u-boot/lib/efi_selftest/efi_selftest_console.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

244 lines
4.2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* EFI efi_selftest
*
* Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
*/
#include <efi_selftest.h>
#include <vsprintf.h>
struct efi_simple_text_output_protocol *con_out;
struct efi_simple_input_interface *con_in;
/*
* Print a MAC address to an u16 string
*
* @pointer: mac address
* @buf: pointer to buffer address
* on return position of terminating zero word
*/
static void mac(void *pointer, u16 **buf)
{
int i, j;
u16 c;
u8 *p = (u8 *)pointer;
u8 byte;
u16 *pos = *buf;
for (i = 0; i < ARP_HLEN; ++i) {
if (i)
*pos++ = ':';
byte = p[i];
for (j = 4; j >= 0; j -= 4) {
c = (byte >> j) & 0x0f;
c += '0';
if (c > '9')
c += 'a' - '9' - 1;
*pos++ = c;
}
}
*pos = 0;
*buf = pos;
}
/*
* Print a pointer to an u16 string
*
* @pointer: pointer
* @buf: pointer to buffer address
* on return position of terminating zero word
*/
static void pointer(void *pointer, u16 **buf)
{
int i;
u16 c;
uintptr_t p = (uintptr_t)pointer;
u16 *pos = *buf;
for (i = 8 * sizeof(p) - 4; i >= 0; i -= 4) {
c = (p >> i) & 0x0f;
c += '0';
if (c > '9')
c += 'a' - '9' - 1;
*pos++ = c;
}
*pos = 0;
*buf = pos;
}
/*
* Print an unsigned 32bit value as decimal number to an u16 string
*
* @value: value to be printed
* @buf: pointer to buffer address
* on return position of terminating zero word
*/
static void uint2dec(u32 value, u16 **buf)
{
u16 *pos = *buf;
int i;
u16 c;
u64 f;
/*
* Increment by .5 and multiply with
* (2 << 60) / 1,000,000,000 = 0x44B82FA0.9B5A52CC
* to move the first digit to bit 60-63.
*/
f = 0x225C17D0;
f += (0x9B5A52DULL * value) >> 28;
f += 0x44B82FA0ULL * value;
for (i = 0; i < 10; ++i) {
/* Write current digit */
c = f >> 60;
if (c || pos != *buf)
*pos++ = c + '0';
/* Eliminate current digit */
f &= 0xfffffffffffffff;
/* Get next digit */
f *= 0xaULL;
}
if (pos == *buf)
*pos++ = '0';
*pos = 0;
*buf = pos;
}
/*
* Print a signed 32bit value as decimal number to an u16 string
*
* @value: value to be printed
* @buf: pointer to buffer address
* on return position of terminating zero word
*/
static void int2dec(s32 value, u16 **buf)
{
u32 u;
u16 *pos = *buf;
if (value < 0) {
*pos++ = '-';
u = -value;
} else {
u = value;
}
uint2dec(u, &pos);
*buf = pos;
}
/*
* Print a colored formatted string to the EFI console
*
* @color color, see constants in efi_api.h, use -1 for no color
* @fmt format string
* @... optional arguments
*/
void efi_st_printc(int color, const char *fmt, ...)
{
va_list args;
u16 buf[160];
const char *c;
u16 *pos = buf;
const char *s;
u16 *u;
va_start(args, fmt);
if (color >= 0)
con_out->set_attribute(con_out, (unsigned long)color);
c = fmt;
for (; *c; ++c) {
switch (*c) {
case '\\':
++c;
switch (*c) {
case '\0':
--c;
break;
case 'n':
*pos++ = '\n';
break;
case 'r':
*pos++ = '\r';
break;
case 't':
*pos++ = '\t';
break;
default:
*pos++ = *c;
}
break;
case '%':
++c;
switch (*c) {
case '\0':
--c;
break;
case 'd':
int2dec(va_arg(args, s32), &pos);
break;
case 'p':
++c;
switch (*c) {
/* MAC address */
case 'm':
mac(va_arg(args, void*), &pos);
break;
/* u16 string */
case 's':
u = va_arg(args, u16*);
if (pos > buf) {
*pos = 0;
con_out->output_string(con_out,
buf);
}
con_out->output_string(con_out, u);
pos = buf;
break;
default:
--c;
pointer(va_arg(args, void*), &pos);
}
break;
case 's':
s = va_arg(args, const char *);
for (; *s; ++s)
*pos++ = *s;
break;
case 'u':
uint2dec(va_arg(args, u32), &pos);
break;
default:
break;
}
break;
default:
*pos++ = *c;
}
}
va_end(args);
*pos = 0;
con_out->output_string(con_out, buf);
if (color >= 0)
con_out->set_attribute(con_out, EFI_LIGHTGRAY);
}
/*
* Reads an Unicode character from the input device.
*
* @return: Unicode character
*/
u16 efi_st_get_key(void)
{
struct efi_input_key input_key;
efi_status_t ret;
/* Wait for next key */
do {
ret = con_in->read_key_stroke(con_in, &input_key);
} while (ret == EFI_NOT_READY);
return input_key.unicode_char;
}