | |
| 52 | ||
| a02e8abd | 53 | void strblit(char *src, int row, int col, int fill) |
| 9e2a82e4 JP |
54 | { |
| 55 | char *destp = vga_base() + row * 80 * 2 + col * 2; | |
| 56 | outb(0x80, 0x3C); | |
| 57 | smram_state_t old_state = smram_save_state(); | |
| 58 | outb(0x80, 0x3D); | |
| 59 | ||
| 60 | smram_aseg_set_state(SMRAM_ASEG_SMMCODE); | |
| 61 | outb(0x80, 0x3E); | |
| 62 | ||
| 63 | while (*src) | |
| 64 | { | |
| 65 | *(destp++) = *(src++); | |
| 66 | *(destp++) = COLOR; | |
| a02e8abd | 67 | col++; |
| 9e2a82e4 | 68 | } |
| a02e8abd JW |
69 | if (fill) |
| 70 | while (col < 80) | |
| 71 | { | |
| 72 | *(destp++) = ' '; | |
| 73 | *(destp++) = COLOR; | |
| 74 | col++; | |
| 75 | } | |
| 9e2a82e4 JP |
76 | |
| 77 | outb(0x80, 0x3F); | |
| 78 | smram_restore_state(old_state); | |
| 79 | outb(0x80, 0x40); | |
| 80 | } | |
| 81 | ||
| 82 | void outlog() | |
| 83 | { | |
| 835f2e85 | 84 | /* |
| a02e8abd | 85 | int y; |
| 9e2a82e4 | 86 | |
| 9e2a82e4 | 87 | for (y = -LOG_ONSCREEN; y < 0; y++) |
| 4a718391 | 88 | strblit(logents[(y + prodptr + LOGLEN) % LOGLEN], y + LOG_ONSCREEN, 40, 1); |
| 835f2e85 | 89 | */ |
| 9e2a82e4 JP |
90 | } |
| 91 | ||
| 92 | void dolog(const char *s) | |
| 93 | { | |
| 94 | strcpy(logents[prodptr], s); | |
| 95 | prodptr = (prodptr + 1) % LOGLEN; | |
| bf47740a | 96 | while (*s) |
| 5a626f09 | 97 | serial_tx(*(s++)); |
| 113df320 JW |
98 | serial_tx('\r'); |
| 99 | serial_tx('\n'); | |
| 9e2a82e4 JP |
100 | if (flush_imm) |
| 101 | outlog(); | |
| 102 | } | |
| 103 | void (*output)(const char *s) = dolog; | |
| 104 | ||
| 105 | void dologf(const char *fmt, ...) | |
| 106 | { | |
| 113df320 JW |
107 | char *s; |
| 108 | va_list va; | |
| 109 | ||
| 110 | va_start(va, fmt); | |
| 111 | vsnprintf(logents[prodptr], 40, fmt, va); | |
| 112 | s = logents[prodptr]; | |
| 113 | while (*s) | |
| 114 | serial_tx(*(s++)); | |
| 115 | serial_tx('\r'); | |
| 116 | serial_tx('\n'); | |
| 117 | va_end(va); | |
| 118 | prodptr = (prodptr + 1) % LOGLEN; | |
| 119 | if (flush_imm) | |
| 120 | outlog(); | |
| 9e2a82e4 JP |
121 | } |
| 122 | void (*outputf)(const char *s, ...) = dologf; | |
| 123 | ||
| 124 | void dump_log (char * target) { | |
| 125 | memcpy(target, logents, sizeof(logents)); | |
| 126 | } |