loader: fall back to term_emu on efi console with serial backend
In case of efi console having serial backend (video + serial or only serial), we need to stick with old emulator till we can draw console. Eventually we would need to get console terminal emulator to be removed from serial console because the serial link already has the terminal. However, we need to implement comconsole on all efi platforms first, then we need the ability to draw console, so we do not have to use SimpleTextOutput protocol (which will write both on video and serial in case of multiplexed ComOut). Differential Revision: https://reviews.freebsd.org/D22161
This commit is contained in:
Toomas Soome
parent
bac5966e2d
commit
b9f745fdb1
@ -106,6 +106,7 @@ EFI_STATUS errno_to_efi_status(int errno);
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void efi_time_init(void);
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void efi_time_fini(void);
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int parse_uefi_con_out(void);
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bool efi_cons_update_mode(void);
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EFI_STATUS efi_main(EFI_HANDLE Ximage, EFI_SYSTEM_TABLE* Xsystab);
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@ -61,4 +61,9 @@ CFLAGS+= -I${LDRSRC}
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# Handle FreeBSD specific %b and %D printf format specifiers
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CFLAGS+= ${FORMAT_EXTENSIONS}
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# Do not use TERM_EMU on arm and arm64 as it doesn't behave well with serial console
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.if ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "aarch64"
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CFLAGS+= -DTERM_EMU
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.endif
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.include <bsd.lib.mk>
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@ -30,6 +30,7 @@ __FBSDID("$FreeBSD$");
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#include <efi.h>
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#include <efilib.h>
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#include <teken.h>
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#include <sys/reboot.h>
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#include "bootstrap.h"
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@ -38,6 +39,26 @@ static SIMPLE_TEXT_OUTPUT_INTERFACE *conout;
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static SIMPLE_INPUT_INTERFACE *conin;
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static EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL *coninex;
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static int mode; /* Does ConOut have serial console? */
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static uint32_t utf8_left;
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static uint32_t utf8_partial;
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#ifdef TERM_EMU
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#define DEFAULT_FGCOLOR EFI_LIGHTGRAY
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#define DEFAULT_BGCOLOR EFI_BLACK
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#define MAXARGS 8
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static int args[MAXARGS], argc;
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static int fg_c, bg_c, curx, cury;
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static int esc;
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void get_pos(int *x, int *y);
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void curs_move(int *_x, int *_y, int x, int y);
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static void CL(int);
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void HO(void);
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void end_term(void);
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#endif
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static tf_bell_t efi_cons_bell;
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static tf_cursor_t efi_text_cursor;
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static tf_putchar_t efi_text_putchar;
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@ -447,6 +468,340 @@ efi_set_colors(struct env_var *ev, int flags, const void *value)
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return (CMD_OK);
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}
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#ifdef TERM_EMU
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/* Get cursor position. */
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void
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get_pos(int *x, int *y)
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{
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*x = conout->Mode->CursorColumn;
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*y = conout->Mode->CursorRow;
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}
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/* Move cursor to x rows and y cols (0-based). */
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void
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curs_move(int *_x, int *_y, int x, int y)
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{
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conout->SetCursorPosition(conout, x, y);
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if (_x != NULL)
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*_x = conout->Mode->CursorColumn;
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if (_y != NULL)
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*_y = conout->Mode->CursorRow;
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}
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/* Clear internal state of the terminal emulation code. */
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void
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end_term(void)
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{
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esc = 0;
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argc = -1;
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}
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#endif
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static void
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efi_cons_rawputchar(int c)
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{
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int i;
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UINTN x, y;
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conout->QueryMode(conout, conout->Mode->Mode, &x, &y);
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if (c == '\t') {
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int n;
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n = 8 - ((conout->Mode->CursorColumn + 8) % 8);
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for (i = 0; i < n; i++)
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efi_cons_rawputchar(' ');
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} else {
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#ifndef TERM_EMU
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if (c == '\n')
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efi_cons_efiputchar('\r');
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efi_cons_efiputchar(c);
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#else
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switch (c) {
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case '\r':
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curx = 0;
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efi_cons_efiputchar('\r');
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return;
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case '\n':
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efi_cons_efiputchar('\n');
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efi_cons_efiputchar('\r');
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cury++;
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if (cury >= y)
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cury--;
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curx = 0;
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return;
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case '\b':
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if (curx > 0) {
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efi_cons_efiputchar('\b');
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curx--;
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}
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return;
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default:
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efi_cons_efiputchar(c);
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curx++;
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if (curx > x-1) {
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curx = 0;
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cury++;
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}
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if (cury > y-1) {
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curx = 0;
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cury--;
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}
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}
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#endif
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}
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conout->EnableCursor(conout, TRUE);
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}
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#ifdef TERM_EMU
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/* Gracefully exit ESC-sequence processing in case of misunderstanding. */
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static void
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bail_out(int c)
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{
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char buf[16], *ch;
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int i;
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if (esc) {
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efi_cons_rawputchar('\033');
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if (esc != '\033')
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efi_cons_rawputchar(esc);
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for (i = 0; i <= argc; ++i) {
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sprintf(buf, "%d", args[i]);
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ch = buf;
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while (*ch)
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efi_cons_rawputchar(*ch++);
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}
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}
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efi_cons_rawputchar(c);
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end_term();
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}
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/* Clear display from current position to end of screen. */
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static void
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CD(void)
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{
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int i;
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UINTN x, y;
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get_pos(&curx, &cury);
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if (curx == 0 && cury == 0) {
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conout->ClearScreen(conout);
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end_term();
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return;
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}
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conout->QueryMode(conout, conout->Mode->Mode, &x, &y);
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CL(0); /* clear current line from cursor to end */
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for (i = cury + 1; i < y-1; i++) {
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curs_move(NULL, NULL, 0, i);
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CL(0);
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}
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curs_move(NULL, NULL, curx, cury);
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end_term();
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}
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/*
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* Absolute cursor move to args[0] rows and args[1] columns
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* (the coordinates are 1-based).
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*/
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static void
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CM(void)
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{
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if (args[0] > 0)
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args[0]--;
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if (args[1] > 0)
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args[1]--;
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curs_move(&curx, &cury, args[1], args[0]);
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end_term();
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}
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/* Home cursor (left top corner), also called from mode command. */
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void
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HO(void)
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{
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argc = 1;
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args[0] = args[1] = 1;
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CM();
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}
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/* Clear line from current position to end of line */
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static void
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CL(int direction)
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{
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int i, len;
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UINTN x, y;
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CHAR16 *line;
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conout->QueryMode(conout, conout->Mode->Mode, &x, &y);
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switch (direction) {
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case 0: /* from cursor to end */
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len = x - curx + 1;
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break;
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case 1: /* from beginning to cursor */
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len = curx;
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break;
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case 2: /* entire line */
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len = x;
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break;
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default: /* NOTREACHED */
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__unreachable();
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}
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if (cury == y - 1)
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len--;
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line = malloc(len * sizeof (CHAR16));
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if (line == NULL) {
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printf("out of memory\n");
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return;
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}
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for (i = 0; i < len; i++)
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line[i] = ' ';
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line[len-1] = 0;
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if (direction != 0)
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curs_move(NULL, NULL, 0, cury);
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conout->OutputString(conout, line);
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/* restore cursor position */
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curs_move(NULL, NULL, curx, cury);
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free(line);
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end_term();
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}
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static void
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get_arg(int c)
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{
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if (argc < 0)
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argc = 0;
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args[argc] *= 10;
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args[argc] += c - '0';
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}
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#endif
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/* Emulate basic capabilities of cons25 terminal */
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static void
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efi_term_emu(int c)
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{
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#ifdef TERM_EMU
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static int ansi_col[] = {
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0, 4, 2, 6, 1, 5, 3, 7
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};
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int t, i;
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EFI_STATUS status;
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switch (esc) {
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case 0:
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switch (c) {
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case '\033':
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esc = c;
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break;
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default:
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efi_cons_rawputchar(c);
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break;
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}
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break;
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case '\033':
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switch (c) {
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case '[':
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esc = c;
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args[0] = 0;
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argc = -1;
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break;
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default:
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bail_out(c);
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break;
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}
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break;
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case '[':
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switch (c) {
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case ';':
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if (argc < 0)
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argc = 0;
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else if (argc + 1 >= MAXARGS)
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bail_out(c);
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else
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args[++argc] = 0;
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break;
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case 'H': /* ho = \E[H */
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if (argc < 0)
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HO();
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else if (argc == 1)
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CM();
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else
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bail_out(c);
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break;
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case 'J': /* cd = \E[J */
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if (argc < 0)
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CD();
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else
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bail_out(c);
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break;
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case 'm':
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if (argc < 0) {
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fg_c = DEFAULT_FGCOLOR;
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bg_c = DEFAULT_BGCOLOR;
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}
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for (i = 0; i <= argc; ++i) {
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switch (args[i]) {
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case 0: /* back to normal */
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fg_c = DEFAULT_FGCOLOR;
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bg_c = DEFAULT_BGCOLOR;
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break;
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case 1: /* bold */
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fg_c |= 0x8;
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break;
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case 4: /* underline */
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case 5: /* blink */
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bg_c |= 0x8;
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break;
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case 7: /* reverse */
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t = fg_c;
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fg_c = bg_c;
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bg_c = t;
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break;
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case 22: /* normal intensity */
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fg_c &= ~0x8;
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break;
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case 24: /* not underline */
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case 25: /* not blinking */
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bg_c &= ~0x8;
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break;
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case 30: case 31: case 32: case 33:
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case 34: case 35: case 36: case 37:
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fg_c = ansi_col[args[i] - 30];
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break;
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case 39: /* normal */
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fg_c = DEFAULT_FGCOLOR;
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break;
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case 40: case 41: case 42: case 43:
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case 44: case 45: case 46: case 47:
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bg_c = ansi_col[args[i] - 40];
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break;
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case 49: /* normal */
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bg_c = DEFAULT_BGCOLOR;
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break;
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}
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}
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conout->SetAttribute(conout, EFI_TEXT_ATTR(fg_c, bg_c));
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end_term();
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break;
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default:
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if (isdigit(c))
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get_arg(c);
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else
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bail_out(c);
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break;
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}
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break;
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default:
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bail_out(c);
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break;
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}
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#else
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efi_cons_rawputchar(c);
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#endif
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}
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bool
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efi_cons_update_mode(void)
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{
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@ -461,36 +816,59 @@ efi_cons_update_mode(void)
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rows = 24;
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}
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if (buffer != NULL) {
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if (tp.tp_row == rows && tp.tp_col == cols)
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return (true);
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free(buffer);
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} else {
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teken_init(&teken, &tf, NULL);
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}
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tp.tp_row = rows;
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tp.tp_col = cols;
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buffer = malloc(rows * cols * sizeof(*buffer));
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if (buffer == NULL)
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return (false);
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teken_set_winsize(&teken, &tp);
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a = teken_get_defattr(&teken);
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snprintf(env, sizeof(env), "%d", a->ta_fgcolor);
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env_setenv("teken.fg_color", EV_VOLATILE, env, efi_set_colors,
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env_nounset);
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snprintf(env, sizeof(env), "%d", a->ta_bgcolor);
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env_setenv("teken.bg_color", EV_VOLATILE, env, efi_set_colors,
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env_nounset);
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for (int row = 0; row < rows; row++)
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for (int col = 0; col < cols; col++) {
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buffer[col + row * tp.tp_col].c = ' ';
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buffer[col + row * tp.tp_col].a = *a;
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/*
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* When we have serial port listed in ConOut, use pre-teken emulator,
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* if built with.
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* The problem is, we can not output text on efi and comconsole when
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* efi also has comconsole bound. But then again, we need to have
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* terminal emulator for efi text mode to support the menu.
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* While teken is too expensive to be used on serial console, the
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* pre-teken emulator is light enough to be used on serial console.
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*/
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mode = parse_uefi_con_out();
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if ((mode & RB_SERIAL) == 0) {
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if (buffer != NULL) {
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if (tp.tp_row == rows && tp.tp_col == cols)
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return (true);
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free(buffer);
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} else {
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teken_init(&teken, &tf, NULL);
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}
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tp.tp_row = rows;
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tp.tp_col = cols;
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buffer = malloc(rows * cols * sizeof(*buffer));
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if (buffer == NULL)
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return (false);
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teken_set_winsize(&teken, &tp);
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a = teken_get_defattr(&teken);
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snprintf(env, sizeof(env), "%d", a->ta_fgcolor);
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env_setenv("teken.fg_color", EV_VOLATILE, env, efi_set_colors,
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env_nounset);
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snprintf(env, sizeof(env), "%d", a->ta_bgcolor);
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env_setenv("teken.bg_color", EV_VOLATILE, env, efi_set_colors,
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env_nounset);
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for (int row = 0; row < rows; row++) {
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for (int col = 0; col < cols; col++) {
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buffer[col + row * tp.tp_col].c = ' ';
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buffer[col + row * tp.tp_col].a = *a;
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}
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}
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} else {
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#ifdef TERM_EMU
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conout->SetAttribute(conout, EFI_TEXT_ATTR(DEFAULT_FGCOLOR,
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DEFAULT_BGCOLOR));
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end_term();
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get_pos(&curx, &cury);
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curs_move(&curx, &cury, curx, cury);
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fg_c = DEFAULT_FGCOLOR;
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bg_c = DEFAULT_BGCOLOR;
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#endif
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}
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snprintf(env, sizeof (env), "%u", (unsigned)rows);
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setenv("LINES", env, 1);
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snprintf(env, sizeof (env), "%u", (unsigned)cols);
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@ -522,11 +900,109 @@ efi_cons_init(int arg)
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return (1);
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}
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static void
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input_partial(void)
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{
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unsigned i;
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uint32_t c;
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if (utf8_left == 0)
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return;
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for (i = 0; i < sizeof(utf8_partial); i++) {
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c = (utf8_partial >> (24 - (i << 3))) & 0xff;
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if (c != 0)
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efi_term_emu(c);
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}
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utf8_left = 0;
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utf8_partial = 0;
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}
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static void
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input_byte(uint8_t c)
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{
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if ((c & 0x80) == 0x00) {
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/* One-byte sequence. */
|
||||
input_partial();
|
||||
efi_term_emu(c);
|
||||
return;
|
||||
}
|
||||
if ((c & 0xe0) == 0xc0) {
|
||||
/* Two-byte sequence. */
|
||||
input_partial();
|
||||
utf8_left = 1;
|
||||
utf8_partial = c;
|
||||
return;
|
||||
}
|
||||
if ((c & 0xf0) == 0xe0) {
|
||||
/* Three-byte sequence. */
|
||||
input_partial();
|
||||
utf8_left = 2;
|
||||
utf8_partial = c;
|
||||
return;
|
||||
}
|
||||
if ((c & 0xf8) == 0xf0) {
|
||||
/* Four-byte sequence. */
|
||||
input_partial();
|
||||
utf8_left = 3;
|
||||
utf8_partial = c;
|
||||
return;
|
||||
}
|
||||
if ((c & 0xc0) == 0x80) {
|
||||
/* Invalid state? */
|
||||
if (utf8_left == 0) {
|
||||
efi_term_emu(c);
|
||||
return;
|
||||
}
|
||||
utf8_left--;
|
||||
utf8_partial = (utf8_partial << 8) | c;
|
||||
if (utf8_left == 0) {
|
||||
uint32_t v, u;
|
||||
uint8_t b;
|
||||
|
||||
v = 0;
|
||||
u = utf8_partial;
|
||||
b = (u >> 24) & 0xff;
|
||||
if (b != 0) { /* Four-byte sequence */
|
||||
v = b & 0x07;
|
||||
b = (u >> 16) & 0xff;
|
||||
v = (v << 6) | (b & 0x3f);
|
||||
b = (u >> 8) & 0xff;
|
||||
v = (v << 6) | (b & 0x3f);
|
||||
b = u & 0xff;
|
||||
v = (v << 6) | (b & 0x3f);
|
||||
} else if ((b = (u >> 16) & 0xff) != 0) {
|
||||
v = b & 0x0f; /* Three-byte sequence */
|
||||
b = (u >> 8) & 0xff;
|
||||
v = (v << 6) | (b & 0x3f);
|
||||
b = u & 0xff;
|
||||
v = (v << 6) | (b & 0x3f);
|
||||
} else if ((b = (u >> 8) & 0xff) != 0) {
|
||||
v = b & 0x1f; /* Two-byte sequence */
|
||||
b = u & 0xff;
|
||||
v = (v << 6) | (b & 0x3f);
|
||||
}
|
||||
/* Send unicode char directly to console. */
|
||||
efi_cons_efiputchar(v);
|
||||
utf8_partial = 0;
|
||||
}
|
||||
return;
|
||||
}
|
||||
/* Anything left is illegal in UTF-8 sequence. */
|
||||
input_partial();
|
||||
efi_term_emu(c);
|
||||
}
|
||||
|
||||
void
|
||||
efi_cons_putchar(int c)
|
||||
{
|
||||
unsigned char ch = c;
|
||||
|
||||
if ((mode & RB_SERIAL) != 0) {
|
||||
input_byte(ch);
|
||||
return;
|
||||
}
|
||||
|
||||
if (buffer != NULL)
|
||||
teken_input(&teken, &ch, sizeof (ch));
|
||||
else
|
||||
|
||||
@ -688,7 +688,7 @@ setenv_int(const char *key, int val)
|
||||
* ACPI name space to map the UID for the serial port to a port. The
|
||||
* latter is especially hard.
|
||||
*/
|
||||
static int
|
||||
int
|
||||
parse_uefi_con_out(void)
|
||||
{
|
||||
int how, rv;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user