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Diffstat (limited to 'ANDROID_3.4.5/arch/x86/kernel/early_printk.c')
-rw-r--r--ANDROID_3.4.5/arch/x86/kernel/early_printk.c259
1 files changed, 0 insertions, 259 deletions
diff --git a/ANDROID_3.4.5/arch/x86/kernel/early_printk.c b/ANDROID_3.4.5/arch/x86/kernel/early_printk.c
deleted file mode 100644
index 9b9f18b4..00000000
--- a/ANDROID_3.4.5/arch/x86/kernel/early_printk.c
+++ /dev/null
@@ -1,259 +0,0 @@
-#include <linux/console.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/string.h>
-#include <linux/screen_info.h>
-#include <linux/usb/ch9.h>
-#include <linux/pci_regs.h>
-#include <linux/pci_ids.h>
-#include <linux/errno.h>
-#include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/fcntl.h>
-#include <asm/setup.h>
-#include <xen/hvc-console.h>
-#include <asm/pci-direct.h>
-#include <asm/fixmap.h>
-#include <asm/mrst.h>
-#include <asm/pgtable.h>
-#include <linux/usb/ehci_def.h>
-
-/* Simple VGA output */
-#define VGABASE (__ISA_IO_base + 0xb8000)
-
-static int max_ypos = 25, max_xpos = 80;
-static int current_ypos = 25, current_xpos;
-
-static void early_vga_write(struct console *con, const char *str, unsigned n)
-{
- char c;
- int i, k, j;
-
- while ((c = *str++) != '\0' && n-- > 0) {
- if (current_ypos >= max_ypos) {
- /* scroll 1 line up */
- for (k = 1, j = 0; k < max_ypos; k++, j++) {
- for (i = 0; i < max_xpos; i++) {
- writew(readw(VGABASE+2*(max_xpos*k+i)),
- VGABASE + 2*(max_xpos*j + i));
- }
- }
- for (i = 0; i < max_xpos; i++)
- writew(0x720, VGABASE + 2*(max_xpos*j + i));
- current_ypos = max_ypos-1;
- }
-#ifdef CONFIG_KGDB_KDB
- if (c == '\b') {
- if (current_xpos > 0)
- current_xpos--;
- } else if (c == '\r') {
- current_xpos = 0;
- } else
-#endif
- if (c == '\n') {
- current_xpos = 0;
- current_ypos++;
- } else if (c != '\r') {
- writew(((0x7 << 8) | (unsigned short) c),
- VGABASE + 2*(max_xpos*current_ypos +
- current_xpos++));
- if (current_xpos >= max_xpos) {
- current_xpos = 0;
- current_ypos++;
- }
- }
- }
-}
-
-static struct console early_vga_console = {
- .name = "earlyvga",
- .write = early_vga_write,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-/* Serial functions loosely based on a similar package from Klaus P. Gerlicher */
-
-static int early_serial_base = 0x3f8; /* ttyS0 */
-
-#define XMTRDY 0x20
-
-#define DLAB 0x80
-
-#define TXR 0 /* Transmit register (WRITE) */
-#define RXR 0 /* Receive register (READ) */
-#define IER 1 /* Interrupt Enable */
-#define IIR 2 /* Interrupt ID */
-#define FCR 2 /* FIFO control */
-#define LCR 3 /* Line control */
-#define MCR 4 /* Modem control */
-#define LSR 5 /* Line Status */
-#define MSR 6 /* Modem Status */
-#define DLL 0 /* Divisor Latch Low */
-#define DLH 1 /* Divisor latch High */
-
-static int early_serial_putc(unsigned char ch)
-{
- unsigned timeout = 0xffff;
-
- while ((inb(early_serial_base + LSR) & XMTRDY) == 0 && --timeout)
- cpu_relax();
- outb(ch, early_serial_base + TXR);
- return timeout ? 0 : -1;
-}
-
-static void early_serial_write(struct console *con, const char *s, unsigned n)
-{
- while (*s && n-- > 0) {
- if (*s == '\n')
- early_serial_putc('\r');
- early_serial_putc(*s);
- s++;
- }
-}
-
-#define DEFAULT_BAUD 9600
-
-static __init void early_serial_init(char *s)
-{
- unsigned char c;
- unsigned divisor;
- unsigned baud = DEFAULT_BAUD;
- char *e;
-
- if (*s == ',')
- ++s;
-
- if (*s) {
- unsigned port;
- if (!strncmp(s, "0x", 2)) {
- early_serial_base = simple_strtoul(s, &e, 16);
- } else {
- static const int __initconst bases[] = { 0x3f8, 0x2f8 };
-
- if (!strncmp(s, "ttyS", 4))
- s += 4;
- port = simple_strtoul(s, &e, 10);
- if (port > 1 || s == e)
- port = 0;
- early_serial_base = bases[port];
- }
- s += strcspn(s, ",");
- if (*s == ',')
- s++;
- }
-
- outb(0x3, early_serial_base + LCR); /* 8n1 */
- outb(0, early_serial_base + IER); /* no interrupt */
- outb(0, early_serial_base + FCR); /* no fifo */
- outb(0x3, early_serial_base + MCR); /* DTR + RTS */
-
- if (*s) {
- baud = simple_strtoul(s, &e, 0);
- if (baud == 0 || s == e)
- baud = DEFAULT_BAUD;
- }
-
- divisor = 115200 / baud;
- c = inb(early_serial_base + LCR);
- outb(c | DLAB, early_serial_base + LCR);
- outb(divisor & 0xff, early_serial_base + DLL);
- outb((divisor >> 8) & 0xff, early_serial_base + DLH);
- outb(c & ~DLAB, early_serial_base + LCR);
-}
-
-static struct console early_serial_console = {
- .name = "earlyser",
- .write = early_serial_write,
- .flags = CON_PRINTBUFFER,
- .index = -1,
-};
-
-/* Direct interface for emergencies */
-static struct console *early_console = &early_vga_console;
-static int __initdata early_console_initialized;
-
-asmlinkage void early_printk(const char *fmt, ...)
-{
- char buf[512];
- int n;
- va_list ap;
-
- va_start(ap, fmt);
- n = vscnprintf(buf, sizeof(buf), fmt, ap);
- early_console->write(early_console, buf, n);
- va_end(ap);
-}
-
-static inline void early_console_register(struct console *con, int keep_early)
-{
- if (early_console->index != -1) {
- printk(KERN_CRIT "ERROR: earlyprintk= %s already used\n",
- con->name);
- return;
- }
- early_console = con;
- if (keep_early)
- early_console->flags &= ~CON_BOOT;
- else
- early_console->flags |= CON_BOOT;
- register_console(early_console);
-}
-
-static int __init setup_early_printk(char *buf)
-{
- int keep;
-
- if (!buf)
- return 0;
-
- if (early_console_initialized)
- return 0;
- early_console_initialized = 1;
-
- keep = (strstr(buf, "keep") != NULL);
-
- while (*buf != '\0') {
- if (!strncmp(buf, "serial", 6)) {
- buf += 6;
- early_serial_init(buf);
- early_console_register(&early_serial_console, keep);
- if (!strncmp(buf, ",ttyS", 5))
- buf += 5;
- }
- if (!strncmp(buf, "ttyS", 4)) {
- early_serial_init(buf + 4);
- early_console_register(&early_serial_console, keep);
- }
- if (!strncmp(buf, "vga", 3) &&
- boot_params.screen_info.orig_video_isVGA == 1) {
- max_xpos = boot_params.screen_info.orig_video_cols;
- max_ypos = boot_params.screen_info.orig_video_lines;
- current_ypos = boot_params.screen_info.orig_y;
- early_console_register(&early_vga_console, keep);
- }
-#ifdef CONFIG_EARLY_PRINTK_DBGP
- if (!strncmp(buf, "dbgp", 4) && !early_dbgp_init(buf + 4))
- early_console_register(&early_dbgp_console, keep);
-#endif
-#ifdef CONFIG_HVC_XEN
- if (!strncmp(buf, "xen", 3))
- early_console_register(&xenboot_console, keep);
-#endif
-#ifdef CONFIG_EARLY_PRINTK_INTEL_MID
- if (!strncmp(buf, "mrst", 4)) {
- mrst_early_console_init();
- early_console_register(&early_mrst_console, keep);
- }
-
- if (!strncmp(buf, "hsu", 3)) {
- hsu_early_console_init(buf + 3);
- early_console_register(&early_hsu_console, keep);
- }
-#endif
- buf++;
- }
- return 0;
-}
-
-early_param("earlyprintk", setup_early_printk);
generated by cgit (git 2.34.1) at 2025-01-25 22:23:37 +0000