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[bios] Add bin-x86_64-pcbios build platform

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Move most arch/i386 files to arch/x86, and adjust the contents of the
Makefiles and the include/bits/*.h headers to reflect the new
locations.

This patch makes no substantive code changes, as can be seen using a
rename-aware diff (e.g. "git show -M5").

This patch does not make the pcbios platform functional for x86_64; it
merely allows it to compile without errors.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-02-16 15:19:01 +00:00
parent 43515f9f1a
commit f468f12b1e
155 changed files with 198 additions and 240 deletions
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566
src/arch/x86/interface/pcbios/bios_console.c Normal file
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/*
* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program 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 2 of the
* License, or any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <assert.h>
#include <realmode.h>
#include <bios.h>
#include <biosint.h>
#include <ipxe/console.h>
#include <ipxe/ansiesc.h>
#include <ipxe/keys.h>
#include <ipxe/keymap.h>
#include <ipxe/init.h>
#include <config/console.h>
#define ATTR_BOLD 0x08
#define ATTR_FCOL_MASK 0x07
#define ATTR_FCOL_BLACK 0x00
#define ATTR_FCOL_BLUE 0x01
#define ATTR_FCOL_GREEN 0x02
#define ATTR_FCOL_CYAN 0x03
#define ATTR_FCOL_RED 0x04
#define ATTR_FCOL_MAGENTA 0x05
#define ATTR_FCOL_YELLOW 0x06
#define ATTR_FCOL_WHITE 0x07
#define ATTR_BLINK 0x80
#define ATTR_BCOL_MASK 0x70
#define ATTR_BCOL_BLACK 0x00
#define ATTR_BCOL_BLUE 0x10
#define ATTR_BCOL_GREEN 0x20
#define ATTR_BCOL_CYAN 0x30
#define ATTR_BCOL_RED 0x40
#define ATTR_BCOL_MAGENTA 0x50
#define ATTR_BCOL_YELLOW 0x60
#define ATTR_BCOL_WHITE 0x70
#define ATTR_DEFAULT ATTR_FCOL_WHITE
/* Set default console usage if applicable */
#if ! ( defined ( CONSOLE_PCBIOS ) && CONSOLE_EXPLICIT ( CONSOLE_PCBIOS ) )
#undef CONSOLE_PCBIOS
#define CONSOLE_PCBIOS ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_LOG )
#endif
/** Current character attribute */
static unsigned int bios_attr = ATTR_DEFAULT;
/** Keypress injection lock */
static uint8_t __text16 ( bios_inject_lock );
#define bios_inject_lock __use_text16 ( bios_inject_lock )
/** Vector for chaining to other INT 16 handlers */
static struct segoff __text16 ( int16_vector );
#define int16_vector __use_text16 ( int16_vector )
/** Assembly wrapper */
extern void int16_wrapper ( void );
/**
* Handle ANSI CUP (cursor position)
*
* @v ctx ANSI escape sequence context
* @v count Parameter count
* @v params[0] Row (1 is top)
* @v params[1] Column (1 is left)
*/
static void bios_handle_cup ( struct ansiesc_context *ctx __unused,
unsigned int count __unused, int params[] ) {
int cx = ( params[1] - 1 );
int cy = ( params[0] - 1 );
if ( cx < 0 )
cx = 0;
if ( cy < 0 )
cy = 0;
__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
"int $0x10\n\t"
"cli\n\t" )
: : "a" ( 0x0200 ), "b" ( 1 ),
"d" ( ( cy << 8 ) | cx ) );
}
/**
* Handle ANSI ED (erase in page)
*
* @v ctx ANSI escape sequence context
* @v count Parameter count
* @v params[0] Region to erase
*/
static void bios_handle_ed ( struct ansiesc_context *ctx __unused,
unsigned int count __unused,
int params[] __unused ) {
/* We assume that we always clear the whole screen */
assert ( params[0] == ANSIESC_ED_ALL );
__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
"int $0x10\n\t"
"cli\n\t" )
: : "a" ( 0x0600 ), "b" ( bios_attr << 8 ),
"c" ( 0 ),
"d" ( ( ( console_height - 1 ) << 8 ) |
( console_width - 1 ) ) );
}
/**
* Handle ANSI SGR (set graphics rendition)
*
* @v ctx ANSI escape sequence context
* @v count Parameter count
* @v params List of graphic rendition aspects
*/
static void bios_handle_sgr ( struct ansiesc_context *ctx __unused,
unsigned int count, int params[] ) {
static const uint8_t bios_attr_fcols[10] = {
ATTR_FCOL_BLACK, ATTR_FCOL_RED, ATTR_FCOL_GREEN,
ATTR_FCOL_YELLOW, ATTR_FCOL_BLUE, ATTR_FCOL_MAGENTA,
ATTR_FCOL_CYAN, ATTR_FCOL_WHITE,
ATTR_FCOL_WHITE, ATTR_FCOL_WHITE /* defaults */
};
static const uint8_t bios_attr_bcols[10] = {
ATTR_BCOL_BLACK, ATTR_BCOL_RED, ATTR_BCOL_GREEN,
ATTR_BCOL_YELLOW, ATTR_BCOL_BLUE, ATTR_BCOL_MAGENTA,
ATTR_BCOL_CYAN, ATTR_BCOL_WHITE,
ATTR_BCOL_BLACK, ATTR_BCOL_BLACK /* defaults */
};
unsigned int i;
int aspect;
for ( i = 0 ; i < count ; i++ ) {
aspect = params[i];
if ( aspect == 0 ) {
bios_attr = ATTR_DEFAULT;
} else if ( aspect == 1 ) {
bios_attr |= ATTR_BOLD;
} else if ( aspect == 5 ) {
bios_attr |= ATTR_BLINK;
} else if ( aspect == 22 ) {
bios_attr &= ~ATTR_BOLD;
} else if ( aspect == 25 ) {
bios_attr &= ~ATTR_BLINK;
} else if ( ( aspect >= 30 ) && ( aspect <= 39 ) ) {
bios_attr &= ~ATTR_FCOL_MASK;
bios_attr |= bios_attr_fcols[ aspect - 30 ];
} else if ( ( aspect >= 40 ) && ( aspect <= 49 ) ) {
bios_attr &= ~ATTR_BCOL_MASK;
bios_attr |= bios_attr_bcols[ aspect - 40 ];
}
}
}
/**
* Handle ANSI DECTCEM set (show cursor)
*
* @v ctx ANSI escape sequence context
* @v count Parameter count
* @v params List of graphic rendition aspects
*/
static void bios_handle_dectcem_set ( struct ansiesc_context *ctx __unused,
unsigned int count __unused,
int params[] __unused ) {
uint8_t height;
/* Get character height */
get_real ( height, BDA_SEG, BDA_CHAR_HEIGHT );
__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
"int $0x10\n\t"
"cli\n\t" )
: : "a" ( 0x0100 ),
"c" ( ( ( height - 2 ) << 8 ) |
( height - 1 ) ) );
}
/**
* Handle ANSI DECTCEM reset (hide cursor)
*
* @v ctx ANSI escape sequence context
* @v count Parameter count
* @v params List of graphic rendition aspects
*/
static void bios_handle_dectcem_reset ( struct ansiesc_context *ctx __unused,
unsigned int count __unused,
int params[] __unused ) {
__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
"int $0x10\n\t"
"cli\n\t" )
: : "a" ( 0x0100 ), "c" ( 0x2000 ) );
}
/** BIOS console ANSI escape sequence handlers */
static struct ansiesc_handler bios_ansiesc_handlers[] = {
{ ANSIESC_CUP, bios_handle_cup },
{ ANSIESC_ED, bios_handle_ed },
{ ANSIESC_SGR, bios_handle_sgr },
{ ANSIESC_DECTCEM_SET, bios_handle_dectcem_set },
{ ANSIESC_DECTCEM_RESET, bios_handle_dectcem_reset },
{ 0, NULL }
};
/** BIOS console ANSI escape sequence context */
static struct ansiesc_context bios_ansiesc_ctx = {
.handlers = bios_ansiesc_handlers,
};
/**
* Print a character to BIOS console
*
* @v character Character to be printed
*/
static void bios_putchar ( int character ) {
int discard_a, discard_b, discard_c;
/* Intercept ANSI escape sequences */
character = ansiesc_process ( &bios_ansiesc_ctx, character );
if ( character < 0 )
return;
/* Print character with attribute */
__asm__ __volatile__ ( REAL_CODE ( "pushl %%ebp\n\t" /* gcc bug */
"sti\n\t"
/* Skip non-printable characters */
"cmpb $0x20, %%al\n\t"
"jb 1f\n\t"
/* Read attribute */
"movb %%al, %%cl\n\t"
"movb $0x08, %%ah\n\t"
"int $0x10\n\t"
"xchgb %%al, %%cl\n\t"
/* Skip if attribute matches */
"cmpb %%ah, %%bl\n\t"
"je 1f\n\t"
/* Set attribute */
"movw $0x0001, %%cx\n\t"
"movb $0x09, %%ah\n\t"
"int $0x10\n\t"
"\n1:\n\t"
/* Print character */
"xorw %%bx, %%bx\n\t"
"movb $0x0e, %%ah\n\t"
"int $0x10\n\t"
"cli\n\t"
"popl %%ebp\n\t" /* gcc bug */ )
: "=a" ( discard_a ), "=b" ( discard_b ),
"=c" ( discard_c )
: "a" ( character ), "b" ( bios_attr ) );
}
/**
* Pointer to current ANSI output sequence
*
* While we are in the middle of returning an ANSI sequence for a
* special key, this will point to the next character to return. When
* not in the middle of such a sequence, this will point to a NUL
* (note: not "will be NULL").
*/
static const char *bios_ansi_input = "";
/** A BIOS key */
struct bios_key {
/** Scancode */
uint8_t scancode;
/** Key code */
uint16_t key;
} __attribute__ (( packed ));
/** Mapping from BIOS scan codes to iPXE key codes */
static const struct bios_key bios_keys[] = {
{ 0x53, KEY_DC },
{ 0x48, KEY_UP },
{ 0x50, KEY_DOWN },
{ 0x4b, KEY_LEFT },
{ 0x4d, KEY_RIGHT },
{ 0x47, KEY_HOME },
{ 0x4f, KEY_END },
{ 0x49, KEY_PPAGE },
{ 0x51, KEY_NPAGE },
{ 0x3f, KEY_F5 },
{ 0x40, KEY_F6 },
{ 0x41, KEY_F7 },
{ 0x42, KEY_F8 },
{ 0x43, KEY_F9 },
{ 0x44, KEY_F10 },
{ 0x85, KEY_F11 },
{ 0x86, KEY_F12 },
};
/**
* Get ANSI escape sequence corresponding to BIOS scancode
*
* @v scancode BIOS scancode
* @ret ansi_seq ANSI escape sequence, if any, otherwise NULL
*/
static const char * bios_ansi_seq ( unsigned int scancode ) {
static char buf[ 5 /* "[" + two digits + terminator + NUL */ ];
unsigned int key;
unsigned int terminator;
unsigned int n;
unsigned int i;
char *tmp = buf;
/* Construct ANSI escape sequence for scancode, if known */
for ( i = 0 ; i < ( sizeof ( bios_keys ) /
sizeof ( bios_keys[0] ) ) ; i++ ) {
/* Look for matching scancode */
if ( bios_keys[i].scancode != scancode )
continue;
/* Construct escape sequence */
key = bios_keys[i].key;
n = KEY_ANSI_N ( key );
terminator = KEY_ANSI_TERMINATOR ( key );
*(tmp++) = '[';
if ( n )
tmp += sprintf ( tmp, "%d", n );
*(tmp++) = terminator;
*(tmp++) = '\0';
assert ( tmp <= &buf[ sizeof ( buf ) ] );
return buf;
}
DBG ( "Unrecognised BIOS scancode %02x\n", scancode );
return NULL;
}
/**
* Map a key
*
* @v character Character read from console
* @ret character Mapped character
*/
static int bios_keymap ( unsigned int character ) {
struct key_mapping *mapping;
for_each_table_entry ( mapping, KEYMAP ) {
if ( mapping->from == character )
return mapping->to;
}
return character;
}
/**
* Get character from BIOS console
*
* @ret character Character read from console
*/
static int bios_getchar ( void ) {
uint16_t keypress;
unsigned int character;
const char *ansi_seq;
/* If we are mid-sequence, pass out the next byte */
if ( ( character = *bios_ansi_input ) ) {
bios_ansi_input++;
return character;
}
/* Do nothing if injection is in progress */
if ( bios_inject_lock )
return 0;
/* Read character from real BIOS console */
bios_inject_lock++;
__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
"int $0x16\n\t"
"cli\n\t" )
: "=a" ( keypress )
: "a" ( 0x1000 ), "m" ( bios_inject_lock ) );
bios_inject_lock--;
character = ( keypress & 0xff );
/* If it's a normal character, just map and return it */
if ( character && ( character < 0x80 ) )
return bios_keymap ( character );
/* Otherwise, check for a special key that we know about */
if ( ( ansi_seq = bios_ansi_seq ( keypress >> 8 ) ) ) {
/* Start of escape sequence: return ESC (0x1b) */
bios_ansi_input = ansi_seq;
return 0x1b;
}
return 0;
}
/**
* Check for character ready to read from BIOS console
*
* @ret True Character available to read
* @ret False No character available to read
*/
static int bios_iskey ( void ) {
unsigned int discard_a;
unsigned int flags;
/* If we are mid-sequence, we are always ready */
if ( *bios_ansi_input )
return 1;
/* Do nothing if injection is in progress */
if ( bios_inject_lock )
return 0;
/* Otherwise check the real BIOS console */
bios_inject_lock++;
__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
"int $0x16\n\t"
"pushfw\n\t"
"popw %w0\n\t"
"cli\n\t" )
: "=R" ( flags ), "=a" ( discard_a )
: "a" ( 0x1100 ), "m" ( bios_inject_lock ) );
bios_inject_lock--;
return ( ! ( flags & ZF ) );
}
/** BIOS console */
struct console_driver bios_console __console_driver = {
.putchar = bios_putchar,
.getchar = bios_getchar,
.iskey = bios_iskey,
.usage = CONSOLE_PCBIOS,
};
/**
* Inject keypresses
*
* @v ix86 Registers as passed to INT 16
*/
static __asmcall void bios_inject ( struct i386_all_regs *ix86 ) {
unsigned int discard_a;
unsigned int scancode;
unsigned int i;
uint16_t keypress;
int key;
/* If this is a blocking call, then loop until the
* non-blocking variant of the call indicates that a keypress
* is available. Do this without acquiring the injection
* lock, so that injection may take place.
*/
if ( ( ix86->regs.ah & ~0x10 ) == 0x00 ) {
__asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
"\n1:\n\t"
"pushw %%ax\n\t"
"int $0x16\n\t"
"popw %%ax\n\t"
"jc 2f\n\t"
"jz 1b\n\t"
"\n2:\n\t"
"cli\n\t" )
: "=a" ( discard_a )
: "a" ( ix86->regs.eax | 0x0100 ),
"m" ( bios_inject_lock ) );
}
/* Acquire injection lock */
bios_inject_lock++;
/* Check for keypresses */
if ( iskey() ) {
/* Get key */
key = getkey ( 0 );
/* Reverse internal CR->LF mapping */
if ( key == '\n' )
key = '\r';
/* Convert to keypress */
keypress = ( ( key << 8 ) | key );
/* Handle special keys */
if ( key >= KEY_MIN ) {
for ( i = 0 ; i < ( sizeof ( bios_keys ) /
sizeof ( bios_keys[0] ) ) ; i++ ) {
if ( bios_keys[i].key == key ) {
scancode = bios_keys[i].scancode;
keypress = ( scancode << 8 );
break;
}
}
}
/* Inject keypress */
DBGC ( &bios_console, "BIOS injecting keypress %04x\n",
keypress );
__asm__ __volatile__ ( REAL_CODE ( "int $0x16\n\t" )
: "=a" ( discard_a )
: "a" ( 0x0500 ), "c" ( keypress ),
"m" ( bios_inject_lock ) );
}
/* Release injection lock */
bios_inject_lock--;
}
/**
* Start up keypress injection
*
*/
static void bios_inject_startup ( void ) {
/* Assembly wrapper to call bios_inject() */
__asm__ __volatile__ (
TEXT16_CODE ( "\nint16_wrapper:\n\t"
"pushfw\n\t"
"cmpb $0, %%cs:bios_inject_lock\n\t"
"jnz 1f\n\t"
"pushl %0\n\t"
"pushw %%cs\n\t"
"call prot_call\n\t"
"addw $4, %%sp\n\t"
"\n1:\n\t"
"popfw\n\t"
"ljmp *%%cs:int16_vector\n\t" )
: : "i" ( bios_inject ) );
/* Hook INT 16 */
hook_bios_interrupt ( 0x16, ( ( intptr_t ) int16_wrapper ),
&int16_vector );
}
/**
* Shut down keypress injection
*
* @v booting System is shutting down for OS boot
*/
static void bios_inject_shutdown ( int booting __unused ) {
/* Unhook INT 16 */
unhook_bios_interrupt ( 0x16, ( ( intptr_t ) int16_wrapper ),
&int16_vector );
}
/** Keypress injection startup function */
struct startup_fn bios_inject_startup_fn __startup_fn ( STARTUP_NORMAL ) = {
.startup = bios_inject_startup,
.shutdown = bios_inject_shutdown,
};