2007-10-03 Robert Millan <rmh@aybabtu.com>
* include/grub/i386/io.h: New file. * commands/i386/pc/play.c (inb): Removed. (outb): Removed. Include grub/cpu/io.h. Replace inb() with grub_inb() and outb() with grub_outb(). * term/i386/pc/serial.c: Likewise. * term/i386/pc/vga.c: Likewise.
This commit is contained in:
robertmh
parent
1a477ed638
commit
5c58b791cc
6 changed files with 120 additions and 93 deletions
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@ -25,6 +25,7 @@
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#include <grub/normal.h>
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#include <grub/arg.h>
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#include <grub/terminfo.h>
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#include <grub/cpu/io.h>
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#define TEXT_WIDTH 80
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#define TEXT_HEIGHT 25
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@ -62,26 +63,6 @@ struct serial_port
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/* Serial port settings. */
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static struct serial_port serial_settings;
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/* Read a byte from a port. */
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static inline unsigned char
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inb (const unsigned short port)
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{
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unsigned char value;
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asm volatile ("inb %w1, %0" : "=a" (value) : "Nd" (port));
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asm volatile ("outb %%al, $0x80" : : );
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return value;
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}
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/* Write a byte to a port. */
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static inline void
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outb (const unsigned short port, const unsigned char value)
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{
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asm volatile ("outb %b0, %w1" : : "a" (value), "Nd" (port));
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asm volatile ("outb %%al, $0x80" : : );
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}
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/* Return the port number for the UNITth serial device. */
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static inline unsigned short
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serial_hw_get_port (const unsigned short unit)
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@ -95,8 +76,8 @@ serial_hw_get_port (const unsigned short unit)
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static int
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serial_hw_fetch (void)
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{
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if (inb (serial_settings.port + UART_LSR) & UART_DATA_READY)
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return inb (serial_settings.port + UART_RX);
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if (grub_inb (serial_settings.port + UART_LSR) & UART_DATA_READY)
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return grub_inb (serial_settings.port + UART_RX);
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return -1;
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}
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@ -108,14 +89,14 @@ serial_hw_put (const int c)
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unsigned int timeout = 100000;
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/* Wait until the transmitter holding register is empty. */
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while ((inb (serial_settings.port + UART_LSR) & UART_EMPTY_TRANSMITTER) == 0)
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while ((grub_inb (serial_settings.port + UART_LSR) & UART_EMPTY_TRANSMITTER) == 0)
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{
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if (--timeout == 0)
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/* There is something wrong. But what can I do? */
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return;
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}
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outb (serial_settings.port + UART_TX, c);
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grub_outb (serial_settings.port + UART_TX, c);
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}
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static void
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@ -287,26 +268,26 @@ serial_hw_init (void)
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unsigned char status = 0;
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/* Turn off the interupt. */
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outb (serial_settings.port + UART_IER, 0);
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grub_outb (serial_settings.port + UART_IER, 0);
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/* Set DLAB. */
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outb (serial_settings.port + UART_LCR, UART_DLAB);
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grub_outb (serial_settings.port + UART_LCR, UART_DLAB);
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/* Set the baud rate. */
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outb (serial_settings.port + UART_DLL, serial_settings.divisor & 0xFF);
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outb (serial_settings.port + UART_DLH, serial_settings.divisor >> 8 );
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grub_outb (serial_settings.port + UART_DLL, serial_settings.divisor & 0xFF);
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grub_outb (serial_settings.port + UART_DLH, serial_settings.divisor >> 8 );
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/* Set the line status. */
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status |= (serial_settings.parity
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| serial_settings.word_len
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| serial_settings.stop_bits);
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outb (serial_settings.port + UART_LCR, status);
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grub_outb (serial_settings.port + UART_LCR, status);
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/* Enable the FIFO. */
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outb (serial_settings.port + UART_FCR, UART_ENABLE_FIFO);
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grub_outb (serial_settings.port + UART_FCR, UART_ENABLE_FIFO);
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/* Turn on DTR, RTS, and OUT2. */
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outb (serial_settings.port + UART_MCR, UART_ENABLE_MODEM);
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grub_outb (serial_settings.port + UART_MCR, UART_ENABLE_MODEM);
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/* Drain the input buffer. */
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while (grub_serial_checkkey () != -1)
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@ -66,26 +66,6 @@ static unsigned char *vga_font;
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static unsigned char saved_map_mask;
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static int page = 0;
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/* Read a byte from a port. */
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static inline unsigned char
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inb (unsigned short port)
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{
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unsigned char value;
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asm volatile ("inb %w1, %0" : "=a" (value) : "Nd" (port));
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asm volatile ("outb %%al, $0x80" : : );
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return value;
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}
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/* Write a byte to a port. */
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static inline void
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outb (unsigned short port, unsigned char value)
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{
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asm volatile ("outb %b0, %w1" : : "a" (value), "Nd" (port));
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asm volatile ("outb %%al, $0x80" : : );
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}
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#define SEQUENCER_ADDR_PORT 0x3C4
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#define SEQUENCER_DATA_PORT 0x3C5
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#define MAP_MASK_REGISTER 0x02
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@ -106,7 +86,7 @@ static inline void
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wait_vretrace (void)
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{
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/* Wait until there is a vertical retrace. */
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while (! (inb (INPUT_STATUS1_REGISTER) & INPUT_STATUS1_VERTR_BIT));
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while (! (grub_inb (INPUT_STATUS1_REGISTER) & INPUT_STATUS1_VERTR_BIT));
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}
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/* Get Map Mask Register. */
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@ -116,12 +96,12 @@ get_map_mask (void)
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unsigned char old_addr;
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unsigned char old_data;
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old_addr = inb (SEQUENCER_ADDR_PORT);
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outb (SEQUENCER_ADDR_PORT, MAP_MASK_REGISTER);
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old_addr = grub_inb (SEQUENCER_ADDR_PORT);
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grub_outb (SEQUENCER_ADDR_PORT, MAP_MASK_REGISTER);
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old_data = inb (SEQUENCER_DATA_PORT);
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old_data = grub_inb (SEQUENCER_DATA_PORT);
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outb (SEQUENCER_ADDR_PORT, old_addr);
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grub_outb (SEQUENCER_ADDR_PORT, old_addr);
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return old_data;
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}
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@ -132,12 +112,12 @@ set_map_mask (unsigned char mask)
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{
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unsigned char old_addr;
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old_addr = inb (SEQUENCER_ADDR_PORT);
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outb (SEQUENCER_ADDR_PORT, MAP_MASK_REGISTER);
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old_addr = grub_inb (SEQUENCER_ADDR_PORT);
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grub_outb (SEQUENCER_ADDR_PORT, MAP_MASK_REGISTER);
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outb (SEQUENCER_DATA_PORT, mask);
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grub_outb (SEQUENCER_DATA_PORT, mask);
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outb (SEQUENCER_ADDR_PORT, old_addr);
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grub_outb (SEQUENCER_ADDR_PORT, old_addr);
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}
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/* Set Read Map Register. */
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@ -146,12 +126,12 @@ set_read_map (unsigned char map)
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{
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unsigned char old_addr;
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old_addr = inb (GRAPHICS_ADDR_PORT);
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old_addr = grub_inb (GRAPHICS_ADDR_PORT);
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outb (GRAPHICS_ADDR_PORT, READ_MAP_REGISTER);
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outb (GRAPHICS_DATA_PORT, map);
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grub_outb (GRAPHICS_ADDR_PORT, READ_MAP_REGISTER);
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grub_outb (GRAPHICS_DATA_PORT, map);
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outb (GRAPHICS_ADDR_PORT, old_addr);
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grub_outb (GRAPHICS_ADDR_PORT, old_addr);
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}
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/* Set start address. */
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@ -160,15 +140,15 @@ set_start_address (unsigned int start)
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{
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unsigned char old_addr;
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old_addr = inb (CRTC_ADDR_PORT);
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old_addr = grub_inb (CRTC_ADDR_PORT);
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outb (CRTC_ADDR_PORT, START_ADDR_LOW_REGISTER);
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outb (CRTC_DATA_PORT, start & 0xFF);
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grub_outb (CRTC_ADDR_PORT, START_ADDR_LOW_REGISTER);
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grub_outb (CRTC_DATA_PORT, start & 0xFF);
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outb (CRTC_ADDR_PORT, START_ADDR_HIGH_REGISTER);
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outb (CRTC_DATA_PORT, start >> 8);
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grub_outb (CRTC_ADDR_PORT, START_ADDR_HIGH_REGISTER);
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grub_outb (CRTC_DATA_PORT, start >> 8);
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outb (CRTC_ADDR_PORT, old_addr);
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grub_outb (CRTC_ADDR_PORT, old_addr);
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}
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static grub_err_t
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