Jacob Garber | 07201d7 | 2020-09-08 12:25:44 -0600 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 2 | |
| 3 | #include "coreinfo.h" |
| 4 | #include <commonlib/timestamp_serialized.h> |
| 5 | |
Julius Werner | eab2a29 | 2019-03-05 16:55:15 -0800 | [diff] [blame] | 6 | #if CONFIG(MODULE_TIMESTAMPS) |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 7 | |
| 8 | #define LINES_SHOWN 19 |
| 9 | #define TAB_WIDTH 2 |
| 10 | |
| 11 | /* Globals that are used for tracking screen state */ |
| 12 | static char *g_buf; |
| 13 | static s32 g_line; |
| 14 | static s32 g_lines_count; |
| 15 | static s32 g_max_cursor_line; |
| 16 | |
| 17 | static unsigned long tick_freq_mhz; |
| 18 | |
| 19 | static const char *timestamp_name(uint32_t id) |
| 20 | { |
Jacob Garber | a711e9c | 2019-06-28 10:58:56 -0600 | [diff] [blame] | 21 | for (size_t i = 0; i < ARRAY_SIZE(timestamp_ids); i++) { |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 22 | if (timestamp_ids[i].id == id) |
| 23 | return timestamp_ids[i].name; |
| 24 | } |
| 25 | |
| 26 | return "<unknown>"; |
| 27 | } |
| 28 | |
| 29 | static void timestamp_set_tick_freq(unsigned long table_tick_freq_mhz) |
| 30 | { |
| 31 | tick_freq_mhz = table_tick_freq_mhz; |
| 32 | |
| 33 | /* Honor table frequency. */ |
| 34 | if (tick_freq_mhz) |
| 35 | return; |
| 36 | |
| 37 | tick_freq_mhz = lib_sysinfo.cpu_khz / 1000; |
| 38 | |
| 39 | if (!tick_freq_mhz) { |
| 40 | fprintf(stderr, "Cannot determine timestamp tick frequency.\n"); |
| 41 | exit(1); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | static u64 arch_convert_raw_ts_entry(u64 ts) |
| 46 | { |
| 47 | return ts / tick_freq_mhz; |
| 48 | } |
| 49 | |
| 50 | static u32 char_width(char c, u32 cursor, u32 screen_width) |
| 51 | { |
| 52 | if (c == '\n') |
| 53 | return screen_width - (cursor % screen_width); |
| 54 | else if (c == '\t') |
| 55 | return TAB_WIDTH; |
| 56 | else if (isprint(c)) |
| 57 | return 1; |
| 58 | |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | static u32 calculate_chars_count(char *str, u32 str_len, u32 screen_width, |
| 63 | u32 screen_height) |
| 64 | { |
| 65 | u32 i, count = 0; |
| 66 | |
| 67 | for (i = 0; i < str_len; i++) |
| 68 | count += char_width(str[i], count, screen_width); |
| 69 | |
| 70 | /* Ensure that 'count' can occupy at least the whole screen */ |
| 71 | if (count < screen_width * screen_height) |
| 72 | count = screen_width * screen_height; |
| 73 | |
| 74 | /* Pad to line end */ |
| 75 | if (count % screen_width != 0) |
| 76 | count += screen_width - (count % screen_width); |
| 77 | |
| 78 | return count; |
| 79 | } |
| 80 | |
| 81 | /* |
| 82 | * This method takes an input buffer and sanitizes it for display, which means: |
| 83 | * - '\n' is converted to spaces until end of line |
| 84 | * - Tabs are converted to spaces of size TAB_WIDTH |
| 85 | * - Only printable characters are preserved |
| 86 | */ |
| 87 | static int sanitize_buffer_for_display(char *str, u32 str_len, char *out, |
| 88 | u32 out_len, u32 screen_width) |
| 89 | { |
| 90 | u32 cursor = 0; |
| 91 | u32 i; |
| 92 | |
| 93 | for (i = 0; i < str_len && cursor < out_len; i++) { |
| 94 | u32 width = char_width(str[i], cursor, screen_width); |
| 95 | |
| 96 | if (width == 1) |
| 97 | out[cursor++] = str[i]; |
| 98 | else if (width > 1) |
| 99 | while (width-- && cursor < out_len) |
| 100 | out[cursor++] = ' '; |
| 101 | } |
| 102 | |
| 103 | /* Fill the rest of the out buffer with spaces */ |
| 104 | while (cursor < out_len) |
| 105 | out[cursor++] = ' '; |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | static uint64_t timestamp_print_entry(char *buffer, size_t size, uint32_t *cur, |
| 111 | uint32_t id, uint64_t stamp, uint64_t prev_stamp) |
| 112 | { |
| 113 | const char *name; |
| 114 | uint64_t step_time; |
| 115 | |
| 116 | name = timestamp_name(id); |
| 117 | step_time = arch_convert_raw_ts_entry(stamp - prev_stamp); |
| 118 | |
| 119 | *cur += snprintf(buffer + *cur, size, "%4d: %-45s", id, name); |
| 120 | *cur += snprintf(buffer + *cur, size, "%llu", |
| 121 | arch_convert_raw_ts_entry(stamp)); |
| 122 | if (prev_stamp) { |
| 123 | *cur += snprintf(buffer + *cur, size, " ("); |
| 124 | *cur += snprintf(buffer + *cur, size, "%llu", step_time); |
| 125 | *cur += snprintf(buffer + *cur, size, ")"); |
| 126 | } |
| 127 | *cur += snprintf(buffer + *cur, size, "\n"); |
| 128 | |
| 129 | return step_time; |
| 130 | } |
| 131 | |
| 132 | static int timestamps_module_init(void) |
| 133 | { |
| 134 | /* Make sure that lib_sysinfo is initialized */ |
| 135 | int ret = lib_get_sysinfo(); |
| 136 | |
| 137 | if (ret) |
| 138 | return -1; |
| 139 | |
Nico Huber | bea01e3 | 2020-07-18 16:15:42 +0200 | [diff] [blame] | 140 | struct timestamp_table *timestamps = phys_to_virt(lib_sysinfo.tstamp_table); |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 141 | |
| 142 | if (timestamps == NULL) |
| 143 | return -1; |
| 144 | |
| 145 | /* Extract timestamps information */ |
| 146 | u64 base_time = timestamps->base_time; |
| 147 | u16 max_entries = timestamps->max_entries; |
| 148 | u32 n_entries = timestamps->num_entries; |
| 149 | |
| 150 | timestamp_set_tick_freq(timestamps->tick_freq_mhz); |
| 151 | |
| 152 | char *buffer; |
| 153 | u32 buff_cur = 0; |
| 154 | uint64_t prev_stamp; |
| 155 | uint64_t total_time; |
| 156 | |
| 157 | /* Allocate a buffer big enough to contain all of the possible |
| 158 | * entries plus the other information (number entries, total time). */ |
| 159 | buffer = malloc((max_entries + 4) * SCREEN_X * sizeof(char)); |
| 160 | |
| 161 | if (buffer == NULL) |
| 162 | return -3; |
| 163 | |
| 164 | /* Write the content */ |
| 165 | buff_cur += snprintf(buffer, SCREEN_X, "%d entries total:\n\n", |
| 166 | n_entries); |
| 167 | |
| 168 | prev_stamp = 0; |
| 169 | timestamp_print_entry(buffer, SCREEN_X, &buff_cur, 0, base_time, |
| 170 | prev_stamp); |
| 171 | prev_stamp = base_time; |
| 172 | |
| 173 | total_time = 0; |
Jacob Garber | a711e9c | 2019-06-28 10:58:56 -0600 | [diff] [blame] | 174 | for (u32 i = 0; i < n_entries; i++) { |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 175 | uint64_t stamp; |
| 176 | const struct timestamp_entry *tse = ×tamps->entries[i]; |
| 177 | |
| 178 | stamp = tse->entry_stamp + base_time; |
| 179 | total_time += timestamp_print_entry(buffer, SCREEN_X, |
| 180 | &buff_cur, tse->entry_id, stamp, prev_stamp); |
| 181 | prev_stamp = stamp; |
| 182 | } |
| 183 | |
| 184 | buff_cur += snprintf(buffer + buff_cur, SCREEN_X, "\nTotal Time: "); |
| 185 | buff_cur += snprintf(buffer + buff_cur, SCREEN_X, "%llu", total_time); |
| 186 | buff_cur += snprintf(buffer + buff_cur, SCREEN_X, "\n"); |
| 187 | |
| 188 | /* Calculate how many characters will be displayed on screen */ |
| 189 | u32 chars_count = calculate_chars_count(buffer, buff_cur + 1, |
| 190 | SCREEN_X, LINES_SHOWN); |
| 191 | |
| 192 | /* Sanity check, chars_count must be padded to full line */ |
Jacob Garber | b6d9175 | 2019-03-27 20:41:34 -0600 | [diff] [blame] | 193 | if (chars_count % SCREEN_X != 0) { |
| 194 | free(buffer); |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 195 | return -2; |
Jacob Garber | b6d9175 | 2019-03-27 20:41:34 -0600 | [diff] [blame] | 196 | } |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 197 | |
| 198 | g_lines_count = chars_count / SCREEN_X; |
| 199 | g_max_cursor_line = MAX(g_lines_count - 1 - LINES_SHOWN, 0); |
| 200 | |
| 201 | g_buf = malloc(chars_count); |
Martin Roth | 2d1e0eb | 2017-08-03 10:55:01 -0600 | [diff] [blame] | 202 | if (!g_buf) { |
| 203 | free(buffer); |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 204 | return -3; |
Martin Roth | 2d1e0eb | 2017-08-03 10:55:01 -0600 | [diff] [blame] | 205 | } |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 206 | |
| 207 | if (sanitize_buffer_for_display(buffer, buff_cur + 1, g_buf, |
| 208 | chars_count, SCREEN_X) < 0) { |
| 209 | free(buffer); |
| 210 | free(g_buf); |
| 211 | g_buf = NULL; |
| 212 | return -4; |
| 213 | } |
| 214 | |
| 215 | free(buffer); |
| 216 | |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | static int timestamps_module_redraw(WINDOW *win) |
| 221 | { |
Martin Roth | e81ce04 | 2017-06-03 20:00:36 -0600 | [diff] [blame] | 222 | print_module_title(win, "coreboot Timestamps"); |
Antonello Dettori | 4b1668f | 2016-07-08 11:14:40 +0200 | [diff] [blame] | 223 | |
| 224 | if (!g_buf) |
| 225 | return -1; |
| 226 | |
| 227 | int x = 0, y = 0; |
| 228 | char *tmp = g_buf + g_line * SCREEN_X; |
| 229 | |
| 230 | for (y = 0; y < LINES_SHOWN; y++) { |
| 231 | for (x = 0; x < SCREEN_X; x++) { |
| 232 | mvwaddch(win, y + 2, x, *tmp); |
| 233 | tmp++; |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | static int timestamps_module_handle(int key) |
| 241 | { |
| 242 | if (!g_buf) |
| 243 | return 0; |
| 244 | |
| 245 | switch (key) { |
| 246 | case KEY_DOWN: |
| 247 | g_line++; |
| 248 | break; |
| 249 | case KEY_UP: |
| 250 | g_line--; |
| 251 | break; |
| 252 | case KEY_NPAGE: /* Page up */ |
| 253 | g_line -= LINES_SHOWN; |
| 254 | break; |
| 255 | case KEY_PPAGE: /* Page down */ |
| 256 | g_line += LINES_SHOWN; |
| 257 | break; |
| 258 | } |
| 259 | |
| 260 | if (g_line < 0) |
| 261 | g_line = 0; |
| 262 | |
| 263 | if (g_line > g_max_cursor_line) |
| 264 | g_line = g_max_cursor_line; |
| 265 | |
| 266 | return 1; |
| 267 | } |
| 268 | |
| 269 | struct coreinfo_module timestamps_module = { |
| 270 | .name = "Timestamps", |
| 271 | .init = timestamps_module_init, |
| 272 | .redraw = timestamps_module_redraw, |
| 273 | .handle = timestamps_module_handle, |
| 274 | }; |
| 275 | |
| 276 | #else |
| 277 | |
| 278 | struct coreinfo_module timestamps_module = { |
| 279 | }; |
| 280 | |
| 281 | #endif |