mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-10-31 08:08:51 +01:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
249
arch/x86/kernel/early_printk.c
Normal file
249
arch/x86/kernel/early_printk.c
Normal file
|
|
@ -0,0 +1,249 @@
|
|||
#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/intel-mid.h>
|
||||
#include <asm/pgtable.h>
|
||||
#include <linux/usb/ehci_def.h>
|
||||
#include <linux/efi.h>
|
||||
#include <asm/efi.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,
|
||||
};
|
||||
|
||||
static inline void early_console_register(struct console *con, int keep_early)
|
||||
{
|
||||
if (con->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)
|
||||
return 0;
|
||||
|
||||
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
|
||||
#ifdef CONFIG_EARLY_PRINTK_EFI
|
||||
if (!strncmp(buf, "efi", 3))
|
||||
early_console_register(&early_efi_console, keep);
|
||||
#endif
|
||||
|
||||
buf++;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
early_param("earlyprintk", setup_early_printk);
|
||||
Loading…
Add table
Add a link
Reference in a new issue