| /* |
| * Copyright (c) 2009, Google Inc. |
| * All rights reserved. |
| * Copyright (c) 2009-2015, The Linux Foundation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google, Inc. nor the names of its contributors |
| * may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <stdlib.h> |
| #include <debug.h> |
| #include <printf.h> |
| #include <arch/arm/dcc.h> |
| #include <dev/fbcon.h> |
| #include <dev/uart.h> |
| #include <platform/timer.h> |
| #include <platform.h> |
| |
| #if PON_VIB_SUPPORT |
| #include <vibrator.h> |
| #endif |
| |
| |
| static void write_dcc(char c) |
| { |
| uint32_t timeout = 10; |
| |
| /* Note: Smallest sampling rate for DCC is 50us. |
| * This can be changed by SNOOPer.Rate on T32 window. |
| */ |
| while (timeout) |
| { |
| if (dcc_putc(c) == 0) |
| break; |
| udelay(50); |
| timeout--; |
| } |
| } |
| |
| #if WITH_DEBUG_LOG_BUF |
| |
| #ifndef LK_LOG_BUF_SIZE |
| #define LK_LOG_BUF_SIZE (4096) /* align on 4k */ |
| #endif |
| |
| #define LK_LOG_COOKIE 0x474f4c52 /* "RLOG" in ASCII */ |
| |
| struct lk_log { |
| struct lk_log_header { |
| unsigned cookie; |
| unsigned max_size; |
| unsigned size_written; |
| unsigned idx; |
| } header; |
| char data[LK_LOG_BUF_SIZE]; |
| }; |
| |
| static struct lk_log log = { |
| .header = { |
| .cookie = LK_LOG_COOKIE, |
| .max_size = sizeof(log.data), |
| .size_written = 0, |
| .idx = 0, |
| }, |
| .data = {0} |
| }; |
| |
| static void log_putc(char c) |
| { |
| log.data[log.header.idx++] = c; |
| log.header.size_written++; |
| if (unlikely(log.header.idx >= log.header.max_size)) |
| log.header.idx = 0; |
| } |
| #endif /* WITH_DEBUG_LOG_BUF */ |
| |
| void display_fbcon_message(char *str) |
| { |
| #if ENABLE_FBCON_LOGGING |
| while(*str != 0) { |
| fbcon_putc(*str++); |
| } |
| #endif |
| } |
| |
| void _dputc(char c) |
| { |
| #if WITH_DEBUG_LOG_BUF |
| log_putc(c); |
| #endif |
| #if WITH_DEBUG_DCC |
| if (c == '\n') { |
| write_dcc('\r'); |
| } |
| write_dcc(c) ; |
| #endif |
| #if WITH_DEBUG_UART |
| uart_putc(0, c); |
| #endif |
| #if WITH_DEBUG_FBCON && WITH_DEV_FBCON |
| fbcon_putc(c); |
| #endif |
| #if WITH_DEBUG_JTAG |
| jtag_dputc(c); |
| #endif |
| } |
| |
| int dgetc(char *c, bool wait) |
| { |
| int n; |
| #if WITH_DEBUG_DCC |
| n = dcc_getc(); |
| #elif WITH_DEBUG_UART |
| n = uart_getc(0, 0); |
| #else |
| n = -1; |
| #endif |
| if (n < 0) { |
| return -1; |
| } else { |
| *c = n; |
| return 0; |
| } |
| } |
| |
| void platform_halt(void) |
| { |
| #if PON_VIB_SUPPORT |
| vib_turn_off(); |
| #endif |
| if (set_download_mode(NORMAL_DLOAD) == 0) |
| { |
| dprintf(CRITICAL, "HALT: reboot into dload mode...\n"); |
| reboot_device(DLOAD); |
| dprintf(CRITICAL, "HALT: reboot_device failed\n"); |
| } |
| else |
| { |
| dprintf(CRITICAL, "HALT: set_download_mode not supported\n"); |
| } |
| dprintf(CRITICAL, "HALT: spinning forever...\n"); |
| for (;;) ; |
| } |